clang  10.0.0git
X86.h
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1 //===--- X86.h - Declare X86 target feature support -------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file declares X86 TargetInfo objects.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_X86_H
14 #define LLVM_CLANG_LIB_BASIC_TARGETS_X86_H
15 
16 #include "OSTargets.h"
17 #include "clang/Basic/TargetInfo.h"
19 #include "llvm/ADT/Triple.h"
20 #include "llvm/Support/Compiler.h"
21 
22 namespace clang {
23 namespace targets {
24 
25 static const unsigned X86AddrSpaceMap[] = {
26  0, // Default
27  0, // opencl_global
28  0, // opencl_local
29  0, // opencl_constant
30  0, // opencl_private
31  0, // opencl_generic
32  0, // cuda_device
33  0, // cuda_constant
34  0, // cuda_shared
35  270, // ptr32_sptr
36  271, // ptr32_uptr
37  272 // ptr64
38 };
39 
40 // X86 target abstract base class; x86-32 and x86-64 are very close, so
41 // most of the implementation can be shared.
42 class LLVM_LIBRARY_VISIBILITY X86TargetInfo : public TargetInfo {
43 
44  enum X86SSEEnum {
45  NoSSE,
46  SSE1,
47  SSE2,
48  SSE3,
49  SSSE3,
50  SSE41,
51  SSE42,
52  AVX,
53  AVX2,
54  AVX512F
55  } SSELevel = NoSSE;
56  enum MMX3DNowEnum {
57  NoMMX3DNow,
58  MMX,
59  AMD3DNow,
60  AMD3DNowAthlon
61  } MMX3DNowLevel = NoMMX3DNow;
62  enum XOPEnum { NoXOP, SSE4A, FMA4, XOP } XOPLevel = NoXOP;
63  enum AddrSpace { ptr32_sptr = 270, ptr32_uptr = 271, ptr64 = 272 };
64 
65  bool HasAES = false;
66  bool HasVAES = false;
67  bool HasPCLMUL = false;
68  bool HasVPCLMULQDQ = false;
69  bool HasGFNI = false;
70  bool HasLZCNT = false;
71  bool HasRDRND = false;
72  bool HasFSGSBASE = false;
73  bool HasBMI = false;
74  bool HasBMI2 = false;
75  bool HasPOPCNT = false;
76  bool HasRTM = false;
77  bool HasPRFCHW = false;
78  bool HasRDSEED = false;
79  bool HasADX = false;
80  bool HasTBM = false;
81  bool HasLWP = false;
82  bool HasFMA = false;
83  bool HasF16C = false;
84  bool HasAVX512CD = false;
85  bool HasAVX512VPOPCNTDQ = false;
86  bool HasAVX512VNNI = false;
87  bool HasAVX512BF16 = false;
88  bool HasAVX512ER = false;
89  bool HasAVX512PF = false;
90  bool HasAVX512DQ = false;
91  bool HasAVX512BITALG = false;
92  bool HasAVX512BW = false;
93  bool HasAVX512VL = false;
94  bool HasAVX512VBMI = false;
95  bool HasAVX512VBMI2 = false;
96  bool HasAVX512IFMA = false;
97  bool HasAVX512VP2INTERSECT = false;
98  bool HasSHA = false;
99  bool HasSHSTK = false;
100  bool HasSGX = false;
101  bool HasCX8 = false;
102  bool HasCX16 = false;
103  bool HasFXSR = false;
104  bool HasXSAVE = false;
105  bool HasXSAVEOPT = false;
106  bool HasXSAVEC = false;
107  bool HasXSAVES = false;
108  bool HasMWAITX = false;
109  bool HasCLZERO = false;
110  bool HasCLDEMOTE = false;
111  bool HasPCONFIG = false;
112  bool HasPKU = false;
113  bool HasCLFLUSHOPT = false;
114  bool HasCLWB = false;
115  bool HasMOVBE = false;
116  bool HasPREFETCHWT1 = false;
117  bool HasRDPID = false;
118  bool HasRetpolineExternalThunk = false;
119  bool HasLAHFSAHF = false;
120  bool HasWBNOINVD = false;
121  bool HasWAITPKG = false;
122  bool HasMOVDIRI = false;
123  bool HasMOVDIR64B = false;
124  bool HasPTWRITE = false;
125  bool HasINVPCID = false;
126  bool HasENQCMD = false;
127 
128 protected:
129  /// Enumeration of all of the X86 CPUs supported by Clang.
130  ///
131  /// Each enumeration represents a particular CPU supported by Clang. These
132  /// loosely correspond to the options passed to '-march' or '-mtune' flags.
