clang  10.0.0svn
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 // X86 target abstract base class; x86-32 and x86-64 are very close, so
26 // most of the implementation can be shared.
27 class LLVM_LIBRARY_VISIBILITY X86TargetInfo : public TargetInfo {
28 
29  enum X86SSEEnum {
30  NoSSE,
31  SSE1,
32  SSE2,
33  SSE3,
34  SSSE3,
35  SSE41,
36  SSE42,
37  AVX,
38  AVX2,
39  AVX512F
40  } SSELevel = NoSSE;
41  enum MMX3DNowEnum {
42  NoMMX3DNow,
43  MMX,
44  AMD3DNow,
45  AMD3DNowAthlon
46  } MMX3DNowLevel = NoMMX3DNow;
47  enum XOPEnum { NoXOP, SSE4A, FMA4, XOP } XOPLevel = NoXOP;
48 
49  bool HasAES = false;
50  bool HasVAES = false;
51  bool HasPCLMUL = false;
52  bool HasVPCLMULQDQ = false;
53  bool HasGFNI = false;
54  bool HasLZCNT = false;
55  bool HasRDRND = false;
56  bool HasFSGSBASE = false;
57  bool HasBMI = false;
58  bool HasBMI2 = false;
59  bool HasPOPCNT = false;
60  bool HasRTM = false;
61  bool HasPRFCHW = false;
62  bool HasRDSEED = false;
63  bool HasADX = false;
64  bool HasTBM = false;
65  bool HasLWP = false;
66  bool HasFMA = false;
67  bool HasF16C = false;
68  bool HasAVX512CD = false;
69  bool HasAVX512VPOPCNTDQ = false;
70  bool HasAVX512VNNI = false;
71  bool HasAVX512BF16 = false;
72  bool HasAVX512ER = false;
73  bool HasAVX512PF = false;
74  bool HasAVX512DQ = false;
75  bool HasAVX512BITALG = false;
76  bool HasAVX512BW = false;
77  bool HasAVX512VL = false;
78  bool HasAVX512VBMI = false;
79  bool HasAVX512VBMI2 = false;
80  bool HasAVX512IFMA = false;
81  bool HasAVX512VP2INTERSECT = false;
82  bool HasSHA = false;
83  bool HasSHSTK = false;
84  bool HasSGX = false;
85  bool HasCX8 = false;
86  bool HasCX16 = false;
87  bool HasFXSR = false;
88  bool HasXSAVE = false;
89  bool HasXSAVEOPT = false;
90  bool HasXSAVEC = false;
91  bool HasXSAVES = false;
92  bool HasMWAITX = false;
93  bool HasCLZERO = false;
94  bool HasCLDEMOTE = false;
95  bool HasPCONFIG = false;
96  bool HasPKU = false;
97  bool HasCLFLUSHOPT = false;
98  bool HasCLWB = false;
99  bool HasMOVBE = false;
100  bool HasPREFETCHWT1 = false;
101  bool HasRDPID = false;
102  bool HasRetpolineExternalThunk = false;
103  bool HasLAHFSAHF = false;
104  bool HasWBNOINVD = false;
105  bool HasWAITPKG = false;
106  bool HasMOVDIRI = false;
107  bool HasMOVDIR64B = false;
108  bool HasPTWRITE = false;
109  bool HasINVPCID = false;
110  bool HasENQCMD = false;
111 
112 protected:
113  /// Enumeration of all of the X86 CPUs supported by Clang.
114  ///
115  /// Each enumeration represents a particular CPU supported by Clang. These
116  /// loosely correspond to the options passed to '-march' or '-mtune' flags.
117  enum CPUKind {
119 #define PROC(ENUM, STRING, IS64BIT) CK_##ENUM,
120 #include "clang/Basic/X86Target.def"
121  } CPU = CK_Generic;
122 
123  bool checkCPUKind(CPUKind Kind) const;
124 
125  CPUKind getCPUKind(StringRef CPU) const;
126 
127  enum FPMathKind { FP_Default, FP_SSE, FP_387 } FPMath = FP_Default;
128 
129 public:
130  X86TargetInfo(const llvm::Triple &Triple, const TargetOptions &)
131  : TargetInfo(Triple) {
132  LongDoubleFormat = &llvm::APFloat::x87DoubleExtended();
133  }
134 
135  const char *getLongDoubleMangling() const override {
136  return LongDoubleFormat == &llvm::APFloat::IEEEquad() ? "g" : "e";
137  }
138 
139  unsigned getFloatEvalMethod() const override {
140  // X87 evaluates with 80 bits "long double" precision.
