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-rw-r--r--lib/Frontend/InitPreprocessor.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index 4bbd033f1c..7da7353278 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -507,6 +507,8 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
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);
DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);