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re PR middle-end/47743 (PRE ICE in fold_convert_loc) 

2011-02-15  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/47743
	* tree-ssa-pre.c (phi_translate_1): If we didn't get a value-number
	for a non-type-compatible VN lookup bail out.

	* gcc.dg/torture/pr47743.c: New testcase.

From-SVN: r170173
This commit is contained in:
Richard Guenther 2011-02-15 13:04:47 +00:00 committed by Richard Biener
parent ad1c1eeb76
commit 48feba283c
4 changed files with 39 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-02-15 Richard Guenther <rguenther@suse.de>
PR tree-optimization/47743
* tree-ssa-pre.c (phi_translate_1): If we didn't get a value-number
for a non-type-compatible VN lookup bail out.
2011-02-15 Nathan Froyd <froydnj@codesourcery.com>
* config/fr30/constraints.md: New file.

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2011-02-15 Richard Guenther <rguenther@suse.de>
PR tree-optimization/47743
* gcc.dg/torture/pr47743.c: New testcase.
2011-02-15 Jakub Jelinek <jakub@redhat.com>
PR middle-end/47581

22
gcc/testsuite/gcc.dg/torture/pr47743.c Normal file
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@ -0,0 +1,22 @@
/* { dg-do compile } */
int
foo (void *x, int y)
{
long long a = 1, *b;
double *c;
if (y)
{
b = (long long *) x;
while (b)
a *= *b++;
}
else
{
c = (double *) x;
while (c)
a *= *c++;
}
return a;
}

6
gcc/tree-ssa-pre.c
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@ -1691,6 +1691,12 @@ phi_translate_1 (pre_expr expr, bitmap_set_t set1, bitmap_set_t set2,
result = fold_build1 (VIEW_CONVERT_EXPR, ref->type, result);
converted = true;
}
else if (!result && newref
&& !useless_type_conversion_p (ref->type, newref->type))
{
VEC_free (vn_reference_op_s, heap, newoperands);
return NULL;
}
if (result && is_gimple_min_invariant (result))
{