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//===--- InitPreprocessor.cpp - PP initialization code. ---------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the clang::InitializePreprocessor function.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/MacroBuilder.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/SyncScope.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Basic/Version.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "clang/Frontend/FrontendOptions.h"
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#include "clang/Frontend/Utils.h"
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#include "clang/Lex/HeaderSearch.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Lex/PreprocessorOptions.h"
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#include "clang/Serialization/ASTReader.h"
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#include "llvm/ADT/APFloat.h"
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#include "llvm/IR/DataLayout.h"
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using namespace clang;
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static bool MacroBodyEndsInBackslash(StringRef MacroBody) {
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while (!MacroBody.empty() && isWhitespace(MacroBody.back()))
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MacroBody = MacroBody.drop_back();
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return !MacroBody.empty() && MacroBody.back() == '\\';
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}
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// Append a #define line to Buf for Macro. Macro should be of the form XXX,
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// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
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// "#define XXX Y z W". To get a #define with no value, use "XXX=".
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static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro,
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DiagnosticsEngine &Diags) {
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std::pair<StringRef, StringRef> MacroPair = Macro.split('=');
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StringRef MacroName = MacroPair.first;
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StringRef MacroBody = MacroPair.second;
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if (MacroName.size() != Macro.size()) {
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// Per GCC -D semantics, the macro ends at \n if it exists.
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StringRef::size_type End = MacroBody.find_first_of("\n\r");
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if (End != StringRef::npos)
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Diags.Report(diag::warn_fe_macro_contains_embedded_newline)
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<< MacroName;
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MacroBody = MacroBody.substr(0, End);
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// We handle macro bodies which end in a backslash by appending an extra
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// backslash+newline. This makes sure we don't accidentally treat the
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// backslash as a line continuation marker.
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if (MacroBodyEndsInBackslash(MacroBody))
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Builder.defineMacro(MacroName, Twine(MacroBody) + "\\\n");
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else
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Builder.defineMacro(MacroName, MacroBody);
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} else {
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// Push "macroname 1".
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Builder.defineMacro(Macro);
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}
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}
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/// AddImplicitInclude - Add an implicit \#include of the specified file to the
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/// predefines buffer.
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/// As these includes are generated by -include arguments the header search
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/// logic is going to search relatively to the current working directory.
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static void AddImplicitInclude(MacroBuilder &Builder, StringRef File) {
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Builder.append(Twine("#include \"") + File + "\"");
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}
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static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) {
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Builder.append(Twine("#__include_macros \"") + File + "\"");
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// Marker token to stop the __include_macros fetch loop.
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Builder.append("##"); // ##?
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}
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/// Add an implicit \#include using the original file used to generate
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/// a PCH file.
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static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP,
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const PCHContainerReader &PCHContainerRdr,
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StringRef ImplicitIncludePCH) {
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std::string OriginalFile = ASTReader::getOriginalSourceFile(
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std::string(ImplicitIncludePCH), PP.getFileManager(), PCHContainerRdr,
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PP.getDiagnostics());
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if (OriginalFile.empty())
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return;
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AddImplicitInclude(Builder, OriginalFile);
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}
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/// PickFP - This is used to pick a value based on the FP semantics of the
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/// specified FP model.
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template <typename T>
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static T PickFP(const llvm::fltSemantics *Sem, T IEEEHalfVal, T IEEESingleVal,
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T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
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T IEEEQuadVal) {
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEhalf())
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return IEEEHalfVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle())
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return IEEESingleVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble())
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return IEEEDoubleVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended())
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return X87DoubleExtendedVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble())
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return PPCDoubleDoubleVal;
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assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad());
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return IEEEQuadVal;
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}
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static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
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const llvm::fltSemantics *Sem, StringRef Ext) {
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const char *DenormMin, *Epsilon, *Max, *Min;
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DenormMin = PickFP(Sem, "5.9604644775390625e-8", "1.40129846e-45",
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"4.9406564584124654e-324", "3.64519953188247460253e-4951",
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"4.94065645841246544176568792868221e-324",
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"6.47517511943802511092443895822764655e-4966");
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int Digits = PickFP(Sem, 3, 6, 15, 18, 31, 33);
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int DecimalDigits = PickFP(Sem, 5, 9, 17, 21, 33, 36);
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Epsilon = PickFP(Sem, "9.765625e-4", "1.19209290e-7",
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"2.2204460492503131e-16", "1.08420217248550443401e-19",
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"4.94065645841246544176568792868221e-324",
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"1.92592994438723585305597794258492732e-34");
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int MantissaDigits = PickFP(Sem, 11, 24, 53, 64, 106, 113);
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int Min10Exp = PickFP(Sem, -4, -37, -307, -4931, -291, -4931);
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int Max10Exp = PickFP(Sem, 4, 38, 308, 4932, 308, 4932);
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int MinExp = PickFP(Sem, -13, -125, -1021, -16381, -968, -16381);
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int MaxExp = PickFP(Sem, 16, 128, 1024, 16384, 1024, 16384);
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Min = PickFP(Sem, "6.103515625e-5", "1.17549435e-38", "2.2250738585072014e-308",
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"3.36210314311209350626e-4932",
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"2.00416836000897277799610805135016e-292",
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"3.36210314311209350626267781732175260e-4932");
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Max = PickFP(Sem, "6.5504e+4", "3.40282347e+38", "1.7976931348623157e+308",
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"1.18973149535723176502e+4932",
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"1.79769313486231580793728971405301e+308",
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"1.18973149535723176508575932662800702e+4932");
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SmallString<32> DefPrefix;
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DefPrefix = "__";
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DefPrefix += Prefix;
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DefPrefix += "_";
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Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext);
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Builder.defineMacro(DefPrefix + "HAS_DENORM__");
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Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits));
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Builder.defineMacro(DefPrefix + "DECIMAL_DIG__", Twine(DecimalDigits));
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Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext);
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Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
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Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
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Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits));
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Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp));
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Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp));
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Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext);
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Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")");
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Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")");
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Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext);
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}
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/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro
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/// named MacroName with the max value for a type with width 'TypeWidth' a
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/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL).
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static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth,
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StringRef ValSuffix, bool isSigned,
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MacroBuilder &Builder) {
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llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth)
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: llvm::APInt::getMaxValue(TypeWidth);
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Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix);
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}
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/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
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/// the width, suffix, and signedness of the given type
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static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
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TI.isTypeSigned(Ty), Builder);
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}
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static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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bool IsSigned = TI.isTypeSigned(Ty);
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StringRef FmtModifier = TI.getTypeFormatModifier(Ty);
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for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) {
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Builder.defineMacro(Prefix + "_FMT" + Twine(*Fmt) + "__",
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Twine("\"") + FmtModifier + Twine(*Fmt) + "\"");
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}
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}
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static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
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MacroBuilder &Builder) {
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Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
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}
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static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty)));
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}
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static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth,
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const TargetInfo &TI, MacroBuilder &Builder) {
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Builder.defineMacro(MacroName,
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Twine(BitWidth / TI.getCharWidth()));
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}
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static void DefineExactWidthIntType(TargetInfo::IntType Ty,
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const TargetInfo &TI,
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MacroBuilder &Builder) {
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int TypeWidth = TI.getTypeWidth(Ty);
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bool IsSigned = TI.isTypeSigned(Ty);
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// Use the target specified int64 type, when appropriate, so that [u]int64_t
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// ends up being defined in terms of the correct type.