141  return SSELevel == NoSSE ? 2 : 0;
142  }
143 
144  ArrayRef<const char *> getGCCRegNames() const override;
145 
147  return None;
148  }
149 
150  ArrayRef<TargetInfo::AddlRegName> getGCCAddlRegNames() const override;
151 
152  bool validateCpuSupports(StringRef Name) const override;
153 
154  bool validateCpuIs(StringRef Name) const override;
155 
156  bool validateCPUSpecificCPUDispatch(StringRef Name) const override;
157 
158  char CPUSpecificManglingCharacter(StringRef Name) const override;
159 
160  void getCPUSpecificCPUDispatchFeatures(
161  StringRef Name,
162  llvm::SmallVectorImpl<StringRef> &Features) const override;
163 
164  bool validateAsmConstraint(const char *&Name,
165  TargetInfo::ConstraintInfo &info) const override;
166 
167  bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize,
168  bool &HasSizeMismatch) const override {
169  // esp and ebp are the only 32-bit registers the x86 backend can currently
170  // handle.
171  if (RegName.equals("esp") || RegName.equals("ebp")) {
172  // Check that the register size is 32-bit.
173  HasSizeMismatch = RegSize != 32;
174  return true;
175  }
176 
177  return false;
178  }
179 
180  bool validateOutputSize(StringRef Constraint, unsigned Size) const override;
181 
182  bool validateInputSize(StringRef Constraint, unsigned Size) const override;
183 
184  virtual bool
186  return true;
187  };
188 
189  virtual bool
191  return true;
192  };
193 
194 
195  virtual bool validateOperandSize(StringRef Constraint, unsigned Size) const;
196 
197  std::string convertConstraint(const char *&Constraint) const override;
198  const char *getClobbers() const override {
199  return "~{dirflag},~{fpsr},~{flags}";
200  }
201 
202  StringRef getConstraintRegister(StringRef Constraint,
203  StringRef Expression) const override {
204  StringRef::iterator I, E;
205  for (I = Constraint.begin(), E = Constraint.end(); I != E; ++I) {
206  if (isalpha(*I) || *I == '@')
207  break;
208  }
209  if (I == E)
210  return "";
211  switch (*I) {
212  // For the register constraints, return the matching register name
213  case 'a':
214  return "ax";
215  case 'b':
216  return "bx";
217  case 'c':
218  return "cx";
219  case 'd':
220  return "dx";
221  case 'S':
222  return "si";
223  case 'D':
224  return "di";
225  // In case the constraint is 'r' we need to return Expression
226  case 'r':
227  return Expression;
228  // Double letters Y<x> constraints
229  case 'Y':
230  if ((++I != E) && ((*I == '0') || (*I == 'z')))
231  return "xmm0";
232  break;
233  default:
234  break;
235  }
236  return "";
237  }
238 
239  bool useFP16ConversionIntrinsics() const override {
240  return false;
241  }
242 
243  void getTargetDefines(const LangOptions &Opts,
244  MacroBuilder &Builder) const override;
245 
246  static void setSSELevel(llvm::StringMap<bool> &Features, X86SSEEnum Level,
247  bool Enabled);
248 
249  static void setMMXLevel(llvm::StringMap<bool> &Features, MMX3DNowEnum Level,
250  bool Enabled);
251 
252  static void setXOPLevel(llvm::StringMap<bool> &Features, XOPEnum Level,
253  bool Enabled);
254 
255  void setFeatureEnabled(llvm::StringMap<bool> &Features, StringRef Name,
256  bool Enabled) const override {
257  setFeatureEnabledImpl(Features, Name, Enabled);
258  }
259 
260  // This exists purely to cut down on the number of virtual calls in
261  // initFeatureMap which calls this repeatedly.
262  static void setFeatureEnabledImpl(llvm::StringMap<bool> &Features,
263  StringRef Name, bool Enabled);
264 
265  bool
266  initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
267  StringRef CPU,
268  const std::vector<std::string> &FeaturesVec) const override;
269 
270  bool isValidFeatureName(StringRef Name) const override;
271 
272  bool hasFeature(StringRef Feature) const override;
273 
274  bool handleTargetFeatures(std::vector<std::string> &Features,
275  DiagnosticsEngine &Diags) override;
276 
277  StringRef getABI() const override {
278  if (getTriple().getArch() == llvm::Triple::x86_64 && SSELevel >= AVX512F)
279  return "avx512";
280  if (getTriple().getArch() == llvm::Triple::x86_64 && SSELevel >= AVX)
281  return "avx";
282  if (getTriple().getArch() == llvm::Triple::x86 &&
283  MMX3DNowLevel == NoMMX3DNow)
284  return "no-mmx";
285  return "";
286  }
287 
288  bool isValidCPUName(StringRef Name) const override {
289  return checkCPUKind(getCPUKind(Name));
290  }
291 
292  void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
293 
294  bool setCPU(const std::string &Name) override {
295  return checkCPUKind(CPU = getCPUKind(Name));
296  }
297 
298  unsigned multiVersionSortPriority(StringRef Name) const override;
299 
300  bool setFPMath(StringRef Name) override;
301 
303  // Most of the non-ARM calling conventions are i386 conventions.
