19 #include "llvm/ADT/StringExtras.h" 20 #include "llvm/IR/Intrinsics.h" 21 #include "llvm/IR/MDBuilder.h" 22 #include "llvm/Support/Path.h" 24 using namespace clang;
25 using namespace CodeGen;
32 "VarDecl must have global or local (in the case of OpenCL) storage!");
34 "Should not call EmitDeclInit on a reference!");
63 llvm_unreachable(
"bad evaluation kind");
97 assert(!D.
getTLSKind() &&
"should have rejected this");
101 llvm::Constant *Func;
102 llvm::Constant *Argument;
109 bool CanRegisterDestructor =
117 if (Record && (CanRegisterDestructor || UsingExternalHelper)) {
122 Argument = llvm::ConstantExpr::getBitCast(
130 Argument = llvm::Constant::getNullValue(CGF.
Int8PtrTy);
139 llvm::Constant *Addr) {
153 llvm::Constant *InvariantStart =
CGM.
getIntrinsic(InvStartID, ObjectPtr);
158 llvm::ConstantExpr::getBitCast(Addr,
Int8PtrTy)};
159 Builder.CreateCall(InvariantStart, Args);
163 llvm::Constant *DeclPtr,
185 unsigned ActualAddrSpace = DeclPtr->getType()->getPointerAddressSpace();
186 if (ActualAddrSpace != ExpectedAddrSpace) {
188 llvm::PointerType *PTy = llvm::PointerType::get(LTy, ExpectedAddrSpace);
189 DeclPtr = llvm::ConstantExpr::getAddrSpaceCast(DeclPtr, PTy);
196 D.
hasAttr<OMPThreadPrivateDeclAttr>()) {
198 &D, DeclAddr, D.
getAttr<OMPThreadPrivateDeclAttr>()->getLocation(),
210 assert(PerformInit &&
"cannot have constant initializer which needs " 211 "destruction for reference");
219 llvm::Constant *dtor,
220 llvm::Constant *addr) {
222 llvm::FunctionType *ty = llvm::FunctionType::get(
CGM.
VoidTy,
false);
225 llvm::raw_svector_ostream Out(FnName);
238 llvm::CallInst *call = CGF.
Builder.CreateCall(dtor, addr);
241 if (llvm::Function *dtorFn =
242 dyn_cast<llvm::Function>(dtor->stripPointerCasts()))
243 call->setCallingConv(dtorFn->getCallingConv());
252 llvm::Constant *dtor,
253 llvm::Constant *addr) {
261 llvm::FunctionType *atexitTy =
262 llvm::FunctionType::get(
IntTy, dtorStub->getType(),
false);
264 llvm::Constant *atexit =
267 if (llvm::Function *atexitFn = dyn_cast<llvm::Function>(atexit))
268 atexitFn->setDoesNotThrow();
274 llvm::GlobalVariable *DeclPtr,
281 "this initialization requires a guard variable, which " 282 "the kernel does not support");
288 llvm::BasicBlock *InitBlock,
289 llvm::BasicBlock *NoInitBlock,
296 static const uint64_t InitsPerTLSVar = 1024;
297 static const uint64_t InitsPerLocalVar = 1024 * 1024;
299 llvm::MDNode *Weights;
311 NumInits = InitsPerTLSVar;
313 NumInits = InitsPerLocalVar;
318 Weights = MDHelper.createBranchWeights(1, NumInits - 1);
321 Builder.CreateCondBr(NeedsInit, InitBlock, NoInitBlock, Weights);
325 llvm::FunctionType *FTy,
const Twine &Name,
const CGFunctionInfo &FI,
332 if (
const char *Section =
getTarget().getStaticInitSectionSpecifier())
333 Fn->setSection(Section);
336 SetInternalFunctionAttributes(
GlobalDecl(), Fn, FI);
341 Fn->setDoesNotThrow();
343 if (
getLangOpts().Sanitize.has(SanitizerKind::Address) &&
344 !isInSanitizerBlacklist(SanitizerKind::Address, Fn, Loc))
345 Fn->addFnAttr(llvm::Attribute::SanitizeAddress);
347 if (
getLangOpts().Sanitize.has(SanitizerKind::KernelAddress) &&
348 !isInSanitizerBlacklist(SanitizerKind::KernelAddress, Fn, Loc))
349 Fn->addFnAttr(llvm::Attribute::SanitizeAddress);
351 if (
getLangOpts().Sanitize.has(SanitizerKind::HWAddress) &&