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if (TypeWidth == 64)
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Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
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const char *Prefix = IsSigned ? "__INT" : "__UINT";
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DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
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DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
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StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty));
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Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
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}
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static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty,
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const TargetInfo &TI,
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MacroBuilder &Builder) {
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int TypeWidth = TI.getTypeWidth(Ty);
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bool IsSigned = TI.isTypeSigned(Ty);
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// Use the target specified int64 type, when appropriate, so that [u]int64_t
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// ends up being defined in terms of the correct type.
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if (TypeWidth == 64)
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Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
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const char *Prefix = IsSigned ? "__INT" : "__UINT";
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DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
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}
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static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned,
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const TargetInfo &TI,
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MacroBuilder &Builder) {
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TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
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if (Ty == TargetInfo::NoInt)
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return;
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const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST";
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DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
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DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
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DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
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}
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static void DefineFastIntType(unsigned TypeWidth, bool IsSigned,
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const TargetInfo &TI, MacroBuilder &Builder) {
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// stdint.h currently defines the fast int types as equivalent to the least
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// types.
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TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
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if (Ty == TargetInfo::NoInt)
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return;
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const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST";
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DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
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DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
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DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
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}
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/// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with
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/// the specified properties.
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static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign,
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unsigned InlineWidth) {
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// Fully-aligned, power-of-2 sizes no larger than the inline
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// width will be inlined as lock-free operations.
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if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 &&
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TypeWidth <= InlineWidth)
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return "2"; // "always lock free"
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// We cannot be certain what operations the lib calls might be
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// able to implement as lock-free on future processors.
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return "1"; // "sometimes lock free"
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}
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/// Add definitions required for a smooth interaction between
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/// Objective-C++ automated reference counting and libstdc++ (4.2).
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static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts,
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MacroBuilder &Builder) {
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Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR");
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std::string Result;
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{
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// Provide specializations for the __is_scalar type trait so that
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// lifetime-qualified objects are not considered "scalar" types, which
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// libstdc++ uses as an indicator of the presence of trivial copy, assign,
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// default-construct, and destruct semantics (none of which hold for
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// lifetime-qualified objects in ARC).
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llvm::raw_string_ostream Out(Result);
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Out << "namespace std {\n"
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<< "\n"
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<< "struct __true_type;\n"
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<< "struct __false_type;\n"
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<< "\n";
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Out << "template<typename _Tp> struct __is_scalar;\n"
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<< "\n";
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if (LangOpts.ObjCAutoRefCount) {
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Out << "template<typename _Tp>\n"
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<< "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n"
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<< " enum { __value = 0 };\n"
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<< " typedef __false_type __type;\n"
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<< "};\n"
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<< "\n";
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}
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|
if (LangOpts.ObjCWeak) {
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Out << "template<typename _Tp>\n"
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|
<< "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n"
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<< " enum { __value = 0 };\n"
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<< " typedef __false_type __type;\n"
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<< "};\n"
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<< "\n";
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}
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|
if (LangOpts.ObjCAutoRefCount) {
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Out << "template<typename _Tp>\n"
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<< "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))"
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<< " _Tp> {\n"
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<< " enum { __value = 0 };\n"
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<< " typedef __false_type __type;\n"
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<< "};\n"
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<< "\n";
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}
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Out << "}\n";
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}
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Builder.append(Result);
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}
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static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
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const LangOptions &LangOpts,
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|
const FrontendOptions &FEOpts,
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|
|
MacroBuilder &Builder) {
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|
|
// C++ [cpp.predefined]p1:
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|
|
// The following macro names shall be defined by the implementation:
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|
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// -- __STDC__
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|
// [C++] Whether __STDC__ is predefined and if so, what its value is,
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|
// are implementation-defined.
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|
|
// (Removed in C++20.)
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|
|
if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP)
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|
|
Builder.defineMacro("__STDC__");
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|
|
// -- __STDC_HOSTED__
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|
|
// The integer literal 1 if the implementation is a hosted
|
|
|
// implementation or the integer literal 0 if it is not.
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|
|
if (LangOpts.Freestanding)
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|
|
Builder.defineMacro("__STDC_HOSTED__", "0");
|
|
|
else
|
|
|
Builder.defineMacro("__STDC_HOSTED__");
|
|
|
|
|
|
// -- __STDC_VERSION__
|
|
|
// [C++] Whether __STDC_VERSION__ is predefined and if so, what its
|
|
|
// value is, are implementation-defined.
|
|
|
// (Removed in C++20.)
|
|
|
if (!LangOpts.CPlusPlus) {
|
|
|
if (LangOpts.C17)
|
|
|
Builder.defineMacro("__STDC_VERSION__", "201710L");
|
|
|
else if (LangOpts.C11)
|
|
|
Builder.defineMacro("__STDC_VERSION__", "201112L");
|
|
|
else if (LangOpts.C99)
|
|
|
Builder.defineMacro("__STDC_VERSION__", "199901L");
|
|
|
else if (!LangOpts.GNUMode && LangOpts.Digraphs)
|
|
|
Builder.defineMacro("__STDC_VERSION__", "199409L");
|
|
|
} else {
|
|
|
// -- __cplusplus
|
|
|
// FIXME: Use correct value for C++23.
|
|
|
if (LangOpts.CPlusPlus2b)
|
|
|
Builder.defineMacro("__cplusplus", "202101L");
|
|
|
// [C++20] The integer literal 202002L.
|
|
|
else if (LangOpts.CPlusPlus20)
|
|
|
Builder.defineMacro("__cplusplus", "202002L");
|
|
|
// [C++17] The integer literal 201703L.
|
|
|
else if (LangOpts.CPlusPlus17)
|
|
|
Builder.defineMacro("__cplusplus", "201703L");
|
|
|
// [C++14] The name __cplusplus is defined to the value 201402L when
|
|
|
// compiling a C++ translation unit.
|
|
|
else if (LangOpts.CPlusPlus14)
|
|
|
Builder.defineMacro("__cplusplus", "201402L");
|
|
|
// [C++11] The name __cplusplus is defined to the value 201103L when
|
|
|
// compiling a C++ translation unit.
|
|
|
else if (LangOpts.CPlusPlus11)
|
|
|
Builder.defineMacro("__cplusplus", "201103L");
|
|
|
// [C++03] The name __cplusplus is defined to the value 199711L when
|
|
|
// compiling a C++ translation unit.
|
|
|
else
|
|
|
Builder.defineMacro("__cplusplus", "199711L");
|
|
|
|
|
|
// -- __STDCPP_DEFAULT_NEW_ALIGNMENT__
|
|
|
// [C++17] An integer literal of type std::size_t whose value is the
|
|
|
// alignment guaranteed by a call to operator new(std::size_t)
|
|
|
//
|
|
|
// We provide this in all language modes, since it seems generally useful.
|
|
|
Builder.defineMacro("__STDCPP_DEFAULT_NEW_ALIGNMENT__",
|
|
|
Twine(TI.getNewAlign() / TI.getCharWidth()) +
|
|
|
TI.getTypeConstantSuffix(TI.getSizeType()));
|
|
|
|
|
|
// -- __STDCPP_THREADS__
|
|
|
// Defined, and has the value integer literal 1, if and only if a
|
|
|
// program can have more than one thread of execution.