304  switch (CC) {
305  case CC_X86ThisCall:
306  case CC_X86FastCall:
307  case CC_X86StdCall:
308  case CC_X86VectorCall:
309  case CC_X86RegCall:
310  case CC_C:
311  case CC_PreserveMost:
312  case CC_Swift:
313  case CC_X86Pascal:
314  case CC_IntelOclBicc:
315  case CC_OpenCLKernel:
316  return CCCR_OK;
317  default:
318  return CCCR_Warning;
319  }
320  }
321 
323  return CC_C;
324  }
325 
326  bool hasSjLjLowering() const override { return true; }
327 
328  void setSupportedOpenCLOpts() override {
329  getSupportedOpenCLOpts().supportAll();
330  }
331 };
332 
333 // X86-32 generic target
334 class LLVM_LIBRARY_VISIBILITY X86_32TargetInfo : public X86TargetInfo {
335 public:
336  X86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
337  : X86TargetInfo(Triple, Opts) {
338  DoubleAlign = LongLongAlign = 32;
339  LongDoubleWidth = 96;
340  LongDoubleAlign = 32;
341  SuitableAlign = 128;
342  resetDataLayout("e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-"
343  "f80:32-n8:16:32-S128");
344  SizeType = UnsignedInt;
345  PtrDiffType = SignedInt;
346  IntPtrType = SignedInt;
347  RegParmMax = 3;
348 
349  // Use fpret for all types.
350  RealTypeUsesObjCFPRet =
351  ((1 << TargetInfo::Float) | (1 << TargetInfo::Double) |
352  (1 << TargetInfo::LongDouble));
353 
354  // x86-32 has atomics up to 8 bytes
355  MaxAtomicPromoteWidth = 64;
356  MaxAtomicInlineWidth = 32;
357  }
358 
361  }
362 
363  int getEHDataRegisterNumber(unsigned RegNo) const override {
364  if (RegNo == 0)
365  return 0;
366  if (RegNo == 1)
367  return 2;
368  return -1;
369  }
370 
371  bool validateOperandSize(StringRef Constraint, unsigned Size) const override {
372  switch (Constraint[0]) {
373  default:
374  break;
375  case 'R':
376  case 'q':
377  case 'Q':
378  case 'a':
379  case 'b':
380  case 'c':
381  case 'd':
382  case 'S':
383  case 'D':
384  return Size <= 32;
385  case 'A':
386  return Size <= 64;
387  }
388 
389  return X86TargetInfo::validateOperandSize(Constraint, Size);
390  }
391 
392  void setMaxAtomicWidth() override {
393  if (hasFeature("cx8"))
394  MaxAtomicInlineWidth = 64;
395  }
396 
397  ArrayRef<Builtin::Info> getTargetBuiltins() const override;
398 };
399 
400 class LLVM_LIBRARY_VISIBILITY NetBSDI386TargetInfo
401  : public NetBSDTargetInfo<X86_32TargetInfo> {
402 public:
403  NetBSDI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
404  : NetBSDTargetInfo<X86_32TargetInfo>(Triple, Opts) {}
405 
406  unsigned getFloatEvalMethod() const override {
407  unsigned Major, Minor, Micro;
408  getTriple().getOSVersion(Major, Minor, Micro);
409  // New NetBSD uses the default rounding mode.
410  if (Major >= 7 || (Major == 6 && Minor == 99 && Micro >= 26) || Major == 0)
412  // NetBSD before 6.99.26 defaults to "double" rounding.
