clang 8.0.0

CodeGenFunction.h
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1 //===-- CodeGenFunction.h - Per-Function state for LLVM CodeGen -*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This is the internal per-function state used for llvm translation.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #ifndef LLVM_CLANG_LIB_CODEGEN_CODEGENFUNCTION_H
15 #define LLVM_CLANG_LIB_CODEGEN_CODEGENFUNCTION_H
16
17 #include "CGBuilder.h"
18 #include "CGDebugInfo.h"
19 #include "CGLoopInfo.h"
20 #include "CGValue.h"
21 #include "CodeGenModule.h"
22 #include "CodeGenPGO.h"
23 #include "EHScopeStack.h"
24 #include "VarBypassDetector.h"
25 #include "clang/AST/CharUnits.h"
26 #include "clang/AST/ExprCXX.h"
27 #include "clang/AST/ExprObjC.h"
28 #include "clang/AST/ExprOpenMP.h"
29 #include "clang/AST/Type.h"
30 #include "clang/Basic/ABI.h"
31 #include "clang/Basic/CapturedStmt.h"
32 #include "clang/Basic/CodeGenOptions.h"
33 #include "clang/Basic/OpenMPKinds.h"
34 #include "clang/Basic/TargetInfo.h"
35 #include "llvm/ADT/ArrayRef.h"
36 #include "llvm/ADT/DenseMap.h"
37 #include "llvm/ADT/MapVector.h"
38 #include "llvm/ADT/SmallVector.h"
39 #include "llvm/IR/ValueHandle.h"
40 #include "llvm/Support/Debug.h"
41 #include "llvm/Transforms/Utils/SanitizerStats.h"
42
43 namespace llvm {
44 class BasicBlock;
45 class LLVMContext;
46 class MDNode;
47 class Module;
48 class SwitchInst;
49 class Twine;
50 class Value;
51 class CallSite;
52 }
53
54 namespace clang {
55 class ASTContext;
56 class BlockDecl;
57 class CXXDestructorDecl;
58 class CXXForRangeStmt;
59 class CXXTryStmt;
60 class Decl;
61 class LabelDecl;
62 class EnumConstantDecl;
63 class FunctionDecl;
64 class FunctionProtoType;
65 class LabelStmt;
66 class ObjCContainerDecl;
67 class ObjCInterfaceDecl;
68 class ObjCIvarDecl;
69 class ObjCMethodDecl;
70 class ObjCImplementationDecl;
71 class ObjCPropertyImplDecl;
72 class TargetInfo;
73 class VarDecl;
74 class ObjCForCollectionStmt;
75 class ObjCAtTryStmt;
76 class ObjCAtThrowStmt;
77 class ObjCAtSynchronizedStmt;
78 class ObjCAutoreleasePoolStmt;
79
80 namespace analyze_os_log {
81 class OSLogBufferLayout;
82 }
83
84 namespace CodeGen {
85 class CodeGenTypes;
86 class CGCallee;
87 class CGFunctionInfo;
88 class CGRecordLayout;
89 class CGBlockInfo;
90 class CGCXXABI;
91 class BlockByrefHelpers;
92 class BlockByrefInfo;
93 class BlockFlags;
94 class BlockFieldFlags;
95 class RegionCodeGenTy;
96 class TargetCodeGenInfo;
97 struct OMPTaskDataTy;
98 struct CGCoroData;
99
100 /// The kind of evaluation to perform on values of a particular
101 /// type. Basically, is the code in CGExprScalar, CGExprComplex, or
102 /// CGExprAgg?
103 ///
104 /// TODO: should vectors maybe be split out into their own thing?
105 enum TypeEvaluationKind {
106 TEK_Scalar,
107 TEK_Complex,
108 TEK_Aggregate
109 };
110
111 #define LIST_SANITIZER_CHECKS \
112 SANITIZER_CHECK(AddOverflow, add_overflow, 0) \
113 SANITIZER_CHECK(BuiltinUnreachable, builtin_unreachable, 0) \
114 SANITIZER_CHECK(CFICheckFail, cfi_check_fail, 0) \
115 SANITIZER_CHECK(DivremOverflow, divrem_overflow, 0) \
116 SANITIZER_CHECK(DynamicTypeCacheMiss, dynamic_type_cache_miss, 0) \
117 SANITIZER_CHECK(FloatCastOverflow, float_cast_overflow, 0) \
118 SANITIZER_CHECK(FunctionTypeMismatch, function_type_mismatch, 0) \
119 SANITIZER_CHECK(ImplicitConversion, implicit_conversion, 0) \
120 SANITIZER_CHECK(InvalidBuiltin, invalid_builtin, 0) \
121 SANITIZER_CHECK(LoadInvalidValue, load_invalid_value, 0) \
122 SANITIZER_CHECK(MissingReturn, missing_return, 0) \
123 SANITIZER_CHECK(MulOverflow, mul_overflow, 0) \
124 SANITIZER_CHECK(NegateOverflow, negate_overflow, 0) \
125 SANITIZER_CHECK(NullabilityArg, nullability_arg, 0) \
126 SANITIZER_CHECK(NullabilityReturn, nullability_return, 1) \
127 SANITIZER_CHECK(NonnullArg, nonnull_arg, 0) \
128 SANITIZER_CHECK(NonnullReturn, nonnull_return, 1) \
129 SANITIZER_CHECK(OutOfBounds, out_of_bounds, 0) \
130 SANITIZER_CHECK(PointerOverflow, pointer_overflow, 0) \
131 SANITIZER_CHECK(ShiftOutOfBounds, shift_out_of_bounds, 0) \
132 SANITIZER_CHECK(SubOverflow, sub_overflow, 0) \
133 SANITIZER_CHECK(TypeMismatch, type_mismatch, 1) \
134 SANITIZER_CHECK(AlignmentAssumption, alignment_assumption, 0) \
135 SANITIZER_CHECK(VLABoundNotPositive, vla_bound_not_positive, 0)
136
137 enum SanitizerHandler {
138 #define SANITIZER_CHECK(Enum, Name, Version) Enum,
139 LIST_SANITIZER_CHECKS
140 #undef SANITIZER_CHECK
141 };
142
143 /// Helper class with most of the code for saving a value for a
144 /// conditional expression cleanup.
145 struct DominatingLLVMValue {
146 typedef llvm::PointerIntPair<llvm::Value*, 1, bool> saved_type;
147
148 /// Answer whether the given value needs extra work to be saved.
149 static bool needsSaving(llvm::Value *value) {
150 // If it's not an instruction, we don't need to save.
151 if (!isa<llvm::Instruction>(value)) return false;
152
153 // If it's an instruction in the entry block, we don't need to save.
154 llvm::BasicBlock *block = cast<llvm::Instruction>(value)->getParent();
155 return (block != &block->getParent()->getEntryBlock());
156 }
157
158 static saved_type save(CodeGenFunction &CGF, llvm::Value *value);
159 static llvm::Value *restore(CodeGenFunction &CGF, saved_type value);
160 };
161
162 /// A partial specialization of DominatingValue for llvm::Values that
163 /// might be llvm::Instructions.
164 template <class T> struct DominatingPointer<T,true> : DominatingLLVMValue {
165 typedef T *type;
166 static type restore(CodeGenFunction &CGF, saved_type value) {
167 return static_cast<T*>(DominatingLLVMValue::restore(CGF, value));
168 }
169 };
170
171 /// A specialization of DominatingValue for Address.
172 template <> struct DominatingValue<Address> {
173 typedef Address type;
174
175 struct saved_type {
176 DominatingLLVMValue::saved_type SavedValue;
177 CharUnits Alignment;
178 };
179
180 static bool needsSaving(type value) {
181 return DominatingLLVMValue::needsSaving(value.getPointer());
182 }
183 static saved_type save(CodeGenFunction &CGF, type value) {
184 return { DominatingLLVMValue::save(CGF, value.getPointer()),
185 value.getAlignment() };
186 }
187 static type restore(CodeGenFunction &CGF, saved_type value) {
188 return Address(DominatingLLVMValue::restore(CGF, value.SavedValue),
189 value.Alignment);
190 }
191 };
192
193 /// A specialization of DominatingValue for RValue.
194 template <> struct DominatingValue<RValue> {
195 typedef RValue type;
196 class saved_type {
197 enum Kind { ScalarLiteral, ScalarAddress, AggregateLiteral,
198 AggregateAddress, ComplexAddress };
199
200 llvm::Value *Value;
201 unsigned K : 3;
202 unsigned Align : 29;
203 saved_type(llvm::Value *v, Kind k, unsigned a = 0)
204 : Value(v), K(k), Align(a) {}
205
206 public:
207 static bool needsSaving(RValue value);
208 static saved_type save(CodeGenFunction &CGF, RValue value);
209 RValue restore(CodeGenFunction &CGF);
210
211 // implementations in CGCleanup.cpp
212 };
213
214 static bool needsSaving(type value) {
215 return saved_type::needsSaving(value);
216 }
217 static saved_type save(CodeGenFunction &CGF, type value) {
218 return saved_type::save(CGF, value);
219 }
220 static type restore(CodeGenFunction &CGF, saved_type value) {
221 return value.restore(CGF);
222 }
223 };
224
225 /// CodeGenFunction - This class organizes the per-function state that is used
226 /// while generating LLVM code.
227 class CodeGenFunction : public CodeGenTypeCache {
228 CodeGenFunction(const CodeGenFunction &) = delete;
229 void operator=(const CodeGenFunction &) = delete;
230
231 friend class CGCXXABI;
232 public:
233 /// A jump destination is an abstract label, branching to which may
234 /// require a jump out through normal cleanups.
235 struct JumpDest {
236 JumpDest() : Block(nullptr), ScopeDepth(), Index(0) {}
237 JumpDest(llvm::BasicBlock *Block,
238 EHScopeStack::stable_iterator Depth,
239 unsigned Index)
240 : Block(Block), ScopeDepth(Depth), Index(Index) {}
241
242 bool isValid() const { return Block != nullptr; }
243 llvm::BasicBlock *getBlock() const { return Block; }
244 EHScopeStack::stable_iterator getScopeDepth() const { return ScopeDepth; }
245 unsigned getDestIndex() const { return Index; }
246
247 // This should be used cautiously.
248 void setScopeDepth(EHScopeStack::stable_iterator depth) {
249 ScopeDepth = depth;
250 }
251
252 private:
253 llvm::BasicBlock *Block;
254 EHScopeStack::stable_iterator ScopeDepth;
255 unsigned Index;
256 };
257
258 CodeGenModule &CGM; // Per-module state.
259 const TargetInfo &Target;
260
261 typedef std::pair<llvm::Value *, llvm::Value *> ComplexPairTy;
262 LoopInfoStack LoopStack;
263 CGBuilderTy Builder;
264
265 // Stores variables for which we can't generate correct lifetime markers
266 // because of jumps.
267 VarBypassDetector Bypasses;
268
269 // CodeGen lambda for loops and support for ordered clause
270 typedef llvm::function_ref<void(CodeGenFunction &, const OMPLoopDirective &,
271 JumpDest)>
272 CodeGenLoopTy;
273 typedef llvm::function_ref<void(CodeGenFunction &, SourceLocation,
274 const unsigned, const bool)>
275 CodeGenOrderedTy;
276
277 // Codegen lambda for loop bounds in worksharing loop constructs
278 typedef llvm::function_ref<std::pair<LValue, LValue>(
279 CodeGenFunction &, const OMPExecutableDirective &S)>
280 CodeGenLoopBoundsTy;
281
282 // Codegen lambda for loop bounds in dispatch-based loop implementation
283 typedef llvm::function_ref<std::pair<llvm::Value *, llvm::Value *>(
284 CodeGenFunction &, const OMPExecutableDirective &S, Address LB,
285 Address UB)>
286 CodeGenDispatchBoundsTy;
287
288 /// CGBuilder insert helper. This function is called after an
289 /// instruction is created using Builder.
290 void InsertHelper(llvm::Instruction *I, const llvm::Twine &Name,
291 llvm::BasicBlock *BB,
292 llvm::BasicBlock::iterator InsertPt) const;
293
294 /// CurFuncDecl - Holds the Decl for the current outermost
295 /// non-closure context.
296 const Decl *CurFuncDecl;
297 /// CurCodeDecl - This is the inner-most code context, which includes blocks.
298 const Decl *CurCodeDecl;
299 const CGFunctionInfo *CurFnInfo;
300 QualType FnRetTy;
301 llvm::Function *CurFn = nullptr;
302
303 // Holds coroutine data if the current function is a coroutine. We use a
304 // wrapper to manage its lifetime, so that we don't have to define CGCoroData
305 // in this header.
306 struct CGCoroInfo {
307 std::unique_ptr<CGCoroData> Data;
308 CGCoroInfo();
309 ~CGCoroInfo();
310 };
311 CGCoroInfo CurCoro;
312
313 bool isCoroutine() const {
314 return CurCoro.Data != nullptr;
315 }
316
317 /// CurGD - The GlobalDecl for the current function being compiled.
318 GlobalDecl CurGD;
319
320 /// PrologueCleanupDepth - The cleanup depth enclosing all the
321 /// cleanups associated with the parameters.
322 EHScopeStack::stable_iterator PrologueCleanupDepth;
323
324 /// ReturnBlock - Unified return block.
325 JumpDest ReturnBlock;
326
327 /// ReturnValue - The temporary alloca to hold the return
328 /// value. This is invalid iff the function has no return value.
329 Address ReturnValue = Address::invalid();
330
331 /// Return true if a label was seen in the current scope.
332 bool hasLabelBeenSeenInCurrentScope() const {
333 if (CurLexicalScope)
334 return CurLexicalScope->hasLabels();
335 return !LabelMap.empty();
336 }
337
338 /// AllocaInsertPoint - This is an instruction in the entry block before which
339 /// we prefer to insert allocas.
340 llvm::AssertingVH<llvm::Instruction> AllocaInsertPt;
341
342 /// API for captured statement code generation.
343 class CGCapturedStmtInfo {
344 public:
345 explicit CGCapturedStmtInfo(CapturedRegionKind K = CR_Default)
346 : Kind(K), ThisValue(nullptr), CXXThisFieldDecl(nullptr) {}
347 explicit CGCapturedStmtInfo(const CapturedStmt &S,
348 CapturedRegionKind K = CR_Default)
349 : Kind(K), ThisValue(nullptr), CXXThisFieldDecl(nullptr) {
350
351 RecordDecl::field_iterator Field =
352 S.getCapturedRecordDecl()->field_begin();
353 for (CapturedStmt::const_capture_iterator I = S.capture_begin(),
354 E = S.capture_end();
355 I != E; ++I, ++Field) {
356 if (I->capturesThis())
357 CXXThisFieldDecl = *Field;
358 else if (I->capturesVariable())
359 CaptureFields[I->getCapturedVar()->getCanonicalDecl()] = *Field;
360 else if (I->capturesVariableByCopy())
361 CaptureFields[I->getCapturedVar()->getCanonicalDecl()] = *Field;
362 }
363 }
364
365 virtual ~CGCapturedStmtInfo();
366
367 CapturedRegionKind getKind() const { return Kind; }
368
369 virtual void setContextValue(llvm::Value *V) { ThisValue = V; }
370 // Retrieve the value of the context parameter.
371 virtual llvm::Value *getContextValue() const { return ThisValue; }
372
373 /// Lookup the captured field decl for a variable.
374 virtual const FieldDecl *lookup(const VarDecl *VD) const {
375 return CaptureFields.lookup(VD->getCanonicalDecl());
376 }
377
378 bool isCXXThisExprCaptured() const { return getThisFieldDecl() != nullptr; }
379 virtual FieldDecl *getThisFieldDecl() const { return CXXThisFieldDecl; }
380
381 static bool classof(const CGCapturedStmtInfo *) {
382 return true;
383 }
384
385 /// Emit the captured statement body.
386 virtual void EmitBody(CodeGenFunction &CGF, const Stmt *S) {
387 CGF.incrementProfileCounter(S);
388 CGF.EmitStmt(S);
389 }
390
391 /// Get the name of the capture helper.
392 virtual StringRef getHelperName() const { return "__captured_stmt"; }
393
394 private:
395 /// The kind of captured statement being generated.
396 CapturedRegionKind Kind;
397
398 /// Keep the map between VarDecl and FieldDecl.
399 llvm::SmallDenseMap<const VarDecl *, FieldDecl *> CaptureFields;
400
401 /// The base address of the captured record, passed in as the first
402 /// argument of the parallel region function.
403 llvm::Value *ThisValue;
404
405 /// Captured 'this' type.
406 FieldDecl *CXXThisFieldDecl;
407 };
408 CGCapturedStmtInfo *CapturedStmtInfo = nullptr;
409
410 /// RAII for correct setting/restoring of CapturedStmtInfo.
411 class CGCapturedStmtRAII {
412 private:
413 CodeGenFunction &CGF;
414 CGCapturedStmtInfo *PrevCapturedStmtInfo;
415 public:
416 CGCapturedStmtRAII(CodeGenFunction &CGF,
417 CGCapturedStmtInfo *NewCapturedStmtInfo)
418 : CGF(CGF), PrevCapturedStmtInfo(CGF.CapturedStmtInfo) {
419 CGF.CapturedStmtInfo = NewCapturedStmtInfo;
420 }
421 ~CGCapturedStmtRAII() { CGF.CapturedStmtInfo = PrevCapturedStmtInfo; }
422 };
423
424 /// An abstract representation of regular/ObjC call/message targets.
425 class AbstractCallee {
426 /// The function declaration of the callee.
427 const Decl *CalleeDecl;
428
429 public:
430 AbstractCallee() : CalleeDecl(nullptr) {}
431 AbstractCallee(const FunctionDecl *FD) : CalleeDecl(FD) {}
432 AbstractCallee(const ObjCMethodDecl *OMD) : CalleeDecl(OMD) {}
433 bool hasFunctionDecl() const {
434 return dyn_cast_or_null<FunctionDecl>(CalleeDecl);
435 }
436 const Decl *getDecl() const { return CalleeDecl; }
437 unsigned getNumParams() const {
438 if (const auto *FD = dyn_cast<FunctionDecl>(CalleeDecl))
439 return FD->getNumParams();
440 return cast<ObjCMethodDecl>(CalleeDecl)->param_size();
441 }
442 const ParmVarDecl *getParamDecl(unsigned I) const {
443 if (const auto *FD = dyn_cast<FunctionDecl>(CalleeDecl))
444 return FD->getParamDecl(I);
445 return *(cast<ObjCMethodDecl>(CalleeDecl)->param_begin() + I);
446 }
447 };
448
449 /// Sanitizers enabled for this function.
450 SanitizerSet SanOpts;
451
452 /// True if CodeGen currently emits code implementing sanitizer checks.
453 bool IsSanitizerScope = false;
454
455 /// RAII object to set/unset CodeGenFunction::IsSanitizerScope.
456 class SanitizerScope {
457 CodeGenFunction *CGF;
458 public:
459 SanitizerScope(CodeGenFunction *CGF);
460 ~SanitizerScope();
461 };
462
463 /// In C++, whether we are code generating a thunk. This controls whether we
464 /// should emit cleanups.
465 bool CurFuncIsThunk = false;
466
467 /// In ARC, whether we should autorelease the return value.
468 bool AutoreleaseResult = false;
469
470 /// Whether we processed a Microsoft-style asm block during CodeGen. These can
471 /// potentially set the return value.
472 bool SawAsmBlock = false;
473
474 const NamedDecl *CurSEHParent = nullptr;
475
476 /// True if the current function is an outlined SEH helper. This can be a
477 /// finally block or filter expression.
478 bool IsOutlinedSEHHelper = false;
479
480 const CodeGen::CGBlockInfo *BlockInfo = nullptr;
481 llvm::Value *BlockPointer = nullptr;
482
483 llvm::DenseMap<const VarDecl *, FieldDecl *> LambdaCaptureFields;
484 FieldDecl *LambdaThisCaptureField = nullptr;
485
486 /// A mapping from NRVO variables to the flags used to indicate
487 /// when the NRVO has been applied to this variable.
488 llvm::DenseMap<const VarDecl *, llvm::Value *> NRVOFlags;
489
490 EHScopeStack EHStack;
491 llvm::SmallVector<char, 256> LifetimeExtendedCleanupStack;
492 llvm::SmallVector<const JumpDest *, 2> SEHTryEpilogueStack;
493
494 llvm::Instruction *CurrentFuncletPad = nullptr;
495
496 class CallLifetimeEnd final : public EHScopeStack::Cleanup {
497 llvm::Value *Addr;
498 llvm::Value *Size;
499
500 public:
501 CallLifetimeEnd(Address addr, llvm::Value *size)
502 : Addr(addr.getPointer()), Size(size) {}
503
504 void Emit(CodeGenFunction &CGF, Flags flags) override {
505 CGF.EmitLifetimeEnd(Size, Addr);
506 }
507 };
508
509 /// Header for data within LifetimeExtendedCleanupStack.
510 struct LifetimeExtendedCleanupHeader {
511 /// The size of the following cleanup object.
512 unsigned Size;
513 /// The kind of cleanup to push: a value from the CleanupKind enumeration.
514 unsigned Kind : 31;
515 /// Whether this is a conditional cleanup.
516 unsigned IsConditional : 1;
517
518 size_t getSize() const { return Size; }
519 CleanupKind getKind() const { return (CleanupKind)Kind; }
520 bool isConditional() const { return IsConditional; }
521 };
522
523 /// i32s containing the indexes of the cleanup destinations.
524 Address NormalCleanupDest = Address::invalid();
525
526 unsigned NextCleanupDestIndex = 1;
527
528 /// FirstBlockInfo - The head of a singly-linked-list of block layouts.
529 CGBlockInfo *FirstBlockInfo = nullptr;
530
531 /// EHResumeBlock - Unified block containing a call to llvm.eh.resume.
532 llvm::BasicBlock *EHResumeBlock = nullptr;
533
534 /// The exception slot. All landing pads write the current exception pointer
535 /// into this alloca.
536 llvm::Value *ExceptionSlot = nullptr;
537
538 /// The selector slot. Under the MandatoryCleanup model, all landing pads
539 /// write the current selector value into this alloca.
540 llvm::AllocaInst *EHSelectorSlot = nullptr;
541
542 /// A stack of exception code slots. Entering an __except block pushes a slot
543 /// on the stack and leaving pops one. The __exception_code() intrinsic loads
544 /// a value from the top of the stack.
545 SmallVector<Address, 1> SEHCodeSlotStack;
546
547 /// Value returned by __exception_info intrinsic.
548 llvm::Value *SEHInfo = nullptr;
549
550 /// Emits a landing pad for the current EH stack.
551 llvm::BasicBlock *EmitLandingPad();
552
553 llvm::BasicBlock *getInvokeDestImpl();
554
555 template <class T>
556 typename DominatingValue<T>::saved_type saveValueInCond(T value) {
557 return DominatingValue<T>::save(*this, value);
558 }
559
560 public:
561 /// ObjCEHValueStack - Stack of Objective-C exception values, used for
562 /// rethrows.
563 SmallVector<llvm::Value*, 8> ObjCEHValueStack;
564
565 /// A class controlling the emission of a finally block.
566 class FinallyInfo {
567 /// Where the catchall's edge through the cleanup should go.
568 JumpDest RethrowDest;
569
570 /// A function to call to enter the catch.
571 llvm::Constant *BeginCatchFn;
572
573 /// An i1 variable indicating whether or not the @finally is
574 /// running for an exception.
575 llvm::AllocaInst *ForEHVar;
576
577 /// An i8* variable into which the exception pointer to rethrow
578 /// has been saved.
579 llvm::AllocaInst *SavedExnVar;
580
581 public:
582 void enter(CodeGenFunction &CGF, const Stmt *Finally,
583 llvm::Constant *beginCatchFn, llvm::Constant *endCatchFn,
584 llvm::Constant *rethrowFn);
585 void exit(CodeGenFunction &CGF);
586 };
587
588 /// Returns true inside SEH __try blocks.
589 bool isSEHTryScope() const { return !SEHTryEpilogueStack.empty(); }
590
591 /// Returns true while emitting a cleanuppad.
592 bool isCleanupPadScope() const {
593 return CurrentFuncletPad && isa<llvm::CleanupPadInst>(CurrentFuncletPad);
594 }
595
596 /// pushFullExprCleanup - Push a cleanup to be run at the end of the
597 /// current full-expression. Safe against the possibility that
598 /// we're currently inside a conditionally-evaluated expression.
599 template <class T, class... As>
600 void pushFullExprCleanup(CleanupKind kind, As... A) {
601 // If we're not in a conditional branch, or if none of the
602 // arguments requires saving, then use the unconditional cleanup.
603 if (!isInConditionalBranch())
604 return EHStack.pushCleanup<T>(kind, A...);
605
606 // Stash values in a tuple so we can guarantee the order of saves.
607 typedef std::tuple<typename DominatingValue<As>::saved_type...> SavedTuple;
608 SavedTuple Saved{saveValueInCond(A)...};
609
610 typedef EHScopeStack::ConditionalCleanup<T, As...> CleanupType;
611 EHStack.pushCleanupTuple<CleanupType>(kind, Saved);
612 initFullExprCleanup();
613 }
614
615 /// Queue a cleanup to be pushed after finishing the current
616 /// full-expression.
617 template <class T, class... As>
618 void pushCleanupAfterFullExpr(CleanupKind Kind, As... A) {
619 if (!isInConditionalBranch())
620 return pushCleanupAfterFullExprImpl<T>(Kind, Address::invalid(), A...);
621
622 Address ActiveFlag = createCleanupActiveFlag();
623 assert(!DominatingValue<Address>::needsSaving(ActiveFlag) &&
624 "cleanup active flag should never need saving");
625
626 typedef std::tuple<typename DominatingValue<As>::saved_type...> SavedTuple;
627 SavedTuple Saved{saveValueInCond(A)...};
628
629 typedef EHScopeStack::ConditionalCleanup<T, As...> CleanupType;
630 pushCleanupAfterFullExprImpl<CleanupType>(Kind, ActiveFlag, Saved);
631 }
632
633 template <class T, class... As>
634 void pushCleanupAfterFullExprImpl(CleanupKind Kind, Address ActiveFlag,
635 As... A) {
636 LifetimeExtendedCleanupHeader Header = {sizeof(T), Kind,
637 ActiveFlag.isValid()};
638
639 size_t OldSize = LifetimeExtendedCleanupStack.size();
640 LifetimeExtendedCleanupStack.resize(
641 LifetimeExtendedCleanupStack.size() + sizeof(Header) + Header.Size +
642 (Header.IsConditional ? sizeof(ActiveFlag) : 0));
643
644 static_assert(sizeof(Header) % alignof(T) == 0,
645 "Cleanup will be allocated on misaligned address");
646 char *Buffer = &LifetimeExtendedCleanupStack[OldSize];
647 new (Buffer) LifetimeExtendedCleanupHeader(Header);
648 new (Buffer + sizeof(Header)) T(A...);
649 if (Header.IsConditional)
650 new (Buffer + sizeof(Header) + sizeof(T)) Address(ActiveFlag);
651 }
652
653 /// Set up the last cleanup that was pushed as a conditional
654 /// full-expression cleanup.
655 void initFullExprCleanup() {
656 initFullExprCleanupWithFlag(createCleanupActiveFlag());
657 }
658
659 void initFullExprCleanupWithFlag(Address ActiveFlag);
660 Address createCleanupActiveFlag();
661
662 /// PushDestructorCleanup - Push a cleanup to call the
663 /// complete-object destructor of an object of the given type at the
664 /// given address. Does nothing if T is not a C++ class type with a
665 /// non-trivial destructor.
666 void PushDestructorCleanup(QualType T, Address Addr);
667
668 /// PushDestructorCleanup - Push a cleanup to call the
669 /// complete-object variant of the given destructor on the object at
670 /// the given address.
671 void PushDestructorCleanup(const CXXDestructorDecl *Dtor, Address Addr);
672
673 /// PopCleanupBlock - Will pop the cleanup entry on the stack and
674 /// process all branch fixups.
675 void PopCleanupBlock(bool FallThroughIsBranchThrough = false);
676
677 /// DeactivateCleanupBlock - Deactivates the given cleanup block.
678 /// The block cannot be reactivated. Pops it if it's the top of the
679 /// stack.
680 ///
681 /// \param DominatingIP - An instruction which is known to
682 /// dominate the current IP (if set) and which lies along
683 /// all paths of execution between the current IP and the
684 /// the point at which the cleanup comes into scope.
685 void DeactivateCleanupBlock(EHScopeStack::stable_iterator Cleanup,
686 llvm::Instruction *DominatingIP);
687
688 /// ActivateCleanupBlock - Activates an initially-inactive cleanup.
689 /// Cannot be used to resurrect a deactivated cleanup.
690 ///
691 /// \param DominatingIP - An instruction which is known to
692 /// dominate the current IP (if set) and which lies along
693 /// all paths of execution between the current IP and the
694 /// the point at which the cleanup comes into scope.
695 void ActivateCleanupBlock(EHScopeStack::stable_iterator Cleanup,
696 llvm::Instruction *DominatingIP);
697
698 /// Enters a new scope for capturing cleanups, all of which
699 /// will be executed once the scope is exited.
700 class RunCleanupsScope {
701 EHScopeStack::stable_iterator CleanupStackDepth, OldCleanupScopeDepth;
702 size_t LifetimeExtendedCleanupStackSize;
703 bool OldDidCallStackSave;
704 protected:
705 bool PerformCleanup;
706 private:
707
708 RunCleanupsScope(const RunCleanupsScope &) = delete;
709 void operator=(const RunCleanupsScope &) = delete;
710
711 protected:
712 CodeGenFunction& CGF;
713
714 public:
715 /// Enter a new cleanup scope.
716 explicit RunCleanupsScope(CodeGenFunction &CGF)
717 : PerformCleanup(true), CGF(CGF)
718 {
719 CleanupStackDepth = CGF.EHStack.stable_begin();
720 LifetimeExtendedCleanupStackSize =
721 CGF.LifetimeExtendedCleanupStack.size();
722 OldDidCallStackSave = CGF.DidCallStackSave;
723 CGF.DidCallStackSave = false;
724 OldCleanupScopeDepth = CGF.CurrentCleanupScopeDepth;
725 CGF.CurrentCleanupScopeDepth = CleanupStackDepth;
726 }
727
728 /// Exit this cleanup scope, emitting any accumulated cleanups.
729 ~RunCleanupsScope() {
730 if (PerformCleanup)
731 ForceCleanup();
732 }
733
734 /// Determine whether this scope requires any cleanups.
735 bool requiresCleanups() const {
736 return CGF.EHStack.stable_begin() != CleanupStackDepth;
737 }
738
739 /// Force the emission of cleanups now, instead of waiting
740 /// until this object is destroyed.
741 /// \param ValuesToReload - A list of values that need to be available at
742 /// the insertion point after cleanup emission. If cleanup emission created
743 /// a shared cleanup block, these value pointers will be rewritten.
744 /// Otherwise, they not will be modified.
745 void ForceCleanup(std::initializer_list<llvm::Value**> ValuesToReload = {}) {
746 assert(PerformCleanup && "Already forced cleanup");
747 CGF.DidCallStackSave = OldDidCallStackSave;
748 CGF.PopCleanupBlocks(CleanupStackDepth, LifetimeExtendedCleanupStackSize,
749 ValuesToReload);
750 PerformCleanup = false;
751 CGF.CurrentCleanupScopeDepth = OldCleanupScopeDepth;
752 }
753 };
754
755 // Cleanup stack depth of the RunCleanupsScope that was pushed most recently.
756 EHScopeStack::stable_iterator CurrentCleanupScopeDepth =
757 EHScopeStack::stable_end();
758
759 class LexicalScope : public RunCleanupsScope {
760 SourceRange Range;
761 SmallVector<const LabelDecl*, 4> Labels;
762 LexicalScope *ParentScope;
763
764 LexicalScope(const LexicalScope &) = delete;
765 void operator=(const LexicalScope &) = delete;
766
767 public:
768 /// Enter a new cleanup scope.
769 explicit LexicalScope(CodeGenFunction &CGF, SourceRange Range)
770 : RunCleanupsScope(CGF), Range(Range), ParentScope(CGF.CurLexicalScope) {
771 CGF.CurLexicalScope = this;
772 if (CGDebugInfo *DI = CGF.getDebugInfo())
773 DI->EmitLexicalBlockStart(CGF.Builder, Range.getBegin());
774 }
775
776 void addLabel(const LabelDecl *label) {
777 assert(PerformCleanup && "adding label to dead scope?");
778 Labels.push_back(label);
779 }
780
781 /// Exit this cleanup scope, emitting any accumulated
782 /// cleanups.
783 ~LexicalScope() {
784 if (CGDebugInfo *DI = CGF.getDebugInfo())
785 DI->EmitLexicalBlockEnd(CGF.Builder, Range.getEnd());
786
787 // If we should perform a cleanup, force them now. Note that
788 // this ends the cleanup scope before rescoping any labels.
789 if (PerformCleanup) {
790 ApplyDebugLocation DL(CGF, Range.getEnd());
791 ForceCleanup();
792 }
793 }
794
795 /// Force the emission of cleanups now, instead of waiting
796 /// until this object is destroyed.
797 void ForceCleanup() {
798 CGF.CurLexicalScope = ParentScope;
799 RunCleanupsScope::ForceCleanup();
800
801 if (!Labels.empty())
802 rescopeLabels();
803 }
804
805 bool hasLabels() const {
806 return !Labels.empty();
807 }
808
809 void rescopeLabels();
810 };
811
812 typedef llvm::DenseMap<const Decl *, Address> DeclMapTy;
813
814 /// The class used to assign some variables some temporarily addresses.
815 class OMPMapVars {
816 DeclMapTy SavedLocals;
817 DeclMapTy SavedTempAddresses;
818 OMPMapVars(const OMPMapVars &) = delete;
819 void operator=(const OMPMapVars &) = delete;
820
821 public:
822 explicit OMPMapVars() = default;
823 ~OMPMapVars() {
824 assert(SavedLocals.empty() && "Did not restored original addresses.");
825 };
826
827 /// Sets the address of the variable \p LocalVD to be \p TempAddr in
828 /// function \p CGF.
829 /// \return true if at least one variable was set already, false otherwise.
830 bool setVarAddr(CodeGenFunction &CGF, const VarDecl *LocalVD,
831 Address TempAddr) {
832 LocalVD = LocalVD->getCanonicalDecl();
833 // Only save it once.
834 if (SavedLocals.count(LocalVD)) return false;
835
836 // Copy the existing local entry to SavedLocals.
837 auto it = CGF.LocalDeclMap.find(LocalVD);
838 if (it != CGF.LocalDeclMap.end())
839 SavedLocals.try_emplace(LocalVD, it->second);
840 else
841 SavedLocals.try_emplace(LocalVD, Address::invalid());
842
843 // Generate the private entry.
844 QualType VarTy = LocalVD->getType();
845 if (VarTy->isReferenceType()) {
846 Address Temp = CGF.CreateMemTemp(VarTy);
847 CGF.Builder.CreateStore(TempAddr.getPointer(), Temp);
848 TempAddr = Temp;
849 }
850 SavedTempAddresses.try_emplace(LocalVD, TempAddr);
851
852 return true;
853 }
854
855 /// Applies new addresses to the list of the variables.
856 /// \return true if at least one variable is using new address, false
857 /// otherwise.
858 bool apply(CodeGenFunction &CGF) {
859 copyInto(SavedTempAddresses, CGF.LocalDeclMap);
860 SavedTempAddresses.clear();
861 return !SavedLocals.empty();
862 }
863
864 /// Restores original addresses of the variables.
865 void restore(CodeGenFunction &CGF) {
866 if (!SavedLocals.empty()) {
867 copyInto(SavedLocals, CGF.LocalDeclMap);
868 SavedLocals.clear();
869 }
870 }
871
872 private:
873 /// Copy all the entries in the source map over the corresponding
874 /// entries in the destination, which must exist.
875 static void copyInto(const DeclMapTy &Src, DeclMapTy &Dest) {
876 for (auto &Pair : Src) {
877 if (!Pair.second.isValid()) {
878 Dest.erase(Pair.first);
879 continue;
880 }
881
882 auto I = Dest.find(Pair.first);
883 if (I != Dest.end())
884 I->second = Pair.second;
885 else
886 Dest.insert(Pair);
887 }
888 }
889 };
890
891 /// The scope used to remap some variables as private in the OpenMP loop body
892 /// (or other captured region emitted without outlining), and to restore old
893 /// vars back on exit.
894 class OMPPrivateScope : public RunCleanupsScope {
895 OMPMapVars MappedVars;
896 OMPPrivateScope(const OMPPrivateScope &) = delete;
897 void operator=(const OMPPrivateScope &) = delete;
898
899 public:
900 /// Enter a new OpenMP private scope.
901 explicit OMPPrivateScope(CodeGenFunction &CGF) : RunCleanupsScope(CGF) {}
902
903 /// Registers \p LocalVD variable as a private and apply \p PrivateGen
904 /// function for it to generate corresponding private variable. \p
905 /// PrivateGen returns an address of the generated private variable.
906 /// \return true if the variable is registered as private, false if it has
907 /// been privatized already.
908 bool addPrivate(const VarDecl *LocalVD,
909 const llvm::function_ref<Address()> PrivateGen) {
910 assert(PerformCleanup && "adding private to dead scope");
911 return MappedVars.setVarAddr(CGF, LocalVD, PrivateGen());
912 }
913
914 /// Privatizes local variables previously registered as private.
915 /// Registration is separate from the actual privatization to allow
916 /// initializers use values of the original variables, not the private one.
917 /// This is important, for example, if the private variable is a class
918 /// variable initialized by a constructor that references other private
919 /// variables. But at initialization original variables must be used, not
920 /// private copies.
921 /// \return true if at least one variable was privatized, false otherwise.
922 bool Privatize() { return MappedVars.apply(CGF); }
923
924 void ForceCleanup() {
925 RunCleanupsScope::ForceCleanup();
926 MappedVars.restore(CGF);
927 }
928
929 /// Exit scope - all the mapped variables are restored.
930 ~OMPPrivateScope() {
931 if (PerformCleanup)
932 ForceCleanup();
933 }
934
935 /// Checks if the global variable is captured in current function.
936 bool isGlobalVarCaptured(const VarDecl *VD) const {
937 VD = VD->getCanonicalDecl();
938 return !VD->isLocalVarDeclOrParm() && CGF.LocalDeclMap.count(VD) > 0;
939 }
940 };
941
942 /// Takes the old cleanup stack size and emits the cleanup blocks
943 /// that have been added.
944 void
945 PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize,
946 std::initializer_list<llvm::Value **> ValuesToReload = {});
947
948 /// Takes the old cleanup stack size and emits the cleanup blocks
949 /// that have been added, then adds all lifetime-extended cleanups from
950 /// the given position to the stack.
