1//===--- InitPreprocessor.cpp - PP initialization code. ---------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the clang::InitializePreprocessor function.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/Frontend/Utils.h"
15#include "clang/Basic/FileManager.h"
16#include "clang/Basic/MacroBuilder.h"
17#include "clang/Basic/SourceManager.h"
18#include "clang/Basic/TargetInfo.h"
19#include "clang/Basic/Version.h"
20#include "clang/Frontend/FrontendDiagnostic.h"
21#include "clang/Frontend/FrontendOptions.h"
22#include "clang/Lex/HeaderSearch.h"
23#include "clang/Lex/Preprocessor.h"
24#include "clang/Lex/PreprocessorOptions.h"
25#include "clang/Serialization/ASTReader.h"
26#include "llvm/ADT/APFloat.h"
27#include "llvm/Support/FileSystem.h"
28#include "llvm/Support/MemoryBuffer.h"
29#include "llvm/Support/Path.h"
30using namespace clang;
31
32static bool MacroBodyEndsInBackslash(StringRef MacroBody) {
33 while (!MacroBody.empty() && isWhitespace(MacroBody.back()))
34 MacroBody = MacroBody.drop_back();
35 return !MacroBody.empty() && MacroBody.back() == '\\';
36}
37
38// Append a #define line to Buf for Macro. Macro should be of the form XXX,
39// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
40// "#define XXX Y z W". To get a #define with no value, use "XXX=".
41static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro,
42 DiagnosticsEngine &Diags) {
43 std::pair<StringRef, StringRef> MacroPair = Macro.split('=');
44 StringRef MacroName = MacroPair.first;
45 StringRef MacroBody = MacroPair.second;
46 if (MacroName.size() != Macro.size()) {
47 // Per GCC -D semantics, the macro ends at \n if it exists.
48 StringRef::size_type End = MacroBody.find_first_of("\n\r");
49 if (End != StringRef::npos)
50 Diags.Report(diag::warn_fe_macro_contains_embedded_newline)
51 << MacroName;
52 MacroBody = MacroBody.substr(0, End);
53 // We handle macro bodies which end in a backslash by appending an extra
54 // backslash+newline. This makes sure we don't accidentally treat the
55 // backslash as a line continuation marker.
56 if (MacroBodyEndsInBackslash(MacroBody))
57 Builder.defineMacro(MacroName, Twine(MacroBody) + "\\\n");
58 else
59 Builder.defineMacro(MacroName, MacroBody);
60 } else {
61 // Push "macroname 1".
62 Builder.defineMacro(Macro);
63 }
64}
65
66/// AddImplicitInclude - Add an implicit \#include of the specified file to the
67/// predefines buffer.
68/// As these includes are generated by -include arguments the header search
69/// logic is going to search relatively to the current working directory.
70static void AddImplicitInclude(MacroBuilder &Builder, StringRef File) {
71 Builder.append(Twine("#include \"") + File + "\"");
72}
73
74static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) {
75 Builder.append(Twine("#__include_macros \"") + File + "\"");
76 // Marker token to stop the __include_macros fetch loop.
77 Builder.append("##"); // ##?
78}
79
80/// AddImplicitIncludePTH - Add an implicit \#include using the original file
81/// used to generate a PTH cache.
82static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP,
83 StringRef ImplicitIncludePTH) {
84 PTHManager *P = PP.getPTHManager();
85 // Null check 'P' in the corner case where it couldn't be created.
86 const char *OriginalFile = P ? P->getOriginalSourceFile() : nullptr;
87
88 if (!OriginalFile) {
89 PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header)
90 << ImplicitIncludePTH;
91 return;
92 }
93
94 AddImplicitInclude(Builder, OriginalFile);
95}
96
97/// \brief Add an implicit \#include using the original file used to generate
98/// a PCH file.
99static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP,
100 StringRef ImplicitIncludePCH) {
101 std::string OriginalFile =
102 ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(),
103 PP.getDiagnostics());
104 if (OriginalFile.empty())
105 return;
106
107 AddImplicitInclude(Builder, OriginalFile);
108}
109
110/// PickFP - This is used to pick a value based on the FP semantics of the
111/// specified FP model.
112template <typename T>
113static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal,
114 T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
115 T IEEEQuadVal) {
116 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle)
117 return IEEESingleVal;
118 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble)
119 return IEEEDoubleVal;
120 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended)
121 return X87DoubleExtendedVal;
122 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble)
123 return PPCDoubleDoubleVal;
124 assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad);
125 return IEEEQuadVal;
126}
127
128static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
129 const llvm::fltSemantics *Sem, StringRef Ext) {
130 const char *DenormMin, *Epsilon, *Max, *Min;
131 DenormMin = PickFP(Sem, "1.40129846e-45", "4.9406564584124654e-324",
132 "3.64519953188247460253e-4951",
133 "4.94065645841246544176568792868221e-324",
134 "6.47517511943802511092443895822764655e-4966");
135 int Digits = PickFP(Sem, 6, 15, 18, 31, 33);
136 Epsilon = PickFP(Sem, "1.19209290e-7", "2.2204460492503131e-16",
137 "1.08420217248550443401e-19",
138 "4.94065645841246544176568792868221e-324",
139 "1.92592994438723585305597794258492732e-34");
140 int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113);
141 int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931);
142 int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932);
143 int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381);
144 int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384);
145 Min = PickFP(Sem, "1.17549435e-38", "2.2250738585072014e-308",
146 "3.36210314311209350626e-4932",
147 "2.00416836000897277799610805135016e-292",
148 "3.36210314311209350626267781732175260e-4932");
149 Max = PickFP(Sem, "3.40282347e+38", "1.7976931348623157e+308",
150 "1.18973149535723176502e+4932",
151 "1.79769313486231580793728971405301e+308",
152 "1.18973149535723176508575932662800702e+4932");
153
154 SmallString<32> DefPrefix;
155 DefPrefix = "__";
156 DefPrefix += Prefix;
157 DefPrefix += "_";
158
159 Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext);
160 Builder.defineMacro(DefPrefix + "HAS_DENORM__");
161 Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits));
162 Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext);
163 Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
164 Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
165 Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits));
166
167 Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp));
168 Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp));
169 Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext);
170
171 Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")");
172 Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")");
173 Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext);
174}
175
176
177/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro
178/// named MacroName with the max value for a type with width 'TypeWidth' a
179/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL).
180static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth,
181 StringRef ValSuffix, bool isSigned,
182 MacroBuilder &Builder) {
183 llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth)
184 : llvm::APInt::getMaxValue(TypeWidth);
185 Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix);
186}
187
188/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
189/// the width, suffix, and signedness of the given type
190static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty,
191 const TargetInfo &TI, MacroBuilder &Builder) {
192 DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
193 TI.isTypeSigned(Ty), Builder);
194}
195
196static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty,
197 const TargetInfo &TI, MacroBuilder &Builder) {
198 bool IsSigned = TI.isTypeSigned(Ty);
199 StringRef FmtModifier = TI.getTypeFormatModifier(Ty);
200 for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) {
201 Builder.defineMacro(Prefix + "_FMT" + Twine(*Fmt) + "__",
202 Twine("\"") + FmtModifier + Twine(*Fmt) + "\"");
203 }
204}
205
206static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
207 MacroBuilder &Builder) {
208 Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
209}
210
211static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty,
212 const TargetInfo &TI, MacroBuilder &Builder) {
213 Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty)));
214}
215
216static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth,
217 const TargetInfo &TI, MacroBuilder &Builder) {
218 Builder.defineMacro(MacroName,
219 Twine(BitWidth / TI.getCharWidth()));
220}
221
222static void DefineExactWidthIntType(TargetInfo::IntType Ty,
223 const TargetInfo &TI,
224 MacroBuilder &Builder) {
225 int TypeWidth = TI.getTypeWidth(Ty);
226 bool IsSigned = TI.isTypeSigned(Ty);
227
228 // Use the target specified int64 type, when appropriate, so that [u]int64_t
229 // ends up being defined in terms of the correct type.
230 if (TypeWidth == 64)
231 Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
232
233 const char *Prefix = IsSigned ? "__INT" : "__UINT";
234
235 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
236 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
237
238 StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty));
239 Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
240}
241
242static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty,
243 const TargetInfo &TI,
244 MacroBuilder &Builder) {
245 int TypeWidth = TI.getTypeWidth(Ty);
246 bool IsSigned = TI.isTypeSigned(Ty);
247
248 // Use the target specified int64 type, when appropriate, so that [u]int64_t
249 // ends up being defined in terms of the correct type.
