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| author | Jan Hubicka <jh@suse.cz> | 2007-03-06 19:57:27 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2007-03-06 18:57:27 +0000 |
| commit | 52bf96d2f299e9e69db82b5d0ae7186ab949339b (patch) | |
| tree | 6db0f16a08d3e0f5d8feea8a59bd2d27420fa52d /include/ansidecl.h | |
| parent | 20f326d7103a4d9d821a54ad5fa030c8a9aa2478 (diff) | |
| download | gcc-52bf96d2f299e9e69db82b5d0ae7186ab949339b.zip gcc-52bf96d2f299e9e69db82b5d0ae7186ab949339b.tar.gz gcc-52bf96d2f299e9e69db82b5d0ae7186ab949339b.tar.bz2 | |
errors.h (warning, [...]): Mark as cold.
* errors.h (warning, error, fatal, internal_error): Mark as cold.
* predict.c (maybe_hot_bb): Cold functions are never hot; hot functions
are hot.
(probably_cold_bb_p): Cold functions are cold.
(probably_never_executed_bb_p): Cold functions are cold.
(tree_bb_level_predictions): Predict calls to cold functions as not
taken.
(compute_function_frequency): Check hot/cold attributes.
* function.h (function_frequency): Update comments.
* predict.def (PRED_COLD_FUNCTION): Predict cold function.
* c-common.c (handle_hot_attribute, handle_cold_attribute): New.
(c_common_att): Add cold and hot.
* doc/extend.texi (hot,cold attributes): Document.
* ansidecl.h (ATTRIBUTE_COLD, ATTRIBUTE_HOT): New.
From-SVN: r122632
Diffstat (limited to 'include/ansidecl.h')
| -rw-r--r-- | include/ansidecl.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/ansidecl.h b/include/ansidecl.h index 16adc47..c19955a 100644 --- a/include/ansidecl.h +++ b/include/ansidecl.h @@ -367,6 +367,22 @@ So instead we use the macro below and test it against specific values. */ # define ATTRIBUTE_PACKED __attribute__ ((packed)) #endif +/* Attribute `hot' and `cold' was valid as of gcc 4.3. */ +#ifndef ATTRIBUTE_COLD +# if (GCC_VERSION >= 4003) +# define ATTRIBUTE_COLD __attribute__ ((__cold__)) +# else +# define ATTRIBUTE_COLD +# endif /* GNUC >= 4.3 */ +#endif /* ATTRIBUTE_COLD */ +#ifndef ATTRIBUTE_HOT +# if (GCC_VERSION >= 4003) +# define ATTRIBUTE_HOT __attribute__ ((__hot__)) +# else +# define ATTRIBUTE_HOT +# endif /* GNUC >= 4.3 */ +#endif /* ATTRIBUTE_HOT */ + /* We use __extension__ in some places to suppress -pedantic warnings about GCC extensions. This feature didn't work properly before gcc 2.8. */ |