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Chris Lattnere116ccf2009-04-21 05:40:52 +00001//===--- 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
Daniel Dunbar8863b982009-11-07 04:20:15 +000014#include "clang/Frontend/Utils.h"
Chandler Carruth55fc8732012-12-04 09:13:33 +000015#include "clang/Basic/FileManager.h"
Chandler Carruth103b71c2010-01-20 06:13:02 +000016#include "clang/Basic/MacroBuilder.h"
Chandler Carruth55fc8732012-12-04 09:13:33 +000017#include "clang/Basic/SourceManager.h"
Chris Lattnere116ccf2009-04-21 05:40:52 +000018#include "clang/Basic/TargetInfo.h"
Chandler Carruth55fc8732012-12-04 09:13:33 +000019#include "clang/Basic/Version.h"
Douglas Gregor2973c0e2009-12-02 16:32:41 +000020#include "clang/Frontend/FrontendDiagnostic.h"
Fariborz Jahanian7d957472010-01-13 18:51:17 +000021#include "clang/Frontend/FrontendOptions.h"
Chandler Carruthcb381ea2011-12-09 01:33:57 +000022#include "clang/Lex/HeaderSearch.h"
Chris Lattnere116ccf2009-04-21 05:40:52 +000023#include "clang/Lex/Preprocessor.h"
Douglas Gregor14e71f02012-10-24 17:01:35 +000024#include "clang/Lex/PreprocessorOptions.h"
Douglas Gregor4ec429d2012-10-22 23:59:45 +000025#include "clang/Serialization/ASTReader.h"
Benjamin Kramera3d8ced2010-01-09 16:17:37 +000026#include "llvm/ADT/APFloat.h"
Michael J. Spencerfbfd1802010-12-21 16:45:57 +000027#include "llvm/Support/FileSystem.h"
Douglas Gregor2973c0e2009-12-02 16:32:41 +000028#include "llvm/Support/MemoryBuffer.h"
Michael J. Spencer03013fa2010-11-29 18:12:39 +000029#include "llvm/Support/Path.h"
Chris Lattner47c06ee2009-11-02 21:48:09 +000030using namespace clang;
Chris Lattnere116ccf2009-04-21 05:40:52 +000031
Eli Friedman62c90e12013-08-28 20:35:38 +000032static bool MacroBodyEndsInBackslash(StringRef MacroBody) {
33 while (!MacroBody.empty() && isWhitespace(MacroBody.back()))
34 MacroBody = MacroBody.drop_back();
35 return !MacroBody.empty() && MacroBody.back() == '\\';
36}
37
Chris Lattnere116ccf2009-04-21 05:40:52 +000038// 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=".
Chris Lattner5f9e2722011-07-23 10:55:15 +000041static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro,
David Blaikied6471f72011-09-25 23:23:43 +000042 DiagnosticsEngine &Diags) {
Chris Lattner5f9e2722011-07-23 10:55:15 +000043 std::pair<StringRef, StringRef> MacroPair = Macro.split('=');
44 StringRef MacroName = MacroPair.first;
45 StringRef MacroBody = MacroPair.second;
Daniel Dunbar1ee4b9e2010-01-10 00:46:21 +000046 if (MacroName.size() != Macro.size()) {
Chris Lattnere116ccf2009-04-21 05:40:52 +000047 // Per GCC -D semantics, the macro ends at \n if it exists.
Chris Lattner5f9e2722011-07-23 10:55:15 +000048 StringRef::size_type End = MacroBody.find_first_of("\n\r");
49 if (End != StringRef::npos)
Daniel Dunbar1ee4b9e2010-01-10 00:46:21 +000050 Diags.Report(diag::warn_fe_macro_contains_embedded_newline)
Kovarththanan Rajaratnam8746e4e2010-01-09 09:27:11 +000051 << MacroName;
Eli Friedman62c90e12013-08-28 20:35:38 +000052 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);
Chris Lattnere116ccf2009-04-21 05:40:52 +000060 } else {
61 // Push "macroname 1".
Benjamin Kramerb1b5b902010-01-09 17:43:21 +000062 Builder.defineMacro(Macro);
Chris Lattnere116ccf2009-04-21 05:40:52 +000063 }
Chris Lattnerdcdecf42009-05-15 16:08:43 +000064}
65
James Dennett809d1be2012-06-13 22:07:09 +000066/// AddImplicitInclude - Add an implicit \#include of the specified file to the
Chris Lattnere116ccf2009-04-21 05:40:52 +000067/// predefines buffer.
Stephen Hines176edba2014-12-01 14:53:08 -080068/// 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 + "\"");
Chris Lattnere116ccf2009-04-21 05:40:52 +000072}
73
Stephen Hines176edba2014-12-01 14:53:08 -080074static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) {
75 Builder.append(Twine("#__include_macros \"") + File + "\"");
Chris Lattnere116ccf2009-04-21 05:40:52 +000076 // Marker token to stop the __include_macros fetch loop.
Benjamin Kramerb1b5b902010-01-09 17:43:21 +000077 Builder.append("##"); // ##?
Chris Lattnere116ccf2009-04-21 05:40:52 +000078}
79
James Dennett809d1be2012-06-13 22:07:09 +000080/// AddImplicitIncludePTH - Add an implicit \#include using the original file
81/// used to generate a PTH cache.
Benjamin Kramera3d8ced2010-01-09 16:17:37 +000082static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP,
Chris Lattner5f9e2722011-07-23 10:55:15 +000083 StringRef ImplicitIncludePTH) {
Chris Lattnere116ccf2009-04-21 05:40:52 +000084 PTHManager *P = PP.getPTHManager();
Ted Kremenek4ae4c912010-06-28 20:32:40 +000085 // Null check 'P' in the corner case where it couldn't be created.
Stephen Hines6bcf27b2014-05-29 04:14:42 -070086 const char *OriginalFile = P ? P->getOriginalSourceFile() : nullptr;
Mike Stump1eb44332009-09-09 15:08:12 +000087
Chris Lattnere116ccf2009-04-21 05:40:52 +000088 if (!OriginalFile) {
Daniel Dunbarbaac1032009-12-03 09:14:12 +000089 PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header)
90 << ImplicitIncludePTH;
91 return;
Chris Lattnere116ccf2009-04-21 05:40:52 +000092 }
Mike Stump1eb44332009-09-09 15:08:12 +000093
Stephen Hines176edba2014-12-01 14:53:08 -080094 AddImplicitInclude(Builder, OriginalFile);
Chris Lattnere116ccf2009-04-21 05:40:52 +000095}
96
Douglas Gregor4ec429d2012-10-22 23:59:45 +000097/// \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
Stephen Hines176edba2014-12-01 14:53:08 -0800107 AddImplicitInclude(Builder, OriginalFile);
Douglas Gregor4ec429d2012-10-22 23:59:45 +0000108}
109
Chris Lattnere116ccf2009-04-21 05:40:52 +0000110/// 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,
Eli Friedman2665a752009-05-23 03:50:01 +0000114 T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
115 T IEEEQuadVal) {
Duncan Sands63682f92009-06-03 14:28:20 +0000116 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle)
Chris Lattnere116ccf2009-04-21 05:40:52 +0000117 return IEEESingleVal;
Duncan Sands63682f92009-06-03 14:28:20 +0000118 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble)
Chris Lattnere116ccf2009-04-21 05:40:52 +0000119 return IEEEDoubleVal;
Duncan Sands63682f92009-06-03 14:28:20 +0000120 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended)
Chris Lattnere116ccf2009-04-21 05:40:52 +0000121 return X87DoubleExtendedVal;
Duncan Sands63682f92009-06-03 14:28:20 +0000122 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble)
Eli Friedman2665a752009-05-23 03:50:01 +0000123 return PPCDoubleDoubleVal;
Duncan Sands63682f92009-06-03 14:28:20 +0000124 assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad);
Eli Friedman2665a752009-05-23 03:50:01 +0000125 return IEEEQuadVal;
Chris Lattnere116ccf2009-04-21 05:40:52 +0000126}
127
Chris Lattner5f9e2722011-07-23 10:55:15 +0000128static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
Eli Friedman75e8efe2012-11-10 00:20:38 +0000129 const llvm::fltSemantics *Sem, StringRef Ext) {
Chris Lattnere116ccf2009-04-21 05:40:52 +0000130 const char *DenormMin, *Epsilon, *Max, *Min;
Eli Friedman75e8efe2012-11-10 00:20:38 +0000131 DenormMin = PickFP(Sem, "1.40129846e-45", "4.9406564584124654e-324",
132 "3.64519953188247460253e-4951",
133 "4.94065645841246544176568792868221e-324",
134 "6.47517511943802511092443895822764655e-4966");
Eli Friedman2665a752009-05-23 03:50:01 +0000135 int Digits = PickFP(Sem, 6, 15, 18, 31, 33);
Eli Friedman75e8efe2012-11-10 00:20:38 +0000136 Epsilon = PickFP(Sem, "1.19209290e-7", "2.2204460492503131e-16",
137 "1.08420217248550443401e-19",
138 "4.94065645841246544176568792868221e-324",
139 "1.92592994438723585305597794258492732e-34");
Eli Friedman2665a752009-05-23 03:50:01 +0000140 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);
Eli Friedman75e8efe2012-11-10 00:20:38 +0000145 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");
Mike Stump1eb44332009-09-09 15:08:12 +0000153
Dylan Noblesmithf7ccbad2012-02-05 02:13:05 +0000154 SmallString<32> DefPrefix;
Daniel Dunbar066515f2010-01-20 06:09:53 +0000155 DefPrefix = "__";
156 DefPrefix += Prefix;
157 DefPrefix += "_";
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000158
Eli Friedman75e8efe2012-11-10 00:20:38 +0000159 Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext);
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000160 Builder.defineMacro(DefPrefix + "HAS_DENORM__");
Chris Lattner5f9e2722011-07-23 10:55:15 +0000161 Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits));
Eli Friedman75e8efe2012-11-10 00:20:38 +0000162 Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext);
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000163 Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
164 Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
Chris Lattner5f9e2722011-07-23 10:55:15 +0000165 Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits));
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000166
Chris Lattner5f9e2722011-07-23 10:55:15 +0000167 Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp));
168 Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp));
Eli Friedman75e8efe2012-11-10 00:20:38 +0000169 Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext);
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000170
Chris Lattner5f9e2722011-07-23 10:55:15 +0000171 Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")");
172 Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")");
Eli Friedman75e8efe2012-11-10 00:20:38 +0000173 Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000174}
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).
