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| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-03-06 18:57:27 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-03-06 18:57:27 +0000 |
| commit | 5de92639376d02c091b93418f3d4a0b25b92c26f (patch) | |
| tree | 6db0f16a08d3e0f5d8feea8a59bd2d27420fa52d /gcc/predict.def | |
| parent | 4ea69e9efb4ab33b0ce910662afedbc496d319fa (diff) | |
| download | gcc-5de92639376d02c091b93418f3d4a0b25b92c26f.tar.gz | |
* 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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@122632 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/predict.def')
| -rw-r--r-- | gcc/predict.def | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/predict.def b/gcc/predict.def index ac6777cc16b..cf31442c175 100644 --- a/gcc/predict.def +++ b/gcc/predict.def @@ -73,6 +73,10 @@ DEF_PREDICTOR (PRED_CONTINUE, "continue", HITRATE (56), 0) DEF_PREDICTOR (PRED_NORETURN, "noreturn call", HITRATE (99), PRED_FLAG_FIRST_MATCH) +/* Branch to basic block containing call marked by cold function attribute. */ +DEF_PREDICTOR (PRED_COLD_FUNCTION, "cold function call", HITRATE (99), + PRED_FLAG_FIRST_MATCH) + /* Loopback edge is taken. */ DEF_PREDICTOR (PRED_LOOP_BRANCH, "loop branch", HITRATE (86), PRED_FLAG_FIRST_MATCH) |