951 void
952 PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize,
953 size_t OldLifetimeExtendedStackSize,
954 std::initializer_list<llvm::Value **> ValuesToReload = {});
955
956 void ResolveBranchFixups(llvm::BasicBlock *Target);
957
958 /// The given basic block lies in the current EH scope, but may be a
959 /// target of a potentially scope-crossing jump; get a stable handle
960 /// to which we can perform this jump later.
961 JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target) {
962 return JumpDest(Target,
963 EHStack.getInnermostNormalCleanup(),
964 NextCleanupDestIndex++);
965 }
966
967 /// The given basic block lies in the current EH scope, but may be a
968 /// target of a potentially scope-crossing jump; get a stable handle
969 /// to which we can perform this jump later.
970 JumpDest getJumpDestInCurrentScope(StringRef Name = StringRef()) {
971 return getJumpDestInCurrentScope(createBasicBlock(Name));
972 }
973
974 /// EmitBranchThroughCleanup - Emit a branch from the current insert
975 /// block through the normal cleanup handling code (if any) and then
976 /// on to \arg Dest.
977 void EmitBranchThroughCleanup(JumpDest Dest);
978
979 /// isObviouslyBranchWithoutCleanups - Return true if a branch to the
980 /// specified destination obviously has no cleanups to run. 'false' is always
981 /// a conservatively correct answer for this method.
982 bool isObviouslyBranchWithoutCleanups(JumpDest Dest) const;
983
984 /// popCatchScope - Pops the catch scope at the top of the EHScope
985 /// stack, emitting any required code (other than the catch handlers
986 /// themselves).
987 void popCatchScope();
988
989 llvm::BasicBlock *getEHResumeBlock(bool isCleanup);
990 llvm::BasicBlock *getEHDispatchBlock(EHScopeStack::stable_iterator scope);
991 llvm::BasicBlock *
992 getFuncletEHDispatchBlock(EHScopeStack::stable_iterator scope);
993
994 /// An object to manage conditionally-evaluated expressions.
995 class ConditionalEvaluation {
996 llvm::BasicBlock *StartBB;
997
998 public:
999 ConditionalEvaluation(CodeGenFunction &CGF)
1000 : StartBB(CGF.Builder.GetInsertBlock()) {}
1001
1002 void begin(CodeGenFunction &CGF) {
1003 assert(CGF.OutermostConditional != this);
1004 if (!CGF.OutermostConditional)
1005 CGF.OutermostConditional = this;
1006 }
1007
1008 void end(CodeGenFunction &CGF) {
1009 assert(CGF.OutermostConditional != nullptr);
1010 if (CGF.OutermostConditional == this)
1011 CGF.OutermostConditional = nullptr;
1012 }
1013
1014 /// Returns a block which will be executed prior to each
1015 /// evaluation of the conditional code.
1016 llvm::BasicBlock *getStartingBlock() const {
1017 return StartBB;
1018 }
1019 };
1020
1021 /// isInConditionalBranch - Return true if we're currently emitting
1022 /// one branch or the other of a conditional expression.
1023 bool isInConditionalBranch() const { return OutermostConditional != nullptr; }
1024
1025 void setBeforeOutermostConditional(llvm::Value *value, Address addr) {
1026 assert(isInConditionalBranch());
1027 llvm::BasicBlock *block = OutermostConditional->getStartingBlock();
1028 auto store = new llvm::StoreInst(value, addr.getPointer(), &block->back());
1029 store->setAlignment(addr.getAlignment().getQuantity());
1030 }
1031
1032 /// An RAII object to record that we're evaluating a statement
1033 /// expression.
1034 class StmtExprEvaluation {
1035 CodeGenFunction &CGF;
1036
1037 /// We have to save the outermost conditional: cleanups in a
1038 /// statement expression aren't conditional just because the
1039 /// StmtExpr is.
1040 ConditionalEvaluation *SavedOutermostConditional;
1041
1042 public:
1043 StmtExprEvaluation(CodeGenFunction &CGF)
1044 : CGF(CGF), SavedOutermostConditional(CGF.OutermostConditional) {
1045 CGF.OutermostConditional = nullptr;
1046 }
1047
1048 ~StmtExprEvaluation() {
1049 CGF.OutermostConditional = SavedOutermostConditional;
1050 CGF.EnsureInsertPoint();
1051 }
1052 };
1053
1054 /// An object which temporarily prevents a value from being
1055 /// destroyed by aggressive peephole optimizations that assume that
1056 /// all uses of a value have been realized in the IR.
1057 class PeepholeProtection {
1058 llvm::Instruction *Inst;
1059 friend class CodeGenFunction;
1060
1061 public:
1062 PeepholeProtection() : Inst(nullptr) {}
1063 };
1064
1065 /// A non-RAII class containing all the information about a bound
1066 /// opaque value. OpaqueValueMapping, below, is a RAII wrapper for
1067 /// this which makes individual mappings very simple; using this
1068 /// class directly is useful when you have a variable number of
1069 /// opaque values or don't want the RAII functionality for some
1070 /// reason.
1071 class OpaqueValueMappingData {
1072 const OpaqueValueExpr *OpaqueValue;
1073 bool BoundLValue;
1074 CodeGenFunction::PeepholeProtection Protection;
1075
1076 OpaqueValueMappingData(const OpaqueValueExpr *ov,
1077 bool boundLValue)
1078 : OpaqueValue(ov), BoundLValue(boundLValue) {}
1079 public:
1080 OpaqueValueMappingData() : OpaqueValue(nullptr) {}
1081
1082 static bool shouldBindAsLValue(const Expr *expr) {
1083 // gl-values should be bound as l-values for obvious reasons.
1084 // Records should be bound as l-values because IR generation
1085 // always keeps them in memory. Expressions of function type
1086 // act exactly like l-values but are formally required to be
1087 // r-values in C.
1088 return expr->isGLValue() ||
1089 expr->getType()->isFunctionType() ||
1090 hasAggregateEvaluationKind(expr->getType());
1091 }
1092
1093 static OpaqueValueMappingData bind(CodeGenFunction &CGF,
1094 const OpaqueValueExpr *ov,
1095 const Expr *e) {
1096 if (shouldBindAsLValue(ov))
1097 return bind(CGF, ov, CGF.EmitLValue(e));
1098 return bind(CGF, ov, CGF.EmitAnyExpr(e));
1099 }
1100
1101 static OpaqueValueMappingData bind(CodeGenFunction &CGF,
1102 const OpaqueValueExpr *ov,
1103 const LValue &lv) {
1104 assert(shouldBindAsLValue(ov));
1105 CGF.OpaqueLValues.insert(std::make_pair(ov, lv));
1106 return OpaqueValueMappingData(ov, true);
1107 }
1108
1109 static OpaqueValueMappingData bind(CodeGenFunction &CGF,
1110 const OpaqueValueExpr *ov,
1111 const RValue &rv) {
1112 assert(!shouldBindAsLValue(ov));
1113 CGF.OpaqueRValues.insert(std::make_pair(ov, rv));
1114
1115 OpaqueValueMappingData data(ov, false);
1116
1117 // Work around an extremely aggressive peephole optimization in
1118 // EmitScalarConversion which assumes that all other uses of a
1119 // value are extant.
1120 data.Protection = CGF.protectFromPeepholes(rv);
1121
1122 return data;
1123 }
1124
1125 bool isValid() const { return OpaqueValue != nullptr; }
1126 void clear() { OpaqueValue = nullptr; }
1127
1128 void unbind(CodeGenFunction &CGF) {
1129 assert(OpaqueValue && "no data to unbind!");
1130
1131 if (BoundLValue) {
1132 CGF.OpaqueLValues.erase(OpaqueValue);
1133 } else {
1134 CGF.OpaqueRValues.erase(OpaqueValue);
1135 CGF.unprotectFromPeepholes(Protection);
1136 }
1137 }
1138 };
1139
1140 /// An RAII object to set (and then clear) a mapping for an OpaqueValueExpr.
1141 class OpaqueValueMapping {
1142 CodeGenFunction &CGF;
1143 OpaqueValueMappingData Data;
1144
1145 public:
1146 static bool shouldBindAsLValue(const Expr *expr) {
1147 return OpaqueValueMappingData::shouldBindAsLValue(expr);
1148 }
1149
1150 /// Build the opaque value mapping for the given conditional
1151 /// operator if it's the GNU ?: extension. This is a common
1152 /// enough pattern that the convenience operator is really
1153 /// helpful.
1154 ///
1155 OpaqueValueMapping(CodeGenFunction &CGF,
1156 const AbstractConditionalOperator *op) : CGF(CGF) {
1157 if (isa<ConditionalOperator>(op))
1158 // Leave Data empty.
1159 return;
1160
1161 const BinaryConditionalOperator *e = cast<BinaryConditionalOperator>(op);
1162 Data = OpaqueValueMappingData::bind(CGF, e->getOpaqueValue(),
1163 e->getCommon());
1164 }
1165
1166 /// Build the opaque value mapping for an OpaqueValueExpr whose source
1167 /// expression is set to the expression the OVE represents.
1168 OpaqueValueMapping(CodeGenFunction &CGF, const OpaqueValueExpr *OV)
1169 : CGF(CGF) {
1170 if (OV) {
1171 assert(OV->getSourceExpr() && "wrong form of OpaqueValueMapping used "
1172 "for OVE with no source expression");
1173 Data = OpaqueValueMappingData::bind(CGF, OV, OV->getSourceExpr());
1174 }
1175 }
1176
1177 OpaqueValueMapping(CodeGenFunction &CGF,
1178 const OpaqueValueExpr *opaqueValue,
1179 LValue lvalue)
1180 : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, lvalue)) {
1181 }
1182
1183 OpaqueValueMapping(CodeGenFunction &CGF,
1184 const OpaqueValueExpr *opaqueValue,
1185 RValue rvalue)
1186 : CGF(CGF), Data(OpaqueValueMappingData::bind(CGF, opaqueValue, rvalue)) {
1187 }
1188
1189 void pop() {
1190 Data.unbind(CGF);
1191 Data.clear();
1192 }
1193
1194 ~OpaqueValueMapping() {
1195 if (Data.isValid()) Data.unbind(CGF);
1196 }
1197 };
1198
1199 private:
1200 CGDebugInfo *DebugInfo;
1201 /// Used to create unique names for artificial VLA size debug info variables.
1202 unsigned VLAExprCounter = 0;
1203 bool DisableDebugInfo = false;
1204
1205 /// DidCallStackSave - Whether llvm.stacksave has been called. Used to avoid
1206 /// calling llvm.stacksave for multiple VLAs in the same scope.
1207 bool DidCallStackSave = false;
1208
1209 /// IndirectBranch - The first time an indirect goto is seen we create a block
1210 /// with an indirect branch. Every time we see the address of a label taken,
1211 /// we add the label to the indirect goto. Every subsequent indirect goto is
1212 /// codegen'd as a jump to the IndirectBranch's basic block.
1213 llvm::IndirectBrInst *IndirectBranch = nullptr;
1214
1215 /// LocalDeclMap - This keeps track of the LLVM allocas or globals for local C
1216 /// decls.
1217 DeclMapTy LocalDeclMap;
1218
1219 // Keep track of the cleanups for callee-destructed parameters pushed to the
1220 // cleanup stack so that they can be deactivated later.
1221 llvm::DenseMap<const ParmVarDecl *, EHScopeStack::stable_iterator>
1222 CalleeDestructedParamCleanups;
1223
1224 /// SizeArguments - If a ParmVarDecl had the pass_object_size attribute, this
1225 /// will contain a mapping from said ParmVarDecl to its implicit "object_size"
1226 /// parameter.
1227 llvm::SmallDenseMap<const ParmVarDecl *, const ImplicitParamDecl *, 2>
1228 SizeArguments;
1229
1230 /// Track escaped local variables with auto storage. Used during SEH
1231 /// outlining to produce a call to llvm.localescape.
1232 llvm::DenseMap<llvm::AllocaInst *, int> EscapedLocals;
1233
1234 /// LabelMap - This keeps track of the LLVM basic block for each C label.
1235 llvm::DenseMap<const LabelDecl*, JumpDest> LabelMap;
1236
1237 // BreakContinueStack - This keeps track of where break and continue
1238 // statements should jump to.
1239 struct BreakContinue {
1240 BreakContinue(JumpDest Break, JumpDest Continue)
1241 : BreakBlock(Break), ContinueBlock(Continue) {}
1242
1243 JumpDest BreakBlock;
1244 JumpDest ContinueBlock;
1245 };
1246 SmallVector<BreakContinue, 8> BreakContinueStack;
1247
1248 /// Handles cancellation exit points in OpenMP-related constructs.
1249 class OpenMPCancelExitStack {
1250 /// Tracks cancellation exit point and join point for cancel-related exit
1251 /// and normal exit.
1252 struct CancelExit {
1253 CancelExit() = default;
1254 CancelExit(OpenMPDirectiveKind Kind, JumpDest ExitBlock,
1255 JumpDest ContBlock)
1256 : Kind(Kind), ExitBlock(ExitBlock), ContBlock(ContBlock) {}
1257 OpenMPDirectiveKind Kind = OMPD_unknown;
1258 /// true if the exit block has been emitted already by the special
1259 /// emitExit() call, false if the default codegen is used.
1260 bool HasBeenEmitted = false;
1261 JumpDest ExitBlock;
1262 JumpDest ContBlock;
1263 };
1264
1265 SmallVector<CancelExit, 8> Stack;
1266
1267 public:
1268 OpenMPCancelExitStack() : Stack(1) {}
1269 ~OpenMPCancelExitStack() = default;
1270 /// Fetches the exit block for the current OpenMP construct.
1271 JumpDest getExitBlock() const { return Stack.back().ExitBlock; }
1272 /// Emits exit block with special codegen procedure specific for the related
1273 /// OpenMP construct + emits code for normal construct cleanup.
1274 void emitExit(CodeGenFunction &CGF, OpenMPDirectiveKind Kind,
1275 const llvm::function_ref<void(CodeGenFunction &)> CodeGen) {
1276 if (Stack.back().Kind == Kind && getExitBlock().isValid()) {
1277 assert(CGF.getOMPCancelDestination(Kind).isValid());
1278 assert(CGF.HaveInsertPoint());
1279 assert(!Stack.back().HasBeenEmitted);
1280 auto IP = CGF.Builder.saveAndClearIP();
1281 CGF.EmitBlock(Stack.back().ExitBlock.getBlock());
1282 CodeGen(CGF);
1283 CGF.EmitBranch(Stack.back().ContBlock.getBlock());
1284 CGF.Builder.restoreIP(IP);
1285 Stack.back().HasBeenEmitted = true;
1286 }
1287 CodeGen(CGF);
1288 }
1289 /// Enter the cancel supporting \a Kind construct.
1290 /// \param Kind OpenMP directive that supports cancel constructs.
1291 /// \param HasCancel true, if the construct has inner cancel directive,
1292 /// false otherwise.
1293 void enter(CodeGenFunction &CGF, OpenMPDirectiveKind Kind, bool HasCancel) {
1294 Stack.push_back({Kind,
1295 HasCancel ? CGF.getJumpDestInCurrentScope("cancel.exit")
1296 : JumpDest(),
1297 HasCancel ? CGF.getJumpDestInCurrentScope("cancel.cont")
1298 : JumpDest()});
1299 }
1300 /// Emits default exit point for the cancel construct (if the special one
1301 /// has not be used) + join point for cancel/normal exits.
1302 void exit(CodeGenFunction &CGF) {
1303 if (getExitBlock().isValid()) {
1304 assert(CGF.getOMPCancelDestination(Stack.back().Kind).isValid());
1305 bool HaveIP = CGF.HaveInsertPoint();
1306 if (!Stack.back().HasBeenEmitted) {
1307 if (HaveIP)
1308 CGF.EmitBranchThroughCleanup(Stack.back().ContBlock);
1309 CGF.EmitBlock(Stack.back().ExitBlock.getBlock());
1310 CGF.EmitBranchThroughCleanup(Stack.back().ContBlock);
1311 }
1312 CGF.EmitBlock(Stack.back().ContBlock.getBlock());
1313 if (!HaveIP) {
1314 CGF.Builder.CreateUnreachable();
1315 CGF.Builder.ClearInsertionPoint();
1316 }
1317 }
1318 Stack.pop_back();
1319 }
1320 };
1321 OpenMPCancelExitStack OMPCancelStack;
1322
1323 CodeGenPGO PGO;
1324
1325 /// Calculate branch weights appropriate for PGO data
1326 llvm::MDNode *createProfileWeights(uint64_t TrueCount, uint64_t FalseCount);
1327 llvm::MDNode *createProfileWeights(ArrayRef<uint64_t> Weights);
1328 llvm::MDNode *createProfileWeightsForLoop(const Stmt *Cond,
1329 uint64_t LoopCount);
1330
1331 public:
1332 /// Increment the profiler's counter for the given statement by \p StepV.
1333 /// If \p StepV is null, the default increment is 1.
1334 void incrementProfileCounter(const Stmt *S, llvm::Value *StepV = nullptr) {
1335 if (CGM.getCodeGenOpts().hasProfileClangInstr())
1336 PGO.emitCounterIncrement(Builder, S, StepV);
1337 PGO.setCurrentStmt(S);
1338 }
1339
1340 /// Get the profiler's count for the given statement.
1341 uint64_t getProfileCount(const Stmt *S) {
1342 Optional<uint64_t> Count = PGO.getStmtCount(S);
1343 if (!Count.hasValue())
1344 return 0;
1345 return *Count;
1346 }
1347
1348 /// Set the profiler's current count.
1349 void setCurrentProfileCount(uint64_t Count) {
1350 PGO.setCurrentRegionCount(Count);
1351 }
1352
1353 /// Get the profiler's current count. This is generally the count for the most
1354 /// recently incremented counter.
1355 uint64_t getCurrentProfileCount() {
1356 return PGO.getCurrentRegionCount();
1357 }
1358
1359 private:
1360
1361 /// SwitchInsn - This is nearest current switch instruction. It is null if
1362 /// current context is not in a switch.
1363 llvm::SwitchInst *SwitchInsn = nullptr;
1364 /// The branch weights of SwitchInsn when doing instrumentation based PGO.
1365 SmallVector<uint64_t, 16> *SwitchWeights = nullptr;
1366
1367 /// CaseRangeBlock - This block holds if condition check for last case
1368 /// statement range in current switch instruction.
1369 llvm::BasicBlock *CaseRangeBlock = nullptr;
1370
1371 /// OpaqueLValues - Keeps track of the current set of opaque value
1372 /// expressions.
1373 llvm::DenseMap<const OpaqueValueExpr *, LValue> OpaqueLValues;
1374 llvm::DenseMap<const OpaqueValueExpr *, RValue> OpaqueRValues;
1375
1376 // VLASizeMap - This keeps track of the associated size for each VLA type.
1377 // We track this by the size expression rather than the type itself because
1378 // in certain situations, like a const qualifier applied to an VLA typedef,
1379 // multiple VLA types can share the same size expression.
1380 // FIXME: Maybe this could be a stack of maps that is pushed/popped as we
1381 // enter/leave scopes.
1382 llvm::DenseMap<const Expr*, llvm::Value*> VLASizeMap;
1383
1384 /// A block containing a single 'unreachable' instruction. Created
1385 /// lazily by getUnreachableBlock().
1386 llvm::BasicBlock *UnreachableBlock = nullptr;
1387
1388 /// Counts of the number return expressions in the function.
1389 unsigned NumReturnExprs = 0;
1390
1391 /// Count the number of simple (constant) return expressions in the function.
1392 unsigned NumSimpleReturnExprs = 0;
1393
1394 /// The last regular (non-return) debug location (breakpoint) in the function.
1395 SourceLocation LastStopPoint;
1396
1397 public:
1398 /// A scope within which we are constructing the fields of an object which
1399 /// might use a CXXDefaultInitExpr. This stashes away a 'this' value to use
1400 /// if we need to evaluate a CXXDefaultInitExpr within the evaluation.
1401 class FieldConstructionScope {
1402 public:
1403 FieldConstructionScope(CodeGenFunction &CGF, Address This)
1404 : CGF(CGF), OldCXXDefaultInitExprThis(CGF.CXXDefaultInitExprThis) {
1405 CGF.CXXDefaultInitExprThis = This;
1406 }
1407 ~FieldConstructionScope() {
1408 CGF.CXXDefaultInitExprThis = OldCXXDefaultInitExprThis;
1409 }
1410
1411 private:
1412 CodeGenFunction &CGF;
1413 Address OldCXXDefaultInitExprThis;
1414 };
1415
1416 /// The scope of a CXXDefaultInitExpr. Within this scope, the value of 'this'
1417 /// is overridden to be the object under construction.
1418 class CXXDefaultInitExprScope {
1419 public:
1420 CXXDefaultInitExprScope(CodeGenFunction &CGF)
1421 : CGF(CGF), OldCXXThisValue(CGF.CXXThisValue),
1422 OldCXXThisAlignment(CGF.CXXThisAlignment) {
1423 CGF.CXXThisValue = CGF.CXXDefaultInitExprThis.getPointer();
1424 CGF.CXXThisAlignment = CGF.CXXDefaultInitExprThis.getAlignment();
1425 }
1426 ~CXXDefaultInitExprScope() {
1427 CGF.CXXThisValue = OldCXXThisValue;
1428 CGF.CXXThisAlignment = OldCXXThisAlignment;
1429 }
1430
1431 public:
1432 CodeGenFunction &CGF;
1433 llvm::Value *OldCXXThisValue;
1434 CharUnits OldCXXThisAlignment;
1435 };
1436
1437 /// The scope of an ArrayInitLoopExpr. Within this scope, the value of the
1438 /// current loop index is overridden.
1439 class ArrayInitLoopExprScope {
1440 public:
1441 ArrayInitLoopExprScope(CodeGenFunction &CGF, llvm::Value *Index)
1442 : CGF(CGF), OldArrayInitIndex(CGF.ArrayInitIndex) {
1443 CGF.ArrayInitIndex = Index;
1444 }
1445 ~ArrayInitLoopExprScope() {
1446 CGF.ArrayInitIndex = OldArrayInitIndex;
1447 }
1448
1449 private:
1450 CodeGenFunction &CGF;
1451 llvm::Value *OldArrayInitIndex;
1452 };
1453
1454 class InlinedInheritingConstructorScope {
1455 public:
1456 InlinedInheritingConstructorScope(CodeGenFunction &CGF, GlobalDecl GD)
1457 : CGF(CGF), OldCurGD(CGF.CurGD), OldCurFuncDecl(CGF.CurFuncDecl),
1458 OldCurCodeDecl(CGF.CurCodeDecl),
1459 OldCXXABIThisDecl(CGF.CXXABIThisDecl),
1460 OldCXXABIThisValue(CGF.CXXABIThisValue),
1461 OldCXXThisValue(CGF.CXXThisValue),
1462 OldCXXABIThisAlignment(CGF.CXXABIThisAlignment),
1463 OldCXXThisAlignment(CGF.CXXThisAlignment),
1464 OldReturnValue(CGF.ReturnValue), OldFnRetTy(CGF.FnRetTy),
1465 OldCXXInheritedCtorInitExprArgs(
1466 std::move(CGF.CXXInheritedCtorInitExprArgs)) {
1467 CGF.CurGD = GD;
1468 CGF.CurFuncDecl = CGF.CurCodeDecl =
1469 cast<CXXConstructorDecl>(GD.getDecl());
1470 CGF.CXXABIThisDecl = nullptr;
1471 CGF.CXXABIThisValue = nullptr;
1472 CGF.CXXThisValue = nullptr;
1473 CGF.CXXABIThisAlignment = CharUnits();
1474 CGF.CXXThisAlignment = CharUnits();
1475 CGF.ReturnValue = Address::invalid();
1476 CGF.FnRetTy = QualType();
1477 CGF.CXXInheritedCtorInitExprArgs.clear();
1478 }
1479 ~InlinedInheritingConstructorScope() {
1480 CGF.CurGD = OldCurGD;
1481 CGF.CurFuncDecl = OldCurFuncDecl;
1482 CGF.CurCodeDecl = OldCurCodeDecl;
1483 CGF.CXXABIThisDecl = OldCXXABIThisDecl;
1484 CGF.CXXABIThisValue = OldCXXABIThisValue;
1485 CGF.CXXThisValue = OldCXXThisValue;
1486 CGF.CXXABIThisAlignment = OldCXXABIThisAlignment;
1487 CGF.CXXThisAlignment = OldCXXThisAlignment;
1488 CGF.ReturnValue = OldReturnValue;
1489 CGF.FnRetTy = OldFnRetTy;
1490 CGF.CXXInheritedCtorInitExprArgs =
1491 std::move(OldCXXInheritedCtorInitExprArgs);
1492 }
1493
1494 private:
1495 CodeGenFunction &CGF;
1496 GlobalDecl OldCurGD;
1497 const Decl *OldCurFuncDecl;
1498 const Decl *OldCurCodeDecl;
1499 ImplicitParamDecl *OldCXXABIThisDecl;
1500 llvm::Value *OldCXXABIThisValue;
1501 llvm::Value *OldCXXThisValue;
1502 CharUnits OldCXXABIThisAlignment;
1503 CharUnits OldCXXThisAlignment;
1504 Address OldReturnValue;
1505 QualType OldFnRetTy;
1506 CallArgList OldCXXInheritedCtorInitExprArgs;
1507 };
1508
1509 private:
1510 /// CXXThisDecl - When generating code for a C++ member function,
1511 /// this will hold the implicit 'this' declaration.
1512 ImplicitParamDecl *CXXABIThisDecl = nullptr;
1513 llvm::Value *CXXABIThisValue = nullptr;
1514 llvm::Value *CXXThisValue = nullptr;
1515 CharUnits CXXABIThisAlignment;
1516 CharUnits CXXThisAlignment;
1517
1518 /// The value of 'this' to use when evaluating CXXDefaultInitExprs within
1519 /// this expression.
1520 Address CXXDefaultInitExprThis = Address::invalid();
1521
1522 /// The current array initialization index when evaluating an
1523 /// ArrayInitIndexExpr within an ArrayInitLoopExpr.
1524 llvm::Value *ArrayInitIndex = nullptr;
1525
1526 /// The values of function arguments to use when evaluating
1527 /// CXXInheritedCtorInitExprs within this context.
1528 CallArgList CXXInheritedCtorInitExprArgs;
1529
1530 /// CXXStructorImplicitParamDecl - When generating code for a constructor or
1531 /// destructor, this will hold the implicit argument (e.g. VTT).
1532 ImplicitParamDecl *CXXStructorImplicitParamDecl = nullptr;
1533 llvm::Value *CXXStructorImplicitParamValue = nullptr;
1534
1535 /// OutermostConditional - Points to the outermost active
1536 /// conditional control. This is used so that we know if a
1537 /// temporary should be destroyed conditionally.
1538 ConditionalEvaluation *OutermostConditional = nullptr;
1539
1540 /// The current lexical scope.
1541 LexicalScope *CurLexicalScope = nullptr;
1542
1543 /// The current source location that should be used for exception
1544 /// handling code.
1545 SourceLocation CurEHLocation;
1546
1547 /// BlockByrefInfos - For each __block variable, contains
1548 /// information about the layout of the variable.
1549 llvm::DenseMap<const ValueDecl *, BlockByrefInfo> BlockByrefInfos;
1550
1551 /// Used by -fsanitize=nullability-return to determine whether the return
1552 /// value can be checked.
1553 llvm::Value *RetValNullabilityPrecondition = nullptr;
1554
1555 /// Check if -fsanitize=nullability-return instrumentation is required for
1556 /// this function.
1557 bool requiresReturnValueNullabilityCheck() const {
1558 return RetValNullabilityPrecondition;
1559 }
1560
1561 /// Used to store precise source locations for return statements by the
1562 /// runtime return value checks.
1563 Address ReturnLocation = Address::invalid();
1564
1565 /// Check if the return value of this function requires sanitization.
1566 bool requiresReturnValueCheck() const {
1567 return requiresReturnValueNullabilityCheck() ||
1568 (SanOpts.has(SanitizerKind::ReturnsNonnullAttribute) &&
1569 CurCodeDecl && CurCodeDecl->getAttr<ReturnsNonNullAttr>());
1570 }
1571
1572 llvm::BasicBlock *TerminateLandingPad = nullptr;
1573 llvm::BasicBlock *TerminateHandler = nullptr;
1574 llvm::BasicBlock *TrapBB = nullptr;
1575
1576 /// Terminate funclets keyed by parent funclet pad.
1577 llvm::MapVector<llvm::Value *, llvm::BasicBlock *> TerminateFunclets;
1578
1579 /// Largest vector width used in ths function. Will be used to create a
1580 /// function attribute.
1581 unsigned LargestVectorWidth = 0;
1582
1583 /// True if we need emit the life-time markers.
1584 const bool ShouldEmitLifetimeMarkers;
1585
1586 /// Add OpenCL kernel arg metadata and the kernel attribute metadata to
1587 /// the function metadata.
1588 void EmitOpenCLKernelMetadata(const FunctionDecl *FD,
1589 llvm::Function *Fn);
1590
1591 public:
1592 CodeGenFunction(CodeGenModule &cgm, bool suppressNewContext=false);
1593 ~CodeGenFunction();
1594
1595 CodeGenTypes &getTypes() const { return CGM.getTypes(); }
1596 ASTContext &getContext() const { return CGM.getContext(); }
1597 CGDebugInfo *getDebugInfo() {
1598 if (DisableDebugInfo)
1599 return nullptr;
1600 return DebugInfo;
1601 }
1602 void disableDebugInfo() { DisableDebugInfo = true; }
1603 void enableDebugInfo() { DisableDebugInfo = false; }
1604
1605 bool shouldUseFusedARCCalls() {
1606 return CGM.getCodeGenOpts().OptimizationLevel == 0;
1607 }
1608
1609 const LangOptions &getLangOpts() const { return CGM.getLangOpts(); }
1610
1611 /// Returns a pointer to the function's exception object and selector slot,
1612 /// which is assigned in every landing pad.
1613 Address getExceptionSlot();
1614 Address getEHSelectorSlot();
1615
1616 /// Returns the contents of the function's exception object and selector
1617 /// slots.
1618 llvm::Value *getExceptionFromSlot();
1619 llvm::Value *getSelectorFromSlot();
1620
1621 Address getNormalCleanupDestSlot();
1622
1623 llvm::BasicBlock *getUnreachableBlock() {
1624 if (!UnreachableBlock) {
1625 UnreachableBlock = createBasicBlock("unreachable");
1626 new llvm::UnreachableInst(getLLVMContext(), UnreachableBlock);
1627 }
1628 return UnreachableBlock;
1629 }
1630
1631 llvm::BasicBlock *getInvokeDest() {
1632 if (!EHStack.requiresLandingPad()) return nullptr;
1633 return getInvokeDestImpl();
1634 }
1635
1636 bool currentFunctionUsesSEHTry() const { return CurSEHParent != nullptr; }
1637
1638 const TargetInfo &getTarget() const { return Target; }
1639 llvm::LLVMContext &getLLVMContext() { return CGM.getLLVMContext(); }
1640 const TargetCodeGenInfo &getTargetHooks() const {
1641 return CGM.getTargetCodeGenInfo();
1642 }
1643
1644 //===--------------------------------------------------------------------===//
1645 // Cleanups
1646 //===--------------------------------------------------------------------===//
1647
1648 typedef void Destroyer(CodeGenFunction &CGF, Address addr, QualType ty);
1649
1650 void pushIrregularPartialArrayCleanup(llvm::Value *arrayBegin,
1651 Address arrayEndPointer,
1652 QualType elementType,
1653 CharUnits elementAlignment,
1654 Destroyer *destroyer);
1655 void pushRegularPartialArrayCleanup(llvm::Value *arrayBegin,
1656 llvm::Value *arrayEnd,
1657 QualType elementType,
1658 CharUnits elementAlignment,
1659 Destroyer *destroyer);
1660
1661 void pushDestroy(QualType::DestructionKind dtorKind,
1662 Address addr, QualType type);
1663 void pushEHDestroy(QualType::DestructionKind dtorKind,
1664 Address addr, QualType type);
1665 void pushDestroy(CleanupKind kind, Address addr, QualType type,
1666 Destroyer *destroyer, bool useEHCleanupForArray);
1667 void pushLifetimeExtendedDestroy(CleanupKind kind, Address addr,
1668 QualType type, Destroyer *destroyer,
1669 bool useEHCleanupForArray);
1670 void pushCallObjectDeleteCleanup(const FunctionDecl *OperatorDelete,
1671 llvm::Value *CompletePtr,
1672 QualType ElementType);
1673 void pushStackRestore(CleanupKind kind, Address SPMem);
1674 void emitDestroy(Address addr, QualType type, Destroyer *destroyer,
1675 bool useEHCleanupForArray);
1676 llvm::Function *generateDestroyHelper(Address addr, QualType type,
1677 Destroyer *destroyer,
1678 bool useEHCleanupForArray,
1679 const VarDecl *VD);
1680 void emitArrayDestroy(llvm::Value *begin, llvm::Value *end,
1681 QualType elementType, CharUnits elementAlign,
1682 Destroyer *destroyer,
1683 bool checkZeroLength, bool useEHCleanup);
1684
1685 Destroyer *getDestroyer(QualType::DestructionKind destructionKind);
1686
1687 /// Determines whether an EH cleanup is required to destroy a type
1688 /// with the given destruction kind.
1689 bool needsEHCleanup(QualType::DestructionKind kind) {
1690 switch (kind) {
1691 case QualType::DK_none:
1692 return false;
1693 case QualType::DK_cxx_destructor:
1694 case QualType::DK_objc_weak_lifetime:
1695 case QualType::DK_nontrivial_c_struct:
1696 return getLangOpts().Exceptions;
1697 case QualType::DK_objc_strong_lifetime:
1698 return getLangOpts().Exceptions &&
1699 CGM.getCodeGenOpts().ObjCAutoRefCountExceptions;
1700 }
1701 llvm_unreachable("bad destruction kind");
1702 }
1703
1704 CleanupKind getCleanupKind(QualType::DestructionKind kind) {
1705 return (needsEHCleanup(kind) ? NormalAndEHCleanup : NormalCleanup);
1706 }
1707
1708 //===--------------------------------------------------------------------===//
1709 // Objective-C
1710 //===--------------------------------------------------------------------===//
1711
1712 void GenerateObjCMethod(const ObjCMethodDecl *OMD);
1713
1714 void StartObjCMethod(const ObjCMethodDecl *MD, const ObjCContainerDecl *CD);
1715
1716 /// GenerateObjCGetter - Synthesize an Objective-C property getter function.
1717 void GenerateObjCGetter(ObjCImplementationDecl *IMP,
1718 const ObjCPropertyImplDecl *PID);
1719 void generateObjCGetterBody(const ObjCImplementationDecl *classImpl,
1720 const ObjCPropertyImplDecl *propImpl,
1721 const ObjCMethodDecl *GetterMothodDecl,
1722 llvm::Constant *AtomicHelperFn);
1723
1724 void GenerateObjCCtorDtorMethod(ObjCImplementationDecl *IMP,
1725 ObjCMethodDecl *MD, bool ctor);
1726
1727 /// GenerateObjCSetter - Synthesize an Objective-C property setter function
1728 /// for the given property.
1729 void GenerateObjCSetter(ObjCImplementationDecl *IMP,
1730 const ObjCPropertyImplDecl *PID);
1731 void generateObjCSetterBody(const ObjCImplementationDecl *classImpl,
1732 const ObjCPropertyImplDecl *propImpl,
1733 llvm::Constant *AtomicHelperFn);
1734
1735 //===--------------------------------------------------------------------===//
1736 // Block Bits
1737 //===--------------------------------------------------------------------===//
1738
1739 /// Emit block literal.
1740 /// \return an LLVM value which is a pointer to a struct which contains
1741 /// information about the block, including the block invoke function, the
1742 /// captured variables, etc.
1743 llvm::Value *EmitBlockLiteral(const BlockExpr *);
1744 static void destroyBlockInfos(CGBlockInfo *info);
1745
1746 llvm::Function *GenerateBlockFunction(GlobalDecl GD,
1747 const CGBlockInfo &Info,
1748 const DeclMapTy &ldm,
1749 bool IsLambdaConversionToBlock,
1750 bool BuildGlobalBlock);
1751
1752 /// Check if \p T is a C++ class that has a destructor that can throw.
1753 static bool cxxDestructorCanThrow(QualType T);
1754
1755 llvm::Constant *GenerateCopyHelperFunction(const CGBlockInfo &blockInfo);
1756 llvm::Constant *GenerateDestroyHelperFunction(const CGBlockInfo &blockInfo);
1757 llvm::Constant *GenerateObjCAtomicSetterCopyHelperFunction(
1758 const ObjCPropertyImplDecl *PID);
1759 llvm::Constant *GenerateObjCAtomicGetterCopyHelperFunction(
1760 const ObjCPropertyImplDecl *PID);
1761 llvm::Value *EmitBlockCopyAndAutorelease(llvm::Value *Block, QualType Ty);
1762
1763 void BuildBlockRelease(llvm::Value *DeclPtr, BlockFieldFlags flags,
1764 bool CanThrow);
1765
1766 class AutoVarEmission;
1767
1768 void emitByrefStructureInit(const AutoVarEmission &emission);
1769
1770 /// Enter a cleanup to destroy a __block variable. Note that this
1771 /// cleanup should be a no-op if the variable hasn't left the stack
1772 /// yet; if a cleanup is required for the variable itself, that needs
1773 /// to be done externally.
1774 ///
1775 /// \param Kind Cleanup kind.
1776 ///
1777 /// \param Addr When \p LoadBlockVarAddr is false, the address of the __block
1778 /// structure that will be passed to _Block_object_dispose. When
1779 /// \p LoadBlockVarAddr is true, the address of the field of the block
1780 /// structure that holds the address of the __block structure.
1781 ///
1782 /// \param Flags The flag that will be passed to _Block_object_dispose.
1783 ///
1784 /// \param LoadBlockVarAddr Indicates whether we need to emit a load from
1785 /// \p Addr to get the address of the __block structure.
1786 void enterByrefCleanup(CleanupKind Kind, Address Addr, BlockFieldFlags Flags,
1787 bool LoadBlockVarAddr, bool CanThrow);
1788
1789 void setBlockContextParameter(const ImplicitParamDecl *D, unsigned argNum,
1790 llvm::Value *ptr);
1791
1792 Address LoadBlockStruct();
1793 Address GetAddrOfBlockDecl(const VarDecl *var);
1794
1795 /// BuildBlockByrefAddress - Computes the location of the
1796 /// data in a variable which is declared as __block.