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700180static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000181 StringRef ValSuffix, bool isSigned,
Chris Lattnerd7f758c2011-02-24 06:54:56 +0000182 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);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000186}
187
Chris Lattner9099e7b2009-11-05 21:21:32 +0000188/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
189/// the width, suffix, and signedness of the given type
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700190static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty,
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000191 const TargetInfo &TI, MacroBuilder &Builder) {
Chris Lattner9099e7b2009-11-05 21:21:32 +0000192 DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000193 TI.isTypeSigned(Ty), Builder);
Chris Lattner9099e7b2009-11-05 21:21:32 +0000194}
195
Stephen Hines176edba2014-12-01 14:53:08 -0800196static 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
Chris Lattner5f9e2722011-07-23 10:55:15 +0000206static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000207 MacroBuilder &Builder) {
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000208 Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
Chris Lattnere116ccf2009-04-21 05:40:52 +0000209}
210
Chris Lattner5f9e2722011-07-23 10:55:15 +0000211static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty,
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000212 const TargetInfo &TI, MacroBuilder &Builder) {
Chris Lattner5f9e2722011-07-23 10:55:15 +0000213 Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty)));
Ken Dyck186696b2009-11-18 13:52:57 +0000214}
215
Chris Lattner5f9e2722011-07-23 10:55:15 +0000216static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth,
Dan Gohmancfeac342010-05-28 00:27:15 +0000217 const TargetInfo &TI, MacroBuilder &Builder) {
218 Builder.defineMacro(MacroName,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000219 Twine(BitWidth / TI.getCharWidth()));
Dan Gohmancfeac342010-05-28 00:27:15 +0000220}
221
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700222static void DefineExactWidthIntType(TargetInfo::IntType Ty,
223 const TargetInfo &TI,
224 MacroBuilder &Builder) {
Ken Dyckeef22ef2009-11-16 16:36:33 +0000225 int TypeWidth = TI.getTypeWidth(Ty);
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700226 bool IsSigned = TI.isTypeSigned(Ty);
Daniel Dunbar7f3a5452010-06-30 06:30:56 +0000227
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)
Stephen Hines176edba2014-12-01 14:53:08 -0800231 Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
Daniel Dunbar7f3a5452010-06-30 06:30:56 +0000232
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700233 const char *Prefix = IsSigned ? "__INT" : "__UINT";
234
235 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
Stephen Hines176edba2014-12-01 14:53:08 -0800236 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
Ken Dyckeef22ef2009-11-16 16:36:33 +0000237
Stephen Hines176edba2014-12-01 14:53:08 -0800238 StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty));
239 Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
Chris Lattnerdcdd2a02009-11-12 08:08:27 +0000240}
Chris Lattnere116ccf2009-04-21 05:40:52 +0000241
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700242static 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)
Stephen Hines176edba2014-12-01 14:53:08 -0800251 Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700252
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);
Stephen Hines176edba2014-12-01 14:53:08 -0800267 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700268}
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);
Stephen Hines176edba2014-12-01 14:53:08 -0800281
282 DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700283}
284
285
Richard Smith2c39d712012-04-13 00:45:38 +0000286/// 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
John McCallf85e1932011-06-15 23:02:42 +0000300/// \brief Add definitions required for a smooth interaction between
John McCallf85e1932011-06-15 23:02:42 +0000301/// 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"
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000325 << "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n"
John McCallf85e1932011-06-15 23:02:42 +0000326 << " enum { __value = 0 };\n"
327 << " typedef __false_type __type;\n"
328 << "};\n"
329 << "\n";
330
John McCall0a7dd782012-08-21 02:47:43 +0000331 if (LangOpts.ObjCARCWeak) {
John McCallf85e1932011-06-15 23:02:42 +0000332 Out << "template<typename _Tp>\n"
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000333 << "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n"
John McCallf85e1932011-06-15 23:02:42 +0000334 << " enum { __value = 0 };\n"
335 << " typedef __false_type __type;\n"
336 << "};\n"
337 << "\n";
338 }
339
340 Out << "template<typename _Tp>\n"
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000341 << "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))"
John McCallf85e1932011-06-15 23:02:42 +0000342 << " _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
Nick Lewyckya9c64412011-06-07 06:07:12 +0000353static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
354 const LangOptions &LangOpts,
355 const FrontendOptions &FEOpts,
356 MacroBuilder &Builder) {
Stephen Hines651f13c2014-04-23 16:59:28 -0700357 if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP)
Nick Lewyckya9c64412011-06-07 06:07:12 +0000358 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) {
Benjamin Kramerffbe9b92011-12-23 17:00:35 +0000365 if (LangOpts.C11)
Benjamin Kramer430cf512011-12-23 17:00:41 +0000366 Builder.defineMacro("__STDC_VERSION__", "201112L");
Douglas Gregor5aa6dea2011-10-28 23:02:54 +0000367 else if (LangOpts.C99)
Nick Lewyckya9c64412011-06-07 06:07:12 +0000368 Builder.defineMacro("__STDC_VERSION__", "199901L");
369 else if (!LangOpts.GNUMode && LangOpts.Digraphs)
370 Builder.defineMacro("__STDC_VERSION__", "199409L");
371 } else {
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700372 // FIXME: Use correct value for C++17.
373 if (LangOpts.CPlusPlus1z)
374 Builder.defineMacro("__cplusplus", "201406L");
Stephen Hines651f13c2014-04-23 16:59:28 -0700375 // C++1y [cpp.predefined]p1:
376 // The name __cplusplus is defined to the value 201402L when compiling a
377 // C++ translation unit.
Stephen Hines176edba2014-12-01 14:53:08 -0800378 else if (LangOpts.CPlusPlus14)
Stephen Hines651f13c2014-04-23 16:59:28 -0700379 Builder.defineMacro("__cplusplus", "201402L");
Richard Smith05134482012-05-03 22:18:20 +0000380 // C++11 [cpp.predefined]p1:
381 // The name __cplusplus is defined to the value 201103L when compiling a
382 // C++ translation unit.
Richard Smith7f0ffb32013-05-07 19:32:56 +0000383 else if (LangOpts.CPlusPlus11)
Richard Smith05134482012-05-03 22:18:20 +0000384 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");
Nick Lewyckya9c64412011-06-07 06:07:12 +0000390 }
391
Ed Schouten5ada7a52013-09-29 07:54:52 +0000392 // 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
Nick Lewycky14648092011-06-10 20:56:43 +0000400 if (LangOpts.ObjC1)
401 Builder.defineMacro("__OBJC__");
402
Nick Lewyckya9c64412011-06-07 06:07:12 +0000403 // Not "standard" per se, but available even with the -undef flag.
404 if (LangOpts.AsmPreprocessor)
405 Builder.defineMacro("__ASSEMBLER__");
406}
407
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000408/// 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) {
Stephen Hines176edba2014-12-01 14:53:08 -0800412 // C++98 features.
413 if (LangOpts.RTTI)
414 Builder.defineMacro("__cpp_rtti", "199711");
415 if (LangOpts.CXXExceptions)
416 Builder.defineMacro("__cpp_exceptions", "199711");
417
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000418 // 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",
Stephen Hines176edba2014-12-01 14:53:08 -0800426 LangOpts.CPlusPlus14 ? "201304" : "200704");
427 Builder.defineMacro("__cpp_range_based_for", "200907");
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000428 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");
Stephen Hines176edba2014-12-01 14:53:08 -0800433 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");
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000439 }
440
441 // C++14 features.
Stephen Hines176edba2014-12-01 14:53:08 -0800442 if (LangOpts.CPlusPlus14) {
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000443 Builder.defineMacro("__cpp_binary_literals", "201304");
Stephen Hines176edba2014-12-01 14:53:08 -0800444 Builder.defineMacro("__cpp_digit_separators", "201309");
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000445 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 }
Stephen Hines176edba2014-12-01 14:53:08 -0800452 if (LangOpts.SizedDeallocation)
453 Builder.defineMacro("__cpp_sized_deallocation", "201309");
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000454}
455
Chris Lattnere116ccf2009-04-21 05:40:52 +0000456static void InitializePredefinedMacros(const TargetInfo &TI,
457 const LangOptions &LangOpts,
Fariborz Jahanian7d957472010-01-13 18:51:17 +0000458 const FrontendOptions &FEOpts,
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000459 MacroBuilder &Builder) {
Chris Lattnere116ccf2009-04-21 05:40:52 +0000460 // Compiler version introspection macros.
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000461 Builder.defineMacro("__llvm__"); // LLVM Backend
462 Builder.defineMacro("__clang__"); // Clang Frontend
Douglas Gregor4290fbd2010-04-30 02:51:06 +0000463#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__",
Benjamin Kramerd7ee1942012-10-08 18:49:39 +0000473 "\"" CLANG_VERSION_STRING " "
474 + getClangFullRepositoryVersion() + "\"");
Douglas Gregor4290fbd2010-04-30 02:51:06 +0000475#undef TOSTR
476#undef TOSTR2
Stephen Hines651f13c2014-04-23 16:59:28 -0700477 if (!LangOpts.MSVCCompat) {
Aaron Ballman5b31d552012-03-10 22:21:14 +0000478 // 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 }
Daniel Dunbarad1a4c62011-03-31 00:53:51 +0000485
David Chisnall7a7ee302012-01-16 17:27:18 +0000486 // 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
David Chisnall5f3c1632012-02-18 16:12:34 +0000494 // Support for #pragma redefine_extname (Sun compatibility)
495 Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1");
496
Daniel Dunbarad1a4c62011-03-31 00:53:51 +0000497 // 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 " +
Chris Lattner5f9e2722011-07-23 10:55:15 +0000501 Twine(getClangFullCPPVersion()) + "\"");
Mike Stump1eb44332009-09-09 15:08:12 +0000502
Chris Lattnere116ccf2009-04-21 05:40:52 +0000503 // Initialize language-specific preprocessor defines.
Mike Stump1eb44332009-09-09 15:08:12 +0000504
Chris Lattnere116ccf2009-04-21 05:40:52 +0000505 // Standard conforming mode?
