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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.
Chris Lattner5f9e2722011-07-23 10:55:15 +000068static void AddImplicitInclude(MacroBuilder &Builder, StringRef File,
Nick Lewycky277a6e72011-02-23 21:16:44 +000069 FileManager &FileMgr) {
Chandler Carruthcb381ea2011-12-09 01:33:57 +000070 Builder.append(Twine("#include \"") +
71 HeaderSearch::NormalizeDashIncludePath(File, FileMgr) + "\"");
Chris Lattnere116ccf2009-04-21 05:40:52 +000072}
73
Benjamin Kramera3d8ced2010-01-09 16:17:37 +000074static void AddImplicitIncludeMacros(MacroBuilder &Builder,
Chris Lattner5f9e2722011-07-23 10:55:15 +000075 StringRef File,
Nick Lewycky277a6e72011-02-23 21:16:44 +000076 FileManager &FileMgr) {
Chandler Carruthcb381ea2011-12-09 01:33:57 +000077 Builder.append(Twine("#__include_macros \"") +
78 HeaderSearch::NormalizeDashIncludePath(File, FileMgr) + "\"");
Chris Lattnere116ccf2009-04-21 05:40:52 +000079 // Marker token to stop the __include_macros fetch loop.
Benjamin Kramerb1b5b902010-01-09 17:43:21 +000080 Builder.append("##"); // ##?
Chris Lattnere116ccf2009-04-21 05:40:52 +000081}
82
James Dennett809d1be2012-06-13 22:07:09 +000083/// AddImplicitIncludePTH - Add an implicit \#include using the original file
84/// used to generate a PTH cache.
Benjamin Kramera3d8ced2010-01-09 16:17:37 +000085static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP,
Chris Lattner5f9e2722011-07-23 10:55:15 +000086 StringRef ImplicitIncludePTH) {
Chris Lattnere116ccf2009-04-21 05:40:52 +000087 PTHManager *P = PP.getPTHManager();
Ted Kremenek4ae4c912010-06-28 20:32:40 +000088 // Null check 'P' in the corner case where it couldn't be created.
Stephen Hines6bcf27b2014-05-29 04:14:42 -070089 const char *OriginalFile = P ? P->getOriginalSourceFile() : nullptr;
Mike Stump1eb44332009-09-09 15:08:12 +000090
Chris Lattnere116ccf2009-04-21 05:40:52 +000091 if (!OriginalFile) {
Daniel Dunbarbaac1032009-12-03 09:14:12 +000092 PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header)
93 << ImplicitIncludePTH;
94 return;
Chris Lattnere116ccf2009-04-21 05:40:52 +000095 }
Mike Stump1eb44332009-09-09 15:08:12 +000096
Nick Lewycky277a6e72011-02-23 21:16:44 +000097 AddImplicitInclude(Builder, OriginalFile, PP.getFileManager());
Chris Lattnere116ccf2009-04-21 05:40:52 +000098}
99
Douglas Gregor4ec429d2012-10-22 23:59:45 +0000100/// \brief Add an implicit \#include using the original file used to generate
101/// a PCH file.
102static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP,
103 StringRef ImplicitIncludePCH) {
104 std::string OriginalFile =
105 ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(),
106 PP.getDiagnostics());
107 if (OriginalFile.empty())
108 return;
109
110 AddImplicitInclude(Builder, OriginalFile, PP.getFileManager());
111}
112
Chris Lattnere116ccf2009-04-21 05:40:52 +0000113/// PickFP - This is used to pick a value based on the FP semantics of the
114/// specified FP model.
115template <typename T>
116static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal,
Eli Friedman2665a752009-05-23 03:50:01 +0000117 T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
118 T IEEEQuadVal) {
Duncan Sands63682f92009-06-03 14:28:20 +0000119 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle)
Chris Lattnere116ccf2009-04-21 05:40:52 +0000120 return IEEESingleVal;
Duncan Sands63682f92009-06-03 14:28:20 +0000121 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble)
Chris Lattnere116ccf2009-04-21 05:40:52 +0000122 return IEEEDoubleVal;
Duncan Sands63682f92009-06-03 14:28:20 +0000123 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended)
Chris Lattnere116ccf2009-04-21 05:40:52 +0000124 return X87DoubleExtendedVal;
Duncan Sands63682f92009-06-03 14:28:20 +0000125 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble)
Eli Friedman2665a752009-05-23 03:50:01 +0000126 return PPCDoubleDoubleVal;
Duncan Sands63682f92009-06-03 14:28:20 +0000127 assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad);
Eli Friedman2665a752009-05-23 03:50:01 +0000128 return IEEEQuadVal;
Chris Lattnere116ccf2009-04-21 05:40:52 +0000129}
130
Chris Lattner5f9e2722011-07-23 10:55:15 +0000131static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
Eli Friedman75e8efe2012-11-10 00:20:38 +0000132 const llvm::fltSemantics *Sem, StringRef Ext) {
Chris Lattnere116ccf2009-04-21 05:40:52 +0000133 const char *DenormMin, *Epsilon, *Max, *Min;
Eli Friedman75e8efe2012-11-10 00:20:38 +0000134 DenormMin = PickFP(Sem, "1.40129846e-45", "4.9406564584124654e-324",
135 "3.64519953188247460253e-4951",
136 "4.94065645841246544176568792868221e-324",
137 "6.47517511943802511092443895822764655e-4966");
Eli Friedman2665a752009-05-23 03:50:01 +0000138 int Digits = PickFP(Sem, 6, 15, 18, 31, 33);
Eli Friedman75e8efe2012-11-10 00:20:38 +0000139 Epsilon = PickFP(Sem, "1.19209290e-7", "2.2204460492503131e-16",
140 "1.08420217248550443401e-19",
141 "4.94065645841246544176568792868221e-324",
142 "1.92592994438723585305597794258492732e-34");
Eli Friedman2665a752009-05-23 03:50:01 +0000143 int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113);
144 int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931);
145 int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932);
146 int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381);
147 int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384);
Eli Friedman75e8efe2012-11-10 00:20:38 +0000148 Min = PickFP(Sem, "1.17549435e-38", "2.2250738585072014e-308",
149 "3.36210314311209350626e-4932",
150 "2.00416836000897277799610805135016e-292",
151 "3.36210314311209350626267781732175260e-4932");
152 Max = PickFP(Sem, "3.40282347e+38", "1.7976931348623157e+308",
153 "1.18973149535723176502e+4932",
154 "1.79769313486231580793728971405301e+308",
155 "1.18973149535723176508575932662800702e+4932");
Mike Stump1eb44332009-09-09 15:08:12 +0000156
Dylan Noblesmithf7ccbad2012-02-05 02:13:05 +0000157 SmallString<32> DefPrefix;
Daniel Dunbar066515f2010-01-20 06:09:53 +0000158 DefPrefix = "__";
159 DefPrefix += Prefix;
160 DefPrefix += "_";
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000161
Eli Friedman75e8efe2012-11-10 00:20:38 +0000162 Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext);
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000163 Builder.defineMacro(DefPrefix + "HAS_DENORM__");
Chris Lattner5f9e2722011-07-23 10:55:15 +0000164 Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits));
Eli Friedman75e8efe2012-11-10 00:20:38 +0000165 Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext);
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000166 Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
167 Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
Chris Lattner5f9e2722011-07-23 10:55:15 +0000168 Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits));
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000169
Chris Lattner5f9e2722011-07-23 10:55:15 +0000170 Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp));
171 Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp));
Eli Friedman75e8efe2012-11-10 00:20:38 +0000172 Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext);
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000173
Chris Lattner5f9e2722011-07-23 10:55:15 +0000174 Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")");
175 Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")");
Eli Friedman75e8efe2012-11-10 00:20:38 +0000176 Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000177}
178
179
180/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro
181/// named MacroName with the max value for a type with width 'TypeWidth' a
182/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL).