413  return 1;
414  }
415 };
416 
417 class LLVM_LIBRARY_VISIBILITY OpenBSDI386TargetInfo
418  : public OpenBSDTargetInfo<X86_32TargetInfo> {
419 public:
420  OpenBSDI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
421  : OpenBSDTargetInfo<X86_32TargetInfo>(Triple, Opts) {
422  SizeType = UnsignedLong;
423  IntPtrType = SignedLong;
424  PtrDiffType = SignedLong;
425  }
426 };
427 
428 class LLVM_LIBRARY_VISIBILITY DarwinI386TargetInfo
429  : public DarwinTargetInfo<X86_32TargetInfo> {
430 public:
431  DarwinI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
432  : DarwinTargetInfo<X86_32TargetInfo>(Triple, Opts) {
433  LongDoubleWidth = 128;
434  LongDoubleAlign = 128;
435  SuitableAlign = 128;
436  MaxVectorAlign = 256;
437  // The watchOS simulator uses the builtin bool type for Objective-C.
438  llvm::Triple T = llvm::Triple(Triple);
439  if (T.isWatchOS())
440  UseSignedCharForObjCBool = false;
441  SizeType = UnsignedLong;
442  IntPtrType = SignedLong;
443  resetDataLayout("e-m:o-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-"
444  "f80:128-n8:16:32-S128");
445  HasAlignMac68kSupport = true;
446  }
447 
448  bool handleTargetFeatures(std::vector<std::string> &Features,
449  DiagnosticsEngine &Diags) override {
451  Diags))
452  return false;
453  // We now know the features we have: we can decide how to align vectors.
454  MaxVectorAlign =
455  hasFeature("avx512f") ? 512 : hasFeature("avx") ? 256 : 128;
456  return true;
457  }
458 };
459 
460 // x86-32 Windows target
461 class LLVM_LIBRARY_VISIBILITY WindowsX86_32TargetInfo
462  : public WindowsTargetInfo<X86_32TargetInfo> {
463 public:
464  WindowsX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
465  : WindowsTargetInfo<X86_32TargetInfo>(Triple, Opts) {
466  DoubleAlign = LongLongAlign = 64;
467  bool IsWinCOFF =
468  getTriple().isOSWindows() && getTriple().isOSBinFormatCOFF();
469  resetDataLayout(IsWinCOFF ? "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:"
470  "64-i64:64-f80:32-n8:16:32-a:0:32-S32"
471  : "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:"
472  "64-i64:64-f80:32-n8:16:32-a:0:32-S32");
473  }
474 };
475 
476 // x86-32 Windows Visual Studio target
477 class LLVM_LIBRARY_VISIBILITY MicrosoftX86_32TargetInfo
478  : public WindowsX86_32TargetInfo {
479 public:
480  MicrosoftX86_32TargetInfo(const llvm::Triple &Triple,
481  const TargetOptions &Opts)
482  : WindowsX86_32TargetInfo(Triple, Opts) {
483  LongDoubleWidth = LongDoubleAlign = 64;
484  LongDoubleFormat = &llvm::APFloat::IEEEdouble();
485  }
486 
487  void getTargetDefines(const LangOptions &Opts,
488  MacroBuilder &Builder) const override {
490  // The value of the following reflects processor type.
491  // 300=386, 400=486, 500=Pentium, 600=Blend (default)
492  // We lost the original triple, so we use the default.
493  Builder.defineMacro("_M_IX86", "600");
494  }
495 };
496 
497 // x86-32 MinGW target
498 class LLVM_LIBRARY_VISIBILITY MinGWX86_32TargetInfo
499  : public WindowsX86_32TargetInfo {
500 public:
501  MinGWX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
502  : WindowsX86_32TargetInfo(Triple, Opts) {
503  HasFloat128 = true;
504  }
505 
506  void getTargetDefines(const LangOptions &Opts,
507  MacroBuilder &Builder) const override {
509  Builder.defineMacro("_X86_");
510  }
511 };
512 
513 // x86-32 Cygwin target
514 class LLVM_LIBRARY_VISIBILITY CygwinX86_32TargetInfo : public X86_32TargetInfo {
515 public:
516  CygwinX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
517  : X86_32TargetInfo(Triple, Opts) {
518  this->WCharType = TargetInfo::UnsignedShort;
519  DoubleAlign = LongLongAlign = 64;
520  resetDataLayout("e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:"
521  "32-n8:16:32-a:0:32-S32");
522  }
523 
524  void getTargetDefines(const LangOptions &Opts,
525  MacroBuilder &Builder) const override {
526  X86_32TargetInfo::getTargetDefines(Opts, Builder);
527  Builder.defineMacro("_X86_");
528  Builder.defineMacro("__CYGWIN__");
529  Builder.defineMacro("__CYGWIN32__");
530  addCygMingDefines(Opts, Builder);
531  DefineStd(Builder, "unix", Opts);
532  if (Opts.CPlusPlus)
533  Builder.defineMacro("_GNU_SOURCE");
534  }
535 };
536 
537 // x86-32 Haiku target
538 class LLVM_LIBRARY_VISIBILITY HaikuX86_32TargetInfo
539  : public HaikuTargetInfo<X86_32TargetInfo> {
540 public:
541  HaikuX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
542  : HaikuTargetInfo<X86_32TargetInfo>(Triple, Opts) {}
543 
544  void getTargetDefines(const LangOptions &Opts,
545  MacroBuilder &Builder) const override {
547  Builder.defineMacro("__INTEL__");
548  }
549 };
550 
551 // X86-32 MCU target
552 class LLVM_LIBRARY_VISIBILITY MCUX86_32TargetInfo : public X86_32TargetInfo {
553 public:
554  MCUX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
555  : X86_32TargetInfo(Triple, Opts) {
556  LongDoubleWidth = 64;
557  LongDoubleFormat = &llvm::APFloat::IEEEdouble();
558  resetDataLayout("e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:32-f64:"
559  "32-f128:32-n8:16:32-a:0:32-S32");
560  WIntType = UnsignedInt;
561  }
562 
564  // On MCU we support only C calling convention.