1797 Address emitBlockByrefAddress(Address baseAddr, const VarDecl *V,
1798 bool followForward = true);
1799 Address emitBlockByrefAddress(Address baseAddr,
1800 const BlockByrefInfo &info,
1801 bool followForward,
1802 const llvm::Twine &name);
1803
1804 const BlockByrefInfo &getBlockByrefInfo(const VarDecl *var);
1805
1806 QualType BuildFunctionArgList(GlobalDecl GD, FunctionArgList &Args);
1807
1808 void GenerateCode(GlobalDecl GD, llvm::Function *Fn,
1809 const CGFunctionInfo &FnInfo);
1810
1811 /// Annotate the function with an attribute that disables TSan checking at
1812 /// runtime.
1813 void markAsIgnoreThreadCheckingAtRuntime(llvm::Function *Fn);
1814
1815 /// Emit code for the start of a function.
1816 /// \param Loc The location to be associated with the function.
1817 /// \param StartLoc The location of the function body.
1818 void StartFunction(GlobalDecl GD,
1819 QualType RetTy,
1820 llvm::Function *Fn,
1821 const CGFunctionInfo &FnInfo,
1822 const FunctionArgList &Args,
1823 SourceLocation Loc = SourceLocation(),
1824 SourceLocation StartLoc = SourceLocation());
1825
1826 static bool IsConstructorDelegationValid(const CXXConstructorDecl *Ctor);
1827
1828 void EmitConstructorBody(FunctionArgList &Args);
1829 void EmitDestructorBody(FunctionArgList &Args);
1830 void emitImplicitAssignmentOperatorBody(FunctionArgList &Args);
1831 void EmitFunctionBody(const Stmt *Body);
1832 void EmitBlockWithFallThrough(llvm::BasicBlock *BB, const Stmt *S);
1833
1834 void EmitForwardingCallToLambda(const CXXMethodDecl *LambdaCallOperator,
1835 CallArgList &CallArgs);
1836 void EmitLambdaBlockInvokeBody();
1837 void EmitLambdaDelegatingInvokeBody(const CXXMethodDecl *MD);
1838 void EmitLambdaStaticInvokeBody(const CXXMethodDecl *MD);
1839 void EmitAsanPrologueOrEpilogue(bool Prologue);
1840
1841 /// Emit the unified return block, trying to avoid its emission when
1842 /// possible.
1843 /// \return The debug location of the user written return statement if the
1844 /// return block is is avoided.
1845 llvm::DebugLoc EmitReturnBlock();
1846
1847 /// FinishFunction - Complete IR generation of the current function. It is
1848 /// legal to call this function even if there is no current insertion point.
1849 void FinishFunction(SourceLocation EndLoc=SourceLocation());
1850
1851 void StartThunk(llvm::Function *Fn, GlobalDecl GD,
1852 const CGFunctionInfo &FnInfo, bool IsUnprototyped);
1853
1854 void EmitCallAndReturnForThunk(llvm::Constant *Callee, const ThunkInfo *Thunk,
1855 bool IsUnprototyped);
1856
1857 void FinishThunk();
1858
1859 /// Emit a musttail call for a thunk with a potentially adjusted this pointer.
1860 void EmitMustTailThunk(GlobalDecl GD, llvm::Value *AdjustedThisPtr,
1861 llvm::Value *Callee);
1862
1863 /// Generate a thunk for the given method.
1864 void generateThunk(llvm::Function *Fn, const CGFunctionInfo &FnInfo,
1865 GlobalDecl GD, const ThunkInfo &Thunk,
1866 bool IsUnprototyped);
1867
1868 llvm::Function *GenerateVarArgsThunk(llvm::Function *Fn,
1869 const CGFunctionInfo &FnInfo,
1870 GlobalDecl GD, const ThunkInfo &Thunk);
1871
1872 void EmitCtorPrologue(const CXXConstructorDecl *CD, CXXCtorType Type,
1873 FunctionArgList &Args);
1874
1875 void EmitInitializerForField(FieldDecl *Field, LValue LHS, Expr *Init);
1876
1877 /// Struct with all information about dynamic [sub]class needed to set vptr.
1878 struct VPtr {
1879 BaseSubobject Base;
1880 const CXXRecordDecl *NearestVBase;
1881 CharUnits OffsetFromNearestVBase;
1882 const CXXRecordDecl *VTableClass;
1883 };
1884
1885 /// Initialize the vtable pointer of the given subobject.
1886 void InitializeVTablePointer(const VPtr &vptr);
1887
1888 typedef llvm::SmallVector<VPtr, 4> VPtrsVector;
1889
1890 typedef llvm::SmallPtrSet<const CXXRecordDecl *, 4> VisitedVirtualBasesSetTy;
1891 VPtrsVector getVTablePointers(const CXXRecordDecl *VTableClass);
1892
1893 void getVTablePointers(BaseSubobject Base, const CXXRecordDecl *NearestVBase,
1894 CharUnits OffsetFromNearestVBase,
1895 bool BaseIsNonVirtualPrimaryBase,
1896 const CXXRecordDecl *VTableClass,
1897 VisitedVirtualBasesSetTy &VBases, VPtrsVector &vptrs);
1898
1899 void InitializeVTablePointers(const CXXRecordDecl *ClassDecl);
1900
1901 /// GetVTablePtr - Return the Value of the vtable pointer member pointed
1902 /// to by This.
1903 llvm::Value *GetVTablePtr(Address This, llvm::Type *VTableTy,
1904 const CXXRecordDecl *VTableClass);
1905
1906 enum CFITypeCheckKind {
1907 CFITCK_VCall,
1908 CFITCK_NVCall,
1909 CFITCK_DerivedCast,
1910 CFITCK_UnrelatedCast,
1911 CFITCK_ICall,
1912 CFITCK_NVMFCall,
1913 CFITCK_VMFCall,
1914 };
1915
1916 /// Derived is the presumed address of an object of type T after a
1917 /// cast. If T is a polymorphic class type, emit a check that the virtual
1918 /// table for Derived belongs to a class derived from T.
1919 void EmitVTablePtrCheckForCast(QualType T, llvm::Value *Derived,
1920 bool MayBeNull, CFITypeCheckKind TCK,
1921 SourceLocation Loc);
1922
1923 /// EmitVTablePtrCheckForCall - Virtual method MD is being called via VTable.
1924 /// If vptr CFI is enabled, emit a check that VTable is valid.
1925 void EmitVTablePtrCheckForCall(const CXXRecordDecl *RD, llvm::Value *VTable,
1926 CFITypeCheckKind TCK, SourceLocation Loc);
1927
1928 /// EmitVTablePtrCheck - Emit a check that VTable is a valid virtual table for
1929 /// RD using llvm.type.test.
1930 void EmitVTablePtrCheck(const CXXRecordDecl *RD, llvm::Value *VTable,
1931 CFITypeCheckKind TCK, SourceLocation Loc);
1932
1933 /// If whole-program virtual table optimization is enabled, emit an assumption
1934 /// that VTable is a member of RD's type identifier. Or, if vptr CFI is
1935 /// enabled, emit a check that VTable is a member of RD's type identifier.
1936 void EmitTypeMetadataCodeForVCall(const CXXRecordDecl *RD,
1937 llvm::Value *VTable, SourceLocation Loc);
1938
1939 /// Returns whether we should perform a type checked load when loading a
1940 /// virtual function for virtual calls to members of RD. This is generally
1941 /// true when both vcall CFI and whole-program-vtables are enabled.
1942 bool ShouldEmitVTableTypeCheckedLoad(const CXXRecordDecl *RD);
1943
1944 /// Emit a type checked load from the given vtable.
1945 llvm::Value *EmitVTableTypeCheckedLoad(const CXXRecordDecl *RD, llvm::Value *VTable,
1946 uint64_t VTableByteOffset);
1947
1948 /// EnterDtorCleanups - Enter the cleanups necessary to complete the
1949 /// given phase of destruction for a destructor. The end result
1950 /// should call destructors on members and base classes in reverse
1951 /// order of their construction.
1952 void EnterDtorCleanups(const CXXDestructorDecl *Dtor, CXXDtorType Type);
1953
1954 /// ShouldInstrumentFunction - Return true if the current function should be
1955 /// instrumented with __cyg_profile_func_* calls
1956 bool ShouldInstrumentFunction();
1957
1958 /// ShouldXRayInstrument - Return true if the current function should be
1959 /// instrumented with XRay nop sleds.
1960 bool ShouldXRayInstrumentFunction() const;
1961
1962 /// AlwaysEmitXRayCustomEvents - Return true if we must unconditionally emit
1963 /// XRay custom event handling calls.
1964 bool AlwaysEmitXRayCustomEvents() const;
1965
1966 /// AlwaysEmitXRayTypedEvents - Return true if clang must unconditionally emit
1967 /// XRay typed event handling calls.
1968 bool AlwaysEmitXRayTypedEvents() const;
1969
1970 /// Encode an address into a form suitable for use in a function prologue.
1971 llvm::Constant *EncodeAddrForUseInPrologue(llvm::Function *F,
1972 llvm::Constant *Addr);
1973
1974 /// Decode an address used in a function prologue, encoded by \c
1975 /// EncodeAddrForUseInPrologue.
1976 llvm::Value *DecodeAddrUsedInPrologue(llvm::Value *F,
1977 llvm::Value *EncodedAddr);
1978
1979 /// EmitFunctionProlog - Emit the target specific LLVM code to load the
1980 /// arguments for the given function. This is also responsible for naming the
1981 /// LLVM function arguments.
1982 void EmitFunctionProlog(const CGFunctionInfo &FI,
1983 llvm::Function *Fn,
1984 const FunctionArgList &Args);
1985
1986 /// EmitFunctionEpilog - Emit the target specific LLVM code to return the
1987 /// given temporary.
1988 void EmitFunctionEpilog(const CGFunctionInfo &FI, bool EmitRetDbgLoc,
1989 SourceLocation EndLoc);
1990
1991 /// Emit a test that checks if the return value \p RV is nonnull.
1992 void EmitReturnValueCheck(llvm::Value *RV);
1993
1994 /// EmitStartEHSpec - Emit the start of the exception spec.
1995 void EmitStartEHSpec(const Decl *D);
1996
1997 /// EmitEndEHSpec - Emit the end of the exception spec.
1998 void EmitEndEHSpec(const Decl *D);
1999
2000 /// getTerminateLandingPad - Return a landing pad that just calls terminate.
2001 llvm::BasicBlock *getTerminateLandingPad();
2002
2003 /// getTerminateLandingPad - Return a cleanup funclet that just calls
2004 /// terminate.
2005 llvm::BasicBlock *getTerminateFunclet();
2006
2007 /// getTerminateHandler - Return a handler (not a landing pad, just
2008 /// a catch handler) that just calls terminate. This is used when
2009 /// a terminate scope encloses a try.
2010 llvm::BasicBlock *getTerminateHandler();
2011
2012 llvm::Type *ConvertTypeForMem(QualType T);
2013 llvm::Type *ConvertType(QualType T);
2014 llvm::Type *ConvertType(const TypeDecl *T) {
2015 return ConvertType(getContext().getTypeDeclType(T));
2016 }
2017
2018 /// LoadObjCSelf - Load the value of self. This function is only valid while
2019 /// generating code for an Objective-C method.
2020 llvm::Value *LoadObjCSelf();
2021
2022 /// TypeOfSelfObject - Return type of object that this self represents.
2023 QualType TypeOfSelfObject();
2024
2025 /// getEvaluationKind - Return the TypeEvaluationKind of QualType \c T.
2026 static TypeEvaluationKind getEvaluationKind(QualType T);
2027
2028 static bool hasScalarEvaluationKind(QualType T) {
2029 return getEvaluationKind(T) == TEK_Scalar;
2030 }
2031
2032 static bool hasAggregateEvaluationKind(QualType T) {
2033 return getEvaluationKind(T) == TEK_Aggregate;
2034 }
2035
2036 /// createBasicBlock - Create an LLVM basic block.
2037 llvm::BasicBlock *createBasicBlock(const Twine &name = "",
2038 llvm::Function *parent = nullptr,
2039 llvm::BasicBlock *before = nullptr) {
2040 return llvm::BasicBlock::Create(getLLVMContext(), name, parent, before);
2041 }
2042
2043 /// getBasicBlockForLabel - Return the LLVM basicblock that the specified
2044 /// label maps to.
2045 JumpDest getJumpDestForLabel(const LabelDecl *S);
2046
2047 /// SimplifyForwardingBlocks - If the given basic block is only a branch to
2048 /// another basic block, simplify it. This assumes that no other code could
2049 /// potentially reference the basic block.
2050 void SimplifyForwardingBlocks(llvm::BasicBlock *BB);
2051
2052 /// EmitBlock - Emit the given block \arg BB and set it as the insert point,
2053 /// adding a fall-through branch from the current insert block if
2054 /// necessary. It is legal to call this function even if there is no current
2055 /// insertion point.
2056 ///
2057 /// IsFinished - If true, indicates that the caller has finished emitting
2058 /// branches to the given block and does not expect to emit code into it. This
2059 /// means the block can be ignored if it is unreachable.
2060 void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false);
2061
2062 /// EmitBlockAfterUses - Emit the given block somewhere hopefully
2063 /// near its uses, and leave the insertion point in it.
2064 void EmitBlockAfterUses(llvm::BasicBlock *BB);
2065
2066 /// EmitBranch - Emit a branch to the specified basic block from the current
2067 /// insert block, taking care to avoid creation of branches from dummy
2068 /// blocks. It is legal to call this function even if there is no current
2069 /// insertion point.
2070 ///
2071 /// This function clears the current insertion point. The caller should follow
2072 /// calls to this function with calls to Emit*Block prior to generation new
2073 /// code.
2074 void EmitBranch(llvm::BasicBlock *Block);
2075
2076 /// HaveInsertPoint - True if an insertion point is defined. If not, this
2077 /// indicates that the current code being emitted is unreachable.
2078 bool HaveInsertPoint() const {
2079 return Builder.GetInsertBlock() != nullptr;
2080 }
2081
2082 /// EnsureInsertPoint - Ensure that an insertion point is defined so that
2083 /// emitted IR has a place to go. Note that by definition, if this function
2084 /// creates a block then that block is unreachable; callers may do better to
2085 /// detect when no insertion point is defined and simply skip IR generation.
2086 void EnsureInsertPoint() {
2087 if (!HaveInsertPoint())
2088 EmitBlock(createBasicBlock());
2089 }
2090
2091 /// ErrorUnsupported - Print out an error that codegen doesn't support the
2092 /// specified stmt yet.
2093 void ErrorUnsupported(const Stmt *S, const char *Type);
2094
2095 //===--------------------------------------------------------------------===//
2096 // Helpers
2097 //===--------------------------------------------------------------------===//
2098
2099 LValue MakeAddrLValue(Address Addr, QualType T,
2100 AlignmentSource Source = AlignmentSource::Type) {
2101 return LValue::MakeAddr(Addr, T, getContext(), LValueBaseInfo(Source),
2102 CGM.getTBAAAccessInfo(T));
2103 }
2104
2105 LValue MakeAddrLValue(Address Addr, QualType T, LValueBaseInfo BaseInfo,
2106 TBAAAccessInfo TBAAInfo) {
2107 return LValue::MakeAddr(Addr, T, getContext(), BaseInfo, TBAAInfo);
2108 }
2109
2110 LValue MakeAddrLValue(llvm::Value *V, QualType T, CharUnits Alignment,
2111 AlignmentSource Source = AlignmentSource::Type) {
2112 return LValue::MakeAddr(Address(V, Alignment), T, getContext(),
2113 LValueBaseInfo(Source), CGM.getTBAAAccessInfo(T));
2114 }
2115
2116 LValue MakeAddrLValue(llvm::Value *V, QualType T, CharUnits Alignment,
2117 LValueBaseInfo BaseInfo, TBAAAccessInfo TBAAInfo) {
2118 return LValue::MakeAddr(Address(V, Alignment), T, getContext(),
2119 BaseInfo, TBAAInfo);
2120 }
2121
2122 LValue MakeNaturalAlignPointeeAddrLValue(llvm::Value *V, QualType T);
2123 LValue MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T);
2124 CharUnits getNaturalTypeAlignment(QualType T,
2125 LValueBaseInfo *BaseInfo = nullptr,
2126 TBAAAccessInfo *TBAAInfo = nullptr,
2127 bool forPointeeType = false);
2128 CharUnits getNaturalPointeeTypeAlignment(QualType T,
2129 LValueBaseInfo *BaseInfo = nullptr,
2130 TBAAAccessInfo *TBAAInfo = nullptr);
2131
2132 Address EmitLoadOfReference(LValue RefLVal,
2133 LValueBaseInfo *PointeeBaseInfo = nullptr,
2134 TBAAAccessInfo *PointeeTBAAInfo = nullptr);
2135 LValue EmitLoadOfReferenceLValue(LValue RefLVal);
2136 LValue EmitLoadOfReferenceLValue(Address RefAddr, QualType RefTy,
2137 AlignmentSource Source =
2138 AlignmentSource::Type) {
2139 LValue RefLVal = MakeAddrLValue(RefAddr, RefTy, LValueBaseInfo(Source),
2140 CGM.getTBAAAccessInfo(RefTy));
2141 return EmitLoadOfReferenceLValue(RefLVal);
2142 }
2143
2144 Address EmitLoadOfPointer(Address Ptr, const PointerType *PtrTy,
2145 LValueBaseInfo *BaseInfo = nullptr,
2146 TBAAAccessInfo *TBAAInfo = nullptr);
2147 LValue EmitLoadOfPointerLValue(Address Ptr, const PointerType *PtrTy);
2148
2149 /// CreateTempAlloca - This creates an alloca and inserts it into the entry
2150 /// block if \p ArraySize is nullptr, otherwise inserts it at the current
2151 /// insertion point of the builder. The caller is responsible for setting an
2152 /// appropriate alignment on
2153 /// the alloca.
2154 ///
2155 /// \p ArraySize is the number of array elements to be allocated if it
2156 /// is not nullptr.
2157 ///
2158 /// LangAS::Default is the address space of pointers to local variables and
2159 /// temporaries, as exposed in the source language. In certain
2160 /// configurations, this is not the same as the alloca address space, and a
2161 /// cast is needed to lift the pointer from the alloca AS into
2162 /// LangAS::Default. This can happen when the target uses a restricted
2163 /// address space for the stack but the source language requires
2164 /// LangAS::Default to be a generic address space. The latter condition is
2165 /// common for most programming languages; OpenCL is an exception in that
2166 /// LangAS::Default is the private address space, which naturally maps
2167 /// to the stack.
2168 ///
2169 /// Because the address of a temporary is often exposed to the program in
2170 /// various ways, this function will perform the cast. The original alloca
2171 /// instruction is returned through \p Alloca if it is not nullptr.
2172 ///
2173 /// The cast is not performaed in CreateTempAllocaWithoutCast. This is
2174 /// more efficient if the caller knows that the address will not be exposed.
2175 llvm::AllocaInst *CreateTempAlloca(llvm::Type *Ty, const Twine &Name = "tmp",
2176 llvm::Value *ArraySize = nullptr);
2177 Address CreateTempAlloca(llvm::Type *Ty, CharUnits align,
2178 const Twine &Name = "tmp",
2179 llvm::Value *ArraySize = nullptr,
2180 Address *Alloca = nullptr);
2181 Address CreateTempAllocaWithoutCast(llvm::Type *Ty, CharUnits align,
2182 const Twine &Name = "tmp",
2183 llvm::Value *ArraySize = nullptr);
2184
2185 /// CreateDefaultAlignedTempAlloca - This creates an alloca with the
2186 /// default ABI alignment of the given LLVM type.
2187 ///
2188 /// IMPORTANT NOTE: This is *not* generally the right alignment for
2189 /// any given AST type that happens to have been lowered to the
2190 /// given IR type. This should only ever be used for function-local,
2191 /// IR-driven manipulations like saving and restoring a value. Do
2192 /// not hand this address off to arbitrary IRGen routines, and especially
2193 /// do not pass it as an argument to a function that might expect a
2194 /// properly ABI-aligned value.
2195 Address CreateDefaultAlignTempAlloca(llvm::Type *Ty,
2196 const Twine &Name = "tmp");
2197
2198 /// InitTempAlloca - Provide an initial value for the given alloca which
2199 /// will be observable at all locations in the function.
2200 ///
2201 /// The address should be something that was returned from one of
2202 /// the CreateTempAlloca or CreateMemTemp routines, and the
2203 /// initializer must be valid in the entry block (i.e. it must
2204 /// either be a constant or an argument value).
2205 void InitTempAlloca(Address Alloca, llvm::Value *Value);
2206
2207 /// CreateIRTemp - Create a temporary IR object of the given type, with
2208 /// appropriate alignment. This routine should only be used when an temporary
2209 /// value needs to be stored into an alloca (for example, to avoid explicit
2210 /// PHI construction), but the type is the IR type, not the type appropriate
2211 /// for storing in memory.
2212 ///
2213 /// That is, this is exactly equivalent to CreateMemTemp, but calling
2214 /// ConvertType instead of ConvertTypeForMem.
2215 Address CreateIRTemp(QualType T, const Twine &Name = "tmp");
2216
2217 /// CreateMemTemp - Create a temporary memory object of the given type, with
2218 /// appropriate alignmen and cast it to the default address space. Returns
2219 /// the original alloca instruction by \p Alloca if it is not nullptr.
2220 Address CreateMemTemp(QualType T, const Twine &Name = "tmp",
2221 Address *Alloca = nullptr);
2222 Address CreateMemTemp(QualType T, CharUnits Align, const Twine &Name = "tmp",
2223 Address *Alloca = nullptr);
2224
2225 /// CreateMemTemp - Create a temporary memory object of the given type, with
2226 /// appropriate alignmen without casting it to the default address space.
2227 Address CreateMemTempWithoutCast(QualType T, const Twine &Name = "tmp");
2228 Address CreateMemTempWithoutCast(QualType T, CharUnits Align,
2229 const Twine &Name = "tmp");
2230
2231 /// CreateAggTemp - Create a temporary memory object for the given
2232 /// aggregate type.
2233 AggValueSlot CreateAggTemp(QualType T, const Twine &Name = "tmp") {
2234 return AggValueSlot::forAddr(CreateMemTemp(T, Name),
2235 T.getQualifiers(),
2236 AggValueSlot::IsNotDestructed,
2237 AggValueSlot::DoesNotNeedGCBarriers,
2238 AggValueSlot::IsNotAliased,
2239 AggValueSlot::DoesNotOverlap);
2240 }
2241
2242 /// Emit a cast to void* in the appropriate address space.
2243 llvm::Value *EmitCastToVoidPtr(llvm::Value *value);
2244
2245 /// EvaluateExprAsBool - Perform the usual unary conversions on the specified
2246 /// expression and compare the result against zero, returning an Int1Ty value.
2247 llvm::Value *EvaluateExprAsBool(const Expr *E);
2248
2249 /// EmitIgnoredExpr - Emit an expression in a context which ignores the result.
2250 void EmitIgnoredExpr(const Expr *E);
2251
2252 /// EmitAnyExpr - Emit code to compute the specified expression which can have
2253 /// any type. The result is returned as an RValue struct. If this is an
2254 /// aggregate expression, the aggloc/agglocvolatile arguments indicate where
2255 /// the result should be returned.
2256 ///
2257 /// \param ignoreResult True if the resulting value isn't used.
2258 RValue EmitAnyExpr(const Expr *E,
2259 AggValueSlot aggSlot = AggValueSlot::ignored(),
2260 bool ignoreResult = false);
2261
2262 // EmitVAListRef - Emit a "reference" to a va_list; this is either the address
2263 // or the value of the expression, depending on how va_list is defined.
2264 Address EmitVAListRef(const Expr *E);
2265
2266 /// Emit a "reference" to a __builtin_ms_va_list; this is
2267 /// always the value of the expression, because a __builtin_ms_va_list is a
2268 /// pointer to a char.
2269 Address EmitMSVAListRef(const Expr *E);
2270
2271 /// EmitAnyExprToTemp - Similarly to EmitAnyExpr(), however, the result will
2272 /// always be accessible even if no aggregate location is provided.
2273 RValue EmitAnyExprToTemp(const Expr *E);
2274
2275 /// EmitAnyExprToMem - Emits the code necessary to evaluate an
2276 /// arbitrary expression into the given memory location.
2277 void EmitAnyExprToMem(const Expr *E, Address Location,
2278 Qualifiers Quals, bool IsInitializer);
2279
2280 void EmitAnyExprToExn(const Expr *E, Address Addr);
2281
2282 /// EmitExprAsInit - Emits the code necessary to initialize a
2283 /// location in memory with the given initializer.
2284 void EmitExprAsInit(const Expr *init, const ValueDecl *D, LValue lvalue,
2285 bool capturedByInit);
2286
2287 /// hasVolatileMember - returns true if aggregate type has a volatile
2288 /// member.
2289 bool hasVolatileMember(QualType T) {
2290 if (const RecordType *RT = T->getAs<RecordType>()) {
2291 const RecordDecl *RD = cast<RecordDecl>(RT->getDecl());
2292 return RD->hasVolatileMember();
2293 }
2294 return false;
2295 }
2296
2297 /// Determine whether a return value slot may overlap some other object.
2298 AggValueSlot::Overlap_t overlapForReturnValue() {
2299 // FIXME: Assuming no overlap here breaks guaranteed copy elision for base
2300 // class subobjects. These cases may need to be revisited depending on the
2301 // resolution of the relevant core issue.
2302 return AggValueSlot::DoesNotOverlap;
2303 }
2304
2305 /// Determine whether a field initialization may overlap some other object.
2306 AggValueSlot::Overlap_t overlapForFieldInit(const FieldDecl *FD) {
2307 // FIXME: These cases can result in overlap as a result of P0840R0's
2308 // [[no_unique_address]] attribute. We can still infer NoOverlap in the
2309 // presence of that attribute if the field is within the nvsize of its
2310 // containing class, because non-virtual subobjects are initialized in
2311 // address order.
2312 return AggValueSlot::DoesNotOverlap;
2313 }
2314
2315 /// Determine whether a base class initialization may overlap some other
2316 /// object.
2317 AggValueSlot::Overlap_t overlapForBaseInit(const CXXRecordDecl *RD,
2318 const CXXRecordDecl *BaseRD,
2319 bool IsVirtual);
2320
2321 /// Emit an aggregate assignment.
2322 void EmitAggregateAssign(LValue Dest, LValue Src, QualType EltTy) {
2323 bool IsVolatile = hasVolatileMember(EltTy);
2324 EmitAggregateCopy(Dest, Src, EltTy, AggValueSlot::MayOverlap, IsVolatile);
2325 }
2326
2327 void EmitAggregateCopyCtor(LValue Dest, LValue Src,
2328 AggValueSlot::Overlap_t MayOverlap) {
2329 EmitAggregateCopy(Dest, Src, Src.getType(), MayOverlap);
2330 }
2331
2332 /// EmitAggregateCopy - Emit an aggregate copy.
2333 ///
2334 /// \param isVolatile \c true iff either the source or the destination is
2335 /// volatile.
2336 /// \param MayOverlap Whether the tail padding of the destination might be
2337 /// occupied by some other object. More efficient code can often be
2338 /// generated if not.
2339 void EmitAggregateCopy(LValue Dest, LValue Src, QualType EltTy,
2340 AggValueSlot::Overlap_t MayOverlap,
2341 bool isVolatile = false);
2342
2343 /// GetAddrOfLocalVar - Return the address of a local variable.
2344 Address GetAddrOfLocalVar(const VarDecl *VD) {
2345 auto it = LocalDeclMap.find(VD);
2346 assert(it != LocalDeclMap.end() &&
2347 "Invalid argument to GetAddrOfLocalVar(), no decl!");
2348 return it->second;
2349 }
2350
2351 /// Given an opaque value expression, return its LValue mapping if it exists,
2352 /// otherwise create one.
2353 LValue getOrCreateOpaqueLValueMapping(const OpaqueValueExpr *e);
2354
2355 /// Given an opaque value expression, return its RValue mapping if it exists,
2356 /// otherwise create one.
2357 RValue getOrCreateOpaqueRValueMapping(const OpaqueValueExpr *e);
2358
2359 /// Get the index of the current ArrayInitLoopExpr, if any.
2360 llvm::Value *getArrayInitIndex() { return ArrayInitIndex; }
2361
2362 /// getAccessedFieldNo - Given an encoded value and a result number, return
2363 /// the input field number being accessed.
2364 static unsigned getAccessedFieldNo(unsigned Idx, const llvm::Constant *Elts);
2365
2366 llvm::BlockAddress *GetAddrOfLabel(const LabelDecl *L);
2367 llvm::BasicBlock *GetIndirectGotoBlock();
2368
2369 /// Check if \p E is a C++ "this" pointer wrapped in value-preserving casts.
2370 static bool IsWrappedCXXThis(const Expr *E);
2371
2372 /// EmitNullInitialization - Generate code to set a value of the given type to
2373 /// null, If the type contains data member pointers, they will be initialized
2374 /// to -1 in accordance with the Itanium C++ ABI.
2375 void EmitNullInitialization(Address DestPtr, QualType Ty);
2376
2377 /// Emits a call to an LLVM variable-argument intrinsic, either
2378 /// \c llvm.va_start or \c llvm.va_end.
2379 /// \param ArgValue A reference to the \c va_list as emitted by either
2380 /// \c EmitVAListRef or \c EmitMSVAListRef.
2381 /// \param IsStart If \c true, emits a call to \c llvm.va_start; otherwise,
2382 /// calls \c llvm.va_end.
2383 llvm::Value *EmitVAStartEnd(llvm::Value *ArgValue, bool IsStart);
2384
2385 /// Generate code to get an argument from the passed in pointer
2386 /// and update it accordingly.
2387 /// \param VE The \c VAArgExpr for which to generate code.
2388 /// \param VAListAddr Receives a reference to the \c va_list as emitted by
2389 /// either \c EmitVAListRef or \c EmitMSVAListRef.
2390 /// \returns A pointer to the argument.
2391 // FIXME: We should be able to get rid of this method and use the va_arg
2392 // instruction in LLVM instead once it works well enough.
2393 Address EmitVAArg(VAArgExpr *VE, Address &VAListAddr);
2394
2395 /// emitArrayLength - Compute the length of an array, even if it's a
2396 /// VLA, and drill down to the base element type.
2397 llvm::Value *emitArrayLength(const ArrayType *arrayType,
2398 QualType &baseType,
2399 Address &addr);
2400
2401 /// EmitVLASize - Capture all the sizes for the VLA expressions in
2402 /// the given variably-modified type and store them in the VLASizeMap.
2403 ///
2404 /// This function can be called with a null (unreachable) insert point.
2405 void EmitVariablyModifiedType(QualType Ty);
2406
2407 struct VlaSizePair {
2408 llvm::Value *NumElts;
2409 QualType Type;
2410
2411 VlaSizePair(llvm::Value *NE, QualType T) : NumElts(NE), Type(T) {}
2412 };
2413
2414 /// Return the number of elements for a single dimension
2415 /// for the given array type.
2416 VlaSizePair getVLAElements1D(const VariableArrayType *vla);
2417 VlaSizePair getVLAElements1D(QualType vla);
2418
2419 /// Returns an LLVM value that corresponds to the size,
2420 /// in non-variably-sized elements, of a variable length array type,
2421 /// plus that largest non-variably-sized element type. Assumes that
2422 /// the type has already been emitted with EmitVariablyModifiedType.
2423 VlaSizePair getVLASize(const VariableArrayType *vla);
2424 VlaSizePair getVLASize(QualType vla);
2425
2426 /// LoadCXXThis - Load the value of 'this'. This function is only valid while
2427 /// generating code for an C++ member function.
2428 llvm::Value *LoadCXXThis() {
2429 assert(CXXThisValue && "no 'this' value for this function");
2430 return CXXThisValue;
2431 }
2432 Address LoadCXXThisAddress();
2433
2434 /// LoadCXXVTT - Load the VTT parameter to base constructors/destructors have
2435 /// virtual bases.
2436 // FIXME: Every place that calls LoadCXXVTT is something
2437 // that needs to be abstracted properly.
2438 llvm::Value *LoadCXXVTT() {
2439 assert(CXXStructorImplicitParamValue && "no VTT value for this function");
2440 return CXXStructorImplicitParamValue;
2441 }
2442
2443 /// GetAddressOfBaseOfCompleteClass - Convert the given pointer to a
2444 /// complete class to the given direct base.
2445 Address
2446 GetAddressOfDirectBaseInCompleteClass(Address Value,
2447 const CXXRecordDecl *Derived,
2448 const CXXRecordDecl *Base,
2449 bool BaseIsVirtual);
2450
2451 static bool ShouldNullCheckClassCastValue(const CastExpr *Cast);
2452
2453 /// GetAddressOfBaseClass - This function will add the necessary delta to the
2454 /// load of 'this' and returns address of the base class.
2455 Address GetAddressOfBaseClass(Address Value,
2456 const CXXRecordDecl *Derived,
2457 CastExpr::path_const_iterator PathBegin,
2458 CastExpr::path_const_iterator PathEnd,
2459 bool NullCheckValue, SourceLocation Loc);
2460
2461 Address GetAddressOfDerivedClass(Address Value,
2462 const CXXRecordDecl *Derived,
2463 CastExpr::path_const_iterator PathBegin,
2464 CastExpr::path_const_iterator PathEnd,
2465 bool NullCheckValue);
2466
2467 /// GetVTTParameter - Return the VTT parameter that should be passed to a
2468 /// base constructor/destructor with virtual bases.
2469 /// FIXME: VTTs are Itanium ABI-specific, so the definition should move
2470 /// to ItaniumCXXABI.cpp together with all the references to VTT.
2471 llvm::Value *GetVTTParameter(GlobalDecl GD, bool ForVirtualBase,
2472 bool Delegating);
2473
2474 void EmitDelegateCXXConstructorCall(const CXXConstructorDecl *Ctor,
2475 CXXCtorType CtorType,
2476 const FunctionArgList &Args,
2477 SourceLocation Loc);
2478 // It's important not to confuse this and the previous function. Delegating
2479 // constructors are the C++0x feature. The constructor delegate optimization
2480 // is used to reduce duplication in the base and complete consturctors where
2481 // they are substantially the same.
2482 void EmitDelegatingCXXConstructorCall(const CXXConstructorDecl *Ctor,
2483 const FunctionArgList &Args);
2484
2485 /// Emit a call to an inheriting constructor (that is, one that invokes a
2486 /// constructor inherited from a base class) by inlining its definition. This
2487 /// is necessary if the ABI does not support forwarding the arguments to the
2488 /// base class constructor (because they're variadic or similar).
2489 void EmitInlinedInheritingCXXConstructorCall(const CXXConstructorDecl *Ctor,
2490 CXXCtorType CtorType,
2491 bool ForVirtualBase,
2492 bool Delegating,
2493 CallArgList &Args);
2494
2495 /// Emit a call to a constructor inherited from a base class, passing the
2496 /// current constructor's arguments along unmodified (without even making
2497 /// a copy).
2498 void EmitInheritedCXXConstructorCall(const CXXConstructorDecl *D,
2499 bool ForVirtualBase, Address This,
2500 bool InheritedFromVBase,
2501 const CXXInheritedCtorInitExpr *E);
2502
2503 void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type,
2504 bool ForVirtualBase, bool Delegating,
2505 Address This, const CXXConstructExpr *E,
2506 AggValueSlot::Overlap_t Overlap,
2507 bool NewPointerIsChecked);
2508
2509 void EmitCXXConstructorCall(const CXXConstructorDecl *D, CXXCtorType Type,
2510 bool ForVirtualBase, bool Delegating,
2511 Address This, CallArgList &Args,
2512 AggValueSlot::Overlap_t Overlap,
2513 SourceLocation Loc,
2514 bool NewPointerIsChecked);
2515
2516 /// Emit assumption load for all bases. Requires to be be called only on
2517 /// most-derived class and not under construction of the object.
2518 void EmitVTableAssumptionLoads(const CXXRecordDecl *ClassDecl, Address This);
2519
2520 /// Emit assumption that vptr load == global vtable.
2521 void EmitVTableAssumptionLoad(const VPtr &vptr, Address This);
2522
2523 void EmitSynthesizedCXXCopyCtorCall(const CXXConstructorDecl *D,
2524 Address This, Address Src,
2525 const CXXConstructExpr *E);
2526
2527 void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D,
2528 const ArrayType *ArrayTy,
2529 Address ArrayPtr,
2530 const CXXConstructExpr *E,
2531 bool NewPointerIsChecked,
2532 bool ZeroInitialization = false);
2533
2534 void EmitCXXAggrConstructorCall(const CXXConstructorDecl *D,
2535 llvm::Value *NumElements,
2536 Address ArrayPtr,
2537 const CXXConstructExpr *E,
2538 bool NewPointerIsChecked,
2539 bool ZeroInitialization = false);
2540
2541 static Destroyer destroyCXXObject;
2542
2543 void EmitCXXDestructorCall(const CXXDestructorDecl *D, CXXDtorType Type,
2544 bool ForVirtualBase, bool Delegating,
2545 Address This);
2546
2547 void EmitNewArrayInitializer(const CXXNewExpr *E, QualType elementType,
2548 llvm::Type *ElementTy, Address NewPtr,
2549 llvm::Value *NumElements,
2550 llvm::Value *AllocSizeWithoutCookie);
2551
2552 void EmitCXXTemporary(const CXXTemporary *Temporary, QualType TempType,
2553 Address Ptr);
2554
2555 llvm::Value *EmitLifetimeStart(uint64_t Size, llvm::Value *Addr);
2556 void EmitLifetimeEnd(llvm::Value *Size, llvm::Value *Addr);
2557
2558 llvm::Value *EmitCXXNewExpr(const CXXNewExpr *E);
2559 void EmitCXXDeleteExpr(const CXXDeleteExpr *E);
2560
2561 void EmitDeleteCall(const FunctionDecl *DeleteFD, llvm::Value *Ptr,
2562 QualType DeleteTy, llvm::Value *NumElements = nullptr,
2563 CharUnits CookieSize = CharUnits());
2564
2565 RValue EmitBuiltinNewDeleteCall(const FunctionProtoType *Type,
2566 const CallExpr *TheCallExpr, bool IsDelete);
2567
2568 llvm::Value *EmitCXXTypeidExpr(const CXXTypeidExpr *E);
2569 llvm::Value *EmitDynamicCast(Address V, const CXXDynamicCastExpr *DCE);
2570 Address EmitCXXUuidofExpr(const CXXUuidofExpr *E);
2571
2572 /// Situations in which we might emit a check for the suitability of a
2573 /// pointer or glvalue.
2574 enum TypeCheckKind {
2575 /// Checking the operand of a load. Must be suitably sized and aligned.
2576 TCK_Load,
2577 /// Checking the destination of a store. Must be suitably sized and aligned.
2578 TCK_Store,
2579 /// Checking the bound value in a reference binding. Must be suitably sized
2580 /// and aligned, but is not required to refer to an object (until the
2581 /// reference is used), per core issue 453.