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700183static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000184 StringRef ValSuffix, bool isSigned,
Chris Lattnerd7f758c2011-02-24 06:54:56 +0000185 MacroBuilder &Builder) {
186 llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth)
187 : llvm::APInt::getMaxValue(TypeWidth);
188 Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000189}
190
Chris Lattner9099e7b2009-11-05 21:21:32 +0000191/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
192/// the width, suffix, and signedness of the given type
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700193static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty,
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000194 const TargetInfo &TI, MacroBuilder &Builder) {
Chris Lattner9099e7b2009-11-05 21:21:32 +0000195 DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000196 TI.isTypeSigned(Ty), Builder);
Chris Lattner9099e7b2009-11-05 21:21:32 +0000197}
198
Chris Lattner5f9e2722011-07-23 10:55:15 +0000199static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000200 MacroBuilder &Builder) {
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000201 Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
Chris Lattnere116ccf2009-04-21 05:40:52 +0000202}
203
Chris Lattner5f9e2722011-07-23 10:55:15 +0000204static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty,
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000205 const TargetInfo &TI, MacroBuilder &Builder) {
Chris Lattner5f9e2722011-07-23 10:55:15 +0000206 Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty)));
Ken Dyck186696b2009-11-18 13:52:57 +0000207}
208
Chris Lattner5f9e2722011-07-23 10:55:15 +0000209static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth,
Dan Gohmancfeac342010-05-28 00:27:15 +0000210 const TargetInfo &TI, MacroBuilder &Builder) {
211 Builder.defineMacro(MacroName,
Chris Lattner5f9e2722011-07-23 10:55:15 +0000212 Twine(BitWidth / TI.getCharWidth()));
Dan Gohmancfeac342010-05-28 00:27:15 +0000213}
214
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700215static void DefineExactWidthIntType(TargetInfo::IntType Ty,
216 const TargetInfo &TI,
217 MacroBuilder &Builder) {
Ken Dyckeef22ef2009-11-16 16:36:33 +0000218 int TypeWidth = TI.getTypeWidth(Ty);
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700219 bool IsSigned = TI.isTypeSigned(Ty);
Daniel Dunbar7f3a5452010-06-30 06:30:56 +0000220
221 // Use the target specified int64 type, when appropriate, so that [u]int64_t
222 // ends up being defined in terms of the correct type.
223 if (TypeWidth == 64)
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700224 Ty = IsSigned ? TI.getInt64Type() : TI.getIntTypeByWidth(64, false);
Daniel Dunbar7f3a5452010-06-30 06:30:56 +0000225
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700226 const char *Prefix = IsSigned ? "__INT" : "__UINT";
227
228 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
Ken Dyckeef22ef2009-11-16 16:36:33 +0000229
Chris Lattner5f9e2722011-07-23 10:55:15 +0000230 StringRef ConstSuffix(TargetInfo::getTypeConstantSuffix(Ty));
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000231 if (!ConstSuffix.empty())
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700232 Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
233
Chris Lattnerdcdd2a02009-11-12 08:08:27 +0000234}
Chris Lattnere116ccf2009-04-21 05:40:52 +0000235
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700236static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty,
237 const TargetInfo &TI,
238 MacroBuilder &Builder) {
239 int TypeWidth = TI.getTypeWidth(Ty);
240 bool IsSigned = TI.isTypeSigned(Ty);
241
242 // Use the target specified int64 type, when appropriate, so that [u]int64_t
243 // ends up being defined in terms of the correct type.
244 if (TypeWidth == 64)
245 Ty = IsSigned ? TI.getInt64Type() : TI.getIntTypeByWidth(64, false);
246
247 const char *Prefix = IsSigned ? "__INT" : "__UINT";
248 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
249}
250
251static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned,
252 const TargetInfo &TI,
253 MacroBuilder &Builder) {
254 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
255 if (Ty == TargetInfo::NoInt)
256 return;
257
258 const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST";
259 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
260 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
261}
262
263static void DefineFastIntType(unsigned TypeWidth, bool IsSigned,
264 const TargetInfo &TI, MacroBuilder &Builder) {
265 // stdint.h currently defines the fast int types as equivalent to the least
266 // types.
267 TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
268 if (Ty == TargetInfo::NoInt)
269 return;
270
271 const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST";
272 DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
273 DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
274}
275
276
Richard Smith2c39d712012-04-13 00:45:38 +0000277/// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with
278/// the specified properties.