352 !isInSanitizerBlacklist(SanitizerKind::HWAddress, Fn, Loc))
353 Fn->addFnAttr(llvm::Attribute::SanitizeHWAddress);
355 if (
getLangOpts().Sanitize.has(SanitizerKind::KernelHWAddress) &&
356 !isInSanitizerBlacklist(SanitizerKind::KernelHWAddress, Fn, Loc))
357 Fn->addFnAttr(llvm::Attribute::SanitizeHWAddress);
359 if (
getLangOpts().Sanitize.has(SanitizerKind::Thread) &&
360 !isInSanitizerBlacklist(SanitizerKind::Thread, Fn, Loc))
361 Fn->addFnAttr(llvm::Attribute::SanitizeThread);
363 if (
getLangOpts().Sanitize.has(SanitizerKind::Memory) &&
364 !isInSanitizerBlacklist(SanitizerKind::Memory, Fn, Loc))
365 Fn->addFnAttr(llvm::Attribute::SanitizeMemory);
367 if (
getLangOpts().Sanitize.has(SanitizerKind::KernelMemory) &&
368 !isInSanitizerBlacklist(SanitizerKind::KernelMemory, Fn, Loc))
369 Fn->addFnAttr(llvm::Attribute::SanitizeMemory);
371 if (
getLangOpts().Sanitize.has(SanitizerKind::SafeStack) &&
372 !isInSanitizerBlacklist(SanitizerKind::SafeStack, Fn, Loc))
373 Fn->addFnAttr(llvm::Attribute::SafeStack);
375 if (
getLangOpts().Sanitize.has(SanitizerKind::ShadowCallStack) &&
376 !isInSanitizerBlacklist(SanitizerKind::ShadowCallStack, Fn, Loc))
377 Fn->addFnAttr(llvm::Attribute::ShadowCallStack);
379 auto RASignKind = getCodeGenOpts().getSignReturnAddress();
381 Fn->addFnAttr(
"sign-return-address",
385 auto RASignKey = getCodeGenOpts().getSignReturnAddressKey();
386 Fn->addFnAttr(
"sign-return-address-key",
387 RASignKey == CodeGenOptions::SignReturnAddressKeyValue::AKey
392 if (getCodeGenOpts().BranchTargetEnforcement)
393 Fn->addFnAttr(
"branch-target-enforcement");
401 void CodeGenModule::EmitPointerToInitFunc(
const VarDecl *D,
402 llvm::GlobalVariable *GV,
403 llvm::Function *InitFunc,
405 llvm::GlobalVariable *PtrArray =
new llvm::GlobalVariable(
406 TheModule, InitFunc->getType(),
true,
407 llvm::GlobalValue::PrivateLinkage, InitFunc,
"__cxx_init_fn_ptr");
408 PtrArray->setSection(ISA->getSection());
409 addUsedGlobal(PtrArray);
412 if (llvm::Comdat *C = GV->getComdat())
413 PtrArray->setComdat(C);
417 CodeGenModule::EmitCXXGlobalVarDeclInitFunc(
const VarDecl *D,
418 llvm::GlobalVariable *Addr,
427 (D->
hasAttr<CUDADeviceAttr>() || D->
hasAttr<CUDAConstantAttr>() ||
436 auto I = DelayedCXXInitPosition.find(D);
437 if (I != DelayedCXXInitPosition.end() && I->second == ~0U)
440 llvm::FunctionType *FTy = llvm::FunctionType::get(
VoidTy,
false);
443 llvm::raw_svector_ostream Out(FnName);
444 getCXXABI().getMangleContext().mangleDynamicInitializer(D, Out);
449 CreateGlobalInitOrDestructFunction(FTy, FnName.str(),
453 auto *ISA = D->
getAttr<InitSegAttr>();
457 llvm::GlobalVariable *COMDATKey =
464 CXXThreadLocalInits.push_back(Fn);
465 CXXThreadLocalInitVars.push_back(D);
466 }
else if (PerformInit && ISA) {
467 EmitPointerToInitFunc(D, Addr, Fn, ISA);
468 }
else if (
auto *IPA = D->
getAttr<InitPriorityAttr>()) {
470 PrioritizedCXXGlobalInits.push_back(std::make_pair(Key, Fn));
484 AddGlobalCtor(Fn, 65535, COMDATKey);
485 }
else if (D->
hasAttr<SelectAnyAttr>()) {
489 AddGlobalCtor(Fn, 65535, COMDATKey);
491 I = DelayedCXXInitPosition.find(D);
492 if (I == DelayedCXXInitPosition.end()) {
493 CXXGlobalInits.push_back(Fn);
494 }
else if (I->second != ~0U) {
495 assert(I->second < CXXGlobalInits.size() &&