2582 TCK_ReferenceBinding,
2583 /// Checking the object expression in a non-static data member access. Must
2584 /// be an object within its lifetime.
2585 TCK_MemberAccess,
2586 /// Checking the 'this' pointer for a call to a non-static member function.
2587 /// Must be an object within its lifetime.
2588 TCK_MemberCall,
2589 /// Checking the 'this' pointer for a constructor call.
2590 TCK_ConstructorCall,
2591 /// Checking the operand of a static_cast to a derived pointer type. Must be
2592 /// null or an object within its lifetime.
2593 TCK_DowncastPointer,
2594 /// Checking the operand of a static_cast to a derived reference type. Must
2595 /// be an object within its lifetime.
2596 TCK_DowncastReference,
2597 /// Checking the operand of a cast to a base object. Must be suitably sized
2598 /// and aligned.
2599 TCK_Upcast,
2600 /// Checking the operand of a cast to a virtual base object. Must be an
2601 /// object within its lifetime.
2602 TCK_UpcastToVirtualBase,
2603 /// Checking the value assigned to a _Nonnull pointer. Must not be null.
2604 TCK_NonnullAssign,
2605 /// Checking the operand of a dynamic_cast or a typeid expression. Must be
2606 /// null or an object within its lifetime.
2607 TCK_DynamicOperation
2608 };
2609
2610 /// Determine whether the pointer type check \p TCK permits null pointers.
2611 static bool isNullPointerAllowed(TypeCheckKind TCK);
2612
2613 /// Determine whether the pointer type check \p TCK requires a vptr check.
2614 static bool isVptrCheckRequired(TypeCheckKind TCK, QualType Ty);
2615
2616 /// Whether any type-checking sanitizers are enabled. If \c false,
2617 /// calls to EmitTypeCheck can be skipped.
2618 bool sanitizePerformTypeCheck() const;
2619
2620 /// Emit a check that \p V is the address of storage of the
2621 /// appropriate size and alignment for an object of type \p Type.
2622 void EmitTypeCheck(TypeCheckKind TCK, SourceLocation Loc, llvm::Value *V,
2623 QualType Type, CharUnits Alignment = CharUnits::Zero(),
2624 SanitizerSet SkippedChecks = SanitizerSet());
2625
2626 /// Emit a check that \p Base points into an array object, which
2627 /// we can access at index \p Index. \p Accessed should be \c false if we
2628 /// this expression is used as an lvalue, for instance in "&Arr[Idx]".
2629 void EmitBoundsCheck(const Expr *E, const Expr *Base, llvm::Value *Index,
2630 QualType IndexType, bool Accessed);
2631
2632 llvm::Value *EmitScalarPrePostIncDec(const UnaryOperator *E, LValue LV,
2633 bool isInc, bool isPre);
2634 ComplexPairTy EmitComplexPrePostIncDec(const UnaryOperator *E, LValue LV,
2635 bool isInc, bool isPre);
2636
2637 /// Converts Location to a DebugLoc, if debug information is enabled.
2638 llvm::DebugLoc SourceLocToDebugLoc(SourceLocation Location);
2639
2640
2641 //===--------------------------------------------------------------------===//
2642 // Declaration Emission
2643 //===--------------------------------------------------------------------===//
2644
2645 /// EmitDecl - Emit a declaration.
2646 ///
2647 /// This function can be called with a null (unreachable) insert point.
2648 void EmitDecl(const Decl &D);
2649
2650 /// EmitVarDecl - Emit a local variable declaration.
2651 ///
2652 /// This function can be called with a null (unreachable) insert point.
2653 void EmitVarDecl(const VarDecl &D);
2654
2655 void EmitScalarInit(const Expr *init, const ValueDecl *D, LValue lvalue,
2656 bool capturedByInit);
2657
2658 typedef void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D,
2659 llvm::Value *Address);
2660
2661 /// Determine whether the given initializer is trivial in the sense
2662 /// that it requires no code to be generated.
2663 bool isTrivialInitializer(const Expr *Init);
2664
2665 /// EmitAutoVarDecl - Emit an auto variable declaration.
2666 ///
2667 /// This function can be called with a null (unreachable) insert point.
2668 void EmitAutoVarDecl(const VarDecl &D);
2669
2670 class AutoVarEmission {
2671 friend class CodeGenFunction;
2672
2673 const VarDecl *Variable;
2674
2675 /// The address of the alloca for languages with explicit address space
2676 /// (e.g. OpenCL) or alloca casted to generic pointer for address space
2677 /// agnostic languages (e.g. C++). Invalid if the variable was emitted
2678 /// as a global constant.
2679 Address Addr;
2680
2681 llvm::Value *NRVOFlag;
2682
2683 /// True if the variable is a __block variable that is captured by an
2684 /// escaping block.
2685 bool IsEscapingByRef;
2686
2687 /// True if the variable is of aggregate type and has a constant
2688 /// initializer.
2689 bool IsConstantAggregate;
2690
2691 /// Non-null if we should use lifetime annotations.
2692 llvm::Value *SizeForLifetimeMarkers;
2693
2694 /// Address with original alloca instruction. Invalid if the variable was
2695 /// emitted as a global constant.
2696 Address AllocaAddr;
2697
2698 struct Invalid {};
2699 AutoVarEmission(Invalid)
2700 : Variable(nullptr), Addr(Address::invalid()),
2701 AllocaAddr(Address::invalid()) {}
2702
2703 AutoVarEmission(const VarDecl &variable)
2704 : Variable(&variable), Addr(Address::invalid()), NRVOFlag(nullptr),
2705 IsEscapingByRef(false), IsConstantAggregate(false),
2706 SizeForLifetimeMarkers(nullptr), AllocaAddr(Address::invalid()) {}
2707
2708 bool wasEmittedAsGlobal() const { return !Addr.isValid(); }
2709
2710 public:
2711 static AutoVarEmission invalid() { return AutoVarEmission(Invalid()); }
2712
2713 bool useLifetimeMarkers() const {
2714 return SizeForLifetimeMarkers != nullptr;
2715 }
2716 llvm::Value *getSizeForLifetimeMarkers() const {
2717 assert(useLifetimeMarkers());
2718 return SizeForLifetimeMarkers;
2719 }
2720
2721 /// Returns the raw, allocated address, which is not necessarily
2722 /// the address of the object itself. It is casted to default
2723 /// address space for address space agnostic languages.
2724 Address getAllocatedAddress() const {
2725 return Addr;
2726 }
2727
2728 /// Returns the address for the original alloca instruction.
2729 Address getOriginalAllocatedAddress() const { return AllocaAddr; }
2730
2731 /// Returns the address of the object within this declaration.
2732 /// Note that this does not chase the forwarding pointer for
2733 /// __block decls.
2734 Address getObjectAddress(CodeGenFunction &CGF) const {
2735 if (!IsEscapingByRef) return Addr;
2736
2737 return CGF.emitBlockByrefAddress(Addr, Variable, /*forward*/ false);
2738 }
2739 };
2740 AutoVarEmission EmitAutoVarAlloca(const VarDecl &var);
2741 void EmitAutoVarInit(const AutoVarEmission &emission);
2742 void EmitAutoVarCleanups(const AutoVarEmission &emission);
2743 void emitAutoVarTypeCleanup(const AutoVarEmission &emission,
2744 QualType::DestructionKind dtorKind);
2745
2746 /// Emits the alloca and debug information for the size expressions for each
2747 /// dimension of an array. It registers the association of its (1-dimensional)
2748 /// QualTypes and size expression's debug node, so that CGDebugInfo can
2749 /// reference this node when creating the DISubrange object to describe the
2750 /// array types.
2751 void EmitAndRegisterVariableArrayDimensions(CGDebugInfo *DI,
2752 const VarDecl &D,
2753 bool EmitDebugInfo);
2754
2755 void EmitStaticVarDecl(const VarDecl &D,
2756 llvm::GlobalValue::LinkageTypes Linkage);
2757
2758 class ParamValue {
2759 llvm::Value *Value;
2760 unsigned Alignment;
2761 ParamValue(llvm::Value *V, unsigned A) : Value(V), Alignment(A) {}
2762 public:
2763 static ParamValue forDirect(llvm::Value *value) {
2764 return ParamValue(value, 0);
2765 }
2766 static ParamValue forIndirect(Address addr) {
2767 assert(!addr.getAlignment().isZero());
2768 return ParamValue(addr.getPointer(), addr.getAlignment().getQuantity());
2769 }
2770
2771 bool isIndirect() const { return Alignment != 0; }
2772 llvm::Value *getAnyValue() const { return Value; }
2773
2774 llvm::Value *getDirectValue() const {
2775 assert(!isIndirect());
2776 return Value;
2777 }
2778
2779 Address getIndirectAddress() const {
2780 assert(isIndirect());
2781 return Address(Value, CharUnits::fromQuantity(Alignment));
2782 }
2783 };
2784
2785 /// EmitParmDecl - Emit a ParmVarDecl or an ImplicitParamDecl.
2786 void EmitParmDecl(const VarDecl &D, ParamValue Arg, unsigned ArgNo);
2787
2788 /// protectFromPeepholes - Protect a value that we're intending to
2789 /// store to the side, but which will probably be used later, from
2790 /// aggressive peepholing optimizations that might delete it.
2791 ///
2792 /// Pass the result to unprotectFromPeepholes to declare that
2793 /// protection is no longer required.
2794 ///
2795 /// There's no particular reason why this shouldn't apply to
2796 /// l-values, it's just that no existing peepholes work on pointers.
2797 PeepholeProtection protectFromPeepholes(RValue rvalue);
2798 void unprotectFromPeepholes(PeepholeProtection protection);
2799
2800 void EmitAlignmentAssumptionCheck(llvm::Value *Ptr, QualType Ty,
2801 SourceLocation Loc,
2802 SourceLocation AssumptionLoc,
2803 llvm::Value *Alignment,
2804 llvm::Value *OffsetValue,
2805 llvm::Value *TheCheck,
2806 llvm::Instruction *Assumption);
2807
2808 void EmitAlignmentAssumption(llvm::Value *PtrValue, QualType Ty,
2809 SourceLocation Loc, SourceLocation AssumptionLoc,
2810 llvm::Value *Alignment,
2811 llvm::Value *OffsetValue = nullptr);
2812
2813 void EmitAlignmentAssumption(llvm::Value *PtrValue, QualType Ty,
2814 SourceLocation Loc, SourceLocation AssumptionLoc,
2815 unsigned Alignment,
2816 llvm::Value *OffsetValue = nullptr);
2817
2818 void EmitAlignmentAssumption(llvm::Value *PtrValue, const Expr *E,
2819 SourceLocation AssumptionLoc, unsigned Alignment,
2820 llvm::Value *OffsetValue = nullptr);
2821
2822 //===--------------------------------------------------------------------===//
2823 // Statement Emission
2824 //===--------------------------------------------------------------------===//
2825
2826 /// EmitStopPoint - Emit a debug stoppoint if we are emitting debug info.
2827 void EmitStopPoint(const Stmt *S);
2828
2829 /// EmitStmt - Emit the code for the statement \arg S. It is legal to call
2830 /// this function even if there is no current insertion point.
2831 ///
2832 /// This function may clear the current insertion point; callers should use
2833 /// EnsureInsertPoint if they wish to subsequently generate code without first
2834 /// calling EmitBlock, EmitBranch, or EmitStmt.
2835 void EmitStmt(const Stmt *S, ArrayRef<const Attr *> Attrs = None);
2836
2837 /// EmitSimpleStmt - Try to emit a "simple" statement which does not
2838 /// necessarily require an insertion point or debug information; typically
2839 /// because the statement amounts to a jump or a container of other
2840 /// statements.
2841 ///
2842 /// \return True if the statement was handled.
2843 bool EmitSimpleStmt(const Stmt *S);
2844
2845 Address EmitCompoundStmt(const CompoundStmt &S, bool GetLast = false,
2846 AggValueSlot AVS = AggValueSlot::ignored());
2847 Address EmitCompoundStmtWithoutScope(const CompoundStmt &S,
2848 bool GetLast = false,
2849 AggValueSlot AVS =
2850 AggValueSlot::ignored());
2851
2852 /// EmitLabel - Emit the block for the given label. It is legal to call this
2853 /// function even if there is no current insertion point.
2854 void EmitLabel(const LabelDecl *D); // helper for EmitLabelStmt.
2855
2856 void EmitLabelStmt(const LabelStmt &S);
2857 void EmitAttributedStmt(const AttributedStmt &S);
2858 void EmitGotoStmt(const GotoStmt &S);
2859 void EmitIndirectGotoStmt(const IndirectGotoStmt &S);
2860 void EmitIfStmt(const IfStmt &S);
2861
2862 void EmitWhileStmt(const WhileStmt &S,
2863 ArrayRef<const Attr *> Attrs = None);
2864 void EmitDoStmt(const DoStmt &S, ArrayRef<const Attr *> Attrs = None);
2865 void EmitForStmt(const ForStmt &S,
2866 ArrayRef<const Attr *> Attrs = None);
2867 void EmitReturnStmt(const ReturnStmt &S);
2868 void EmitDeclStmt(const DeclStmt &S);
2869 void EmitBreakStmt(const BreakStmt &S);
2870 void EmitContinueStmt(const ContinueStmt &S);
2871 void EmitSwitchStmt(const SwitchStmt &S);
2872 void EmitDefaultStmt(const DefaultStmt &S);
2873 void EmitCaseStmt(const CaseStmt &S);
2874 void EmitCaseStmtRange(const CaseStmt &S);
2875 void EmitAsmStmt(const AsmStmt &S);
2876
2877 void EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S);
2878 void EmitObjCAtTryStmt(const ObjCAtTryStmt &S);
2879 void EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S);
2880 void EmitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt &S);
2881 void EmitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt &S);
2882
2883 void EmitCoroutineBody(const CoroutineBodyStmt &S);
2884 void EmitCoreturnStmt(const CoreturnStmt &S);
2885 RValue EmitCoawaitExpr(const CoawaitExpr &E,
2886 AggValueSlot aggSlot = AggValueSlot::ignored(),
2887 bool ignoreResult = false);
2888 LValue EmitCoawaitLValue(const CoawaitExpr *E);
2889 RValue EmitCoyieldExpr(const CoyieldExpr &E,
2890 AggValueSlot aggSlot = AggValueSlot::ignored(),
2891 bool ignoreResult = false);
2892 LValue EmitCoyieldLValue(const CoyieldExpr *E);
2893 RValue EmitCoroutineIntrinsic(const CallExpr *E, unsigned int IID);
2894
2895 void EnterCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);
2896 void ExitCXXTryStmt(const CXXTryStmt &S, bool IsFnTryBlock = false);
2897
2898 void EmitCXXTryStmt(const CXXTryStmt &S);
2899 void EmitSEHTryStmt(const SEHTryStmt &S);
2900 void EmitSEHLeaveStmt(const SEHLeaveStmt &S);
2901 void EnterSEHTryStmt(const SEHTryStmt &S);
2902 void ExitSEHTryStmt(const SEHTryStmt &S);
2903
2904 void pushSEHCleanup(CleanupKind kind,
2905 llvm::Function *FinallyFunc);
2906 void startOutlinedSEHHelper(CodeGenFunction &ParentCGF, bool IsFilter,
2907 const Stmt *OutlinedStmt);
2908
2909 llvm::Function *GenerateSEHFilterFunction(CodeGenFunction &ParentCGF,
2910 const SEHExceptStmt &Except);
2911
2912 llvm::Function *GenerateSEHFinallyFunction(CodeGenFunction &ParentCGF,
2913 const SEHFinallyStmt &Finally);
2914
2915 void EmitSEHExceptionCodeSave(CodeGenFunction &ParentCGF,
2916 llvm::Value *ParentFP,
2917 llvm::Value *EntryEBP);
2918 llvm::Value *EmitSEHExceptionCode();
2919 llvm::Value *EmitSEHExceptionInfo();
2920 llvm::Value *EmitSEHAbnormalTermination();
2921
2922 /// Emit simple code for OpenMP directives in Simd-only mode.
2923 void EmitSimpleOMPExecutableDirective(const OMPExecutableDirective &D);
2924
2925 /// Scan the outlined statement for captures from the parent function. For
2926 /// each capture, mark the capture as escaped and emit a call to
2927 /// llvm.localrecover. Insert the localrecover result into the LocalDeclMap.
2928 void EmitCapturedLocals(CodeGenFunction &ParentCGF, const Stmt *OutlinedStmt,
2929 bool IsFilter);
2930
2931 /// Recovers the address of a local in a parent function. ParentVar is the
2932 /// address of the variable used in the immediate parent function. It can
2933 /// either be an alloca or a call to llvm.localrecover if there are nested
2934 /// outlined functions. ParentFP is the frame pointer of the outermost parent
2935 /// frame.
2936 Address recoverAddrOfEscapedLocal(CodeGenFunction &ParentCGF,
2937 Address ParentVar,
2938 llvm::Value *ParentFP);
2939
2940 void EmitCXXForRangeStmt(const CXXForRangeStmt &S,
2941 ArrayRef<const Attr *> Attrs = None);
2942
2943 /// Controls insertion of cancellation exit blocks in worksharing constructs.
2944 class OMPCancelStackRAII {
2945 CodeGenFunction &CGF;
2946
2947 public:
2948 OMPCancelStackRAII(CodeGenFunction &CGF, OpenMPDirectiveKind Kind,
2949 bool HasCancel)
2950 : CGF(CGF) {
2951 CGF.OMPCancelStack.enter(CGF, Kind, HasCancel);
2952 }
2953 ~OMPCancelStackRAII() { CGF.OMPCancelStack.exit(CGF); }
2954 };
2955
2956 /// Returns calculated size of the specified type.
2957 llvm::Value *getTypeSize(QualType Ty);
2958 LValue InitCapturedStruct(const CapturedStmt &S);
2959 llvm::Function *EmitCapturedStmt(const CapturedStmt &S, CapturedRegionKind K);
2960 llvm::Function *GenerateCapturedStmtFunction(const CapturedStmt &S);
2961 Address GenerateCapturedStmtArgument(const CapturedStmt &S);
2962 llvm::Function *GenerateOpenMPCapturedStmtFunction(const CapturedStmt &S);
2963 void GenerateOpenMPCapturedVars(const CapturedStmt &S,
2964 SmallVectorImpl<llvm::Value *> &CapturedVars);
2965 void emitOMPSimpleStore(LValue LVal, RValue RVal, QualType RValTy,
2966 SourceLocation Loc);
2967 /// Perform element by element copying of arrays with type \a
2968 /// OriginalType from \a SrcAddr to \a DestAddr using copying procedure
2969 /// generated by \a CopyGen.
2970 ///
2971 /// \param DestAddr Address of the destination array.
2972 /// \param SrcAddr Address of the source array.
2973 /// \param OriginalType Type of destination and source arrays.
2974 /// \param CopyGen Copying procedure that copies value of single array element
2975 /// to another single array element.
2976 void EmitOMPAggregateAssign(
2977 Address DestAddr, Address SrcAddr, QualType OriginalType,
2978 const llvm::function_ref<void(Address, Address)> CopyGen);
2979 /// Emit proper copying of data from one variable to another.
2980 ///
2981 /// \param OriginalType Original type of the copied variables.
2982 /// \param DestAddr Destination address.
2983 /// \param SrcAddr Source address.
2984 /// \param DestVD Destination variable used in \a CopyExpr (for arrays, has
2985 /// type of the base array element).
2986 /// \param SrcVD Source variable used in \a CopyExpr (for arrays, has type of
2987 /// the base array element).
2988 /// \param Copy Actual copygin expression for copying data from \a SrcVD to \a
2989 /// DestVD.
2990 void EmitOMPCopy(QualType OriginalType,
2991 Address DestAddr, Address SrcAddr,
2992 const VarDecl *DestVD, const VarDecl *SrcVD,
2993 const Expr *Copy);
2994 /// Emit atomic update code for constructs: \a X = \a X \a BO \a E or
2995 /// \a X = \a E \a BO \a E.
2996 ///
2997 /// \param X Value to be updated.
2998 /// \param E Update value.
2999 /// \param BO Binary operation for update operation.
3000 /// \param IsXLHSInRHSPart true if \a X is LHS in RHS part of the update
3001 /// expression, false otherwise.
3002 /// \param AO Atomic ordering of the generated atomic instructions.
3003 /// \param CommonGen Code generator for complex expressions that cannot be
3004 /// expressed through atomicrmw instruction.
3005 /// \returns <true, OldAtomicValue> if simple 'atomicrmw' instruction was
3006 /// generated, <false, RValue::get(nullptr)> otherwise.
3007 std::pair<bool, RValue> EmitOMPAtomicSimpleUpdateExpr(
3008 LValue X, RValue E, BinaryOperatorKind BO, bool IsXLHSInRHSPart,
3009 llvm::AtomicOrdering AO, SourceLocation Loc,
3010 const llvm::function_ref<RValue(RValue)> CommonGen);
3011 bool EmitOMPFirstprivateClause(const OMPExecutableDirective &D,
3012 OMPPrivateScope &PrivateScope);
3013 void EmitOMPPrivateClause(const OMPExecutableDirective &D,
3014 OMPPrivateScope &PrivateScope);
3015 void EmitOMPUseDevicePtrClause(
3016 const OMPClause &C, OMPPrivateScope &PrivateScope,
3017 const llvm::DenseMap<const ValueDecl *, Address> &CaptureDeviceAddrMap);
3018 /// Emit code for copyin clause in \a D directive. The next code is
3019 /// generated at the start of outlined functions for directives:
3020 /// \code
3021 /// threadprivate_var1 = master_threadprivate_var1;
3022 /// operator=(threadprivate_var2, master_threadprivate_var2);
3023 /// ...
3024 /// __kmpc_barrier(&loc, global_tid);
3025 /// \endcode
3026 ///
3027 /// \param D OpenMP directive possibly with 'copyin' clause(s).
3028 /// \returns true if at least one copyin variable is found, false otherwise.
3029 bool EmitOMPCopyinClause(const OMPExecutableDirective &D);
3030 /// Emit initial code for lastprivate variables. If some variable is
3031 /// not also firstprivate, then the default initialization is used. Otherwise
3032 /// initialization of this variable is performed by EmitOMPFirstprivateClause
3033 /// method.
3034 ///
3035 /// \param D Directive that may have 'lastprivate' directives.
3036 /// \param PrivateScope Private scope for capturing lastprivate variables for
3037 /// proper codegen in internal captured statement.
3038 ///
3039 /// \returns true if there is at least one lastprivate variable, false
3040 /// otherwise.
3041 bool EmitOMPLastprivateClauseInit(const OMPExecutableDirective &D,
3042 OMPPrivateScope &PrivateScope);
3043 /// Emit final copying of lastprivate values to original variables at
3044 /// the end of the worksharing or simd directive.
3045 ///
3046 /// \param D Directive that has at least one 'lastprivate' directives.
3047 /// \param IsLastIterCond Boolean condition that must be set to 'i1 true' if
3048 /// it is the last iteration of the loop code in associated directive, or to
3049 /// 'i1 false' otherwise. If this item is nullptr, no final check is required.
3050 void EmitOMPLastprivateClauseFinal(const OMPExecutableDirective &D,
3051 bool NoFinals,
3052 llvm::Value *IsLastIterCond = nullptr);
3053 /// Emit initial code for linear clauses.
3054 void EmitOMPLinearClause(const OMPLoopDirective &D,
3055 CodeGenFunction::OMPPrivateScope &PrivateScope);
3056 /// Emit final code for linear clauses.
3057 /// \param CondGen Optional conditional code for final part of codegen for
3058 /// linear clause.
3059 void EmitOMPLinearClauseFinal(
3060 const OMPLoopDirective &D,
3061 const llvm::function_ref<llvm::Value *(CodeGenFunction &)> CondGen);
3062 /// Emit initial code for reduction variables. Creates reduction copies
3063 /// and initializes them with the values according to OpenMP standard.
3064 ///
3065 /// \param D Directive (possibly) with the 'reduction' clause.
3066 /// \param PrivateScope Private scope for capturing reduction variables for
3067 /// proper codegen in internal captured statement.
3068 ///
3069 void EmitOMPReductionClauseInit(const OMPExecutableDirective &D,
3070 OMPPrivateScope &PrivateScope);
3071 /// Emit final update of reduction values to original variables at
3072 /// the end of the directive.
3073 ///
3074 /// \param D Directive that has at least one 'reduction' directives.
3075 /// \param ReductionKind The kind of reduction to perform.
3076 void EmitOMPReductionClauseFinal(const OMPExecutableDirective &D,
3077 const OpenMPDirectiveKind ReductionKind);
3078 /// Emit initial code for linear variables. Creates private copies
3079 /// and initializes them with the values according to OpenMP standard.
3080 ///
3081 /// \param D Directive (possibly) with the 'linear' clause.
3082 /// \return true if at least one linear variable is found that should be
3083 /// initialized with the value of the original variable, false otherwise.
3084 bool EmitOMPLinearClauseInit(const OMPLoopDirective &D);
3085
3086 typedef const llvm::function_ref<void(CodeGenFunction & /*CGF*/,
3087 llvm::Value * /*OutlinedFn*/,
3088 const OMPTaskDataTy & /*Data*/)>
3089 TaskGenTy;
3090 void EmitOMPTaskBasedDirective(const OMPExecutableDirective &S,
3091 const OpenMPDirectiveKind CapturedRegion,
3092 const RegionCodeGenTy &BodyGen,
3093 const TaskGenTy &TaskGen, OMPTaskDataTy &Data);
3094 struct OMPTargetDataInfo {
3095 Address BasePointersArray = Address::invalid();
3096 Address PointersArray = Address::invalid();
3097 Address SizesArray = Address::invalid();
3098 unsigned NumberOfTargetItems = 0;
3099 explicit OMPTargetDataInfo() = default;
3100 OMPTargetDataInfo(Address BasePointersArray, Address PointersArray,
3101 Address SizesArray, unsigned NumberOfTargetItems)
3102 : BasePointersArray(BasePointersArray), PointersArray(PointersArray),
3103 SizesArray(SizesArray), NumberOfTargetItems(NumberOfTargetItems) {}
3104 };
3105 void EmitOMPTargetTaskBasedDirective(const OMPExecutableDirective &S,
3106 const RegionCodeGenTy &BodyGen,
3107 OMPTargetDataInfo &InputInfo);
3108
3109 void EmitOMPParallelDirective(const OMPParallelDirective &S);
3110 void EmitOMPSimdDirective(const OMPSimdDirective &S);
3111 void EmitOMPForDirective(const OMPForDirective &S);
3112 void EmitOMPForSimdDirective(const OMPForSimdDirective &S);
3113 void EmitOMPSectionsDirective(const OMPSectionsDirective &S);
3114 void EmitOMPSectionDirective(const OMPSectionDirective &S);
3115 void EmitOMPSingleDirective(const OMPSingleDirective &S);
3116 void EmitOMPMasterDirective(const OMPMasterDirective &S);
3117 void EmitOMPCriticalDirective(const OMPCriticalDirective &S);
3118 void EmitOMPParallelForDirective(const OMPParallelForDirective &S);
3119 void EmitOMPParallelForSimdDirective(const OMPParallelForSimdDirective &S);
3120 void EmitOMPParallelSectionsDirective(const OMPParallelSectionsDirective &S);
3121 void EmitOMPTaskDirective(const OMPTaskDirective &S);
3122 void EmitOMPTaskyieldDirective(const OMPTaskyieldDirective &S);
3123 void EmitOMPBarrierDirective(const OMPBarrierDirective &S);
3124 void EmitOMPTaskwaitDirective(const OMPTaskwaitDirective &S);
3125 void EmitOMPTaskgroupDirective(const OMPTaskgroupDirective &S);
3126 void EmitOMPFlushDirective(const OMPFlushDirective &S);
3127 void EmitOMPOrderedDirective(const OMPOrderedDirective &S);
3128 void EmitOMPAtomicDirective(const OMPAtomicDirective &S);
3129 void EmitOMPTargetDirective(const OMPTargetDirective &S);
3130 void EmitOMPTargetDataDirective(const OMPTargetDataDirective &S);
3131 void EmitOMPTargetEnterDataDirective(const OMPTargetEnterDataDirective &S);
3132 void EmitOMPTargetExitDataDirective(const OMPTargetExitDataDirective &S);
3133 void EmitOMPTargetUpdateDirective(const OMPTargetUpdateDirective &S);
3134 void EmitOMPTargetParallelDirective(const OMPTargetParallelDirective &S);
3135 void
3136 EmitOMPTargetParallelForDirective(const OMPTargetParallelForDirective &S);
3137 void EmitOMPTeamsDirective(const OMPTeamsDirective &S);
3138 void
3139 EmitOMPCancellationPointDirective(const OMPCancellationPointDirective &S);
3140 void EmitOMPCancelDirective(const OMPCancelDirective &S);
3141 void EmitOMPTaskLoopBasedDirective(const OMPLoopDirective &S);
3142 void EmitOMPTaskLoopDirective(const OMPTaskLoopDirective &S);
3143 void EmitOMPTaskLoopSimdDirective(const OMPTaskLoopSimdDirective &S);
3144 void EmitOMPDistributeDirective(const OMPDistributeDirective &S);
3145 void EmitOMPDistributeParallelForDirective(
3146 const OMPDistributeParallelForDirective &S);
3147 void EmitOMPDistributeParallelForSimdDirective(
3148 const OMPDistributeParallelForSimdDirective &S);
3149 void EmitOMPDistributeSimdDirective(const OMPDistributeSimdDirective &S);
3150 void EmitOMPTargetParallelForSimdDirective(
3151 const OMPTargetParallelForSimdDirective &S);
3152 void EmitOMPTargetSimdDirective(const OMPTargetSimdDirective &S);
3153 void EmitOMPTeamsDistributeDirective(const OMPTeamsDistributeDirective &S);
3154 void
3155 EmitOMPTeamsDistributeSimdDirective(const OMPTeamsDistributeSimdDirective &S);
3156 void EmitOMPTeamsDistributeParallelForSimdDirective(
3157 const OMPTeamsDistributeParallelForSimdDirective &S);
3158 void EmitOMPTeamsDistributeParallelForDirective(
3159 const OMPTeamsDistributeParallelForDirective &S);
3160 void EmitOMPTargetTeamsDirective(const OMPTargetTeamsDirective &S);
3161 void EmitOMPTargetTeamsDistributeDirective(
3162 const OMPTargetTeamsDistributeDirective &S);
3163 void EmitOMPTargetTeamsDistributeParallelForDirective(
3164 const OMPTargetTeamsDistributeParallelForDirective &S);
3165 void EmitOMPTargetTeamsDistributeParallelForSimdDirective(
3166 const OMPTargetTeamsDistributeParallelForSimdDirective &S);
3167 void EmitOMPTargetTeamsDistributeSimdDirective(
3168 const OMPTargetTeamsDistributeSimdDirective &S);
3169
3170 /// Emit device code for the target directive.
3171 static void EmitOMPTargetDeviceFunction(CodeGenModule &CGM,
3172 StringRef ParentName,
3173 const OMPTargetDirective &S);
3174 static void
3175 EmitOMPTargetParallelDeviceFunction(CodeGenModule &CGM, StringRef ParentName,
3176 const OMPTargetParallelDirective &S);
3177 /// Emit device code for the target parallel for directive.
3178 static void EmitOMPTargetParallelForDeviceFunction(
3179 CodeGenModule &CGM, StringRef ParentName,
3180 const OMPTargetParallelForDirective &S);
3181 /// Emit device code for the target parallel for simd directive.
3182 static void EmitOMPTargetParallelForSimdDeviceFunction(
3183 CodeGenModule &CGM, StringRef ParentName,
3184 const OMPTargetParallelForSimdDirective &S);
3185 /// Emit device code for the target teams directive.
3186 static void
3187 EmitOMPTargetTeamsDeviceFunction(CodeGenModule &CGM, StringRef ParentName,
3188 const OMPTargetTeamsDirective &S);
3189 /// Emit device code for the target teams distribute directive.
3190 static void EmitOMPTargetTeamsDistributeDeviceFunction(
3191 CodeGenModule &CGM, StringRef ParentName,
3192 const OMPTargetTeamsDistributeDirective &S);
3193 /// Emit device code for the target teams distribute simd directive.
3194 static void EmitOMPTargetTeamsDistributeSimdDeviceFunction(
3195 CodeGenModule &CGM, StringRef ParentName,
3196 const OMPTargetTeamsDistributeSimdDirective &S);
3197 /// Emit device code for the target simd directive.
3198 static void EmitOMPTargetSimdDeviceFunction(CodeGenModule &CGM,
3199 StringRef ParentName,
3200 const OMPTargetSimdDirective &S);
3201 /// Emit device code for the target teams distribute parallel for simd
3202 /// directive.
3203 static void EmitOMPTargetTeamsDistributeParallelForSimdDeviceFunction(
3204 CodeGenModule &CGM, StringRef ParentName,
3205 const OMPTargetTeamsDistributeParallelForSimdDirective &S);
3206
3207 static void EmitOMPTargetTeamsDistributeParallelForDeviceFunction(
3208 CodeGenModule &CGM, StringRef ParentName,
3209 const OMPTargetTeamsDistributeParallelForDirective &S);
3210 /// Emit inner loop of the worksharing/simd construct.
3211 ///
3212 /// \param S Directive, for which the inner loop must be emitted.
3213 /// \param RequiresCleanup true, if directive has some associated private
3214 /// variables.
3215 /// \param LoopCond Bollean condition for loop continuation.
3216 /// \param IncExpr Increment expression for loop control variable.
3217 /// \param BodyGen Generator for the inner body of the inner loop.
3218 /// \param PostIncGen Genrator for post-increment code (required for ordered
3219 /// loop directvies).
3220 void EmitOMPInnerLoop(
3221 const Stmt &S, bool RequiresCleanup, const Expr *LoopCond,
3222 const Expr *IncExpr,
3223 const llvm::function_ref<void(CodeGenFunction &)> BodyGen,
3224 const llvm::function_ref<void(CodeGenFunction &)> PostIncGen);
3225
3226 JumpDest getOMPCancelDestination(OpenMPDirectiveKind Kind);
3227 /// Emit initial code for loop counters of loop-based directives.
3228 void EmitOMPPrivateLoopCounters(const OMPLoopDirective &S,
3229 OMPPrivateScope &LoopScope);
3230
3231 /// Helper for the OpenMP loop directives.
3232 void EmitOMPLoopBody(const OMPLoopDirective &D, JumpDest LoopExit);
3233
3234 /// Emit code for the worksharing loop-based directive.
3235 /// \return true, if this construct has any lastprivate clause, false -
3236 /// otherwise.
3237 bool EmitOMPWorksharingLoop(const OMPLoopDirective &S, Expr *EUB,
3238 const CodeGenLoopBoundsTy &CodeGenLoopBounds,
3239 const CodeGenDispatchBoundsTy &CGDispatchBounds);
3240
3241 /// Emit code for the distribute loop-based directive.
3242 void EmitOMPDistributeLoop(const OMPLoopDirective &S,
3243 const CodeGenLoopTy &CodeGenLoop, Expr *IncExpr);
3244
3245 /// Helpers for the OpenMP loop directives.
3246 void EmitOMPSimdInit(const OMPLoopDirective &D, bool IsMonotonic = false);
3247 void EmitOMPSimdFinal(
3248 const OMPLoopDirective &D,
3249 const llvm::function_ref<llvm::Value *(CodeGenFunction &)> CondGen);
3250
3251 /// Emits the lvalue for the expression with possibly captured variable.
3252 LValue EmitOMPSharedLValue(const Expr *E);
3253
3254 private:
3255 /// Helpers for blocks.
3256 llvm::Value *EmitBlockLiteral(const CGBlockInfo &Info);
3257
3258 /// struct with the values to be passed to the OpenMP loop-related functions
3259 struct OMPLoopArguments {
3260 /// loop lower bound
3261 Address LB = Address::invalid();
3262 /// loop upper bound
3263 Address UB = Address::invalid();
3264 /// loop stride
3265 Address ST = Address::invalid();
3266 /// isLastIteration argument for runtime functions
3267 Address IL = Address::invalid();
3268 /// Chunk value generated by sema
3269 llvm::Value *Chunk = nullptr;
3270 /// EnsureUpperBound
3271 Expr *EUB = nullptr;
3272 /// IncrementExpression
3273 Expr *IncExpr = nullptr;
3274 /// Loop initialization
3275 Expr *Init = nullptr;
3276 /// Loop exit condition
3277 Expr *Cond = nullptr;
3278 /// Update of LB after a whole chunk has been executed
3279 Expr *NextLB = nullptr;
3280 /// Update of UB after a whole chunk has been executed
3281 Expr *NextUB = nullptr;
3282 OMPLoopArguments() = default;
3283 OMPLoopArguments(Address LB, Address UB, Address ST, Address IL,
3284 llvm::Value *Chunk = nullptr, Expr *EUB = nullptr,
3285 Expr *IncExpr = nullptr, Expr *Init = nullptr,
3286 Expr *Cond = nullptr, Expr *NextLB = nullptr,
3287 Expr *NextUB = nullptr)
3288 : LB(LB), UB(UB), ST(ST), IL(IL), Chunk(Chunk), EUB(EUB),
3289 IncExpr(IncExpr), Init(Init), Cond(Cond), NextLB(NextLB),
3290 NextUB(NextUB) {}
3291 };
3292 void EmitOMPOuterLoop(bool DynamicOrOrdered, bool IsMonotonic,
3293 const OMPLoopDirective &S, OMPPrivateScope &LoopScope,
3294 const OMPLoopArguments &LoopArgs,
3295 const CodeGenLoopTy &CodeGenLoop,
3296 const CodeGenOrderedTy &CodeGenOrdered);
3297 void EmitOMPForOuterLoop(const OpenMPScheduleTy &ScheduleKind,
3298 bool IsMonotonic, const OMPLoopDirective &S,
3299 OMPPrivateScope &LoopScope, bool Ordered,
3300 const OMPLoopArguments &LoopArgs,
3301 const CodeGenDispatchBoundsTy &CGDispatchBounds);
3302 void EmitOMPDistributeOuterLoop(OpenMPDistScheduleClauseKind ScheduleKind,
3303 const OMPLoopDirective &S,
3304 OMPPrivateScope &LoopScope,
3305 const OMPLoopArguments &LoopArgs,
3306 const CodeGenLoopTy &CodeGenLoopContent);
3307 /// Emit code for sections directive.
3308 void EmitSections(const OMPExecutableDirective &S);
3309
3310 public:
3311
3312 //===--------------------------------------------------------------------===//
3313 // LValue Expression Emission
3314 //===--------------------------------------------------------------------===//
3315
3316 /// GetUndefRValue - Get an appropriate 'undef' rvalue for the given type.
