diff options
Diffstat (limited to 'gcc/predict.c')
| -rw-r--r-- | gcc/predict.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/predict.c b/gcc/predict.c index 45fffd3b483..4e17b9ac676 100644 --- a/gcc/predict.c +++ b/gcc/predict.c @@ -138,6 +138,27 @@ maybe_hot_bb_p (const_basic_block bb) return maybe_hot_frequency_p (bb->frequency); } +/* Return true if the call can be hot. */ + +bool +cgraph_maybe_hot_edge_p (struct cgraph_edge *edge) +{ + if (profile_info && flag_branch_probabilities + && (edge->count + <= profile_info->sum_max / PARAM_VALUE (HOT_BB_COUNT_FRACTION))) + return false; + if (lookup_attribute ("cold", DECL_ATTRIBUTES (edge->callee->decl)) + || lookup_attribute ("cold", DECL_ATTRIBUTES (edge->caller->decl))) + return false; + if (lookup_attribute ("hot", DECL_ATTRIBUTES (edge->caller->decl))) + return true; + if (flag_guess_branch_prob + && edge->frequency < (CGRAPH_FREQ_MAX + / PARAM_VALUE (HOT_BB_FREQUENCY_FRACTION))) + return false; + return true; +} + /* Return true in case BB can be CPU intensive and should be optimized for maximal performance. */ |