133  enum CPUKind {
135 #define PROC(ENUM, STRING, IS64BIT) CK_##ENUM,
136 #include "clang/Basic/X86Target.def"
137  } CPU = CK_Generic;
138 
139  bool checkCPUKind(CPUKind Kind) const;
140 
141  CPUKind getCPUKind(StringRef CPU) const;
142 
143  enum FPMathKind { FP_Default, FP_SSE, FP_387 } FPMath = FP_Default;
144 
145 public:
146  X86TargetInfo(const llvm::Triple &Triple, const TargetOptions &)
147  : TargetInfo(Triple) {
148  LongDoubleFormat = &llvm::APFloat::x87DoubleExtended();
149  AddrSpaceMap = &X86AddrSpaceMap;
150  }
151 
152  const char *getLongDoubleMangling() const override {
153  return LongDoubleFormat == &llvm::APFloat::IEEEquad() ? "g" : "e";
154  }
155 
156  unsigned getFloatEvalMethod() const override {
157  // X87 evaluates with 80 bits "long double" precision.
158  return SSELevel == NoSSE ? 2 : 0;
159  }
160 
161  ArrayRef<const char *> getGCCRegNames() const override;
162 
164  return None;
165  }
166 
167  ArrayRef<TargetInfo::AddlRegName> getGCCAddlRegNames() const override;
168 
169  bool validateCpuSupports(StringRef Name) const override;
170 
171  bool validateCpuIs(StringRef Name) const override;
172 
173  bool validateCPUSpecificCPUDispatch(StringRef Name) const override;
174 
175  char CPUSpecificManglingCharacter(StringRef Name) const override;
176 
177  void getCPUSpecificCPUDispatchFeatures(
178  StringRef Name,
179  llvm::SmallVectorImpl<StringRef> &Features) const override;
180 
181  bool validateAsmConstraint(const char *&Name,
182  TargetInfo::ConstraintInfo &info) const override;
183 
184  bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize,
185  bool &HasSizeMismatch) const override {
186  // esp and ebp are the only 32-bit registers the x86 backend can currently
187  // handle.
188  if (RegName.equals("esp") || RegName.equals("ebp")) {
189  // Check that the register size is 32-bit.
190  HasSizeMismatch = RegSize != 32;
191  return true;
192  }
193 
194  return false;
195  }
196 
197  bool validateOutputSize(const llvm::StringMap<bool> &FeatureMap,
198  StringRef Constraint, unsigned Size) const override;
199 
200  bool validateInputSize(const llvm::StringMap<bool> &FeatureMap,
201  StringRef Constraint, unsigned Size) const override;
202 
203  virtual bool
205  return true;
206  };
207 
208  virtual bool
210  return true;
211  };
212 
213  virtual bool validateOperandSize(const llvm::StringMap<bool> &FeatureMap,
214  StringRef Constraint, unsigned Size) const;
215 
216  std::string convertConstraint(const char *&Constraint) const override;
217  const char *getClobbers() const override {
218  return "~{dirflag},~{fpsr},~{flags}";
219  }
220 
221  StringRef getConstraintRegister(StringRef Constraint,
222  StringRef Expression) const override {
223  StringRef::iterator I, E;
224  for (I = Constraint.begin(), E = Constraint.end(); I != E; ++I) {
225  if (isalpha(*I) || *I == '@')
226  break;
227  }
228  if (I == E)
229  return "";
230  switch (*I) {
231  // For the register constraints, return the matching register name
232  case 'a':
233  return "ax";
234  case 'b':
235  return "bx";
236  case 'c':
237  return "cx";
238  case 'd':
239  return "dx";
240  case 'S':
241  return "si";
242  case 'D':
243  return "di";
244  // In case the constraint is 'r' we need to return Expression
245  case 'r':
246  return Expression;
247  // Double letters Y<x> constraints
248  case 'Y':
249  if ((++I != E) && ((*I == '0') || (*I == 'z')))
250  return "xmm0";
251  break;
252  default:
253  break;
254  }
255  return "";
256  }
257 
258  bool useFP16ConversionIntrinsics() const override {
259  return false;
260  }
261 
262  void getTargetDefines(const LangOptions &Opts,
263  MacroBuilder &Builder) const override;
264 
265  static void setSSELevel(llvm::StringMap<bool> &Features, X86SSEEnum Level,
266  bool Enabled);
267 
268  static void setMMXLevel(llvm::StringMap<bool> &Features, MMX3DNowEnum Level,
269  bool Enabled);
270 
271  static void setXOPLevel(llvm::StringMap<bool> &Features, XOPEnum Level,
272  bool Enabled);
273 
274  void setFeatureEnabled(llvm::StringMap<bool> &Features, StringRef Name,
275  bool Enabled) const override {
276  setFeatureEnabledImpl(Features, Name, Enabled);
277  }
278 
279  // This exists purely to cut down on the number of virtual calls in
280  // initFeatureMap which calls this repeatedly.
