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Introduce likely() and unlikely() macros, use to give gcc hints about which branch is likely to be taken in a conditional, use them in the midi player for a small speedup, use instead of similar EXPECT macros in tremor and use in mpegplayer

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19162 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Nils Wallménius 2008-11-20 20:20:43 +00:00
parent 7bdf9a3392
commit 1284c127f8
5 changed files with 32 additions and 42 deletions
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7
apps/plugins/mpegplayer/attributes.h
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@ -32,10 +32,3 @@
#define ATTR_ALIGN(align)
#endif
#ifdef HAVE_BUILTIN_EXPECT
#define likely(x) __builtin_expect ((x) != 0, 1)
#define unlikely(x) __builtin_expect ((x) != 0, 0)
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif