mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-04 11:46:07 +00:00
a8bef8865e
This is a C++ feature that allows the use of `_` to declare multiple variable of that name in the same scope; these variables can then not be referred to. In addition, while P2169 does not extend to parameter declarations, we stop warning on unused parameters of that name, for consistency. The feature is backported to all C++ language modes. Reviewed By: #clang-language-wg, aaron.ballman Differential Revision: https://reviews.llvm.org/D153536
1427 lines
60 KiB
C++
1427 lines
60 KiB
C++
//===--- InitPreprocessor.cpp - PP initialization code. ---------*- C++ -*-===//
|
||
//
|
||
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
// See https://llvm.org/LICENSE.txt for license information.
|
||
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
//
|
||
//===----------------------------------------------------------------------===//
|
||
//
|
||
// This file implements the clang::InitializePreprocessor function.
|
||
//
|
||
//===----------------------------------------------------------------------===//
|
||
|
||
#include "clang/Basic/FileManager.h"
|
||
#include "clang/Basic/HLSLRuntime.h"
|
||
#include "clang/Basic/MacroBuilder.h"
|
||
#include "clang/Basic/SourceManager.h"
|
||
#include "clang/Basic/SyncScope.h"
|
||
#include "clang/Basic/TargetInfo.h"
|
||
#include "clang/Basic/Version.h"
|
||
#include "clang/Frontend/FrontendDiagnostic.h"
|
||
#include "clang/Frontend/FrontendOptions.h"
|
||
#include "clang/Frontend/Utils.h"
|
||
#include "clang/Lex/HeaderSearch.h"
|
||
#include "clang/Lex/Preprocessor.h"
|
||
#include "clang/Lex/PreprocessorOptions.h"
|
||
#include "clang/Serialization/ASTReader.h"
|
||
#include "llvm/ADT/APFloat.h"
|
||
#include "llvm/IR/DataLayout.h"
|
||
#include "llvm/IR/DerivedTypes.h"
|
||
using namespace clang;
|
||
|
||
static bool MacroBodyEndsInBackslash(StringRef MacroBody) {
|
||
while (!MacroBody.empty() && isWhitespace(MacroBody.back()))
|
||
MacroBody = MacroBody.drop_back();
|
||
return !MacroBody.empty() && MacroBody.back() == '\\';
|
||
}
|
||
|
||
// Append a #define line to Buf for Macro. Macro should be of the form XXX,
|
||
// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
|
||
// "#define XXX Y z W". To get a #define with no value, use "XXX=".
|
||
static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro,
|
||
DiagnosticsEngine &Diags) {
|
||
std::pair<StringRef, StringRef> MacroPair = Macro.split('=');
|
||
StringRef MacroName = MacroPair.first;
|
||
StringRef MacroBody = MacroPair.second;
|
||
if (MacroName.size() != Macro.size()) {
|
||
// Per GCC -D semantics, the macro ends at \n if it exists.
|
||
StringRef::size_type End = MacroBody.find_first_of("\n\r");
|
||
if (End != StringRef::npos)
|
||
Diags.Report(diag::warn_fe_macro_contains_embedded_newline)
|
||
<< MacroName;
|
||
MacroBody = MacroBody.substr(0, End);
|
||
// We handle macro bodies which end in a backslash by appending an extra
|
||
// backslash+newline. This makes sure we don't accidentally treat the
|
||
// backslash as a line continuation marker.
|
||
if (MacroBodyEndsInBackslash(MacroBody))
|
||
Builder.defineMacro(MacroName, Twine(MacroBody) + "\\\n");
|
||
else
|
||
Builder.defineMacro(MacroName, MacroBody);
|
||
} else {
|
||
// Push "macroname 1".
|
||
Builder.defineMacro(Macro);
|
||
}
|
||
}
|
||
|
||
/// AddImplicitInclude - Add an implicit \#include of the specified file to the
|
||
/// predefines buffer.
|
||
/// As these includes are generated by -include arguments the header search
|
||
/// logic is going to search relatively to the current working directory.
|
||
static void AddImplicitInclude(MacroBuilder &Builder, StringRef File) {
|
||
Builder.append(Twine("#include \"") + File + "\"");
|
||
}
|
||
|
||
static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) {
|
||
Builder.append(Twine("#__include_macros \"") + File + "\"");
|
||
// Marker token to stop the __include_macros fetch loop.
|
||
Builder.append("##"); // ##?
|
||
}
|
||
|
||
/// Add an implicit \#include using the original file used to generate
|
||
/// a PCH file.
