procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

loop-unroll.c (unroll_loop_runtime_iterations): Set probability of succ edge.

Browse source 
* loop-unroll.c (unroll_loop_runtime_iterations): Set probability of succ edge.

From-SVN: r240140
This commit is contained in:
Pat Haugen 2016-09-14 17:04:18 +00:00 • committed by Pat Haugen
parent 387113816f
commit f335184d24
2 changed files with 5 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
gcc/ChangeLog
View file

@ -1,3 +1,7 @@
2016-09-14 Pat Haugen <pthaugen@us.ibm.com>
* loop-unroll.c (unroll_loop_runtime_iterations): Set probability of succ edge.
2016-09-14 Segher Boessenkool <segher@kernel.crashing.org>
* target.def (lra_p): Change commentary (for the manual) for the

2
gcc/loop-unroll.c
View file

@ -979,7 +979,7 @@ unroll_loop_runtime_iterations (struct loop *loop)
swtch = split_edge_and_insert (single_pred_edge (swtch), branch_code);
set_immediate_dominator (CDI_DOMINATORS, preheader, swtch);
single_pred_edge (swtch)->probability = REG_BR_PROB_BASE - p;
single_succ_edge (swtch)->probability = REG_BR_PROB_BASE - p;
e = make_edge (swtch, preheader,
single_succ_edge (swtch)->flags & EDGE_IRREDUCIBLE_LOOP);
e->count = RDIV (preheader->count * REG_BR_PROB_BASE, p);