281  static void setFeatureEnabledImpl(llvm::StringMap<bool> &Features,
282  StringRef Name, bool Enabled);
283 
284  bool
285  initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
286  StringRef CPU,
287  const std::vector<std::string> &FeaturesVec) const override;
288 
289  bool isValidFeatureName(StringRef Name) const override;
290 
291  bool hasFeature(StringRef Feature) const override;
292 
293  bool handleTargetFeatures(std::vector<std::string> &Features,
294  DiagnosticsEngine &Diags) override;
295 
296  StringRef getABI() const override {
297  if (getTriple().getArch() == llvm::Triple::x86_64 && SSELevel >= AVX512F)
298  return "avx512";
299  if (getTriple().getArch() == llvm::Triple::x86_64 && SSELevel >= AVX)
300  return "avx";
301  if (getTriple().getArch() == llvm::Triple::x86 &&
302  MMX3DNowLevel == NoMMX3DNow)
303  return "no-mmx";
304  return "";
305  }
306 
307  bool isValidCPUName(StringRef Name) const override {
308  return checkCPUKind(getCPUKind(Name));
309  }
310 
311  void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
312 
313  bool setCPU(const std::string &Name) override {
314  return checkCPUKind(CPU = getCPUKind(Name));
315  }
316 
317  unsigned multiVersionSortPriority(StringRef Name) const override;
318 
319  bool setFPMath(StringRef Name) override;
320 
322  // Most of the non-ARM calling conventions are i386 conventions.
323  switch (CC) {
324  case CC_X86ThisCall:
325  case CC_X86FastCall:
326  case CC_X86StdCall:
327  case CC_X86VectorCall:
328  case CC_X86RegCall:
329  case CC_C:
330  case CC_PreserveMost:
331  case CC_Swift:
332  case CC_X86Pascal:
333  case CC_IntelOclBicc:
334  case CC_OpenCLKernel:
335  return CCCR_OK;
336  default:
337  return CCCR_Warning;
338  }
339  }
340 
342  return CC_C;
343  }
344 
345  bool hasSjLjLowering() const override { return true; }
346 
347  void setSupportedOpenCLOpts() override {
348  getSupportedOpenCLOpts().supportAll();
349  }
350 
351  uint64_t getPointerWidthV(unsigned AddrSpace) const override {
352  if (AddrSpace == ptr32_sptr || AddrSpace == ptr32_uptr)
353  return 32;
354  if (AddrSpace == ptr64)
355  return 64;
356  return PointerWidth;
357  }
358 
359  uint64_t getPointerAlignV(unsigned AddrSpace) const override {
360  return getPointerWidthV(AddrSpace);
361  }
362 };
363 
364 // X86-32 generic target
365 class LLVM_LIBRARY_VISIBILITY X86_32TargetInfo : public X86TargetInfo {
366 public:
367  X86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
368  : X86TargetInfo(Triple, Opts) {
369  DoubleAlign = LongLongAlign = 32;
370  LongDoubleWidth = 96;
371  LongDoubleAlign = 32;
372  SuitableAlign = 128;
373  resetDataLayout("e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-"
374  "f80:32-n8:16:32-S128");
375  SizeType = UnsignedInt;
376  PtrDiffType = SignedInt;
377  IntPtrType = SignedInt;
378  RegParmMax = 3;
379 
380  // Use fpret for all types.
381  RealTypeUsesObjCFPRet =
382  ((1 << TargetInfo::Float) | (1 << TargetInfo::Double) |
383  (1 << TargetInfo::LongDouble));
384 
385  // x86-32 has atomics up to 8 bytes
386  MaxAtomicPromoteWidth = 64;
387  MaxAtomicInlineWidth = 32;
388  }
389 
392  }
393 
394  int getEHDataRegisterNumber(unsigned RegNo) const override {
395  if (RegNo == 0)
396  return 0;
397  if (RegNo == 1)
398  return 2;
399  return -1;
400  }
401 
402  bool validateOperandSize(const llvm::StringMap<bool> &FeatureMap,
403  StringRef Constraint, unsigned Size) const override {
404  switch (Constraint[0]) {
405  default:
406  break;
407  case 'R':
408  case 'q':
409  case 'Q':
410  case 'a':
411  case 'b':
412  case 'c':
413  case 'd':
414  case 'S':
415  case 'D':
416  return Size <= 32;
417  case 'A':
418  return Size <= 64;
419  }
420 
421  return X86TargetInfo::validateOperandSize(FeatureMap, Constraint, Size);
422  }
423 
424  void setMaxAtomicWidth() override {
425  if (hasFeature("cx8"))
426  MaxAtomicInlineWidth = 64;
427  }
428 
429  ArrayRef<Builtin::Info> getTargetBuiltins() const override;
430 };
431 
432 class LLVM_LIBRARY_VISIBILITY NetBSDI386TargetInfo
433  : public NetBSDTargetInfo<X86_32TargetInfo> {
434 public:
435  NetBSDI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
436  : NetBSDTargetInfo<X86_32TargetInfo>(Triple, Opts) {}
437 
438  unsigned getFloatEvalMethod() const override {
439  unsigned Major, Minor, Micro;
440  getTriple().getOSVersion(Major, Minor, Micro);
441  // New NetBSD uses the default rounding mode.
442  if (Major >= 7 || (Major == 6 && Minor == 99 && Micro >= 26) || Major == 0)
444  // NetBSD before 6.99.26 defaults to "double" rounding.