|
||
static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP,
|
||
const PCHContainerReader &PCHContainerRdr,
|
||
StringRef ImplicitIncludePCH) {
|
||
std::string OriginalFile = ASTReader::getOriginalSourceFile(
|
||
std::string(ImplicitIncludePCH), PP.getFileManager(), PCHContainerRdr,
|
||
PP.getDiagnostics());
|
||
if (OriginalFile.empty())
|
||
return;
|
||
|
||
AddImplicitInclude(Builder, OriginalFile);
|
||
}
|
||
|
||
/// PickFP - This is used to pick a value based on the FP semantics of the
|
||
/// specified FP model.
|
||
template <typename T>
|
||
static T PickFP(const llvm::fltSemantics *Sem, T IEEEHalfVal, T IEEESingleVal,
|
||
T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
|
||
T IEEEQuadVal) {
|
||
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEhalf())
|
||
return IEEEHalfVal;
|
||
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle())
|
||
return IEEESingleVal;
|
||
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble())
|
||
return IEEEDoubleVal;
|
||
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended())
|
||
return X87DoubleExtendedVal;
|
||
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble())
|
||
return PPCDoubleDoubleVal;
|
||
assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad());
|
||
return IEEEQuadVal;
|
||
}
|
||
|
||
static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
|
||
const llvm::fltSemantics *Sem, StringRef Ext) {
|
||
const char *DenormMin, *Epsilon, *Max, *Min;
|
||
DenormMin = PickFP(Sem, "5.9604644775390625e-8", "1.40129846e-45",
|
||
"4.9406564584124654e-324", "3.64519953188247460253e-4951",
|
||
"4.94065645841246544176568792868221e-324",
|
||
"6.47517511943802511092443895822764655e-4966");
|
||
int Digits = PickFP(Sem, 3, 6, 15, 18, 31, 33);
|
||
int DecimalDigits = PickFP(Sem, 5, 9, 17, 21, 33, 36);
|
||
Epsilon = PickFP(Sem, "9.765625e-4", "1.19209290e-7",
|
||
"2.2204460492503131e-16", "1.08420217248550443401e-19",
|
||
"4.94065645841246544176568792868221e-324",
|
||
"1.92592994438723585305597794258492732e-34");
|
||
int MantissaDigits = PickFP(Sem, 11, 24, 53, 64, 106, 113);
|
||
int Min10Exp = PickFP(Sem, -4, -37, -307, -4931, -291, -4931);
|
||
int Max10Exp = PickFP(Sem, 4, 38, 308, 4932, 308, 4932);
|
||
int MinExp = PickFP(Sem, -13, -125, -1021, -16381, -968, -16381);
|
||
int MaxExp = PickFP(Sem, 16, 128, 1024, 16384, 1024, 16384);
|
||
Min = PickFP(Sem, "6.103515625e-5", "1.17549435e-38", "2.2250738585072014e-308",
|
||
"3.36210314311209350626e-4932",
|
||
"2.00416836000897277799610805135016e-292",
|
||
"3.36210314311209350626267781732175260e-4932");
|
||
Max = PickFP(Sem, "6.5504e+4", "3.40282347e+38", "1.7976931348623157e+308",
|
||
"1.18973149535723176502e+4932",
|
||
"1.79769313486231580793728971405301e+308",
|
||
"1.18973149535723176508575932662800702e+4932");
|
||
|
||
SmallString<32> DefPrefix;
|
||
DefPrefix = "__";
|
||
DefPrefix += Prefix;
|
||
DefPrefix += "_";
|
||
|
||
Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext);
|
||
Builder.defineMacro(DefPrefix + "HAS_DENORM__");
|
||
Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits));
|
||
Builder.defineMacro(DefPrefix + "DECIMAL_DIG__", Twine(DecimalDigits));
|
||
Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext);
|
||
Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
|
||
Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
|
||
Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits));
|
||
|
||
Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp));
|
||
Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp));
|
||
Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext);
|
||
|
||
Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")");
|
||
Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")");
|
||
Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext);
|
||
}
|
||
|
||
|
||
/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro
|
||
/// named MacroName with the max value for a type with width 'TypeWidth' a
|
||
/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL).