279static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign,
280 unsigned InlineWidth) {
281 // Fully-aligned, power-of-2 sizes no larger than the inline
282 // width will be inlined as lock-free operations.
283 if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 &&
284 TypeWidth <= InlineWidth)
285 return "2"; // "always lock free"
286 // We cannot be certain what operations the lib calls might be
287 // able to implement as lock-free on future processors.
288 return "1"; // "sometimes lock free"
289}
290
John McCallf85e1932011-06-15 23:02:42 +0000291/// \brief Add definitions required for a smooth interaction between
John McCallf85e1932011-06-15 23:02:42 +0000292/// Objective-C++ automated reference counting and libstdc++ (4.2).
293static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts,
294 MacroBuilder &Builder) {
295 Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR");
296
297 std::string Result;
298 {
299 // Provide specializations for the __is_scalar type trait so that
300 // lifetime-qualified objects are not considered "scalar" types, which
301 // libstdc++ uses as an indicator of the presence of trivial copy, assign,
302 // default-construct, and destruct semantics (none of which hold for
303 // lifetime-qualified objects in ARC).
304 llvm::raw_string_ostream Out(Result);
305
306 Out << "namespace std {\n"
307 << "\n"
308 << "struct __true_type;\n"
309 << "struct __false_type;\n"
310 << "\n";
311
312 Out << "template<typename _Tp> struct __is_scalar;\n"
313 << "\n";
314
315 Out << "template<typename _Tp>\n"
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000316 << "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n"
John McCallf85e1932011-06-15 23:02:42 +0000317 << " enum { __value = 0 };\n"
318 << " typedef __false_type __type;\n"
319 << "};\n"
320 << "\n";
321
John McCall0a7dd782012-08-21 02:47:43 +0000322 if (LangOpts.ObjCARCWeak) {
John McCallf85e1932011-06-15 23:02:42 +0000323 Out << "template<typename _Tp>\n"
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000324 << "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n"
John McCallf85e1932011-06-15 23:02:42 +0000325 << " enum { __value = 0 };\n"
326 << " typedef __false_type __type;\n"
327 << "};\n"
328 << "\n";
329 }
330
331 Out << "template<typename _Tp>\n"
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000332 << "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))"
John McCallf85e1932011-06-15 23:02:42 +0000333 << " _Tp> {\n"
334 << " enum { __value = 0 };\n"
335 << " typedef __false_type __type;\n"
336 << "};\n"
337 << "\n";
338
339 Out << "}\n";
340 }
341 Builder.append(Result);
342}
343
Nick Lewyckya9c64412011-06-07 06:07:12 +0000344static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
345 const LangOptions &LangOpts,
346 const FrontendOptions &FEOpts,
347 MacroBuilder &Builder) {
Stephen Hines651f13c2014-04-23 16:59:28 -0700348 if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP)
Nick Lewyckya9c64412011-06-07 06:07:12 +0000349 Builder.defineMacro("__STDC__");
350 if (LangOpts.Freestanding)
351 Builder.defineMacro("__STDC_HOSTED__", "0");
352 else
353 Builder.defineMacro("__STDC_HOSTED__");
354
355 if (!LangOpts.CPlusPlus) {
Benjamin Kramerffbe9b92011-12-23 17:00:35 +0000356 if (LangOpts.C11)
Benjamin Kramer430cf512011-12-23 17:00:41 +0000357 Builder.defineMacro("__STDC_VERSION__", "201112L");
Douglas Gregor5aa6dea2011-10-28 23:02:54 +0000358 else if (LangOpts.C99)
Nick Lewyckya9c64412011-06-07 06:07:12 +0000359 Builder.defineMacro("__STDC_VERSION__", "199901L");
360 else if (!LangOpts.GNUMode && LangOpts.Digraphs)
361 Builder.defineMacro("__STDC_VERSION__", "199409L");
362 } else {
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700363 // FIXME: Use correct value for C++17.
364 if (LangOpts.CPlusPlus1z)
365 Builder.defineMacro("__cplusplus", "201406L");
Stephen Hines651f13c2014-04-23 16:59:28 -0700366 // C++1y [cpp.predefined]p1:
367 // The name __cplusplus is defined to the value 201402L when compiling a
368 // C++ translation unit.
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700369 else if (LangOpts.CPlusPlus1y)
Stephen Hines651f13c2014-04-23 16:59:28 -0700370 Builder.defineMacro("__cplusplus", "201402L");
Richard Smith05134482012-05-03 22:18:20 +0000371 // C++11 [cpp.predefined]p1:
372 // The name __cplusplus is defined to the value 201103L when compiling a
373 // C++ translation unit.
Richard Smith7f0ffb32013-05-07 19:32:56 +0000374 else if (LangOpts.CPlusPlus11)
Richard Smith05134482012-05-03 22:18:20 +0000375 Builder.defineMacro("__cplusplus", "201103L");
376 // C++03 [cpp.predefined]p1:
377 // The name __cplusplus is defined to the value 199711L when compiling a
378 // C++ translation unit.
379 else
380 Builder.defineMacro("__cplusplus", "199711L");
Nick Lewyckya9c64412011-06-07 06:07:12 +0000381 }
382
Ed Schouten5ada7a52013-09-29 07:54:52 +0000383 // In C11 these are environment macros. In C++11 they are only defined
384 // as part of <cuchar>. To prevent breakage when mixing C and C++
385 // code, define these macros unconditionally. We can define them
386 // unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit
387 // and 32-bit character literals.
388 Builder.defineMacro("__STDC_UTF_16__", "1");
389 Builder.defineMacro("__STDC_UTF_32__", "1");
390
Nick Lewycky14648092011-06-10 20:56:43 +0000391 if (LangOpts.ObjC1)
392 Builder.defineMacro("__OBJC__");
393
Nick Lewyckya9c64412011-06-07 06:07:12 +0000394 // Not "standard" per se, but available even with the -undef flag.
395 if (LangOpts.AsmPreprocessor)
396 Builder.defineMacro("__ASSEMBLER__");
397}
398
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000399/// Initialize the predefined C++ language feature test macros defined in
400/// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations".
