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-rw-r--r--include/llvm/Support/Compiler.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h
index e639a2cfa1..7e855b2f10 100644
--- a/include/llvm/Support/Compiler.h
+++ b/include/llvm/Support/Compiler.h
@@ -95,6 +95,12 @@
#define LLVM_OVERRIDE
#endif
+#if __has_feature(cxx_constexpr) || defined(__GXX_EXPERIMENTAL_CXX0X__)
+# define LLVM_CONSTEXPR constexpr
+#else
+# define LLVM_CONSTEXPR
+#endif
+
/// LLVM_LIBRARY_VISIBILITY - If a class marked with this attribute is linked
/// into a shared library, then the class should be private to the library and
/// not accessible from outside it. Can also be used to mark variables and