|
||
static void DefineTypeSize(const Twine &MacroName, unsigned TypeWidth,
|
||
StringRef ValSuffix, bool isSigned,
|
||
MacroBuilder &Builder) {
|
||
llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth)
|
||
: llvm::APInt::getMaxValue(TypeWidth);
|
||
Builder.defineMacro(MacroName, toString(MaxVal, 10, isSigned) + ValSuffix);
|
||
}
|
||
|
||
/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
|
||
/// the width, suffix, and signedness of the given type
|
||
static void DefineTypeSize(const Twine &MacroName, TargetInfo::IntType Ty,
|
||
const TargetInfo &TI, MacroBuilder &Builder) {
|
||
DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
|
||
TI.isTypeSigned(Ty), Builder);
|
||
}
|
||
|
||
static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty,
|
||
const TargetInfo &TI, MacroBuilder &Builder) {
|
||
bool IsSigned = TI.isTypeSigned(Ty);
|
||
StringRef FmtModifier = TI.getTypeFormatModifier(Ty);
|
||
for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) {
|
||
Builder.defineMacro(Prefix + "_FMT" + Twine(*Fmt) + "__",
|
||
Twine("\"") + FmtModifier + Twine(*Fmt) + "\"");
|
||
}
|
||
}
|
||
|
||
static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
|
||
MacroBuilder &Builder) {
|
||
Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
|
||
}
|
||
|
||
static void DefineTypeWidth(const Twine &MacroName, TargetInfo::IntType Ty,
|
||
const TargetInfo &TI, MacroBuilder &Builder) {
|
||
Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty)));
|
||
}
|
||
|
||
static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth,
|
||
const TargetInfo &TI, MacroBuilder &Builder) {
|
||
Builder.defineMacro(MacroName,
|
||
Twine(BitWidth / TI.getCharWidth()));
|
||
}
|
||
|
||
// This will generate a macro based on the prefix with `_MAX__` as the suffix
|
||
// for the max value representable for the type, and a macro with a `_WIDTH__`
|
||
// suffix for the width of the type.
|
||
static void DefineTypeSizeAndWidth(const Twine &Prefix, TargetInfo::IntType Ty,
|
||
const TargetInfo &TI,
|
||
MacroBuilder &Builder) {
|
||
DefineTypeSize(Prefix + "_MAX__", Ty, TI, Builder);
|
||
DefineTypeWidth(Prefix + "_WIDTH__", Ty, TI, Builder);
|
||
}
|
||
|
||
static void DefineExactWidthIntType(TargetInfo::IntType Ty,
|
||
const TargetInfo &TI,
|
||
MacroBuilder &Builder) {
|
||
int TypeWidth = TI.getTypeWidth(Ty);
|
||
bool IsSigned = TI.isTypeSigned(Ty);
|
||
|
||
// Use the target specified int64 type, when appropriate, so that [u]int64_t
|
||
// ends up being defined in terms of the correct type.
|
||
if (TypeWidth == 64)
|
||
Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
|
||
|
||
// Use the target specified int16 type when appropriate. Some MCU targets
|
||
// (such as AVR) have definition of [u]int16_t to [un]signed int.
|
||
if (TypeWidth == 16)
|
||
Ty = IsSigned ? TI.getInt16Type() : TI.getUInt16Type();
|
||
|
||
const char *Prefix = IsSigned ? "__INT" : "__UINT";
|
||
|
||
DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
|
||
DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
|
||
|
||
StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty));
|
||
Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
|
||
}
|
||
|
||
static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty,
|
||
const TargetInfo &TI,
|
||
MacroBuilder &Builder) {
|
||
int TypeWidth = TI.getTypeWidth(Ty);
|
||
bool IsSigned = TI.isTypeSigned(Ty);
|
||
|
||
// Use the target specified int64 type, when appropriate, so that [u]int64_t
|
||
// ends up being defined in terms of the correct type.
|
||
if (TypeWidth == 64)
|
||
Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
|
||
|
||
// We don't need to define a _WIDTH macro for the exact-width types because
|
||
// we already know the width.
|
||
const char *Prefix = IsSigned ? "__INT" : "__UINT";
|
||
DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
|
||
}
|
||
|
||
static void DefineLeastWidthIntType(unsigned TypeWidth, bool IsSigned,
|
||
const TargetInfo &TI,
|
||
MacroBuilder &Builder) {
|
||
TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
|
||
if (Ty == TargetInfo::NoInt)
|
||
return;
|
||
|
||
const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST";
|
||
DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
|
||
// We only want the *_WIDTH macro for the signed types to avoid too many
|
||
// predefined macros (the unsigned width and the signed width are identical.)
|
||
if (IsSigned)
|
||
DefineTypeSizeAndWidth(Prefix + Twine(TypeWidth), Ty, TI, Builder);
|
||
else
|
||
DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
|
||
DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
|
||
}
|
||
|
||
static void DefineFastIntType(unsigned TypeWidth, bool IsSigned,
|
||
const TargetInfo &TI, MacroBuilder &Builder) {
|
||
// stdint.h currently defines the fast int types as equivalent to the least
|
||
// types.