496 CXXGlobalInits[I->second] ==
nullptr);
497 CXXGlobalInits[I->second] = Fn;
502 DelayedCXXInitPosition[D] = ~0U;
505 void CodeGenModule::EmitCXXThreadLocalInitFunc() {
506 getCXXABI().EmitThreadLocalInitFuncs(
507 *
this, CXXThreadLocals, CXXThreadLocalInits, CXXThreadLocalInitVars);
509 CXXThreadLocalInits.clear();
510 CXXThreadLocalInitVars.clear();
511 CXXThreadLocals.clear();
515 CodeGenModule::EmitCXXGlobalInitFunc() {
516 while (!CXXGlobalInits.empty() && !CXXGlobalInits.back())
517 CXXGlobalInits.pop_back();
519 if (CXXGlobalInits.empty() && PrioritizedCXXGlobalInits.empty())
522 llvm::FunctionType *FTy = llvm::FunctionType::get(
VoidTy,
false);
526 if (!PrioritizedCXXGlobalInits.empty()) {
528 llvm::array_pod_sort(PrioritizedCXXGlobalInits.begin(),
529 PrioritizedCXXGlobalInits.end());
534 I = PrioritizedCXXGlobalInits.begin(),
535 E = PrioritizedCXXGlobalInits.end(); I != E; ) {
537 PrioE = std::upper_bound(I + 1, E, *I, GlobalInitPriorityCmp());
539 LocalCXXGlobalInits.clear();
540 unsigned Priority = I->first.priority;
543 std::string PrioritySuffix = llvm::utostr(Priority);
545 PrioritySuffix = std::string(6-PrioritySuffix.size(),
'0')+PrioritySuffix;
546 llvm::Function *Fn = CreateGlobalInitOrDestructFunction(
547 FTy,
"_GLOBAL__I_" + PrioritySuffix, FI);
549 for (; I < PrioE; ++I)
550 LocalCXXGlobalInits.push_back(I->second);
553 AddGlobalCtor(Fn, Priority);
555 PrioritizedCXXGlobalInits.clear();
562 if (FileName.empty())
565 for (
size_t i = 0; i < FileName.size(); ++i) {
572 llvm::Function *Fn = CreateGlobalInitOrDestructFunction(
573 FTy, llvm::Twine(
"_GLOBAL__sub_I_", FileName), FI);
578 CXXGlobalInits.clear();
581 void CodeGenModule::EmitCXXGlobalDtorFunc() {
582 if (CXXGlobalDtors.empty())
585 llvm::FunctionType *FTy = llvm::FunctionType::get(
VoidTy,
false);
590 CreateGlobalInitOrDestructFunction(FTy,
"_GLOBAL__D_a", FI);
599 llvm::GlobalVariable *Addr,
608 getTypes().arrangeNullaryFunction(),
615 if (Addr->hasWeakLinkage() || Addr->hasLinkOnceLinkage()) {
635 llvm::BasicBlock *ExitBlock =
nullptr;
641 "guard.uninitialized");
668 for (
unsigned i = 0, e = Decls.size(); i != e; ++i)
672 Scope.ForceCleanup();
685 const std::vector<std::pair<llvm::WeakTrackingVH, llvm::Constant *>>
695 for (
unsigned i = 0, e = DtorsAndObjects.size(); i != e; ++i) {
696 llvm::Value *Callee = DtorsAndObjects[e - i - 1].first;
697 llvm::CallInst *CI =
Builder.CreateCall(Callee,
698 DtorsAndObjects[e - i - 1].second);
700 if (llvm::Function *F = dyn_cast<llvm::Function>(Callee))
701 CI->setCallingConv(F->getCallingConv());
713 bool useEHCleanupForArray,
const VarDecl *VD) {
717 args.push_back(&Dst);
723 FTy,
"__cxx_global_array_dtor", FI, VD->
getLocation());
729 emitDestroy(addr, type, destroyer, useEHCleanupForArray);
const CGFunctionInfo & arrangeBuiltinFunctionDeclaration(QualType resultType, const FunctionArgList &args)
A builtin function is a freestanding function using the default C conventions.
const llvm::DataLayout & getDataLayout() const
void EmitCXXGuardedInitBranch(llvm::Value *NeedsInit, llvm::BasicBlock *InitBlock, llvm::BasicBlock *NoInitBlock, GuardKind Kind, const VarDecl *D)
Emit a branch to select whether or not to perform guarded initialization.
llvm::IntegerType * IntTy
int
Other implicit parameter.