250 if (TypeWidth == 64)
251 Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
252
253 const char *Prefix = IsSigned ? "__INT" : "__UINT";
254 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
255}
256
257static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned,
258 const TargetInfo &TI,
259 MacroBuilder &Builder) {
260 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
261 if (Ty == TargetInfo::NoInt)
262 return;
263
264 const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST";
265 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
266 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
267 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
268}
269
270static void DefineFastIntType(unsigned TypeWidth, bool IsSigned,
271 const TargetInfo &TI, MacroBuilder &Builder) {
272 // stdint.h currently defines the fast int types as equivalent to the least
273 // types.
274 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
275 if (Ty == TargetInfo::NoInt)
276 return;
277
278 const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST";
279 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
280 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
281
282 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
283}
284
285
286/// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with
287/// the specified properties.
288static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign,
289 unsigned InlineWidth) {
290 // Fully-aligned, power-of-2 sizes no larger than the inline
291 // width will be inlined as lock-free operations.
292 if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 &&
293 TypeWidth <= InlineWidth)
294 return "2"; // "always lock free"
295 // We cannot be certain what operations the lib calls might be
296 // able to implement as lock-free on future processors.
297 return "1"; // "sometimes lock free"
298}
299
300/// \brief Add definitions required for a smooth interaction between
301/// Objective-C++ automated reference counting and libstdc++ (4.2).
302static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts,
303 MacroBuilder &Builder) {
304 Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR");
305
306 std::string Result;
307 {
308 // Provide specializations for the __is_scalar type trait so that
309 // lifetime-qualified objects are not considered "scalar" types, which
310 // libstdc++ uses as an indicator of the presence of trivial copy, assign,
311 // default-construct, and destruct semantics (none of which hold for
312 // lifetime-qualified objects in ARC).
313 llvm::raw_string_ostream Out(Result);
314
315 Out << "namespace std {\n"
316 << "\n"
317 << "struct __true_type;\n"
318 << "struct __false_type;\n"
319 << "\n";
320
321 Out << "template<typename _Tp> struct __is_scalar;\n"
322 << "\n";
323
324 Out << "template<typename _Tp>\n"
325 << "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n"
326 << " enum { __value = 0 };\n"
327 << " typedef __false_type __type;\n"
328 << "};\n"
329 << "\n";
330
331 if (LangOpts.ObjCARCWeak) {
332 Out << "template<typename _Tp>\n"
333 << "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n"
334 << " enum { __value = 0 };\n"
335 << " typedef __false_type __type;\n"
336 << "};\n"
337 << "\n";
338 }
339
340 Out << "template<typename _Tp>\n"
341 << "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))"
342 << " _Tp> {\n"
343 << " enum { __value = 0 };\n"
344 << " typedef __false_type __type;\n"
345 << "};\n"
346 << "\n";
347
348 Out << "}\n";
349 }
350 Builder.append(Result);
351}
352
353static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
354 const LangOptions &LangOpts,
355 const FrontendOptions &FEOpts,
356 MacroBuilder &Builder) {
357 if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP)
358 Builder.defineMacro("__STDC__");
359 if (LangOpts.Freestanding)
360 Builder.defineMacro("__STDC_HOSTED__", "0");
361 else
362 Builder.defineMacro("__STDC_HOSTED__");
363
364 if (!LangOpts.CPlusPlus) {
365 if (LangOpts.C11)
366 Builder.defineMacro("__STDC_VERSION__", "201112L");
367 else if (LangOpts.C99)
368 Builder.defineMacro("__STDC_VERSION__", "199901L");
369 else if (!LangOpts.GNUMode && LangOpts.Digraphs)
370 Builder.defineMacro("__STDC_VERSION__", "199409L");
371 } else {
372 // FIXME: Use correct value for C++17.
373 if (LangOpts.CPlusPlus1z)
374 Builder.defineMacro("__cplusplus", "201406L");
375 // C++1y [cpp.predefined]p1:
376 // The name __cplusplus is defined to the value 201402L when compiling a
377 // C++ translation unit.
378 else if (LangOpts.CPlusPlus14)
379 Builder.defineMacro("__cplusplus", "201402L");
380 // C++11 [cpp.predefined]p1:
381 // The name __cplusplus is defined to the value 201103L when compiling a
382 // C++ translation unit.
383 else if (LangOpts.CPlusPlus11)
384 Builder.defineMacro("__cplusplus", "201103L");
385 // C++03 [cpp.predefined]p1:
386 // The name __cplusplus is defined to the value 199711L when compiling a
387 // C++ translation unit.
388 else
389 Builder.defineMacro("__cplusplus", "199711L");
390 }
391
392 // In C11 these are environment macros. In C++11 they are only defined
393 // as part of <cuchar>. To prevent breakage when mixing C and C++
394 // code, define these macros unconditionally. We can define them
395 // unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit
396 // and 32-bit character literals.
397 Builder.defineMacro("__STDC_UTF_16__", "1");
398 Builder.defineMacro("__STDC_UTF_32__", "1");
399
400 if (LangOpts.ObjC1)
401 Builder.defineMacro("__OBJC__");
402
403 // Not "standard" per se, but available even with the -undef flag.
404 if (LangOpts.AsmPreprocessor)
405 Builder.defineMacro("__ASSEMBLER__");
406}
407
408/// Initialize the predefined C++ language feature test macros defined in
409/// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations".
410static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
411 MacroBuilder &Builder) {
412 // C++98 features.
413 if (LangOpts.RTTI)
414 Builder.defineMacro("__cpp_rtti", "199711");
415 if (LangOpts.CXXExceptions)
416 Builder.defineMacro("__cpp_exceptions", "199711");
417
418 // C++11 features.
419 if (LangOpts.CPlusPlus11) {
420 Builder.defineMacro("__cpp_unicode_characters", "200704");
421 Builder.defineMacro("__cpp_raw_strings", "200710");
422 Builder.defineMacro("__cpp_unicode_literals", "200710");
423 Builder.defineMacro("__cpp_user_defined_literals", "200809");
424 Builder.defineMacro("__cpp_lambdas", "200907");
425 Builder.defineMacro("__cpp_constexpr",
426 LangOpts.CPlusPlus14 ? "201304" : "200704");
427 Builder.defineMacro("__cpp_range_based_for", "200907");
428 Builder.defineMacro("__cpp_static_assert", "200410");
429 Builder.defineMacro("__cpp_decltype", "200707");
430 Builder.defineMacro("__cpp_attributes", "200809");
431 Builder.defineMacro("__cpp_rvalue_references", "200610");
432 Builder.defineMacro("__cpp_variadic_templates", "200704");
433 Builder.defineMacro("__cpp_initializer_lists", "200806");
434 Builder.defineMacro("__cpp_delegating_constructors", "200604");
435 Builder.defineMacro("__cpp_nsdmi", "200809");
436 Builder.defineMacro("__cpp_inheriting_constructors", "200802");
437 Builder.defineMacro("__cpp_ref_qualifiers", "200710");
438 Builder.defineMacro("__cpp_alias_templates", "200704");
439 }
440
441 // C++14 features.
442 if (LangOpts.CPlusPlus14) {
443 Builder.defineMacro("__cpp_binary_literals", "201304");
444 Builder.defineMacro("__cpp_digit_separators", "201309");
445 Builder.defineMacro("__cpp_init_captures", "201304");
446 Builder.defineMacro("__cpp_generic_lambdas", "201304");
447 Builder.defineMacro("__cpp_decltype_auto", "201304");
448 Builder.defineMacro("__cpp_return_type_deduction", "201304");
449 Builder.defineMacro("__cpp_aggregate_nsdmi", "201304");
450 Builder.defineMacro("__cpp_variable_templates", "201304");
451 }
452 if (LangOpts.SizedDeallocation)
453 Builder.defineMacro("__cpp_sized_deallocation", "201309");
454}
455
456static void InitializePredefinedMacros(const TargetInfo &TI,
457 const LangOptions &LangOpts,
458 const FrontendOptions &FEOpts,
459 MacroBuilder &Builder) {
460 // Compiler version introspection macros.
461 Builder.defineMacro("__llvm__"); // LLVM Backend
462 Builder.defineMacro("__clang__"); // Clang Frontend
463#define TOSTR2(X) #X
464#define TOSTR(X) TOSTR2(X)
465 Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR));
466 Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR));
467#ifdef CLANG_VERSION_PATCHLEVEL
468 Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL));
469#else
470 Builder.defineMacro("__clang_patchlevel__", "0");
471#endif
472 Builder.defineMacro("__clang_version__",
473 "\"" CLANG_VERSION_STRING " "
474 + getClangFullRepositoryVersion() + "\"");
475#undef TOSTR
476#undef TOSTR2
477 if (!LangOpts.MSVCCompat) {
478 // Currently claim to be compatible with GCC 4.2.1-5621, but only if we're
479 // not compiling for MSVC compatibility
480 Builder.defineMacro("__GNUC_MINOR__", "2");
481 Builder.defineMacro("__GNUC_PATCHLEVEL__", "1");
482 Builder.defineMacro("__GNUC__", "4");
483 Builder.defineMacro("__GXX_ABI_VERSION", "1002");
484 }
485
486 // Define macros for the C11 / C++11 memory orderings
487 Builder.defineMacro("__ATOMIC_RELAXED", "0");
488 Builder.defineMacro("__ATOMIC_CONSUME", "1");
489 Builder.defineMacro("__ATOMIC_ACQUIRE", "2");
490 Builder.defineMacro("__ATOMIC_RELEASE", "3");
491 Builder.defineMacro("__ATOMIC_ACQ_REL", "4");
492 Builder.defineMacro("__ATOMIC_SEQ_CST", "5");
493
494 // Support for #pragma redefine_extname (Sun compatibility)
495 Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1");
496
497 // As sad as it is, enough software depends on the __VERSION__ for version
498 // checks that it is necessary to report 4.2.1 (the base GCC version we claim
499 // compatibility with) first.