401static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
402 MacroBuilder &Builder) {
403 // C++11 features.
404 if (LangOpts.CPlusPlus11) {
405 Builder.defineMacro("__cpp_unicode_characters", "200704");
406 Builder.defineMacro("__cpp_raw_strings", "200710");
407 Builder.defineMacro("__cpp_unicode_literals", "200710");
408 Builder.defineMacro("__cpp_user_defined_literals", "200809");
409 Builder.defineMacro("__cpp_lambdas", "200907");
410 Builder.defineMacro("__cpp_constexpr",
411 LangOpts.CPlusPlus1y ? "201304" : "200704");
412 Builder.defineMacro("__cpp_static_assert", "200410");
413 Builder.defineMacro("__cpp_decltype", "200707");
414 Builder.defineMacro("__cpp_attributes", "200809");
415 Builder.defineMacro("__cpp_rvalue_references", "200610");
416 Builder.defineMacro("__cpp_variadic_templates", "200704");
417 }
418
419 // C++14 features.
420 if (LangOpts.CPlusPlus1y) {
421 Builder.defineMacro("__cpp_binary_literals", "201304");
422 Builder.defineMacro("__cpp_init_captures", "201304");
423 Builder.defineMacro("__cpp_generic_lambdas", "201304");
424 Builder.defineMacro("__cpp_decltype_auto", "201304");
425 Builder.defineMacro("__cpp_return_type_deduction", "201304");
426 Builder.defineMacro("__cpp_aggregate_nsdmi", "201304");
427 Builder.defineMacro("__cpp_variable_templates", "201304");
428 }
429}
430
Chris Lattnere116ccf2009-04-21 05:40:52 +0000431static void InitializePredefinedMacros(const TargetInfo &TI,
432 const LangOptions &LangOpts,
Fariborz Jahanian7d957472010-01-13 18:51:17 +0000433 const FrontendOptions &FEOpts,
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000434 MacroBuilder &Builder) {
Chris Lattnere116ccf2009-04-21 05:40:52 +0000435 // Compiler version introspection macros.
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000436 Builder.defineMacro("__llvm__"); // LLVM Backend
437 Builder.defineMacro("__clang__"); // Clang Frontend
Douglas Gregor4290fbd2010-04-30 02:51:06 +0000438#define TOSTR2(X) #X
439#define TOSTR(X) TOSTR2(X)
440 Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR));
441 Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR));
442#ifdef CLANG_VERSION_PATCHLEVEL
443 Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL));
444#else
445 Builder.defineMacro("__clang_patchlevel__", "0");
446#endif
447 Builder.defineMacro("__clang_version__",
Benjamin Kramerd7ee1942012-10-08 18:49:39 +0000448 "\"" CLANG_VERSION_STRING " "
449 + getClangFullRepositoryVersion() + "\"");
Douglas Gregor4290fbd2010-04-30 02:51:06 +0000450#undef TOSTR
451#undef TOSTR2
Stephen Hines651f13c2014-04-23 16:59:28 -0700452 if (!LangOpts.MSVCCompat) {
Aaron Ballman5b31d552012-03-10 22:21:14 +0000453 // Currently claim to be compatible with GCC 4.2.1-5621, but only if we're
454 // not compiling for MSVC compatibility
455 Builder.defineMacro("__GNUC_MINOR__", "2");
456 Builder.defineMacro("__GNUC_PATCHLEVEL__", "1");
457 Builder.defineMacro("__GNUC__", "4");
458 Builder.defineMacro("__GXX_ABI_VERSION", "1002");
459 }
Daniel Dunbarad1a4c62011-03-31 00:53:51 +0000460
David Chisnall7a7ee302012-01-16 17:27:18 +0000461 // Define macros for the C11 / C++11 memory orderings
462 Builder.defineMacro("__ATOMIC_RELAXED", "0");
463 Builder.defineMacro("__ATOMIC_CONSUME", "1");
464 Builder.defineMacro("__ATOMIC_ACQUIRE", "2");
465 Builder.defineMacro("__ATOMIC_RELEASE", "3");
466 Builder.defineMacro("__ATOMIC_ACQ_REL", "4");
467 Builder.defineMacro("__ATOMIC_SEQ_CST", "5");
468
David Chisnall5f3c1632012-02-18 16:12:34 +0000469 // Support for #pragma redefine_extname (Sun compatibility)
470 Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1");
471
Daniel Dunbarad1a4c62011-03-31 00:53:51 +0000472 // As sad as it is, enough software depends on the __VERSION__ for version
473 // checks that it is necessary to report 4.2.1 (the base GCC version we claim
474 // compatibility with) first.
475 Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible " +
Chris Lattner5f9e2722011-07-23 10:55:15 +0000476 Twine(getClangFullCPPVersion()) + "\"");
Mike Stump1eb44332009-09-09 15:08:12 +0000477
Chris Lattnere116ccf2009-04-21 05:40:52 +0000478 // Initialize language-specific preprocessor defines.
Mike Stump1eb44332009-09-09 15:08:12 +0000479
Chris Lattnere116ccf2009-04-21 05:40:52 +0000480 // Standard conforming mode?
