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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2016-10-31 20:25:52 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2016-10-31 20:25:52 +0000 |
| commit | 90f454aeb9807c038c7d05dbf1a7482f425c7c7b (patch) | |
| tree | 3a71e9b271089fea7468b81fd280e9e8066d8fdc /clang | |
| parent | 1f7deb8908c33632be1c74c9add7c6e6d1d4a852 (diff) | |
| download | bcm5719-llvm-90f454aeb9807c038c7d05dbf1a7482f425c7c7b.tar.gz bcm5719-llvm-90f454aeb9807c038c7d05dbf1a7482f425c7c7b.zip | |
Add comment explaining this mysterious macro name.
llvm-svn: 285631
Diffstat (limited to 'clang')
| -rw-r--r-- | clang/lib/Frontend/InitPreprocessor.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index 5da547e2b54..613248a7f1c 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -992,6 +992,9 @@ static void InitializePredefinedMacros(const TargetInfo &TI, } 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"); } |
