From 2b066988909948dc3d53d01760bc2d71d32f3feb Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
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 67f0fd7..e092157 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
-- 
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