565  return CC == CC_C ? CCCR_OK : CCCR_Warning;
566  }
567 
568  void getTargetDefines(const LangOptions &Opts,
569  MacroBuilder &Builder) const override {
570  X86_32TargetInfo::getTargetDefines(Opts, Builder);
571  Builder.defineMacro("__iamcu");
572  Builder.defineMacro("__iamcu__");
573  }
574 
575  bool allowsLargerPreferedTypeAlignment() const override { return false; }
576 };
577 
578 // x86-32 RTEMS target
579 class LLVM_LIBRARY_VISIBILITY RTEMSX86_32TargetInfo : public X86_32TargetInfo {
580 public:
581  RTEMSX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
582  : X86_32TargetInfo(Triple, Opts) {
583  SizeType = UnsignedLong;
584  IntPtrType = SignedLong;
585  PtrDiffType = SignedLong;
586  }
587 
588  void getTargetDefines(const LangOptions &Opts,
589  MacroBuilder &Builder) const override {
590  X86_32TargetInfo::getTargetDefines(Opts, Builder);
591  Builder.defineMacro("__INTEL__");
592  Builder.defineMacro("__rtems__");
593  }
594 };
595 
596 // x86-64 generic target
597 class LLVM_LIBRARY_VISIBILITY X86_64TargetInfo : public X86TargetInfo {
598 public:
599  X86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
600  : X86TargetInfo(Triple, Opts) {
601  const bool IsX32 = getTriple().getEnvironment() == llvm::Triple::GNUX32;
602  bool IsWinCOFF =
603  getTriple().isOSWindows() && getTriple().isOSBinFormatCOFF();
604  LongWidth = LongAlign = PointerWidth = PointerAlign = IsX32 ? 32 : 64;
605  LongDoubleWidth = 128;
606  LongDoubleAlign = 128;
607  LargeArrayMinWidth = 128;
608  LargeArrayAlign = 128;
609  SuitableAlign = 128;
610  SizeType = IsX32 ? UnsignedInt : UnsignedLong;
611  PtrDiffType = IsX32 ? SignedInt : SignedLong;
612  IntPtrType = IsX32 ? SignedInt : SignedLong;
613  IntMaxType = IsX32 ? SignedLongLong : SignedLong;
614  Int64Type = IsX32 ? SignedLongLong : SignedLong;
615  RegParmMax = 6;
616 
617  // Pointers are 32-bit in x32.
618  resetDataLayout(IsX32 ? "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-"
619  "i64:64-f80:128-n8:16:32:64-S128"
620  : IsWinCOFF ? "e-m:w-p270:32:32-p271:32:32-p272:64:"
621  "64-i64:64-f80:128-n8:16:32:64-S128"
622  : "e-m:e-p270:32:32-p271:32:32-p272:64:"
623  "64-i64:64-f80:128-n8:16:32:64-S128");
624 
625  // Use fpret only for long double.
626  RealTypeUsesObjCFPRet = (1 << TargetInfo::LongDouble);
627 
628  // Use fp2ret for _Complex long double.
629  ComplexLongDoubleUsesFP2Ret = true;
630 
631  // Make __builtin_ms_va_list available.
632  HasBuiltinMSVaList = true;
633 
634  // x86-64 has atomics up to 16 bytes.
