clang  11.0.0git
InitPreprocessor.cpp
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1 //===--- InitPreprocessor.cpp - PP initialization code. ---------*- 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 implements the clang::InitializePreprocessor function.
10 //
11 //===----------------------------------------------------------------------===//
12 
16 #include "clang/Basic/SyncScope.h"
17 #include "clang/Basic/TargetInfo.h"
18 #include "clang/Basic/Version.h"
21 #include "clang/Frontend/Utils.h"
22 #include "clang/Lex/HeaderSearch.h"
23 #include "clang/Lex/Preprocessor.h"
26 #include "llvm/ADT/APFloat.h"
27 #include "llvm/IR/DataLayout.h"
28 using namespace clang;
29 
30 static bool MacroBodyEndsInBackslash(StringRef MacroBody) {
31  while (!MacroBody.empty() && isWhitespace(MacroBody.back()))
32  MacroBody = MacroBody.drop_back();
33  return !MacroBody.empty() && MacroBody.back() == '\\';
34 }
35 
36 // Append a #define line to Buf for Macro. Macro should be of the form XXX,
37 // in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
38 // "#define XXX Y z W". To get a #define with no value, use "XXX=".
39 static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro,
40  DiagnosticsEngine &Diags) {
41  std::pair<StringRef, StringRef> MacroPair = Macro.split('=');
42  StringRef MacroName = MacroPair.first;
43  StringRef MacroBody = MacroPair.second;
44  if (MacroName.size() != Macro.size()) {
45  // Per GCC -D semantics, the macro ends at \n if it exists.
46  StringRef::size_type End = MacroBody.find_first_of("\n\r");
47  if (End != StringRef::npos)
48  Diags.Report(diag::warn_fe_macro_contains_embedded_newline)
49  << MacroName;
50  MacroBody = MacroBody.substr(0, End);
51  // We handle macro bodies which end in a backslash by appending an extra
52  // backslash+newline. This makes sure we don't accidentally treat the
53  // backslash as a line continuation marker.
54  if (MacroBodyEndsInBackslash(MacroBody))
55  Builder.defineMacro(MacroName, Twine(MacroBody) + "\\\n");
56  else
57  Builder.defineMacro(MacroName, MacroBody);
58  } else {
59  // Push "macroname 1".
60  Builder.defineMacro(Macro);
61  }
62 }
63 
64 /// AddImplicitInclude - Add an implicit \#include of the specified file to the
65 /// predefines buffer.
66 /// As these includes are generated by -include arguments the header search
67 /// logic is going to search relatively to the current working directory.
68 static void AddImplicitInclude(MacroBuilder &Builder, StringRef File) {
69  Builder.append(Twine("#include \"") + File + "\"");
70 }
71 
72 static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) {
73  Builder.append(Twine("#__include_macros \"") + File + "\"");
74  // Marker token to stop the __include_macros fetch loop.
75  Builder.append("##"); // ##?
76 }
77 
78 /// Add an implicit \#include using the original file used to generate
79 /// a PCH file.
81  const PCHContainerReader &PCHContainerRdr,
82  StringRef ImplicitIncludePCH) {
83  std::string OriginalFile = ASTReader::getOriginalSourceFile(
84  std::string(ImplicitIncludePCH), PP.getFileManager(), PCHContainerRdr,
85  PP.getDiagnostics());
86  if (OriginalFile.empty())
87  return;
88 
89  AddImplicitInclude(Builder, OriginalFile);
90 }
91 
92 /// PickFP - This is used to pick a value based on the FP semantics of the
93 /// specified FP model.
94 template <typename T>
95 static T PickFP(const llvm::fltSemantics *Sem, T IEEEHalfVal, T IEEESingleVal,
96  T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
97  T IEEEQuadVal) {
98  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEhalf())
99  return IEEEHalfVal;
100  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle())
101  return IEEESingleVal;
102  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble())
103  return IEEEDoubleVal;
104  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended())
105  return X87DoubleExtendedVal;
106  if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble())
107  return PPCDoubleDoubleVal;
108  assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad());
109  return IEEEQuadVal;
110 }
111 
112 static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
113  const llvm::fltSemantics *Sem, StringRef Ext) {
114  const char *DenormMin, *Epsilon, *Max, *Min;
115  DenormMin = PickFP(Sem, "5.9604644775390625e-8", "1.40129846e-45",
116  "4.9406564584124654e-324", "3.64519953188247460253e-4951",
117  "4.94065645841246544176568792868221e-324",
118  "6.47517511943802511092443895822764655e-4966");
119  int Digits = PickFP(Sem, 3, 6, 15, 18, 31, 33);
120  int DecimalDigits = PickFP(Sem, 5, 9, 17, 21, 33, 36);
121  Epsilon = PickFP(Sem, "9.765625e-4", "1.19209290e-7",
122  "2.2204460492503131e-16", "1.08420217248550443401e-19",
123  "4.94065645841246544176568792868221e-324",
124  "1.92592994438723585305597794258492732e-34");
125  int MantissaDigits = PickFP(Sem, 11, 24, 53, 64, 106, 113);
126  int Min10Exp = PickFP(Sem, -4, -37, -307, -4931, -291, -4931);
127  int Max10Exp = PickFP(Sem, 4, 38, 308, 4932, 308, 4932);
128  int MinExp = PickFP(Sem, -13, -125, -1021, -16381, -968, -16381);
129  int MaxExp = PickFP(Sem, 16, 128, 1024, 16384, 1024, 16384);
130  Min = PickFP(Sem, "6.103515625e-5", "1.17549435e-38", "2.2250738585072014e-308",
131  "3.36210314311209350626e-4932",
132  "2.00416836000897277799610805135016e-292",
133  "3.36210314311209350626267781732175260e-4932");
134  Max = PickFP(Sem, "6.5504e+4", "3.40282347e+38", "1.7976931348623157e+308",
135  "1.18973149535723176502e+4932",
136  "1.79769313486231580793728971405301e+308",
137  "1.18973149535723176508575932662800702e+4932");
138 
139  SmallString<32> DefPrefix;
140  DefPrefix = "__";
141  DefPrefix += Prefix;
142  DefPrefix += "_";
143 
144  Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext);
145  Builder.defineMacro(DefPrefix + "HAS_DENORM__");
146  Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits));
147  Builder.defineMacro(DefPrefix + "DECIMAL_DIG__", Twine(DecimalDigits));
148  Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext);
149  Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
150  Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
151  Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits));
152 
153  Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp));
154  Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp));
155  Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext);
156 
157  Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")");
158  Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")");
159  Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext);
160 }
161 
162 
163 /// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro
164 /// named MacroName with the max value for a type with width 'TypeWidth' a
165 /// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL).
166 static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth,
167  StringRef ValSuffix, bool isSigned,
168  MacroBuilder &Builder) {
169  llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth)
170  : llvm::APInt::getMaxValue(TypeWidth);
171  Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix);
172 }
173 
174 /// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
175 /// the width, suffix, and signedness of the given type
176 static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty,
177  const TargetInfo &TI, MacroBuilder &Builder) {
178  DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
179  TI.isTypeSigned(Ty), Builder);
180 }
181 
182 static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty,
183  const TargetInfo &TI, MacroBuilder &Builder) {
184  bool IsSigned = TI.isTypeSigned(Ty);
185  StringRef FmtModifier = TI.getTypeFormatModifier(Ty);
186  for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) {
187  Builder.defineMacro(Prefix + "_FMT" + Twine(*Fmt) + "__",
188  Twine("\"") + FmtModifier + Twine(*Fmt) + "\"");
189  }
190 }
191 
192 static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
193  MacroBuilder &Builder) {
194  Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
195 }
196 
197 static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty,
198  const TargetInfo &TI, MacroBuilder &Builder) {
199  Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty)));
200 }
201 
202 static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth,
203  const TargetInfo &TI, MacroBuilder &Builder) {
204  Builder.defineMacro(MacroName,
205  Twine(BitWidth / TI.getCharWidth()));
206 }
207 
209  const TargetInfo &TI,
210  MacroBuilder &Builder) {
211  int TypeWidth = TI.getTypeWidth(Ty);
212  bool IsSigned = TI.isTypeSigned(Ty);
213 
214  // Use the target specified int64 type, when appropriate, so that [u]int64_t
215  // ends up being defined in terms of the correct type.