|
|
|
if (LangOpts.getThreadModel() == LangOptions::ThreadModelKind::POSIX)
|
|
|
Builder.defineMacro("__STDCPP_THREADS__", "1");
|
|
|
}
|
|
|
|
|
|
// In C11 these are environment macros. In C++11 they are only defined
|
|
|
// as part of <cuchar>. To prevent breakage when mixing C and C++
|
|
|
// code, define these macros unconditionally. We can define them
|
|
|
// unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit
|
|
|
// and 32-bit character literals.
|
|
|
Builder.defineMacro("__STDC_UTF_16__", "1");
|
|
|
Builder.defineMacro("__STDC_UTF_32__", "1");
|
|
|
|
|
|
if (LangOpts.ObjC)
|
|
|
Builder.defineMacro("__OBJC__");
|
|
|
|
|
|
// OpenCL v1.0/1.1 s6.9, v1.2/2.0 s6.10: Preprocessor Directives and Macros.
|
|
|
if (LangOpts.OpenCL) {
|
|
|
if (LangOpts.CPlusPlus) {
|
|
|
if (LangOpts.OpenCLCPlusPlusVersion == 100)
|
|
|
Builder.defineMacro("__OPENCL_CPP_VERSION__", "100");
|
|
|
else
|
|
|
llvm_unreachable("Unsupported C++ version for OpenCL");
|
|
|
Builder.defineMacro("__CL_CPP_VERSION_1_0__", "100");
|
|
|
} else {
|
|
|
// OpenCL v1.0 and v1.1 do not have a predefined macro to indicate the
|
|
|
// language standard with which the program is compiled. __OPENCL_VERSION__
|
|
|
// is for the OpenCL version supported by the OpenCL device, which is not
|
|
|
// necessarily the language standard with which the program is compiled.
|
|
|
// A shared OpenCL header file requires a macro to indicate the language
|
|
|
// standard. As a workaround, __OPENCL_C_VERSION__ is defined for
|
|
|
// OpenCL v1.0 and v1.1.
|
|
|
switch (LangOpts.OpenCLVersion) {
|
|
|
case 100:
|
|
|
Builder.defineMacro("__OPENCL_C_VERSION__", "100");
|
|
|
break;
|
|
|
case 110:
|
|
|
Builder.defineMacro("__OPENCL_C_VERSION__", "110");
|
|
|
break;
|
|
|
case 120:
|
|
|
Builder.defineMacro("__OPENCL_C_VERSION__", "120");
|
|
|
break;
|
|
|
case 200:
|
|
|
Builder.defineMacro("__OPENCL_C_VERSION__", "200");
|
|
|
break;
|
|
|
case 300:
|
|
|
Builder.defineMacro("__OPENCL_C_VERSION__", "300");
|
|
|
break;
|
|
|
default:
|
|
|
llvm_unreachable("Unsupported OpenCL version");
|
|
|
}
|
|
|
}
|
|
|
Builder.defineMacro("CL_VERSION_1_0", "100");
|
|
|
Builder.defineMacro("CL_VERSION_1_1", "110");
|
|
|
Builder.defineMacro("CL_VERSION_1_2", "120");
|
|
|
Builder.defineMacro("CL_VERSION_2_0", "200");
|
|
|
Builder.defineMacro("CL_VERSION_3_0", "300");
|
|
|
|
|
|
if (TI.isLittleEndian())
|
|
|
Builder.defineMacro("__ENDIAN_LITTLE__");
|
|
|
|
|
|
if (LangOpts.FastRelaxedMath)
|
|
|
Builder.defineMacro("__FAST_RELAXED_MATH__");
|
|
|
}
|
|
|
|
|
|
if (LangOpts.SYCL) {
|
|
|
// SYCL Version is set to a value when building SYCL applications
|
|
|
if (LangOpts.SYCLVersion == 2017)
|
|
|
Builder.defineMacro("CL_SYCL_LANGUAGE_VERSION", "121");
|
|
|
}
|
|
|
|
|
|
// Not "standard" per se, but available even with the -undef flag.
|
|
|
if (LangOpts.AsmPreprocessor)
|
|
|
Builder.defineMacro("__ASSEMBLER__");
|
|
|
if (LangOpts.CUDA && !LangOpts.HIP)
|
|
|
Builder.defineMacro("__CUDA__");
|
|
|
if (LangOpts.HIP) {
|
|
|
Builder.defineMacro("__HIP__");
|
|
|
Builder.defineMacro("__HIPCC__");
|
|
|
if (LangOpts.CUDAIsDevice)
|
|
|
Builder.defineMacro("__HIP_DEVICE_COMPILE__");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// Initialize the predefined C++ language feature test macros defined in
|
|
|
/// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations".
|
|
|
static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
|
|
|
MacroBuilder &Builder) {
|
|
|
// C++98 features.
|
|
|
if (LangOpts.RTTI)
|
|
|
Builder.defineMacro("__cpp_rtti", "199711L");
|
|
|
if (LangOpts.CXXExceptions)
|
|
|
Builder.defineMacro("__cpp_exceptions", "199711L");
|
|
|
|
|
|
// C++11 features.
|
|
|
if (LangOpts.CPlusPlus11) {
|
|
|
Builder.defineMacro("__cpp_unicode_characters", "200704L");
|
|
|
Builder.defineMacro("__cpp_raw_strings", "200710L");
|
|
|
Builder.defineMacro("__cpp_unicode_literals", "200710L");
|
|
|
Builder.defineMacro("__cpp_user_defined_literals", "200809L");
|
|
|
Builder.defineMacro("__cpp_lambdas", "200907L");
|
|
|
Builder.defineMacro("__cpp_constexpr",
|
|
|
LangOpts.CPlusPlus20 ? "201907L" :
|
|
|
LangOpts.CPlusPlus17 ? "201603L" :
|
|
|
LangOpts.CPlusPlus14 ? "201304L" : "200704");
|
|
|
Builder.defineMacro("__cpp_constexpr_in_decltype", "201711L");
|
|
|
Builder.defineMacro("__cpp_range_based_for",
|
|
|
LangOpts.CPlusPlus17 ? "201603L" : "200907");
|
|
|
Builder.defineMacro("__cpp_static_assert",
|
|
|
LangOpts.CPlusPlus17 ? "201411L" : "200410");
|
|
|
Builder.defineMacro("__cpp_decltype", "200707L");
|
|
|
Builder.defineMacro("__cpp_attributes", "200809L");
|
|
|
Builder.defineMacro("__cpp_rvalue_references", "200610L");
|
|
|
Builder.defineMacro("__cpp_variadic_templates", "200704L");
|
|
|
Builder.defineMacro("__cpp_initializer_lists", "200806L");
|
|
|
Builder.defineMacro("__cpp_delegating_constructors", "200604L");
|
|
|
Builder.defineMacro("__cpp_nsdmi", "200809L");
|
|
|
Builder.defineMacro("__cpp_inheriting_constructors", "201511L");
|
|
|
Builder.defineMacro("__cpp_ref_qualifiers", "200710L");
|
|
|
Builder.defineMacro("__cpp_alias_templates", "200704L");
|
|
|
}
|
|
|
if (LangOpts.ThreadsafeStatics)
|
|
|
Builder.defineMacro("__cpp_threadsafe_static_init", "200806L");
|
|
|
|
|
|
// C++14 features.
