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-rw-r--r--lib/Frontend/InitPreprocessor.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index c9c76e5f1f..ab0e7067a8 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -460,6 +460,10 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
if (FEOpts.ProgramAction == frontend::RunAnalysis)
Builder.defineMacro("__clang_analyzer__");
+ // Define __HAS_TLS__ if the target supports it.
+ if (TI.isTLSSupported())
+ Builder.defineMacro("__HAS_TLS__");
+
// Get other target #defines.
TI.getTargetDefines(LangOpts, Builder);
}