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| author |   Zequan Wu <zequanwu@google.com> | 2020-11-18 15:26:21 -0800 |
|---|---|---|
| committer | Zequan Wu <zequanwu@google.com> | 2020-11-22 16:05:53 -0800 |
| commit | 15a3ae1ab1a64cc62041c32ba54914a9dd7b8361 (patch) | |
| tree | 2bdad503bc071f9b6de8cce66e76a2f7ba60bdf7 /clang/lib/Frontend/InitPreprocessor.cpp | |
| parent | [ARM] Ensure MVE_TwoOpPattern is used inside Predicate's (diff) | |
| download | llvm-project-15a3ae1ab1a64cc62041c32ba54914a9dd7b8361.tar.gz llvm-project-15a3ae1ab1a64cc62041c32ba54914a9dd7b8361.tar.bz2 llvm-project-15a3ae1ab1a64cc62041c32ba54914a9dd7b8361.zip | |
[Clang] Add __STDCPP_THREADS__ to standard predefine macros
According to https://eel.is/c++draft/cpp.predefined#2.6, `__STDCPP_THREADS__` is a predefined macro.
Differential Revision: https://reviews.llvm.org/D91747
Diffstat (limited to 'clang/lib/Frontend/InitPreprocessor.cpp')
| -rw-r--r-- | clang/lib/Frontend/InitPreprocessor.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index 08907fe2469c..86d5e61b7112 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -403,6 +403,12 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI, 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 |