diff options
Diffstat (limited to 'gcc/predict.c')
| -rw-r--r-- | gcc/predict.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/predict.c b/gcc/predict.c index ec79338..06da1cd 100644 --- a/gcc/predict.c +++ b/gcc/predict.c @@ -241,6 +241,22 @@ probably_never_executed_bb_p (struct function *fun, const_basic_block bb) return false; } + +/* Return true in case edge E is probably never executed. */ + +bool +probably_never_executed_edge_p (struct function *fun, edge e) +{ + gcc_checking_assert (fun); + if (profile_info && flag_branch_probabilities) + return ((e->count + profile_info->runs / 2) / profile_info->runs) == 0; + if ((!profile_info || !flag_branch_probabilities) + && (cgraph_get_node (fun->decl)->frequency + == NODE_FREQUENCY_UNLIKELY_EXECUTED)) + return true; + return false; +} + /* Return true if NODE should be optimized for size. */ bool |