216  if (TypeWidth == 64)
217  Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
218 
219  const char *Prefix = IsSigned ? "__INT" : "__UINT";
220 
221  DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
222  DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
223 
224  StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty));
225  Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
226 }
227 
229  const TargetInfo &TI,
230  MacroBuilder &Builder) {
231  int TypeWidth = TI.getTypeWidth(Ty);
232  bool IsSigned = TI.isTypeSigned(Ty);
233 
234  // Use the target specified int64 type, when appropriate, so that [u]int64_t
235  // ends up being defined in terms of the correct type.
236  if (TypeWidth == 64)
237  Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
238 
239  const char *Prefix = IsSigned ? "__INT" : "__UINT";
240  DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
241 }
242 
243 static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned,
244  const TargetInfo &TI,
245  MacroBuilder &Builder) {
246  TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
247  if (Ty == TargetInfo::NoInt)
248  return;
249 
250  const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST";
251  DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
252  DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
253  DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
254 }
255 
256 static void DefineFastIntType(unsigned TypeWidth, bool IsSigned,
257  const TargetInfo &TI, MacroBuilder &Builder) {
258  // stdint.h currently defines the fast int types as equivalent to the least
259  // types.
260  TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
261  if (Ty == TargetInfo::NoInt)
262  return;
263 
264  const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST";
265  DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
266  DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
267 
268  DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
269 }
270 
271 
272 /// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with
273 /// the specified properties.
274 static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign,
275  unsigned InlineWidth) {
276  // Fully-aligned, power-of-2 sizes no larger than the inline
277  // width will be inlined as lock-free operations.
278  if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 &&
279  TypeWidth <= InlineWidth)
280  return "2"; // "always lock free"
281  // We cannot be certain what operations the lib calls might be
282  // able to implement as lock-free on future processors.
283  return "1"; // "sometimes lock free"
284 }
285 
286 /// Add definitions required for a smooth interaction between
287 /// Objective-C++ automated reference counting and libstdc++ (4.2).
288 static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts,
289  MacroBuilder &Builder) {
290  Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR");
291 
292  std::string Result;
293  {
294  // Provide specializations for the __is_scalar type trait so that
295  // lifetime-qualified objects are not considered "scalar" types, which
296  // libstdc++ uses as an indicator of the presence of trivial copy, assign,
297  // default-construct, and destruct semantics (none of which hold for
298  // lifetime-qualified objects in ARC).
299  llvm::raw_string_ostream Out(Result);
300 
301  Out << "namespace std {\n"
302  << "\n"
303  << "struct __true_type;\n"
304  << "struct __false_type;\n"
305  << "\n";
306 
307  Out << "template<typename _Tp> struct __is_scalar;\n"
308  << "\n";
309 
310  if (LangOpts.ObjCAutoRefCount) {
311  Out << "template<typename _Tp>\n"
312  << "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n"
313  << " enum { __value = 0 };\n"
314  << " typedef __false_type __type;\n"
315  << "};\n"
316  << "\n";
317  }
318 
319  if (LangOpts.ObjCWeak) {
320  Out << "template<typename _Tp>\n"
321  << "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n"
322  << " enum { __value = 0 };\n"
323  << " typedef __false_type __type;\n"
324  << "};\n"
325  << "\n";
326  }
327 
328  if (LangOpts.ObjCAutoRefCount) {
329  Out << "template<typename _Tp>\n"
330  << "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))"
331  << " _Tp> {\n"
332  << " enum { __value = 0 };\n"
333  << " typedef __false_type __type;\n"
334  << "};\n"
335  << "\n";
336  }
337 
338  Out << "}\n";
339  }
340  Builder.append(Result);
341 }
342 
344  const LangOptions &LangOpts,
345  const FrontendOptions &FEOpts,
346  MacroBuilder &Builder) {
347  // C++ [cpp.predefined]p1:
348  // The following macro names shall be defined by the implementation:
349 
350  // -- __STDC__
351  // [C++] Whether __STDC__ is predefined and if so, what its value is,
352  // are implementation-defined.
353  // (Removed in C++20.)
354  if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP)
355  Builder.defineMacro("__STDC__");
356  // -- __STDC_HOSTED__
357  // The integer literal 1 if the implementation is a hosted
358  // implementation or the integer literal 0 if it is not.
359  if (LangOpts.Freestanding)
360  Builder.defineMacro("__STDC_HOSTED__", "0");
361  else
362  Builder.defineMacro("__STDC_HOSTED__");
363 
364  // -- __STDC_VERSION__
365  // [C++] Whether __STDC_VERSION__ is predefined and if so, what its
366  // value is, are implementation-defined.
367  // (Removed in C++20.)
368  if (!LangOpts.CPlusPlus) {
369  if (LangOpts.C17)
370  Builder.defineMacro("__STDC_VERSION__", "201710L");
371  else if (LangOpts.C11)
372  Builder.defineMacro("__STDC_VERSION__", "201112L");
373  else if (LangOpts.C99)
374  Builder.defineMacro("__STDC_VERSION__", "199901L");
375  else if (!LangOpts.GNUMode && LangOpts.Digraphs)
376  Builder.defineMacro("__STDC_VERSION__", "199409L");
377  } else {
378  // -- __cplusplus
379  // [C++20] The integer literal 202002L.
380  if (LangOpts.CPlusPlus20)
381  Builder.defineMacro("__cplusplus", "202002L");
382  // [C++17] The integer literal 201703L.
383  else if (LangOpts.CPlusPlus17)
384  Builder.defineMacro("__cplusplus", "201703L");
385  // [C++14] The name __cplusplus is defined to the value 201402L when
386  // compiling a C++ translation unit.
387  else if (LangOpts.CPlusPlus14)
388  Builder.defineMacro("__cplusplus", "201402L");
389  // [C++11] The name __cplusplus is defined to the value 201103L when
390  // compiling a C++ translation unit.
391  else if (LangOpts.CPlusPlus11)
392  Builder.defineMacro("__cplusplus", "201103L");
393  // [C++03] The name __cplusplus is defined to the value 199711L when
394  // compiling a C++ translation unit.
395  else
396  Builder.defineMacro("__cplusplus", "199711L");
397 
398  // -- __STDCPP_DEFAULT_NEW_ALIGNMENT__
399  // [C++17] An integer literal of type std::size_t whose value is the
400  // alignment guaranteed by a call to operator new(std::size_t)
401  //
402  // We provide this in all language modes, since it seems generally useful.
403  Builder.defineMacro("__STDCPP_DEFAULT_NEW_ALIGNMENT__",
404  Twine(TI.getNewAlign() / TI.getCharWidth()) +
406  }
407 
408  // In C11 these are environment macros. In C++11 they are only defined
409  // as part of <cuchar>. To prevent breakage when mixing C and C++
410  // code, define these macros unconditionally. We can define them
411  // unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit
412  // and 32-bit character literals.
413  Builder.defineMacro("__STDC_UTF_16__", "1");
414  Builder.defineMacro("__STDC_UTF_32__", "1");
415 
416  if (LangOpts.ObjC)
417  Builder.defineMacro("__OBJC__");
418 
419  // OpenCL v1.0/1.1 s6.9, v1.2/2.0 s6.10: Preprocessor Directives and Macros.