|
||
TargetInfo::IntType Ty = TI.getLeastIntTypeByWidth(TypeWidth, IsSigned);
|
||
if (Ty == TargetInfo::NoInt)
|
||
return;
|
||
|
||
const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST";
|
||
DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
|
||
// We only want the *_WIDTH macro for the signed types to avoid too many
|
||
// predefined macros (the unsigned width and the signed width are identical.)
|
||
if (IsSigned)
|
||
DefineTypeSizeAndWidth(Prefix + Twine(TypeWidth), Ty, TI, Builder);
|
||
else
|
||
DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
|
||
DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
|
||
}
|
||
|
||
|
||
/// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with
|
||
/// the specified properties.
|
||
static const char *getLockFreeValue(unsigned TypeWidth, const TargetInfo &TI) {
|
||
// Fully-aligned, power-of-2 sizes no larger than the inline
|
||
// width will be inlined as lock-free operations.
|
||
// Note: we do not need to check alignment since _Atomic(T) is always
|
||
// appropriately-aligned in clang.
|
||
if (TI.hasBuiltinAtomic(TypeWidth, TypeWidth))
|
||
return "2"; // "always lock free"
|
||
// We cannot be certain what operations the lib calls might be
|
||
// able to implement as lock-free on future processors.
|
||
return "1"; // "sometimes lock free"
|
||
}
|
||
|
||
/// Add definitions required for a smooth interaction between
|
||
/// Objective-C++ automated reference counting and libstdc++ (4.2).
|
||
static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts,
|
||
MacroBuilder &Builder) {
|
||
Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR");
|
||
|
||
std::string Result;
|
||
{
|
||
// Provide specializations for the __is_scalar type trait so that
|
||
// lifetime-qualified objects are not considered "scalar" types, which
|
||
// libstdc++ uses as an indicator of the presence of trivial copy, assign,
|
||
// default-construct, and destruct semantics (none of which hold for
|
||
// lifetime-qualified objects in ARC).
|
||
llvm::raw_string_ostream Out(Result);
|
||
|
||
Out << "namespace std {\n"
|
||
<< "\n"
|
||
<< "struct __true_type;\n"
|
||
<< "struct __false_type;\n"
|
||
<< "\n";
|
||
|
||
Out << "template<typename _Tp> struct __is_scalar;\n"
|
||
<< "\n";
|
||
|
||
if (LangOpts.ObjCAutoRefCount) {
|
||
Out << "template<typename _Tp>\n"
|
||
<< "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n"
|
||
<< " enum { __value = 0 };\n"
|
||
<< " typedef __false_type __type;\n"
|
||
<< "};\n"
|
||
<< "\n";
|
||
}
|
||
|
||
if (LangOpts.ObjCWeak) {
|
||
Out << "template<typename _Tp>\n"
|
||
<< "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n"
|
||
<< " enum { __value = 0 };\n"
|
||
<< " typedef __false_type __type;\n"
|
||
<< "};\n"
|
||
<< "\n";
|
||
}
|
||
|
||
if (LangOpts.ObjCAutoRefCount) {
|
||
Out << "template<typename _Tp>\n"
|
||
<< "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))"
|
||
<< " _Tp> {\n"
|
||
<< " enum { __value = 0 };\n"
|
||
<< " typedef __false_type __type;\n"
|
||
<< "};\n"
|
||
<< "\n";
|
||
}
|
||
|
||
Out << "}\n";
|
||
}
|
||
Builder.append(Result);
|
||
}
|
||
|
||
static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
|
||
const LangOptions &LangOpts,
|
||
const FrontendOptions &FEOpts,
|
||
MacroBuilder &Builder) {
|
||
if (LangOpts.HLSL) {
|
||
Builder.defineMacro("__hlsl_clang");
|
||
// HLSL Version
|
||
Builder.defineMacro("__HLSL_VERSION",
|
||
Twine((unsigned)LangOpts.getHLSLVersion()));
|
||
|
||
if (LangOpts.NativeHalfType)
|
||
Builder.defineMacro("__HLSL_ENABLE_16_BIT",
|
||