|
|
|
if (LangOpts.CPlusPlus14) {
|
|
|
Builder.defineMacro("__cpp_binary_literals", "201304L");
|
|
|
Builder.defineMacro("__cpp_digit_separators", "201309L");
|
|
|
Builder.defineMacro("__cpp_init_captures",
|
|
|
LangOpts.CPlusPlus20 ? "201803L" : "201304L");
|
|
|
Builder.defineMacro("__cpp_generic_lambdas",
|
|
|
LangOpts.CPlusPlus20 ? "201707L" : "201304L");
|
|
|
Builder.defineMacro("__cpp_decltype_auto", "201304L");
|
|
|
Builder.defineMacro("__cpp_return_type_deduction", "201304L");
|
|
|
Builder.defineMacro("__cpp_aggregate_nsdmi", "201304L");
|
|
|
Builder.defineMacro("__cpp_variable_templates", "201304L");
|
|
|
}
|
|
|
if (LangOpts.SizedDeallocation)
|
|
|
Builder.defineMacro("__cpp_sized_deallocation", "201309L");
|
|
|
|
|
|
// C++17 features.
|
|
|
if (LangOpts.CPlusPlus17) {
|
|
|
Builder.defineMacro("__cpp_hex_float", "201603L");
|
|
|
Builder.defineMacro("__cpp_inline_variables", "201606L");
|
|
|
Builder.defineMacro("__cpp_noexcept_function_type", "201510L");
|
|
|
Builder.defineMacro("__cpp_capture_star_this", "201603L");
|
|
|
Builder.defineMacro("__cpp_if_constexpr", "201606L");
|
|
|
Builder.defineMacro("__cpp_deduction_guides", "201703L"); // (not latest)
|
|
|
Builder.defineMacro("__cpp_template_auto", "201606L"); // (old name)
|
|
|
Builder.defineMacro("__cpp_namespace_attributes", "201411L");
|
|
|
Builder.defineMacro("__cpp_enumerator_attributes", "201411L");
|
|
|
Builder.defineMacro("__cpp_nested_namespace_definitions", "201411L");
|
|
|
Builder.defineMacro("__cpp_variadic_using", "201611L");
|
|
|
Builder.defineMacro("__cpp_aggregate_bases", "201603L");
|
|
|
Builder.defineMacro("__cpp_structured_bindings", "201606L");
|
|
|
Builder.defineMacro("__cpp_nontype_template_args",
|
|
|
"201411L"); // (not latest)
|
|
|
Builder.defineMacro("__cpp_fold_expressions", "201603L");
|
|
|
Builder.defineMacro("__cpp_guaranteed_copy_elision", "201606L");
|
|
|
Builder.defineMacro("__cpp_nontype_template_parameter_auto", "201606L");
|
|
|
}
|
|
|
if (LangOpts.AlignedAllocation && !LangOpts.AlignedAllocationUnavailable)
|
|
|
Builder.defineMacro("__cpp_aligned_new", "201606L");
|
|
|
if (LangOpts.RelaxedTemplateTemplateArgs)
|
|
|
Builder.defineMacro("__cpp_template_template_args", "201611L");
|
|
|
|
|
|
// C++20 features.
|
|
|
if (LangOpts.CPlusPlus20) {
|
|
|
//Builder.defineMacro("__cpp_aggregate_paren_init", "201902L");
|
|
|
Builder.defineMacro("__cpp_concepts", "201907L");
|
|
|
Builder.defineMacro("__cpp_conditional_explicit", "201806L");
|
|
|
//Builder.defineMacro("__cpp_consteval", "201811L");
|
|
|
Builder.defineMacro("__cpp_constexpr_dynamic_alloc", "201907L");
|
|
|
Builder.defineMacro("__cpp_constinit", "201907L");
|
|
|
//Builder.defineMacro("__cpp_coroutines", "201902L");
|
|
|
Builder.defineMacro("__cpp_designated_initializers", "201707L");
|
|
|
Builder.defineMacro("__cpp_impl_three_way_comparison", "201907L");
|
|
|
//Builder.defineMacro("__cpp_modules", "201907L");
|
|
|
//Builder.defineMacro("__cpp_using_enum", "201907L");
|
|
|
}
|
|
|
if (LangOpts.Char8)
|
|
|
Builder.defineMacro("__cpp_char8_t", "201811L");
|
|
|
Builder.defineMacro("__cpp_impl_destroying_delete", "201806L");
|
|
|
|
|
|
// TS features.
|
|
|
if (LangOpts.Coroutines)
|
|
|
Builder.defineMacro("__cpp_coroutines", "201703L");
|
|
|
}
|
|
|
|
|
|
static void InitializePredefinedMacros(const TargetInfo &TI,
|
|
|
const LangOptions &LangOpts,
|
|
|
const FrontendOptions &FEOpts,
|
|
|
const PreprocessorOptions &PPOpts,
|
|
|
MacroBuilder &Builder) {
|
|
|
// Compiler version introspection macros.
|
|
|
Builder.defineMacro("__llvm__"); // LLVM Backend
|
|
|
Builder.defineMacro("__clang__"); // Clang Frontend
|
|
|
#define TOSTR2(X) #X
|
|
|
#define TOSTR(X) TOSTR2(X)
|
|
|
Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR));
|
|
|
Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR));
|
|
|
Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL));
|
|
|
#undef TOSTR
|
|
|
#undef TOSTR2
|
|
|
Builder.defineMacro("__clang_version__",
|
|
|
"\"" CLANG_VERSION_STRING " "
|
|
|
+ getClangFullRepositoryVersion() + "\"");
|
|
|
|
|
|
if (LangOpts.GNUCVersion != 0) {
|
|
|
// Major, minor, patch, are given two decimal places each, so 4.2.1 becomes
|
|
|
// 40201.
|
|
|
unsigned GNUCMajor = LangOpts.GNUCVersion / 100 / 100;
|
|
|
unsigned GNUCMinor = LangOpts.GNUCVersion / 100 % 100;
|
|
|
unsigned GNUCPatch = LangOpts.GNUCVersion % 100;
|
|
|
Builder.defineMacro("__GNUC__", Twine(GNUCMajor));
|
|
|
Builder.defineMacro("__GNUC_MINOR__", Twine(GNUCMinor));
|
|
|
Builder.defineMacro("__GNUC_PATCHLEVEL__", Twine(GNUCPatch));
|
|
|
Builder.defineMacro("__GXX_ABI_VERSION", "1002");
|
|
|
|
|
|
if (LangOpts.CPlusPlus) {
|
|
|
Builder.defineMacro("__GNUG__", Twine(GNUCMajor));
|
|
|
Builder.defineMacro("__GXX_WEAK__");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Define macros for the C11 / C++11 memory orderings
|
|
|
Builder.defineMacro("__ATOMIC_RELAXED", "0");
|
|
|
Builder.defineMacro("__ATOMIC_CONSUME", "1");
|
|
|
Builder.defineMacro("__ATOMIC_ACQUIRE", "2");
|
|
|
Builder.defineMacro("__ATOMIC_RELEASE", "3");
|
|
|
Builder.defineMacro("__ATOMIC_ACQ_REL", "4");
|
|
|
Builder.defineMacro("__ATOMIC_SEQ_CST", "5");
|
|
|
|
|
|
// Define macros for the OpenCL memory scope.