Destroyer * getDestroyer(QualType::DestructionKind destructionKind)
A (possibly-)qualified type.
CodeGenTypes & getTypes()
const CodeGenOptions & getCodeGenOpts() const
llvm::LLVMContext & getLLVMContext()
The base class of the type hierarchy.
void EmitComplexExprIntoLValue(const Expr *E, LValue dest, bool isInit)
EmitComplexExprIntoLValue - Emit the given expression of complex type and place its result into the s...
Represents a variable declaration or definition.
llvm::Value * EmitObjCAutoreleasePoolPush()
Produce the code to do a objc_autoreleasepool_push.
llvm::Type * ConvertTypeForMem(QualType T)
ConvertTypeForMem - Convert type T into a llvm::Type.
std::string getName(ArrayRef< StringRef > Parts) const
Get the platform-specific name separator.
const TargetInfo & getTarget() const
void emitDestroy(Address addr, QualType type, Destroyer *destroyer, bool useEHCleanupForArray)
emitDestroy - Immediately perform the destruction of the given object.
CodeGenFunction - This class organizes the per-function state that is used while generating LLVM code...
llvm::Type * ConvertType(QualType T)
ConvertType - Convert type T into a llvm::Type.
llvm::IntegerType * Int64Ty
RValue EmitReferenceBindingToExpr(const Expr *E)
Emits a reference binding to the passed in expression.
llvm::Constant * getAddrOfCXXStructor(const CXXMethodDecl *MD, StructorType Type, const CGFunctionInfo *FnInfo=nullptr, llvm::FunctionType *FnType=nullptr, bool DontDefer=false, ForDefinition_t IsForDefinition=NotForDefinition)
Return the address of the constructor/destructor of the given type.
llvm::CallInst * EmitRuntimeCall(llvm::Value *callee, const Twine &name="")
bool isReferenceType() const
SourceLocation getBeginLoc() const LLVM_READONLY
void GenerateCXXGlobalVarDeclInitFunc(llvm::Function *Fn, const VarDecl *D, llvm::GlobalVariable *Addr, bool PerformInit)
Emit the code necessary to initialize the given global variable.
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...
static ApplyDebugLocation CreateArtificial(CodeGenFunction &CGF)
Apply TemporaryLocation if it is valid.
CharUnits - This is an opaque type for sizes expressed in character units.
llvm::PointerType * VoidPtrTy
TemplateSpecializationKind getTemplateSpecializationKind() const
If this variable is an instantiation of a variable template or a static data member of a class templa...
bool needsEHCleanup(QualType::DestructionKind kind)
Determines whether an EH cleanup is required to destroy a type with the given destruction kind...
void registerGlobalDtorWithAtExit(const VarDecl &D, llvm::Constant *fn, llvm::Constant *addr)
Call atexit() with a function that passes the given argument to the given function.
Scope - A scope is a transient data structure that is used while parsing the program.
llvm::BasicBlock * createBasicBlock(const Twine &name="", llvm::Function *parent=nullptr, llvm::BasicBlock *before=nullptr)
createBasicBlock - Create an LLVM basic block.
bool hasTrivialDestructor() const
Determine whether this class has a trivial destructor (C++ [class.dtor]p3)
CXXDestructorDecl * getDestructor() const
Returns the destructor decl for this class.
virtual bool canCallMismatchedFunctionType() const
Returns true if the target allows calling a function through a pointer with a different signature tha...
constexpr XRayInstrMask All
llvm::Constant * CreateRuntimeFunction(llvm::FunctionType *Ty, StringRef Name, llvm::AttributeList ExtraAttrs=llvm::AttributeList(), bool Local=false)
Create a new runtime function with the specified type and name.
virtual void EmitObjCGlobalAssign(CodeGen::CodeGenFunction &CGF, llvm::Value *src, Address dest, bool threadlocal=false)=0
bool isTypeConstant(QualType QTy, bool ExcludeCtorDtor)
isTypeConstant - Determine whether an object of this type can be emitted as a constant.
CXXRecordDecl * getAsCXXRecordDecl() const
Retrieves the CXXRecordDecl that this type refers to, either because the type is a RecordType or beca...
