diff options
| author | Campbell Barton <ideasman42@gmail.com> | 2011-12-29 05:46:58 +0400 |
|---|---|---|
| committer | Campbell Barton <ideasman42@gmail.com> | 2011-12-29 05:46:58 +0400 |
| commit | 85a97f64a7cbc5f17594a22ce1431520d2ff4d59 (patch) | |
| tree | 33cea0e77c4bd1f3d69d638d163faef817abb84e /source/blender/blenlib | |
| parent | 2ca9a6a0040f64622ad21724418cca6d0eb6789f (diff) | |
add UNLIKELY / LIKELY util defines to help optimize iterators that are called a lot, only defined for gcc at the moment.
also some cmake formatting edits.
Diffstat (limited to 'source/blender/blenlib')
| -rw-r--r-- | source/blender/blenlib/BLI_utildefines.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/source/blender/blenlib/BLI_utildefines.h b/source/blender/blenlib/BLI_utildefines.h index 94189af34fa..abe8fb7d8fe 100644 --- a/source/blender/blenlib/BLI_utildefines.h +++ b/source/blender/blenlib/BLI_utildefines.h @@ -300,4 +300,13 @@ # define BLI_assert(a) (void)0 #endif +/* hints for branch pradiction, only use in code that runs a _lot_ where */ +#ifdef __GNUC__ +# define LIKELY(x) __builtin_expect(!!(x), 1) +# define UNLIKELY(x) __builtin_expect(!!(x), 0) +#else +# define LIKELY(x) (x) +# define UNLIKELY(x) (x) +#endif + #endif // BLI_UTILDEFINES_H |