|
|
|
// The values should match AtomicScopeOpenCLModel::ID enum.
|
|
|
static_assert(
|
|
|
static_cast<unsigned>(AtomicScopeOpenCLModel::WorkGroup) == 1 &&
|
|
|
static_cast<unsigned>(AtomicScopeOpenCLModel::Device) == 2 &&
|
|
|
static_cast<unsigned>(AtomicScopeOpenCLModel::AllSVMDevices) == 3 &&
|
|
|
static_cast<unsigned>(AtomicScopeOpenCLModel::SubGroup) == 4,
|
|
|
"Invalid OpenCL memory scope enum definition");
|
|
|
Builder.defineMacro("__OPENCL_MEMORY_SCOPE_WORK_ITEM", "0");
|
|
|
Builder.defineMacro("__OPENCL_MEMORY_SCOPE_WORK_GROUP", "1");
|
|
|
Builder.defineMacro("__OPENCL_MEMORY_SCOPE_DEVICE", "2");
|
|
|
Builder.defineMacro("__OPENCL_MEMORY_SCOPE_ALL_SVM_DEVICES", "3");
|
|
|
Builder.defineMacro("__OPENCL_MEMORY_SCOPE_SUB_GROUP", "4");
|
|
|
|
|
|
// Support for #pragma redefine_extname (Sun compatibility)
|
|
|
Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1");
|
|
|
|
|
|
// Previously this macro was set to a string aiming to achieve compatibility
|
|
|
// with GCC 4.2.1. Now, just return the full Clang version
|
|
|
Builder.defineMacro("__VERSION__", "\"" +
|
|
|
Twine(getClangFullCPPVersion()) + "\"");
|
|
|
|
|
|
// Initialize language-specific preprocessor defines.
|
|
|
|
|
|
// Standard conforming mode?
|
|
|
if (!LangOpts.GNUMode && !LangOpts.MSVCCompat)
|
|
|
Builder.defineMacro("__STRICT_ANSI__");
|
|
|
|
|
|
if (LangOpts.GNUCVersion && LangOpts.CPlusPlus11)
|
|
|
Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
|
|
|
|
|
|
if (LangOpts.ObjC) {
|
|
|
if (LangOpts.ObjCRuntime.isNonFragile()) {
|
|
|
Builder.defineMacro("__OBJC2__");
|
|
|
|
|
|
if (LangOpts.ObjCExceptions)
|
|
|
Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
|
|
|
}
|
|
|
|
|
|
if (LangOpts.getGC() != LangOptions::NonGC)
|
|
|
Builder.defineMacro("__OBJC_GC__");
|
|
|
|
|
|
if (LangOpts.ObjCRuntime.isNeXTFamily())
|
|
|
Builder.defineMacro("__NEXT_RUNTIME__");
|
|
|
|
|
|
if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::GNUstep) {
|
|
|
auto version = LangOpts.ObjCRuntime.getVersion();
|
|
|
std::string versionString = "1";
|
|
|
// Don't rely on the tuple argument, because we can be asked to target
|
|
|
// later ABIs than we actually support, so clamp these values to those
|
|
|
// currently supported
|
|
|
if (version >= VersionTuple(2, 0))
|
|
|
Builder.defineMacro("__OBJC_GNUSTEP_RUNTIME_ABI__", "20");
|
|
|
else
|
|
|
Builder.defineMacro("__OBJC_GNUSTEP_RUNTIME_ABI__",
|
|
|
"1" + Twine(std::min(8U, version.getMinor().getValueOr(0))));
|
|
|
}
|
|
|
|
|
|
if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) {
|
|
|
VersionTuple tuple = LangOpts.ObjCRuntime.getVersion();
|
|
|
|
|
|
unsigned minor = 0;
|
|
|
if (tuple.getMinor().hasValue())
|
|
|
minor = tuple.getMinor().getValue();
|
|
|
|
|
|
unsigned subminor = 0;
|
|
|
if (tuple.getSubminor().hasValue())
|
|
|
subminor = tuple.getSubminor().getValue();
|
|
|
|
|
|
Builder.defineMacro("__OBJFW_RUNTIME_ABI__",
|
|
|
Twine(tuple.getMajor() * 10000 + minor * 100 +
|
|
|
subminor));
|
|
|
}
|
|
|
|
|
|
Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))");
|
|
|
Builder.defineMacro("IBOutletCollection(ClassName)",
|
|
|
"__attribute__((iboutletcollection(ClassName)))");
|
|
|
Builder.defineMacro("IBAction", "void)__attribute__((ibaction)");
|
|
|
Builder.defineMacro("IBInspectable", "");
|
|
|
Builder.defineMacro("IB_DESIGNABLE", "");
|
|
|
}
|
|
|
|
|
|
// Define a macro that describes the Objective-C boolean type even for C
|
|
|
// and C++ since BOOL can be used from non Objective-C code.
|
|
|
Builder.defineMacro("__OBJC_BOOL_IS_BOOL",
|
|
|
Twine(TI.useSignedCharForObjCBool() ? "0" : "1"));
|
|
|
|
|
|
if (LangOpts.CPlusPlus)
|
|
|
InitializeCPlusPlusFeatureTestMacros(LangOpts, Builder);
|
|
|
|
|
|
// darwin_constant_cfstrings controls this. This is also dependent
|
|
|
// on other things like the runtime I believe. This is set even for C code.
|
|
|
if (!LangOpts.NoConstantCFStrings)
|
|
|
Builder.defineMacro("__CONSTANT_CFSTRINGS__");
|
|
|
|
|
|
if (LangOpts.ObjC)
|
|
|
Builder.defineMacro("OBJC_NEW_PROPERTIES");
|
|
|
|
|
|
if (LangOpts.PascalStrings)
|
|
|
Builder.defineMacro("__PASCAL_STRINGS__");
|
|
|
|
|
|
if (LangOpts.Blocks) {
|
|
|
Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
|
|
|
Builder.defineMacro("__BLOCKS__");
|
|
|
}
|
|
|
|
|
|
if (!LangOpts.MSVCCompat && LangOpts.Exceptions)
|
|
|
Builder.defineMacro("__EXCEPTIONS");
|
|
|
if (LangOpts.GNUCVersion && LangOpts.RTTI)
|
|
|
Builder.defineMacro("__GXX_RTTI");
|
|
|
|
|
|
if (LangOpts.SjLjExceptions)
|
|
|
Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
|
|
|
else if (LangOpts.SEHExceptions)
|
|
|
Builder.defineMacro("__SEH__");
|
|
|
else if (LangOpts.DWARFExceptions &&
|
|
|
(TI.getTriple().isThumb() || TI.getTriple().isARM()))
|
|
|
Builder.defineMacro("__ARM_DWARF_EH__");
|
|
|
|
|
|
if (LangOpts.Deprecated)
|
|
|
Builder.defineMacro("__DEPRECATED");
|
|
|
|
|
|
if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus)
|
|
|
Builder.defineMacro("__private_extern__", "extern");
|
|
|
|
|
|
if (LangOpts.MicrosoftExt) {
|
|
|
if (LangOpts.WChar) {
|
|
|
// wchar_t supported as a keyword.