500 Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible " +
501 Twine(getClangFullCPPVersion()) + "\"");
502
503 // Initialize language-specific preprocessor defines.
504
505 // Standard conforming mode?
506 if (!LangOpts.GNUMode && !LangOpts.MSVCCompat)
507 Builder.defineMacro("__STRICT_ANSI__");
508
509 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus11)
510 Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
511
512 if (LangOpts.ObjC1) {
513 if (LangOpts.ObjCRuntime.isNonFragile()) {
514 Builder.defineMacro("__OBJC2__");
515
516 if (LangOpts.ObjCExceptions)
517 Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
518 }
519
520 if (LangOpts.getGC() != LangOptions::NonGC)
521 Builder.defineMacro("__OBJC_GC__");
522
523 if (LangOpts.ObjCRuntime.isNeXTFamily())
524 Builder.defineMacro("__NEXT_RUNTIME__");
525
526 if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) {
527 VersionTuple tuple = LangOpts.ObjCRuntime.getVersion();
528
529 unsigned minor = 0;
530 if (tuple.getMinor().hasValue())
531 minor = tuple.getMinor().getValue();
532
533 unsigned subminor = 0;
534 if (tuple.getSubminor().hasValue())
535 subminor = tuple.getSubminor().getValue();
536
537 Builder.defineMacro("__OBJFW_RUNTIME_ABI__",
538 Twine(tuple.getMajor() * 10000 + minor * 100 +
539 subminor));
540 }
541
542 Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))");
543 Builder.defineMacro("IBOutletCollection(ClassName)",
544 "__attribute__((iboutletcollection(ClassName)))");
545 Builder.defineMacro("IBAction", "void)__attribute__((ibaction)");
546 Builder.defineMacro("IBInspectable", "");
547 Builder.defineMacro("IB_DESIGNABLE", "");
548 }
549
550 if (LangOpts.CPlusPlus)
551 InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder);
552
553 // darwin_constant_cfstrings controls this. This is also dependent
554 // on other things like the runtime I believe. This is set even for C code.
555 if (!LangOpts.NoConstantCFStrings)
556 Builder.defineMacro("__CONSTANT_CFSTRINGS__");
557
558 if (LangOpts.ObjC2)
559 Builder.defineMacro("OBJC_NEW_PROPERTIES");
560
561 if (LangOpts.PascalStrings)
562 Builder.defineMacro("__PASCAL_STRINGS__");
563
564 if (LangOpts.Blocks) {
565 Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
566 Builder.defineMacro("__BLOCKS__");
567 }
568
569 if (!LangOpts.MSVCCompat && LangOpts.Exceptions)
570 Builder.defineMacro("__EXCEPTIONS");
571 if (!LangOpts.MSVCCompat && LangOpts.RTTI)
572 Builder.defineMacro("__GXX_RTTI");
573 if (LangOpts.SjLjExceptions)
574 Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
575
576 if (LangOpts.Deprecated)
577 Builder.defineMacro("__DEPRECATED");
578
579 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus) {
580 Builder.defineMacro("__GNUG__", "4");
581 Builder.defineMacro("__GXX_WEAK__");
582 Builder.defineMacro("__private_extern__", "extern");
583 }
584
585 if (LangOpts.MicrosoftExt) {
586 if (LangOpts.WChar) {
587 // wchar_t supported as a keyword.
588 Builder.defineMacro("_WCHAR_T_DEFINED");
589 Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
590 }
591 }
592
593 if (LangOpts.Optimize)
594 Builder.defineMacro("__OPTIMIZE__");
595 if (LangOpts.OptimizeSize)
596 Builder.defineMacro("__OPTIMIZE_SIZE__");
597
598 if (LangOpts.FastMath)
599 Builder.defineMacro("__FAST_MATH__");
600
601 // Initialize target-specific preprocessor defines.
602
603 // __BYTE_ORDER__ was added in GCC 4.6. It's analogous
604 // to the macro __BYTE_ORDER (no trailing underscores)
605 // from glibc's <endian.h> header.
606 // We don't support the PDP-11 as a target, but include
607 // the define so it can still be compared against.
608 Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234");
609 Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321");
610 Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412");
611 if (TI.isBigEndian()) {
612 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__");
613 Builder.defineMacro("__BIG_ENDIAN__");
614 } else {
615 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
616 Builder.defineMacro("__LITTLE_ENDIAN__");
617 }
618
619 if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64
620 && TI.getIntWidth() == 32) {
621 Builder.defineMacro("_LP64");
622 Builder.defineMacro("__LP64__");
623 }
624
625 if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32
626 && TI.getIntWidth() == 32) {
627 Builder.defineMacro("_ILP32");
628 Builder.defineMacro("__ILP32__");
629 }
630
631 // Define type sizing macros based on the target properties.
632 assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
633 Builder.defineMacro("__CHAR_BIT__", "8");
634
635 DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder);
636 DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
637 DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder);
638 DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder);
639 DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder);
640 DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder);
641 DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder);
642 DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder);
643
644 DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder);
645 DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder);
646 DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder);
647 DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder);
648
649 DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder);
650 DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder);
651 DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder);
652 DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder);
653 DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder);
654 DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder);
655 DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder);
656 DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder);
657 DefineTypeSizeof("__SIZEOF_PTRDIFF_T__",
658 TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder);
659 DefineTypeSizeof("__SIZEOF_SIZE_T__",
660 TI.getTypeWidth(TI.getSizeType()), TI, Builder);
661 DefineTypeSizeof("__SIZEOF_WCHAR_T__",
662 TI.getTypeWidth(TI.getWCharType()), TI, Builder);
663 DefineTypeSizeof("__SIZEOF_WINT_T__",
664 TI.getTypeWidth(TI.getWIntType()), TI, Builder);
| 1//===--- InitPreprocessor.cpp - PP initialization code. ---------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the clang::InitializePreprocessor function.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/Frontend/Utils.h"
15#include "clang/Basic/FileManager.h"
16#include "clang/Basic/MacroBuilder.h"
17#include "clang/Basic/SourceManager.h"
18#include "clang/Basic/TargetInfo.h"
19#include "clang/Basic/Version.h"
20#include "clang/Frontend/FrontendDiagnostic.h"
21#include "clang/Frontend/FrontendOptions.h"
22#include "clang/Lex/HeaderSearch.h"
23#include "clang/Lex/Preprocessor.h"
24#include "clang/Lex/PreprocessorOptions.h"
25#include "clang/Serialization/ASTReader.h"
26#include "llvm/ADT/APFloat.h"
27#include "llvm/Support/FileSystem.h"
28#include "llvm/Support/MemoryBuffer.h"
29#include "llvm/Support/Path.h"
30using namespace clang;
31
32static bool MacroBodyEndsInBackslash(StringRef MacroBody) {
33 while (!MacroBody.empty() && isWhitespace(MacroBody.back()))
34 MacroBody = MacroBody.drop_back();
35 return !MacroBody.empty() && MacroBody.back() == '\\';
36}
37
38// Append a #define line to Buf for Macro. Macro should be of the form XXX,
39// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
40// "#define XXX Y z W". To get a #define with no value, use "XXX=".
41static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro,
42 DiagnosticsEngine &Diags) {
43 std::pair<StringRef, StringRef> MacroPair = Macro.split('=');
44 StringRef MacroName = MacroPair.first;
45 StringRef MacroBody = MacroPair.second;
46 if (MacroName.size() != Macro.size()) {
47 // Per GCC -D semantics, the macro ends at \n if it exists.
48 StringRef::size_type End = MacroBody.find_first_of("\n\r");
49 if (End != StringRef::npos)
50 Diags.Report(diag::warn_fe_macro_contains_embedded_newline)
51 << MacroName;
52 MacroBody = MacroBody.substr(0, End);
53 // We handle macro bodies which end in a backslash by appending an extra
54 // backslash+newline. This makes sure we don't accidentally treat the
55 // backslash as a line continuation marker.