420  if (LangOpts.OpenCL) {
421  if (LangOpts.CPlusPlus) {
422  if (LangOpts.OpenCLCPlusPlusVersion == 100)
423  Builder.defineMacro("__OPENCL_CPP_VERSION__", "100");
424  else
425  llvm_unreachable("Unsupported C++ version for OpenCL");
426  Builder.defineMacro("__CL_CPP_VERSION_1_0__", "100");
427  } else {
428  // OpenCL v1.0 and v1.1 do not have a predefined macro to indicate the
429  // language standard with which the program is compiled. __OPENCL_VERSION__
430  // is for the OpenCL version supported by the OpenCL device, which is not
431  // necessarily the language standard with which the program is compiled.
432  // A shared OpenCL header file requires a macro to indicate the language
433  // standard. As a workaround, __OPENCL_C_VERSION__ is defined for
434  // OpenCL v1.0 and v1.1.
435  switch (LangOpts.OpenCLVersion) {
436  case 100:
437  Builder.defineMacro("__OPENCL_C_VERSION__", "100");
438  break;
439  case 110:
440  Builder.defineMacro("__OPENCL_C_VERSION__", "110");
441  break;
442  case 120:
443  Builder.defineMacro("__OPENCL_C_VERSION__", "120");
444  break;
445  case 200:
446  Builder.defineMacro("__OPENCL_C_VERSION__", "200");
447  break;
448  default:
449  llvm_unreachable("Unsupported OpenCL version");
450  }
451  }
452  Builder.defineMacro("CL_VERSION_1_0", "100");
453  Builder.defineMacro("CL_VERSION_1_1", "110");
454  Builder.defineMacro("CL_VERSION_1_2", "120");
455  Builder.defineMacro("CL_VERSION_2_0", "200");
456 
457  if (TI.isLittleEndian())
458  Builder.defineMacro("__ENDIAN_LITTLE__");
459 
460  if (LangOpts.FastRelaxedMath)
461  Builder.defineMacro("__FAST_RELAXED_MATH__");
462  }
463 
464  if (LangOpts.SYCL) {
465  // SYCL Version is set to a value when building SYCL applications
466  if (LangOpts.SYCLVersion == 2017)
467  Builder.defineMacro("CL_SYCL_LANGUAGE_VERSION", "121");
468  }
469 
470  // Not "standard" per se, but available even with the -undef flag.
471  if (LangOpts.AsmPreprocessor)
472  Builder.defineMacro("__ASSEMBLER__");
473  if (LangOpts.CUDA && !LangOpts.HIP)
474  Builder.defineMacro("__CUDA__");
475  if (LangOpts.HIP) {
476  Builder.defineMacro("__HIP__");
477  Builder.defineMacro("__HIPCC__");
478  if (LangOpts.CUDAIsDevice)
479  Builder.defineMacro("__HIP_DEVICE_COMPILE__");
480  }
481 }
482 
483 /// Initialize the predefined C++ language feature test macros defined in
484 /// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations".
486  MacroBuilder &Builder) {
487  // C++98 features.
488  if (LangOpts.RTTI)
489  Builder.defineMacro("__cpp_rtti", "199711L");
490  if (LangOpts.CXXExceptions)
491  Builder.defineMacro("__cpp_exceptions", "199711L");
492 
493  // C++11 features.
494  if (LangOpts.CPlusPlus11) {
495  Builder.defineMacro("__cpp_unicode_characters", "200704L");
496  Builder.defineMacro("__cpp_raw_strings", "200710L");
497  Builder.defineMacro("__cpp_unicode_literals", "200710L");
498  Builder.defineMacro("__cpp_user_defined_literals", "200809L");
499  Builder.defineMacro("__cpp_lambdas", "200907L");
500  Builder.defineMacro("__cpp_constexpr",
501  LangOpts.CPlusPlus20 ? "201907L" :
502  LangOpts.CPlusPlus17 ? "201603L" :
503  LangOpts.CPlusPlus14 ? "201304L" : "200704");
504  Builder.defineMacro("__cpp_constexpr_in_decltype", "201711L");
505  Builder.defineMacro("__cpp_range_based_for",
506  LangOpts.CPlusPlus17 ? "201603L" : "200907");
507  Builder.defineMacro("__cpp_static_assert",
508  LangOpts.CPlusPlus17 ? "201411L" : "200410");
509  Builder.defineMacro("__cpp_decltype", "200707L");
510  Builder.defineMacro("__cpp_attributes", "200809L");
511  Builder.defineMacro("__cpp_rvalue_references", "200610L");
512  Builder.defineMacro("__cpp_variadic_templates", "200704L");
513  Builder.defineMacro("__cpp_initializer_lists", "200806L");
514  Builder.defineMacro("__cpp_delegating_constructors", "200604L");
515  Builder.defineMacro("__cpp_nsdmi", "200809L");
516  Builder.defineMacro("__cpp_inheriting_constructors", "201511L");
517  Builder.defineMacro("__cpp_ref_qualifiers", "200710L");
518  Builder.defineMacro("__cpp_alias_templates", "200704L");
519  }
520  if (LangOpts.ThreadsafeStatics)
521  Builder.defineMacro("__cpp_threadsafe_static_init", "200806L");
522 
523  // C++14 features.
524  if (LangOpts.CPlusPlus14) {
525  Builder.defineMacro("__cpp_binary_literals", "201304L");
526  Builder.defineMacro("__cpp_digit_separators", "201309L");
527  Builder.defineMacro("__cpp_init_captures",
528  LangOpts.CPlusPlus20 ? "201803L" : "201304L");
529  Builder.defineMacro("__cpp_generic_lambdas",
530  LangOpts.CPlusPlus20 ? "201707L" : "201304L");
531  Builder.defineMacro("__cpp_decltype_auto", "201304L");
532  Builder.defineMacro("__cpp_return_type_deduction", "201304L");
533  Builder.defineMacro("__cpp_aggregate_nsdmi", "201304L");
534  Builder.defineMacro("__cpp_variable_templates", "201304L");
535  }
536  if (LangOpts.SizedDeallocation)
537  Builder.defineMacro("__cpp_sized_deallocation", "201309L");
538 
539  // C++17 features.
540  if (LangOpts.CPlusPlus17) {
541  Builder.defineMacro("__cpp_hex_float", "201603L");
542  Builder.defineMacro("__cpp_inline_variables", "201606L");
543  Builder.defineMacro("__cpp_noexcept_function_type", "201510L");
544  Builder.defineMacro("__cpp_capture_star_this", "201603L");
545  Builder.defineMacro("__cpp_if_constexpr", "201606L");
546  Builder.defineMacro("__cpp_deduction_guides", "201703L"); // (not latest)
547  Builder.defineMacro("__cpp_template_auto", "201606L"); // (old name)
548  Builder.defineMacro("__cpp_namespace_attributes", "201411L");
549  Builder.defineMacro("__cpp_enumerator_attributes", "201411L");
550  Builder.defineMacro("__cpp_nested_namespace_definitions", "201411L");
551  Builder.defineMacro("__cpp_variadic_using", "201611L");
552  Builder.defineMacro("__cpp_aggregate_bases", "201603L");
553  Builder.defineMacro("__cpp_structured_bindings", "201606L");
554  Builder.defineMacro("__cpp_nontype_template_args",
555  "201411L"); // (not latest)
556  Builder.defineMacro("__cpp_fold_expressions", "201603L");
557  Builder.defineMacro("__cpp_guaranteed_copy_elision", "201606L");
558  Builder.defineMacro("__cpp_nontype_template_parameter_auto", "201606L");
559  }
560  if (LangOpts.AlignedAllocation && !LangOpts.AlignedAllocationUnavailable)
561  Builder.defineMacro("__cpp_aligned_new", "201606L");
562  if (LangOpts.RelaxedTemplateTemplateArgs)
563  Builder.defineMacro("__cpp_template_template_args", "201611L");
564 
565  // C++20 features.