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700506 if (!LangOpts.GNUMode && !LangOpts.MSVCCompat)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000507 Builder.defineMacro("__STRICT_ANSI__");
Mike Stump1eb44332009-09-09 15:08:12 +0000508
Stephen Hines176edba2014-12-01 14:53:08 -0800509 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus11)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000510 Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000511
Chris Lattnere116ccf2009-04-21 05:40:52 +0000512 if (LangOpts.ObjC1) {
John McCall260611a2012-06-20 06:18:46 +0000513 if (LangOpts.ObjCRuntime.isNonFragile()) {
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000514 Builder.defineMacro("__OBJC2__");
Douglas Gregoreced60c2011-09-12 15:17:19 +0000515
516 if (LangOpts.ObjCExceptions)
517 Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000518 }
519
Douglas Gregore289d812011-09-13 17:21:33 +0000520 if (LangOpts.getGC() != LangOptions::NonGC)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000521 Builder.defineMacro("__OBJC_GC__");
Mike Stump1eb44332009-09-09 15:08:12 +0000522
John McCall260611a2012-06-20 06:18:46 +0000523 if (LangOpts.ObjCRuntime.isNeXTFamily())
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000524 Builder.defineMacro("__NEXT_RUNTIME__");
Ted Kremenek3065cf92012-06-19 00:37:39 +0000525
Benjamin Kramer585c84c2013-09-16 16:31:49 +0000526 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
Ted Kremenek3065cf92012-06-19 00:37:39 +0000542 Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))");
543 Builder.defineMacro("IBOutletCollection(ClassName)",
544 "__attribute__((iboutletcollection(ClassName)))");
545 Builder.defineMacro("IBAction", "void)__attribute__((ibaction)");
Stephen Hines176edba2014-12-01 14:53:08 -0800546 Builder.defineMacro("IBInspectable", "");
547 Builder.defineMacro("IB_DESIGNABLE", "");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000548 }
Mike Stump1eb44332009-09-09 15:08:12 +0000549
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000550 if (LangOpts.CPlusPlus)
551 InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder);
552
Chris Lattnere116ccf2009-04-21 05:40:52 +0000553 // 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.
Fariborz Jahanian16c3eae2011-07-05 16:00:59 +0000555 if (!LangOpts.NoConstantCFStrings)
556 Builder.defineMacro("__CONSTANT_CFSTRINGS__");
Mike Stump1eb44332009-09-09 15:08:12 +0000557
Chris Lattnere116ccf2009-04-21 05:40:52 +0000558 if (LangOpts.ObjC2)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000559 Builder.defineMacro("OBJC_NEW_PROPERTIES");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000560
561 if (LangOpts.PascalStrings)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000562 Builder.defineMacro("__PASCAL_STRINGS__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000563
564 if (LangOpts.Blocks) {
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000565 Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
566 Builder.defineMacro("__BLOCKS__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000567 }
Mike Stump1eb44332009-09-09 15:08:12 +0000568
Stephen Hines176edba2014-12-01 14:53:08 -0800569 if (!LangOpts.MSVCCompat && LangOpts.Exceptions)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000570 Builder.defineMacro("__EXCEPTIONS");
Stephen Hines176edba2014-12-01 14:53:08 -0800571 if (!LangOpts.MSVCCompat && LangOpts.RTTI)
Dan Gohmancfeac342010-05-28 00:27:15 +0000572 Builder.defineMacro("__GXX_RTTI");
Daniel Dunbarb2987d12010-02-10 18:49:11 +0000573 if (LangOpts.SjLjExceptions)
574 Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
Rafael Espindolaf759df02009-10-01 13:33:33 +0000575
Chandler Carruthf8c247d2011-04-23 19:48:40 +0000576 if (LangOpts.Deprecated)
577 Builder.defineMacro("__DEPRECATED");
578
Stephen Hines176edba2014-12-01 14:53:08 -0800579 if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus) {
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000580 Builder.defineMacro("__GNUG__", "4");
581 Builder.defineMacro("__GXX_WEAK__");
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000582 Builder.defineMacro("__private_extern__", "extern");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000583 }
Mike Stump1eb44332009-09-09 15:08:12 +0000584
Francois Pichet62ec1f22011-09-17 17:15:52 +0000585 if (LangOpts.MicrosoftExt) {
Abramo Bagnara5b86ffd2012-09-05 17:30:57 +0000586 if (LangOpts.WChar) {
587 // wchar_t supported as a keyword.
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000588 Builder.defineMacro("_WCHAR_T_DEFINED");
589 Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
Abramo Bagnara5b86ffd2012-09-05 17:30:57 +0000590 }
Chris Lattnere116ccf2009-04-21 05:40:52 +0000591 }
Mike Stump1eb44332009-09-09 15:08:12 +0000592
Chris Lattnere116ccf2009-04-21 05:40:52 +0000593 if (LangOpts.Optimize)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000594 Builder.defineMacro("__OPTIMIZE__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000595 if (LangOpts.OptimizeSize)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000596 Builder.defineMacro("__OPTIMIZE_SIZE__");
Mike Stump1eb44332009-09-09 15:08:12 +0000597
Chandler Carruthba9186c2012-01-03 02:46:46 +0000598 if (LangOpts.FastMath)
599 Builder.defineMacro("__FAST_MATH__");
600
Chris Lattnere116ccf2009-04-21 05:40:52 +0000601 // Initialize target-specific preprocessor defines.
Mike Stump1eb44332009-09-09 15:08:12 +0000602
Dylan Noblesmith5aeda882012-08-08 16:09:12 +0000603 // __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.
Dylan Noblesmith3b198a92012-07-27 18:34:31 +0000606 // 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");
Stephen Hines651f13c2014-04-23 16:59:28 -0700611 if (TI.isBigEndian()) {
Dylan Noblesmith3b198a92012-07-27 18:34:31 +0000612 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__");
Stephen Hines651f13c2014-04-23 16:59:28 -0700613 Builder.defineMacro("__BIG_ENDIAN__");
614 } else {
Dylan Noblesmith3b198a92012-07-27 18:34:31 +0000615 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
Stephen Hines651f13c2014-04-23 16:59:28 -0700616 Builder.defineMacro("__LITTLE_ENDIAN__");
617 }
Dylan Noblesmith6bd32912012-08-10 19:12:37 +0000618
619 if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64
620 && TI.getIntWidth() == 32) {
621 Builder.defineMacro("_LP64");
622 Builder.defineMacro("__LP64__");
623 }
624
Stephen Hines176edba2014-12-01 14:53:08 -0800625 if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32
626 && TI.getIntWidth() == 32) {
627 Builder.defineMacro("_ILP32");
628 Builder.defineMacro("__ILP32__");
629 }
630
Chris Lattnere116ccf2009-04-21 05:40:52 +0000631 // Define type sizing macros based on the target properties.
632 assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000633 Builder.defineMacro("__CHAR_BIT__", "8");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000634
Stepan Dyatkovskiy7b7bef12013-09-05 11:23:21 +0000635 DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder);
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000636 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);
Evgeniy Stepanovedaf2812013-03-28 08:36:54 +0000642 DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000643
Stephen Hines176edba2014-12-01 14:53:08 -0800644 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);
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700648
Dan Gohmancfeac342010-05-28 00:27:15 +0000649 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);
Richard Smith84268902012-11-29 05:41:51 +0000665 if (TI.hasInt128Type())
666 DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
Dan Gohmancfeac342010-05-28 00:27:15 +0000667
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000668 DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
Stephen Hines176edba2014-12-01 14:53:08 -0800669 DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder);
670 Builder.defineMacro("__INTMAX_C_SUFFIX__",
671 TI.getTypeConstantSuffix(TI.getIntMaxType()));
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000672 DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
Stephen Hines176edba2014-12-01 14:53:08 -0800673 DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder);
674 Builder.defineMacro("__UINTMAX_C_SUFFIX__",
675 TI.getTypeConstantSuffix(TI.getUIntMaxType()));
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000676 DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
677 DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
Stephen Hines176edba2014-12-01 14:53:08 -0800678 DefineFmt("__PTRDIFF", TI.getPtrDiffType(0), TI, Builder);
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000679 DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
680 DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
Stephen Hines176edba2014-12-01 14:53:08 -0800681 DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder);
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000682 DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
683 DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
Stephen Hines176edba2014-12-01 14:53:08 -0800684 DefineFmt("__SIZE", TI.getSizeType(), TI, Builder);
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000685 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);
Stephen Hines176edba2014-12-01 14:53:08 -0800691 DefineTypeSize("__SIG_ATOMIC_MAX__", TI.getSigAtomicType(), TI, Builder);
Dan Gohmancfeac342010-05-28 00:27:15 +0000692 DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
693 DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
Mike Stump1eb44332009-09-09 15:08:12 +0000694
Stephen Hines176edba2014-12-01 14:53:08 -0800695 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);
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700699
Eli Friedman75e8efe2012-11-10 00:20:38 +0000700 DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
701 DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
702 DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000703
704 // Define a __POINTER_WIDTH__ macro for stdint.h.
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000705 Builder.defineMacro("__POINTER_WIDTH__",
Chris Lattner5f9e2722011-07-23 10:55:15 +0000706 Twine((int)TI.getPointerWidth(0)));
Mike Stump1eb44332009-09-09 15:08:12 +0000707
Eli Friedman15b91762009-06-05 07:05:05 +0000708 if (!LangOpts.CharIsSigned)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000709 Builder.defineMacro("__CHAR_UNSIGNED__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000710
James Molloya30d8602012-05-04 11:23:40 +0000711 if (!TargetInfo::isTypeSigned(TI.getWCharType()))
712 Builder.defineMacro("__WCHAR_UNSIGNED__");
713
Eli Friedman1cfeefd2011-04-21 05:45:45 +0000714 if (!TargetInfo::isTypeSigned(TI.getWIntType()))
715 Builder.defineMacro("__WINT_UNSIGNED__");
716
Chris Lattnerdcdd2a02009-11-12 08:08:27 +0000717 // Define exact-width integer types for stdint.h
Stephen Hines176edba2014-12-01 14:53:08 -0800718 DefineExactWidthIntType(TargetInfo::SignedChar, TI, Builder);
Mike Stump1eb44332009-09-09 15:08:12 +0000719
Chris Lattnerdcdd2a02009-11-12 08:08:27 +0000720 if (TI.getShortWidth() > TI.getCharWidth())
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000721 DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder);
Mike Stump1eb44332009-09-09 15:08:12 +0000722
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000723 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
Stephen Hines176edba2014-12-01 14:53:08 -0800732 DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder);
733 DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder);
734 DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder);
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700735
Stephen Hines176edba2014-12-01 14:53:08 -0800736 if (TI.getShortWidth() > TI.getCharWidth()) {
737 DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder);
738 DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder);
739 DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder);
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700740 }
741
Stephen Hines176edba2014-12-01 14:53:08 -0800742 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
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000778 if (const char *Prefix = TI.getUserLabelPrefix())
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000779 Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
Mike Stump1eb44332009-09-09 15:08:12 +0000780
Bob Wilson455e72e2012-07-19 03:52:53 +0000781 if (LangOpts.FastMath || LangOpts.FiniteMathOnly)
782 Builder.defineMacro("__FINITE_MATH_ONLY__", "1");
783 else
784 Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000785
Stephen Hines176edba2014-12-01 14:53:08 -0800786 if (!LangOpts.MSVCCompat) {
787 if (LangOpts.GNUInline)
788 Builder.defineMacro("__GNUC_GNU_INLINE__");
789 else
790 Builder.defineMacro("__GNUC_STDC_INLINE__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000791
Stephen Hines176edba2014-12-01 14:53:08 -0800792 // The value written by __atomic_test_and_set.
793 // FIXME: This is target-dependent.
794 Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
Richard Smith2c39d712012-04-13 00:45:38 +0000795
Stephen Hines176edba2014-12-01 14:53:08 -0800796 // Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
797 unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
Richard Smith2c39d712012-04-13 00:45:38 +0000798#define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
Stephen Hines176edba2014-12-01 14:53:08 -0800799 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));
Richard Smith2c39d712012-04-13 00:45:38 +0000816#undef DEFINE_LOCK_FREE_MACRO
Stephen Hines176edba2014-12-01 14:53:08 -0800817 }
Richard Smith2c39d712012-04-13 00:45:38 +0000818
Daniel Dunbar7b140262012-03-09 15:39:08 +0000819 if (LangOpts.NoInlineDefine)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000820 Builder.defineMacro("__NO_INLINE__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000821
822 if (unsigned PICLevel = LangOpts.PICLevel) {
Chris Lattner5f9e2722011-07-23 10:55:15 +0000823 Builder.defineMacro("__PIC__", Twine(PICLevel));
824 Builder.defineMacro("__pic__", Twine(PICLevel));
Chris Lattnere116ccf2009-04-21 05:40:52 +0000825 }
Chandler Carruth5e219cf2012-04-08 16:40:35 +0000826 if (unsigned PIELevel = LangOpts.PIELevel) {
827 Builder.defineMacro("__PIE__", Twine(PIELevel));
828 Builder.defineMacro("__pie__", Twine(PIELevel));
829 }
Chris Lattnere116ccf2009-04-21 05:40:52 +0000830
831 // Macros to control C99 numerics and <float.h>
Benjamin Kramerb4066692011-12-28 15:47:06 +0000832 Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod()));
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000833 Builder.defineMacro("__FLT_RADIX__", "2");
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000834 int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36);
Chris Lattner5f9e2722011-07-23 10:55:15 +0000835 Builder.defineMacro("__DECIMAL_DIG__", Twine(Dig));
Bill Wendling45483f72009-06-28 07:36:13 +0000836
Douglas Gregore289d812011-09-13 17:21:33 +0000837 if (LangOpts.getStackProtector() == LangOptions::SSPOn)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000838 Builder.defineMacro("__SSP__");
Stephen Hines651f13c2014-04-23 16:59:28 -0700839 else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
840 Builder.defineMacro("__SSP_STRONG__", "2");
Douglas Gregore289d812011-09-13 17:21:33 +0000841 else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
Stephen Hines651f13c2014-04-23 16:59:28 -0700842 Builder.defineMacro("__SSP_ALL__", "3");
Bill Wendling45483f72009-06-28 07:36:13 +0000843
Fariborz Jahanian7d957472010-01-13 18:51:17 +0000844 if (FEOpts.ProgramAction == frontend::RewriteObjC)
845 Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
Ted Kremenekf0af7772010-05-26 21:36:54 +0000846
847 // Define a macro that exists only when using the static analyzer.
848 if (FEOpts.ProgramAction == frontend::RunAnalysis)
849 Builder.defineMacro("__clang_analyzer__");
850
Peter Collingbournef0840822010-12-04 01:51:23 +0000851 if (LangOpts.FastRelaxedMath)
852 Builder.defineMacro("__FAST_RELAXED_MATH__");
853
John McCall098df7f2011-06-16 00:03:19 +0000854 if (LangOpts.ObjCAutoRefCount) {
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000855 Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))");
856 Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))");
John McCall098df7f2011-06-16 00:03:19 +0000857 Builder.defineMacro("__autoreleasing",
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000858 "__attribute__((objc_ownership(autoreleasing)))");
John McCall098df7f2011-06-16 00:03:19 +0000859 Builder.defineMacro("__unsafe_unretained",
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000860 "__attribute__((objc_ownership(none)))");
John McCall098df7f2011-06-16 00:03:19 +0000861 }
862
Douglas Gregor50a70cd2013-01-15 06:45:29 +0000863 // OpenMP definition
864 if (LangOpts.OpenMP) {
Stephen Hines651f13c2014-04-23 16:59:28 -0700865 // OpenMP 2.2:
Douglas Gregor50a70cd2013-01-15 06:45:29 +0000866 // 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.
Stephen Hines651f13c2014-04-23 16:59:28 -0700870 Builder.defineMacro("_OPENMP", "201307");
Douglas Gregor50a70cd2013-01-15 06:45:29 +0000871 }
872
Chris Lattnere116ccf2009-04-21 05:40:52 +0000873 // Get other target #defines.
Benjamin Kramera9992772010-01-09 17:55:51 +0000874 TI.getTargetDefines(LangOpts, Builder);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000875}
876
877/// InitializePreprocessor - Initialize the preprocessor getting it and the
878/// environment ready to process a single file. This returns true on error.