445  return 1;
446  }
447 };
448 
449 class LLVM_LIBRARY_VISIBILITY OpenBSDI386TargetInfo
450  : public OpenBSDTargetInfo<X86_32TargetInfo> {
451 public:
452  OpenBSDI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
453  : OpenBSDTargetInfo<X86_32TargetInfo>(Triple, Opts) {
454  SizeType = UnsignedLong;
455  IntPtrType = SignedLong;
456  PtrDiffType = SignedLong;
457  }
458 };
459 
460 class LLVM_LIBRARY_VISIBILITY DarwinI386TargetInfo
461  : public DarwinTargetInfo<X86_32TargetInfo> {
462 public:
463  DarwinI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
464  : DarwinTargetInfo<X86_32TargetInfo>(Triple, Opts) {
465  LongDoubleWidth = 128;
466  LongDoubleAlign = 128;
467  SuitableAlign = 128;
468  MaxVectorAlign = 256;
469  // The watchOS simulator uses the builtin bool type for Objective-C.
470  llvm::Triple T = llvm::Triple(Triple);
471  if (T.isWatchOS())
472  UseSignedCharForObjCBool = false;
473  SizeType = UnsignedLong;
474  IntPtrType = SignedLong;
475  resetDataLayout("e-m:o-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-"
476  "f80:128-n8:16:32-S128");
477  HasAlignMac68kSupport = true;
478  }
479 
480  bool handleTargetFeatures(std::vector<std::string> &Features,
481  DiagnosticsEngine &Diags) override {
483  Diags))
484  return false;
485  // We now know the features we have: we can decide how to align vectors.
486  MaxVectorAlign =
487  hasFeature("avx512f") ? 512 : hasFeature("avx") ? 256 : 128;
488  return true;
489  }
490 };
491 
492 // x86-32 Windows target
493 class LLVM_LIBRARY_VISIBILITY WindowsX86_32TargetInfo
494  : public WindowsTargetInfo<X86_32TargetInfo> {
495 public:
496  WindowsX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
497  : WindowsTargetInfo<X86_32TargetInfo>(Triple, Opts) {
498  DoubleAlign = LongLongAlign = 64;
499  bool IsWinCOFF =
500  getTriple().isOSWindows() && getTriple().isOSBinFormatCOFF();
501  resetDataLayout(IsWinCOFF ? "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:"
502  "64-i64:64-f80:32-n8:16:32-a:0:32-S32"
503  : "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:"
504  "64-i64:64-f80:32-n8:16:32-a:0:32-S32");
505  }
506 };
507 
508 // x86-32 Windows Visual Studio target
509 class LLVM_LIBRARY_VISIBILITY MicrosoftX86_32TargetInfo
510  : public WindowsX86_32TargetInfo {
511 public:
512  MicrosoftX86_32TargetInfo(const llvm::Triple &Triple,
513  const TargetOptions &Opts)
514  : WindowsX86_32TargetInfo(Triple, Opts) {
515  LongDoubleWidth = LongDoubleAlign = 64;
516  LongDoubleFormat = &llvm::APFloat::IEEEdouble();
517  }
518 
519  void getTargetDefines(const LangOptions &Opts,
520  MacroBuilder &Builder) const override {
522  // The value of the following reflects processor type.
523  // 300=386, 400=486, 500=Pentium, 600=Blend (default)
524  // We lost the original triple, so we use the default.
525  Builder.defineMacro("_M_IX86", "600");
526  }
527 };
528 
529 // x86-32 MinGW target
530 class LLVM_LIBRARY_VISIBILITY MinGWX86_32TargetInfo
531  : public WindowsX86_32TargetInfo {
532 public:
533  MinGWX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
534  : WindowsX86_32TargetInfo(Triple, Opts) {
535  HasFloat128 = true;
536  }
537 
538  void getTargetDefines(const LangOptions &Opts,
539  MacroBuilder &Builder) const override {
541  Builder.defineMacro("_X86_");
542  }
543 };
544 
545 // x86-32 Cygwin target
546 class LLVM_LIBRARY_VISIBILITY CygwinX86_32TargetInfo : public X86_32TargetInfo {
547 public:
548  CygwinX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
549  : X86_32TargetInfo(Triple, Opts) {
550  this->WCharType = TargetInfo::UnsignedShort;
551  DoubleAlign = LongLongAlign = 64;
552  resetDataLayout("e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:"
553  "32-n8:16:32-a:0:32-S32");
554  }
555 
556  void getTargetDefines(const LangOptions &Opts,
557  MacroBuilder &Builder) const override {
558  X86_32TargetInfo::getTargetDefines(Opts, Builder);
559  Builder.defineMacro("_X86_");
560  Builder.defineMacro("__CYGWIN__");
561  Builder.defineMacro("__CYGWIN32__");
562  addCygMingDefines(Opts, Builder);
563  DefineStd(Builder, "unix", Opts);
564  if (Opts.CPlusPlus)
565  Builder.defineMacro("_GNU_SOURCE");
566  }
567 };
568 
569 // x86-32 Haiku target
570 class LLVM_LIBRARY_VISIBILITY HaikuX86_32TargetInfo
571  : public HaikuTargetInfo<X86_32TargetInfo> {
572 public:
573  HaikuX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
574  : HaikuTargetInfo<X86_32TargetInfo>(Triple, Opts) {}
575 
576  void getTargetDefines(const LangOptions &Opts,
577  MacroBuilder &Builder) const override {
579  Builder.defineMacro("__INTEL__");
580  }
581 };
582 
583 // X86-32 MCU target
584 class LLVM_LIBRARY_VISIBILITY MCUX86_32TargetInfo : public X86_32TargetInfo {
585 public:
586  MCUX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
587  : X86_32TargetInfo(Triple, Opts) {
588  LongDoubleWidth = 64;
589  LongDoubleFormat = &llvm::APFloat::IEEEdouble();
590  resetDataLayout("e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:32-f64:"
591  "32-f128:32-n8:16:32-a:0:32-S32");
592  WIntType = UnsignedInt;
593  }
594 
596  // On MCU we support only C calling convention.
