From 6b943ff3a3f8617113ecbf611cf0f8957e4e19d2 Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Mon, 2 May 2011 19:34:44 +0000 Subject: Vendor import of llvm trunk r130700: http://llvm.org/svn/llvm-project/llvm/trunk@130700 --- include/llvm/Support/Compiler.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/llvm/Support/Compiler.h') diff --git a/include/llvm/Support/Compiler.h b/include/llvm/Support/Compiler.h index 67f0fd7e0dc6..e0921572182b 100644 --- a/include/llvm/Support/Compiler.h +++ b/include/llvm/Support/Compiler.h @@ -126,4 +126,12 @@ decl #endif +// LLVM_BUILTIN_UNREACHABLE - On compilers which support it, expands +// to an expression which states that it is undefined behavior for the +// compiler to reach this point. Otherwise is not defined. +#if defined(__clang__) || (__GNUC__ > 4) \ + || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) +# define LLVM_BUILTIN_UNREACHABLE __builtin_unreachable() +#endif + #endif -- cgit v1.3