3317 RValue GetUndefRValue(QualType Ty);
3318
3319 /// EmitUnsupportedRValue - Emit a dummy r-value using the type of E
3320 /// and issue an ErrorUnsupported style diagnostic (using the
3321 /// provided Name).
3322 RValue EmitUnsupportedRValue(const Expr *E,
3323 const char *Name);
3324
3325 /// EmitUnsupportedLValue - Emit a dummy l-value using the type of E and issue
3326 /// an ErrorUnsupported style diagnostic (using the provided Name).
3327 LValue EmitUnsupportedLValue(const Expr *E,
3328 const char *Name);
3329
3330 /// EmitLValue - Emit code to compute a designator that specifies the location
3331 /// of the expression.
3332 ///
3333 /// This can return one of two things: a simple address or a bitfield
3334 /// reference. In either case, the LLVM Value* in the LValue structure is
3335 /// guaranteed to be an LLVM pointer type.
3336 ///
3337 /// If this returns a bitfield reference, nothing about the pointee type of
3338 /// the LLVM value is known: For example, it may not be a pointer to an
3339 /// integer.
3340 ///
3341 /// If this returns a normal address, and if the lvalue's C type is fixed
3342 /// size, this method guarantees that the returned pointer type will point to
3343 /// an LLVM type of the same size of the lvalue's type. If the lvalue has a
3344 /// variable length type, this is not possible.
3345 ///
3346 LValue EmitLValue(const Expr *E);
3347
3348 /// Same as EmitLValue but additionally we generate checking code to
3349 /// guard against undefined behavior. This is only suitable when we know
3350 /// that the address will be used to access the object.
3351 LValue EmitCheckedLValue(const Expr *E, TypeCheckKind TCK);
3352
3353 RValue convertTempToRValue(Address addr, QualType type,
3354 SourceLocation Loc);
3355
3356 void EmitAtomicInit(Expr *E, LValue lvalue);
3357
3358 bool LValueIsSuitableForInlineAtomic(LValue Src);
3359
3360 RValue EmitAtomicLoad(LValue LV, SourceLocation SL,
3361 AggValueSlot Slot = AggValueSlot::ignored());
3362
3363 RValue EmitAtomicLoad(LValue lvalue, SourceLocation loc,
3364 llvm::AtomicOrdering AO, bool IsVolatile = false,
3365 AggValueSlot slot = AggValueSlot::ignored());
3366
3367 void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit);
3368
3369 void EmitAtomicStore(RValue rvalue, LValue lvalue, llvm::AtomicOrdering AO,
3370 bool IsVolatile, bool isInit);
3371
3372 std::pair<RValue, llvm::Value *> EmitAtomicCompareExchange(
3373 LValue Obj, RValue Expected, RValue Desired, SourceLocation Loc,
3374 llvm::AtomicOrdering Success =
3375 llvm::AtomicOrdering::SequentiallyConsistent,
3376 llvm::AtomicOrdering Failure =
3377 llvm::AtomicOrdering::SequentiallyConsistent,
3378 bool IsWeak = false, AggValueSlot Slot = AggValueSlot::ignored());
3379
3380 void EmitAtomicUpdate(LValue LVal, llvm::AtomicOrdering AO,
3381 const llvm::function_ref<RValue(RValue)> &UpdateOp,
3382 bool IsVolatile);
3383
3384 /// EmitToMemory - Change a scalar value from its value
3385 /// representation to its in-memory representation.
3386 llvm::Value *EmitToMemory(llvm::Value *Value, QualType Ty);
3387
3388 /// EmitFromMemory - Change a scalar value from its memory
3389 /// representation to its value representation.
3390 llvm::Value *EmitFromMemory(llvm::Value *Value, QualType Ty);
3391
3392 /// Check if the scalar \p Value is within the valid range for the given
3393 /// type \p Ty.
3394 ///
3395 /// Returns true if a check is needed (even if the range is unknown).
3396 bool EmitScalarRangeCheck(llvm::Value *Value, QualType Ty,
3397 SourceLocation Loc);
3398
3399 /// EmitLoadOfScalar - Load a scalar value from an address, taking
3400 /// care to appropriately convert from the memory representation to
3401 /// the LLVM value representation.
3402 llvm::Value *EmitLoadOfScalar(Address Addr, bool Volatile, QualType Ty,
3403 SourceLocation Loc,
3404 AlignmentSource Source = AlignmentSource::Type,
3405 bool isNontemporal = false) {
3406 return EmitLoadOfScalar(Addr, Volatile, Ty, Loc, LValueBaseInfo(Source),
3407 CGM.getTBAAAccessInfo(Ty), isNontemporal);
3408 }
3409
3410 llvm::Value *EmitLoadOfScalar(Address Addr, bool Volatile, QualType Ty,
3411 SourceLocation Loc, LValueBaseInfo BaseInfo,
3412 TBAAAccessInfo TBAAInfo,
3413 bool isNontemporal = false);
3414
3415 /// EmitLoadOfScalar - Load a scalar value from an address, taking
3416 /// care to appropriately convert from the memory representation to
3417 /// the LLVM value representation. The l-value must be a simple
3418 /// l-value.
3419 llvm::Value *EmitLoadOfScalar(LValue lvalue, SourceLocation Loc);
3420
3421 /// EmitStoreOfScalar - Store a scalar value to an address, taking
3422 /// care to appropriately convert from the memory representation to
3423 /// the LLVM value representation.
3424 void EmitStoreOfScalar(llvm::Value *Value, Address Addr,
3425 bool Volatile, QualType Ty,
3426 AlignmentSource Source = AlignmentSource::Type,
3427 bool isInit = false, bool isNontemporal = false) {
3428 EmitStoreOfScalar(Value, Addr, Volatile, Ty, LValueBaseInfo(Source),
3429 CGM.getTBAAAccessInfo(Ty), isInit, isNontemporal);
3430 }
3431
3432 void EmitStoreOfScalar(llvm::Value *Value, Address Addr,
3433 bool Volatile, QualType Ty,
3434 LValueBaseInfo BaseInfo, TBAAAccessInfo TBAAInfo,
3435 bool isInit = false, bool isNontemporal = false);
3436
3437 /// EmitStoreOfScalar - Store a scalar value to an address, taking
3438 /// care to appropriately convert from the memory representation to
3439 /// the LLVM value representation. The l-value must be a simple
3440 /// l-value. The isInit flag indicates whether this is an initialization.
3441 /// If so, atomic qualifiers are ignored and the store is always non-atomic.
3442 void EmitStoreOfScalar(llvm::Value *value, LValue lvalue, bool isInit=false);
3443
3444 /// EmitLoadOfLValue - Given an expression that represents a value lvalue,
3445 /// this method emits the address of the lvalue, then loads the result as an
3446 /// rvalue, returning the rvalue.
3447 RValue EmitLoadOfLValue(LValue V, SourceLocation Loc);
3448 RValue EmitLoadOfExtVectorElementLValue(LValue V);
3449 RValue EmitLoadOfBitfieldLValue(LValue LV, SourceLocation Loc);
3450 RValue EmitLoadOfGlobalRegLValue(LValue LV);
3451
3452 /// EmitStoreThroughLValue - Store the specified rvalue into the specified
3453 /// lvalue, where both are guaranteed to the have the same type, and that type
3454 /// is 'Ty'.
3455 void EmitStoreThroughLValue(RValue Src, LValue Dst, bool isInit = false);
3456 void EmitStoreThroughExtVectorComponentLValue(RValue Src, LValue Dst);
3457 void EmitStoreThroughGlobalRegLValue(RValue Src, LValue Dst);
3458
3459 /// EmitStoreThroughBitfieldLValue - Store Src into Dst with same constraints
3460 /// as EmitStoreThroughLValue.
3461 ///
3462 /// \param Result [out] - If non-null, this will be set to a Value* for the
3463 /// bit-field contents after the store, appropriate for use as the result of
3464 /// an assignment to the bit-field.
3465 void EmitStoreThroughBitfieldLValue(RValue Src, LValue Dst,
3466 llvm::Value **Result=nullptr);
3467
3468 /// Emit an l-value for an assignment (simple or compound) of complex type.
3469 LValue EmitComplexAssignmentLValue(const BinaryOperator *E);
3470 LValue EmitComplexCompoundAssignmentLValue(const CompoundAssignOperator *E);
3471 LValue EmitScalarCompoundAssignWithComplex(const CompoundAssignOperator *E,
3472 llvm::Value *&Result);
3473
3474 // Note: only available for agg return types
3475 LValue EmitBinaryOperatorLValue(const BinaryOperator *E);
3476 LValue EmitCompoundAssignmentLValue(const CompoundAssignOperator *E);
3477 // Note: only available for agg return types
3478 LValue EmitCallExprLValue(const CallExpr *E);
3479 // Note: only available for agg return types
3480 LValue EmitVAArgExprLValue(const VAArgExpr *E);
3481 LValue EmitDeclRefLValue(const DeclRefExpr *E);
3482 LValue EmitStringLiteralLValue(const StringLiteral *E);
3483 LValue EmitObjCEncodeExprLValue(const ObjCEncodeExpr *E);
3484 LValue EmitPredefinedLValue(const PredefinedExpr *E);
3485 LValue EmitUnaryOpLValue(const UnaryOperator *E);
3486 LValue EmitArraySubscriptExpr(const ArraySubscriptExpr *E,
3487 bool Accessed = false);
3488 LValue EmitOMPArraySectionExpr(const OMPArraySectionExpr *E,
3489 bool IsLowerBound = true);
3490 LValue EmitExtVectorElementExpr(const ExtVectorElementExpr *E);
3491 LValue EmitMemberExpr(const MemberExpr *E);
3492 LValue EmitObjCIsaExpr(const ObjCIsaExpr *E);
3493 LValue EmitCompoundLiteralLValue(const CompoundLiteralExpr *E);
3494 LValue EmitInitListLValue(const InitListExpr *E);
3495 LValue EmitConditionalOperatorLValue(const AbstractConditionalOperator *E);
3496 LValue EmitCastLValue(const CastExpr *E);
3497 LValue EmitMaterializeTemporaryExpr(const MaterializeTemporaryExpr *E);
3498 LValue EmitOpaqueValueLValue(const OpaqueValueExpr *e);
3499
3500 Address EmitExtVectorElementLValue(LValue V);
3501
3502 RValue EmitRValueForField(LValue LV, const FieldDecl *FD, SourceLocation Loc);
3503
3504 Address EmitArrayToPointerDecay(const Expr *Array,
3505 LValueBaseInfo *BaseInfo = nullptr,
3506 TBAAAccessInfo *TBAAInfo = nullptr);
3507
3508 class ConstantEmission {
3509 llvm::PointerIntPair<llvm::Constant*, 1, bool> ValueAndIsReference;
3510 ConstantEmission(llvm::Constant *C, bool isReference)
3511 : ValueAndIsReference(C, isReference) {}
3512 public:
3513 ConstantEmission() {}
3514 static ConstantEmission forReference(llvm::Constant *C) {
3515 return ConstantEmission(C, true);
3516 }
3517 static ConstantEmission forValue(llvm::Constant *C) {
3518 return ConstantEmission(C, false);
3519 }
3520
3521 explicit operator bool() const {
3522 return ValueAndIsReference.getOpaqueValue() != nullptr;
3523 }
3524
3525 bool isReference() const { return ValueAndIsReference.getInt(); }
3526 LValue getReferenceLValue(CodeGenFunction &CGF, Expr *refExpr) const {
3527 assert(isReference());
3528 return CGF.MakeNaturalAlignAddrLValue(ValueAndIsReference.getPointer(),
3529 refExpr->getType());
3530 }
3531
3532 llvm::Constant *getValue() const {
3533 assert(!isReference());
3534 return ValueAndIsReference.getPointer();
3535 }
3536 };
3537
3538 ConstantEmission tryEmitAsConstant(DeclRefExpr *refExpr);
3539 ConstantEmission tryEmitAsConstant(const MemberExpr *ME);
3540 llvm::Value *emitScalarConstant(const ConstantEmission &Constant, Expr *E);
3541
3542 RValue EmitPseudoObjectRValue(const PseudoObjectExpr *e,
3543 AggValueSlot slot = AggValueSlot::ignored());
3544 LValue EmitPseudoObjectLValue(const PseudoObjectExpr *e);
3545
3546 llvm::Value *EmitIvarOffset(const ObjCInterfaceDecl *Interface,
3547 const ObjCIvarDecl *Ivar);
3548 LValue EmitLValueForField(LValue Base, const FieldDecl* Field);
3549 LValue EmitLValueForLambdaField(const FieldDecl *Field);
3550
3551 /// EmitLValueForFieldInitialization - Like EmitLValueForField, except that
3552 /// if the Field is a reference, this will return the address of the reference
3553 /// and not the address of the value stored in the reference.
3554 LValue EmitLValueForFieldInitialization(LValue Base,
3555 const FieldDecl* Field);
3556
3557 LValue EmitLValueForIvar(QualType ObjectTy,
3558 llvm::Value* Base, const ObjCIvarDecl *Ivar,
3559 unsigned CVRQualifiers);
3560
3561 LValue EmitCXXConstructLValue(const CXXConstructExpr *E);
3562 LValue EmitCXXBindTemporaryLValue(const CXXBindTemporaryExpr *E);
3563 LValue EmitLambdaLValue(const LambdaExpr *E);
3564 LValue EmitCXXTypeidLValue(const CXXTypeidExpr *E);
3565 LValue EmitCXXUuidofLValue(const CXXUuidofExpr *E);
3566
3567 LValue EmitObjCMessageExprLValue(const ObjCMessageExpr *E);
3568 LValue EmitObjCIvarRefLValue(const ObjCIvarRefExpr *E);
3569 LValue EmitStmtExprLValue(const StmtExpr *E);
3570 LValue EmitPointerToDataMemberBinaryExpr(const BinaryOperator *E);
3571 LValue EmitObjCSelectorLValue(const ObjCSelectorExpr *E);
3572 void EmitDeclRefExprDbgValue(const DeclRefExpr *E, const APValue &Init);
3573
3574 //===--------------------------------------------------------------------===//
3575 // Scalar Expression Emission
3576 //===--------------------------------------------------------------------===//
3577
3578 /// EmitCall - Generate a call of the given function, expecting the given
3579 /// result type, and using the given argument list which specifies both the
3580 /// LLVM arguments and the types they were derived from.
3581 RValue EmitCall(const CGFunctionInfo &CallInfo, const CGCallee &Callee,
3582 ReturnValueSlot ReturnValue, const CallArgList &Args,
3583 llvm::Instruction **callOrInvoke, SourceLocation Loc);
3584 RValue EmitCall(const CGFunctionInfo &CallInfo, const CGCallee &Callee,
3585 ReturnValueSlot ReturnValue, const CallArgList &Args,
3586 llvm::Instruction **callOrInvoke = nullptr) {
3587 return EmitCall(CallInfo, Callee, ReturnValue, Args, callOrInvoke,
3588 SourceLocation());
3589 }
3590 RValue EmitCall(QualType FnType, const CGCallee &Callee, const CallExpr *E,
3591 ReturnValueSlot ReturnValue, llvm::Value *Chain = nullptr);
3592 RValue EmitCallExpr(const CallExpr *E,
3593 ReturnValueSlot ReturnValue = ReturnValueSlot());
3594 RValue EmitSimpleCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue);
3595 CGCallee EmitCallee(const Expr *E);
3596
3597 void checkTargetFeatures(const CallExpr *E, const FunctionDecl *TargetDecl);
3598
3599 llvm::CallInst *EmitRuntimeCall(llvm::Value *callee,
3600 const Twine &name = "");
3601 llvm::CallInst *EmitRuntimeCall(llvm::Value *callee,
3602 ArrayRef<llvm::Value*> args,
3603 const Twine &name = "");
3604 llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee,
3605 const Twine &name = "");
3606 llvm::CallInst *EmitNounwindRuntimeCall(llvm::Value *callee,
3607 ArrayRef<llvm::Value*> args,
3608 const Twine &name = "");
3609
3610 SmallVector<llvm::OperandBundleDef, 1>
3611 getBundlesForFunclet(llvm::Value *Callee);
3612
3613 llvm::CallSite EmitCallOrInvoke(llvm::Value *Callee,
3614 ArrayRef<llvm::Value *> Args,
3615 const Twine &Name = "");
3616 llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee,
3617 ArrayRef<llvm::Value*> args,
3618 const Twine &name = "");
3619 llvm::CallSite EmitRuntimeCallOrInvoke(llvm::Value *callee,
3620 const Twine &name = "");
3621 void EmitNoreturnRuntimeCallOrInvoke(llvm::Value *callee,
3622 ArrayRef<llvm::Value*> args);
3623
3624 CGCallee BuildAppleKextVirtualCall(const CXXMethodDecl *MD,
3625 NestedNameSpecifier *Qual,
3626 llvm::Type *Ty);
3627
3628 CGCallee BuildAppleKextVirtualDestructorCall(const CXXDestructorDecl *DD,
3629 CXXDtorType Type,
3630 const CXXRecordDecl *RD);
3631
3632 // Return the copy constructor name with the prefix "__copy_constructor_"
3633 // removed.
3634 static std::string getNonTrivialCopyConstructorStr(QualType QT,
3635 CharUnits Alignment,
3636 bool IsVolatile,
3637 ASTContext &Ctx);
3638
3639 // Return the destructor name with the prefix "__destructor_" removed.
3640 static std::string getNonTrivialDestructorStr(QualType QT,
3641 CharUnits Alignment,
3642 bool IsVolatile,
3643 ASTContext &Ctx);
3644
3645 // These functions emit calls to the special functions of non-trivial C
3646 // structs.
3647 void defaultInitNonTrivialCStructVar(LValue Dst);
3648 void callCStructDefaultConstructor(LValue Dst);
3649 void callCStructDestructor(LValue Dst);
3650 void callCStructCopyConstructor(LValue Dst, LValue Src);
3651 void callCStructMoveConstructor(LValue Dst, LValue Src);
3652 void callCStructCopyAssignmentOperator(LValue Dst, LValue Src);
3653 void callCStructMoveAssignmentOperator(LValue Dst, LValue Src);
3654
3655 RValue
3656 EmitCXXMemberOrOperatorCall(const CXXMethodDecl *Method,
3657 const CGCallee &Callee,
3658 ReturnValueSlot ReturnValue, llvm::Value *This,
3659 llvm::Value *ImplicitParam,
3660 QualType ImplicitParamTy, const CallExpr *E,
3661 CallArgList *RtlArgs);
3662 RValue EmitCXXDestructorCall(const CXXDestructorDecl *DD,
3663 const CGCallee &Callee,
3664 llvm::Value *This, llvm::Value *ImplicitParam,
3665 QualType ImplicitParamTy, const CallExpr *E,
3666 StructorType Type);
3667 RValue EmitCXXMemberCallExpr(const CXXMemberCallExpr *E,
3668 ReturnValueSlot ReturnValue);
3669 RValue EmitCXXMemberOrOperatorMemberCallExpr(const CallExpr *CE,
3670 const CXXMethodDecl *MD,
3671 ReturnValueSlot ReturnValue,
3672 bool HasQualifier,
3673 NestedNameSpecifier *Qualifier,
3674 bool IsArrow, const Expr *Base);
3675 // Compute the object pointer.
3676 Address EmitCXXMemberDataPointerAddress(const Expr *E, Address base,
3677 llvm::Value *memberPtr,
3678 const MemberPointerType *memberPtrType,
3679 LValueBaseInfo *BaseInfo = nullptr,
3680 TBAAAccessInfo *TBAAInfo = nullptr);
3681 RValue EmitCXXMemberPointerCallExpr(const CXXMemberCallExpr *E,
3682 ReturnValueSlot ReturnValue);
3683
3684 RValue EmitCXXOperatorMemberCallExpr(const CXXOperatorCallExpr *E,
3685 const CXXMethodDecl *MD,
3686 ReturnValueSlot ReturnValue);
3687 RValue EmitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *E);
3688
3689 RValue EmitCUDAKernelCallExpr(const CUDAKernelCallExpr *E,
3690 ReturnValueSlot ReturnValue);
3691
3692 RValue EmitNVPTXDevicePrintfCallExpr(const CallExpr *E,
3693 ReturnValueSlot ReturnValue);
3694
3695 RValue EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
3696 const CallExpr *E, ReturnValueSlot ReturnValue);
3697
3698 RValue emitRotate(const CallExpr *E, bool IsRotateRight);
3699
3700 /// Emit IR for __builtin_os_log_format.
3701 RValue emitBuiltinOSLogFormat(const CallExpr &E);
3702
3703 llvm::Function *generateBuiltinOSLogHelperFunction(
3704 const analyze_os_log::OSLogBufferLayout &Layout,
3705 CharUnits BufferAlignment);
3706
3707 RValue EmitBlockCallExpr(const CallExpr *E, ReturnValueSlot ReturnValue);
3708
3709 /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call
3710 /// is unhandled by the current target.
3711 llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
3712
3713 llvm::Value *EmitAArch64CompareBuiltinExpr(llvm::Value *Op, llvm::Type *Ty,
3714 const llvm::CmpInst::Predicate Fp,
3715 const llvm::CmpInst::Predicate Ip,
3716 const llvm::Twine &Name = "");
3717 llvm::Value *EmitARMBuiltinExpr(unsigned BuiltinID, const CallExpr *E,
3718 llvm::Triple::ArchType Arch);
3719
3720 llvm::Value *EmitCommonNeonBuiltinExpr(unsigned BuiltinID,
3721 unsigned LLVMIntrinsic,
3722 unsigned AltLLVMIntrinsic,
3723 const char *NameHint,
3724 unsigned Modifier,
3725 const CallExpr *E,
3726 SmallVectorImpl<llvm::Value *> &Ops,
3727 Address PtrOp0, Address PtrOp1,
3728 llvm::Triple::ArchType Arch);
3729
3730 llvm::Value *EmitISOVolatileLoad(const CallExpr *E);
3731 llvm::Value *EmitISOVolatileStore(const CallExpr *E);
3732
3733 llvm::Function *LookupNeonLLVMIntrinsic(unsigned IntrinsicID,
3734 unsigned Modifier, llvm::Type *ArgTy,
3735 const CallExpr *E);
3736 llvm::Value *EmitNeonCall(llvm::Function *F,
3737 SmallVectorImpl<llvm::Value*> &O,
3738 const char *name,
3739 unsigned shift = 0, bool rightshift = false);
3740 llvm::Value *EmitNeonSplat(llvm::Value *V, llvm::Constant *Idx);
3741 llvm::Value *EmitNeonShiftVector(llvm::Value *V, llvm::Type *Ty,
3742 bool negateForRightShift);
3743 llvm::Value *EmitNeonRShiftImm(llvm::Value *Vec, llvm::Value *Amt,
3744 llvm::Type *Ty, bool usgn, const char *name);
3745 llvm::Value *vectorWrapScalar16(llvm::Value *Op);
3746 llvm::Value *EmitAArch64BuiltinExpr(unsigned BuiltinID, const CallExpr *E,
3747 llvm::Triple::ArchType Arch);
3748
3749 llvm::Value *BuildVector(ArrayRef<llvm::Value*> Ops);
3750 llvm::Value *EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E);
3751 llvm::Value *EmitPPCBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
3752 llvm::Value *EmitAMDGPUBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
3753 llvm::Value *EmitSystemZBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
3754 llvm::Value *EmitNVPTXBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
3755 llvm::Value *EmitWebAssemblyBuiltinExpr(unsigned BuiltinID,
3756 const CallExpr *E);
3757 llvm::Value *EmitHexagonBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
3758
3759 private:
3760 enum class MSVCIntrin;
3761
3762 public:
3763 llvm::Value *EmitMSVCBuiltinExpr(MSVCIntrin BuiltinID, const CallExpr *E);
3764
3765 llvm::Value *EmitBuiltinAvailable(ArrayRef<llvm::Value *> Args);
3766
3767 llvm::Value *EmitObjCProtocolExpr(const ObjCProtocolExpr *E);
3768 llvm::Value *EmitObjCStringLiteral(const ObjCStringLiteral *E);
3769 llvm::Value *EmitObjCBoxedExpr(const ObjCBoxedExpr *E);
3770 llvm::Value *EmitObjCArrayLiteral(const ObjCArrayLiteral *E);
3771 llvm::Value *EmitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E);
3772 llvm::Value *EmitObjCCollectionLiteral(const Expr *E,
3773 const ObjCMethodDecl *MethodWithObjects);
3774 llvm::Value *EmitObjCSelectorExpr(const ObjCSelectorExpr *E);
3775 RValue EmitObjCMessageExpr(const ObjCMessageExpr *E,
3776 ReturnValueSlot Return = ReturnValueSlot());
3777
3778 /// Retrieves the default cleanup kind for an ARC cleanup.
3779 /// Except under -fobjc-arc-eh, ARC cleanups are normal-only.
3780 CleanupKind getARCCleanupKind() {
3781 return CGM.getCodeGenOpts().ObjCAutoRefCountExceptions
3782 ? NormalAndEHCleanup : NormalCleanup;
3783 }
3784
3785 // ARC primitives.
3786 void EmitARCInitWeak(Address addr, llvm::Value *value);
3787 void EmitARCDestroyWeak(Address addr);
3788 llvm::Value *EmitARCLoadWeak(Address addr);
3789 llvm::Value *EmitARCLoadWeakRetained(Address addr);
3790 llvm::Value *EmitARCStoreWeak(Address addr, llvm::Value *value, bool ignored);
3791 void emitARCCopyAssignWeak(QualType Ty, Address DstAddr, Address SrcAddr);
3792 void emitARCMoveAssignWeak(QualType Ty, Address DstAddr, Address SrcAddr);
3793 void EmitARCCopyWeak(Address dst, Address src);
3794 void EmitARCMoveWeak(Address dst, Address src);
3795 llvm::Value *EmitARCRetainAutorelease(QualType type, llvm::Value *value);
3796 llvm::Value *EmitARCRetainAutoreleaseNonBlock(llvm::Value *value);
3797 llvm::Value *EmitARCStoreStrong(LValue lvalue, llvm::Value *value,
3798 bool resultIgnored);
3799 llvm::Value *EmitARCStoreStrongCall(Address addr, llvm::Value *value,
3800 bool resultIgnored);
3801 llvm::Value *EmitARCRetain(QualType type, llvm::Value *value);
3802 llvm::Value *EmitARCRetainNonBlock(llvm::Value *value);
3803 llvm::Value *EmitARCRetainBlock(llvm::Value *value, bool mandatory);
3804 void EmitARCDestroyStrong(Address addr, ARCPreciseLifetime_t precise);
3805 void EmitARCRelease(llvm::Value *value, ARCPreciseLifetime_t precise);
3806 llvm::Value *EmitARCAutorelease(llvm::Value *value);
3807 llvm::Value *EmitARCAutoreleaseReturnValue(llvm::Value *value);
3808 llvm::Value *EmitARCRetainAutoreleaseReturnValue(llvm::Value *value);
3809 llvm::Value *EmitARCRetainAutoreleasedReturnValue(llvm::Value *value);
3810 llvm::Value *EmitARCUnsafeClaimAutoreleasedReturnValue(llvm::Value *value);
3811
3812 llvm::Value *EmitObjCAutorelease(llvm::Value *value, llvm::Type *returnType);
3813 llvm::Value *EmitObjCRetainNonBlock(llvm::Value *value,
3814 llvm::Type *returnType);
3815 void EmitObjCRelease(llvm::Value *value, ARCPreciseLifetime_t precise);
3816
3817 std::pair<LValue,llvm::Value*>
3818 EmitARCStoreAutoreleasing(const BinaryOperator *e);
3819 std::pair<LValue,llvm::Value*>
3820 EmitARCStoreStrong(const BinaryOperator *e, bool ignored);
3821 std::pair<LValue,llvm::Value*>
3822 EmitARCStoreUnsafeUnretained(const BinaryOperator *e, bool ignored);
3823
3824 llvm::Value *EmitObjCAlloc(llvm::Value *value,
3825 llvm::Type *returnType);
3826 llvm::Value *EmitObjCAllocWithZone(llvm::Value *value,
3827 llvm::Type *returnType);
3828 llvm::Value *EmitObjCThrowOperand(const Expr *expr);
3829 llvm::Value *EmitObjCConsumeObject(QualType T, llvm::Value *Ptr);
3830 llvm::Value *EmitObjCExtendObjectLifetime(QualType T, llvm::Value *Ptr);
3831
3832 llvm::Value *EmitARCExtendBlockObject(const Expr *expr);
3833 llvm::Value *EmitARCReclaimReturnedObject(const Expr *e,
3834 bool allowUnsafeClaim);
3835 llvm::Value *EmitARCRetainScalarExpr(const Expr *expr);
3836 llvm::Value *EmitARCRetainAutoreleaseScalarExpr(const Expr *expr);
3837 llvm::Value *EmitARCUnsafeUnretainedScalarExpr(const Expr *expr);
3838
3839 void EmitARCIntrinsicUse(ArrayRef<llvm::Value*> values);
3840
3841 static Destroyer destroyARCStrongImprecise;
3842 static Destroyer destroyARCStrongPrecise;
3843 static Destroyer destroyARCWeak;
3844 static Destroyer emitARCIntrinsicUse;
3845 static Destroyer destroyNonTrivialCStruct;
3846
3847 void EmitObjCAutoreleasePoolPop(llvm::Value *Ptr);
3848 llvm::Value *EmitObjCAutoreleasePoolPush();
3849 llvm::Value *EmitObjCMRRAutoreleasePoolPush();
3850 void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr);
3851 void EmitObjCMRRAutoreleasePoolPop(llvm::Value *Ptr);
3852
3853 /// Emits a reference binding to the passed in expression.
3854 RValue EmitReferenceBindingToExpr(const Expr *E);
3855
3856 //===--------------------------------------------------------------------===//
3857 // Expression Emission
3858 //===--------------------------------------------------------------------===//
3859
3860 // Expressions are broken into three classes: scalar, complex, aggregate.
3861
3862 /// EmitScalarExpr - Emit the computation of the specified expression of LLVM
3863 /// scalar type, returning the result.
3864 llvm::Value *EmitScalarExpr(const Expr *E , bool IgnoreResultAssign = false);
3865
3866 /// Emit a conversion from the specified type to the specified destination
3867 /// type, both of which are LLVM scalar types.
3868 llvm::Value *EmitScalarConversion(llvm::Value *Src, QualType SrcTy,
3869 QualType DstTy, SourceLocation Loc);
3870
3871 /// Emit a conversion from the specified complex type to the specified
3872 /// destination type, where the destination type is an LLVM scalar type.
3873 llvm::Value *EmitComplexToScalarConversion(ComplexPairTy Src, QualType SrcTy,
3874 QualType DstTy,
3875 SourceLocation Loc);
3876
3877 /// EmitAggExpr - Emit the computation of the specified expression
3878 /// of aggregate type. The result is computed into the given slot,
3879 /// which may be null to indicate that the value is not needed.
3880 void EmitAggExpr(const Expr *E, AggValueSlot AS);
3881
3882 /// EmitAggExprToLValue - Emit the computation of the specified expression of
3883 /// aggregate type into a temporary LValue.
3884 LValue EmitAggExprToLValue(const Expr *E);
3885
3886 /// EmitExtendGCLifetime - Given a pointer to an Objective-C object,
3887 /// make sure it survives garbage collection until this point.
3888 void EmitExtendGCLifetime(llvm::Value *object);
3889
3890 /// EmitComplexExpr - Emit the computation of the specified expression of
3891 /// complex type, returning the result.
3892 ComplexPairTy EmitComplexExpr(const Expr *E,
3893 bool IgnoreReal = false,
3894 bool IgnoreImag = false);
3895
3896 /// EmitComplexExprIntoLValue - Emit the given expression of complex
3897 /// type and place its result into the specified l-value.
3898 void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit);
3899
3900 /// EmitStoreOfComplex - Store a complex number into the specified l-value.
3901 void EmitStoreOfComplex(ComplexPairTy V, LValue dest, bool isInit);
3902
3903 /// EmitLoadOfComplex - Load a complex number from the specified l-value.
3904 ComplexPairTy EmitLoadOfComplex(LValue src, SourceLocation loc);
3905
3906 Address emitAddrOfRealComponent(Address complex, QualType complexType);
3907 Address emitAddrOfImagComponent(Address complex, QualType complexType);
3908
3909 /// AddInitializerToStaticVarDecl - Add the initializer for 'D' to the
3910 /// global variable that has already been created for it. If the initializer
3911 /// has a different type than GV does, this may free GV and return a different
3912 /// one. Otherwise it just returns GV.
3913 llvm::GlobalVariable *
3914 AddInitializerToStaticVarDecl(const VarDecl &D,
3915 llvm::GlobalVariable *GV);
3916
3917 // Emit an @llvm.invariant.start call for the given memory region.
3918 void EmitInvariantStart(llvm::Constant *Addr, CharUnits Size);
3919
3920 /// EmitCXXGlobalVarDeclInit - Create the initializer for a C++
3921 /// variable with global storage.
3922 void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr,
3923 bool PerformInit);
3924
3925 llvm::Constant *createAtExitStub(const VarDecl &VD, llvm::Constant *Dtor,
3926 llvm::Constant *Addr);
3927
3928 /// Call atexit() with a function that passes the given argument to
3929 /// the given function.
3930 void registerGlobalDtorWithAtExit(const VarDecl &D, llvm::Constant *fn,
3931 llvm::Constant *addr);
3932
3933 /// Call atexit() with function dtorStub.
3934 void registerGlobalDtorWithAtExit(llvm::Constant *dtorStub);
3935
3936 /// Emit code in this function to perform a guarded variable
3937 /// initialization. Guarded initializations are used when it's not
3938 /// possible to prove that an initialization will be done exactly
3939 /// once, e.g. with a static local variable or a static data member
3940 /// of a class template.
3941 void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr,
3942 bool PerformInit);
3943
3944 enum class GuardKind { VariableGuard, TlsGuard };
3945
3946 /// Emit a branch to select whether or not to perform guarded initialization.
3947 void EmitCXXGuardedInitBranch(llvm::Value *NeedsInit,
3948 llvm::BasicBlock *InitBlock,
3949 llvm::BasicBlock *NoInitBlock,
3950 GuardKind Kind, const VarDecl *D);
3951
3952 /// GenerateCXXGlobalInitFunc - Generates code for initializing global
3953 /// variables.
3954 void
3955 GenerateCXXGlobalInitFunc(llvm::Function *Fn,
3956 ArrayRef<llvm::Function *> CXXThreadLocals,
3957 ConstantAddress Guard = ConstantAddress::invalid());
3958
3959 /// GenerateCXXGlobalDtorsFunc - Generates code for destroying global
3960 /// variables.
3961 void GenerateCXXGlobalDtorsFunc(
3962 llvm::Function *Fn,
3963 const std::vector<std::pair<llvm::WeakTrackingVH, llvm::Constant *>>
3964 &DtorsAndObjects);
3965
3966 void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn,
3967 const VarDecl *D,
3968 llvm::GlobalVariable *Addr,
3969 bool PerformInit);
3970
3971 void EmitCXXConstructExpr(const CXXConstructExpr *E, AggValueSlot Dest);
3972
3973 void EmitSynthesizedCXXCopyCtor(Address Dest, Address Src, const Expr *Exp);
3974
3975 void enterFullExpression(const FullExpr *E) {
3976 if (const auto *EWC = dyn_cast<ExprWithCleanups>(E))
3977 if (EWC->getNumObjects() == 0)
3978 return;
3979 enterNonTrivialFullExpression(E);
3980 }
3981 void enterNonTrivialFullExpression(const FullExpr *E);
3982
3983 void EmitCXXThrowExpr(const CXXThrowExpr *E, bool KeepInsertionPoint = true);
3984
3985 void EmitLambdaExpr(const LambdaExpr *E, AggValueSlot Dest);
3986
3987 RValue EmitAtomicExpr(AtomicExpr *E);
3988
3989 //===--------------------------------------------------------------------===//
3990 // Annotations Emission
3991 //===--------------------------------------------------------------------===//
3992
3993 /// Emit an annotation call (intrinsic or builtin).
3994 llvm::Value *EmitAnnotationCall(llvm::Value *AnnotationFn,
3995 llvm::Value *AnnotatedVal,
3996 StringRef AnnotationStr,
3997 SourceLocation Location);
3998
3999 /// Emit local annotations for the local variable V, declared by D.
4000 void EmitVarAnnotations(const VarDecl *D, llvm::Value *V);
4001
4002 /// Emit field annotations for the given field & value. Returns the
4003 /// annotation result.
4004 Address EmitFieldAnnotations(const FieldDecl *D, Address V);
4005
4006 //===--------------------------------------------------------------------===//
4007 // Internal Helpers
4008 //===--------------------------------------------------------------------===//
4009
4010 /// ContainsLabel - Return true if the statement contains a label in it. If
4011 /// this statement is not executed normally, it not containing a label means
4012 /// that we can just remove the code.
4013 static bool ContainsLabel(const Stmt *S, bool IgnoreCaseStmts = false);
4014
4015 /// containsBreak - Return true if the statement contains a break out of it.
4016 /// If the statement (recursively) contains a switch or loop with a break
4017 /// inside of it, this is fine.
4018 static bool containsBreak(const Stmt *S);
4019
4020 /// Determine if the given statement might introduce a declaration into the
4021 /// current scope, by being a (possibly-labelled) DeclStmt.
4022 static bool mightAddDeclToScope(const Stmt *S);
4023
4024 /// ConstantFoldsToSimpleInteger - If the specified expression does not fold
4025 /// to a constant, or if it does but contains a label, return false. If it
4026 /// constant folds return true and set the boolean result in Result.
4027 bool ConstantFoldsToSimpleInteger(const Expr *Cond, bool &Result,
4028 bool AllowLabels = false);
4029
4030 /// ConstantFoldsToSimpleInteger - If the specified expression does not fold
4031 /// to a constant, or if it does but contains a label, return false. If it
4032 /// constant folds return true and set the folded value.
4033 bool ConstantFoldsToSimpleInteger(const Expr *Cond, llvm::APSInt &Result,
4034 bool AllowLabels = false);
4035
4036 /// EmitBranchOnBoolExpr - Emit a branch on a boolean condition (e.g. for an
4037 /// if statement) to the specified blocks. Based on the condition, this might
4038 /// try to simplify the codegen of the conditional based on the branch.
4039 /// TrueCount should be the number of times we expect the condition to
4040 /// evaluate to true based on PGO data.
4041 void EmitBranchOnBoolExpr(const Expr *Cond, llvm::BasicBlock *TrueBlock,
4042 llvm::BasicBlock *FalseBlock, uint64_t TrueCount);
4043
4044 /// Given an assignment `*LHS = RHS`, emit a test that checks if \p RHS is
4045 /// nonnull, if \p LHS is marked _Nonnull.