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700481 if (!LangOpts.GNUMode && !LangOpts.MSVCCompat)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000482 Builder.defineMacro("__STRICT_ANSI__");
Mike Stump1eb44332009-09-09 15:08:12 +0000483
Richard Smith80ad52f2013-01-02 11:42:31 +0000484 if (LangOpts.CPlusPlus11)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000485 Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000486
Chris Lattnere116ccf2009-04-21 05:40:52 +0000487 if (LangOpts.ObjC1) {
John McCall260611a2012-06-20 06:18:46 +0000488 if (LangOpts.ObjCRuntime.isNonFragile()) {
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000489 Builder.defineMacro("__OBJC2__");
Douglas Gregoreced60c2011-09-12 15:17:19 +0000490
491 if (LangOpts.ObjCExceptions)
492 Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000493 }
494
Douglas Gregore289d812011-09-13 17:21:33 +0000495 if (LangOpts.getGC() != LangOptions::NonGC)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000496 Builder.defineMacro("__OBJC_GC__");
Mike Stump1eb44332009-09-09 15:08:12 +0000497
John McCall260611a2012-06-20 06:18:46 +0000498 if (LangOpts.ObjCRuntime.isNeXTFamily())
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000499 Builder.defineMacro("__NEXT_RUNTIME__");
Ted Kremenek3065cf92012-06-19 00:37:39 +0000500
Benjamin Kramer585c84c2013-09-16 16:31:49 +0000501 if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) {
502 VersionTuple tuple = LangOpts.ObjCRuntime.getVersion();
503
504 unsigned minor = 0;
505 if (tuple.getMinor().hasValue())
506 minor = tuple.getMinor().getValue();
507
508 unsigned subminor = 0;
509 if (tuple.getSubminor().hasValue())
510 subminor = tuple.getSubminor().getValue();
511
512 Builder.defineMacro("__OBJFW_RUNTIME_ABI__",
513 Twine(tuple.getMajor() * 10000 + minor * 100 +
514 subminor));
515 }
516
Ted Kremenek3065cf92012-06-19 00:37:39 +0000517 Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))");
518 Builder.defineMacro("IBOutletCollection(ClassName)",
519 "__attribute__((iboutletcollection(ClassName)))");
520 Builder.defineMacro("IBAction", "void)__attribute__((ibaction)");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000521 }
Mike Stump1eb44332009-09-09 15:08:12 +0000522
Bill Wendlingc78e5b32013-11-28 00:33:42 +0000523 if (LangOpts.CPlusPlus)
524 InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder);
525
Chris Lattnere116ccf2009-04-21 05:40:52 +0000526 // darwin_constant_cfstrings controls this. This is also dependent
527 // on other things like the runtime I believe. This is set even for C code.
Fariborz Jahanian16c3eae2011-07-05 16:00:59 +0000528 if (!LangOpts.NoConstantCFStrings)
529 Builder.defineMacro("__CONSTANT_CFSTRINGS__");
Mike Stump1eb44332009-09-09 15:08:12 +0000530
Chris Lattnere116ccf2009-04-21 05:40:52 +0000531 if (LangOpts.ObjC2)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000532 Builder.defineMacro("OBJC_NEW_PROPERTIES");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000533
534 if (LangOpts.PascalStrings)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000535 Builder.defineMacro("__PASCAL_STRINGS__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000536
537 if (LangOpts.Blocks) {
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000538 Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
539 Builder.defineMacro("__BLOCKS__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000540 }
Mike Stump1eb44332009-09-09 15:08:12 +0000541
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700542 if (!LangOpts.MSVCCompat && LangOpts.CXXExceptions)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000543 Builder.defineMacro("__EXCEPTIONS");
Dan Gohmancfeac342010-05-28 00:27:15 +0000544 if (LangOpts.RTTI)
545 Builder.defineMacro("__GXX_RTTI");
Daniel Dunbarb2987d12010-02-10 18:49:11 +0000546 if (LangOpts.SjLjExceptions)
547 Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
Rafael Espindolaf759df02009-10-01 13:33:33 +0000548
Chandler Carruthf8c247d2011-04-23 19:48:40 +0000549 if (LangOpts.Deprecated)
550 Builder.defineMacro("__DEPRECATED");
551
Chris Lattnere116ccf2009-04-21 05:40:52 +0000552 if (LangOpts.CPlusPlus) {
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000553 Builder.defineMacro("__GNUG__", "4");
554 Builder.defineMacro("__GXX_WEAK__");
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000555 Builder.defineMacro("__private_extern__", "extern");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000556 }
Mike Stump1eb44332009-09-09 15:08:12 +0000557
Francois Pichet62ec1f22011-09-17 17:15:52 +0000558 if (LangOpts.MicrosoftExt) {
Abramo Bagnara5b86ffd2012-09-05 17:30:57 +0000559 if (LangOpts.WChar) {
560 // wchar_t supported as a keyword.
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000561 Builder.defineMacro("_WCHAR_T_DEFINED");
562 Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
Abramo Bagnara5b86ffd2012-09-05 17:30:57 +0000563 }
Chris Lattnere116ccf2009-04-21 05:40:52 +0000564 }
Mike Stump1eb44332009-09-09 15:08:12 +0000565
Chris Lattnere116ccf2009-04-21 05:40:52 +0000566 if (LangOpts.Optimize)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000567 Builder.defineMacro("__OPTIMIZE__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000568 if (LangOpts.OptimizeSize)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000569 Builder.defineMacro("__OPTIMIZE_SIZE__");
Mike Stump1eb44332009-09-09 15:08:12 +0000570
Chandler Carruthba9186c2012-01-03 02:46:46 +0000571 if (LangOpts.FastMath)
572 Builder.defineMacro("__FAST_MATH__");
573
Chris Lattnere116ccf2009-04-21 05:40:52 +0000574 // Initialize target-specific preprocessor defines.
Mike Stump1eb44332009-09-09 15:08:12 +0000575
Dylan Noblesmith5aeda882012-08-08 16:09:12 +0000576 // __BYTE_ORDER__ was added in GCC 4.6. It's analogous
577 // to the macro __BYTE_ORDER (no trailing underscores)
578 // from glibc's <endian.h> header.
Dylan Noblesmith3b198a92012-07-27 18:34:31 +0000579 // We don't support the PDP-11 as a target, but include
580 // the define so it can still be compared against.
581 Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234");
582 Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321");
583 Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412");
Stephen Hines651f13c2014-04-23 16:59:28 -0700584 if (TI.isBigEndian()) {
Dylan Noblesmith3b198a92012-07-27 18:34:31 +0000585 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__");
Stephen Hines651f13c2014-04-23 16:59:28 -0700586 Builder.defineMacro("__BIG_ENDIAN__");
587 } else {
Dylan Noblesmith3b198a92012-07-27 18:34:31 +0000588 Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
Stephen Hines651f13c2014-04-23 16:59:28 -0700589 Builder.defineMacro("__LITTLE_ENDIAN__");
590 }
Dylan Noblesmith6bd32912012-08-10 19:12:37 +0000591
592 if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64
593 && TI.getIntWidth() == 32) {
594 Builder.defineMacro("_LP64");
595 Builder.defineMacro("__LP64__");
596 }
597
Chris Lattnere116ccf2009-04-21 05:40:52 +0000598 // Define type sizing macros based on the target properties.