56 if (MacroBodyEndsInBackslash(MacroBody))
57 Builder.defineMacro(MacroName, Twine(MacroBody) + "\\\n");
58 else
59 Builder.defineMacro(MacroName, MacroBody);
60 } else {
61 // Push "macroname 1".
62 Builder.defineMacro(Macro);
63 }
64}
65
66/// AddImplicitInclude - Add an implicit \#include of the specified file to the
67/// predefines buffer.
68/// As these includes are generated by -include arguments the header search
69/// logic is going to search relatively to the current working directory.
70static void AddImplicitInclude(MacroBuilder &Builder, StringRef File) {
71 Builder.append(Twine("#include \"") + File + "\"");
72}
73
74static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) {
75 Builder.append(Twine("#__include_macros \"") + File + "\"");
76 // Marker token to stop the __include_macros fetch loop.
77 Builder.append("##"); // ##?
78}
79
80/// AddImplicitIncludePTH - Add an implicit \#include using the original file
81/// used to generate a PTH cache.
82static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP,
83 StringRef ImplicitIncludePTH) {
84 PTHManager *P = PP.getPTHManager();
85 // Null check 'P' in the corner case where it couldn't be created.
86 const char *OriginalFile = P ? P->getOriginalSourceFile() : nullptr;
87
88 if (!OriginalFile) {
89 PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header)
90 << ImplicitIncludePTH;
91 return;
92 }
93
94 AddImplicitInclude(Builder, OriginalFile);
95}
96
97/// \brief Add an implicit \#include using the original file used to generate
98/// a PCH file.
99static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP,
100 StringRef ImplicitIncludePCH) {
101 std::string OriginalFile =
102 ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(),
103 PP.getDiagnostics());
104 if (OriginalFile.empty())
105 return;
106
107 AddImplicitInclude(Builder, OriginalFile);
108}
109
110/// PickFP - This is used to pick a value based on the FP semantics of the
111/// specified FP model.
112template <typename T>
113static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal,
114 T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
115 T IEEEQuadVal) {
116 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle)
117 return IEEESingleVal;
118 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble)
119 return IEEEDoubleVal;
120 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended)
121 return X87DoubleExtendedVal;
122 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble)
123 return PPCDoubleDoubleVal;
124 assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad);
125 return IEEEQuadVal;
126}
127
128static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
129 const llvm::fltSemantics *Sem, StringRef Ext) {
130 const char *DenormMin, *Epsilon, *Max, *Min;
131 DenormMin = PickFP(Sem, "1.40129846e-45", "4.9406564584124654e-324",
132 "3.64519953188247460253e-4951",
133 "4.94065645841246544176568792868221e-324",
134 "6.47517511943802511092443895822764655e-4966");
135 int Digits = PickFP(Sem, 6, 15, 18, 31, 33);
136 Epsilon = PickFP(Sem, "1.19209290e-7", "2.2204460492503131e-16",
137 "1.08420217248550443401e-19",
138 "4.94065645841246544176568792868221e-324",
139 "1.92592994438723585305597794258492732e-34");
140 int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113);
141 int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931);
142 int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932);
143 int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381);
144 int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384);
145 Min = PickFP(Sem, "1.17549435e-38", "2.2250738585072014e-308",
146 "3.36210314311209350626e-4932",
147 "2.00416836000897277799610805135016e-292",
148 "3.36210314311209350626267781732175260e-4932");
149 Max = PickFP(Sem, "3.40282347e+38", "1.7976931348623157e+308",
150 "1.18973149535723176502e+4932",
151 "1.79769313486231580793728971405301e+308",
152 "1.18973149535723176508575932662800702e+4932");
153
154 SmallString<32> DefPrefix;
155 DefPrefix = "__";
156 DefPrefix += Prefix;
157 DefPrefix += "_";
158
159 Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext);
160 Builder.defineMacro(DefPrefix + "HAS_DENORM__");
161 Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits));
162 Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext);
163 Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
164 Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
165 Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits));
166
167 Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp));
168 Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp));
169 Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext);
170
171 Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")");
172 Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")");
173 Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext);
174}
175
176
177/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro
178/// named MacroName with the max value for a type with width 'TypeWidth' a
179/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL).
180static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth,
181 StringRef ValSuffix, bool isSigned,
182 MacroBuilder &Builder) {
183 llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth)
184 : llvm::APInt::getMaxValue(TypeWidth);
185 Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix);
186}
187
188/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
189/// the width, suffix, and signedness of the given type
190static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty,
191 const TargetInfo &TI, MacroBuilder &Builder) {
192 DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
193 TI.isTypeSigned(Ty), Builder);
194}
195
196static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty,
197 const TargetInfo &TI, MacroBuilder &Builder) {
198 bool IsSigned = TI.isTypeSigned(Ty);
199 StringRef FmtModifier = TI.getTypeFormatModifier(Ty);
200 for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) {
201 Builder.defineMacro(Prefix + "_FMT" + Twine(*Fmt) + "__",
202 Twine("\"") + FmtModifier + Twine(*Fmt) + "\"");
203 }
204}
205
206static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
207 MacroBuilder &Builder) {
208 Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
209}
210
211static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty,
212 const TargetInfo &TI, MacroBuilder &Builder) {
213 Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty)));
214}
215
216static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth,
217 const TargetInfo &TI, MacroBuilder &Builder) {
218 Builder.defineMacro(MacroName,
219 Twine(BitWidth / TI.getCharWidth()));
220}
221
222static void DefineExactWidthIntType(TargetInfo::IntType Ty,
223 const TargetInfo &TI,
224 MacroBuilder &Builder) {
225 int TypeWidth = TI.getTypeWidth(Ty);
226 bool IsSigned = TI.isTypeSigned(Ty);
227
228 // Use the target specified int64 type, when appropriate, so that [u]int64_t
229 // ends up being defined in terms of the correct type.
230 if (TypeWidth == 64)
231 Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
232
233 const char *Prefix = IsSigned ? "__INT" : "__UINT";
234
235 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
236 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
237
238 StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty));
239 Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
240}
241
242static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty,
243 const TargetInfo &TI,
244 MacroBuilder &Builder) {
245 int TypeWidth = TI.getTypeWidth(Ty);
246 bool IsSigned = TI.isTypeSigned(Ty);
247
248 // Use the target specified int64 type, when appropriate, so that [u]int64_t
249 // ends up being defined in terms of the correct type.
250 if (TypeWidth == 64)
251 Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
252
253 const char *Prefix = IsSigned ? "__INT" : "__UINT";
254 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
255}
256
257static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned,
258 const TargetInfo &TI,
259 MacroBuilder &Builder) {
260 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
261 if (Ty == TargetInfo::NoInt)
262 return;
263
264 const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST";
265 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
266 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
267 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
268}
269
270static void DefineFastIntType(unsigned TypeWidth, bool IsSigned,
271 const TargetInfo &TI, MacroBuilder &Builder) {
272 // stdint.h currently defines the fast int types as equivalent to the least
273 // types.
274 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
275 if (Ty == TargetInfo::NoInt)
276 return;
277
278 const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST";
279 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
280 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
281
282 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
283}
284
285
286/// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with
287/// the specified properties.
288static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign,
289 unsigned InlineWidth) {
290 // Fully-aligned, power-of-2 sizes no larger than the inline
291 // width will be inlined as lock-free operations.
292 if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 &&
293 TypeWidth <= InlineWidth)
294 return "2"; // "always lock free"
295 // We cannot be certain what operations the lib calls might be
296 // able to implement as lock-free on future processors.
297 return "1"; // "sometimes lock free"
298}
299
300/// \brief Add definitions required for a smooth interaction between
301/// Objective-C++ automated reference counting and libstdc++ (4.2).
302static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts,
303 MacroBuilder &Builder) {
304 Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR");
305
306 std::string Result;
307 {
308 // Provide specializations for the __is_scalar type trait so that
309 // lifetime-qualified objects are not considered "scalar" types, which
310 // libstdc++ uses as an indicator of the presence of trivial copy, assign,
311 // default-construct, and destruct semantics (none of which hold for
312 // lifetime-qualified objects in ARC).
