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| author | Jan Hubicka <jh@suse.cz> | 2005-07-16 14:15:27 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2005-07-16 12:15:27 +0000 |
| commit | 84fc24e8a0955d26e26f81f5a393fccf69156916 (patch) | |
| tree | e40a6f3a4c3b50f937ebf086c49acc42fc0c325d | |
| parent | 866c78db255daf2afb26f267a84469000ac89318 (diff) | |
| download | gcc-84fc24e8a0955d26e26f81f5a393fccf69156916.zip gcc-84fc24e8a0955d26e26f81f5a393fccf69156916.tar.gz gcc-84fc24e8a0955d26e26f81f5a393fccf69156916.tar.bz2 | |
cfg.c (update_bb_profile_for_threading): Fix profile updating.
* cfg.c (update_bb_profile_for_threading): Fix profile updating.
(scale_bbs_frequencies_int): Watch roundoff errors.
* predict.c (return_prediction): Initialize return_stmt.
From-SVN: r102087
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cfg.c | 10 | ||||
| -rw-r--r-- | gcc/predict.c | 2 |
3 files changed, 16 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 25cc46d..de6bad9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2005-07-16 Jan Hubicka <jh@suse.cz> + * cfg.c (update_bb_profile_for_threading): Fix profile updating. + (scale_bbs_frequencies_int): Watch roundoff errors. + * predict.c (return_prediction): Initialize return_stmt. + +2005-07-16 Jan Hubicka <jh@suse.cz> + * profile.c (rest_of_handle_branch_prob): Fix handling of estimation after RTL profiling. @@ -896,7 +896,11 @@ update_bb_profile_for_threading (basic_block bb, int edge_frequency, int scale = 65536 * REG_BR_PROB_BASE / prob; FOR_EACH_EDGE (c, ei, bb->succs) - c->probability = (c->probability * scale) / 65536; + { + c->probability = (c->probability * scale) / 65536; + if (c->probability > REG_BR_PROB_BASE) + c->probability = REG_BR_PROB_BASE; + } } gcc_assert (bb == taken_edge->src); @@ -917,6 +921,10 @@ scale_bbs_frequencies_int (basic_block *bbs, int nbbs, int num, int den) { int i; edge e; + if (num < 0) + num = 0; + if (num > den) + return; for (i = 0; i < nbbs; i++) { edge_iterator ei; diff --git a/gcc/predict.c b/gcc/predict.c index 305ada6..a448c04 100644 --- a/gcc/predict.c +++ b/gcc/predict.c @@ -1206,7 +1206,7 @@ return_prediction (tree val, enum prediction *prediction) static void apply_return_prediction (int *heads) { - tree return_stmt; + tree return_stmt = NULL; tree return_val; edge e; tree phi; |