566  if (LangOpts.CPlusPlus20) {
567  //Builder.defineMacro("__cpp_aggregate_paren_init", "201902L");
568  Builder.defineMacro("__cpp_concepts", "201907L");
569  Builder.defineMacro("__cpp_conditional_explicit", "201806L");
570  //Builder.defineMacro("__cpp_consteval", "201811L");
571  Builder.defineMacro("__cpp_constexpr_dynamic_alloc", "201907L");
572  Builder.defineMacro("__cpp_constinit", "201907L");
573  //Builder.defineMacro("__cpp_coroutines", "201902L");
574  Builder.defineMacro("__cpp_designated_initializers", "201707L");
575  Builder.defineMacro("__cpp_impl_three_way_comparison", "201907L");
576  //Builder.defineMacro("__cpp_modules", "201907L");
577  //Builder.defineMacro("__cpp_using_enum", "201907L");
578  }
579  if (LangOpts.Char8)
580  Builder.defineMacro("__cpp_char8_t", "201811L");
581  Builder.defineMacro("__cpp_impl_destroying_delete", "201806L");
582 
583  // TS features.
584  if (LangOpts.Coroutines)
585  Builder.defineMacro("__cpp_coroutines", "201703L");
586 }
587 
589  const LangOptions &LangOpts,
590  const FrontendOptions &FEOpts,
591  const PreprocessorOptions &PPOpts,
592  MacroBuilder &Builder) {
593  // Compiler version introspection macros.
594  Builder.defineMacro("__llvm__"); // LLVM Backend
595  Builder.defineMacro("__clang__"); // Clang Frontend
596 #define TOSTR2(X) #X
597 #define TOSTR(X) TOSTR2(X)
598  Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR));
599  Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR));
600  Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL));
601 #undef TOSTR
602 #undef TOSTR2
603  Builder.defineMacro("__clang_version__",
604  "\"" CLANG_VERSION_STRING " "
605  + getClangFullRepositoryVersion() + "\"");
606 
607  if (LangOpts.GNUCVersion != 0) {
608  // Major, minor, patch, are given two decimal places each, so 4.2.1 becomes
609  // 40201.
610  unsigned GNUCMajor = LangOpts.GNUCVersion / 100 / 100;
611  unsigned GNUCMinor = LangOpts.GNUCVersion / 100 % 100;
612  unsigned GNUCPatch = LangOpts.GNUCVersion % 100;
613  Builder.defineMacro("__GNUC__", Twine(GNUCMajor));
614  Builder.defineMacro("__GNUC_MINOR__", Twine(GNUCMinor));
615  Builder.defineMacro("__GNUC_PATCHLEVEL__", Twine(GNUCPatch));
616  Builder.defineMacro("__GXX_ABI_VERSION", "1002");
617 
618  if (LangOpts.CPlusPlus) {
619  Builder.defineMacro("__GNUG__", Twine(GNUCMajor));
620  Builder.defineMacro("__GXX_WEAK__");
621  }
622  }
623 
624  // Define macros for the C11 / C++11 memory orderings
625  Builder.defineMacro("__ATOMIC_RELAXED", "0");
626  Builder.defineMacro("__ATOMIC_CONSUME", "1");
627  Builder.defineMacro("__ATOMIC_ACQUIRE", "2");
628  Builder.defineMacro("__ATOMIC_RELEASE", "3");
629  Builder.defineMacro("__ATOMIC_ACQ_REL", "4");
630  Builder.defineMacro("__ATOMIC_SEQ_CST", "5");
631 
632  // Define macros for the OpenCL memory scope.
633  // The values should match AtomicScopeOpenCLModel::ID enum.
634  static_assert(
635  static_cast<unsigned>(AtomicScopeOpenCLModel::WorkGroup) == 1 &&
636  static_cast<unsigned>(AtomicScopeOpenCLModel::Device) == 2 &&
637  static_cast<unsigned>(AtomicScopeOpenCLModel::AllSVMDevices) == 3 &&
638  static_cast<unsigned>(AtomicScopeOpenCLModel::SubGroup) == 4,
639  "Invalid OpenCL memory scope enum definition");
640  Builder.defineMacro("__OPENCL_MEMORY_SCOPE_WORK_ITEM", "0");
641  Builder.defineMacro("__OPENCL_MEMORY_SCOPE_WORK_GROUP", "1");
642  Builder.defineMacro("__OPENCL_MEMORY_SCOPE_DEVICE", "2");
643  Builder.defineMacro("__OPENCL_MEMORY_SCOPE_ALL_SVM_DEVICES", "3");
644  Builder.defineMacro("__OPENCL_MEMORY_SCOPE_SUB_GROUP", "4");
645 
646  // Support for #pragma redefine_extname (Sun compatibility)
647  Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1");
648 
649  // Previously this macro was set to a string aiming to achieve compatibility
650  // with GCC 4.2.1. Now, just return the full Clang version
651  Builder.defineMacro("__VERSION__", "\"" +
652  Twine(getClangFullCPPVersion()) + "\"");
653 
654  // Initialize language-specific preprocessor defines.
655 
656  // Standard conforming mode?
657  if (!LangOpts.GNUMode && !LangOpts.MSVCCompat)
658  Builder.defineMacro("__STRICT_ANSI__");
659 
660  if (LangOpts.GNUCVersion && LangOpts.CPlusPlus11)
661  Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
662 
663  if (LangOpts.ObjC) {
664  if (LangOpts.ObjCRuntime.isNonFragile()) {
665  Builder.defineMacro("__OBJC2__");
666 
667  if (LangOpts.ObjCExceptions)
668  Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
669  }
670 
671  if (LangOpts.getGC() != LangOptions::NonGC)
672  Builder.defineMacro("__OBJC_GC__");
673 
674  if (LangOpts.ObjCRuntime.isNeXTFamily())
675  Builder.defineMacro("__NEXT_RUNTIME__");
676 
677  if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::GNUstep) {
678  auto version = LangOpts.ObjCRuntime.getVersion();
679  std::string versionString = "1";
680  // Don't rely on the tuple argument, because we can be asked to target
681  // later ABIs than we actually support, so clamp these values to those
682  // currently supported
683  if (version >= VersionTuple(2, 0))
684  Builder.defineMacro("__OBJC_GNUSTEP_RUNTIME_ABI__", "20");
685  else
686  Builder.defineMacro("__OBJC_GNUSTEP_RUNTIME_ABI__",
687  "1" + Twine(std::min(8U, version.getMinor().getValueOr(0))));
688  }
689 
690  if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) {
691  VersionTuple tuple = LangOpts.ObjCRuntime.getVersion();
692 
693  unsigned minor = 0;
694  if (tuple.getMinor().hasValue())
695  minor = tuple.getMinor().getValue();
696 
697  unsigned subminor = 0;
698  if (tuple.getSubminor().hasValue())
699  subminor = tuple.getSubminor().getValue();
700 
701  Builder.defineMacro("__OBJFW_RUNTIME_ABI__",
702  Twine(tuple.getMajor() * 10000 + minor * 100 +
703  subminor));
704  }
705 
706  Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))");
707  Builder.defineMacro("IBOutletCollection(ClassName)",
708  "__attribute__((iboutletcollection(ClassName)))");
709  Builder.defineMacro("IBAction", "void)__attribute__((ibaction)");
710  Builder.defineMacro("IBInspectable", "");
711  Builder.defineMacro("IB_DESIGNABLE", "");
712  }
713 
714  // Define a macro that describes the Objective-C boolean type even for C
715  // and C++ since BOOL can be used from non Objective-C code.
716  Builder.defineMacro("__OBJC_BOOL_IS_BOOL",
717  Twine(TI.useSignedCharForObjCBool() ? "0" : "1"));
718 
719  if (LangOpts.CPlusPlus)
720  InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder);
721 
722  // darwin_constant_cfstrings controls this. This is also dependent
723  // on other things like the runtime I believe. This is set even for C code.
