19 lines
723 B
Diff
19 lines
723 B
Diff
|
2019-01-18 Jakub Jelinek <jakub@redhat.com>
|
||
|
|
|
||
|
|
PR tree-optimization/88044
|
||
|
|
* tree-ssa-loop-niter.c (number_of_iterations_cond): If condition
|
||
|
|
is false in the first iteration, but !every_iteration, return false
|
||
|
|
instead of true with niter->niter zero.
|
||
|
|
|
||
|
|
--- gcc/tree-ssa-loop-niter.c.jj 2019-01-10 11:43:02.254577008 +0100
|
||
|
|
+++ gcc/tree-ssa-loop-niter.c 2019-01-18 19:51:00.245504728 +0100
|
||
|
|
@@ -1824,6 +1824,8 @@ number_of_iterations_cond (struct loop *
|
||
|
|
tree tem = fold_binary (code, boolean_type_node, iv0->base, iv1->base);
|
||
|
|
if (tem && integer_zerop (tem))
|
||
|
|
{
|
||
|
|
+ if (!every_iteration)
|
||
|
|
+ return false;
|
||
|
|
niter->niter = build_int_cst (unsigned_type_for (type), 0);
|
||
|
|
niter->max = 0;
|
||
|
|
return true;
|