git
/
gcc
mirror of git://gcc.gnu.org/git/gcc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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
This commit is contained in:
Jan Hubicka 2005-07-16 14:15:27 +02:00 committed by Jan Hubicka
parent 866c78db25
commit 84fc24e8a0
3 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
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> 2005-07-16 Jan Hubicka <jh@suse.cz>
* profile.c (rest_of_handle_branch_prob): Fix handling of estimation * profile.c (rest_of_handle_branch_prob): Fix handling of estimation

10
gcc/cfg.c
View File

@ -896,7 +896,11 @@ update_bb_profile_for_threading (basic_block bb, int edge_frequency,
int scale = 65536 * REG_BR_PROB_BASE / prob; int scale = 65536 * REG_BR_PROB_BASE / prob;
FOR_EACH_EDGE (c, ei, bb->succs) 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); 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; int i;
edge e; edge e;
if (num < 0)
num = 0;
if (num > den)
return;
for (i = 0; i < nbbs; i++) for (i = 0; i < nbbs; i++)
{ {
edge_iterator ei; edge_iterator ei;

2
gcc/predict.c
View File

@ -1206,7 +1206,7 @@ return_prediction (tree val, enum prediction *prediction)
static void static void
apply_return_prediction (int *heads) apply_return_prediction (int *heads)
{ {
tree return_stmt; tree return_stmt = NULL;
tree return_val; tree return_val;
edge e; edge e;
tree phi; tree phi;