diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2011-05-02 19:34:44 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2011-05-02 19:34:44 +0000 |
| commit | 6b943ff3a3f8617113ecbf611cf0f8957e4e19d2 (patch) | |
| tree | fc5f365fb9035b2d0c622bbf06c9bbe8627d7279 /include/llvm/Support/Compiler.h | |
| parent | d0e4e96dc17a6c1c6de3340842c80f0e187ba349 (diff) | |
Notes
Diffstat (limited to 'include/llvm/Support/Compiler.h')
| -rw-r--r-- | include/llvm/Support/Compiler.h | 8 |
1 files changed, 8 insertions, 0 deletions
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 |