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| author | Glenn Strauss <gstrauss@gluelogic.com> | 2020-11-21 10:37:29 -0500 |
|---|---|---|
| committer | Glenn Strauss <gstrauss@gluelogic.com> | 2020-11-27 08:12:21 -0500 |
| commit | 647222b35c38a1b60da9e7a4dd7248975a4cb870 (patch) | |
| tree | 760e93723b0893f5a64529ebbef8f795392a5e8a /src/first.h | |
| parent | 730c932e3c32ea43dbbb2fad51c2ebfc9219b856 (diff) | |
| download | lighttpd-git-647222b35c38a1b60da9e7a4dd7248975a4cb870.tar.gz | |
[core] check for __builtin_expect() availability
Diffstat (limited to 'src/first.h')
| -rw-r--r-- | src/first.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/first.h b/src/first.h index d011f227..dd095f8a 100644 --- a/src/first.h +++ b/src/first.h @@ -60,6 +60,10 @@ #define __has_attribute(x) 0 #endif +#ifndef __has_builtin /* clang */ +#define __has_builtin(x) 0 +#endif + #ifdef __GNUC__ #ifndef __GNUC_PREREQ # ifdef __GNUC_PREREQ__ @@ -75,6 +79,13 @@ #define __GNUC_PREREQ(maj,min) 0 #endif +#ifndef __builtin_expect +#if !__has_builtin(__builtin_expect) \ + && !__GNUC_PREREQ(2,96) +#define __builtin_expect(x,y) (x) +#endif +#endif + #ifndef __attribute_noinline__ #if __has_attribute(noinline) \ || __GNUC_PREREQ(3,1) |