879///
Daniel Dunbar938963f2009-11-04 21:13:15 +0000880void clang::InitializePreprocessor(Preprocessor &PP,
Daniel Dunbar961c76e2009-11-11 21:44:42 +0000881 const PreprocessorOptions &InitOpts,
Fariborz Jahanian7d957472010-01-13 18:51:17 +0000882 const FrontendOptions &FEOpts) {
David Blaikie4e4d0842012-03-11 07:00:24 +0000883 const LangOptions &LangOpts = PP.getLangOpts();
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000884 std::string PredefineBuffer;
885 PredefineBuffer.reserve(4080);
886 llvm::raw_string_ostream Predefines(PredefineBuffer);
887 MacroBuilder Builder(Predefines);
Mike Stump1eb44332009-09-09 15:08:12 +0000888
Chris Lattnerfcaa9e72010-04-26 22:08:10 +0000889 // Emit line markers for various builtin sections of the file. We don't do
890 // this in asm preprocessor mode, because "# 4" is not a line marker directive
891 // in this mode.
David Blaikie4e4d0842012-03-11 07:00:24 +0000892 if (!PP.getLangOpts().AsmPreprocessor)
Chris Lattnerfcaa9e72010-04-26 22:08:10 +0000893 Builder.append("# 1 \"<built-in>\" 3");
Mike Stump1eb44332009-09-09 15:08:12 +0000894
Chris Lattnere116ccf2009-04-21 05:40:52 +0000895 // Install things like __POWERPC__, __GNUC__, etc into the macro table.
John McCallf85e1932011-06-15 23:02:42 +0000896 if (InitOpts.UsePredefines) {
897 InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts, Builder);
Mike Stump1eb44332009-09-09 15:08:12 +0000898
John McCallf85e1932011-06-15 23:02:42 +0000899 // Install definitions to make Objective-C++ ARC work well with various
900 // C++ Standard Library implementations.
901 if (LangOpts.ObjC1 && LangOpts.CPlusPlus && LangOpts.ObjCAutoRefCount) {
902 switch (InitOpts.ObjCXXARCStandardLibrary) {
903 case ARCXX_nolib:
Douglas Gregored73b102011-09-27 22:48:19 +0000904 case ARCXX_libcxx:
John McCallf85e1932011-06-15 23:02:42 +0000905 break;
906
907 case ARCXX_libstdcxx:
908 AddObjCXXARCLibstdcxxDefines(LangOpts, Builder);
909 break;
910 }
911 }
912 }
913
Nick Lewyckya9c64412011-06-07 06:07:12 +0000914 // Even with predefines off, some macros are still predefined.
915 // These should all be defined in the preprocessor according to the
916 // current language configuration.
David Blaikie4e4d0842012-03-11 07:00:24 +0000917 InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(),
Nick Lewyckya9c64412011-06-07 06:07:12 +0000918 FEOpts, Builder);
919
Chris Lattnere116ccf2009-04-21 05:40:52 +0000920 // Add on the predefines from the driver. Wrap in a #line directive to report
921 // that they come from the command line.
David Blaikie4e4d0842012-03-11 07:00:24 +0000922 if (!PP.getLangOpts().AsmPreprocessor)
Chris Lattnerfcaa9e72010-04-26 22:08:10 +0000923 Builder.append("# 1 \"<command line>\" 1");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000924
925 // Process #define's and #undef's in the order they are given.
Daniel Dunbar049d3a02009-11-17 05:52:41 +0000926 for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
927 if (InitOpts.Macros[i].second) // isUndef
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000928 Builder.undefineMacro(InitOpts.Macros[i].first);
Chris Lattner62f86c42009-04-21 06:00:24 +0000929 else
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000930 DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
Daniel Dunbar1ee4b9e2010-01-10 00:46:21 +0000931 PP.getDiagnostics());
Chris Lattnere116ccf2009-04-21 05:40:52 +0000932 }
933
934 // If -imacros are specified, include them now. These are processed before
935 // any -include directives.
Daniel Dunbar049d3a02009-11-17 05:52:41 +0000936 for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
Stephen Hines176edba2014-12-01 14:53:08 -0800937 AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000938
Argyrios Kyrtzidis3ad86fd2013-02-05 16:36:52 +0000939 // Process -include-pch/-include-pth directives.
940 if (!InitOpts.ImplicitPCHInclude.empty())
941 AddImplicitIncludePCH(Builder, PP, InitOpts.ImplicitPCHInclude);
942 if (!InitOpts.ImplicitPTHInclude.empty())
943 AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude);
944
Chris Lattnere116ccf2009-04-21 05:40:52 +0000945 // Process -include directives.
Daniel Dunbar049d3a02009-11-17 05:52:41 +0000946 for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
947 const std::string &Path = InitOpts.Includes[i];
Stephen Hines176edba2014-12-01 14:53:08 -0800948 AddImplicitInclude(Builder, Path);
Eli Friedmanae96a962009-06-15 09:57:52 +0000949 }
Chris Lattnere116ccf2009-04-21 05:40:52 +0000950
Rafael Espindola0259d202009-12-01 18:28:16 +0000951 // Exit the command line and go back to <built-in> (2 is LC_LEAVE).
David Blaikie4e4d0842012-03-11 07:00:24 +0000952 if (!PP.getLangOpts().AsmPreprocessor)
Chris Lattnerfcaa9e72010-04-26 22:08:10 +0000953 Builder.append("# 1 \"<built-in>\" 2");
Rafael Espindola0259d202009-12-01 18:28:16 +0000954
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +0000955 // Instruct the preprocessor to skip the preamble.
956 PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first,
957 InitOpts.PrecompiledPreambleBytes.second);
958
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000959 // Copy PredefinedBuffer into the Preprocessor.
960 PP.setPredefines(Predefines.str());
Chris Lattnere116ccf2009-04-21 05:40:52 +0000961}