4046 void EmitNullabilityCheck(LValue LHS, llvm::Value *RHS, SourceLocation Loc);
4047
4048 /// An enumeration which makes it easier to specify whether or not an
4049 /// operation is a subtraction.
4050 enum { NotSubtraction = false, IsSubtraction = true };
4051
4052 /// Same as IRBuilder::CreateInBoundsGEP, but additionally emits a check to
4053 /// detect undefined behavior when the pointer overflow sanitizer is enabled.
4054 /// \p SignedIndices indicates whether any of the GEP indices are signed.
4055 /// \p IsSubtraction indicates whether the expression used to form the GEP
4056 /// is a subtraction.
4057 llvm::Value *EmitCheckedInBoundsGEP(llvm::Value *Ptr,
4058 ArrayRef<llvm::Value *> IdxList,
4059 bool SignedIndices,
4060 bool IsSubtraction,
4061 SourceLocation Loc,
4062 const Twine &Name = "");
4063
4064 /// Specifies which type of sanitizer check to apply when handling a
4065 /// particular builtin.
4066 enum BuiltinCheckKind {
4067 BCK_CTZPassedZero,
4068 BCK_CLZPassedZero,
4069 };
4070
4071 /// Emits an argument for a call to a builtin. If the builtin sanitizer is
4072 /// enabled, a runtime check specified by \p Kind is also emitted.
4073 llvm::Value *EmitCheckedArgForBuiltin(const Expr *E, BuiltinCheckKind Kind);
4074
4075 /// Emit a description of a type in a format suitable for passing to
4076 /// a runtime sanitizer handler.
4077 llvm::Constant *EmitCheckTypeDescriptor(QualType T);
4078
4079 /// Convert a value into a format suitable for passing to a runtime
4080 /// sanitizer handler.
4081 llvm::Value *EmitCheckValue(llvm::Value *V);
4082
4083 /// Emit a description of a source location in a format suitable for
4084 /// passing to a runtime sanitizer handler.
4085 llvm::Constant *EmitCheckSourceLocation(SourceLocation Loc);
4086
4087 /// Create a basic block that will call a handler function in a
4088 /// sanitizer runtime with the provided arguments, and create a conditional
4089 /// branch to it.
4090 void EmitCheck(ArrayRef<std::pair<llvm::Value *, SanitizerMask>> Checked,
4091 SanitizerHandler Check, ArrayRef<llvm::Constant *> StaticArgs,
4092 ArrayRef<llvm::Value *> DynamicArgs);
4093
4094 /// Emit a slow path cross-DSO CFI check which calls __cfi_slowpath
4095 /// if Cond if false.
4096 void EmitCfiSlowPathCheck(SanitizerMask Kind, llvm::Value *Cond,
4097 llvm::ConstantInt *TypeId, llvm::Value *Ptr,
4098 ArrayRef<llvm::Constant *> StaticArgs);
4099
4100 /// Emit a reached-unreachable diagnostic if \p Loc is valid and runtime
4101 /// checking is enabled. Otherwise, just emit an unreachable instruction.
4102 void EmitUnreachable(SourceLocation Loc);
4103
4104 /// Create a basic block that will call the trap intrinsic, and emit a
4105 /// conditional branch to it, for the -ftrapv checks.
4106 void EmitTrapCheck(llvm::Value *Checked);
4107
4108 /// Emit a call to trap or debugtrap and attach function attribute
4109 /// "trap-func-name" if specified.
4110 llvm::CallInst *EmitTrapCall(llvm::Intrinsic::ID IntrID);
4111
4112 /// Emit a stub for the cross-DSO CFI check function.
4113 void EmitCfiCheckStub();
4114
4115 /// Emit a cross-DSO CFI failure handling function.
4116 void EmitCfiCheckFail();
4117
4118 /// Create a check for a function parameter that may potentially be
4119 /// declared as non-null.
4120 void EmitNonNullArgCheck(RValue RV, QualType ArgType, SourceLocation ArgLoc,
4121 AbstractCallee AC, unsigned ParmNum);
4122
4123 /// EmitCallArg - Emit a single call argument.
4124 void EmitCallArg(CallArgList &args, const Expr *E, QualType ArgType);
4125
4126 /// EmitDelegateCallArg - We are performing a delegate call; that
4127 /// is, the current function is delegating to another one. Produce
4128 /// a r-value suitable for passing the given parameter.
4129 void EmitDelegateCallArg(CallArgList &args, const VarDecl *param,
4130 SourceLocation loc);
4131
4132 /// SetFPAccuracy - Set the minimum required accuracy of the given floating
4133 /// point operation, expressed as the maximum relative error in ulp.
4134 void SetFPAccuracy(llvm::Value *Val, float Accuracy);
4135
4136 private:
4137 llvm::MDNode *getRangeForLoadFromType(QualType Ty);
4138 void EmitReturnOfRValue(RValue RV, QualType Ty);
4139
4140 void deferPlaceholderReplacement(llvm::Instruction *Old, llvm::Value *New);
4141
4142 llvm::SmallVector<std::pair<llvm::Instruction *, llvm::Value *>, 4>
4143 DeferredReplacements;
4144
4145 /// Set the address of a local variable.
4146 void setAddrOfLocalVar(const VarDecl *VD, Address Addr) {
4147 assert(!LocalDeclMap.count(VD) && "Decl already exists in LocalDeclMap!");
4148 LocalDeclMap.insert({VD, Addr});
4149 }
4150
4151 /// ExpandTypeFromArgs - Reconstruct a structure of type \arg Ty
4152 /// from function arguments into \arg Dst. See ABIArgInfo::Expand.
4153 ///
4154 /// \param AI - The first function argument of the expansion.
4155 void ExpandTypeFromArgs(QualType Ty, LValue Dst,
4156 SmallVectorImpl<llvm::Value *>::iterator &AI);
4157
4158 /// ExpandTypeToArgs - Expand an CallArg \arg Arg, with the LLVM type for \arg
4159 /// Ty, into individual arguments on the provided vector \arg IRCallArgs,
4160 /// starting at index \arg IRCallArgPos. See ABIArgInfo::Expand.
4161 void ExpandTypeToArgs(QualType Ty, CallArg Arg, llvm::FunctionType *IRFuncTy,
4162 SmallVectorImpl<llvm::Value *> &IRCallArgs,
4163 unsigned &IRCallArgPos);
4164
4165 llvm::Value* EmitAsmInput(const TargetInfo::ConstraintInfo &Info,
4166 const Expr *InputExpr, std::string &ConstraintStr);
4167
4168 llvm::Value* EmitAsmInputLValue(const TargetInfo::ConstraintInfo &Info,
4169 LValue InputValue, QualType InputType,
4170 std::string &ConstraintStr,
4171 SourceLocation Loc);
4172
4173 /// Attempts to statically evaluate the object size of E. If that
4174 /// fails, emits code to figure the size of E out for us. This is
4175 /// pass_object_size aware.
4176 ///
4177 /// If EmittedExpr is non-null, this will use that instead of re-emitting E.
4178 llvm::Value *evaluateOrEmitBuiltinObjectSize(const Expr *E, unsigned Type,
4179 llvm::IntegerType *ResType,
4180 llvm::Value *EmittedE);
4181
4182 /// Emits the size of E, as required by __builtin_object_size. This
4183 /// function is aware of pass_object_size parameters, and will act accordingly
4184 /// if E is a parameter with the pass_object_size attribute.
4185 llvm::Value *emitBuiltinObjectSize(const Expr *E, unsigned Type,
4186 llvm::IntegerType *ResType,
4187 llvm::Value *EmittedE);
4188
4189 public:
4190 #ifndef NDEBUG
4191 // Determine whether the given argument is an Objective-C method
4192 // that may have type parameters in its signature.
4193 static bool isObjCMethodWithTypeParams(const ObjCMethodDecl *method) {
4194 const DeclContext *dc = method->getDeclContext();
4195 if (const ObjCInterfaceDecl *classDecl= dyn_cast<ObjCInterfaceDecl>(dc)) {
4196 return classDecl->getTypeParamListAsWritten();
4197 }
4198
4199 if (const ObjCCategoryDecl *catDecl = dyn_cast<ObjCCategoryDecl>(dc)) {
4200 return catDecl->getTypeParamList();
4201 }
4202
4203 return false;
4204 }
4205
4206 template<typename T>
4207 static bool isObjCMethodWithTypeParams(const T *) { return false; }
4208 #endif
4209
4210 enum class EvaluationOrder {
4211 ///! No language constraints on evaluation order.
4212 Default,
4213 ///! Language semantics require left-to-right evaluation.
4214 ForceLeftToRight,
4215 ///! Language semantics require right-to-left evaluation.
4216 ForceRightToLeft
4217 };
4218
4219 /// EmitCallArgs - Emit call arguments for a function.
4220 template <typename T>
4221 void EmitCallArgs(CallArgList &Args, const T *CallArgTypeInfo,
4222 llvm::iterator_range<CallExpr::const_arg_iterator> ArgRange,
4223 AbstractCallee AC = AbstractCallee(),
4224 unsigned ParamsToSkip = 0,
4225 EvaluationOrder Order = EvaluationOrder::Default) {
4226 SmallVector<QualType, 16> ArgTypes;
4227 CallExpr::const_arg_iterator Arg = ArgRange.begin();
4228
4229 assert((ParamsToSkip == 0 || CallArgTypeInfo) &&
4230 "Can't skip parameters if type info is not provided");
4231 if (CallArgTypeInfo) {
4232 #ifndef NDEBUG
4233 bool isGenericMethod = isObjCMethodWithTypeParams(CallArgTypeInfo);
4234 #endif
4235
4236 // First, use the argument types that the type info knows about
4237 for (auto I = CallArgTypeInfo->param_type_begin() + ParamsToSkip,
4238 E = CallArgTypeInfo->param_type_end();
4239 I != E; ++I, ++Arg) {
4240 assert(Arg != ArgRange.end() && "Running over edge of argument list!");
4241 assert((isGenericMethod ||
4242 ((*I)->isVariablyModifiedType() ||
4243 (*I).getNonReferenceType()->isObjCRetainableType() ||
4244 getContext()
4245 .getCanonicalType((*I).getNonReferenceType())
4246 .getTypePtr() ==
4247 getContext()
4248 .getCanonicalType((*Arg)->getType())
4249 .getTypePtr())) &&
4250 "type mismatch in call argument!");
4251 ArgTypes.push_back(*I);
4252 }
4253 }
4254
4255 // Either we've emitted all the call args, or we have a call to variadic
4256 // function.
4257 assert((Arg == ArgRange.end() || !CallArgTypeInfo ||
4258 CallArgTypeInfo->isVariadic()) &&
4259 "Extra arguments in non-variadic function!");
4260
4261 // If we still have any arguments, emit them using the type of the argument.
4262 for (auto *A : llvm::make_range(Arg, ArgRange.end()))
4263 ArgTypes.push_back(CallArgTypeInfo ? getVarArgType(A) : A->getType());
4264
4265 EmitCallArgs(Args, ArgTypes, ArgRange, AC, ParamsToSkip, Order);
4266 }
4267
4268 void EmitCallArgs(CallArgList &Args, ArrayRef<QualType> ArgTypes,
4269 llvm::iterator_range<CallExpr::const_arg_iterator> ArgRange,
4270 AbstractCallee AC = AbstractCallee(),
4271 unsigned ParamsToSkip = 0,
4272 EvaluationOrder Order = EvaluationOrder::Default);
4273
4274 /// EmitPointerWithAlignment - Given an expression with a pointer type,
4275 /// emit the value and compute our best estimate of the alignment of the
4276 /// pointee.
4277 ///
4278 /// \param BaseInfo - If non-null, this will be initialized with
4279 /// information about the source of the alignment and the may-alias
4280 /// attribute. Note that this function will conservatively fall back on
4281 /// the type when it doesn't recognize the expression and may-alias will
4282 /// be set to false.
4283 ///
4284 /// One reasonable way to use this information is when there's a language
4285 /// guarantee that the pointer must be aligned to some stricter value, and
4286 /// we're simply trying to ensure that sufficiently obvious uses of under-
4287 /// aligned objects don't get miscompiled; for example, a placement new
4288 /// into the address of a local variable. In such a case, it's quite
4289 /// reasonable to just ignore the returned alignment when it isn't from an
4290 /// explicit source.
4291 Address EmitPointerWithAlignment(const Expr *Addr,
4292 LValueBaseInfo *BaseInfo = nullptr,
4293 TBAAAccessInfo *TBAAInfo = nullptr);
4294
4295 /// If \p E references a parameter with pass_object_size info or a constant
4296 /// array size modifier, emit the object size divided by the size of \p EltTy.
4297 /// Otherwise return null.
4298 llvm::Value *LoadPassedObjectSize(const Expr *E, QualType EltTy);
4299
4300 void EmitSanitizerStatReport(llvm::SanitizerStatKind SSK);
4301
4302 struct MultiVersionResolverOption {
4303 llvm::Function *Function;
4304 FunctionDecl *FD;
4305 struct Conds {
4306 StringRef Architecture;
4307 llvm::SmallVector<StringRef, 8> Features;
4308
4309 Conds(StringRef Arch, ArrayRef<StringRef> Feats)
4310 : Architecture(Arch), Features(Feats.begin(), Feats.end()) {}
4311 } Conditions;
4312
4313 MultiVersionResolverOption(llvm::Function *F, StringRef Arch,
4314 ArrayRef<StringRef> Feats)
4315 : Function(F), Conditions(Arch, Feats) {}
4316 };
4317
4318 // Emits the body of a multiversion function's resolver. Assumes that the
4319 // options are already sorted in the proper order, with the 'default' option
4320 // last (if it exists).
4321 void EmitMultiVersionResolver(llvm::Function *Resolver,
4322 ArrayRef<MultiVersionResolverOption> Options);
4323
4324 static uint64_t GetX86CpuSupportsMask(ArrayRef<StringRef> FeatureStrs);
4325
4326 private:
4327 QualType getVarArgType(const Expr *Arg);
4328
4329 void EmitDeclMetadata();
4330
4331 BlockByrefHelpers *buildByrefHelpers(llvm::StructType &byrefType,
4332 const AutoVarEmission &emission);
4333
4334 void AddObjCARCExceptionMetadata(llvm::Instruction *Inst);
4335
4336 llvm::Value *GetValueForARMHint(unsigned BuiltinID);
4337 llvm::Value *EmitX86CpuIs(const CallExpr *E);
4338 llvm::Value *EmitX86CpuIs(StringRef CPUStr);
4339 llvm::Value *EmitX86CpuSupports(const CallExpr *E);
4340 llvm::Value *EmitX86CpuSupports(ArrayRef<StringRef> FeatureStrs);
4341 llvm::Value *EmitX86CpuSupports(uint64_t Mask);
4342 llvm::Value *EmitX86CpuInit();
4343 llvm::Value *FormResolverCondition(const MultiVersionResolverOption &RO);
4344 };
4345
4346 inline DominatingLLVMValue::saved_type
4347 DominatingLLVMValue::save(CodeGenFunction &CGF, llvm::Value *value) {
4348 if (!needsSaving(value)) return saved_type(value, false);
4349
4350 // Otherwise, we need an alloca.
4351 auto align = CharUnits::fromQuantity(
4352 CGF.CGM.getDataLayout().getPrefTypeAlignment(value->getType()));
4353 Address alloca =
4354 CGF.CreateTempAlloca(value->getType(), align, "cond-cleanup.save");
4355 CGF.Builder.CreateStore(value, alloca);
4356
4357 return saved_type(alloca.getPointer(), true);
4358 }
4359
4360 inline llvm::Value *DominatingLLVMValue::restore(CodeGenFunction &CGF,
4361 saved_type value) {
4362 // If the value says it wasn't saved, trust that it's still dominating.
4363 if (!value.getInt()) return value.getPointer();
4364
4365 // Otherwise, it should be an alloca instruction, as set up in save().
4366 auto alloca = cast<llvm::AllocaInst>(value.getPointer());
4367 return CGF.Builder.CreateAlignedLoad(alloca, alloca->getAlignment());
4368 }
4369
4370 } // end namespace CodeGen
4371 } // end namespace clang
4372
4373 #endif
clang::CodeGen::CodeGenModule::getDataLayout
const llvm::DataLayout & getDataLayout() const
Definition: CodeGenModule.h:661
clang::CXXOperatorCallExpr
A call to an overloaded operator written using operator syntax.
Definition: ExprCXX.h:78
clang::CodeGen::ReturnValueSlot
ReturnValueSlot - Contains the address where the return value of a function can be stored...
Definition: CGCall.h:361
clang::CodeGen::CodeGenFunction::getArrayInitIndex
llvm::Value * getArrayInitIndex()
Get the index of the current ArrayInitLoopExpr, if any.
Definition: CodeGenFunction.h:2360
clang::Builtin::ID
ID
Definition: Builtins.h:49
clang::CodeGen::CodeGenPGO::getStmtCount
Optional< uint64_t > getStmtCount(const Stmt *S)
Check if an execution count is known for a given statement.
Definition: CodeGenPGO.h:63
clang::OMPDistributeSimdDirective
This represents &#39;#pragma omp distribute simd&#39; composite directive.
Definition: StmtOpenMP.h:3248
clang::CodeGen::BlockByrefInfo
Information about the layout of a __block variable.
Definition: CGBlocks.h:144
clang::OMPMasterDirective
This represents &#39;#pragma omp master&#39; directive.
Definition: StmtOpenMP.h:1431
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::EmitBody
virtual void EmitBody(CodeGenFunction &CGF, const Stmt *S)
Emit the captured statement body.
Definition: CodeGenFunction.h:386
clang::CodeGen::CodeGenFunction::CFITCK_DerivedCast
Definition: CodeGenFunction.h:1909
clang::OMPTaskDirective
This represents &#39;#pragma omp task&#39; directive.
Definition: StmtOpenMP.h:1771
clang::FunctionDecl
Represents a function declaration or definition.
Definition: Decl.h:1738
clang::CodeGen::CodeGenFunction::VlaSizePair
Definition: CodeGenFunction.h:2407
clang::CodeGen::CodeGenFunction::disableDebugInfo
void disableDebugInfo()
Definition: CodeGenFunction.h:1602
clang::CodeGen::CodeGenFunction::ConditionalEvaluation::end
void end(CodeGenFunction &CGF)
Definition: CodeGenFunction.h:1008
clang::CodeGen::CodeGenFunction::InlinedInheritingConstructorScope::~InlinedInheritingConstructorScope
~InlinedInheritingConstructorScope()
Definition: CodeGenFunction.h:1479
clang::CodeGen::CodeGenFunction::LifetimeExtendedCleanupHeader::getKind
CleanupKind getKind() const
Definition: CodeGenFunction.h:519
clang::CodeGen::CodeGenFunction::ConstantEmission::getReferenceLValue
LValue getReferenceLValue(CodeGenFunction &CGF, Expr *refExpr) const
Definition: CodeGenFunction.h:3526
clang::CodeGen::CodeGenFunction::CXXDefaultInitExprScope::CXXDefaultInitExprScope
CXXDefaultInitExprScope(CodeGenFunction &CGF)
Definition: CodeGenFunction.h:1420
clang::OMPD_unknown
Definition: OpenMPKinds.h:29
clang::CodeGen::OMPTaskDataTy
Definition: CGOpenMPRuntime.h:92
clang::PointerType
PointerType - C99 6.7.5.1 - Pointer Declarators.
Definition: Type.h:2537
clang::CodeGen::CodeGenFunction::ConstantEmission::getValue
llvm::Constant * getValue() const
Definition: CodeGenFunction.h:3532
clang::OpenMPScheduleTy
Scheduling data for loop-based OpenMP directives.
Definition: OpenMPKinds.h:141
clang::QualType
A (possibly-)qualified type.
Definition: Type.h:638
clang::CodeGen::CodeGenFunction::CXXDefaultInitExprScope::CGF
CodeGenFunction & CGF
Definition: CodeGenFunction.h:1432
clang::CodeGen::CodeGenModule::getTypes
CodeGenTypes & getTypes()
Definition: CodeGenModule.h:676
BuildAppleKextVirtualCall
static CGCallee BuildAppleKextVirtualCall(CodeGenFunction &CGF, GlobalDecl GD, llvm::Type *Ty, const CXXRecordDecl *RD)
Definition: CGCXX.cpp:258
clang::CodeGen::CodeGenFunction::enableDebugInfo
void enableDebugInfo()
Definition: CodeGenFunction.h:1603
clang::CodeGen::CodeGenModule::getCodeGenOpts
const CodeGenOptions & getCodeGenOpts() const
Definition: CodeGenModule.h:658
clang::CodeGen::CodeGenFunction::CGCoroInfo
Definition: CodeGenFunction.h:306
clang::CodeGen::VarBypassDetector
The class detects jumps which bypass local variables declaration: goto L; int a; L: ...
Definition: VarBypassDetector.h:40
clang::CodeGen::CodeGenFunction::CreateMemTemp
Address CreateMemTemp(QualType T, const Twine &Name="tmp", Address *Alloca=nullptr)
CreateMemTemp - Create a temporary memory object of the given type, with appropriate alignmen and cas...
Definition: CGExpr.cpp:139
CapturedStmt.h
clang::CodeGen::CodeGenFunction::enterFullExpression
void enterFullExpression(const FullExpr *E)
Definition: CodeGenFunction.h:3975
clang::CodeGen::AlignmentSource
AlignmentSource
The source of the alignment of an l-value; an expression of confidence in the alignment actually matc...
Definition: CGValue.h:126
clang::CodeGen::CodeGenFunction::HaveInsertPoint
bool HaveInsertPoint() const
HaveInsertPoint - True if an insertion point is defined.
Definition: CodeGenFunction.h:2078
clang::CodeGen::CodeGenFunction::isSEHTryScope
bool isSEHTryScope() const
Returns true inside SEH __try blocks.
Definition: CodeGenFunction.h:589
clang::CodeGen::CodeGenModule::getLLVMContext
llvm::LLVMContext & getLLVMContext()
Definition: CodeGenModule.h:670
clang::CodeGen::CodeGenFunction::BCK_CTZPassedZero
Definition: CodeGenFunction.h:4067
llvm
DominatorTree GraphTraits specialization so the DominatorTree can be iterable by generic graph iterat...
Definition: Dominators.h:30
clang::CodeGen::CodeGenFunction::FieldConstructionScope::FieldConstructionScope
FieldConstructionScope(CodeGenFunction &CGF, Address This)
Definition: CodeGenFunction.h:1403
clang::CoreturnStmt
Represents a &#39;co_return&#39; statement in the C++ Coroutines TS.
Definition: StmtCXX.h:435
clang::Stmt
Stmt - This represents one statement.
Definition: Stmt.h:66
VarBypassDetector.h
clang::IfStmt
IfStmt - This represents an if/then/else.
Definition: Stmt.h:1687
clang::CodeGen::CodeGenFunction::OMPTargetDataInfo
Definition: CodeGenFunction.h:3094
buildByrefHelpers
static T * buildByrefHelpers(CodeGenModule &CGM, const BlockByrefInfo &byrefInfo, T &&generator)
Lazily build the copy and dispose helpers for a __block variable with the given information.
Definition: CGBlocks.cpp:2592
clang::CodeGen::CodeGenFunction::RunCleanupsScope::requiresCleanups
bool requiresCleanups() const
Determine whether this scope requires any cleanups.
Definition: CodeGenFunction.h:735
Base
clang::CodeGen::CodeGenFunction::InlinedInheritingConstructorScope
Definition: CodeGenFunction.h:1454
Type.h
C Language Family Type Representation.
clang::CodeGen::CodeGenFunction::OpaqueValueMapping::OpaqueValueMapping
OpaqueValueMapping(CodeGenFunction &CGF, const AbstractConditionalOperator *op)
Build the opaque value mapping for the given conditional operator if it&#39;s the GNU ...
Definition: CodeGenFunction.h:1155
clang::OMPForSimdDirective
This represents &#39;#pragma omp for simd&#39; directive.
Definition: StmtOpenMP.h:1181
clang::CodeGen::CodeGenFunction::TCK_ConstructorCall
Checking the &#39;this&#39; pointer for a constructor call.
Definition: CodeGenFunction.h:2590
clang::RecordDecl::hasVolatileMember
bool hasVolatileMember() const
Definition: Decl.h:3677
clang::CodeGen::CodeGenFunction::hasLabelBeenSeenInCurrentScope
bool hasLabelBeenSeenInCurrentScope() const
Return true if a label was seen in the current scope.
Definition: CodeGenFunction.h:332
clang::CodeGen::DominatingValue< Address >::saved_type::Alignment
CharUnits Alignment
Definition: CodeGenFunction.h:177
clang::Decl
Decl - This represents one declaration (or definition), e.g.
Definition: DeclBase.h:87
clang::OMPTeamsDistributeParallelForDirective
This represents &#39;#pragma omp teams distribute parallel for&#39; composite directive.
Definition: StmtOpenMP.h:3659
clang::CodeGen::CodeGenFunction::CurCodeDecl
const Decl * CurCodeDecl
CurCodeDecl - This is the inner-most code context, which includes blocks.
Definition: CodeGenFunction.h:298
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::classof
static bool classof(const CGCapturedStmtInfo *)
Definition: CodeGenFunction.h:381
clang::AttributedStmt
Represents an attribute applied to a statement.
Definition: Stmt.h:1633
clang::CodeGen::CodeGenFunction::destroyARCStrongPrecise
static Destroyer destroyARCStrongPrecise
Definition: CodeGenFunction.h:3842
clang::CodeGen::CodeGenFunction::LoadCXXThis
llvm::Value * LoadCXXThis()
LoadCXXThis - Load the value of &#39;this&#39;.
Definition: CodeGenFunction.h:2428
clang::Type
The base class of the type hierarchy.
Definition: Type.h:1407
clang::OMPTargetTeamsDistributeDirective
This represents &#39;#pragma omp target teams distribute&#39; combined directive.
Definition: StmtOpenMP.h:3796
clang::ObjCAtThrowStmt
Represents Objective-C&#39;s @throw statement.
Definition: StmtObjC.h:313
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::CGCapturedStmtInfo
CGCapturedStmtInfo(const CapturedStmt &S, CapturedRegionKind K=CR_Default)
Definition: CodeGenFunction.h:347
clang::CodeGen::CodeGenFunction::CFITCK_UnrelatedCast
Definition: CodeGenFunction.h:1910
clang::CapturedStmt::getCapturedRecordDecl
const RecordDecl * getCapturedRecordDecl() const
Retrieve the record declaration for captured variables.
Definition: Stmt.h:3223
clang::ArrayType
Represents an array type, per C99 6.7.5.2 - Array Declarators.
Definition: Type.h:2812
clang::CodeGen::CodeGenFunction::SpecialInitFn
void SpecialInitFn(CodeGenFunction &Init, const VarDecl &D, llvm::Value *Address)
Definition: CodeGenFunction.h:2658
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::lookup
virtual const FieldDecl * lookup(const VarDecl *VD) const
Lookup the captured field decl for a variable.
Definition: CodeGenFunction.h:374
clang::CXXConstructExpr
Represents a call to a C++ constructor.
Definition: ExprCXX.h:1262
clang::CodeGen::InvariantValue::saved_type
T saved_type
Definition: EHScopeStack.h:58
clang::CharUnits::isZero
bool isZero() const
isZero - Test whether the quantity equals zero.
Definition: CharUnits.h:116
clang::CodeGen::EHScopeStack::stable_begin
stable_iterator stable_begin() const
Create a stable reference to the top of the EH stack.
Definition: EHScopeStack.h:379
clang::CodeGen::CodeGenFunction::saveValueInCond
DominatingValue< T >::saved_type saveValueInCond(T value)
Definition: CodeGenFunction.h:556
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::CGCapturedStmtInfo
CGCapturedStmtInfo(CapturedRegionKind K=CR_Default)
Definition: CodeGenFunction.h:345
clang::CodeGen::AlignmentSource::Decl
The l-value was an access to a declared entity or something equivalently strong, like the address of ...
clang::CodeGen::DominatingValue< RValue >::type
RValue type
Definition: CodeGenFunction.h:195
clang::CodeGen::CodeGenFunction::AbstractCallee::getParamDecl
const ParmVarDecl * getParamDecl(unsigned I) const
Definition: CodeGenFunction.h:442
clang::CodeGen::CodeGenFunction::currentFunctionUsesSEHTry
bool currentFunctionUsesSEHTry() const
Definition: CodeGenFunction.h:1636
clang::OMPParallelForDirective
This represents &#39;#pragma omp parallel for&#39; directive.
Definition: StmtOpenMP.h:1552
clang::CodeGen::CodeGenFunction::CFITCK_NVMFCall
Definition: CodeGenFunction.h:1912
clang::CodeGen::CodeGenPGO::emitCounterIncrement
void emitCounterIncrement(CGBuilderTy &Builder, const Stmt *S, llvm::Value *StepV)
Definition: CodeGenPGO.cpp:893
clang::OMPTargetTeamsDistributeParallelForDirective
This represents &#39;#pragma omp target teams distribute parallel for&#39; combined directive.
Definition: StmtOpenMP.h:3864
EHScopeStack.h
clang::CXXConstructorDecl
Represents a C++ constructor within a class.
Definition: DeclCXX.h:2484
clang::MaterializeTemporaryExpr
Represents a prvalue temporary that is written into memory so that a reference can bind to it...
Definition: ExprCXX.h:4156
clang::CodeGen::DominatingLLVMValue::needsSaving
static bool needsSaving(llvm::Value *value)
Answer whether the given value needs extra work to be saved.
Definition: CodeGenFunction.h:149
clang::CodeGen::DominatingPointer< T, true >::restore
static type restore(CodeGenFunction &CGF, saved_type value)
Definition: CodeGenFunction.h:166
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::bind
static OpaqueValueMappingData bind(CodeGenFunction &CGF, const OpaqueValueExpr *ov, const RValue &rv)
Definition: CodeGenFunction.h:1109
clang::LoopExit
Represents a point when we exit a loop.
Definition: ProgramPoint.h:715
Value
Value
Definition: UninitializedValues.cpp:102
clang::CodeGen::CodeGenFunction::destroyARCWeak
static Destroyer destroyARCWeak
Definition: CodeGenFunction.h:3843
clang::CastExpr::path_const_iterator
const CXXBaseSpecifier *const * path_const_iterator
Definition: Expr.h:3067
clang::OMPTargetExitDataDirective
This represents &#39;#pragma omp target exit data&#39; directive.
Definition: StmtOpenMP.h:2463
clang::CodeGen::CodeGenFunction::GetAddrOfLocalVar
Address GetAddrOfLocalVar(const VarDecl *VD)
GetAddrOfLocalVar - Return the address of a local variable.
Definition: CodeGenFunction.h:2344
clang::CodeGen::TypeEvaluationKind
TypeEvaluationKind
The kind of evaluation to perform on values of a particular type.
Definition: CodeGenFunction.h:105
clang::VarDecl
Represents a variable declaration or definition.
Definition: Decl.h:813
clang::CodeGen::CodeGenFunction::AutoVarEmission::getObjectAddress
Address getObjectAddress(CodeGenFunction &CGF) const
Returns the address of the object within this declaration.
Definition: CodeGenFunction.h:2734
clang::CodeGen::CodeGenFunction::VlaSizePair::VlaSizePair
VlaSizePair(llvm::Value *NE, QualType T)
Definition: CodeGenFunction.h:2411
clang::ObjCIsaExpr
ObjCIsaExpr - Represent X->isa and X.isa when X is an ObjC &#39;id&#39; type.
Definition: ExprObjC.h:1437
clang::CompoundLiteralExpr
CompoundLiteralExpr - [C99 6.5.2.5].
Definition: Expr.h:2925
clang::CodeGen::CodeGenFunction::SanitizerScope
RAII object to set/unset CodeGenFunction::IsSanitizerScope.
Definition: CodeGenFunction.h:456
clang::ast_matchers::expr
const internal::VariadicDynCastAllOfMatcher< Stmt, Expr > expr
Matches expressions.
Definition: ASTMatchersInternal.cpp:690
clang::Type::getAs
const T * getAs() const
Member-template getAs<specific type>&#39;.
Definition: Type.h:6748
clang::CodeGen::CodeGenFunction::getProfileCount
uint64_t getProfileCount(const Stmt *S)
Get the profiler&#39;s count for the given statement.
Definition: CodeGenFunction.h:1341
clang::CodeGen::CGDebugInfo
This class gathers all debug information during compilation and is responsible for emitting to llvm g...
Definition: CGDebugInfo.h:54
clang::ObjCMethodDecl
ObjCMethodDecl - Represents an instance or class method declaration.
Definition: DeclObjC.h:139
clang::CodeGen::CodeGenFunction::setCurrentProfileCount
void setCurrentProfileCount(uint64_t Count)
Set the profiler&#39;s current count.
Definition: CodeGenFunction.h:1349
clang::CodeGen::Address::getPointer
llvm::Value * getPointer() const
Definition: Address.h:38
clang::CodeGen::CodeGenFunction::shouldUseFusedARCCalls
bool shouldUseFusedARCCalls()
Definition: CodeGenFunction.h:1605
clang::CodeGen::CodeGenFunction::AutoVarEmission::useLifetimeMarkers
bool useLifetimeMarkers() const
Definition: CodeGenFunction.h:2713
clang::CodeGen::CodeGenFunction::ConstantEmission::forValue
static ConstantEmission forValue(llvm::Constant *C)
Definition: CodeGenFunction.h:3517
clang::CodeGen::CodeGenFunction::LifetimeExtendedCleanupHeader::getSize
size_t getSize() const
Definition: CodeGenFunction.h:518
clang::CapturedStmt::capture_begin
capture_iterator capture_begin()
Retrieve an iterator pointing to the first capture.
Definition: Stmt.h:3248
clang::CXXThrowExpr
A C++ throw-expression (C++ [except.throw]).
Definition: ExprCXX.h:1015
clang::ParmVarDecl
Represents a parameter to a function.
Definition: Decl.h:1550
clang::CodeGen::CodeGenFunction::AbstractCallee::hasFunctionDecl
bool hasFunctionDecl() const
Definition: CodeGenFunction.h:433
clang::Linkage
Linkage
Describes the different kinds of linkage (C++ [basic.link], C99 6.2.2) that an entity may have...
Definition: Linkage.h:24
ExprCXX.h
Defines the clang::Expr interface and subclasses for C++ expressions.
clang::CodeGen::CodeGenFunction::AbstractCallee::AbstractCallee
AbstractCallee(const ObjCMethodDecl *OMD)
Definition: CodeGenFunction.h:432
clang::CodeGen::CodeGenFunction::CGCapturedStmtRAII::~CGCapturedStmtRAII
~CGCapturedStmtRAII()
Definition: CodeGenFunction.h:421
clang::Qualifiers
The collection of all-type qualifiers we support.
Definition: Type.h:141
clang::CodeGen::CodeGenFunction::PrologueCleanupDepth
EHScopeStack::stable_iterator PrologueCleanupDepth
PrologueCleanupDepth - The cleanup depth enclosing all the cleanups associated with the parameters...
Definition: CodeGenFunction.h:322
clang::CodeGen::CodeGenFunction::JumpDest
A jump destination is an abstract label, branching to which may require a jump out through normal cle...
Definition: CodeGenFunction.h:235
clang::CodeGen::CodeGenFunction::CXXDefaultInitExprScope::~CXXDefaultInitExprScope
~CXXDefaultInitExprScope()
Definition: CodeGenFunction.h:1426
clang::CodeGen::TEK_Aggregate
Definition: CodeGenFunction.h:108
clang::LabelStmt
LabelStmt - Represents a label, which has a substatement.
Definition: Stmt.h:1593
clang::RecordDecl
Represents a struct/union/class.
Definition: Decl.h:3593
clang::CodeGen::CodeGenFunction::LambdaCaptureFields
llvm::DenseMap< const VarDecl *, FieldDecl * > LambdaCaptureFields
Definition: CodeGenFunction.h:483
clang::CodeGen::CodeGenFunction::MakeAddrLValue
LValue MakeAddrLValue(llvm::Value *V, QualType T, CharUnits Alignment, LValueBaseInfo BaseInfo, TBAAAccessInfo TBAAInfo)
Definition: CodeGenFunction.h:2116
clang::CodeGen::CodeGenFunction::getTarget
const TargetInfo & getTarget() const
Definition: CodeGenFunction.h:1638
clang::CodeGen::CodeGenFunction::ConditionalEvaluation
An object to manage conditionally-evaluated expressions.
Definition: CodeGenFunction.h:995
clang::CodeGen::CodeGenFunction::protectFromPeepholes
PeepholeProtection protectFromPeepholes(RValue rvalue)
protectFromPeepholes - Protect a value that we&#39;re intending to store to the side, but which will prob...
Definition: CodeGenFunction.cpp:2184
CGDebugInfo.h
clang::CodeGen::EHScopeStack::ConditionalCleanup
ConditionalCleanup stores the saved form of its parameters, then restores them and performs the clean...
Definition: EHScopeStack.h:198
clang::CodeGen::CodeGenFunction::ArrayInitLoopExprScope::ArrayInitLoopExprScope
ArrayInitLoopExprScope(CodeGenFunction &CGF, llvm::Value *Index)
Definition: CodeGenFunction.h:1441
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::unbind
void unbind(CodeGenFunction &CGF)
Definition: CodeGenFunction.h:1128
clang::CodeGen::CodeGenFunction::JumpDest::setScopeDepth
void setScopeDepth(EHScopeStack::stable_iterator depth)
Definition: CodeGenFunction.h:248
clang::OMPParallelDirective
This represents &#39;#pragma omp parallel&#39; directive.
Definition: StmtOpenMP.h:276
clang::CodeGen::CodeGenFunction::getDebugInfo
CGDebugInfo * getDebugInfo()
Definition: CodeGenFunction.h:1597
clang::CodeGen::CodeGenFunction
CodeGenFunction - This class organizes the per-function state that is used while generating LLVM code...
Definition: CodeGenFunction.h:227
clang::ASTContext
Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...
Definition: ASTContext.h:155
llvm::Optional
Definition: LLVM.h:38
clang::CodeGen::CodeGenFunction::VPtr::NearestVBase
const CXXRecordDecl * NearestVBase
Definition: CodeGenFunction.h:1880
clang::CodeGen::CodeGenFunction::ParamValue::getIndirectAddress
Address getIndirectAddress() const
Definition: CodeGenFunction.h:2779
clang::CodeGen::CodeGenFunction::LexicalScope::addLabel
void addLabel(const LabelDecl *label)
Definition: CodeGenFunction.h:776
clang::CodeGen::CodeGenFunction::AbstractCallee::AbstractCallee
AbstractCallee(const FunctionDecl *FD)
Definition: CodeGenFunction.h:431
clang::FullExpr
FullExpr - Represents a "full-expression" node.