724  if (!LangOpts.NoConstantCFStrings)
725  Builder.defineMacro("__CONSTANT_CFSTRINGS__");
726 
727  if (LangOpts.ObjC)
728  Builder.defineMacro("OBJC_NEW_PROPERTIES");
729 
730  if (LangOpts.PascalStrings)
731  Builder.defineMacro("__PASCAL_STRINGS__");
732 
733  if (LangOpts.Blocks) {
734  Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
735  Builder.defineMacro("__BLOCKS__");
736  }
737 
738  if (!LangOpts.MSVCCompat && LangOpts.Exceptions)
739  Builder.defineMacro("__EXCEPTIONS");
740  if (LangOpts.GNUCVersion && LangOpts.RTTI)
741  Builder.defineMacro("__GXX_RTTI");
742 
743  if (LangOpts.SjLjExceptions)
744  Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
745  else if (LangOpts.SEHExceptions)
746  Builder.defineMacro("__SEH__");
747  else if (LangOpts.DWARFExceptions &&
748  (TI.getTriple().isThumb() || TI.getTriple().isARM()))
749  Builder.defineMacro("__ARM_DWARF_EH__");
750 
751  if (LangOpts.Deprecated)
752  Builder.defineMacro("__DEPRECATED");
753 
754  if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus)
755  Builder.defineMacro("__private_extern__", "extern");
756 
757  if (LangOpts.MicrosoftExt) {
758  if (LangOpts.WChar) {
759  // wchar_t supported as a keyword.
760  Builder.defineMacro("_WCHAR_T_DEFINED");
761  Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
762  }
763  }
764 
765  if (LangOpts.Optimize)
766  Builder.defineMacro("__OPTIMIZE__");
767  if (LangOpts.OptimizeSize)
768  Builder.defineMacro("__OPTIMIZE_SIZE__");
769 
770  if (LangOpts.FastMath)
771  Builder.defineMacro("__FAST_MATH__");
772 
773  // Initialize target-specific preprocessor defines.
774 
775  // __BYTE_ORDER__ was added in GCC 4.6. It's analogous
776  // to the macro __BYTE_ORDER (no trailing underscores)
777  // from glibc's <endian.h> header.
778  // We don't support the PDP-11 as a target, but include
779  // the define so it can still be compared against.
780  Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234");
781  Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321");
782  Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412");
783  if (TI.isBigEndian()) {
784  Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__");
785  Builder.defineMacro("__BIG_ENDIAN__");
786  } else {
787  Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
788  Builder.defineMacro("__LITTLE_ENDIAN__");
789  }
790 
791  if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64
792  && TI.getIntWidth() == 32) {
793  Builder.defineMacro("_LP64");
794  Builder.defineMacro("__LP64__");
795  }
796 
797  if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32
798  && TI.getIntWidth() == 32) {
799  Builder.defineMacro("_ILP32");
800  Builder.defineMacro("__ILP32__");
801  }
802 
803  // Define type sizing macros based on the target properties.
804  assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
805  Builder.defineMacro("__CHAR_BIT__", Twine(TI.getCharWidth()));
806 
807  DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder);
808  DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
809  DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder);
810  DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder);
811  DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder);
812  DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder);
813  DefineTypeSize("__WINT_MAX__", TI.getWIntType(), TI, Builder);
814  DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder);
815  DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder);
816 
817  DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder);
818  DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder);
819  DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder);
820  DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder);
821 
822  DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder);
823  DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder);
824  DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder);
825  DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder);
826  DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder);
827  DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder);
828  DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder);
829  DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder);
830  DefineTypeSizeof("__SIZEOF_PTRDIFF_T__",
831  TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder);
832  DefineTypeSizeof("__SIZEOF_SIZE_T__",
833  TI.getTypeWidth(TI.getSizeType()), TI, Builder);
834  DefineTypeSizeof("__SIZEOF_WCHAR_T__",
835  TI.getTypeWidth(TI.getWCharType()), TI, Builder);
836  DefineTypeSizeof("__SIZEOF_WINT_T__",
837  TI.getTypeWidth(TI.getWIntType()), TI, Builder);
838  if (TI.hasInt128Type())
839  DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
840 
841  DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
842  DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder);
843  Builder.defineMacro("__INTMAX_C_SUFFIX__",
845  DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
846  DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder);
847  Builder.defineMacro("__UINTMAX_C_SUFFIX__",
849  DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
850  DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
851  DefineFmt("__PTRDIFF", TI.getPtrDiffType(0), TI, Builder);
852  DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
853  DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
854  DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder);
855  DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
856  DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
857  DefineFmt("__SIZE", TI.getSizeType(), TI, Builder);
858  DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder);
859  DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
860  DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder);
861  DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
862  DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder);
863  DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder);
864  DefineTypeSize("__SIG_ATOMIC_MAX__", TI.getSigAtomicType(), TI, Builder);
865  DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
866  DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
867 
868  DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder);
869  DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder);
870  DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder);
871  DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder);
872 
873  if (TI.hasFloat16Type())
874  DefineFloatMacros(Builder, "FLT16", &TI.getHalfFormat(), "F16");
875  DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
876  DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
877  DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
878 
879  // Define a __POINTER_WIDTH__ macro for stdint.h.
880  Builder.defineMacro("__POINTER_WIDTH__",
881  Twine((int)TI.getPointerWidth(0)));
882 
883  // Define __BIGGEST_ALIGNMENT__ to be compatible with gcc.
884  Builder.defineMacro("__BIGGEST_ALIGNMENT__",
885  Twine(TI.getSuitableAlign() / TI.getCharWidth()) );
886 
887  if (!LangOpts.CharIsSigned)
888  Builder.defineMacro("__CHAR_UNSIGNED__");
889 
891  Builder.defineMacro("__WCHAR_UNSIGNED__");
892 
894  Builder.defineMacro("__WINT_UNSIGNED__");
895 
896  // Define exact-width integer types for stdint.h
898 
899  if (TI.getShortWidth() > TI.getCharWidth())
901 
902  if (TI.getIntWidth() > TI.getShortWidth())
904 
905  if (TI.getLongWidth() > TI.getIntWidth())
907 
908  if (TI.getLongLongWidth() > TI.getLongWidth())
910 
914 
915  if (TI.getShortWidth() > TI.getCharWidth()) {
919  }
920 
921  if (TI.getIntWidth() > TI.getShortWidth()) {
925  }
926 
927  if (TI.getLongWidth() > TI.getIntWidth()) {
931  }
932 
933  if (TI.getLongLongWidth() > TI.getLongWidth()) {
937  }
938 
939  DefineLeastWidthIntType(8, true, TI, Builder);
940  DefineLeastWidthIntType(8, false, TI, Builder);
941  DefineLeastWidthIntType(16, true, TI, Builder);
942  DefineLeastWidthIntType(16, false, TI, Builder);
943  DefineLeastWidthIntType(32, true, TI, Builder);
944  DefineLeastWidthIntType(32, false, TI, Builder);
945  DefineLeastWidthIntType(64, true, TI, Builder);
946  DefineLeastWidthIntType(64, false, TI, Builder);
947 
948  DefineFastIntType(8, true, TI, Builder);
949  DefineFastIntType(8, false, TI, Builder);
950  DefineFastIntType(16, true, TI, Builder);
951  DefineFastIntType(16, false, TI, Builder);
952  DefineFastIntType(32, true, TI, Builder);
953  DefineFastIntType(32, false, TI, Builder);
954  DefineFastIntType(64, true, TI, Builder);
955  DefineFastIntType(64, false, TI, Builder);
956 
957  char UserLabelPrefix[2] = {TI.getDataLayout().getGlobalPrefix(), 0};
958  Builder.defineMacro("__USER_LABEL_PREFIX__", UserLabelPrefix);
959 
960  if (LangOpts.FastMath || LangOpts.FiniteMathOnly)
961  Builder.defineMacro("__FINITE_MATH_ONLY__", "1");
962  else
963  Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
964 
965  if (LangOpts.GNUCVersion) {
966  if (LangOpts.GNUInline || LangOpts.CPlusPlus)
967  Builder.defineMacro("__GNUC_GNU_INLINE__");
968  else
969  Builder.defineMacro("__GNUC_STDC_INLINE__");
970 
971  // The value written by __atomic_test_and_set.
