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| author | Jan Hubicka <jh@suse.cz> | 2008-09-01 18:28:06 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2008-09-01 16:28:06 +0000 |
| commit | ba623cedf4b07b3a2c2f3e638fa379bcde55c42e (patch) | |
| tree | acd38c7a826f584bcddf0792b749cd9537cd440f /gcc/predict.c | |
| parent | 6a3799eb0065d62b04315aa2a9808bce71dab54b (diff) | |
| download | gcc-ba623cedf4b07b3a2c2f3e638fa379bcde55c42e.zip gcc-ba623cedf4b07b3a2c2f3e638fa379bcde55c42e.tar.gz gcc-ba623cedf4b07b3a2c2f3e638fa379bcde55c42e.tar.bz2 | |
predict.c (maybe_hot_count_p, [...]): When profile is present, use only counts; when guessed use only frequencies.
* predict.c (maybe_hot_count_p, maybe_hot_edge_p): When profile is
present, use only counts; when guessed use only frequencies.
(estimate_bb_frequencies): Use function_frequency.
* profile.c (compute_branch_probabilities): Exit early when
profile reading failed. Set profile_status.
(branch_prob): Do not set profile_status.
From-SVN: r139868
Diffstat (limited to 'gcc/predict.c')
| -rw-r--r-- | gcc/predict.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/predict.c b/gcc/predict.c index 41a9ee3..1c877ec 100644 --- a/gcc/predict.c +++ b/gcc/predict.c @@ -148,7 +148,9 @@ maybe_hot_count_p (gcov_type count) bool maybe_hot_bb_p (const_basic_block bb) { - return maybe_hot_count_p (bb->count) && maybe_hot_frequency_p (bb->frequency); + if (profile_status == PROFILE_READ) + return maybe_hot_count_p (bb->count); + return maybe_hot_frequency_p (bb->frequency); } /* Return true if the call can be hot. */ @@ -178,7 +180,9 @@ cgraph_maybe_hot_edge_p (struct cgraph_edge *edge) bool maybe_hot_edge_p (edge e) { - return maybe_hot_count_p (e->count) && maybe_hot_frequency_p (EDGE_FREQUENCY (e)); + if (profile_status == PROFILE_READ) + return maybe_hot_count_p (e->count); + return maybe_hot_frequency_p (EDGE_FREQUENCY (e)); } /* Return true in case BB is probably never executed. */ @@ -2009,7 +2013,7 @@ estimate_bb_frequencies (void) basic_block bb; sreal freq_max; - if (!flag_branch_probabilities || !counts_to_freqs ()) + if (cfun->function_frequency != PROFILE_READ || !counts_to_freqs ()) { static int real_values_initialized = 0; |