313 llvm::raw_string_ostream Out(Result);
314
315 Out << "namespace std {\n"
316 << "\n"
317 << "struct __true_type;\n"
318 << "struct __false_type;\n"
319 << "\n";
320
321 Out << "template<typename _Tp> struct __is_scalar;\n"
322 << "\n";
323
324 Out << "template<typename _Tp>\n"
325 << "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n"
326 << " enum { __value = 0 };\n"
327 << " typedef __false_type __type;\n"
328 << "};\n"
329 << "\n";
330
331 if (LangOpts.ObjCARCWeak) {
332 Out << "template<typename _Tp>\n"
333 << "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n"
334 << " enum { __value = 0 };\n"
335 << " typedef __false_type __type;\n"
336 << "};\n"
337 << "\n";
338 }
339
340 Out << "template<typename _Tp>\n"
341 << "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))"
342 << " _Tp> {\n"
343 << " enum { __value = 0 };\n"
344 << " typedef __false_type __type;\n"
345 << "};\n"
346 << "\n";
347
348 Out << "}\n";
349 }
350 Builder.append(Result);
351}
352
353static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
354 const LangOptions &LangOpts,
355 const FrontendOptions &FEOpts,
356 MacroBuilder &Builder) {
357 if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP)
358 Builder.defineMacro("__STDC__");
359 if (LangOpts.Freestanding)
360 Builder.defineMacro("__STDC_HOSTED__", "0");
361 else
362 Builder.defineMacro("__STDC_HOSTED__");
363
364 if (!LangOpts.CPlusPlus) {
365 if (LangOpts.C11)
366 Builder.defineMacro("__STDC_VERSION__", "201112L");
367 else if (LangOpts.C99)
368 Builder.defineMacro("__STDC_VERSION__", "199901L");
369 else if (!LangOpts.GNUMode && LangOpts.Digraphs)
370 Builder.defineMacro("__STDC_VERSION__", "199409L");
371 } else {
372 // FIXME: Use correct value for C++17.
373 if (LangOpts.CPlusPlus1z)
374 Builder.defineMacro("__cplusplus", "201406L");
375 // C++1y [cpp.predefined]p1:
376 // The name __cplusplus is defined to the value 201402L when compiling a
377 // C++ translation unit.
378 else if (LangOpts.CPlusPlus14)
379 Builder.defineMacro("__cplusplus", "201402L");
380 // C++11 [cpp.predefined]p1:
381 // The name __cplusplus is defined to the value 201103L when compiling a
382 // C++ translation unit.
383 else if (LangOpts.CPlusPlus11)
384 Builder.defineMacro("__cplusplus", "201103L");
385 // C++03 [cpp.predefined]p1:
386 // The name __cplusplus is defined to the value 199711L when compiling a
387 // C++ translation unit.
388 else
389 Builder.defineMacro("__cplusplus", "199711L");
390 }
391
392 // In C11 these are environment macros. In C++11 they are only defined
393 // as part of <cuchar>. To prevent breakage when mixing C and C++
394 // code, define these macros unconditionally. We can define them
395 // unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit
396 // and 32-bit character literals.
397 Builder.defineMacro("__STDC_UTF_16__", "1");
398 Builder.defineMacro("__STDC_UTF_32__", "1");
399
400 if (LangOpts.ObjC1)
401 Builder.defineMacro("__OBJC__");
402
403 // Not "standard" per se, but available even with the -undef flag.
404 if (LangOpts.AsmPreprocessor)
405 Builder.defineMacro("__ASSEMBLER__");
406}
407
408/// Initialize the predefined C++ language feature test macros defined in
409/// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations".
410static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
411 MacroBuilder &Builder) {
412 // C++98 features.
413 if (LangOpts.RTTI)
414 Builder.defineMacro("__cpp_rtti", "199711");
415 if (LangOpts.CXXExceptions)
416 Builder.defineMacro("__cpp_exceptions", "199711");
417
418 // C++11 features.
419 if (LangOpts.CPlusPlus11) {
420 Builder.defineMacro("__cpp_unicode_characters", "200704");
421 Builder.defineMacro("__cpp_raw_strings", "200710");
422 Builder.defineMacro("__cpp_unicode_literals", "200710");
423 Builder.defineMacro("__cpp_user_defined_literals", "200809");
424 Builder.defineMacro("__cpp_lambdas", "200907");
425 Builder.defineMacro("__cpp_constexpr",
426 LangOpts.CPlusPlus14 ? "201304" : "200704");
427 Builder.defineMacro("__cpp_range_based_for", "200907");
428 Builder.defineMacro("__cpp_static_assert", "200410");
429 Builder.defineMacro("__cpp_decltype", "200707");
430 Builder.defineMacro("__cpp_attributes", "200809");
431 Builder.defineMacro("__cpp_rvalue_references", "200610");
432 Builder.defineMacro("__cpp_variadic_templates", "200704");
433 Builder.defineMacro("__cpp_initializer_lists", "200806");
434 Builder.defineMacro("__cpp_delegating_constructors", "200604");
435 Builder.defineMacro("__cpp_nsdmi", "200809");
436 Builder.defineMacro("__cpp_inheriting_constructors", "200802");
437 Builder.defineMacro("__cpp_ref_qualifiers", "200710");
438 Builder.defineMacro("__cpp_alias_templates", "200704");
439 }
440
441 // C++14 features.
442 if (LangOpts.CPlusPlus14) {
443 Builder.defineMacro("__cpp_binary_literals", "201304");
444 Builder.defineMacro("__cpp_digit_separators", "201309");
445 Builder.defineMacro("__cpp_init_captures", "201304");
446 Builder.defineMacro("__cpp_generic_lambdas", "201304");
447 Builder.defineMacro("__cpp_decltype_auto", "201304");
448 Builder.defineMacro("__cpp_return_type_deduction", "201304");
449 Builder.defineMacro("__cpp_aggregate_nsdmi", "201304");
450 Builder.defineMacro("__cpp_variable_templates", "201304");
451 }
452 if (LangOpts.SizedDeallocation)
453 Builder.defineMacro("__cpp_sized_deallocation", "201309");
454}
455
456static void InitializePredefinedMacros(const TargetInfo &TI,
457 const LangOptions &LangOpts,
458 const FrontendOptions &FEOpts,
459 MacroBuilder &Builder) {
460 // Compiler version introspection macros.
461 Builder.defineMacro("__llvm__"); // LLVM Backend
462 Builder.defineMacro("__clang__"); // Clang Frontend
463#define TOSTR2(X) #X
464#define TOSTR(X) TOSTR2(X)
465 Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR));
466 Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR));
467#ifdef CLANG_VERSION_PATCHLEVEL
468 Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL));
469#else
470 Builder.defineMacro("__clang_patchlevel__", "0");
471#endif
472 Builder.defineMacro("__clang_version__",
473 "\"" CLANG_VERSION_STRING " "
474 + getClangFullRepositoryVersion() + "\"");
475#undef TOSTR
476#undef TOSTR2
477 if (!LangOpts.MSVCCompat) {
478 // Currently claim to be compatible with GCC 4.2.1-5621, but only if we're
479 // not compiling for MSVC compatibility
480 Builder.defineMacro("__GNUC_MINOR__", "2");
481 Builder.defineMacro("__GNUC_PATCHLEVEL__", "1");
482 Builder.defineMacro("__GNUC__", "4");
483 Builder.defineMacro("__GXX_ABI_VERSION", "1002");
484 }
485
486 // Define macros for the C11 / C++11 memory orderings
487 Builder.defineMacro("__ATOMIC_RELAXED", "0");
488 Builder.defineMacro("__ATOMIC_CONSUME", "1");
489 Builder.defineMacro("__ATOMIC_ACQUIRE", "2");
490 Builder.defineMacro("__ATOMIC_RELEASE", "3");
491 Builder.defineMacro("__ATOMIC_ACQ_REL", "4");
492 Builder.defineMacro("__ATOMIC_SEQ_CST", "5");
493
494 // Support for #pragma redefine_extname (Sun compatibility)
495 Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1");
496
497 // As sad as it is, enough software depends on the __VERSION__ for version
498 // checks that it is necessary to report 4.2.1 (the base GCC version we claim
499 // compatibility with) first.
500 Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible " +
501 Twine(getClangFullCPPVersion()) + "\"");
502
503 // Initialize language-specific preprocessor defines.
504
505 // Standard conforming mode?
506 if (!LangOpts.GNUMode && !LangOpts.MSVCCompat)
507 Builder.defineMacro("__STRICT_ANSI__");
508
509 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus11)
510 Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
511
512 if (LangOpts.ObjC1) {
513 if (LangOpts.ObjCRuntime.isNonFragile()) {
514 Builder.defineMacro("__OBJC2__");
515
516 if (LangOpts.ObjCExceptions)
517 Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
518 }
519
520 if (LangOpts.getGC() != LangOptions::NonGC)
521 Builder.defineMacro("__OBJC_GC__");
522
523 if (LangOpts.ObjCRuntime.isNeXTFamily())
524 Builder.defineMacro("__NEXT_RUNTIME__");
525
526 if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) {
527 VersionTuple tuple = LangOpts.ObjCRuntime.getVersion();
528
529 unsigned minor = 0;
530 if (tuple.getMinor().hasValue())
531 minor = tuple.getMinor().getValue();
532
533 unsigned subminor = 0;
534 if (tuple.getSubminor().hasValue())
535 subminor = tuple.getSubminor().getValue();
536
537 Builder.defineMacro("__OBJFW_RUNTIME_ABI__",
538 Twine(tuple.getMajor() * 10000 + minor * 100 +
539 subminor));
540 }
541
542 Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))");
543 Builder.defineMacro("IBOutletCollection(ClassName)",
544 "__attribute__((iboutletcollection(ClassName)))");
545 Builder.defineMacro("IBAction", "void)__attribute__((ibaction)");
546 Builder.defineMacro("IBInspectable", "");
547 Builder.defineMacro("IB_DESIGNABLE", "");
548 }
549
550 if (LangOpts.CPlusPlus)
551 InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder);
552
553 // darwin_constant_cfstrings controls this. This is also dependent
554 // on other things like the runtime I believe. This is set even for C code.
555 if (!LangOpts.NoConstantCFStrings)
556 Builder.defineMacro("__CONSTANT_CFSTRINGS__");
557
558 if (LangOpts.ObjC2)
559 Builder.defineMacro("OBJC_NEW_PROPERTIES");
560
561 if (LangOpts.PascalStrings)
562 Builder.defineMacro("__PASCAL_STRINGS__");
563
564 if (LangOpts.Blocks) {
565 Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
566 Builder.defineMacro("__BLOCKS__");
567 }
568
569 if (!LangOpts.MSVCCompat && LangOpts.Exceptions)
570 Builder.defineMacro("__EXCEPTIONS");
571 if (!LangOpts.MSVCCompat && LangOpts.RTTI)
572 Builder.defineMacro("__GXX_RTTI");
573 if (LangOpts.SjLjExceptions)
574 Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
575
576 if (LangOpts.Deprecated)
577 Builder.defineMacro("__DEPRECATED");
578
579 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus) {
580 Builder.defineMacro("__GNUG__", "4");
581 Builder.defineMacro("__GXX_WEAK__");
582 Builder.defineMacro("__private_extern__", "extern");
583 }
584
585 if (LangOpts.MicrosoftExt) {
586 if (LangOpts.WChar) {
587 // wchar_t supported as a keyword.
588 Builder.defineMacro("_WCHAR_T_DEFINED");
589 Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
590 }
591 }
592
593 if (LangOpts.Optimize)
594 Builder.defineMacro("__OPTIMIZE__");
595 if (LangOpts.OptimizeSize)
596 Builder.defineMacro("__OPTIMIZE_SIZE__");
597
598 if (LangOpts.FastMath)
599 Builder.defineMacro("__FAST_MATH__");
600
601 // Initialize target-specific preprocessor defines.
602
603 // __BYTE_ORDER__ was added in GCC 4.6. It's analogous
604 // to the macro __BYTE_ORDER (no trailing underscores)
605 // from glibc's <endian.h> header.
606 // We don't support the PDP-11 as a target, but include
607 // the define so it can still be compared against.
608 Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234");
609 Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321");
610 Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412");
611 if (TI.isBigEndian()) {
612 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__");
613 Builder.defineMacro("__BIG_ENDIAN__");
614 } else {
615 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
616 Builder.defineMacro("__LITTLE_ENDIAN__");
617 }
618
619 if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64
620 && TI.getIntWidth() == 32) {
621 Builder.defineMacro("_LP64");
622 Builder.defineMacro("__LP64__");
623 }
624
625 if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32
626 && TI.getIntWidth() == 32) {
627 Builder.defineMacro("_ILP32");
628 Builder.defineMacro("__ILP32__");
629 }
630
631 // Define type sizing macros based on the target properties.
632 assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
633 Builder.defineMacro("__CHAR_BIT__", "8");
634
635 DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder);
636 DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
637 DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder);
638 DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder);
639 DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder);
640 DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder);
641 DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder);
642 DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder);
643
644 DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder);
645 DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder);
646 DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder);
647 DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder);
648
649 DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder);
650 DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder);
651 DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder);
652 DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder);
653 DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder);
654 DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder);
655 DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder);
656 DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder);
657 DefineTypeSizeof("__SIZEOF_PTRDIFF_T__",
658 TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder);
659 DefineTypeSizeof("__SIZEOF_SIZE_T__",
660 TI.getTypeWidth(TI.getSizeType()), TI, Builder);
661 DefineTypeSizeof("__SIZEOF_WCHAR_T__",
662 TI.getTypeWidth(TI.getWCharType()), TI, Builder);
663 DefineTypeSizeof("__SIZEOF_WINT_T__",
664 TI.getTypeWidth(TI.getWIntType()), TI, Builder);
|
671 DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
672
673 DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
674 DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder);
675 Builder.defineMacro("__INTMAX_C_SUFFIX__",
676 TI.getTypeConstantSuffix(TI.getIntMaxType()));
677 DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
678 DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder);
679 Builder.defineMacro("__UINTMAX_C_SUFFIX__",
680 TI.getTypeConstantSuffix(TI.getUIntMaxType()));
681 DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
682 DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
683 DefineFmt("__PTRDIFF", TI.getPtrDiffType(0), TI, Builder);
684 DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
685 DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
686 DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder);
687 DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
688 DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
689 DefineFmt("__SIZE", TI.getSizeType(), TI, Builder);
690 DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder);
691 DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
692 DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder);
693 DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
694 DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder);
695 DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder);
696 DefineTypeSize("__SIG_ATOMIC_MAX__", TI.getSigAtomicType(), TI, Builder);
697 DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
698 DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
699
700 DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder);
701 DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder);
702 DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder);
703 DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder);
704
705 DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
706 DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
707 DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
708
709 // Define a __POINTER_WIDTH__ macro for stdint.h.
710 Builder.defineMacro("__POINTER_WIDTH__",
711 Twine((int)TI.getPointerWidth(0)));
712
713 if (!LangOpts.CharIsSigned)
714 Builder.defineMacro("__CHAR_UNSIGNED__");
715
716 if (!TargetInfo::isTypeSigned(TI.getWCharType()))
717 Builder.defineMacro("__WCHAR_UNSIGNED__");
718
719 if (!TargetInfo::isTypeSigned(TI.getWIntType()))
720 Builder.defineMacro("__WINT_UNSIGNED__");
721
722 // Define exact-width integer types for stdint.h
723 DefineExactWidthIntType(TargetInfo::SignedChar, TI, Builder);
724
725 if (TI.getShortWidth() > TI.getCharWidth())
726 DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder);
727
728 if (TI.getIntWidth() > TI.getShortWidth())
729 DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder);
730
731 if (TI.getLongWidth() > TI.getIntWidth())
732 DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder);
733
734 if (TI.getLongLongWidth() > TI.getLongWidth())
735 DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder);
736
737 DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder);
738 DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder);
739 DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder);
740
741 if (TI.getShortWidth() > TI.getCharWidth()) {
742 DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder);
743 DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder);
744 DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder);
745 }
746
747 if (TI.getIntWidth() > TI.getShortWidth()) {
748 DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder);
749 DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder);
750 DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder);
751 }
752
753 if (TI.getLongWidth() > TI.getIntWidth()) {
754 DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder);
755 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder);
756 DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder);
757 }
758
759 if (TI.getLongLongWidth() > TI.getLongWidth()) {
760 DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder);
761 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder);
762 DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder);
763 }
764
765 DefineLeastWidthIntType(8, true, TI, Builder);
766 DefineLeastWidthIntType(8, false, TI, Builder);
767 DefineLeastWidthIntType(16, true, TI, Builder);
768 DefineLeastWidthIntType(16, false, TI, Builder);
769 DefineLeastWidthIntType(32, true, TI, Builder);
770 DefineLeastWidthIntType(32, false, TI, Builder);
771 DefineLeastWidthIntType(64, true, TI, Builder);
772 DefineLeastWidthIntType(64, false, TI, Builder);
773
774 DefineFastIntType(8, true, TI, Builder);
775 DefineFastIntType(8, false, TI, Builder);
776 DefineFastIntType(16, true, TI, Builder);
777 DefineFastIntType(16, false, TI, Builder);
778 DefineFastIntType(32, true, TI, Builder);
779 DefineFastIntType(32, false, TI, Builder);
780 DefineFastIntType(64, true, TI, Builder);
781 DefineFastIntType(64, false, TI, Builder);
782
783 if (const char *Prefix = TI.getUserLabelPrefix())
784 Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
785
786 if (LangOpts.FastMath || LangOpts.FiniteMathOnly)
787 Builder.defineMacro("__FINITE_MATH_ONLY__", "1");
788 else
789 Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
790
791 if (!LangOpts.MSVCCompat) {
792 if (LangOpts.GNUInline)
793 Builder.defineMacro("__GNUC_GNU_INLINE__");
794 else
795 Builder.defineMacro("__GNUC_STDC_INLINE__");
796
797 // The value written by __atomic_test_and_set.
798 // FIXME: This is target-dependent.
799 Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
800
801 // Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
802 unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
803#define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
804 Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \
805 getLockFreeValue(TI.get##Type##Width(), \
806 TI.get##Type##Align(), \
807 InlineWidthBits));
808 DEFINE_LOCK_FREE_MACRO(BOOL, Bool);
809 DEFINE_LOCK_FREE_MACRO(CHAR, Char);
810 DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16);
811 DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32);
812 DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar);
813 DEFINE_LOCK_FREE_MACRO(SHORT, Short);
814 DEFINE_LOCK_FREE_MACRO(INT, Int);
815 DEFINE_LOCK_FREE_MACRO(LONG, Long);
816 DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
817 Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE",
818 getLockFreeValue(TI.getPointerWidth(0),
819 TI.getPointerAlign(0),
820 InlineWidthBits));
821#undef DEFINE_LOCK_FREE_MACRO
822 }
823
824 if (LangOpts.NoInlineDefine)
825 Builder.defineMacro("__NO_INLINE__");
826
827 if (unsigned PICLevel = LangOpts.PICLevel) {
828 Builder.defineMacro("__PIC__", Twine(PICLevel));
829 Builder.defineMacro("__pic__", Twine(PICLevel));
830 }
831 if (unsigned PIELevel = LangOpts.PIELevel) {
832 Builder.defineMacro("__PIE__", Twine(PIELevel));
833 Builder.defineMacro("__pie__", Twine(PIELevel));
834 }
835
836 // Macros to control C99 numerics and <float.h>
837 Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod()));
838 Builder.defineMacro("__FLT_RADIX__", "2");
839 int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36);
840 Builder.defineMacro("__DECIMAL_DIG__", Twine(Dig));
841
842 if (LangOpts.getStackProtector() == LangOptions::SSPOn)
843 Builder.defineMacro("__SSP__");
844 else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
845 Builder.defineMacro("__SSP_STRONG__", "2");
846 else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
847 Builder.defineMacro("__SSP_ALL__", "3");
848
849 if (FEOpts.ProgramAction == frontend::RewriteObjC)
850 Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
851
852 // Define a macro that exists only when using the static analyzer.
853 if (FEOpts.ProgramAction == frontend::RunAnalysis)
854 Builder.defineMacro("__clang_analyzer__");
855
856 if (LangOpts.FastRelaxedMath)
857 Builder.defineMacro("__FAST_RELAXED_MATH__");
858
859 if (LangOpts.ObjCAutoRefCount) {
860 Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))");
861 Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))");
862 Builder.defineMacro("__autoreleasing",
863 "__attribute__((objc_ownership(autoreleasing)))");
864 Builder.defineMacro("__unsafe_unretained",
865 "__attribute__((objc_ownership(none)))");
866 }
867
868 // OpenMP definition
869 if (LangOpts.OpenMP) {
870 // OpenMP 2.2:
871 // In implementations that support a preprocessor, the _OPENMP
872 // macro name is defined to have the decimal value yyyymm where
873 // yyyy and mm are the year and the month designations of the
874 // version of the OpenMP API that the implementation support.
875 Builder.defineMacro("_OPENMP", "201307");
876 }
877
878 // CUDA device path compilaton
879 if (LangOpts.CUDAIsDevice) {
880 // The CUDA_ARCH value is set for the GPU target specified in the NVPTX
881 // backend's target defines.
882 Builder.defineMacro("__CUDA_ARCH__");
883 }
884
885 // Get other target #defines.
886 TI.getTargetDefines(LangOpts, Builder);
887}
888
889/// InitializePreprocessor - Initialize the preprocessor getting it and the
890/// environment ready to process a single file. This returns true on error.
891///
892void clang::InitializePreprocessor(Preprocessor &PP,
893 const PreprocessorOptions &InitOpts,
894 const FrontendOptions &FEOpts) {
895 const LangOptions &LangOpts = PP.getLangOpts();
896 std::string PredefineBuffer;
897 PredefineBuffer.reserve(4080);
898 llvm::raw_string_ostream Predefines(PredefineBuffer);
899 MacroBuilder Builder(Predefines);
900
901 // Emit line markers for various builtin sections of the file. We don't do
902 // this in asm preprocessor mode, because "# 4" is not a line marker directive
903 // in this mode.
904 if (!PP.getLangOpts().AsmPreprocessor)
905 Builder.append("# 1 \"<built-in>\" 3");
906
907 // Install things like __POWERPC__, __GNUC__, etc into the macro table.
908 if (InitOpts.UsePredefines) {
909 InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts, Builder);
910
911 // Install definitions to make Objective-C++ ARC work well with various
912 // C++ Standard Library implementations.
913 if (LangOpts.ObjC1 && LangOpts.CPlusPlus && LangOpts.ObjCAutoRefCount) {
914 switch (InitOpts.ObjCXXARCStandardLibrary) {
915 case ARCXX_nolib:
916 case ARCXX_libcxx:
917 break;
918
919 case ARCXX_libstdcxx:
920 AddObjCXXARCLibstdcxxDefines(LangOpts, Builder);
921 break;
922 }
923 }
924 }
925
926 // Even with predefines off, some macros are still predefined.
927 // These should all be defined in the preprocessor according to the
928 // current language configuration.
929 InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(),
930 FEOpts, Builder);
931
932 // Add on the predefines from the driver. Wrap in a #line directive to report
933 // that they come from the command line.
934 if (!PP.getLangOpts().AsmPreprocessor)
935 Builder.append("# 1 \"<command line>\" 1");
936
937 // Process #define's and #undef's in the order they are given.
938 for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
939 if (InitOpts.Macros[i].second) // isUndef
940 Builder.undefineMacro(InitOpts.Macros[i].first);
941 else
942 DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
943 PP.getDiagnostics());
944 }
945
946 // If -imacros are specified, include them now. These are processed before
947 // any -include directives.
948 for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
949 AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]);
950
951 // Process -include-pch/-include-pth directives.
952 if (!InitOpts.ImplicitPCHInclude.empty())
953 AddImplicitIncludePCH(Builder, PP, InitOpts.ImplicitPCHInclude);
954 if (!InitOpts.ImplicitPTHInclude.empty())
955 AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude);
956
957 // Process -include directives.
958 for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
959 const std::string &Path = InitOpts.Includes[i];
960 AddImplicitInclude(Builder, Path);
961 }
962
963 // Exit the command line and go back to <built-in> (2 is LC_LEAVE).
964 if (!PP.getLangOpts().AsmPreprocessor)
965 Builder.append("# 1 \"<built-in>\" 2");
966
967 // Instruct the preprocessor to skip the preamble.
968 PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first,
969 InitOpts.PrecompiledPreambleBytes.second);
970
971 // Copy PredefinedBuffer into the Preprocessor.
972 PP.setPredefines(Predefines.str());
973}
| 666 DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
667
668 DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
669 DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder);
670 Builder.defineMacro("__INTMAX_C_SUFFIX__",
671 TI.getTypeConstantSuffix(TI.getIntMaxType()));
672 DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
673 DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder);
674 Builder.defineMacro("__UINTMAX_C_SUFFIX__",
675 TI.getTypeConstantSuffix(TI.getUIntMaxType()));
676 DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
677 DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
678 DefineFmt("__PTRDIFF", TI.getPtrDiffType(0), TI, Builder);
679 DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
680 DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
681 DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder);
682 DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
683 DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
684 DefineFmt("__SIZE", TI.getSizeType(), TI, Builder);
685 DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder);
686 DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
687 DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder);
688 DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
689 DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder);
690 DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder);
691 DefineTypeSize("__SIG_ATOMIC_MAX__", TI.getSigAtomicType(), TI, Builder);
692 DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
693 DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
694
695 DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder);
696 DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder);
697 DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder);
698 DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder);
699
700 DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
701 DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
702 DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
703
704 // Define a __POINTER_WIDTH__ macro for stdint.h.
705 Builder.defineMacro("__POINTER_WIDTH__",
706 Twine((int)TI.getPointerWidth(0)));
707
708 if (!LangOpts.CharIsSigned)
709 Builder.defineMacro("__CHAR_UNSIGNED__");
710
711 if (!TargetInfo::isTypeSigned(TI.getWCharType()))
712 Builder.defineMacro("__WCHAR_UNSIGNED__");
713
714 if (!TargetInfo::isTypeSigned(TI.getWIntType()))
715 Builder.defineMacro("__WINT_UNSIGNED__");
716
717 // Define exact-width integer types for stdint.h
718 DefineExactWidthIntType(TargetInfo::SignedChar, TI, Builder);
719
720 if (TI.getShortWidth() > TI.getCharWidth())
721 DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder);
722
723 if (TI.getIntWidth() > TI.getShortWidth())
724 DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder);
725
726 if (TI.getLongWidth() > TI.getIntWidth())
727 DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder);
728
729 if (TI.getLongLongWidth() > TI.getLongWidth())
730 DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder);
731
732 DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder);
733 DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder);
734 DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder);
735
736 if (TI.getShortWidth() > TI.getCharWidth()) {
737 DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder);
738 DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder);
739 DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder);
740 }
741
742 if (TI.getIntWidth() > TI.getShortWidth()) {
743 DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder);
744 DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder);
745 DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder);
746 }
747
748 if (TI.getLongWidth() > TI.getIntWidth()) {
749 DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder);
750 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder);
751 DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder);
752 }
753
754 if (TI.getLongLongWidth() > TI.getLongWidth()) {
755 DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder);
756 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder);
757 DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder);
758 }
759
760 DefineLeastWidthIntType(8, true, TI, Builder);
761 DefineLeastWidthIntType(8, false, TI, Builder);
762 DefineLeastWidthIntType(16, true, TI, Builder);
763 DefineLeastWidthIntType(16, false, TI, Builder);
764 DefineLeastWidthIntType(32, true, TI, Builder);
765 DefineLeastWidthIntType(32, false, TI, Builder);
766 DefineLeastWidthIntType(64, true, TI, Builder);
767 DefineLeastWidthIntType(64, false, TI, Builder);
768
769 DefineFastIntType(8, true, TI, Builder);
770 DefineFastIntType(8, false, TI, Builder);
771 DefineFastIntType(16, true, TI, Builder);
772 DefineFastIntType(16, false, TI, Builder);
773 DefineFastIntType(32, true, TI, Builder);
774 DefineFastIntType(32, false, TI, Builder);
775 DefineFastIntType(64, true, TI, Builder);
776 DefineFastIntType(64, false, TI, Builder);
777
778 if (const char *Prefix = TI.getUserLabelPrefix())
779 Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
780
781 if (LangOpts.FastMath || LangOpts.FiniteMathOnly)
782 Builder.defineMacro("__FINITE_MATH_ONLY__", "1");
783 else
784 Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
785
786 if (!LangOpts.MSVCCompat) {
787 if (LangOpts.GNUInline)
788 Builder.defineMacro("__GNUC_GNU_INLINE__");
789 else
790 Builder.defineMacro("__GNUC_STDC_INLINE__");
791
792 // The value written by __atomic_test_and_set.
793 // FIXME: This is target-dependent.
794 Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
795
796 // Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
797 unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
798#define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
799 Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \
800 getLockFreeValue(TI.get##Type##Width(), \
801 TI.get##Type##Align(), \
802 InlineWidthBits));
803 DEFINE_LOCK_FREE_MACRO(BOOL, Bool);
804 DEFINE_LOCK_FREE_MACRO(CHAR, Char);
805 DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16);
806 DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32);
807 DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar);
808 DEFINE_LOCK_FREE_MACRO(SHORT, Short);
809 DEFINE_LOCK_FREE_MACRO(INT, Int);
810 DEFINE_LOCK_FREE_MACRO(LONG, Long);
811 DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
812 Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE",
813 getLockFreeValue(TI.getPointerWidth(0),
814 TI.getPointerAlign(0),
815 InlineWidthBits));
816#undef DEFINE_LOCK_FREE_MACRO
817 }
818
819 if (LangOpts.NoInlineDefine)
820 Builder.defineMacro("__NO_INLINE__");
821
822 if (unsigned PICLevel = LangOpts.PICLevel) {
823 Builder.defineMacro("__PIC__", Twine(PICLevel));
824 Builder.defineMacro("__pic__", Twine(PICLevel));
825 }
826 if (unsigned PIELevel = LangOpts.PIELevel) {
827 Builder.defineMacro("__PIE__", Twine(PIELevel));
828 Builder.defineMacro("__pie__", Twine(PIELevel));
829 }
830
831 // Macros to control C99 numerics and <float.h>
832 Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod()));
833 Builder.defineMacro("__FLT_RADIX__", "2");
834 int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36);
835 Builder.defineMacro("__DECIMAL_DIG__", Twine(Dig));
836
837 if (LangOpts.getStackProtector() == LangOptions::SSPOn)
838 Builder.defineMacro("__SSP__");
839 else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
840 Builder.defineMacro("__SSP_STRONG__", "2");
841 else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
842 Builder.defineMacro("__SSP_ALL__", "3");
843
844 if (FEOpts.ProgramAction == frontend::RewriteObjC)
845 Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
846
847 // Define a macro that exists only when using the static analyzer.
848 if (FEOpts.ProgramAction == frontend::RunAnalysis)
849 Builder.defineMacro("__clang_analyzer__");
850
851 if (LangOpts.FastRelaxedMath)
852 Builder.defineMacro("__FAST_RELAXED_MATH__");
853
854 if (LangOpts.ObjCAutoRefCount) {
855 Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))");
856 Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))");
857 Builder.defineMacro("__autoreleasing",
858 "__attribute__((objc_ownership(autoreleasing)))");
859 Builder.defineMacro("__unsafe_unretained",
860 "__attribute__((objc_ownership(none)))");
861 }
862
863 // OpenMP definition
864 if (LangOpts.OpenMP) {
865 // OpenMP 2.2:
866 // In implementations that support a preprocessor, the _OPENMP
867 // macro name is defined to have the decimal value yyyymm where
868 // yyyy and mm are the year and the month designations of the
869 // version of the OpenMP API that the implementation support.
870 Builder.defineMacro("_OPENMP", "201307");
871 }
872
873 // CUDA device path compilaton
874 if (LangOpts.CUDAIsDevice) {
875 // The CUDA_ARCH value is set for the GPU target specified in the NVPTX
876 // backend's target defines.
877 Builder.defineMacro("__CUDA_ARCH__");
878 }
879
880 // Get other target #defines.
881 TI.getTargetDefines(LangOpts, Builder);
882}
883
884/// InitializePreprocessor - Initialize the preprocessor getting it and the
885/// environment ready to process a single file. This returns true on error.
886///
887void clang::InitializePreprocessor(Preprocessor &PP,
888 const PreprocessorOptions &InitOpts,
889 const FrontendOptions &FEOpts) {
890 const LangOptions &LangOpts = PP.getLangOpts();
891 std::string PredefineBuffer;
892 PredefineBuffer.reserve(4080);
893 llvm::raw_string_ostream Predefines(PredefineBuffer);
894 MacroBuilder Builder(Predefines);
895
896 // Emit line markers for various builtin sections of the file. We don't do
897 // this in asm preprocessor mode, because "# 4" is not a line marker directive
898 // in this mode.
899 if (!PP.getLangOpts().AsmPreprocessor)
900 Builder.append("# 1 \"<built-in>\" 3");
901
902 // Install things like __POWERPC__, __GNUC__, etc into the macro table.
903 if (InitOpts.UsePredefines) {
904 InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts, Builder);
905
906 // Install definitions to make Objective-C++ ARC work well with various
907 // C++ Standard Library implementations.
908 if (LangOpts.ObjC1 && LangOpts.CPlusPlus && LangOpts.ObjCAutoRefCount) {
909 switch (InitOpts.ObjCXXARCStandardLibrary) {
910 case ARCXX_nolib:
911 case ARCXX_libcxx:
912 break;
913
914 case ARCXX_libstdcxx:
915 AddObjCXXARCLibstdcxxDefines(LangOpts, Builder);
916 break;
917 }
918 }
919 }
920
921 // Even with predefines off, some macros are still predefined.
922 // These should all be defined in the preprocessor according to the
923 // current language configuration.
924 InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(),
925 FEOpts, Builder);
926
927 // Add on the predefines from the driver. Wrap in a #line directive to report
928 // that they come from the command line.
929 if (!PP.getLangOpts().AsmPreprocessor)
930 Builder.append("# 1 \"<command line>\" 1");
931
932 // Process #define's and #undef's in the order they are given.
933 for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
934 if (InitOpts.Macros[i].second) // isUndef
935 Builder.undefineMacro(InitOpts.Macros[i].first);
936 else
937 DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
938 PP.getDiagnostics());
939 }
940
941 // If -imacros are specified, include them now. These are processed before
942 // any -include directives.
943 for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
944 AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]);
945
946 // Process -include-pch/-include-pth directives.
947 if (!InitOpts.ImplicitPCHInclude.empty())
948 AddImplicitIncludePCH(Builder, PP, InitOpts.ImplicitPCHInclude);
949 if (!InitOpts.ImplicitPTHInclude.empty())
950 AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude);
951
952 // Process -include directives.
953 for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
954 const std::string &Path = InitOpts.Includes[i];
955 AddImplicitInclude(Builder, Path);
956 }
957
958 // Exit the command line and go back to <built-in> (2 is LC_LEAVE).
959 if (!PP.getLangOpts().AsmPreprocessor)
960 Builder.append("# 1 \"<built-in>\" 2");
961
962 // Instruct the preprocessor to skip the preamble.
963 PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first,
964 InitOpts.PrecompiledPreambleBytes.second);
965
966 // Copy PredefinedBuffer into the Preprocessor.
967 PP.setPredefines(Predefines.str());
968}
|