635  MaxAtomicPromoteWidth = 128;
636  MaxAtomicInlineWidth = 64;
637  }
638 
641  }
642 
643  int getEHDataRegisterNumber(unsigned RegNo) const override {
644  if (RegNo == 0)
645  return 0;
646  if (RegNo == 1)
647  return 1;
648  return -1;
649  }
650 
652  switch (CC) {
653  case CC_C:
654  case CC_Swift:
655  case CC_X86VectorCall:
656  case CC_IntelOclBicc:
657  case CC_Win64:
658  case CC_PreserveMost:
659  case CC_PreserveAll:
660  case CC_X86RegCall:
661  case CC_OpenCLKernel:
662  return CCCR_OK;
663  default:
664  return CCCR_Warning;
665  }
666  }
667 
669  return CC_C;
670  }
671 
672  // for x32 we need it here explicitly
673  bool hasInt128Type() const override { return true; }
674 
675  unsigned getUnwindWordWidth() const override { return 64; }
676 
677  unsigned getRegisterWidth() const override { return 64; }
678 
679  bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize,
680  bool &HasSizeMismatch) const override {
681  // rsp and rbp are the only 64-bit registers the x86 backend can currently
682  // handle.
683  if (RegName.equals("rsp") || RegName.equals("rbp")) {
684  // Check that the register size is 64-bit.
685  HasSizeMismatch = RegSize != 64;
686  return true;
687  }
688 
689  // Check if the register is a 32-bit register the backend can handle.
690  return X86TargetInfo::validateGlobalRegisterVariable(RegName, RegSize,
691  HasSizeMismatch);
692  }
693 
694  void setMaxAtomicWidth() override {
695  if (hasFeature("cx16"))
696  MaxAtomicInlineWidth = 128;
697  }
698 
699  ArrayRef<Builtin::Info> getTargetBuiltins() const override;
700 };
701 
702 // x86-64 Windows target
703 class LLVM_LIBRARY_VISIBILITY WindowsX86_64TargetInfo
704  : public WindowsTargetInfo<X86_64TargetInfo> {
705 public:
706  WindowsX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
707  : WindowsTargetInfo<X86_64TargetInfo>(Triple, Opts) {
708  LongWidth = LongAlign = 32;
709  DoubleAlign = LongLongAlign = 64;
710  IntMaxType = SignedLongLong;
711  Int64Type = SignedLongLong;
712  SizeType = UnsignedLongLong;
713  PtrDiffType = SignedLongLong;
714  IntPtrType = SignedLongLong;
715  }
716 
719  }
720 
722  switch (CC) {
723  case CC_X86StdCall:
724  case CC_X86ThisCall:
725  case CC_X86FastCall:
726  return CCCR_Ignore;
727  case CC_C:
728  case CC_X86VectorCall:
729  case CC_IntelOclBicc:
730  case CC_PreserveMost:
731  case CC_PreserveAll:
732  case CC_X86_64SysV:
733  case CC_Swift:
734  case CC_X86RegCall:
735  case CC_OpenCLKernel:
736  return CCCR_OK;
737  default:
738  return CCCR_Warning;
739  }
740  }
741 };
742 
743 // x86-64 Windows Visual Studio target
744 class LLVM_LIBRARY_VISIBILITY MicrosoftX86_64TargetInfo
745  : public WindowsX86_64TargetInfo {
746 public:
747  MicrosoftX86_64TargetInfo(const llvm::Triple &Triple,
748  const TargetOptions &Opts)
749  : WindowsX86_64TargetInfo(Triple, Opts) {
750  LongDoubleWidth = LongDoubleAlign = 64;
751  LongDoubleFormat = &llvm::APFloat::IEEEdouble();
752  }
753 
754  void getTargetDefines(const LangOptions &Opts,
755  MacroBuilder &Builder) const override {
757  Builder.defineMacro("_M_X64", "100");
758  Builder.defineMacro("_M_AMD64", "100");
759  }
760 
762  getCallingConvKind(bool ClangABICompat4) const override {
763  return CCK_MicrosoftWin64;
764  }
765 };
766 
767 // x86-64 MinGW target
768 class LLVM_LIBRARY_VISIBILITY MinGWX86_64TargetInfo
769  : public WindowsX86_64TargetInfo {
770 public:
771  MinGWX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
772  : WindowsX86_64TargetInfo(Triple, Opts) {
773  // Mingw64 rounds long double size and alignment up to 16 bytes, but sticks
774  // with x86 FP ops. Weird.