ASTContext & getContext() const
llvm::CallInst * EmitNounwindRuntimeCall(llvm::Value *callee, const Twine &name="")
RValue - This trivial value class is used to represent the result of an expression that is evaluated...
virtual void mangleDynamicAtExitDestructor(const VarDecl *D, raw_ostream &)=0
QuantityType getQuantity() const
getQuantity - Get the raw integer representation of this quantity.
virtual bool HasThisReturn(GlobalDecl GD) const
Returns true if the given constructor or destructor is one of the kinds that the ABI says returns 'th...
llvm::CallingConv::ID getRuntimeCC() const
void EmitCXXGuardedInit(const VarDecl &D, llvm::GlobalVariable *DeclPtr, bool PerformInit)
Emit code in this function to perform a guarded variable initialization.
CGObjCRuntime & getObjCRuntime()
Return a reference to the configured Objective-C runtime.
static TypeEvaluationKind getEvaluationKind(QualType T)
getEvaluationKind - Return the TypeEvaluationKind of QualType T.
llvm::Function * generateDestroyHelper(Address addr, QualType type, Destroyer *destroyer, bool useEHCleanupForArray, const VarDecl *VD)
generateDestroyHelper - Generates a helper function which, when invoked, destroys the given object...
This represents one expression.
bool hasLocalStorage() const
Returns true if a variable with function scope is a non-static local variable.
Enters a new scope for capturing cleanups, all of which will be executed once the scope is exited...
const CGFunctionInfo & arrangeNullaryFunction()
A nullary function is a freestanding function of type 'void ()'.
Represents a C++ destructor within a class.
virtual void EmitGuardedInit(CodeGenFunction &CGF, const VarDecl &D, llvm::GlobalVariable *DeclPtr, bool PerformInit)=0
Emits the guarded initializer and destructor setup for the given variable, given that it couldn't be ...
void EmitInvariantStart(llvm::Constant *Addr, CharUnits Size)
TLSKind getTLSKind() const
static CharUnits fromQuantity(QuantityType Quantity)
fromQuantity - Construct a CharUnits quantity from a raw integer type.
virtual void registerGlobalDtor(CodeGenFunction &CGF, const VarDecl &D, llvm::Constant *Dtor, llvm::Constant *Addr)=0
Emit code to force the execution of a destructor during global teardown.
void GenerateCXXGlobalInitFunc(llvm::Function *Fn, ArrayRef< llvm::Function *> CXXThreadLocals, ConstantAddress Guard=ConstantAddress::invalid())
GenerateCXXGlobalInitFunc - Generates code for initializing global variables.
void EmitCXXGlobalVarDeclInit(const VarDecl &D, llvm::Constant *DeclPtr, bool PerformInit)
EmitCXXGlobalVarDeclInit - Create the initializer for a C++ variable with global storage.
bool isObjCStrong() const
ASTContext & getContext() const
bool isTemplateInstantiation(TemplateSpecializationKind Kind)
Determine whether this template specialization kind refers to an instantiation of an entity (as oppos...
GlobalDecl - represents a global declaration.
The l-value was considered opaque, so the alignment was determined from a type.
Encodes a location in the source.
llvm::Constant * createAtExitStub(const VarDecl &VD, llvm::Constant *Dtor, llvm::Constant *Addr)
Create a stub function, suitable for being passed to atexit, which passes the given address to the gi...
bool hasGlobalStorage() const
Returns true for all variables that do not have local storage.
void StartFunction(GlobalDecl GD, QualType RetTy, llvm::Function *Fn, const CGFunctionInfo &FnInfo, const FunctionArgList &Args, SourceLocation Loc=SourceLocation(), SourceLocation StartLoc=SourceLocation())
Emit code for the start of a function.
DestructionKind isDestructedType() const
Returns a nonzero value if objects of this type require non-trivial work to clean up after...
MangleContext & getMangleContext()
Gets the mangle context.
constexpr XRayInstrMask None
void Error(SourceLocation loc, StringRef error)
Emit a general error that something can't be done.
void FinishFunction(SourceLocation EndLoc=SourceLocation())
FinishFunction - Complete IR generation of the current function.
SourceLocation getExprLoc() const LLVM_READONLY
getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic exp...
llvm::Value * EmitScalarExpr(const Expr *E, bool IgnoreResultAssign=false)
EmitScalarExpr - Emit the computation of the specified expression of LLVM scalar type, returning the result.
FunctionArgList - Type for representing both the decl and type of parameters to a function...
llvm::Value * getScalarVal() const
getScalarVal() - Return the Value* of this scalar value.