599 assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000600 Builder.defineMacro("__CHAR_BIT__", "8");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000601
Stepan Dyatkovskiy7b7bef12013-09-05 11:23:21 +0000602 DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder);
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000603 DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
604 DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder);
605 DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder);
606 DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder);
607 DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder);
608 DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder);
Evgeniy Stepanovedaf2812013-03-28 08:36:54 +0000609 DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000610
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700611 if (!LangOpts.MSVCCompat) {
612 DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder);
613 DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder);
614 DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder);
615 DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder);
616 }
617
Dan Gohmancfeac342010-05-28 00:27:15 +0000618 DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder);
619 DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder);
620 DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder);
621 DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder);
622 DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder);
623 DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder);
624 DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder);
625 DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder);
626 DefineTypeSizeof("__SIZEOF_PTRDIFF_T__",
627 TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder);
628 DefineTypeSizeof("__SIZEOF_SIZE_T__",
629 TI.getTypeWidth(TI.getSizeType()), TI, Builder);
630 DefineTypeSizeof("__SIZEOF_WCHAR_T__",
631 TI.getTypeWidth(TI.getWCharType()), TI, Builder);
632 DefineTypeSizeof("__SIZEOF_WINT_T__",
633 TI.getTypeWidth(TI.getWIntType()), TI, Builder);
Richard Smith84268902012-11-29 05:41:51 +0000634 if (TI.hasInt128Type())
635 DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
Dan Gohmancfeac342010-05-28 00:27:15 +0000636
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000637 DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
638 DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
639 DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
640 DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
641 DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
642 DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
643 DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
644 DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
645 DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder);
646 DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
647 DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder);
648 DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
649 DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder);
650 DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder);
Dan Gohmancfeac342010-05-28 00:27:15 +0000651 DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
652 DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
Mike Stump1eb44332009-09-09 15:08:12 +0000653
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700654 if (!LangOpts.MSVCCompat) {
655 DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder);
656 DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder);
657 DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder);
658 }
659
Eli Friedman75e8efe2012-11-10 00:20:38 +0000660 DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
661 DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
662 DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000663
664 // Define a __POINTER_WIDTH__ macro for stdint.h.
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000665 Builder.defineMacro("__POINTER_WIDTH__",
Chris Lattner5f9e2722011-07-23 10:55:15 +0000666 Twine((int)TI.getPointerWidth(0)));
Mike Stump1eb44332009-09-09 15:08:12 +0000667
Eli Friedman15b91762009-06-05 07:05:05 +0000668 if (!LangOpts.CharIsSigned)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000669 Builder.defineMacro("__CHAR_UNSIGNED__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000670
James Molloya30d8602012-05-04 11:23:40 +0000671 if (!TargetInfo::isTypeSigned(TI.getWCharType()))
672 Builder.defineMacro("__WCHAR_UNSIGNED__");
673
Eli Friedman1cfeefd2011-04-21 05:45:45 +0000674 if (!TargetInfo::isTypeSigned(TI.getWIntType()))
675 Builder.defineMacro("__WINT_UNSIGNED__");
676
Chris Lattnerdcdd2a02009-11-12 08:08:27 +0000677 // Define exact-width integer types for stdint.h
Chris Lattner5f9e2722011-07-23 10:55:15 +0000678 Builder.defineMacro("__INT" + Twine(TI.getCharWidth()) + "_TYPE__",
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000679 "char");
Mike Stump1eb44332009-09-09 15:08:12 +0000680
Chris Lattnerdcdd2a02009-11-12 08:08:27 +0000681 if (TI.getShortWidth() > TI.getCharWidth())
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000682 DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder);
Mike Stump1eb44332009-09-09 15:08:12 +0000683
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000684 if (TI.getIntWidth() > TI.getShortWidth())
685 DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder);
686
687 if (TI.getLongWidth() > TI.getIntWidth())
688 DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder);
689
690 if (TI.getLongLongWidth() > TI.getLongWidth())
691 DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder);
692
Stephen Hinesc568f1e2014-07-21 00:47:37 -0700693 if (!LangOpts.MSVCCompat) {
694 DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder);
695 DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder);
696 DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder);
697
698 if (TI.getShortWidth() > TI.getCharWidth()) {
699 DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder);
700 DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder);
701 DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder);
702 }
703
704 if (TI.getIntWidth() > TI.getShortWidth()) {
705 DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder);
706 DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder);
707 DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder);
708 }
709
710 if (TI.getLongWidth() > TI.getIntWidth()) {
711 DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder);
712 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder);
713 DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder);
714 }
715
716 if (TI.getLongLongWidth() > TI.getLongWidth()) {
717 DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder);
718 DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder);
719 DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder);
720 }
721
722 DefineLeastWidthIntType(8, true, TI, Builder);
723 DefineLeastWidthIntType(8, false, TI, Builder);
724 DefineLeastWidthIntType(16, true, TI, Builder);
725 DefineLeastWidthIntType(16, false, TI, Builder);
726 DefineLeastWidthIntType(32, true, TI, Builder);
727 DefineLeastWidthIntType(32, false, TI, Builder);
728 DefineLeastWidthIntType(64, true, TI, Builder);
729 DefineLeastWidthIntType(64, false, TI, Builder);
730
731 DefineFastIntType(8, true, TI, Builder);
732 DefineFastIntType(8, false, TI, Builder);
733 DefineFastIntType(16, true, TI, Builder);
734 DefineFastIntType(16, false, TI, Builder);
735 DefineFastIntType(32, true, TI, Builder);
736 DefineFastIntType(32, false, TI, Builder);
737 DefineFastIntType(64, true, TI, Builder);
738 DefineFastIntType(64, false, TI, Builder);
739 }
740
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000741 if (const char *Prefix = TI.getUserLabelPrefix())
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000742 Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
Mike Stump1eb44332009-09-09 15:08:12 +0000743
Bob Wilson455e72e2012-07-19 03:52:53 +0000744 if (LangOpts.FastMath || LangOpts.FiniteMathOnly)
745 Builder.defineMacro("__FINITE_MATH_ONLY__", "1");
746 else
747 Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000748
Chris Lattnere116ccf2009-04-21 05:40:52 +0000749 if (LangOpts.GNUInline)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000750 Builder.defineMacro("__GNUC_GNU_INLINE__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000751 else
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000752 Builder.defineMacro("__GNUC_STDC_INLINE__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000753
Richard Smith2c39d712012-04-13 00:45:38 +0000754 // The value written by __atomic_test_and_set.
