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re PR tree-optimization/87200 (ICE in set_ssa_val_to, at tree-ssa-sccvn.c:3629) 

2018-09-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87200
	* tree-ssa-sccvn.c (vn_nary_build_or_lookup_1): Valueize a
	simplify result.

	* gcc.dg/torture/pr87200.c: New testcase.

From-SVN: r264062
This commit is contained in:
Richard Biener 2018-09-03 14:29:00 +00:00 committed by Richard Biener
parent 7efe0dd0b4
commit 339e6723c9
4 changed files with 41 additions and 2 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2018-09-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/87200
* tree-ssa-sccvn.c (vn_nary_build_or_lookup_1): Valueize a
simplify result.
2018-09-03 Martin Liska <mliska@suse.cz>
PR tree-optimization/87201

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-09-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/87200
* gcc.dg/torture/pr87200.c: New testcase.
2018-09-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/87197

23
gcc/testsuite/gcc.dg/torture/pr87200.c Normal file
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@ -0,0 +1,23 @@
/* { dg-do compile } */
unsigned long long int ry;
int
gl (void)
{
long long int my = 0;
unsigned long long int *oi = (unsigned long long int *) &my;
int s9;
s9 = !!gl () ? ry : 0;
if (s9 != 0)
oi = &ry;
else
{
my = ry;
*oi += my;
}
return *oi;
}

9
gcc/tree-ssa-sccvn.c
View File

@ -1759,8 +1759,13 @@ vn_nary_build_or_lookup_1 (gimple_match_op *res_op, bool insert)
gimple *new_stmt = NULL;
if (res
&& gimple_simplified_result_is_gimple_val (res_op))
/* The expression is already available. */
result = res_op->ops[0];
{
/* The expression is already available. */
result = res_op->ops[0];
/* Valueize it, simplification returns sth in AVAIL only. */
if (TREE_CODE (result) == SSA_NAME)
result = SSA_VAL (result);
}
else
{
tree val = vn_lookup_simplify_result (res_op);