CGFunctionInfo - Class to encapsulate the information about a function definition.
This class organizes the cross-function state that is used while generating LLVM code.
CGOpenMPRuntime & getOpenMPRuntime()
Return a reference to the configured OpenMP runtime.
Dataflow Directional Tag Classes.
const Expr * getInit() const
llvm::Constant * getPointer() const
llvm::LoadInst * CreateLoad(Address Addr, const llvm::Twine &Name="")
static void EmitDeclDestroy(CodeGenFunction &CGF, const VarDecl &D, ConstantAddress Addr)
Emit code to cause the destruction of the given variable with static storage duration.
llvm::Function * getIntrinsic(unsigned IID, ArrayRef< llvm::Type *> Tys=None)
llvm::StoreInst * CreateStore(llvm::Value *Val, Address Addr, bool IsVolatile=false)
static AggValueSlot forLValue(const LValue &LV, IsDestructed_t isDestructed, NeedsGCBarriers_t needsGC, IsAliased_t isAliased, Overlap_t mayOverlap, IsZeroed_t isZeroed=IsNotZeroed, IsSanitizerChecked_t isChecked=IsNotSanitizerChecked)
LValue MakeAddrLValue(Address Addr, QualType T, AlignmentSource Source=AlignmentSource::Type)
void EmitAggExpr(const Expr *E, AggValueSlot AS)
EmitAggExpr - Emit the computation of the specified expression of aggregate type. ...
virtual void EmitObjCWeakAssign(CodeGen::CodeGenFunction &CGF, llvm::Value *src, Address dest)=0
virtual bool emitDeclareTargetVarDefinition(const VarDecl *VD, llvm::GlobalVariable *Addr, bool PerformInit)
Emit a code for initialization of declare target variable.
CodeGenTypes & getTypes() const
llvm::PointerType * Int8PtrTy
void EmitScalarInit(const Expr *init, const ValueDecl *D, LValue lvalue, bool capturedByInit)
Internal linkage, which indicates that the entity can be referred to from within the translation unit...
void EmitBlock(llvm::BasicBlock *BB, bool IsFinished=false)
EmitBlock - Emit the given block.
static void EmitDeclInit(CodeGenFunction &CGF, const VarDecl &D, ConstantAddress DeclPtr)
Represents a C++ struct/union/class.
llvm::Function * CreateGlobalInitOrDestructFunction(llvm::FunctionType *ty, const Twine &name, const CGFunctionInfo &FI, SourceLocation Loc=SourceLocation(), bool TLS=false)
A specialization of Address that requires the address to be an LLVM Constant.
CGCXXABI & getCXXABI() const
void EmitObjCAutoreleasePoolCleanup(llvm::Value *Ptr)
void GenerateCXXGlobalDtorsFunc(llvm::Function *Fn, const std::vector< std::pair< llvm::WeakTrackingVH, llvm::Constant *>> &DtorsAndObjects)
GenerateCXXGlobalDtorsFunc - Generates code for destroying global variables.
CharUnits getTypeSizeInChars(QualType T) const
Return the size of the specified (complete) type T, in characters.
static ApplyDebugLocation CreateEmpty(CodeGenFunction &CGF)
Set the IRBuilder to not attach debug locations.
bool isLocalVarDecl() const
Returns true for local variable declarations other than parameters.
LValue - This represents an lvalue references.
const LangOptions & getLangOpts() const
unsigned getTargetAddressSpace(QualType T) const
LLVM_READONLY bool isPreprocessingNumberBody(unsigned char c)
Return true if this is the body character of a C preprocessing number, which is [a-zA-Z0-9_.
const LangOptions & getLangOpts() const
SourceLocation getLocation() const
bool isExternallyVisible() const
static void EmitDeclInvariant(CodeGenFunction &CGF, const VarDecl &D, llvm::Constant *Addr)
Emit code to cause the variable at the given address to be considered as constant from this point onw...
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.
void Destroyer(CodeGenFunction &CGF, Address addr, QualType ty)
static CharUnits getDeclAlign(Expr *E, CharUnits TypeAlign, ASTContext &Context)
A helper function to get the alignment of a Decl referred to by DeclRefExpr or MemberExpr.
llvm::FunctionType * GetFunctionType(const CGFunctionInfo &Info)
GetFunctionType - Get the LLVM function type for.
bool isNoDestroy(const ASTContext &) const
Do we need to emit an exit-time destructor for this variable?