972  // FIXME: This is target-dependent.
973  Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
974  }
975 
976  auto addLockFreeMacros = [&](const llvm::Twine &Prefix) {
977  // Used by libc++ and libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
978  unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
979 #define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
980  Builder.defineMacro(Prefix + #TYPE "_LOCK_FREE", \
981  getLockFreeValue(TI.get##Type##Width(), \
982  TI.get##Type##Align(), \
983  InlineWidthBits));
985  DEFINE_LOCK_FREE_MACRO(CHAR, Char);
986  if (LangOpts.Char8)
987  DEFINE_LOCK_FREE_MACRO(CHAR8_T, Char); // Treat char8_t like char.
988  DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16);
989  DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32);
990  DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar);
991  DEFINE_LOCK_FREE_MACRO(SHORT, Short);
992  DEFINE_LOCK_FREE_MACRO(INT, Int);
993  DEFINE_LOCK_FREE_MACRO(LONG, Long);
994  DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
995  Builder.defineMacro(Prefix + "POINTER_LOCK_FREE",
997  TI.getPointerAlign(0),
998  InlineWidthBits));
999 #undef DEFINE_LOCK_FREE_MACRO
1000  };
1001  addLockFreeMacros("__CLANG_ATOMIC_");
1002  if (LangOpts.GNUCVersion)
1003  addLockFreeMacros("__GCC_ATOMIC_");
1004 
1005  if (LangOpts.NoInlineDefine)
1006  Builder.defineMacro("__NO_INLINE__");
1007 
1008  if (unsigned PICLevel = LangOpts.PICLevel) {
1009  Builder.defineMacro("__PIC__", Twine(PICLevel));
1010  Builder.defineMacro("__pic__", Twine(PICLevel));
1011  if (LangOpts.PIE) {
1012  Builder.defineMacro("__PIE__", Twine(PICLevel));
1013  Builder.defineMacro("__pie__", Twine(PICLevel));
1014  }
1015  }
1016 
1017  // Macros to control C99 numerics and <float.h>
1018  Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod()));
1019  Builder.defineMacro("__FLT_RADIX__", "2");
1020  Builder.defineMacro("__DECIMAL_DIG__", "__LDBL_DECIMAL_DIG__");
1021 
1022  if (LangOpts.getStackProtector() == LangOptions::SSPOn)
1023  Builder.defineMacro("__SSP__");
1024  else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
1025  Builder.defineMacro("__SSP_STRONG__", "2");
1026  else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
1027  Builder.defineMacro("__SSP_ALL__", "3");
1028 
1029  if (PPOpts.SetUpStaticAnalyzer)
1030  Builder.defineMacro("__clang_analyzer__");
1031 
1032  if (LangOpts.FastRelaxedMath)
1033  Builder.defineMacro("__FAST_RELAXED_MATH__");
1034 
1035  if (FEOpts.ProgramAction == frontend::RewriteObjC ||
1036  LangOpts.getGC() != LangOptions::NonGC) {
1037  Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
1038  Builder.defineMacro("__strong", "__attribute__((objc_gc(strong)))");
1039  Builder.defineMacro("__autoreleasing", "");
1040  Builder.defineMacro("__unsafe_unretained", "");
1041  } else if (LangOpts.ObjC) {
1042  Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))");
1043  Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))");
1044  Builder.defineMacro("__autoreleasing",
1045  "__attribute__((objc_ownership(autoreleasing)))");
1046  Builder.defineMacro("__unsafe_unretained",
1047  "__attribute__((objc_ownership(none)))");
1048  }
1049 
1050  // On Darwin, there are __double_underscored variants of the type
1051  // nullability qualifiers.
1052  if (TI.getTriple().isOSDarwin()) {
1053  Builder.defineMacro("__nonnull", "_Nonnull");
1054  Builder.defineMacro("__null_unspecified", "_Null_unspecified");
1055  Builder.defineMacro("__nullable", "_Nullable");
1056  }
1057 
1058  // Add a macro to differentiate between regular iOS/tvOS/watchOS targets and
1059  // the corresponding simulator targets.
1060  if (TI.getTriple().isOSDarwin() && TI.getTriple().isSimulatorEnvironment())
1061  Builder.defineMacro("__APPLE_EMBEDDED_SIMULATOR__", "1");
1062 
1063  // OpenMP definition
1064  // OpenMP 2.2:
1065  // In implementations that support a preprocessor, the _OPENMP
1066  // macro name is defined to have the decimal value yyyymm where
1067  // yyyy and mm are the year and the month designations of the
1068  // version of the OpenMP API that the implementation support.
1069  if (!LangOpts.OpenMPSimd) {
1070  switch (LangOpts.OpenMP) {
1071  case 0:
1072  break;
1073  case 31:
1074  Builder.defineMacro("_OPENMP", "201107");
1075  break;
1076  case 40:
1077  Builder.defineMacro("_OPENMP", "201307");
1078  break;
1079  case 45:
1080  Builder.defineMacro("_OPENMP", "201511");
1081  break;
1082  default:
1083  // Default version is OpenMP 5.0
1084  Builder.defineMacro("_OPENMP", "201811");
1085  break;
1086  }
1087  }
1088 
1089  // CUDA device path compilaton
1090  if (LangOpts.CUDAIsDevice && !LangOpts.HIP) {
1091  // The CUDA_ARCH value is set for the GPU target specified in the NVPTX
1092  // backend's target defines.
1093  Builder.defineMacro("__CUDA_ARCH__");
1094  }
1095 
1096  // We need to communicate this to our CUDA header wrapper, which in turn
1097  // informs the proper CUDA headers of this choice.
1098  if (LangOpts.CUDADeviceApproxTranscendentals || LangOpts.FastMath) {
1099  Builder.defineMacro("__CLANG_CUDA_APPROX_TRANSCENDENTALS__");
1100  }
1101 
1102  // Define a macro indicating that the source file is being compiled with a
1103  // SYCL device compiler which doesn't produce host binary.
1104  if (LangOpts.SYCLIsDevice) {
1105  Builder.defineMacro("__SYCL_DEVICE_ONLY__", "1");
1106  }
1107 
1108  // OpenCL definitions.
1109  if (LangOpts.OpenCL) {
1110 #define OPENCLEXT(Ext) \
1111  if (TI.getSupportedOpenCLOpts().isSupported(#Ext, LangOpts)) \
1112  Builder.defineMacro(#Ext);
1113 #include "clang/Basic/OpenCLExtensions.def"
1114 
1115  if (TI.getTriple().isSPIR())
1116  Builder.defineMacro("__IMAGE_SUPPORT__");
1117  }
1118 
1119  if (TI.hasInt128Type() && LangOpts.CPlusPlus && LangOpts.GNUMode) {
1120  // For each extended integer type, g++ defines a macro mapping the
1121  // index of the type (0 in this case) in some list of extended types
1122  // to the type.
1123  Builder.defineMacro("__GLIBCXX_TYPE_INT_N_0", "__int128");
1124  Builder.defineMacro("__GLIBCXX_BITSIZE_INT_N_0", "128");
1125  }
1126 
1127  // Get other target #defines.
1128  TI.getTargetDefines(LangOpts, Builder);
1129 }
1130 
1131 /// InitializePreprocessor - Initialize the preprocessor getting it and the
1132 /// environment ready to process a single file. This returns true on error.
1133 ///
1135  Preprocessor &PP, const PreprocessorOptions &InitOpts,
1136  const PCHContainerReader &PCHContainerRdr,
1137  const FrontendOptions &FEOpts) {
1138  const LangOptions &LangOpts = PP.getLangOpts();
1139  std::string PredefineBuffer;
1140  PredefineBuffer.reserve(4080);
1141  llvm::raw_string_ostream Predefines(PredefineBuffer);
1142  MacroBuilder Builder(Predefines);
1143 
1144  // Emit line markers for various builtin sections of the file. We don't do
1145  // this in asm preprocessor mode, because "# 4" is not a line marker directive
1146  // in this mode.