597  return CC == CC_C ? CCCR_OK : CCCR_Warning;
598  }
599 
600  void getTargetDefines(const LangOptions &Opts,
601  MacroBuilder &Builder) const override {
602  X86_32TargetInfo::getTargetDefines(Opts, Builder);
603  Builder.defineMacro("__iamcu");
604  Builder.defineMacro("__iamcu__");
605  }
606 
607  bool allowsLargerPreferedTypeAlignment() const override { return false; }
608 };
609 
610 // x86-32 RTEMS target
611 class LLVM_LIBRARY_VISIBILITY RTEMSX86_32TargetInfo : public X86_32TargetInfo {
612 public:
613  RTEMSX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
614  : X86_32TargetInfo(Triple, Opts) {
615  SizeType = UnsignedLong;
616  IntPtrType = SignedLong;
617  PtrDiffType = SignedLong;
618  }
619 
620  void getTargetDefines(const LangOptions &Opts,
621  MacroBuilder &Builder) const override {
622  X86_32TargetInfo::getTargetDefines(Opts, Builder);
623  Builder.defineMacro("__INTEL__");
624  Builder.defineMacro("__rtems__");
625  }
626 };
627 
628 // x86-64 generic target
629 class LLVM_LIBRARY_VISIBILITY X86_64TargetInfo : public X86TargetInfo {
630 public:
631  X86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
632  : X86TargetInfo(Triple, Opts) {
633  const bool IsX32 = getTriple().getEnvironment() == llvm::Triple::GNUX32;
634  bool IsWinCOFF =
635  getTriple().isOSWindows() && getTriple().isOSBinFormatCOFF();
636  LongWidth = LongAlign = PointerWidth = PointerAlign = IsX32 ? 32 : 64;
637  LongDoubleWidth = 128;
638  LongDoubleAlign = 128;
639  LargeArrayMinWidth = 128;
640  LargeArrayAlign = 128;
641  SuitableAlign = 128;
642  SizeType = IsX32 ? UnsignedInt : UnsignedLong;
643  PtrDiffType = IsX32 ? SignedInt : SignedLong;
644  IntPtrType = IsX32 ? SignedInt : SignedLong;
645  IntMaxType = IsX32 ? SignedLongLong : SignedLong;
646  Int64Type = IsX32 ? SignedLongLong : SignedLong;
647  RegParmMax = 6;
648 
649  // Pointers are 32-bit in x32.
650  resetDataLayout(IsX32 ? "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-"
651  "i64:64-f80:128-n8:16:32:64-S128"
652  : IsWinCOFF ? "e-m:w-p270:32:32-p271:32:32-p272:64:"
653  "64-i64:64-f80:128-n8:16:32:64-S128"
654  : "e-m:e-p270:32:32-p271:32:32-p272:64:"
655  "64-i64:64-f80:128-n8:16:32:64-S128");
656 
657  // Use fpret only for long double.
658  RealTypeUsesObjCFPRet = (1 << TargetInfo::LongDouble);
659 
660  // Use fp2ret for _Complex long double.
661  ComplexLongDoubleUsesFP2Ret = true;
662 
663  // Make __builtin_ms_va_list available.
664  HasBuiltinMSVaList = true;
665 
666  // x86-64 has atomics up to 16 bytes.
667  MaxAtomicPromoteWidth = 128;
668  MaxAtomicInlineWidth = 64;
669  }
670 
673  }
674 
675  int getEHDataRegisterNumber(unsigned RegNo) const override {
676  if (RegNo == 0)
677  return 0;
678  if (RegNo == 1)
679  return 1;
680  return -1;
681  }
682 
684  switch (CC) {
685  case CC_C:
686  case CC_Swift:
687  case CC_X86VectorCall:
688  case CC_IntelOclBicc:
689  case CC_Win64:
690  case CC_PreserveMost:
691  case CC_PreserveAll:
692  case CC_X86RegCall:
693  case CC_OpenCLKernel:
694  return CCCR_OK;
695  default:
696  return CCCR_Warning;
697  }
698  }
699 
701  return CC_C;
702  }
703 
704  // for x32 we need it here explicitly
705  bool hasInt128Type() const override { return true; }
706 
707  unsigned getUnwindWordWidth() const override { return 64; }
708 
709  unsigned getRegisterWidth() const override { return 64; }
710 
711  bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize,
712  bool &HasSizeMismatch) const override {
713  // rsp and rbp are the only 64-bit registers the x86 backend can currently
714  // handle.
715  if (RegName.equals("rsp") || RegName.equals("rbp")) {
716  // Check that the register size is 64-bit.
717  HasSizeMismatch = RegSize != 64;
718  return true;
719  }
720 
721  // Check if the register is a 32-bit register the backend can handle.
722  return X86TargetInfo::validateGlobalRegisterVariable(RegName, RegSize,
723  HasSizeMismatch);
724  }
725 
726  void setMaxAtomicWidth() override {
727  if (hasFeature("cx16"))
728  MaxAtomicInlineWidth = 128;
729  }
730 
731  ArrayRef<Builtin::Info> getTargetBuiltins() const override;
732 };
733 
734 // x86-64 Windows target
735 class LLVM_LIBRARY_VISIBILITY WindowsX86_64TargetInfo
736  : public WindowsTargetInfo<X86_64TargetInfo> {
737 public:
738  WindowsX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
739  : WindowsTargetInfo<X86_64TargetInfo>(Triple, Opts) {
740  LongWidth = LongAlign = 32;
741  DoubleAlign = LongLongAlign = 64;
742  IntMaxType = SignedLongLong;
743  Int64Type = SignedLongLong;
744  SizeType = UnsignedLongLong;
745  PtrDiffType = SignedLongLong;
746  IntPtrType = SignedLongLong;
747  }
748 
751  }
752 
754  switch (CC) {
755  case CC_X86StdCall:
756  case CC_X86ThisCall:
757  case CC_X86FastCall:
758  return CCCR_Ignore;
759  case CC_C:
760  case CC_X86VectorCall:
761  case CC_IntelOclBicc:
762  case CC_PreserveMost:
763  case CC_PreserveAll:
764  case CC_X86_64SysV:
765  case CC_Swift:
766  case CC_X86RegCall:
767  case CC_OpenCLKernel:
768  return CCCR_OK;
769  default:
770  return CCCR_Warning;
771  }
772  }
773 };
774 
775 // x86-64 Windows Visual Studio target
776 class LLVM_LIBRARY_VISIBILITY MicrosoftX86_64TargetInfo
777  : public WindowsX86_64TargetInfo {
778 public:
779  MicrosoftX86_64TargetInfo(const llvm::Triple &Triple,
780  const TargetOptions &Opts)
781  : WindowsX86_64TargetInfo(Triple, Opts) {
782  LongDoubleWidth = LongDoubleAlign = 64;
783  LongDoubleFormat = &llvm::APFloat::IEEEdouble();
784  }
785 
786  void getTargetDefines(const LangOptions &Opts,
787  MacroBuilder &Builder) const override {
789  Builder.defineMacro("_M_X64", "100");
790  Builder.defineMacro("_M_AMD64", "100");
791  }
792 
794  getCallingConvKind(bool ClangABICompat4) const override {
795  return CCK_MicrosoftWin64;
796  }
797 };
798 
799 // x86-64 MinGW target
800 class LLVM_LIBRARY_VISIBILITY MinGWX86_64TargetInfo
801  : public WindowsX86_64TargetInfo {
802 public:
803  MinGWX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
804  : WindowsX86_64TargetInfo(Triple, Opts) {
805  // Mingw64 rounds long double size and alignment up to 16 bytes, but sticks
806  // with x86 FP ops. Weird.
807  LongDoubleWidth = LongDoubleAlign = 128;
808  LongDoubleFormat = &llvm::APFloat::x87DoubleExtended();
809  HasFloat128 = true;
810  }
811 };
812 
813 // x86-64 Cygwin target
814 class LLVM_LIBRARY_VISIBILITY CygwinX86_64TargetInfo : public X86_64TargetInfo {
815 public:
816  CygwinX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
817  : X86_64TargetInfo(Triple, Opts) {
818  this->WCharType = TargetInfo::UnsignedShort;
819  TLSSupported = false;
820  }
821 
822  void getTargetDefines(const LangOptions &Opts,
823  MacroBuilder &Builder) const override {
824  X86_64TargetInfo::getTargetDefines(Opts, Builder);
825  Builder.defineMacro("__x86_64__");
826  Builder.defineMacro("__CYGWIN__");
827  Builder.defineMacro("__CYGWIN64__");
828  addCygMingDefines(Opts, Builder);
829  DefineStd(Builder, "unix", Opts);
830  if (Opts.CPlusPlus)
831  Builder.defineMacro("_GNU_SOURCE");
832  }
833 };
834 
835 class LLVM_LIBRARY_VISIBILITY DarwinX86_64TargetInfo
836  : public DarwinTargetInfo<X86_64TargetInfo> {
837 public:
838  DarwinX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
839  : DarwinTargetInfo<X86_64TargetInfo>(Triple, Opts) {
840  Int64Type = SignedLongLong;
841  // The 64-bit iOS simulator uses the builtin bool type for Objective-C.