755 // FIXME: This is target-dependent.
756 Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
757
758 // Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
759 unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
760#define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
761 Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \
762 getLockFreeValue(TI.get##Type##Width(), \
763 TI.get##Type##Align(), \
764 InlineWidthBits));
765 DEFINE_LOCK_FREE_MACRO(BOOL, Bool);
766 DEFINE_LOCK_FREE_MACRO(CHAR, Char);
767 DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16);
768 DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32);
769 DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar);
770 DEFINE_LOCK_FREE_MACRO(SHORT, Short);
771 DEFINE_LOCK_FREE_MACRO(INT, Int);
772 DEFINE_LOCK_FREE_MACRO(LONG, Long);
773 DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
774 Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE",
775 getLockFreeValue(TI.getPointerWidth(0),
776 TI.getPointerAlign(0),
777 InlineWidthBits));
778#undef DEFINE_LOCK_FREE_MACRO
779
Daniel Dunbar7b140262012-03-09 15:39:08 +0000780 if (LangOpts.NoInlineDefine)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000781 Builder.defineMacro("__NO_INLINE__");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000782
783 if (unsigned PICLevel = LangOpts.PICLevel) {
Chris Lattner5f9e2722011-07-23 10:55:15 +0000784 Builder.defineMacro("__PIC__", Twine(PICLevel));
785 Builder.defineMacro("__pic__", Twine(PICLevel));
Chris Lattnere116ccf2009-04-21 05:40:52 +0000786 }
Chandler Carruth5e219cf2012-04-08 16:40:35 +0000787 if (unsigned PIELevel = LangOpts.PIELevel) {
788 Builder.defineMacro("__PIE__", Twine(PIELevel));
789 Builder.defineMacro("__pie__", Twine(PIELevel));
790 }
Chris Lattnere116ccf2009-04-21 05:40:52 +0000791
792 // Macros to control C99 numerics and <float.h>
Benjamin Kramerb4066692011-12-28 15:47:06 +0000793 Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod()));
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000794 Builder.defineMacro("__FLT_RADIX__", "2");
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000795 int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36);
Chris Lattner5f9e2722011-07-23 10:55:15 +0000796 Builder.defineMacro("__DECIMAL_DIG__", Twine(Dig));
Bill Wendling45483f72009-06-28 07:36:13 +0000797
Douglas Gregore289d812011-09-13 17:21:33 +0000798 if (LangOpts.getStackProtector() == LangOptions::SSPOn)
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000799 Builder.defineMacro("__SSP__");
Stephen Hines651f13c2014-04-23 16:59:28 -0700800 else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
801 Builder.defineMacro("__SSP_STRONG__", "2");
Douglas Gregore289d812011-09-13 17:21:33 +0000802 else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
Stephen Hines651f13c2014-04-23 16:59:28 -0700803 Builder.defineMacro("__SSP_ALL__", "3");
Bill Wendling45483f72009-06-28 07:36:13 +0000804
Fariborz Jahanian7d957472010-01-13 18:51:17 +0000805 if (FEOpts.ProgramAction == frontend::RewriteObjC)
806 Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
Ted Kremenekf0af7772010-05-26 21:36:54 +0000807
808 // Define a macro that exists only when using the static analyzer.
809 if (FEOpts.ProgramAction == frontend::RunAnalysis)
810 Builder.defineMacro("__clang_analyzer__");
811
Peter Collingbournef0840822010-12-04 01:51:23 +0000812 if (LangOpts.FastRelaxedMath)
813 Builder.defineMacro("__FAST_RELAXED_MATH__");
814
John McCall098df7f2011-06-16 00:03:19 +0000815 if (LangOpts.ObjCAutoRefCount) {
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000816 Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))");
817 Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))");
John McCall098df7f2011-06-16 00:03:19 +0000818 Builder.defineMacro("__autoreleasing",
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000819 "__attribute__((objc_ownership(autoreleasing)))");
John McCall098df7f2011-06-16 00:03:19 +0000820 Builder.defineMacro("__unsafe_unretained",
Argyrios Kyrtzidisb8b03132011-06-24 00:08:59 +0000821 "__attribute__((objc_ownership(none)))");
John McCall098df7f2011-06-16 00:03:19 +0000822 }
823
Douglas Gregor50a70cd2013-01-15 06:45:29 +0000824 // OpenMP definition
825 if (LangOpts.OpenMP) {
Stephen Hines651f13c2014-04-23 16:59:28 -0700826 // OpenMP 2.2:
Douglas Gregor50a70cd2013-01-15 06:45:29 +0000827 // In implementations that support a preprocessor, the _OPENMP
828 // macro name is defined to have the decimal value yyyymm where
829 // yyyy and mm are the year and the month designations of the
830 // version of the OpenMP API that the implementation support.
Stephen Hines651f13c2014-04-23 16:59:28 -0700831 Builder.defineMacro("_OPENMP", "201307");
Douglas Gregor50a70cd2013-01-15 06:45:29 +0000832 }
833
Chris Lattnere116ccf2009-04-21 05:40:52 +0000834 // Get other target #defines.
Benjamin Kramera9992772010-01-09 17:55:51 +0000835 TI.getTargetDefines(LangOpts, Builder);
Chris Lattnere116ccf2009-04-21 05:40:52 +0000836}
837
838/// InitializePreprocessor - Initialize the preprocessor getting it and the
839/// environment ready to process a single file. This returns true on error.
