Module: Mesa Branch: master Commit: 2695891088d5b910edd9ec4d3ad81f0e3469205c URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=2695891088d5b910edd9ec4d3ad81f0e3469205c
Author: Matt Turner <[email protected]> Date: Tue Sep 30 16:24:39 2014 -0700 util: Add assume() macro. Reviewed-by: Ian Romanick <[email protected]> --- src/util/macros.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/src/util/macros.h b/src/util/macros.h index 40ebf02..ff37a7d 100644 --- a/src/util/macros.h +++ b/src/util/macros.h @@ -75,6 +75,20 @@ do { \ #define unreachable(str) #endif +/** + * Assume macro. Useful for expressing our assumptions to the compiler, + * typically for purposes of silencing warnings. + */ +#ifdef HAVE___BUILTIN_UNREACHABLE +#define assume(expr) ((expr) ? ((void) 0) \ + : (assert(!"assumption failed"), \ + __builtin_unreachable())) +#elif _MSC_VER >= 1200 +#define assume(expr) __assume(expr) +#else +#define assume(expr) assert(expr) +#endif + #ifdef HAVE_FUNC_ATTRIBUTE_FLATTEN #define FLATTEN __attribute__((__flatten__)) #else _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