Twine((unsigned)LangOpts.getHLSLVersion()));
|
||
|
||
// Shader target information
|
||
// "enums" for shader stages
|
||
Builder.defineMacro("__SHADER_STAGE_VERTEX",
|
||
Twine((uint32_t)ShaderStage::Vertex));
|
||
Builder.defineMacro("__SHADER_STAGE_PIXEL",
|
||
Twine((uint32_t)ShaderStage::Pixel));
|
||
Builder.defineMacro("__SHADER_STAGE_GEOMETRY",
|
||
Twine((uint32_t)ShaderStage::Geometry));
|
||
Builder.defineMacro("__SHADER_STAGE_HULL",
|
||
Twine((uint32_t)ShaderStage::Hull));
|
||
Builder.defineMacro("__SHADER_STAGE_DOMAIN",
|
||
Twine((uint32_t)ShaderStage::Domain));
|
||
Builder.defineMacro("__SHADER_STAGE_COMPUTE",
|
||
Twine((uint32_t)ShaderStage::Compute));
|
||
Builder.defineMacro("__SHADER_STAGE_AMPLIFICATION",
|
||
Twine((uint32_t)ShaderStage::Amplification));
|
||
Builder.defineMacro("__SHADER_STAGE_MESH",
|
||
Twine((uint32_t)ShaderStage::Mesh));
|
||
Builder.defineMacro("__SHADER_STAGE_LIBRARY",
|
||
Twine((uint32_t)ShaderStage::Library));
|
||
// The current shader stage itself
|
||
uint32_t StageInteger = static_cast<uint32_t>(
|
||
hlsl::getStageFromEnvironment(TI.getTriple().getEnvironment()));
|
||
|
||
Builder.defineMacro("__SHADER_TARGET_STAGE", Twine(StageInteger));
|
||
// Add target versions
|
||
if (TI.getTriple().getOS() == llvm::Triple::ShaderModel) {
|
||
VersionTuple Version = TI.getTriple().getOSVersion();
|
||
Builder.defineMacro("__SHADER_TARGET_MAJOR", Twine(Version.getMajor()));
|
||
unsigned Minor = Version.getMinor().value_or(0);
|
||
Builder.defineMacro("__SHADER_TARGET_MINOR", Twine(Minor));
|
||
}
|
||
return;
|
||
}
|
||
// C++ [cpp.predefined]p1:
|
||
// The following macro names shall be defined by the implementation:
|
||
|
||
// -- __STDC__
|
||
// [C++] Whether __STDC__ is predefined and if so, what its value is,
|
||
// are implementation-defined.
|
||
// (Removed in C++20.)
|
||
if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP)
|
||
Builder.defineMacro("__STDC__");
|
||
// -- __STDC_HOSTED__
|
||
// The integer literal 1 if the implementation is a hosted
|
||
// implementation or the integer literal 0 if it is not.
|
||
if (LangOpts.Freestanding)
|
||
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) {
|
||
// FIXME: Use correct value for C23.
|
||
if (LangOpts.C2x)
|
||
Builder.defineMacro("__STDC_VERSION__", "202000L");
|
||
else 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
|
||
if (LangOpts.CPlusPlus26)
|
||
// FIXME: Use correct value for C++26.
|
||
Builder.defineMacro("__cplusplus", "202400L");
|
||
else if (LangOpts.CPlusPlus23)
|
||
Builder.defineMacro("__cplusplus", "202302L");
|
||
// [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) {
|
||
switch (LangOpts.OpenCLCPlusPlusVersion) {
|
||
case 100:
|
||
Builder.defineMacro("__OPENCL_CPP_VERSION__", "100");
|
||
break;
|
||
case 202100:
|
||
Builder.defineMacro("__OPENCL_CPP_VERSION__", "202100");
|
||
break;
|
||
default:
|
||
llvm_unreachable("Unsupported C++ version for OpenCL");
|
||
}
|
||
Builder.defineMacro("__CL_CPP_VERSION_1_0__", "100");
|
||
Builder.defineMacro("__CL_CPP_VERSION_2021__", "202100");
|
||
} 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.SYCLIsDevice || LangOpts.SYCLIsHost) {
|
||
// SYCL Version is set to a value when building SYCL applications
|
||
if (LangOpts.getSYCLVersion() == LangOptions::SYCL_2017)
|
||
Builder.defineMacro("CL_SYCL_LANGUAGE_VERSION", "121");
|
||
else if (LangOpts.getSYCLVersion() == LangOptions::SYCL_2020)
|
||
Builder.defineMacro("SYCL_LANGUAGE_VERSION", "202001");
|
||
}
|
||
|
||
// Not "standard" per se, but available even with the -undef flag.