840///
Daniel Dunbar938963f2009-11-04 21:13:15 +0000841void clang::InitializePreprocessor(Preprocessor &PP,
Daniel Dunbar961c76e2009-11-11 21:44:42 +0000842 const PreprocessorOptions &InitOpts,
Fariborz Jahanian7d957472010-01-13 18:51:17 +0000843 const FrontendOptions &FEOpts) {
David Blaikie4e4d0842012-03-11 07:00:24 +0000844 const LangOptions &LangOpts = PP.getLangOpts();
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000845 std::string PredefineBuffer;
846 PredefineBuffer.reserve(4080);
847 llvm::raw_string_ostream Predefines(PredefineBuffer);
848 MacroBuilder Builder(Predefines);
Mike Stump1eb44332009-09-09 15:08:12 +0000849
Chris Lattnerfcaa9e72010-04-26 22:08:10 +0000850 // Emit line markers for various builtin sections of the file. We don't do
851 // this in asm preprocessor mode, because "# 4" is not a line marker directive
852 // in this mode.
David Blaikie4e4d0842012-03-11 07:00:24 +0000853 if (!PP.getLangOpts().AsmPreprocessor)
Chris Lattnerfcaa9e72010-04-26 22:08:10 +0000854 Builder.append("# 1 \"<built-in>\" 3");
Mike Stump1eb44332009-09-09 15:08:12 +0000855
Chris Lattnere116ccf2009-04-21 05:40:52 +0000856 // Install things like __POWERPC__, __GNUC__, etc into the macro table.
John McCallf85e1932011-06-15 23:02:42 +0000857 if (InitOpts.UsePredefines) {
858 InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts, Builder);
Mike Stump1eb44332009-09-09 15:08:12 +0000859
John McCallf85e1932011-06-15 23:02:42 +0000860 // Install definitions to make Objective-C++ ARC work well with various
861 // C++ Standard Library implementations.
862 if (LangOpts.ObjC1 && LangOpts.CPlusPlus && LangOpts.ObjCAutoRefCount) {
863 switch (InitOpts.ObjCXXARCStandardLibrary) {
864 case ARCXX_nolib:
Douglas Gregored73b102011-09-27 22:48:19 +0000865 case ARCXX_libcxx:
John McCallf85e1932011-06-15 23:02:42 +0000866 break;
867
868 case ARCXX_libstdcxx:
869 AddObjCXXARCLibstdcxxDefines(LangOpts, Builder);
870 break;
871 }
872 }
873 }
874
Nick Lewyckya9c64412011-06-07 06:07:12 +0000875 // Even with predefines off, some macros are still predefined.
876 // These should all be defined in the preprocessor according to the
877 // current language configuration.
David Blaikie4e4d0842012-03-11 07:00:24 +0000878 InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(),
Nick Lewyckya9c64412011-06-07 06:07:12 +0000879 FEOpts, Builder);
880
Chris Lattnere116ccf2009-04-21 05:40:52 +0000881 // Add on the predefines from the driver. Wrap in a #line directive to report
882 // that they come from the command line.
David Blaikie4e4d0842012-03-11 07:00:24 +0000883 if (!PP.getLangOpts().AsmPreprocessor)
Chris Lattnerfcaa9e72010-04-26 22:08:10 +0000884 Builder.append("# 1 \"<command line>\" 1");
Chris Lattnere116ccf2009-04-21 05:40:52 +0000885
886 // Process #define's and #undef's in the order they are given.
Daniel Dunbar049d3a02009-11-17 05:52:41 +0000887 for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
888 if (InitOpts.Macros[i].second) // isUndef
Benjamin Kramerb1b5b902010-01-09 17:43:21 +0000889 Builder.undefineMacro(InitOpts.Macros[i].first);
Chris Lattner62f86c42009-04-21 06:00:24 +0000890 else
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000891 DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
Daniel Dunbar1ee4b9e2010-01-10 00:46:21 +0000892 PP.getDiagnostics());
Chris Lattnere116ccf2009-04-21 05:40:52 +0000893 }
894
895 // If -imacros are specified, include them now. These are processed before
896 // any -include directives.
Daniel Dunbar049d3a02009-11-17 05:52:41 +0000897 for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
Nick Lewycky277a6e72011-02-23 21:16:44 +0000898 AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i],
899 PP.getFileManager());
Chris Lattnere116ccf2009-04-21 05:40:52 +0000900
Argyrios Kyrtzidis3ad86fd2013-02-05 16:36:52 +0000901 // Process -include-pch/-include-pth directives.
902 if (!InitOpts.ImplicitPCHInclude.empty())
903 AddImplicitIncludePCH(Builder, PP, InitOpts.ImplicitPCHInclude);
904 if (!InitOpts.ImplicitPTHInclude.empty())
905 AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude);
906
Chris Lattnere116ccf2009-04-21 05:40:52 +0000907 // Process -include directives.
Daniel Dunbar049d3a02009-11-17 05:52:41 +0000908 for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
909 const std::string &Path = InitOpts.Includes[i];
Argyrios Kyrtzidis3ad86fd2013-02-05 16:36:52 +0000910 AddImplicitInclude(Builder, Path, PP.getFileManager());
Eli Friedmanae96a962009-06-15 09:57:52 +0000911 }
Chris Lattnere116ccf2009-04-21 05:40:52 +0000912
Rafael Espindola0259d202009-12-01 18:28:16 +0000913 // Exit the command line and go back to <built-in> (2 is LC_LEAVE).
David Blaikie4e4d0842012-03-11 07:00:24 +0000914 if (!PP.getLangOpts().AsmPreprocessor)
Chris Lattnerfcaa9e72010-04-26 22:08:10 +0000915 Builder.append("# 1 \"<built-in>\" 2");
Rafael Espindola0259d202009-12-01 18:28:16 +0000916
Douglas Gregorf4f6c9d2010-07-26 21:36:20 +0000917 // Instruct the preprocessor to skip the preamble.
918 PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first,
919 InitOpts.PrecompiledPreambleBytes.second);
920
Benjamin Kramera3d8ced2010-01-09 16:17:37 +0000921 // Copy PredefinedBuffer into the Preprocessor.
922 PP.setPredefines(Predefines.str());
Chris Lattnere116ccf2009-04-21 05:40:52 +0000923}