1147  if (!PP.getLangOpts().AsmPreprocessor)
1148  Builder.append("# 1 \"<built-in>\" 3");
1149 
1150  // Install things like __POWERPC__, __GNUC__, etc into the macro table.
1151  if (InitOpts.UsePredefines) {
1152  // FIXME: This will create multiple definitions for most of the predefined
1153  // macros. This is not the right way to handle this.
1154  if ((LangOpts.CUDA || LangOpts.OpenMPIsDevice || LangOpts.SYCLIsDevice) &&
1155  PP.getAuxTargetInfo())
1156  InitializePredefinedMacros(*PP.getAuxTargetInfo(), LangOpts, FEOpts,
1157  PP.getPreprocessorOpts(), Builder);
1158 
1159  InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts,
1160  PP.getPreprocessorOpts(), Builder);
1161 
1162  // Install definitions to make Objective-C++ ARC work well with various
1163  // C++ Standard Library implementations.
1164  if (LangOpts.ObjC && LangOpts.CPlusPlus &&
1165  (LangOpts.ObjCAutoRefCount || LangOpts.ObjCWeak)) {
1166  switch (InitOpts.ObjCXXARCStandardLibrary) {
1167  case ARCXX_nolib:
1168  case ARCXX_libcxx:
1169  break;
1170 
1171  case ARCXX_libstdcxx:
1172  AddObjCXXARCLibstdcxxDefines(LangOpts, Builder);
1173  break;
1174  }
1175  }
1176  }
1177 
1178  // Even with predefines off, some macros are still predefined.
1179  // These should all be defined in the preprocessor according to the
1180  // current language configuration.
1182  FEOpts, Builder);
1183 
1184  // Add on the predefines from the driver. Wrap in a #line directive to report
1185  // that they come from the command line.
1186  if (!PP.getLangOpts().AsmPreprocessor)
1187  Builder.append("# 1 \"<command line>\" 1");
1188 
1189  // Process #define's and #undef's in the order they are given.
1190  for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
1191  if (InitOpts.Macros[i].second) // isUndef
1192  Builder.undefineMacro(InitOpts.Macros[i].first);
1193  else
1194  DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
1195  PP.getDiagnostics());
1196  }
1197 
1198  // Exit the command line and go back to <built-in> (2 is LC_LEAVE).
1199  if (!PP.getLangOpts().AsmPreprocessor)
1200  Builder.append("# 1 \"<built-in>\" 2");
1201 
1202  // If -imacros are specified, include them now. These are processed before
1203  // any -include directives.
1204  for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
1205  AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]);
1206 
1207  // Process -include-pch/-include-pth directives.
1208  if (!InitOpts.ImplicitPCHInclude.empty())
1209  AddImplicitIncludePCH(Builder, PP, PCHContainerRdr,
1210  InitOpts.ImplicitPCHInclude);
1211 
1212  // Process -include directives.
1213  for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
1214  const std::string &Path = InitOpts.Includes[i];
1215  AddImplicitInclude(Builder, Path);
1216  }
1217 
1218  // Instruct the preprocessor to skip the preamble.
1220  InitOpts.PrecompiledPreambleBytes.second);
1221 
1222  // Copy PredefinedBuffer into the Preprocessor.
1223  PP.setPredefines(Predefines.str());
1224 }
unsigned getTypeWidth(IntType T) const
Return the width (in bits) of the specified integer type enum.
Definition: TargetInfo.cpp:223
IntType getInt64Type() const
Definition: TargetInfo.h:334
unsigned getFloatWidth() const
getFloatWidth/Align/Format - Return the size/align/format of &#39;float&#39;.
Definition: TargetInfo.h:624
std::vector< std::pair< std::string, bool > > Macros
Defines the clang::MacroBuilder utility class.
unsigned getLongWidth() const
getLongWidth/Align - Return the size of &#39;signed long&#39; and &#39;unsigned long&#39; for this target...
Definition: TargetInfo.h:436
Defines the clang::FileManager interface and associated types.
unsigned getSuitableAlign() const
Return the alignment that is suitable for storing any object with a fundamental alignment requirement...
Definition: TargetInfo.h:582
bool isBigEndian() const
Definition: TargetInfo.h:1343
const llvm::Triple & getTriple() const
Returns the target triple of the primary target.
Definition: TargetInfo.h:1056
Defines the SourceManager interface.
virtual IntType getLeastIntTypeByWidth(unsigned BitWidth, bool IsSigned) const
Return the smallest integer type with at least the specified width.
Definition: TargetInfo.cpp:254
FileManager & getFileManager() const
Definition: Preprocessor.h:918
static T PickFP(const llvm::fltSemantics *Sem, T IEEEHalfVal, T IEEESingleVal, T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal, T IEEEQuadVal)
PickFP - This is used to pick a value based on the FP semantics of the specified FP model...
static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty, const TargetInfo &TI, MacroBuilder &Builder)
std::vector< std::string > Includes
static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File)
StringRef getOriginalSourceFile()
Retrieve the name of the original source file name for the primary module file.
Definition: ASTReader.h:1681
DiagnosticBuilder Report(SourceLocation Loc, unsigned DiagID)
Issue the message to the client.
Definition: Diagnostic.h:1330
PreprocessorOptions - This class is used for passing the various options used in preprocessor initial...
unsigned getCharWidth() const
Definition: TargetInfo.h:418
const llvm::fltSemantics & getHalfFormat() const
Definition: TargetInfo.h:621
static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth, const TargetInfo &TI, MacroBuilder &Builder)
void setPredefines(const char *P)
Set the predefines for this Preprocessor.
static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP, const PCHContainerReader &PCHContainerRdr, StringRef ImplicitIncludePCH)
Add an implicit #include using the original file used to generate a PCH file.
uint64_t getPointerWidth(unsigned AddrSpace) const
Return the width of pointers on this target, for the specified address space.
Definition: TargetInfo.h:396
#define TOSTR(X)
const char * getTypeConstantSuffix(IntType T) const
Return the constant suffix for the specified integer type enum.
Definition: TargetInfo.cpp:180
static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts, MacroBuilder &Builder)
Add definitions required for a smooth interaction between Objective-C++ automated reference counting ...
IntType getChar32Type() const
Definition: TargetInfo.h:333
unsigned getNewAlign() const
Return the largest alignment for which a suitably-sized allocation with &#39;::operator new(size_t)&#39; is g...
Definition: TargetInfo.h:599
const TargetInfo & getTargetInfo() const
Definition: Preprocessor.h:916
void undefineMacro(const Twine &Name)
Append a #undef line for Name.
Definition: MacroBuilder.h:35
IntType getSizeType() const
Definition: TargetInfo.h:301
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:54
const LangOptions & getLangOpts() const
Definition: Preprocessor.h:915
static bool isTypeSigned(IntType T)
Returns true if the type is signed; false otherwise.
Definition: TargetInfo.cpp:317
bool isNonFragile() const
Does this runtime follow the set of implied behaviors for a "non-fragile" ABI?
Definition: ObjCRuntime.h:81
bool isNeXTFamily() const
Is this runtime basically of the NeXT family of runtimes?
Definition: ObjCRuntime.h:134
LLVM_READONLY bool isWhitespace(unsigned char c)
Return true if this character is horizontal or vertical ASCII whitespace: &#39; &#39;, &#39;\t&#39;, &#39;\f&#39;, &#39;\v&#39;, &#39;\n&#39;, &#39;\r&#39;.
Definition: CharInfo.h:87
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:153
void append(const Twine &Str)
Directly append Str and a newline to the underlying buffer.
Definition: MacroBuilder.h:40
unsigned getShortWidth() const
Return the size of &#39;signed short&#39; and &#39;unsigned short&#39; for this target, in bits.