|
||
if (LangOpts.AsmPreprocessor)
|
||
Builder.defineMacro("__ASSEMBLER__");
|
||
if (LangOpts.CUDA) {
|
||
if (LangOpts.GPURelocatableDeviceCode)
|
||
Builder.defineMacro("__CLANG_RDC__");
|
||
if (!LangOpts.HIP)
|
||
Builder.defineMacro("__CUDA__");
|
||
if (LangOpts.GPUDefaultStream ==
|
||
LangOptions::GPUDefaultStreamKind::PerThread)
|
||
Builder.defineMacro("CUDA_API_PER_THREAD_DEFAULT_STREAM");
|
||
}
|
||
if (LangOpts.HIP) {
|
||
Builder.defineMacro("__HIP__");
|
||
Builder.defineMacro("__HIPCC__");
|
||
Builder.defineMacro("__HIP_MEMORY_SCOPE_SINGLETHREAD", "1");
|
||
Builder.defineMacro("__HIP_MEMORY_SCOPE_WAVEFRONT", "2");
|
||
Builder.defineMacro("__HIP_MEMORY_SCOPE_WORKGROUP", "3");
|
||
Builder.defineMacro("__HIP_MEMORY_SCOPE_AGENT", "4");
|
||
Builder.defineMacro("__HIP_MEMORY_SCOPE_SYSTEM", "5");
|
||
if (LangOpts.CUDAIsDevice) {
|
||
Builder.defineMacro("__HIP_DEVICE_COMPILE__");
|
||
if (!TI.hasHIPImageSupport()) {
|
||
Builder.defineMacro("__HIP_NO_IMAGE_SUPPORT__", "1");
|
||
// Deprecated.
|
||
Builder.defineMacro("__HIP_NO_IMAGE_SUPPORT", "1");
|
||
}
|
||
}
|
||
if (LangOpts.GPUDefaultStream ==
|
||
LangOptions::GPUDefaultStreamKind::PerThread) {
|
||
Builder.defineMacro("__HIP_API_PER_THREAD_DEFAULT_STREAM__");
|
||
// Deprecated.
|
||
Builder.defineMacro("HIP_API_PER_THREAD_DEFAULT_STREAM");
|
||
}
|
||
}
|
||
}
|
||
|
||
/// 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.CPlusPlus26 ? "202306L"
|
||
: LangOpts.CPlusPlus23 ? "202211L"
|
||
: 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.CPlusPlus26 ? "202306L"
|
||
: 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");
|
||
|
||
// P0848 is implemented, but we're still waiting for other concepts
|
||
// issues to be addressed before bumping __cpp_concepts up to 202002L.
|
||
// Refer to the discussion of this at https://reviews.llvm.org/D128619.
|
||
Builder.defineMacro("__cpp_concepts", "201907L");
|
||
Builder.defineMacro("__cpp_conditional_explicit", "201806L");
|
||
Builder.defineMacro("__cpp_consteval", "202211L");
|
||
Builder.defineMacro("__cpp_constexpr_dynamic_alloc", "201907L");
|
||
Builder.defineMacro("__cpp_constinit", "201907L");
|
||
Builder.defineMacro("__cpp_impl_coroutine", "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");
|
||
}
|
||
// C++23 features.
|
||
if (LangOpts.CPlusPlus23) {
|
||
Builder.defineMacro("__cpp_implicit_move", "202011L");
|
||
Builder.defineMacro("__cpp_size_t_suffix", "202011L");
|
||
Builder.defineMacro("__cpp_if_consteval", "202106L");
|
||
Builder.defineMacro("__cpp_multidimensional_subscript", "202211L");
|
||
}
|
||
|
||
// We provide those C++23 features as extensions in earlier language modes, so
|
||
// we also define their feature test macros.
|
||
if (LangOpts.CPlusPlus11)
|
||
Builder.defineMacro("__cpp_static_call_operator", "202207L");
|
||
Builder.defineMacro("__cpp_named_character_escapes", "202207L");
|
||
Builder.defineMacro("__cpp_placeholder_variables", "202306L");
|
||
|
||
if (LangOpts.Char8)
|
||
Builder.defineMacro("__cpp_char8_t", "202207L");
|
||
Builder.defineMacro("__cpp_impl_destroying_delete", "201806L");
|
||
}
|
||
|
||
/// InitializeOpenCLFeatureTestMacros - Define OpenCL macros based on target
|
||
/// settings and language version
|
||
void InitializeOpenCLFeatureTestMacros(const TargetInfo &TI,
|
||
const LangOptions &Opts,
|
||
MacroBuilder &Builder) {
|
||
const llvm::StringMap<bool> &OpenCLFeaturesMap = TI.getSupportedOpenCLOpts();
|
||
// FIXME: OpenCL options which affect language semantics/syntax
|
||
// should be moved into LangOptions.
|
||
auto defineOpenCLExtMacro = [&](llvm::StringRef Name, auto... OptArgs) {
|
||
// Check if extension is supported by target and is available in this
|
||
// OpenCL version
|
||
if (TI.hasFeatureEnabled(OpenCLFeaturesMap, Name) &&
|
||
OpenCLOptions::isOpenCLOptionAvailableIn(Opts, OptArgs...))