775  LongDoubleWidth = LongDoubleAlign = 128;
776  LongDoubleFormat = &llvm::APFloat::x87DoubleExtended();
777  HasFloat128 = true;
778  }
779 };
780 
781 // x86-64 Cygwin target
782 class LLVM_LIBRARY_VISIBILITY CygwinX86_64TargetInfo : public X86_64TargetInfo {
783 public:
784  CygwinX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
785  : X86_64TargetInfo(Triple, Opts) {
786  this->WCharType = TargetInfo::UnsignedShort;
787  TLSSupported = false;
788  }
789 
790  void getTargetDefines(const LangOptions &Opts,
791  MacroBuilder &Builder) const override {
792  X86_64TargetInfo::getTargetDefines(Opts, Builder);
793  Builder.defineMacro("__x86_64__");
794  Builder.defineMacro("__CYGWIN__");
795  Builder.defineMacro("__CYGWIN64__");
796  addCygMingDefines(Opts, Builder);
797  DefineStd(Builder, "unix", Opts);
798  if (Opts.CPlusPlus)
799  Builder.defineMacro("_GNU_SOURCE");
800  }
801 };
802 
803 class LLVM_LIBRARY_VISIBILITY DarwinX86_64TargetInfo
804  : public DarwinTargetInfo<X86_64TargetInfo> {
805 public:
806  DarwinX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
807  : DarwinTargetInfo<X86_64TargetInfo>(Triple, Opts) {
808  Int64Type = SignedLongLong;
809  // The 64-bit iOS simulator uses the builtin bool type for Objective-C.
810  llvm::Triple T = llvm::Triple(Triple);
811  if (T.isiOS())
812  UseSignedCharForObjCBool = false;
813  resetDataLayout("e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:"
814  "16:32:64-S128");
815  }
816 
817  bool handleTargetFeatures(std::vector<std::string> &Features,
818  DiagnosticsEngine &Diags) override {
820  Diags))
821  return false;
822  // We now know the features we have: we can decide how to align vectors.
823  MaxVectorAlign =
824  hasFeature("avx512f") ? 512 : hasFeature("avx") ? 256 : 128;
825  return true;
826  }
827 };
828 
829 class LLVM_LIBRARY_VISIBILITY OpenBSDX86_64TargetInfo
830  : public OpenBSDTargetInfo<X86_64TargetInfo> {
831 public:
832  OpenBSDX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
833  : OpenBSDTargetInfo<X86_64TargetInfo>(Triple, Opts) {
834  IntMaxType = SignedLongLong;
835  Int64Type = SignedLongLong;
836  }
837 };
838 
839 // x86_32 Android target
840 class LLVM_LIBRARY_VISIBILITY AndroidX86_32TargetInfo
841  : public LinuxTargetInfo<X86_32TargetInfo> {
842 public:
843  AndroidX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
844  : LinuxTargetInfo<X86_32TargetInfo>(Triple, Opts) {
845  SuitableAlign = 32;
846  LongDoubleWidth = 64;
847  LongDoubleFormat = &llvm::APFloat::IEEEdouble();
848  }
849 };
850 
851 // x86_64 Android target
852 class LLVM_LIBRARY_VISIBILITY AndroidX86_64TargetInfo
853  : public LinuxTargetInfo<X86_64TargetInfo> {
854 public:
855  AndroidX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
856  : LinuxTargetInfo<X86_64TargetInfo>(Triple, Opts) {
857  LongDoubleFormat = &llvm::APFloat::IEEEquad();
858  }
859 };
860 } // namespace targets
861 } // namespace clang
862 #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:198
virtual bool checkCFProtectionBranchSupported(DiagnosticsEngine &Diags) const override
Check if the target supports CFProtection branch.
Definition: X86.h:190
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:202
void setMaxAtomicWidth() override
Set the maximum inline or promote width lock-free atomic operation for the given target.
Definition: X86.h:694
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:487
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:544
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: X86.h:651
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 isValidCPUName(StringRef Name) const override
brief Determine whether this TargetInfo supports the given CPU name.
Definition: X86.h:288
unsigned getUnwindWordWidth() const override
Definition: X86.h:675
__builtin_va_list as defined by the x86-64 ABI: http://refspecs.linuxbase.org/elf/x86_64-abi-0.21.pdf
Definition: TargetInfo.h:247
X86TargetInfo(const llvm::Triple &Triple, const TargetOptions &)
Definition: X86.h:130
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:790
virtual bool validateOperandSize(StringRef Constraint, unsigned Size) const
Definition: X86.cpp:1743
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:588
bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize, bool &HasSizeMismatch) const override
Validate register name used for global register variables.