Definition: TargetInfo.h:423
static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty, MacroBuilder &Builder)
const TargetInfo * getAuxTargetInfo() const
Definition: Preprocessor.h:917
static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix, const llvm::fltSemantics *Sem, StringRef Ext)
static void AddImplicitInclude(MacroBuilder &Builder, StringRef File)
AddImplicitInclude - Add an implicit #include of the specified file to the predefines buffer...
static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty, const TargetInfo &TI, MacroBuilder &Builder)
This abstract interface provides operations for unwrapping containers for serialized ASTs (precompile...
bool isLittleEndian() const
Definition: TargetInfo.h:1344
const llvm::fltSemantics & getDoubleFormat() const
Definition: TargetInfo.h:636
static void DefineExactWidthIntType(TargetInfo::IntType Ty, const TargetInfo &TI, MacroBuilder &Builder)
const llvm::fltSemantics & getLongDoubleFormat() const
Definition: TargetInfo.h:642
Exposes information about the current target.
Definition: TargetInfo.h:179
static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned, const TargetInfo &TI, MacroBuilder &Builder)
__DEVICE__ int min(int __a, int __b)
SourceLocation End
IntType getUIntPtrType() const
Definition: TargetInfo.h:327
unsigned getIntWidth() const
getIntWidth/Align - Return the size of &#39;signed int&#39; and &#39;unsigned int&#39; for this target, in bits.
Definition: TargetInfo.h:431
static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth, StringRef ValSuffix, bool isSigned, MacroBuilder &Builder)
DefineTypeSize - Emit a macro to the predefines buffer that declares a macro named MacroName with the...
Defines version macros and version-related utility functions for Clang.
Defines the clang::Preprocessor interface.
IntType getChar16Type() const
Definition: TargetInfo.h:332
clang::ObjCRuntime ObjCRuntime
Definition: LangOptions.h:254
&#39;gnustep&#39; is the modern non-fragile GNUstep runtime.
Definition: ObjCRuntime.h:55
IntType getUIntMaxType() const
Definition: TargetInfo.h:317
unsigned getDoubleWidth() const
getDoubleWidth/Align/Format - Return the size/align/format of &#39;double&#39;.
Definition: TargetInfo.h:634
static void InitializePredefinedMacros(const TargetInfo &TI, const LangOptions &LangOpts, const FrontendOptions &FEOpts, const PreprocessorOptions &PPOpts, MacroBuilder &Builder)
static const char * getTypeName(IntType T)
Return the user string for the specified integer type enum.
Definition: TargetInfo.cpp:162
static const char * getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign, unsigned InlineWidth)
Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with the specified properties...
static bool MacroBodyEndsInBackslash(StringRef MacroBody)
IntType getPtrDiffType(unsigned AddrSpace) const
Definition: TargetInfo.h:320
IntType getSigAtomicType() const
Definition: TargetInfo.h:338
static void DefineFastIntType(unsigned TypeWidth, bool IsSigned, const TargetInfo &TI, MacroBuilder &Builder)
static void InitializeStandardPredefinedMacros(const TargetInfo &TI, const LangOptions &LangOpts, const FrontendOptions &FEOpts, MacroBuilder &Builder)
unsigned getMaxAtomicInlineWidth() const
Return the maximum width lock-free atomic operation which can be inlined given the supported features...
Definition: TargetInfo.h:678
static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro, DiagnosticsEngine &Diags)
static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts, MacroBuilder &Builder)
Initialize the predefined C++ language feature test macros defined in ISO/IEC JTC1/SC22/WG21 (C++) SD...
IntType getWIntType() const
Definition: TargetInfo.h:331
std::string ImplicitPCHInclude
The implicit PCH included at the start of the translation unit, or empty.
&#39;objfw&#39; is the Objective-C runtime included in ObjFW
Definition: ObjCRuntime.h:58
unsigned getLongLongWidth() const
getLongLongWidth/Align - Return the size of &#39;signed long long&#39; and &#39;unsigned long long&#39; for this targ...
Definition: TargetInfo.h:441
Kind getKind() const
Definition: ObjCRuntime.h:76
IntType getIntMaxType() const
Definition: TargetInfo.h:316
std::string getClangFullRepositoryVersion()
Retrieves the full repository version that is an amalgamation of the information in getClangRepositor...
Definition: Version.cpp:62
llvm::APInt APInt
Definition: Integral.h:27
const llvm::DataLayout & getDataLayout() const
Definition: TargetInfo.h:1060
virtual unsigned getFloatEvalMethod() const
Return the value for the C99 FLT_EVAL_METHOD macro.
Definition: TargetInfo.h:666
IntType getUInt64Type() const
Definition: TargetInfo.h:335
const VersionTuple & getVersion() const
Definition: ObjCRuntime.h:77
unsigned getLongDoubleWidth() const
getLongDoubleWidth/Align/Format - Return the size/align/format of &#39;long double&#39;.
Definition: TargetInfo.h:640
std::vector< std::string > MacroIncludes
IntType
===-— Target Data Type Query Methods ----------------------------—===//
Definition: TargetInfo.h:110
Dataflow Directional Tag Classes.
static const char * getTypeFormatModifier(IntType T)
Return the printf format modifier for the specified integer type enum.
Definition: TargetInfo.cpp:205
bool UsePredefines
Initialize the preprocessor with the compiler and target specific predefines.
frontend::ActionKind ProgramAction
The frontend action to perform.
virtual bool hasFloat16Type() const
Determine whether the _Float16 type is supported on this target.
Definition: TargetInfo.h:575
FrontendOptions - Options for controlling the behavior of the frontend.
#define DEFINE_LOCK_FREE_MACRO(TYPE, Type)
bool useSignedCharForObjCBool() const
Check if the Objective-C built-in boolean type should be signed char.
Definition: TargetInfo.h:742
virtual void getTargetDefines(const LangOptions &Opts, MacroBuilder &Builder) const =0
===-— Other target property query methods --------------------——===//
ObjCXXARCStandardLibraryKind ObjCXXARCStandardLibrary
The Objective-C++ ARC standard library that we should support, by providing appropriate definitions t...
std::string getClangFullCPPVersion()
Retrieves a string representing the complete clang version suitable for use in the CPP VERSION macro...
Definition: Version.cpp:106
virtual bool hasInt128Type() const
Determine whether the __int128 type is supported on this target.
Definition: TargetInfo.h:558
PreprocessorOptions & getPreprocessorOpts() const
Retrieve the preprocessor options used to initialize this preprocessor.
Definition: Preprocessor.h:910
Provides definitions for the atomic synchronization scopes.
DiagnosticsEngine & getDiagnostics() const
Definition: Preprocessor.h:912
const llvm::fltSemantics & getFloatFormat() const
Definition: TargetInfo.h:626
void InitializePreprocessor(Preprocessor &PP, const PreprocessorOptions &PPOpts, const PCHContainerReader &PCHContainerRdr, const FrontendOptions &FEOpts)
InitializePreprocessor - Initialize the preprocessor getting it and the environment ready to process ...
IntType getWCharType() const
Definition: TargetInfo.h:330
bool SetUpStaticAnalyzer
Set up preprocessor for RunAnalysis action.
uint64_t getPointerAlign(unsigned AddrSpace) const
Definition: TargetInfo.h:399
std::pair< unsigned, bool > PrecompiledPreambleBytes
If non-zero, the implicit PCH include is actually a precompiled preamble that covers this number of b...
Defines the clang::TargetInfo interface.
IntType getIntPtrType() const
Definition: TargetInfo.h:326
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
void setSkipMainFilePreamble(unsigned Bytes, bool StartOfLine)
Instruct the preprocessor to skip part of the main source file.
static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty, const TargetInfo &TI, MacroBuilder &Builder)
Engages in a tight little dance with the lexer to efficiently preprocess tokens.
Definition: Preprocessor.h:128