842  llvm::Triple T = llvm::Triple(Triple);
843  if (T.isiOS())
844  UseSignedCharForObjCBool = false;
845  resetDataLayout("e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:"
846  "16:32:64-S128");
847  }
848 
849  bool handleTargetFeatures(std::vector<std::string> &Features,
850  DiagnosticsEngine &Diags) override {
852  Diags))
853  return false;
854  // We now know the features we have: we can decide how to align vectors.
855  MaxVectorAlign =
856  hasFeature("avx512f") ? 512 : hasFeature("avx") ? 256 : 128;
857  return true;
858  }
859 };
860 
861 class LLVM_LIBRARY_VISIBILITY OpenBSDX86_64TargetInfo
862  : public OpenBSDTargetInfo<X86_64TargetInfo> {
863 public:
864  OpenBSDX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
865  : OpenBSDTargetInfo<X86_64TargetInfo>(Triple, Opts) {
866  IntMaxType = SignedLongLong;
867  Int64Type = SignedLongLong;
868  }
869 };
870 
871 // x86_32 Android target
872 class LLVM_LIBRARY_VISIBILITY AndroidX86_32TargetInfo
873  : public LinuxTargetInfo<X86_32TargetInfo> {
874 public:
875  AndroidX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
876  : LinuxTargetInfo<X86_32TargetInfo>(Triple, Opts) {
877  SuitableAlign = 32;
878  LongDoubleWidth = 64;
879  LongDoubleFormat = &llvm::APFloat::IEEEdouble();
880  }
881 };
882 
883 // x86_64 Android target
884 class LLVM_LIBRARY_VISIBILITY AndroidX86_64TargetInfo
885  : public LinuxTargetInfo<X86_64TargetInfo> {
886 public:
887  AndroidX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
888  : LinuxTargetInfo<X86_64TargetInfo>(Triple, Opts) {
889  LongDoubleFormat = &llvm::APFloat::IEEEquad();
890  }
891 };
892 } // namespace targets
893 } // namespace clang
894 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_X86_H
const char * getClobbers() const override
Returns a string of target-specific clobbers, in LLVM format.
Definition: X86.h:217
virtual bool checkCFProtectionBranchSupported(DiagnosticsEngine &Diags) const override
Check if the target supports CFProtection branch.
Definition: X86.h:209
StringRef getConstraintRegister(StringRef Constraint, StringRef Expression) const override
Extracts a register from the passed constraint (if it is a single-register constraint) and the asm la...
Definition: X86.h:221
void setMaxAtomicWidth() override
Set the maximum inline or promote width lock-free atomic operation for the given target.
Definition: X86.h:726
uint64_t getPointerWidthV(unsigned AddrSpace) const override
Definition: X86.h:351
void DefineStd(MacroBuilder &Builder, StringRef MacroName, const LangOptions &Opts)
DefineStd - Define a macro name and standard variants.
Definition: Targets.cpp:54
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.h:519
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.h:576
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: X86.h:683
bool isValidCPUName(StringRef Name) const override
brief Determine whether this TargetInfo supports the given CPU name.
Definition: X86.h:307
virtual bool validateOperandSize(const llvm::StringMap< bool > &FeatureMap, StringRef Constraint, unsigned Size) const
Definition: X86.cpp:1750
unsigned getUnwindWordWidth() const override
Definition: X86.h:707
__builtin_va_list as defined by the x86-64 ABI: http://refspecs.linuxbase.org/elf/x86_64-abi-0.21.pdf
Definition: TargetInfo.h:248
X86TargetInfo(const llvm::Triple &Triple, const TargetOptions &)
Definition: X86.h:146
Options for controlling the target.
Definition: TargetOptions.h:26
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.h:822
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.h:620
static const unsigned X86AddrSpaceMap[]
Definition: X86.h:25
bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize, bool &HasSizeMismatch) const override
Validate register name used for global register variables.
Definition: X86.h:711
WindowsX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:738
AndroidX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:875
int getEHDataRegisterNumber(unsigned RegNo) const override
Return the register number that __builtin_eh_return_regno would return with the specified argument...
Definition: X86.h:394
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:53
unsigned getFloatEvalMethod() const override
Return the value for the C99 FLT_EVAL_METHOD macro.
Definition: X86.h:438
MicrosoftX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:779
CygwinX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:816
X86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:631
DarwinX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:838
MicrosoftX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:512
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:149
unsigned getRegisterWidth() const override
Return the "preferred" register width on this target.
Definition: X86.h:709
bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize, bool &HasSizeMismatch) const override
Validate register name used for global register variables.