|
|
|
Builder.defineMacro("_WCHAR_T_DEFINED");
|
|
|
Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (LangOpts.Optimize)
|
|
|
Builder.defineMacro("__OPTIMIZE__");
|
|
|
if (LangOpts.OptimizeSize)
|
|
|
Builder.defineMacro("__OPTIMIZE_SIZE__");
|
|
|
|
|
|
if (LangOpts.FastMath)
|
|
|
Builder.defineMacro("__FAST_MATH__");
|
|
|
|
|
|
// Initialize target-specific preprocessor defines.
|
|
|
|
|
|
// __BYTE_ORDER__ was added in GCC 4.6. It's analogous
|
|
|
// to the macro __BYTE_ORDER (no trailing underscores)
|
|
|
// from glibc's <endian.h> header.
|
|
|
// We don't support the PDP-11 as a target, but include
|
|
|
// the define so it can still be compared against.
|
|
|
Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234");
|
|
|
Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321");
|
|
|
Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412");
|
|
|
if (TI.isBigEndian()) {
|
|
|
Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__");
|
|
|
Builder.defineMacro("__BIG_ENDIAN__");
|
|
|
} else {
|
|
|
Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
|
|
|
Builder.defineMacro("__LITTLE_ENDIAN__");
|
|
|
}
|
|
|
|
|
|
if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64
|
|
|
&& TI.getIntWidth() == 32) {
|
|
|
Builder.defineMacro("_LP64");
|
|
|
Builder.defineMacro("__LP64__");
|
|
|
}
|
|
|
|
|
|
if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32
|
|
|
&& TI.getIntWidth() == 32) {
|
|
|
Builder.defineMacro("_ILP32");
|
|
|
Builder.defineMacro("__ILP32__");
|
|
|
}
|
|
|
|
|
|
// Define type sizing macros based on the target properties.
|
|
|
assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
|
|
|
Builder.defineMacro("__CHAR_BIT__", Twine(TI.getCharWidth()));
|
|
|
|
|
|
DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder);
|
|
|
DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
|
|
|
DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder);
|
|
|
DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder);
|
|
|
DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder);
|
|
|
DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder);
|
|
|
DefineTypeSize("__WINT_MAX__", TI.getWIntType(), TI, Builder);
|
|
|
DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder);
|
|
|
DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder);
|
|
|
|
|
|
DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder);
|
|
|
DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder);
|
|
|
DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder);
|
|
|
DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder);
|
|
|
|
|
|
DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_PTRDIFF_T__",
|
|
|
TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_SIZE_T__",
|
|
|
TI.getTypeWidth(TI.getSizeType()), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_WCHAR_T__",
|
|
|
TI.getTypeWidth(TI.getWCharType()), TI, Builder);
|
|
|
DefineTypeSizeof("__SIZEOF_WINT_T__",
|
|
|
TI.getTypeWidth(TI.getWIntType()), TI, Builder);
|
|
|
if (TI.hasInt128Type())
|
|
|
DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
|
|
|
|
|
|
DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
|
|
|
DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder);
|
|
|
Builder.defineMacro("__INTMAX_C_SUFFIX__",
|
|
|
TI.getTypeConstantSuffix(TI.getIntMaxType()));
|
|
|
DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
|
|
|
DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder);
|
|
|
Builder.defineMacro("__UINTMAX_C_SUFFIX__",
|
|
|
TI.getTypeConstantSuffix(TI.getUIntMaxType()));
|
|
|
DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
|
|
|
DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
|
|
|
DefineFmt("__PTRDIFF", TI.getPtrDiffType(0), TI, Builder);
|
|
|
DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
|
|
|
DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
|
|
|
DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder);
|
|
|
DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
|
|
|
DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
|
|
|
DefineFmt("__SIZE", TI.getSizeType(), TI, Builder);
|
|
|
DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder);
|
|
|
DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
|
|
|
DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder);
|
|
|
DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
|
|
|
DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder);
|
|
|
DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder);
|
|
|
DefineTypeSize("__SIG_ATOMIC_MAX__", TI.getSigAtomicType(), TI, Builder);
|
|
|
DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
|
|
|
DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
|
|
|
|
|
|
DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder);
|
|
|
DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder);
|
|
|
DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder);
|
|
|
DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder);
|
|
|
|
|
|
if (TI.hasFloat16Type())
|
|
|
DefineFloatMacros(Builder, "FLT16", &TI.getHalfFormat(), "F16");
|
|
|
DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
|
|
|
DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
|
|
|
DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
|
|
|
|
|
|
// Define a __POINTER_WIDTH__ macro for stdint.h.
|
|
|
Builder.defineMacro("__POINTER_WIDTH__",
|
|
|
Twine((int)TI.getPointerWidth(0)));
|
|
|
|
|
|
// Define __BIGGEST_ALIGNMENT__ to be compatible with gcc.
|
|
|
Builder.defineMacro("__BIGGEST_ALIGNMENT__",
|
|
|
Twine(TI.getSuitableAlign() / TI.getCharWidth()) );
|
|
|
|
|
|
if (!LangOpts.CharIsSigned)
|
|
|
Builder.defineMacro("__CHAR_UNSIGNED__");
|
|
|
|
|
|
if (!TargetInfo::isTypeSigned(TI.getWCharType()))
|
|
|
Builder.defineMacro("__WCHAR_UNSIGNED__");
|
|
|
|
|
|
if (!TargetInfo::isTypeSigned(TI.getWIntType()))
|
|
|
Builder.defineMacro("__WINT_UNSIGNED__");
|
|
|
|
|
|
// Define exact-width integer types for stdint.h
|
|
|
DefineExactWidthIntType(TargetInfo::SignedChar, TI, Builder);
|
|
|
|
|
|
if (TI.getShortWidth() > TI.getCharWidth())
|
|
|
DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder);
|
|
|
|
|
|
if (TI.getIntWidth() > TI.getShortWidth())
|
|
|
DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder);
|
|
|
|
|
|
if (TI.getLongWidth() > TI.getIntWidth())
|
|
|
DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder);
|
|
|
|
|
|
if (TI.getLongLongWidth() > TI.getLongWidth())
|
|
|
DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder);
|
|
|
|
|
|
DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder);
|
|
|
|
|
|
if (TI.getShortWidth() > TI.getCharWidth()) {
|
|
|
DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder);
|
|
|
}
|
|
|
|
|
|
if (TI.getIntWidth() > TI.getShortWidth()) {
|
|
|
DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder);
|
|
|
}
|
|
|
|
|
|
if (TI.getLongWidth() > TI.getIntWidth()) {
|
|
|
DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder);
|
|
|
}
|
|
|
|
|
|
if (TI.getLongLongWidth() > TI.getLongWidth()) {
|
|
|
DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder);
|
|
|
DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder);
|
|
|
}
|
|
|
|
|
|
DefineLeastWidthIntType(8, true, TI, Builder);
|
|
|
DefineLeastWidthIntType(8, false, TI, Builder);
|
|
|
DefineLeastWidthIntType(16, true, TI, Builder);
|
|
|
DefineLeastWidthIntType(16, false, TI, Builder);
|
|
|
DefineLeastWidthIntType(32, true, TI, Builder);
|
|
|
DefineLeastWidthIntType(32, false, TI, Builder);
|
|
|
DefineLeastWidthIntType(64, true, TI, Builder);
|
|
|
DefineLeastWidthIntType(64, false, TI, Builder);
|
|
|
|
|
|
DefineFastIntType(8, true, TI, Builder);
|
|
|
DefineFastIntType(8, false, TI, Builder);
|
|
|
DefineFastIntType(16, true, TI, Builder);
|
|
|
DefineFastIntType(16, false, TI, Builder);
|
|
|
DefineFastIntType(32, true, TI, Builder);
|
|
|
DefineFastIntType(32, false, TI, Builder);
|
|
|
DefineFastIntType(64, true, TI, Builder);
|
|
|
DefineFastIntType(64, false, TI, Builder);
|
|
|
|
|
|
char UserLabelPrefix[2] = {TI.getDataLayout().getGlobalPrefix(), 0};
|
|
|
Builder.defineMacro("__USER_LABEL_PREFIX__", UserLabelPrefix);
|
|
|
|
|
|
if (LangOpts.FastMath || LangOpts.FiniteMathOnly)
|
|
|
Builder.defineMacro("__FINITE_MATH_ONLY__", "1");
|
|
|
else
|
|
|
Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
|
|
|
|
|
|
if (LangOpts.GNUCVersion) {
|
|
|
if (LangOpts.GNUInline || LangOpts.CPlusPlus)
|
|
|
Builder.defineMacro("__GNUC_GNU_INLINE__");
|
|
|
else
|
|
|
Builder.defineMacro("__GNUC_STDC_INLINE__");
|
|
|
|
|
|
// The value written by __atomic_test_and_set.
