diff options
| author | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-12-05 17:23:32 +0000 |
|---|---|---|
| committer | ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2018-12-05 17:23:32 +0000 |
| commit | eb79191f16dea9547ded38413b38f4de3fa78569 (patch) | |
| tree | 180d91f941c8e4b7958bc7193bf1b12a7d63432e /include/ruby/defines.h | |
| parent | 756914e57ed6c818155961e43d502132a401cc20 (diff) | |
Introduce "COLDFUNC" function attribute.
* include/ruby/defines.h: introduce "COLDFUNC" function attribute
on several compilers for called unlikely functions.
Apply to rb_memerror, rb_warn and rb_bug.
A patch form methodmissing <lourens@bearmetal.eu>.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66228 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'include/ruby/defines.h')
| -rw-r--r-- | include/ruby/defines.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/ruby/defines.h b/include/ruby/defines.h index fb80813f05..cbf5537790 100644 --- a/include/ruby/defines.h +++ b/include/ruby/defines.h @@ -89,6 +89,16 @@ extern "C" { #define RB_UNLIKELY(x) (x) #endif /* __GNUC__ >= 3 */ +/* + cold attribute for code layout improvements + RUBY_FUNC_ATTRIBUTE not used because MSVC does not like nested func macros + */ +#if defined(__clang__) || GCC_VERSION_SINCE(4, 3, 0) +#define COLDFUNC __attribute__((cold)) +#else +#define COLDFUNC +#endif + #ifdef __GNUC__ #if defined __MINGW_PRINTF_FORMAT #define PRINTF_ARGS(decl, string_index, first_to_check) \ |