Definition: Expr.h:877
clang::CodeGen::CodeGenFunction::VisitedVirtualBasesSetTy
llvm::SmallPtrSet< const CXXRecordDecl *, 4 > VisitedVirtualBasesSetTy
Definition: CodeGenFunction.h:1890
clang::CodeGen::TEK_Complex
Definition: CodeGenFunction.h:107
clang::CodeGen::CodeGenFunction::OMPPrivateScope
The scope used to remap some variables as private in the OpenMP loop body (or other captured region e...
Definition: CodeGenFunction.h:894
clang::CodeGen::CodeGenFunction::SEHCodeSlotStack
SmallVector< Address, 1 > SEHCodeSlotStack
A stack of exception code slots.
Definition: CodeGenFunction.h:545
clang::CodeGen::StructorType
StructorType
Definition: CodeGenTypes.h:58
clang::FieldDecl
Represents a member of a struct/union/class.
Definition: Decl.h:2579
clang::CodeGen::CodeGenFunction::RunCleanupsScope::PerformCleanup
bool PerformCleanup
Definition: CodeGenFunction.h:705
clang::SEHFinallyStmt
Definition: Stmt.h:2990
std
Definition: Format.h:2072
CGValue.h
clang::CodeGen::CodeGenFunction::OpaqueValueMapping
An RAII object to set (and then clear) a mapping for an OpaqueValueExpr.
Definition: CodeGenFunction.h:1141
clang::CodeGen::CodeGenFunction::LexicalScope::hasLabels
bool hasLabels() const
Definition: CodeGenFunction.h:805
clang::CodeGen::AggValueSlot::Overlap_t
Overlap_t
Definition: CGValue.h:493
clang::CodeGen::CodeGenFunction::CFITCK_ICall
Definition: CodeGenFunction.h:1911
clang::Type::isReferenceType
bool isReferenceType() const
Definition: Type.h:6308
clang::CodeGen::DominatingLLVMValue
Helper class with most of the code for saving a value for a conditional expression cleanup...
Definition: CodeGenFunction.h:145
clang::CodeGen::CodeGenFunction::ConditionalEvaluation::getStartingBlock
llvm::BasicBlock * getStartingBlock() const
Returns a block which will be executed prior to each evaluation of the conditional code...
Definition: CodeGenFunction.h:1016
clang::OMPTargetSimdDirective
This represents &#39;#pragma omp target simd&#39; directive.
Definition: StmtOpenMP.h:3384
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::setContextValue
virtual void setContextValue(llvm::Value *V)
Definition: CodeGenFunction.h:369
clang::OpaqueValueExpr::getSourceExpr
Expr * getSourceExpr() const
The source expression of an opaque value expression is the expression which originally generated the ...
Definition: Expr.h:1003
clang::CodeGen::CodeGenFunction::Builder
CGBuilderTy Builder
Definition: CodeGenFunction.h:263
clang::CodeGen::CleanupKind
CleanupKind
Definition: EHScopeStack.h:78
CodeGenPGO.h
OpenMPKinds.h
Defines some OpenMP-specific enums and functions.
clang::ExtVectorElementExpr
ExtVectorElementExpr - This represents access to specific elements of a vector, and may occur on the ...
Definition: Expr.h:5116
clang::CodeGen::CodeGenFunction::AutoVarEmission::getAllocatedAddress
Address getAllocatedAddress() const
Returns the raw, allocated address, which is not necessarily the address of the object itself...
Definition: CodeGenFunction.h:2724
clang::CodeGen::DominatingValue
A metaprogramming class for ensuring that a value will dominate an arbitrary position in a function...
Definition: EHScopeStack.h:66
clang::OMPBarrierDirective
This represents &#39;#pragma omp barrier&#39; directive.
Definition: StmtOpenMP.h:1883
clang::CodeGen::CodeGenFunction::getCleanupKind
CleanupKind getCleanupKind(QualType::DestructionKind kind)
Definition: CodeGenFunction.h:1704
clang::LangOptions
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:50
clang::ObjCArrayLiteral
ObjCArrayLiteral - used for objective-c array containers; as in: @["Hello", NSApp, [NSNumber numberWithInt:42]];.
Definition: ExprObjC.h:171
clang::ThunkInfo
The this pointer adjustment as well as an optional return adjustment for a thunk. ...
Definition: ABI.h:179
clang::OMPLoopDirective
This is a common base class for loop directives (&#39;omp simd&#39;, &#39;omp for&#39;, &#39;omp for simd&#39; etc...
Definition: StmtOpenMP.h:338
clang::SEHTryStmt
Definition: Stmt.h:3021
clang::OMPCriticalDirective
This represents &#39;#pragma omp critical&#39; directive.
Definition: StmtOpenMP.h:1478
clang::CR_Default
Definition: CapturedStmt.h:18
llvm::SmallVectorImpl
Definition: LLVM.h:37
clang::ast_matchers::complexType
const AstTypeMatcher< ComplexType > complexType
Matches C99 complex types.
Definition: ASTMatchersInternal.cpp:809
clang::CodeGen::CodeGenFunction::AbstractCallee::getNumParams
unsigned getNumParams() const
Definition: CodeGenFunction.h:437
clang::CodeGen::CodeGenFunction::isCleanupPadScope
bool isCleanupPadScope() const
Returns true while emitting a cleanuppad.
Definition: CodeGenFunction.h:592
clang::CodeGen::CodeGenFunction::EmitStoreOfScalar
void EmitStoreOfScalar(llvm::Value *Value, Address Addr, bool Volatile, QualType Ty, AlignmentSource Source=AlignmentSource::Type, bool isInit=false, bool isNontemporal=false)
EmitStoreOfScalar - Store a scalar value to an address, taking care to appropriately convert from the...
Definition: CodeGenFunction.h:3424
clang::CodeGen::CodeGenFunction::BCK_CLZPassedZero
Definition: CodeGenFunction.h:4068
clang::CodeGen::CodeGenFunction::EmitAnyExpr
RValue EmitAnyExpr(const Expr *E, AggValueSlot aggSlot=AggValueSlot::ignored(), bool ignoreResult=false)
EmitAnyExpr - Emit code to compute the specified expression which can have any type.
Definition: CGExpr.cpp:194
clang::CodeGen::CodeGenFunction::pushFullExprCleanup
void pushFullExprCleanup(CleanupKind kind, As... A)
pushFullExprCleanup - Push a cleanup to be run at the end of the current full-expression.
Definition: CodeGenFunction.h:600
clang::OpenMPDistScheduleClauseKind
OpenMPDistScheduleClauseKind
OpenMP attributes for &#39;dist_schedule&#39; clause.
Definition: OpenMPKinds.h:109
clang::Expr::isGLValue
bool isGLValue() const
Definition: Expr.h:252
clang::IndirectGotoStmt
IndirectGotoStmt - This represents an indirect goto.
Definition: Stmt.h:2339
clang::InitListExpr
Describes an C or C++ initializer list.
Definition: Expr.h:4185
CharUnits.h
clang::CXXTypeidExpr
A C++ typeid expression (C++ [expr.typeid]), which gets the type_info that corresponds to the supplie...
Definition: ExprCXX.h:669
clang::OMPDistributeParallelForDirective
This represents &#39;#pragma omp distribute parallel for&#39; composite directive.
Definition: StmtOpenMP.h:3099
clang::CodeGen::CodeGenPGO::setCurrentRegionCount
void setCurrentRegionCount(uint64_t Count)
Set the counter value for the current region.
Definition: CodeGenPGO.h:59
clang::CodeGen::CodeGenFunction::FinallyInfo
A class controlling the emission of a finally block.
Definition: CodeGenFunction.h:566
clang::OMPTeamsDistributeParallelForSimdDirective
This represents &#39;#pragma omp teams distribute parallel for simd&#39; composite directive.
Definition: StmtOpenMP.h:3588
clang::BinaryOperatorKind
BinaryOperatorKind
Definition: OperationKinds.h:26
clang::CodeGen::CodeGenFunction::hasScalarEvaluationKind
static bool hasScalarEvaluationKind(QualType T)
Definition: CodeGenFunction.h:2028
clang::CodeGen::CodeGenFunction::OpaqueValueMapping::pop
void pop()
Definition: CodeGenFunction.h:1189
clang::ForStmt
ForStmt - This represents a &#39;for (init;cond;inc)&#39; stmt.
Definition: Stmt.h:2237
clang::CodeGen::CodeGenFunction::InlinedInheritingConstructorScope::InlinedInheritingConstructorScope
InlinedInheritingConstructorScope(CodeGenFunction &CGF, GlobalDecl GD)
Definition: CodeGenFunction.h:1456
llvm::Expected
Definition: LLVM.h:39
clang::CodeGen::CodeGenFunction::MultiVersionResolverOption::MultiVersionResolverOption
MultiVersionResolverOption(llvm::Function *F, StringRef Arch, ArrayRef< StringRef > Feats)
Definition: CodeGenFunction.h:4313
clang::ObjCContainerDecl
ObjCContainerDecl - Represents a container for method declarations.
Definition: DeclObjC.h:969
clang::CharUnits
CharUnits - This is an opaque type for sizes expressed in character units.
Definition: CharUnits.h:38
clang::CodeGen::CodeGenFunction::CodeGenLoopBoundsTy
llvm::function_ref< std::pair< LValue, LValue > CodeGenFunction &, const OMPExecutableDirective &S)> CodeGenLoopBoundsTy
Definition: CodeGenFunction.h:280
clang::CodeGen::EHScopeStack::requiresLandingPad
bool requiresLandingPad() const
Definition: CGCleanup.cpp:159
clang::CodeGen::CodeGenFunction::CGCapturedStmtRAII::CGCapturedStmtRAII
CGCapturedStmtRAII(CodeGenFunction &CGF, CGCapturedStmtInfo *NewCapturedStmtInfo)
Definition: CodeGenFunction.h:416
clang::CodeGen::CodeGenFunction::StmtExprEvaluation::~StmtExprEvaluation
~StmtExprEvaluation()
Definition: CodeGenFunction.h:1048
clang::CodeGen::CodeGenFunction::LexicalScope::LexicalScope
LexicalScope(CodeGenFunction &CGF, SourceRange Range)
Enter a new cleanup scope.
Definition: CodeGenFunction.h:769
clang::CodeGen::CodeGenFunction::CGCapturedStmtRAII
RAII for correct setting/restoring of CapturedStmtInfo.
Definition: CodeGenFunction.h:411
clang::CodeGen::CodeGenModule::getTBAAAccessInfo
TBAAAccessInfo getTBAAAccessInfo(QualType AccessType)
getTBAAAccessInfo - Get TBAA information that describes an access to an object of the given type...
Definition: CodeGenModule.cpp:629
clang::CodeGen::Address::getAlignment
CharUnits getAlignment() const
Return the alignment of this pointer.
Definition: Address.h:67
clang::CodeGen::CodeGenFunction::CurrentCleanupScopeDepth
EHScopeStack::stable_iterator CurrentCleanupScopeDepth
Definition: CodeGenFunction.h:756
clang::TypeDecl
Represents a declaration of a type.
Definition: Decl.h:2874
clang::BinaryOperator
A builtin binary operation expression such as "x + y" or "x <= y".
Definition: Expr.h:3287
clang::CodeGen::CodeGenFunction::needsEHCleanup
bool needsEHCleanup(QualType::DestructionKind kind)
Determines whether an EH cleanup is required to destroy a type with the given destruction kind...
Definition: CodeGenFunction.h:1689
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::bind
static OpaqueValueMappingData bind(CodeGenFunction &CGF, const OpaqueValueExpr *ov, const LValue &lv)
Definition: CodeGenFunction.h:1101
clang::CodeGen::CodeGenFunction::OMPMapVars::restore
void restore(CodeGenFunction &CGF)
Restores original addresses of the variables.
Definition: CodeGenFunction.h:865
clang::CXXForRangeStmt
CXXForRangeStmt - This represents C++0x [stmt.ranged]&#39;s ranged for statement, represented as &#39;for (ra...
Definition: StmtCXX.h:127
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::isCXXThisExprCaptured
bool isCXXThisExprCaptured() const
Definition: CodeGenFunction.h:378
LIST_SANITIZER_CHECKS
#define LIST_SANITIZER_CHECKS
Definition: CodeGenFunction.h:111
ExprObjC.h
clang::SanitizerSet
Definition: Sanitizers.h:50
clang::OMPCancellationPointDirective
This represents &#39;#pragma omp cancellation point&#39; directive.
Definition: StmtOpenMP.h:2718
clang::ObjCStringLiteral
ObjCStringLiteral, used for Objective-C string literals i.e.
Definition: ExprObjC.h:51
clang::RecordDecl::field_begin
field_iterator field_begin() const
Definition: Decl.cpp:4145
clang::CaseStmt
CaseStmt - Represent a case statement.
Definition: Stmt.h:1394
clang::CodeGen::EHScopeStack
A stack of scopes which respond to exceptions, including cleanups and catch blocks.
Definition: EHScopeStack.h:100
clang::CodeGen::CodeGenFunction::createBasicBlock
llvm::BasicBlock * createBasicBlock(const Twine &name="", llvm::Function *parent=nullptr, llvm::BasicBlock *before=nullptr)
createBasicBlock - Create an LLVM basic block.
Definition: CodeGenFunction.h:2037
clang::OMPTeamsDirective
This represents &#39;#pragma omp teams&#39; directive.
Definition: StmtOpenMP.h:2661
clang::CodeGen::NormalCleanup
Denotes a cleanup that should run when a scope is exited using normal control flow (falling off the e...
Definition: EHScopeStack.h:85
ABI.h
Enums/classes describing ABI related information about constructors, destructors and thunks...
clang::CastExpr
CastExpr - Base class for type casts, including both implicit casts (ImplicitCastExpr) and explicit c...
Definition: Expr.h:2998
clang::OMPTeamsDistributeSimdDirective
This represents &#39;#pragma omp teams distribute simd&#39; combined directive.
Definition: StmtOpenMP.h:3518
clang::CodeGen::CodeGenFunction::RunCleanupsScope::ForceCleanup
void ForceCleanup(std::initializer_list< llvm::Value **> ValuesToReload={})
Force the emission of cleanups now, instead of waiting until this object is destroyed.
Definition: CodeGenFunction.h:745
clang::CXXBindTemporaryExpr
Represents binding an expression to a temporary.
Definition: ExprCXX.h:1217
clang::LambdaExpr
A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked l...
Definition: ExprCXX.h:1649
clang::CodeGen::CodeGenFunction::CurGD
GlobalDecl CurGD
CurGD - The GlobalDecl for the current function being compiled.
Definition: CodeGenFunction.h:318
clang::CodeGen::CodeGenFunction::OMPCancelStackRAII
Controls insertion of cancellation exit blocks in worksharing constructs.
Definition: CodeGenFunction.h:2944
clang::CodeGen::CodeGenFunction::incrementProfileCounter
void incrementProfileCounter(const Stmt *S, llvm::Value *StepV=nullptr)
Increment the profiler&#39;s counter for the given statement by StepV.
Definition: CodeGenFunction.h:1334
clang::CodeGen::CodeGenFunction::getCurrentProfileCount
uint64_t getCurrentProfileCount()
Get the profiler&#39;s current count.
Definition: CodeGenFunction.h:1355
clang::CodeGen::CodeGenFunction::CallLifetimeEnd::CallLifetimeEnd
CallLifetimeEnd(Address addr, llvm::Value *size)
Definition: CodeGenFunction.h:501
clang::CodeGen::CodeGenFunction::CodeGenDispatchBoundsTy
llvm::function_ref< std::pair< llvm::Value *, llvm::Value * > CodeGenFunction &, const OMPExecutableDirective &S, Address LB, Address UB)> CodeGenDispatchBoundsTy
Definition: CodeGenFunction.h:286
clang::CodeGen::CodeGenFunction::CreateTempAlloca
llvm::AllocaInst * CreateTempAlloca(llvm::Type *Ty, const Twine &Name="tmp", llvm::Value *ArraySize=nullptr)
CreateTempAlloca - This creates an alloca and inserts it into the entry block if ArraySize is nullptr...
Definition: CGExpr.cpp:106
clang::ObjCInterfaceDecl
Represents an ObjC class declaration.
Definition: DeclObjC.h:1172
clang::CodeGen::CodeGenFunction::TCK_UpcastToVirtualBase
Checking the operand of a cast to a virtual base object.
Definition: CodeGenFunction.h:2602
llvm::ArrayRef
Definition: LLVM.h:32
clang::CodeGen::CodeGenFunction::getJumpDestInCurrentScope
JumpDest getJumpDestInCurrentScope(StringRef Name=StringRef())
The given basic block lies in the current EH scope, but may be a target of a potentially scope-crossi...
Definition: CodeGenFunction.h:970
clang::CodeGen::CodeGenFunction::AbstractCallee::getDecl
const Decl * getDecl() const
Definition: CodeGenFunction.h:436
clang::CodeGen::CodeGenFunction::ConstantEmission::isReference
bool isReference() const
Definition: CodeGenFunction.h:3525
clang::CodeGen::CodeGenFunction::TCK_Load
Checking the operand of a load. Must be suitably sized and aligned.
Definition: CodeGenFunction.h:2576
clang::CodeGen::CodeGenFunction::ConditionalEvaluation::begin
void begin(CodeGenFunction &CGF)
Definition: CodeGenFunction.h:1002
clang::CodeGen::CodeGenFunction::LexicalScope::~LexicalScope
~LexicalScope()
Exit this cleanup scope, emitting any accumulated cleanups.
Definition: CodeGenFunction.h:783
clang::CodeGen::CodeGenFunction::TCK_MemberCall
Checking the &#39;this&#39; pointer for a call to a non-static member function.
Definition: CodeGenFunction.h:2588
clang::CodeGen::CodeGenFunction::EmitLoadOfScalar
llvm::Value * EmitLoadOfScalar(Address Addr, bool Volatile, QualType Ty, SourceLocation Loc, AlignmentSource Source=AlignmentSource::Type, bool isNontemporal=false)
EmitLoadOfScalar - Load a scalar value from an address, taking care to appropriately convert from the...
Definition: CodeGenFunction.h:3402
clang::ObjCPropertyImplDecl
ObjCPropertyImplDecl - Represents implementation declaration of a property in a class or category imp...
Definition: DeclObjC.h:2759
clang::OMPTargetParallelForSimdDirective
This represents &#39;#pragma omp target parallel for simd&#39; directive.
Definition: StmtOpenMP.h:3316
clang::OMPArraySectionExpr
OpenMP 4.0 [2.4, Array Sections].
Definition: ExprOpenMP.h:45
clang::Stmt::ConstExprIterator
Const iterator for iterating over Stmt * arrays that contain only Expr *.
Definition: Stmt.h:997
clang::CodeGen::Address::isValid
bool isValid() const
Definition: Address.h:36
clang::CXXPseudoDestructorExpr
Represents a C++ pseudo-destructor (C++ [expr.pseudo]).
Definition: ExprCXX.h:2286
clang::CompoundStmt
CompoundStmt - This represents a group of statements like { stmt stmt }.
Definition: Stmt.h:1241
clang::CodeGen::CodeGenFunction::ComplexPairTy
std::pair< llvm::Value *, llvm::Value * > ComplexPairTy
Definition: CodeGenFunction.h:261
clang::CodeGen::CodeGenFunction::getContext
ASTContext & getContext() const
Definition: CodeGenFunction.h:1596
clang::FunctionProtoType
Represents a prototype with parameter type info, e.g.
Definition: Type.h:3687
clang::CapturedStmt::Capture
Describes the capture of either a variable, or &#39;this&#39;, or variable-length array type.
Definition: Stmt.h:3118
clang::OMPTaskgroupDirective
This represents &#39;#pragma omp taskgroup&#39; directive.
Definition: StmtOpenMP.h:1971
clang::CodeGen::CodeGenModule::getTargetCodeGenInfo
const TargetCodeGenInfo & getTargetCodeGenInfo()
Definition: TargetInfo.cpp:9246
clang::CodeGen::CGBlockInfo
CGBlockInfo - Information to generate a block literal.
Definition: CGBlocks.h:153
clang::CodeGen::RValue
RValue - This trivial value class is used to represent the result of an expression that is evaluated...
Definition: CGValue.h:39
clang::CodeGen::CodeGenFunction::getARCCleanupKind
CleanupKind getARCCleanupKind()
Retrieves the default cleanup kind for an ARC cleanup.
Definition: CodeGenFunction.h:3780
clang::CodeGen::CodeGenFunction::AutoVarEmission::invalid
static AutoVarEmission invalid()
Definition: CodeGenFunction.h:2711
clang::CodeGen::CodeGenFunction::OMPPrivateScope::isGlobalVarCaptured
bool isGlobalVarCaptured(const VarDecl *VD) const
Checks if the global variable is captured in current function.
Definition: CodeGenFunction.h:936
clang::CodeGen::CodeGenFunction::OMPMapVars
The class used to assign some variables some temporarily addresses.
Definition: CodeGenFunction.h:815
clang::CodeGen::CodeGenFunction::EvaluationOrder
EvaluationOrder
Definition: CodeGenFunction.h:4210
clang::CharUnits::getQuantity
QuantityType getQuantity() const
getQuantity - Get the raw integer representation of this quantity.
Definition: CharUnits.h:179
clang::CodeGen::BlockFieldFlags
Definition: CGBlocks.h:110
clang::VAArgExpr
Represents a call to the builtin function __builtin_va_arg.
Definition: Expr.h:4091
clang::CodeGen::CodeGenFunction::OMPPrivateScope::ForceCleanup
void ForceCleanup()
Definition: CodeGenFunction.h:924
clang::CodeGen::CodeGenFunction::overlapForFieldInit
AggValueSlot::Overlap_t overlapForFieldInit(const FieldDecl *FD)
Determine whether a field initialization may overlap some other object.
Definition: CodeGenFunction.h:2306
clang::CodeGen::CodeGenFunction::pushCleanupAfterFullExpr
void pushCleanupAfterFullExpr(CleanupKind Kind, As... A)
Queue a cleanup to be pushed after finishing the current full-expression.
Definition: CodeGenFunction.h:618
clang::CodeGen::CodeGenFunction::MakeAddrLValue
LValue MakeAddrLValue(Address Addr, QualType T, LValueBaseInfo BaseInfo, TBAAAccessInfo TBAAInfo)
Definition: CodeGenFunction.h:2105
clang::OMPDistributeDirective
This represents &#39;#pragma omp distribute&#39; directive.
Definition: StmtOpenMP.h:2972
clang::TargetInfo
Exposes information about the current target.
Definition: TargetInfo.h:54
clang::CodeGen::CodeGenFunction::MultiVersionResolverOption::Conds::Features
llvm::SmallVector< StringRef, 8 > Features
Definition: CodeGenFunction.h:4307
clang::CXXDtorType
CXXDtorType
C++ destructor types.
Definition: ABI.h:34
clang::CodeGen::CodeGenFunction::OMPPrivateScope::addPrivate
bool addPrivate(const VarDecl *LocalVD, const llvm::function_ref< Address()> PrivateGen)
Registers LocalVD variable as a private and apply PrivateGen function for it to generate correspondin...
Definition: CodeGenFunction.h:908
clang::CodeGen::CodeGenFunction::JumpDest::getScopeDepth
EHScopeStack::stable_iterator getScopeDepth() const
Definition: CodeGenFunction.h:244
clang::ValueDecl
Represent the declaration of a variable (in which case it is an lvalue) a function (in which case it ...
Definition: Decl.h:637
clang::Expr
This represents one expression.
Definition: Expr.h:106
clang::CodeGen::CodeGenFunction::AutoVarEmission::getOriginalAllocatedAddress
Address getOriginalAllocatedAddress() const
Returns the address for the original alloca instruction.
Definition: CodeGenFunction.h:2729
CodeGenModule.h
clang::CodeGen::EHScopeStack::getInnermostNormalCleanup
stable_iterator getInnermostNormalCleanup() const
Returns the innermost normal cleanup on the stack, or stable_end() if there are no normal cleanups...
Definition: EHScopeStack.h:356
clang::CodeGen::CodeGenFunction::LoopStack
LoopInfoStack LoopStack
Definition: CodeGenFunction.h:262
clang::CodeGen::CodeGenFunction::RunCleanupsScope
Enters a new scope for capturing cleanups, all of which will be executed once the scope is exited...
Definition: CodeGenFunction.h:700
clang::CodeGen::CodeGenFunction::CodeGenOrderedTy
llvm::function_ref< void(CodeGenFunction &, SourceLocation, const unsigned, const bool)> CodeGenOrderedTy
Definition: CodeGenFunction.h:275
clang::CodeGen::CodeGenFunction::ParamValue::forIndirect
static ParamValue forIndirect(Address addr)
Definition: CodeGenFunction.h:2766
clang::CodeGen::CodeGenFunction::OpaqueValueMapping::OpaqueValueMapping
OpaqueValueMapping(CodeGenFunction &CGF, const OpaqueValueExpr *opaqueValue, RValue rvalue)
Definition: CodeGenFunction.h:1183
clang::CodeGen::CodeGenFunction::EmitCallArgs
void EmitCallArgs(CallArgList &Args, const T *CallArgTypeInfo, llvm::iterator_range< CallExpr::const_arg_iterator > ArgRange, AbstractCallee AC=AbstractCallee(), unsigned ParamsToSkip=0, EvaluationOrder Order=EvaluationOrder::Default)
EmitCallArgs - Emit call arguments for a function.
Definition: CodeGenFunction.h:4221
clang::CodeGen::CodeGenFunction::VlaSizePair::NumElts
llvm::Value * NumElts
Definition: CodeGenFunction.h:2408
clang::CodeGen::CodeGenFunction::JumpDest::getBlock
llvm::BasicBlock * getBlock() const
Definition: CodeGenFunction.h:243
clang::CodeGen::CodeGenFunction::LexicalScope::ForceCleanup
void ForceCleanup()
Force the emission of cleanups now, instead of waiting until this object is destroyed.
Definition: CodeGenFunction.h:797
clang::CodeGen::CodeGenFunction::isObjCMethodWithTypeParams
static bool isObjCMethodWithTypeParams(const ObjCMethodDecl *method)
Definition: CodeGenFunction.h:4193
clang::CodeGen::DominatingValue< Address >::type
Address type
Definition: CodeGenFunction.h:173
clang::BlockExpr
BlockExpr - Adaptor class for mixing a BlockDecl with expressions.
Definition: Expr.h:5177
clang::CXXDestructorDecl
Represents a C++ destructor within a class.
Definition: DeclCXX.h:2706
clang::OMPTargetTeamsDistributeParallelForSimdDirective
This represents &#39;#pragma omp target teams distribute parallel for simd&#39; combined directive.
Definition: StmtOpenMP.h:3948
clang::CodeGen::DominatingValue< Address >::save
static saved_type save(CodeGenFunction &CGF, type value)
Definition: CodeGenFunction.h:183
clang::CodeGen::CodeGenFunction::CreateAggTemp
AggValueSlot CreateAggTemp(QualType T, const Twine &Name="tmp")
CreateAggTemp - Create a temporary memory object for the given aggregate type.
Definition: CodeGenFunction.h:2233
bool
#define bool
Definition: stdbool.h:31
clang::CodeGen::CodeGenFunction::LifetimeExtendedCleanupHeader::Kind
unsigned Kind
The kind of cleanup to push: a value from the CleanupKind enumeration.
Definition: CodeGenFunction.h:514
clang::CodeGen::CodeGenFunction::LifetimeExtendedCleanupHeader::Size
unsigned Size
The size of the following cleanup object.
Definition: CodeGenFunction.h:512
clang::ObjCDictionaryLiteral
ObjCDictionaryLiteral - AST node to represent objective-c dictionary literals; as in:"name" : NSUserN...
Definition: ExprObjC.h:288
clang::Decl::getDeclContext
DeclContext * getDeclContext()
Definition: DeclBase.h:427
clang::CodeGen::DominatingValue< RValue >::needsSaving
static bool needsSaving(type value)
Definition: CodeGenFunction.h:214
clang::ObjCAtSynchronizedStmt
Represents Objective-C&#39;s @synchronized statement.
Definition: StmtObjC.h:262
clang::ObjCSelectorExpr
ObjCSelectorExpr used for @selector in Objective-C.
Definition: ExprObjC.h:429
clang::CodeGen::CodeGenFunction::MultiVersionResolverOption::Conds::Architecture
StringRef Architecture
Definition: CodeGenFunction.h:4306
clang::CXXTryStmt
CXXTryStmt - A C++ try block, including all handlers.
Definition: StmtCXX.h:65
clang::CodeGen::CodeGenFunction::OMPPrivateScope::~OMPPrivateScope
~OMPPrivateScope()
Exit scope - all the mapped variables are restored.
Definition: CodeGenFunction.h:930
clang::OMPTargetTeamsDistributeSimdDirective
This represents &#39;#pragma omp target teams distribute simd&#39; combined directive.
Definition: StmtOpenMP.h:4021
Depth
int Depth
Definition: ASTDiff.cpp:191
clang::ast_matchers::arrayType
const AstTypeMatcher< ArrayType > arrayType
Matches all kinds of arrays.
Definition: ASTMatchersInternal.cpp:808
clang::CodeGen::CodeGenFunction::getLLVMContext
llvm::LLVMContext & getLLVMContext()
Definition: CodeGenFunction.h:1639
clang::CodeGen::CodeGenFunction::CXXDefaultInitExprScope::OldCXXThisValue
llvm::Value * OldCXXThisValue
Definition: CodeGenFunction.h:1433
clang::Expr::getType
QualType getType() const
Definition: Expr.h:128
clang::CodeGen::CodeGenFunction::TCK_NonnullAssign
Checking the value assigned to a _Nonnull pointer. Must not be null.
Definition: CodeGenFunction.h:2604
clang::CodeGen::CodeGenFunction::StmtExprEvaluation
An RAII object to record that we&#39;re evaluating a statement expression.
Definition: CodeGenFunction.h:1034
clang::OMPForDirective
This represents &#39;#pragma omp for&#39; directive.
Definition: StmtOpenMP.h:1104
clang::BaseSubobject
Definition: BaseSubobject.h:31
clang::CodeGen::CodeGenFunction::JumpDest::isValid
bool isValid() const
Definition: CodeGenFunction.h:242
clang::CodeGen::CodeGenFunction::ArrayInitLoopExprScope::~ArrayInitLoopExprScope
~ArrayInitLoopExprScope()
Definition: CodeGenFunction.h:1445
clang::ReturnStmt
ReturnStmt - This represents a return, optionally of an expression: return; return 4;...
Definition: Stmt.h:2443
clang::OMPTargetTeamsDirective
This represents &#39;#pragma omp target teams&#39; directive.
Definition: StmtOpenMP.h:3737
clang::CodeGen::CodeGenFunction::MakeNaturalAlignAddrLValue
LValue MakeNaturalAlignAddrLValue(llvm::Value *V, QualType T)
Definition: CodeGenFunction.cpp:164
clang::ObjCMessageExpr
An expression that sends a message to the given Objective-C object or class.
Definition: ExprObjC.h:904
clang::CodeGen::CodeGenFunction::CFITypeCheckKind
CFITypeCheckKind
Definition: CodeGenFunction.h:1906
clang::CodeGen::CodeGenFunction::JumpDest::JumpDest
JumpDest(llvm::BasicBlock *Block, EHScopeStack::stable_iterator Depth, unsigned Index)
Definition: CodeGenFunction.h:237
clang::SourceRange::getEnd
SourceLocation getEnd() const
Definition: SourceLocation.h:208
clang::CodeGen::CodeGenFunction::PeepholeProtection
An object which temporarily prevents a value from being destroyed by aggressive peephole optimization...
Definition: CodeGenFunction.h:1057
clang::UnaryOperator
UnaryOperator - This represents the unary-expression&#39;s (except sizeof and alignof), the postinc/postdec operators from postfix-expression, and various extensions.
Definition: Expr.h:1896
CanThrow
static bool CanThrow(Expr *E, ASTContext &Ctx)
Definition: CFG.cpp:2407
clang::CodeGen::CodeGenFunction::CallLifetimeEnd
Definition: CodeGenFunction.h:496
clang::CodeGen::CodeGenFunction::CXXDefaultInitExprScope
The scope of a CXXDefaultInitExpr.
Definition: CodeGenFunction.h:1418
clang::CodeGen::CodeGenFunction::OMPTargetDataInfo::OMPTargetDataInfo
OMPTargetDataInfo(Address BasePointersArray, Address PointersArray, Address SizesArray, unsigned NumberOfTargetItems)
Definition: CodeGenFunction.h:3100
clang::DefaultStmt
Definition: Stmt.h:1544
clang::OMPCancelDirective
This represents &#39;#pragma omp cancel&#39; directive.
Definition: StmtOpenMP.h:2776
clang::CodeGen::CodeGenFunction::RunCleanupsScope::RunCleanupsScope
RunCleanupsScope(CodeGenFunction &CGF)
Enter a new cleanup scope.
Definition: CodeGenFunction.h:716
clang::CodeGen::CodeGenModule::getLangOpts
const LangOptions & getLangOpts() const
Definition: CodeGenModule.h:653
clang::CodeGen::CodeGenModule::getContext
ASTContext & getContext() const
Definition: CodeGenModule.h:652
v
do v
Definition: arm_acle.h:78
clang::CodeGen::CodeGenFunction::MultiVersionResolverOption::Conds::Conds
Conds(StringRef Arch, ArrayRef< StringRef > Feats)
Definition: CodeGenFunction.h:4309
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::shouldBindAsLValue
static bool shouldBindAsLValue(const Expr *expr)
Definition: CodeGenFunction.h:1082
clang::VarDecl::getCanonicalDecl
VarDecl * getCanonicalDecl() override
Retrieves the "canonical" declaration of the given declaration.
Definition: Decl.cpp:2026
clang::TargetInfo::ConstraintInfo
Definition: TargetInfo.h:795
clang::GlobalDecl
GlobalDecl - represents a global declaration.
Definition: GlobalDecl.h:35
clang::OMPFlushDirective
This represents &#39;#pragma omp flush&#39; directive.
Definition: StmtOpenMP.h:2044
clang::OMPParallelForSimdDirective
This represents &#39;#pragma omp parallel for simd&#39; directive.
Definition: StmtOpenMP.h:1632
clang::CodeGen::CodeGenFunction::ParamValue::isIndirect
bool isIndirect() const
Definition: CodeGenFunction.h:2771
clang::CodeGen::CodeGenFunction::CurCoro
CGCoroInfo CurCoro
Definition: CodeGenFunction.h:311
clang::DoStmt
DoStmt - This represents a &#39;do/while&#39; stmt.
Definition: Stmt.h:2185
clang::AsmStmt
AsmStmt is the base class for GCCAsmStmt and MSAsmStmt.
Definition: Stmt.h:2520
clang::CodeGen::CodeGenFunction::Bypasses
VarBypassDetector Bypasses
Definition: CodeGenFunction.h:267
clang::CodeGen::CodeGenFunction::PopCleanupBlocks
void PopCleanupBlocks(EHScopeStack::stable_iterator OldCleanupStackSize, std::initializer_list< llvm::Value **> ValuesToReload={})
Takes the old cleanup stack size and emits the cleanup blocks that have been added.
Definition: CGCleanup.cpp:424
clang::CodeGen::CodeGenFunction::CodeGenLoopTy
llvm::function_ref< void(CodeGenFunction &, const OMPLoopDirective &, JumpDest)> CodeGenLoopTy
Definition: CodeGenFunction.h:272
clang::OMPTargetEnterDataDirective
This represents &#39;#pragma omp target enter data&#39; directive.
Definition: StmtOpenMP.h:2404
clang::CodeGen::CodeGenFunction::CFITCK_VCall
Definition: CodeGenFunction.h:1907
clang::CodeGen::CodeGenFunction::OMPPrivateScope::OMPPrivateScope
OMPPrivateScope(CodeGenFunction &CGF)
Enter a new OpenMP private scope.
Definition: CodeGenFunction.h:901
clang::CodeGen::CodeGenFunction::ArrayInitLoopExprScope
The scope of an ArrayInitLoopExpr.
Definition: CodeGenFunction.h:1439
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::getContextValue
virtual llvm::Value * getContextValue() const
Definition: CodeGenFunction.h:371
clang::CodeGen::DominatingValue< Address >::needsSaving
static bool needsSaving(type value)
Definition: CodeGenFunction.h:180
clang::CodeGen::CodeGenFunction::VPtrsVector
llvm::SmallVector< VPtr, 4 > VPtrsVector
Definition: CodeGenFunction.h:1888
clang::CXXDynamicCastExpr
A C++ dynamic_cast expression (C++ [expr.dynamic.cast]).
Definition: ExprCXX.h:362
clang::OpaqueValueExpr
OpaqueValueExpr - An expression referring to an opaque object of a fixed type and value class...
Definition: Expr.h:945
false
#define false
Definition: stdbool.h:33
MSVCIntrin
MSVCIntrin
Definition: CGBuiltin.cpp:810
Kind
Kind
Definition: ChrootChecker.cpp:29
clang::CapturedStmt
This captures a statement into a function.
Definition: Stmt.h:3105
clang::CXXInheritedCtorInitExpr
Represents a call to an inherited base class constructor from an inheriting constructor.
Definition: ExprCXX.h:1448
CGLoopInfo.h
clang::PseudoObjectExpr
PseudoObjectExpr - An expression which accesses a pseudo-object l-value.
Definition: Expr.h:5299
clang::CodeGen::CodeGenFunction::initFullExprCleanup
void initFullExprCleanup()
Set up the last cleanup that was pushed as a conditional full-expression cleanup. ...
Definition: CodeGenFunction.h:655
clang::CodeGen::CodeGenFunction::FieldConstructionScope::~FieldConstructionScope
~FieldConstructionScope()
Definition: CodeGenFunction.h:1407
clang::CodeGen::CodeGenFunction::MultiVersionResolverOption
Definition: CodeGenFunction.h:4302
clang::OMPSingleDirective
This represents &#39;#pragma omp single&#39; directive.
Definition: StmtOpenMP.h:1376
clang::SourceLocation
Encodes a location in the source.
Definition: SourceLocation.h:88
clang::CodeGen::CodeGenFunction::EnsureInsertPoint
void EnsureInsertPoint()
EnsureInsertPoint - Ensure that an insertion point is defined so that emitted IR has a place to go...
Definition: CodeGenFunction.h:2086
clang::CodeGen::EHScopeStack::stable_iterator
A saved depth on the scope stack.
Definition: EHScopeStack.h:107
clang::CodeGen::CodeGenFunction::CGCoroInfo::Data
std::unique_ptr< CGCoroData > Data
Definition: CodeGenFunction.h:307
clang::CXXTemporary
Represents a C++ temporary.
Definition: ExprCXX.h:1185
clang::CodeGen::CodeGenFunction::RunCleanupsScope::~RunCleanupsScope
~RunCleanupsScope()
Exit this cleanup scope, emitting any accumulated cleanups.
Definition: CodeGenFunction.h:729
clang::CodeGen::CodeGenFunction::getUnreachableBlock
llvm::BasicBlock * getUnreachableBlock()
Definition: CodeGenFunction.h:1623
clang::CodeGen::CodeGenFunction::overlapForReturnValue
AggValueSlot::Overlap_t overlapForReturnValue()
Determine whether a return value slot may overlap some other object.
Definition: CodeGenFunction.h:2298
clang::CodeGen::CodeGenFunction::setBeforeOutermostConditional
void setBeforeOutermostConditional(llvm::Value *value, Address addr)
Definition: CodeGenFunction.h:1025
clang::OMPExecutableDirective
This is a basic class for representing single OpenMP executable directive.
Definition: StmtOpenMP.h:33
clang::CodeGen::CodeGenFunction::ObjCEHValueStack
SmallVector< llvm::Value *, 8 > ObjCEHValueStack
ObjCEHValueStack - Stack of Objective-C exception values, used for rethrows.
Definition: CodeGenFunction.h:563
clang::CXXNewExpr
Represents a new-expression for memory allocation and constructor calls, e.g: "new CXXNewExpr(foo)"...
Definition: ExprCXX.h:1914
clang::CXXMemberCallExpr
Represents a call to a member function that may be written either with member call syntax (e...
Definition: ExprCXX.h:171
clang::SEHExceptStmt
Definition: Stmt.h:2950
clang::GlobalDecl::getDecl
const Decl * getDecl() const
Definition: GlobalDecl.h:69
clang::DeclStmt
DeclStmt - Adaptor class for mixing declarations with statements and expressions. ...
Definition: Stmt.h:1143
clang::CodeGen::CodeGenFunction::TCK_Upcast
Checking the operand of a cast to a base object.
Definition: CodeGenFunction.h:2599
clang::OpenMPDirectiveKind
OpenMPDirectiveKind
OpenMP directives.
Definition: OpenMPKinds.h:23
clang::LabelDecl
Represents the declaration of a label.
Definition: Decl.h:469
clang::CodeGen::CodeGenFunction::ConstantEmission::ConstantEmission
ConstantEmission()
Definition: CodeGenFunction.h:3513
clang::CodeGen::AggValueSlot
An aggregate value slot.
Definition: CGValue.h:437
clang::CodeGen::CodeGenFunction::CXXDefaultInitExprScope::OldCXXThisAlignment
CharUnits OldCXXThisAlignment
Definition: CodeGenFunction.h:1434
clang::CodeGen::ApplyDebugLocation
A scoped helper to set the current debug location to the specified location or preferred location of ...
Definition: CGDebugInfo.h:684
clang::CodeGen::CodeGenPGO
Per-function PGO state.
Definition: CodeGenPGO.h:28
clang::CXXMethodDecl
Represents a static or instance method of a struct/union/class.
Definition: DeclCXX.h:2041
clang::CodeGen::CodeGenFunction::EmitStmt
void EmitStmt(const Stmt *S, ArrayRef< const Attr *> Attrs=None)
EmitStmt - Emit the code for the statement.
Definition: CGStmt.cpp:46
clang::CodeGen::CodeGenFunction::OpaqueValueMapping::~OpaqueValueMapping
~OpaqueValueMapping()
Definition: CodeGenFunction.h:1194
clang::CodeGen::DominatingValue< RValue >::restore
static type restore(CodeGenFunction &CGF, saved_type value)
Definition: CodeGenFunction.h:220
clang::CodeGen::CodeGenFunction::JumpDest::getDestIndex
unsigned getDestIndex() const
Definition: CodeGenFunction.h:245
Modifier
OpenMPLinearClauseKind Modifier
Modifier of &#39;linear&#39; clause.
Definition: OpenMPClause.h:102
clang::NestedNameSpecifier
Represents a C++ nested name specifier, such as "\::std::vector<int>::".
Definition: NestedNameSpecifier.h:49
clang::CodeGen::CodeGenFunction::OMPCancelStackRAII::~OMPCancelStackRAII
~OMPCancelStackRAII()
Definition: CodeGenFunction.h:2953
clang::OMPTaskwaitDirective
This represents &#39;#pragma omp taskwait&#39; directive.
Definition: StmtOpenMP.h:1927
clang::CodeGen::CodeGenFunction::SanOpts
SanitizerSet SanOpts
Sanitizers enabled for this function.
Definition: CodeGenFunction.h:450
clang::ObjCCategoryDecl
ObjCCategoryDecl - Represents a category declaration.
Definition: DeclObjC.h:2280
clang::CodeGen::CodeGenFunction::ConstantEmission
Definition: CodeGenFunction.h:3508
clang::OMPClause
This is a basic class for representing single OpenMP clause.
Definition: OpenMPClause.h:51
clang::AtomicExpr
AtomicExpr - Variadic atomic builtins: __atomic_exchange, __atomic_fetch_*, __atomic_load, __atomic_store, and __atomic_compare_exchange_*, for the similarly-named C++11 instructions, and __c11 variants for <stdatomic.h>, and corresponding __opencl_atomic_* for OpenCL 2.0.
Definition: Expr.h:5433
clang::ObjCProtocolExpr
ObjCProtocolExpr used for protocol expression in Objective-C.
Definition: ExprObjC.h:474
llvm::SmallVector< char, 256 >
clang::CodeGen::CodeGenFunction::TypeCheckKind
TypeCheckKind
Situations in which we might emit a check for the suitability of a pointer or glvalue.
Definition: CodeGenFunction.h:2574
clang::CodeGen::CodeGenFunction::VlaSizePair::Type
QualType Type
Definition: CodeGenFunction.h:2409
clang::CodeGen::Address
An aligned address.
Definition: Address.h:25
clang::CodeGen::CodeGenFunction::CFITCK_VMFCall
Definition: CodeGenFunction.h:1913
clang::OMPTargetDirective
This represents &#39;#pragma omp target&#39; directive.
Definition: StmtOpenMP.h:2288
clang::CodeGen::CodeGenFunction::emitARCIntrinsicUse
static Destroyer emitARCIntrinsicUse
Definition: CodeGenFunction.h:3844
clang::CodeGen::CodeGenFunction::JumpDest::JumpDest
JumpDest()
Definition: CodeGenFunction.h:236
clang::CodeGen::CGCallee
All available information about a concrete callee.
Definition: CGCall.h:67
clang::CodeGen::CodeGenFunction::MakeAddrLValue
LValue MakeAddrLValue(llvm::Value *V, QualType T, CharUnits Alignment, AlignmentSource Source=AlignmentSource::Type)
Definition: CodeGenFunction.h:2110
clang::CodeGen::CodeGenFunction::getJumpDestInCurrentScope
JumpDest getJumpDestInCurrentScope(llvm::BasicBlock *Target)
The given basic block lies in the current EH scope, but may be a target of a potentially scope-crossi...
Definition: CodeGenFunction.h:961
clang::CodeGen::DominatingPointer
Definition: EHScopeStack.h:72
ExprOpenMP.h
clang::CodeGen::TargetCodeGenInfo
TargetCodeGenInfo - This class organizes various target-specific codegeneration issues, like target-specific attributes, builtins and so on.
Definition: TargetInfo.h:46
clang::CodeGen::CodeGenFunction::TCK_MemberAccess
Checking the object expression in a non-static data member access.
Definition: CodeGenFunction.h:2585
clang::OMPOrderedDirective
This represents &#39;#pragma omp ordered&#39; directive.
Definition: StmtOpenMP.h:2099
clang::StmtExpr
StmtExpr - This is the GNU Statement Expression extension: ({int X=4; X;}).
Definition: Expr.h:3801
clang::CodeGen::CodeGenFunction::EmitAggregateAssign
void EmitAggregateAssign(LValue Dest, LValue Src, QualType EltTy)
Emit an aggregate assignment.
Definition: CodeGenFunction.h:2322
clang::CodeGen::CodeGenFunction::ParamValue::forDirect
static ParamValue forDirect(llvm::Value *value)
Definition: CodeGenFunction.h:2763
clang::CodeGen::LValue::getType
QualType getType() const
Definition: CGValue.h:264
clang::OMPTargetUpdateDirective
This represents &#39;#pragma omp target update&#39; directive.
Definition: StmtOpenMP.h:3040
clang::ObjCBoxedExpr
ObjCBoxedExpr - used for generalized expression boxing.
Definition: ExprObjC.h:117
clang::CodeGen::CodeGenPGO::getCurrentRegionCount
uint64_t getCurrentRegionCount() const
Return the counter value of the current region.
Definition: CodeGenPGO.h:54
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::getThisFieldDecl
virtual FieldDecl * getThisFieldDecl() const
Definition: CodeGenFunction.h:379
clang::CodeGen::CodeGenFunction::ParamValue::getDirectValue
llvm::Value * getDirectValue() const
Definition: CodeGenFunction.h:2774
clang::CodeGen::CodeGenFunction::CurFnInfo
const CGFunctionInfo * CurFnInfo
Definition: CodeGenFunction.h:299
clang::CodeGen::CodeGenFunction::MultiVersionResolverOption::FD
FunctionDecl * FD
Definition: CodeGenFunction.h:4304
clang::CodeGen::CodeGenFunction::CallLifetimeEnd::Emit
void Emit(CodeGenFunction &CGF, Flags flags) override
Emit the cleanup.
Definition: CodeGenFunction.h:504
clang::CodeGen::CodeGenFunction::ConstantEmission::forReference
static ConstantEmission forReference(llvm::Constant *C)
Definition: CodeGenFunction.h:3514
clang::QualType::DestructionKind
DestructionKind
Definition: Type.h:1140
clang::CodeGen::CodeGenFunction::getTargetHooks
const TargetCodeGenInfo & getTargetHooks() const
Definition: CodeGenFunction.h:1640
clang::CodeGen::CodeGenFunction::destroyARCStrongImprecise
static Destroyer destroyARCStrongImprecise
Definition: CodeGenFunction.h:3841
clang::CodeGen::CodeGenFunction::GuardKind
GuardKind
Definition: CodeGenFunction.h:3944
clang::CXXCtorType
CXXCtorType
C++ constructor types.
Definition: ABI.h:25
clang::CompoundAssignOperator
CompoundAssignOperator - For compound assignments (e.g.
Definition: Expr.h:3504
clang::ImplicitParamDecl
Definition: Decl.h:1486
clang::CodeGen::CodeGenFunction::getOMPCancelDestination
JumpDest getOMPCancelDestination(OpenMPDirectiveKind Kind)
Definition: CGStmtOpenMP.cpp:4515
clang::CodeGen::FunctionArgList
FunctionArgList - Type for representing both the decl and type of parameters to a function...
Definition: CGCall.h:356
clang::CodeGen::CodeGenFunction::EHStack
EHScopeStack EHStack
Definition: CodeGenFunction.h:490
clang::BinaryConditionalOperator::getOpaqueValue
OpaqueValueExpr * getOpaqueValue() const
getOpaqueValue - Return the opaque value placeholder.
Definition: Expr.h:3698
clang::CodeGen::CGFunctionInfo
CGFunctionInfo - Class to encapsulate the information about a function definition.
Definition: CGFunctionInfo.h:493
clang::CodeGen::CodeGenModule
This class organizes the cross-function state that is used while generating LLVM code.
Definition: CodeGenModule.h:274
clang::CodeGen::CodeGenFunction::RunCleanupsScope::CGF
CodeGenFunction & CGF
Definition: CodeGenFunction.h:712
Type
Optional< types::ID > Type
Definition: InterpolatingCompilationDatabase.cpp:128
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:22
clang::CodeGen::RegionCodeGenTy
Class provides a way to call simple version of codegen for OpenMP region, or an advanced with possibl...
Definition: CGOpenMPRuntime.h:65
clang::PredefinedExpr
[C99 6.4.2.2] - A predefined identifier such as func.
Definition: Expr.h:1758
clang::DeclContext
DeclContext - This is used only as base class of specific decl types that can act as declaration cont...
Definition: DeclBase.h:1262
clang::CodeGen::CodeGenFunction::OpaqueValueMapping::shouldBindAsLValue
static bool shouldBindAsLValue(const Expr *expr)
Definition: CodeGenFunction.h:1146
clang::StructuralEquivalenceKind::Default
clang::CodeGen::CodeGenFunction::FnRetTy
QualType FnRetTy
Definition: CodeGenFunction.h:300
clang::CodeGen::CodeGenFunction::LexicalScope
Definition: CodeGenFunction.h:759
clang::CXXDeleteExpr
Represents a delete expression for memory deallocation and destructor calls, e.g. ...
Definition: ExprCXX.h:2170
clang::OMPSectionDirective
This represents &#39;#pragma omp section&#39; directive.
Definition: StmtOpenMP.h:1314
clang::OMPTeamsDistributeDirective
This represents &#39;#pragma omp teams distribute&#39; directive.
Definition: StmtOpenMP.h:3450
clang::CodeGen::CodeGenFunction::FieldConstructionScope
A scope within which we are constructing the fields of an object which might use a CXXDefaultInitExpr...
Definition: CodeGenFunction.h:1401
clang::index::SymbolKind::Module
CodeGenOptions.h
clang::CodeGen::CGBuilderTy::CreateAlignedLoad
llvm::LoadInst * CreateAlignedLoad(llvm::Value *Addr, CharUnits Align, const llvm::Twine &Name="")
Definition: CGBuilder.h:91
type
clang::CodeGen::SanitizerHandler
SanitizerHandler
Definition: CodeGenFunction.h:137
clang::CodeGen::CodeGenFunction::TCK_ReferenceBinding
Checking the bound value in a reference binding.
Definition: CodeGenFunction.h:2582
clang::CodeGen::CodeGenFunction::isInConditionalBranch
bool isInConditionalBranch() const
isInConditionalBranch - Return true if we&#39;re currently emitting one branch or the other of a conditio...
Definition: CodeGenFunction.h:1023
clang::OMPSimdDirective
This represents &#39;#pragma omp simd&#39; directive.
Definition: StmtOpenMP.h:1039
clang::CoyieldExpr
Represents a &#39;co_yield&#39; expression.
Definition: ExprCXX.h:4502
clang::CodeGen::CodeGenFunction::ParamValue::getAnyValue
llvm::Value * getAnyValue() const
Definition: CodeGenFunction.h:2772
clang::CodeGen::CodeGenFunction::StmtExprEvaluation::StmtExprEvaluation
StmtExprEvaluation(CodeGenFunction &CGF)
Definition: CodeGenFunction.h:1043
clang::CodeGen::CodeGenFunction::LifetimeExtendedCleanupHeader
Header for data within LifetimeExtendedCleanupStack.
Definition: CodeGenFunction.h:510
clang::CodeGen::CodeGenFunction::TCK_Store
Checking the destination of a store. Must be suitably sized and aligned.
Definition: CodeGenFunction.h:2578
clang::MemberPointerType
A pointer to member type per C++ 8.3.3 - Pointers to members.
Definition: Type.h:2756
clang::CodeGen::CodeGenFunction::LifetimeExtendedCleanupStack
llvm::SmallVector< char, 256 > LifetimeExtendedCleanupStack
Definition: CodeGenFunction.h:491
clang::CodeGen::CGBuilderTy::CreateStore
llvm::StoreInst * CreateStore(llvm::Value *Val, Address Addr, bool IsVolatile=false)
Definition: CGBuilder.h:108
clang::CodeGen::CodeGenFunction::PeepholeProtection::PeepholeProtection
PeepholeProtection()
Definition: CodeGenFunction.h:1062
clang::OMPAtomicDirective
This represents &#39;#pragma omp atomic&#39; directive.
Definition: StmtOpenMP.h:2154
clang::CodeGen::CodeGenFunction::MakeAddrLValue
LValue MakeAddrLValue(Address Addr, QualType T, AlignmentSource Source=AlignmentSource::Type)
Definition: CodeGenFunction.h:2099
clang::CodeGenOptions::hasProfileClangInstr
bool hasProfileClangInstr() const
Check if Clang profile instrumenation is on.
Definition: CodeGenOptions.h:310
clang::DeclContext::specific_decl_iterator
specific_decl_iterator - Iterates over a subrange of declarations stored in a DeclContext, providing only those that are of type SpecificDecl (or a class derived from it).
Definition: DeclBase.h:2017
clang::SEHLeaveStmt
Represents a __leave statement.
Definition: Stmt.h:3070
clang::CodeGen::CodeGenFunction::ReturnBlock
JumpDest ReturnBlock
ReturnBlock - Unified return block.
Definition: CodeGenFunction.h:325
clang::CodeGen::CodeGenFunction::DeclMapTy
llvm::DenseMap< const Decl *, Address > DeclMapTy
Definition: CodeGenFunction.h:812
clang::CodeGen::CodeGenFunction::TCK_DowncastReference
Checking the operand of a static_cast to a derived reference type.
Definition: CodeGenFunction.h:2596
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::getHelperName
virtual StringRef getHelperName() const
Get the name of the capture helper.
Definition: CodeGenFunction.h:392
clang::CodeGen::CodeGenFunction::hasAggregateEvaluationKind
static bool hasAggregateEvaluationKind(QualType T)
Definition: CodeGenFunction.h:2032
clang::SanitizerMask
uint64_t SanitizerMask
Definition: Sanitizers.h:26
clang::SwitchStmt
SwitchStmt - This represents a &#39;switch&#39; stmt.
Definition: Stmt.h:1886
clang::ObjCImplementationDecl
ObjCImplementationDecl - Represents a class definition - this is where method definitions are specifi...
Definition: DeclObjC.h:2552
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo
API for captured statement code generation.
Definition: CodeGenFunction.h:343
clang::CodeGen::DominatingValue< RValue >::save
static saved_type save(CodeGenFunction &CGF, type value)
Definition: CodeGenFunction.h:217
clang::CodeGen::CodeGenFunction::isObjCMethodWithTypeParams
static bool isObjCMethodWithTypeParams(const T *)
Definition: CodeGenFunction.h:4207
clang::CoroutineBodyStmt
Represents the body of a coroutine.
Definition: StmtCXX.h:302
clang::RecordType
A helper class that allows the use of isa/cast/dyncast to detect TagType objects of structs/unions/cl...
Definition: Type.h:4370
clang::CodeGen::CodeGenFunction::ConvertType
llvm::Type * ConvertType(const TypeDecl *T)
Definition: CodeGenFunction.h:2014
clang::CodeGen::CodeGenFunction::MultiVersionResolverOption::Conds
Definition: CodeGenFunction.h:4305
clang::CodeGen::CodeGenFunction::TCK_DowncastPointer
Checking the operand of a static_cast to a derived pointer type.
Definition: CodeGenFunction.h:2593
clang::ArraySubscriptExpr
ArraySubscriptExpr - [C99 6.5.2.1] Array Subscripting.
Definition: Expr.h:2312
clang::CodeGen::CodeGenFunction::VPtr::OffsetFromNearestVBase
CharUnits OffsetFromNearestVBase
Definition: CodeGenFunction.h:1881
clang::ObjCForCollectionStmt
Represents Objective-C&#39;s collection statement.
Definition: StmtObjC.h:24
clang::CodeGen::CodeGenFunction::getTypes
CodeGenTypes & getTypes() const
Definition: CodeGenFunction.h:1595
clang::AbstractConditionalOperator
AbstractConditionalOperator - An abstract base class for ConditionalOperator and BinaryConditionalOpe...
Definition: Expr.h:3540
clang::CodeGen::CGCXXABI
Implements C++ ABI-specific code generation functions.
Definition: CGCXXABI.h:44
clang::analyze_os_log::OSLogBufferLayout
Definition: OSLog.h:112
clang::ObjCEncodeExpr
ObjCEncodeExpr, used for @encode in Objective-C.
Definition: ExprObjC.h:386
clang::Decl::getAttr
T * getAttr() const
Definition: DeclBase.h:527
clang::CodeGen::LoopInfoStack
A stack of loop information corresponding to loop nesting levels.
Definition: CGLoopInfo.h:110
clang::CodeGen::CodeGenTypes
This class organizes the cross-module state that is used while lowering AST types to LLVM types...
Definition: CodeGenTypes.h:119
clang::CUDAKernelCallExpr
Represents a call to a CUDA kernel function.
Definition: ExprCXX.h:219
clang::Type::isFunctionType
bool isFunctionType() const
Definition: Type.h:6292
clang::CoawaitExpr
Represents a &#39;co_await&#39; expression.
Definition: ExprCXX.h:4419
clang::CodeGen::CodeGenFunction::Target
const TargetInfo & Target
Definition: CodeGenFunction.h:259
clang::CodeGen::CodeGenFunction::AllocaInsertPt
llvm::AssertingVH< llvm::Instruction > AllocaInsertPt
AllocaInsertPoint - This is an instruction in the entry block before which we prefer to insert alloca...
Definition: CodeGenFunction.h:340
clang::CodeGen::EHScopeStack::pushCleanupTuple
void pushCleanupTuple(CleanupKind Kind, std::tuple< As... > A)
Push a lazily-created cleanup on the stack. Tuple version.
Definition: EHScopeStack.h:283
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::OpaqueValueMappingData
OpaqueValueMappingData()
Definition: CodeGenFunction.h:1080
clang::CodeGen::CodeGenFunction::CFITCK_NVCall
Definition: CodeGenFunction.h:1908
clang::CodeGen::CodeGenFunction::OMPMapVars::setVarAddr
bool setVarAddr(CodeGenFunction &CGF, const VarDecl *LocalVD, Address TempAddr)
Sets the address of the variable LocalVD to be TempAddr in function CGF.
Definition: CodeGenFunction.h:830
clang::CodeGen::CodeGenFunction::EmitBlock
void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false)
EmitBlock - Emit the given block.
Definition: CGStmt.cpp:443
clang::CodeGen::CodeGenFunction::destroyNonTrivialCStruct
static Destroyer destroyNonTrivialCStruct
Definition: CodeGenFunction.h:3845
clang::APValue
APValue - This class implements a discriminated union of [uninitialized] [APSInt] [APFloat]...
Definition: APValue.h:38
clang::CodeGen::CodeGenFunction::AutoVarEmission
Definition: CodeGenFunction.h:2670
clang::CodeGen::CodeGenFunction::LoadCXXVTT
llvm::Value * LoadCXXVTT()
LoadCXXVTT - Load the VTT parameter to base constructors/destructors have virtual bases...
Definition: CodeGenFunction.h:2438
clang::CodeGen::ARCPreciseLifetime_t
ARCPreciseLifetime_t
Does an ARC strong l-value have precise lifetime?
Definition: CGValue.h:120
clang::ObjCIvarRefExpr
ObjCIvarRefExpr - A reference to an ObjC instance variable.
Definition: ExprObjC.h:513
clang::CodeGen::CodeGenFunction::CurFuncDecl
const Decl * CurFuncDecl
CurFuncDecl - Holds the Decl for the current outermost non-closure context.
Definition: CodeGenFunction.h:296
clang::CodeGen::BlockByrefHelpers
A pair of helper functions for a __block variable.
Definition: CodeGenModule.h:243
clang::CodeGen::CodeGenFunction::VPtr::Base
BaseSubobject Base
Definition: CodeGenFunction.h:1879
clang::GotoStmt
GotoStmt - This represents a direct goto.
Definition: Stmt.h:2304
clang::CodeGen::DominatingValue< Address >::saved_type::SavedValue
DominatingLLVMValue::saved_type SavedValue
Definition: CodeGenFunction.h:176
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::bind
static OpaqueValueMappingData bind(CodeGenFunction &CGF, const OpaqueValueExpr *ov, const Expr *e)
Definition: CodeGenFunction.h:1093
X
X
Add a minimal nested name specifier fixit hint to allow lookup of a tag name from an outer enclosing ...
Definition: SemaDecl.cpp:13954
clang::CodeGen::CodeGenPGO::setCurrentStmt
void setCurrentStmt(const Stmt *S)
If the execution count for the current statement is known, record that as the current count...
Definition: CodeGenPGO.h:74
clang::CodeGen::CodeGenFunction::NRVOFlags
llvm::DenseMap< const VarDecl *, llvm::Value * > NRVOFlags
A mapping from NRVO variables to the flags used to indicate when the NRVO has been applied to this va...
Definition: CodeGenFunction.h:488
clang::MemberExpr
MemberExpr - [C99 6.5.2.3] Structure and Union Members.
Definition: Expr.h:2682
clang::CodeGen::CodeGenFunction::unprotectFromPeepholes
void unprotectFromPeepholes(PeepholeProtection protection)
Definition: CodeGenFunction.cpp:2203
clang::CodeGen::EHScopeStack::Cleanup::Flags
Generation flags.
Definition: EHScopeStack.h:160
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData
A non-RAII class containing all the information about a bound opaque value.
Definition: CodeGenFunction.h:1071
clang::CodeGen::CodeGenFunction::isCoroutine
bool isCoroutine() const
Definition: CodeGenFunction.h:313
clang::OMPTargetParallelDirective
This represents &#39;#pragma omp target parallel&#39; directive.
Definition: StmtOpenMP.h:2521
clang::CXXRecordDecl
Represents a C++ struct/union/class.
Definition: DeclCXX.h:300
clang::ContinueStmt
ContinueStmt - This represents a continue.
Definition: Stmt.h:2384
clang::CodeGen::CodeGenFunction::EmitBranch
void EmitBranch(llvm::BasicBlock *Block)
EmitBranch - Emit a branch to the specified basic block from the current insert block, taking care to avoid creation of branches from dummy blocks.
Definition: CGStmt.cpp:463
clang::CodeGen::CodeGenFunction::EmitAggregateCopyCtor
void EmitAggregateCopyCtor(LValue Dest, LValue Src, AggValueSlot::Overlap_t MayOverlap)
Definition: CodeGenFunction.h:2327
clang::CodeGen::NormalAndEHCleanup
Definition: EHScopeStack.h:87
clang::CodeGen::DominatingLLVMValue::saved_type
llvm::PointerIntPair< llvm::Value *, 1, bool > saved_type
Definition: CodeGenFunction.h:146
clang::CodeGen::CodeGenFunction::getInvokeDest
llvm::BasicBlock * getInvokeDest()
Definition: CodeGenFunction.h:1631
clang::BinaryConditionalOperator
BinaryConditionalOperator - The GNU extension to the conditional operator which allows the middle ope...
Definition: Expr.h:3655
clang::CodeGen::CodeGenFunction::destroyCXXObject
static Destroyer destroyCXXObject
Definition: CodeGenFunction.h:2541
clang::CodeGen::CodeGenFunction::EmitLoadOfReferenceLValue
LValue EmitLoadOfReferenceLValue(Address RefAddr, QualType RefTy, AlignmentSource Source=AlignmentSource::Type)
Definition: CodeGenFunction.h:2136
clang::QualType::getQualifiers
Qualifiers getQualifiers() const
Retrieve the set of qualifiers applied to this type.
Definition: Type.h:6099
clang::CodeGen::ConstantAddress
A specialization of Address that requires the address to be an LLVM Constant.
Definition: Address.h:75
clang::CodeGen::CodeGenFunction::ParamValue
Definition: CodeGenFunction.h:2758
clang::ObjCIvarDecl
ObjCIvarDecl - Represents an ObjC instance variable.
Definition: DeclObjC.h:1945
clang::CodeGen::DominatingValue< Address >::restore
static type restore(CodeGenFunction &CGF, saved_type value)
Definition: CodeGenFunction.h:187
clang::CodeGen::CodeGenFunction::BuiltinCheckKind
BuiltinCheckKind
Specifies which type of sanitizer check to apply when handling a particular builtin.
Definition: CodeGenFunction.h:4066
clang::WhileStmt
WhileStmt - This represents a &#39;while&#39; stmt.
Definition: Stmt.h:2063
clang::CodeGen::CodeGenFunction::EmitLValue
LValue EmitLValue(const Expr *E)
EmitLValue - Emit code to compute a designator that specifies the location of the expression...
Definition: CGExpr.cpp:1236
clang::CodeGen::CodeGenFunction::ReturnValue
Address ReturnValue
ReturnValue - The temporary alloca to hold the return value.
Definition: CodeGenFunction.h:329
clang::CodeGen::CodeGenFunction::OMPCancelStackRAII::OMPCancelStackRAII
OMPCancelStackRAII(CodeGenFunction &CGF, OpenMPDirectiveKind Kind, bool HasCancel)
Definition: CodeGenFunction.h:2948
clang::diag::kind
unsigned kind
All of the diagnostics that can be emitted by the frontend.
Definition: DiagnosticIDs.h:61
clang::CodeGen::CallArg
Definition: CGCall.h:215
clang::ObjCAtTryStmt
Represents Objective-C&#39;s @try ... @catch ... @finally statement.
Definition: StmtObjC.h:154
clang::CapturedStmt::capture_end
capture_iterator capture_end() const
Retrieve an iterator pointing past the end of the sequence of captures.
Definition: Stmt.h:3253
clang::SanitizerSet::has
bool has(SanitizerMask K) const
Check if a certain (single) sanitizer is enabled.
Definition: Sanitizers.h:52
clang::OMPTaskLoopSimdDirective
This represents &#39;#pragma omp taskloop simd&#39; directive.
Definition: StmtOpenMP.h:2906
clang::CodeGen::CodeGenFunction::MultiVersionResolverOption::Function
llvm::Function * Function
Definition: CodeGenFunction.h:4303
clang::StringLiteral
StringLiteral - This represents a string literal expression, e.g.
Definition: Expr.h:1566
TargetInfo.h
Defines the clang::TargetInfo interface.
clang::CodeGen::CodeGenFunction::CGCapturedStmtInfo::getKind
CapturedRegionKind getKind() const
Definition: CodeGenFunction.h:367
clang::CallExpr
CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
Definition: Expr.h:2396
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::clear
void clear()
Definition: CodeGenFunction.h:1126
clang::CodeGen::CodeGenFunction::CapturedStmtInfo
CGCapturedStmtInfo * CapturedStmtInfo
Definition: CodeGenFunction.h:408
clang::CodeGen::CodeGenFunction::AutoVarEmission::getSizeForLifetimeMarkers
llvm::Value * getSizeForLifetimeMarkers() const
Definition: CodeGenFunction.h:2716
clang::CodeGen::CodeGenFunction::pushCleanupAfterFullExprImpl
void pushCleanupAfterFullExprImpl(CleanupKind Kind, Address ActiveFlag, As... A)
Definition: CodeGenFunction.h:634
clang::CodeGen::TBAAAccessInfo
Definition: CodeGenTBAA.h:43
clang::CodeGen::CodeGenFunction::EmitCall
RValue EmitCall(const CGFunctionInfo &CallInfo, const CGCallee &Callee, ReturnValueSlot ReturnValue, const CallArgList &Args, llvm::Instruction **callOrInvoke=nullptr)
Definition: CodeGenFunction.h:3584
clang::CodeGen::CodeGenFunction::TaskGenTy
const llvm::function_ref< void(CodeGenFunction &, llvm::Value *, const OMPTaskDataTy &)> TaskGenTy
Definition: CodeGenFunction.h:3089
clang::OMPSectionsDirective
This represents &#39;#pragma omp sections&#39; directive.
Definition: StmtOpenMP.h:1246
clang::CodeGen::CodeGenFunction::VPtr
Struct with all information about dynamic [sub]class needed to set vptr.
Definition: CodeGenFunction.h:1878
clang::CodeGen::CodeGenFunction::hasVolatileMember
bool hasVolatileMember(QualType T)
hasVolatileMember - returns true if aggregate type has a volatile member.
Definition: CodeGenFunction.h:2289
clang::OMPTargetDataDirective
This represents &#39;#pragma omp target data&#39; directive.
Definition: StmtOpenMP.h:2346
clang::CodeGen::CodeGenFunction::LifetimeExtendedCleanupHeader::isConditional
bool isConditional() const
Definition: CodeGenFunction.h:520
clang::DeclRefExpr
A reference to a declared variable, function, enum, etc.
Definition: Expr.h:1041
CGBuilder.h
clang::CodeGen::DominatingPointer< T, true >::type
T * type
Definition: CodeGenFunction.h:165
clang::CodeGen::CodeGenFunction::ConditionalEvaluation::ConditionalEvaluation
ConditionalEvaluation(CodeGenFunction &CGF)
Definition: CodeGenFunction.h:999
clang::CodeGen::CodeGenTypeCache
This structure provides a set of types that are commonly used during IR emission. ...
Definition: CodeGenTypeCache.h:33
clang::BreakStmt
BreakStmt - This represents a break.
Definition: Stmt.h:2410
clang::CodeGen::CodeGenFunction::EmitLifetimeEnd
void EmitLifetimeEnd(llvm::Value *Size, llvm::Value *Addr)
Definition: CGDecl.cpp:1225
clang::CodeGen::TEK_Scalar
Definition: CodeGenFunction.h:106
clang::CapturedRegionKind
CapturedRegionKind
The different kinds of captured statement.
Definition: CapturedStmt.h:17
clang::CodeGen::CodeGenFunction::EmitBranchThroughCleanup
void EmitBranchThroughCleanup(JumpDest Dest)
EmitBranchThroughCleanup - Emit a branch from the current insert block through the normal cleanup han...
Definition: CGCleanup.cpp:1050
clang::CodeGen::LValueBaseInfo
Definition: CGValue.h:150
clang::CodeGen::CodeGenFunction::VPtr::VTableClass
const CXXRecordDecl * VTableClass
Definition: CodeGenFunction.h:1882
clang::ValueDecl::getType
QualType getType() const
Definition: Decl.h:648
clang::CodeGen::CGBuilderTy
Definition: CGBuilder.h:45
true
#define true
Definition: stdbool.h:32
clang::CodeGen::CodeGenFunction::AbstractCallee::AbstractCallee
AbstractCallee()
Definition: CodeGenFunction.h:430
clang::SourceRange
A trivial tuple used to represent a source range.
Definition: SourceLocation.h:198
clang::CodeGen::LValue
LValue - This represents an lvalue references.
Definition: CGValue.h:167
clang::CodeGen::CodeGenFunction::AbstractCallee
An abstract representation of regular/ObjC call/message targets.
Definition: CodeGenFunction.h:425
clang::OMPTaskyieldDirective
This represents &#39;#pragma omp taskyield&#39; directive.
Definition: StmtOpenMP.h:1839
clang::CodeGen::EHScopeStack::Cleanup
Information for lazily generating a cleanup.
Definition: EHScopeStack.h:147
clang::CodeGen::CodeGenFunction::CGM
CodeGenModule & CGM
Definition: CodeGenFunction.h:258
clang::NamedDecl
This represents a decl that may have a name.
Definition: Decl.h:249
clang::OMPDistributeParallelForSimdDirective
This represents &#39;#pragma omp distribute parallel for simd&#39; composite directive.
Definition: StmtOpenMP.h:3179
clang::VariableArrayType
Represents a C array with a specified size that is not an integer-constant-expression.
Definition: Type.h:2971
clang::OMPParallelSectionsDirective
This represents &#39;#pragma omp parallel sections&#39; directive.
Definition: StmtOpenMP.h:1700
clang::CXXUuidofExpr
A Microsoft C++ __uuidof expression, which gets the _GUID that corresponds to the supplied type or ex...
Definition: ExprCXX.h:887
clang::CodeGen::CodeGenFunction::getLangOpts
const LangOptions & getLangOpts() const
Definition: CodeGenFunction.h:1609
clang::BinaryConditionalOperator::getCommon
Expr * getCommon() const
getCommon - Return the common expression, written to the left of the condition.
Definition: Expr.h:3695
clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::isValid
bool isValid() const
Definition: CodeGenFunction.h:1125
clang::CodeGen::CodeGenFunction::OMPMapVars::apply
bool apply(CodeGenFunction &CGF)
Applies new addresses to the list of the variables.
Definition: CodeGenFunction.h:858
clang::SourceRange::getBegin
SourceLocation getBegin() const
Definition: SourceLocation.h:207
clang::CodeGen::CallArgList
CallArgList - Type for representing both the value and type of arguments in a call.
Definition: CGCall.h:260
clang::CodeGen::CodeGenFunction::OpaqueValueMapping::OpaqueValueMapping
OpaqueValueMapping(CodeGenFunction &CGF, const OpaqueValueExpr *opaqueValue, LValue lvalue)
Definition: CodeGenFunction.h:1177
clang::ObjCAutoreleasePoolStmt
Represents Objective-C&#39;s @autoreleasepool Statement.
Definition: StmtObjC.h:345
clang::CodeGen::CodeGenFunction::OpaqueValueMapping::OpaqueValueMapping
OpaqueValueMapping(CodeGenFunction &CGF, const OpaqueValueExpr *OV)
Build the opaque value mapping for an OpaqueValueExpr whose source expression is set to the expressio...
Definition: CodeGenFunction.h:1168
clang::CodeGen::CodeGenFunction::emitBlockByrefAddress
Address emitBlockByrefAddress(Address baseAddr, const VarDecl *V, bool followForward=true)
BuildBlockByrefAddress - Computes the location of the data in a variable which is declared as __block...
Definition: CGBlocks.cpp:2702
clang::VarDecl::isLocalVarDeclOrParm
bool isLocalVarDeclOrParm() const
Similar to isLocalVarDecl but also includes parameters.
Definition: Decl.h:1114
clang::OMPTargetParallelForDirective
This represents &#39;#pragma omp target parallel for&#39; directive.
Definition: StmtOpenMP.h:2581
clang::CodeGen::CodeGenFunction::SEHTryEpilogueStack
llvm::SmallVector< const JumpDest *, 2 > SEHTryEpilogueStack
Definition: CodeGenFunction.h:492
clang::Create
static OMPLinearClause * Create(const ASTContext &C, SourceLocation StartLoc, SourceLocation LParenLoc, OpenMPLinearClauseKind Modifier, SourceLocation ModifierLoc, SourceLocation ColonLoc, SourceLocation EndLoc, ArrayRef< Expr *> VL, ArrayRef< Expr *> PL, ArrayRef< Expr *> IL, Expr *Step, Expr *CalcStep, Stmt *PreInit, Expr *PostUpdate)
Creates clause with a list of variables VL and a linear step Step.
clang::CodeGen::CodeGenFunction::OMPPrivateScope::Privatize
bool Privatize()
Privatizes local variables previously registered as private.
Definition: CodeGenFunction.h:922
clang::CodeGen::CodeGenFunction::Destroyer
void Destroyer(CodeGenFunction &CGF, Address addr, QualType ty)
Definition: CodeGenFunction.h:1648
clang::CodeGen::CodeGenFunction::OMPMapVars::~OMPMapVars
~OMPMapVars()
Definition: CodeGenFunction.h:823
clang::CodeGen::CodeGenFunction::LifetimeExtendedCleanupHeader::IsConditional
unsigned IsConditional
Whether this is a conditional cleanup.
Definition: CodeGenFunction.h:516
clang::OMPTaskLoopDirective
This represents &#39;#pragma omp taskloop&#39; directive.
Definition: StmtOpenMP.h:2841