|
||
Builder.defineMacro(Name);
|
||
};
|
||
#define OPENCL_GENERIC_EXTENSION(Ext, ...) \
|
||
defineOpenCLExtMacro(#Ext, __VA_ARGS__);
|
||
#include "clang/Basic/OpenCLExtensions.def"
|
||
|
||
// Assume compiling for FULL profile
|
||
Builder.defineMacro("__opencl_c_int64");
|
||
}
|
||
|
||
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");
|
||
|
||
// Define macros for floating-point data classes, used in __builtin_isfpclass.
|
||
Builder.defineMacro("__FPCLASS_SNAN", "0x0001");
|
||
Builder.defineMacro("__FPCLASS_QNAN", "0x0002");
|
||
Builder.defineMacro("__FPCLASS_NEGINF", "0x0004");
|
||
Builder.defineMacro("__FPCLASS_NEGNORMAL", "0x0008");
|
||
Builder.defineMacro("__FPCLASS_NEGSUBNORMAL", "0x0010");
|
||
Builder.defineMacro("__FPCLASS_NEGZERO", "0x0020");
|
||
Builder.defineMacro("__FPCLASS_POSZERO", "0x0040");
|
||
Builder.defineMacro("__FPCLASS_POSSUBNORMAL", "0x0080");
|
||
Builder.defineMacro("__FPCLASS_POSNORMAL", "0x0100");
|
||
Builder.defineMacro("__FPCLASS_POSINF", "0x0200");
|
||
|
||
// 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().value_or(0))));
|
||
}
|
||
|
||
if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) {
|
||
VersionTuple tuple = LangOpts.ObjCRuntime.getVersion();
|
||
unsigned minor = tuple.getMinor().value_or(0);
|
||
unsigned subminor = tuple.getSubminor().value_or(0);
|
||
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.hasSjLjExceptions())
|
||
Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
|
||
else if (LangOpts.hasSEHExceptions())
|
||
Builder.defineMacro("__SEH__");
|
||
else if (LangOpts.hasDWARFExceptions() &&
|
||
(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");
|
||
}
|
||
}
|
||
|
||
// Macros to help identify the narrow and wide character sets
|
||
// FIXME: clang currently ignores -fexec-charset=. If this changes,
|
||
// then this may need to be updated.
|
||
Builder.defineMacro("__clang_literal_encoding__", "\"UTF-8\"");
|
||
if (TI.getTypeWidth(TI.getWCharType()) >= 32) {
|
||
// FIXME: 32-bit wchar_t signals UTF-32. This may change
|
||
// if -fwide-exec-charset= is ever supported.
|
||
Builder.defineMacro("__clang_wide_literal_encoding__", "\"UTF-32\"");
|
||
} else {
|
||
// FIXME: Less-than 32-bit wchar_t generally means UTF-16
|
||
// (e.g., Windows, 32-bit IBM). This may need to be
|
||
// updated if -fwide-exec-charset= is ever supported.
|
||
Builder.defineMacro("__clang_wide_literal_encoding__", "\"UTF-16\"");
|
||
}
|
||
|
||
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(LangAS::Default) == 64 && TI.getLongWidth() == 64 &&
|
||
TI.getIntWidth() == 32) {
|
||
Builder.defineMacro("_LP64");
|
||
Builder.defineMacro("__LP64__");
|
||
}
|
||
|
||
if (TI.getPointerWidth(LangAS::Default) == 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()));
|
||
|
||
Builder.defineMacro("__BOOL_WIDTH__", Twine(TI.getBoolWidth()));
|
||
Builder.defineMacro("__SHRT_WIDTH__", Twine(TI.getShortWidth()));
|
||
Builder.defineMacro("__INT_WIDTH__", Twine(TI.getIntWidth()));
|
||
Builder.defineMacro("__LONG_WIDTH__", Twine(TI.getLongWidth()));
|
||
Builder.defineMacro("__LLONG_WIDTH__", Twine(TI.getLongLongWidth()));
|
||
|
||
size_t BitIntMaxWidth = TI.getMaxBitIntWidth();
|
||
assert(BitIntMaxWidth <= llvm::IntegerType::MAX_INT_BITS &&
|
||
"Target defined a max bit width larger than LLVM can support!");
|
||
assert(BitIntMaxWidth >= TI.getLongLongWidth() &&
|
||
"Target defined a max bit width smaller than the C standard allows!");
|
||
Builder.defineMacro("__BITINT_MAXWIDTH__", Twine(BitIntMaxWidth));
|
||
|
||
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);
|
||
DefineTypeSizeAndWidth("__WCHAR", TI.getWCharType(), TI, Builder);
|
||
DefineTypeSizeAndWidth("__WINT", TI.getWIntType(), TI, Builder);
|
||
DefineTypeSizeAndWidth("__INTMAX", TI.getIntMaxType(), TI, Builder);
|
||
DefineTypeSizeAndWidth("__SIZE", TI.getSizeType(), TI, Builder);
|
||
|
||
DefineTypeSizeAndWidth("__UINTMAX", TI.getUIntMaxType(), TI, Builder);
|
||
DefineTypeSizeAndWidth("__PTRDIFF", TI.getPtrDiffType(LangAS::Default), TI,
|
||
Builder);
|
||
