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re PR tree-optimization/71240 (ICE on valid code at -O2 and above on x86_64-linux-gnu: verify_gimple failed)

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2016-05-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/71240
	* tree-ssa-math-opts.c (init_symbolic_number): Verify the source
	has integral type.

	* gcc.dg/optimize-bswapsi-5.c: New testcase.

From-SVN: r236644
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Richard Biener 2016-05-24 14:40:35 +00:00 • committed by Richard Biener
parent e5328f5dc2
commit b556ea3b46
4 changed files with 45 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-05-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/71240
* tree-ssa-math-opts.c (init_symbolic_number): Verify the source
has integral type.
2016-05-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/71230

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-05-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/71240
* gcc.dg/optimize-bswapsi-5.c: New testcase.
2016-05-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/71230

31
gcc/testsuite/gcc.dg/optimize-bswapsi-5.c Normal file
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@ -0,0 +1,31 @@
/* { dg-do compile } */
/* { dg-require-effective-target bswap32 } */
/* { dg-options "-O2 -fdump-tree-bswap" } */
/* { dg-additional-options "-march=z900" { target s390-*-* } } */
struct L { unsigned int l[2]; };
union U { double a; struct L l; } u;
void
foo (double a, struct L *p)
{
u.a = a;
struct L l = u.l, m;
m.l[0] = (((l.l[1] & 0xff000000) >> 24)
| ((l.l[1] & 0x00ff0000) >> 8)
| ((l.l[1] & 0x0000ff00) << 8)
| ((l.l[1] & 0x000000ff) << 24));
m.l[1] = (((l.l[0] & 0xff000000) >> 24)
| ((l.l[0] & 0x00ff0000) >> 8)
| ((l.l[0] & 0x0000ff00) << 8)
| ((l.l[0] & 0x000000ff) << 24));
*p = m;
}
void
bar (double a, struct L *p)
{
foo (a, p);
}
/* { dg-final { scan-tree-dump-times "32 bit bswap implementation found at" 2 "bswap" } } */

3
gcc/tree-ssa-math-opts.c
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@ -2051,6 +2051,9 @@ init_symbolic_number (struct symbolic_number *n, tree src)
{
int size;
if (! INTEGRAL_TYPE_P (TREE_TYPE (src)))
return false;
n->base_addr = n->offset = n->alias_set = n->vuse = NULL_TREE;
/* Set up the symbolic number N by setting each byte to a value between 1 and