|
|
|
// FIXME: This is target-dependent.
|
|
|
Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
|
|
|
}
|
|
|
|
|
|
auto addLockFreeMacros = [&](const llvm::Twine &Prefix) {
|
|
|
// Used by libc++ and libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
|
|
|
unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
|
|
|
#define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
|
|
|
Builder.defineMacro(Prefix + #TYPE "_LOCK_FREE", \
|
|
|
getLockFreeValue(TI.get##Type##Width(), \
|
|
|
TI.get##Type##Align(), \
|
|
|
InlineWidthBits));
|
|
|
DEFINE_LOCK_FREE_MACRO(BOOL, Bool);
|
|
|
DEFINE_LOCK_FREE_MACRO(CHAR, Char);
|
|
|
if (LangOpts.Char8)
|
|
|
DEFINE_LOCK_FREE_MACRO(CHAR8_T, Char); // Treat char8_t like char.
|
|
|
DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16);
|
|
|
DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32);
|
|
|
DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar);
|
|
|
DEFINE_LOCK_FREE_MACRO(SHORT, Short);
|
|
|
DEFINE_LOCK_FREE_MACRO(INT, Int);
|
|
|
DEFINE_LOCK_FREE_MACRO(LONG, Long);
|
|
|
DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
|
|
|
Builder.defineMacro(Prefix + "POINTER_LOCK_FREE",
|
|
|
getLockFreeValue(TI.getPointerWidth(0),
|
|
|
TI.getPointerAlign(0),
|
|
|
InlineWidthBits));
|
|
|
#undef DEFINE_LOCK_FREE_MACRO
|
|
|
};
|
|
|
addLockFreeMacros("__CLANG_ATOMIC_");
|
|
|
if (LangOpts.GNUCVersion)
|
|
|
addLockFreeMacros("__GCC_ATOMIC_");
|
|
|
|
|
|
if (LangOpts.NoInlineDefine)
|
|
|
Builder.defineMacro("__NO_INLINE__");
|
|
|
|
|
|
if (unsigned PICLevel = LangOpts.PICLevel) {
|
|
|
Builder.defineMacro("__PIC__", Twine(PICLevel));
|
|
|
Builder.defineMacro("__pic__", Twine(PICLevel));
|
|
|
if (LangOpts.PIE) {
|
|
|
Builder.defineMacro("__PIE__", Twine(PICLevel));
|
|
|
Builder.defineMacro("__pie__", Twine(PICLevel));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Macros to control C99 numerics and <float.h>
|
|
|
Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod()));
|
|
|
Builder.defineMacro("__FLT_RADIX__", "2");
|
|
|
Builder.defineMacro("__DECIMAL_DIG__", "__LDBL_DECIMAL_DIG__");
|
|
|
|
|
|
if (LangOpts.getStackProtector() == LangOptions::SSPOn)
|
|
|
Builder.defineMacro("__SSP__");
|
|
|
else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
|
|
|
Builder.defineMacro("__SSP_STRONG__", "2");
|
|
|
else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
|
|
|
Builder.defineMacro("__SSP_ALL__", "3");
|
|
|
|
|
|
if (PPOpts.SetUpStaticAnalyzer)
|
|
|
Builder.defineMacro("__clang_analyzer__");
|
|
|
|
|
|
if (LangOpts.FastRelaxedMath)
|
|
|
Builder.defineMacro("__FAST_RELAXED_MATH__");
|
|
|
|
|
|
if (FEOpts.ProgramAction == frontend::RewriteObjC ||
|
|
|
LangOpts.getGC() != LangOptions::NonGC) {
|
|
|
Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
|
|
|
Builder.defineMacro("__strong", "__attribute__((objc_gc(strong)))");
|
|
|
Builder.defineMacro("__autoreleasing", "");
|
|
|
Builder.defineMacro("__unsafe_unretained", "");
|
|
|
} else if (LangOpts.ObjC) {
|
|
|
Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))");
|
|
|
Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))");
|
|
|
Builder.defineMacro("__autoreleasing",
|
|
|
"__attribute__((objc_ownership(autoreleasing)))");
|
|
|
Builder.defineMacro("__unsafe_unretained",
|
|
|
"__attribute__((objc_ownership(none)))");
|
|
|
}
|
|
|
|
|
|
// On Darwin, there are __double_underscored variants of the type
|
|
|
// nullability qualifiers.
|
|
|
if (TI.getTriple().isOSDarwin()) {
|
|
|
Builder.defineMacro("__nonnull", "_Nonnull");
|
|
|
Builder.defineMacro("__null_unspecified", "_Null_unspecified");
|
|
|
Builder.defineMacro("__nullable", "_Nullable");
|
|
|
}
|
|
|
|
|
|
// Add a macro to differentiate between regular iOS/tvOS/watchOS targets and
|
|
|
// the corresponding simulator targets.
|
|
|
if (TI.getTriple().isOSDarwin() && TI.getTriple().isSimulatorEnvironment())
|
|
|
Builder.defineMacro("__APPLE_EMBEDDED_SIMULATOR__", "1");
|
|
|
|
|
|
// OpenMP definition
|
|
|
// OpenMP 2.2:
|
|
|
// In implementations that support a preprocessor, the _OPENMP
|
|
|
// macro name is defined to have the decimal value yyyymm where
|
|
|
// yyyy and mm are the year and the month designations of the
|
|
|
// version of the OpenMP API that the implementation support.