DefineTypeSizeAndWidth("__INTPTR", TI.getIntPtrType(), TI, Builder);
|
||
DefineTypeSizeAndWidth("__UINTPTR", 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(LangAS::Default),
|
||
TI, Builder);
|
||
DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder);
|
||
DefineTypeSizeof("__SIZEOF_PTRDIFF_T__",
|
||
TI.getTypeWidth(TI.getPtrDiffType(LangAS::Default)), 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()));
|
||
DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(LangAS::Default), Builder);
|
||
DefineFmt("__PTRDIFF", TI.getPtrDiffType(LangAS::Default), TI, Builder);
|
||
DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
|
||
DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder);
|
||
DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
|
||
DefineFmt("__SIZE", TI.getSizeType(), TI, Builder);
|
||
DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
|
||
DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
|
||
DefineTypeSizeAndWidth("__SIG_ATOMIC", TI.getSigAtomicType(), TI, Builder);
|
||
DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
|
||
DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
|
||
|
||
DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder);
|
||
DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder);
|
||
|
||
// The C standard requires the width of uintptr_t and intptr_t to be the same,
|
||
// per 7.20.2.4p1. Same for intmax_t and uintmax_t, per 7.20.2.5p1.
|
||
assert(TI.getTypeWidth(TI.getUIntPtrType()) ==
|
||
TI.getTypeWidth(TI.getIntPtrType()) &&
|
||
"uintptr_t and intptr_t have different widths?");
|
||
assert(TI.getTypeWidth(TI.getUIntMaxType()) ==
|
||
TI.getTypeWidth(TI.getIntMaxType()) &&
|
||
"uintmax_t and intmax_t have different widths?");
|
||
|
||
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(LangAS::Default)));
|
||
|
||
// 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);
|
||
|
||
Builder.defineMacro("__USER_LABEL_PREFIX__", TI.getUserLabelPrefix());
|
||
|
||
if (!LangOpts.MathErrno)
|
||
Builder.defineMacro("__NO_MATH_ERRNO__");
|
||
|
||
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.
|
||
#define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
|
||
Builder.defineMacro(Prefix + #TYPE "_LOCK_FREE", \
|
||
getLockFreeValue(TI.get##Type##Width(), TI));
|
||
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(LangAS::Default), TI));
|
||
#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_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;
|
||
case 50:
|
||
Builder.defineMacro("_OPENMP", "201811");
|
||
break;
|
||
case 52:
|
||
Builder.defineMacro("_OPENMP", "202111");
|
||
break;
|
||
default: // case 51:
|
||
// Default version is OpenMP 5.1
|
||
Builder.defineMacro("_OPENMP", "202011");
|
||
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/HIP header wrapper, which in turn
|
||
// informs the proper CUDA/HIP headers of this choice.
|
||
if (LangOpts.GPUDeviceApproxTranscendentals)
|
||
Builder.defineMacro("__CLANG_GPU_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) {
|
||
InitializeOpenCLFeatureTestMacros(TI, LangOpts, Builder);
|
||
|
||
if (TI.getTriple().isSPIR() || TI.getTriple().isSPIRV())
|
||
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");
|
||
}
|
||
|
||
// ELF targets define __ELF__
|
||
if (TI.getTriple().isOSBinFormatELF())
|
||
Builder.defineMacro("__ELF__");
|
||
|
||
// Get other target #defines.
|
||
TI.getTargetDefines(LangOpts, Builder);
|
||
}
|
||
|
||
/// InitializePreprocessor - Initialize the preprocessor getting it and the
|
||
/// environment ready to process a single file.
|
||
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. The 3 here
|
||
// marks <built-in> as being a system header, which suppresses warnings when
|
||
// the same macro is defined multiple times.
|
||
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.OpenMPIsTargetDevice ||
|
||
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.
|
||
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).
|
||
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(std::move(PredefineBuffer));
|
||
}
|