Definition: X86.h:184
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: X86.h:753
bool allowsLargerPreferedTypeAlignment() const override
Whether target allows to overalign ABI-specified preferred alignment.
Definition: X86.h:607
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.h:556
Exposes information about the current target.
Definition: TargetInfo.h:164
AndroidX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:887
CallingConv getDefaultCallingConv() const override
Gets the default calling convention for the given target and declaration context. ...
Definition: X86.h:700
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: OSTargets.h:31
BuiltinVaListKind getBuiltinVaListKind() const override
Returns the kind of __builtin_va_list type that should be used with this target.
Definition: X86.h:390
CallingConv getDefaultCallingConv() const override
Gets the default calling convention for the given target and declaration context. ...
Definition: X86.h:341
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:265
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: X86.h:595
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: X86.h:321
HaikuX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:573
ArrayRef< TargetInfo::GCCRegAlias > getGCCRegAliases() const override
Definition: X86.h:163
bool setCPU(const std::string &Name) override
Target the specified CPU.
Definition: X86.h:313
CPUKind
Enumeration of all of the X86 CPUs supported by Clang.
Definition: X86.h:133
Kind
StringRef getABI() const override
Get the ABI currently in use.
Definition: X86.h:296
virtual bool checkCFProtectionReturnSupported(DiagnosticsEngine &Diags) const override
Check if the target supports CFProtection branch.
Definition: X86.h:204
void addCygMingDefines(const LangOptions &Opts, MacroBuilder &Builder)
Definition: Targets.cpp:77
bool validateOperandSize(const llvm::StringMap< bool > &FeatureMap, StringRef Constraint, unsigned Size) const override
Definition: X86.h:402
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.h:600
NetBSDI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:435
Defines the clang::TargetOptions class.
TargetInfo::CallingConvKind getCallingConvKind(bool ClangABICompat4) const override
Definition: X86.h:794
RTEMSX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:613
bool useFP16ConversionIntrinsics() const override
Check whether llvm intrinsics such as llvm.convert.to.fp16 should be used to convert to and from __fp...
Definition: X86.h:258
OpenBSDI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:452
Dataflow Directional Tag Classes.
typedef char* __builtin_va_list;
Definition: TargetInfo.h:228
BuiltinVaListKind getBuiltinVaListKind() const override
Returns the kind of __builtin_va_list type that should be used with this target.
Definition: X86.h:749
uint64_t getPointerAlignV(unsigned AddrSpace) const override
Definition: X86.h:359
BuiltinVaListKind getBuiltinVaListKind() const override
Returns the kind of __builtin_va_list type that should be used with this target.
Definition: X86.h:671
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.cpp:906
int getEHDataRegisterNumber(unsigned RegNo) const override
Return the register number that __builtin_eh_return_regno would return with the specified argument...
Definition: X86.h:675
bool handleTargetFeatures(std::vector< std::string > &Features, DiagnosticsEngine &Diags) override
handleTargetFeatures - Perform initialization based on the user configured set of features...
Definition: X86.h:849
bool hasSjLjLowering() const override
Controls if __builtin_longjmp / __builtin_setjmp can be lowered to llvm.eh.sjlj.longjmp / llvm...
Definition: X86.h:345
unsigned getFloatEvalMethod() const override
Return the value for the C99 FLT_EVAL_METHOD macro.
Definition: X86.h:156
MCUX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:586
const char * getLongDoubleMangling() const override
Return the mangled code of long double.
Definition: X86.h:152
BuiltinVaListKind
The different kinds of __builtin_va_list types defined by the target implementation.
Definition: TargetInfo.h:226
WindowsX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:496
static bool hasFeature(StringRef Feature, const LangOptions &LangOpts, const TargetInfo &Target)
Determine whether a translation unit built using the current language options has the given feature...
Definition: Module.cpp:106
bool hasInt128Type() const override
Determine whether the __int128 type is supported on this target.
Definition: X86.h:705
void setSupportedOpenCLOpts() override
Set supported OpenCL extensions and optional core features.
Definition: X86.h:347
MinGWX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:803
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.h:538
void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const override
X86TargetInfo::getTargetDefines - Return the set of the X86-specific macro definitions for this parti...
Definition: X86.h:786
Defines the clang::TargetInfo interface.
void setFeatureEnabled(llvm::StringMap< bool > &Features, StringRef Name, bool Enabled) const override
Enable or disable a specific target feature; the feature name must be valid.
Definition: X86.h:274
bool handleTargetFeatures(std::vector< std::string > &Features, DiagnosticsEngine &Diags) override
handleTargetFeatures - Perform initialization based on the user configured set of features...
Definition: X86.h:480
CygwinX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:548
OpenBSDX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:864
void defineMacro(const Twine &Name, const Twine &Value="1")
Append a #define line for macro of the form "\#define Name Value\n".
Definition: MacroBuilder.h:29
MinGWX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:533
X86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:367
DarwinI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:463
void setMaxAtomicWidth() override
Set the maximum inline or promote width lock-free atomic operation for the given target.
Definition: X86.h:424