|
|
|
if (!LangOpts.OpenMPSimd) {
|
|
|
switch (LangOpts.OpenMP) {
|
|
|
case 0:
|
|
|
break;
|
|
|
case 31:
|
|
|
Builder.defineMacro("_OPENMP", "201107");
|
|
|
break;
|
|
|
case 40:
|
|
|
Builder.defineMacro("_OPENMP", "201307");
|
|
|
break;
|
|
|
case 45:
|
|
|
Builder.defineMacro("_OPENMP", "201511");
|
|
|
break;
|
|
|
default:
|
|
|
// Default version is OpenMP 5.0
|
|
|
Builder.defineMacro("_OPENMP", "201811");
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// CUDA device path compilaton
|
|
|
if (LangOpts.CUDAIsDevice && !LangOpts.HIP) {
|
|
|
// The CUDA_ARCH value is set for the GPU target specified in the NVPTX
|
|
|
// backend's target defines.
|
|
|
Builder.defineMacro("__CUDA_ARCH__");
|
|
|
}
|
|
|
|
|
|
// We need to communicate this to our CUDA header wrapper, which in turn
|
|
|
// informs the proper CUDA headers of this choice.
|
|
|
if (LangOpts.CUDADeviceApproxTranscendentals || LangOpts.FastMath) {
|
|
|
Builder.defineMacro("__CLANG_CUDA_APPROX_TRANSCENDENTALS__");
|
|
|
}
|
|
|
|
|
|
// Define a macro indicating that the source file is being compiled with a
|
|
|
// SYCL device compiler which doesn't produce host binary.
|
|
|
if (LangOpts.SYCLIsDevice) {
|
|
|
Builder.defineMacro("__SYCL_DEVICE_ONLY__", "1");
|
|
|
}
|
|
|
|
|
|
// OpenCL definitions.
|
|
|
if (LangOpts.OpenCL) {
|
|
|
#define OPENCLEXT(Ext) \
|
|
|
if (TI.getSupportedOpenCLOpts().isSupported(#Ext, LangOpts)) \
|
|
|
Builder.defineMacro(#Ext);
|
|
|
#include "clang/Basic/OpenCLExtensions.def"
|
|
|
|
|
|
if (TI.getTriple().isSPIR())
|
|
|
Builder.defineMacro("__IMAGE_SUPPORT__");
|
|
|
}
|
|
|
|
|
|
if (TI.hasInt128Type() && LangOpts.CPlusPlus && LangOpts.GNUMode) {
|
|
|
// For each extended integer type, g++ defines a macro mapping the
|
|
|
// index of the type (0 in this case) in some list of extended types
|
|
|
// to the type.
|
|
|
Builder.defineMacro("__GLIBCXX_TYPE_INT_N_0", "__int128");
|
|
|
Builder.defineMacro("__GLIBCXX_BITSIZE_INT_N_0", "128");
|
|
|
}
|
|
|
|
|
|
// Get other target #defines.
|
|
|
TI.getTargetDefines(LangOpts, Builder);
|
|
|
}
|
|
|
|
|
|
/// InitializePreprocessor - Initialize the preprocessor getting it and the
|
|
|
/// environment ready to process a single file. This returns true on error.
|
|
|
///
|
|
|
void clang::InitializePreprocessor(
|
|
|
Preprocessor &PP, const PreprocessorOptions &InitOpts,
|
|
|
const PCHContainerReader &PCHContainerRdr,
|
|
|
const FrontendOptions &FEOpts) {
|
|
|
const LangOptions &LangOpts = PP.getLangOpts();
|
|
|
std::string PredefineBuffer;
|
|
|
PredefineBuffer.reserve(4080);
|
|
|
llvm::raw_string_ostream Predefines(PredefineBuffer);
|
|
|
MacroBuilder Builder(Predefines);
|
|
|
|
|
|
// Emit line markers for various builtin sections of the file. We don't do
|
|
|
// this in asm preprocessor mode, because "# 4" is not a line marker directive
|
|
|
// in this mode.
|
|
|
if (!PP.getLangOpts().AsmPreprocessor)
|
|
|
Builder.append("# 1 \"<built-in>\" 3");
|
|
|
|
|
|
// Install things like __POWERPC__, __GNUC__, etc into the macro table.
|
|
|
if (InitOpts.UsePredefines) {
|
|
|
// FIXME: This will create multiple definitions for most of the predefined
|
|
|
// macros. This is not the right way to handle this.
|
|
|
if ((LangOpts.CUDA || LangOpts.OpenMPIsDevice || LangOpts.SYCLIsDevice) &&
|
|
|
PP.getAuxTargetInfo())
|
|
|
InitializePredefinedMacros(*PP.getAuxTargetInfo(), LangOpts, FEOpts,
|
|
|
PP.getPreprocessorOpts(), Builder);
|
|
|
|
|
|
InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts,
|
|
|
PP.getPreprocessorOpts(), Builder);
|
|
|
|
|
|
// Install definitions to make Objective-C++ ARC work well with various
|
|
|
// C++ Standard Library implementations.
|
|
|
if (LangOpts.ObjC && LangOpts.CPlusPlus &&
|
|
|
(LangOpts.ObjCAutoRefCount || LangOpts.ObjCWeak)) {
|
|
|
switch (InitOpts.ObjCXXARCStandardLibrary) {
|
|
|
case ARCXX_nolib:
|
|
|
case ARCXX_libcxx:
|
|
|
break;
|
|
|
|
|
|
case ARCXX_libstdcxx:
|
|
|
AddObjCXXARCLibstdcxxDefines(LangOpts, Builder);
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Even with predefines off, some macros are still predefined.
|
|
|
// These should all be defined in the preprocessor according to the
|
|
|
// current language configuration.
|
|
|
InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(),
|
|
|
FEOpts, Builder);
|
|
|
|
|
|
// Add on the predefines from the driver. Wrap in a #line directive to report
|
|
|
// that they come from the command line.
|
|
|
if (!PP.getLangOpts().AsmPreprocessor)
|
|
|
Builder.append("# 1 \"<command line>\" 1");
|
|
|
|
|
|
// Process #define's and #undef's in the order they are given.
|
|
|
for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
|
|
|
if (InitOpts.Macros[i].second) // isUndef
|
|
|
Builder.undefineMacro(InitOpts.Macros[i].first);
|
|
|
else
|
|
|
DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
|
|
|
PP.getDiagnostics());
|
|
|
}
|
|
|
|
|
|
// Exit the command line and go back to <built-in> (2 is LC_LEAVE).
|
|
|
if (!PP.getLangOpts().AsmPreprocessor)
|
|
|
Builder.append("# 1 \"<built-in>\" 2");
|
|
|
|
|
|
// If -imacros are specified, include them now. These are processed before
|
|
|
// any -include directives.
|
|
|
for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
|
|
|
AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]);
|
|
|
|
|
|
// Process -include-pch/-include-pth directives.
|
|
|
if (!InitOpts.ImplicitPCHInclude.empty())
|
|
|
AddImplicitIncludePCH(Builder, PP, PCHContainerRdr,
|
|
|
InitOpts.ImplicitPCHInclude);
|
|
|
|
|
|
// Process -include directives.
|
|
|
for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
|
|
|
const std::string &Path = InitOpts.Includes[i];
|
|
|
AddImplicitInclude(Builder, Path);
|
|
|
}
|
|
|
|
|
|
// Instruct the preprocessor to skip the preamble.
|
|
|
PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first,
|
|
|
InitOpts.PrecompiledPreambleBytes.second);
|
|
|
|
|
|
// Copy PredefinedBuffer into the Preprocessor.
|
|
|
PP.setPredefines(Predefines.str());
|
|
|
}
|