Definition: X86.h:679
WindowsX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:706
AndroidX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:843
int getEHDataRegisterNumber(unsigned RegNo) const override
Return the register number that __builtin_eh_return_regno would return with the specified argument...
Definition: X86.h:363
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:49
unsigned getFloatEvalMethod() const override
Return the value for the C99 FLT_EVAL_METHOD macro.
Definition: X86.h:406
MicrosoftX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:747
CygwinX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:784
X86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:599
DarwinX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:806
MicrosoftX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:480
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:677
bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize, bool &HasSizeMismatch) const override
Validate register name used for global register variables.
Definition: X86.h:167
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: X86.h:721
bool allowsLargerPreferedTypeAlignment() const override
Whether target allows to overalign ABI-specified preferred alignment.
Definition: X86.h:575
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:524
Exposes information about the current target.
Definition: TargetInfo.h:163
AndroidX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:855
CallingConv getDefaultCallingConv() const override
Gets the default calling convention for the given target and declaration context. ...
Definition: X86.h:668
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:359
CallingConv getDefaultCallingConv() const override
Gets the default calling convention for the given target and declaration context. ...
Definition: X86.h:322
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:563
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override
Determines whether a given calling convention is valid for the target.
Definition: X86.h:302
HaikuX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:541
ArrayRef< TargetInfo::GCCRegAlias > getGCCRegAliases() const override
Definition: X86.h:146
bool setCPU(const std::string &Name) override
Target the specified CPU.
Definition: X86.h:294
CPUKind
Enumeration of all of the X86 CPUs supported by Clang.
Definition: X86.h:117
Kind
StringRef getABI() const override
Get the ABI currently in use.
Definition: X86.h:277
virtual bool checkCFProtectionReturnSupported(DiagnosticsEngine &Diags) const override
Check if the target supports CFProtection branch.
Definition: X86.h:185
void addCygMingDefines(const LangOptions &Opts, MacroBuilder &Builder)
Definition: Targets.cpp:77
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:568
NetBSDI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:403
Defines the clang::TargetOptions class.
TargetInfo::CallingConvKind getCallingConvKind(bool ClangABICompat4) const override
Definition: X86.h:762
RTEMSX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:581
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:239
OpenBSDI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:420
Dataflow Directional Tag Classes.
typedef char* __builtin_va_list;
Definition: TargetInfo.h:227
BuiltinVaListKind getBuiltinVaListKind() const override
Returns the kind of __builtin_va_list type that should be used with this target.
Definition: X86.h:717
bool validateOperandSize(StringRef Constraint, unsigned Size) const override
Definition: X86.h:371
BuiltinVaListKind getBuiltinVaListKind() const override
Returns the kind of __builtin_va_list type that should be used with this target.
Definition: X86.h:639
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:901
int getEHDataRegisterNumber(unsigned RegNo) const override
Return the register number that __builtin_eh_return_regno would return with the specified argument...
Definition: X86.h:643
bool handleTargetFeatures(std::vector< std::string > &Features, DiagnosticsEngine &Diags) override
handleTargetFeatures - Perform initialization based on the user configured set of features...
Definition: X86.h:817
bool hasSjLjLowering() const override
Controls if __builtin_longjmp / __builtin_setjmp can be lowered to llvm.eh.sjlj.longjmp / llvm...
Definition: X86.h:326
unsigned getFloatEvalMethod() const override
Return the value for the C99 FLT_EVAL_METHOD macro.
Definition: X86.h:139
MCUX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:554
const char * getLongDoubleMangling() const override
Return the mangled code of long double.
Definition: X86.h:135
BuiltinVaListKind
The different kinds of __builtin_va_list types defined by the target implementation.
Definition: TargetInfo.h:225
WindowsX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:464
bool hasInt128Type() const override
Determine whether the __int128 type is supported on this target.
Definition: X86.h:673
void setSupportedOpenCLOpts() override
Set supported OpenCL extensions and optional core features.
Definition: X86.h:328
MinGWX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:771
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:506
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:754
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:255
bool handleTargetFeatures(std::vector< std::string > &Features, DiagnosticsEngine &Diags) override
handleTargetFeatures - Perform initialization based on the user configured set of features...
Definition: X86.h:448
CygwinX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:516
OpenBSDX86_64TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:832
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:501
X86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:336
DarwinI386TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
Definition: X86.h:431
void setMaxAtomicWidth() override
Set the maximum inline or promote width lock-free atomic operation for the given target.
Definition: X86.h:392