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re PR tree-optimization/63605 (wrong code at -O3 on x86_64-linux-gnu) 

2014-11-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/63605
	* fold-const.c (fold_binary_loc): Properly use element_precision
	for types that may not be scalar.

	* gcc.dg/vect/pr63605.c: New testcase.

From-SVN: r217238
This commit is contained in:
Richard Biener 2014-11-07 20:57:01 +00:00 committed by Richard Biener
parent 64df297158
commit 382ad5ce1b
4 changed files with 34 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-11-07 Richard Biener <rguenther@suse.de>
PR tree-optimization/63605
* fold-const.c (fold_binary_loc): Properly use element_precision
for types that may not be scalar.
2014-11-07 Evgeny Stupachenko <evstupac@gmail.com>
PR target/63534

2
gcc/fold-const.c
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@ -12817,7 +12817,7 @@ fold_binary_loc (location_t loc,
tree arg00 = TREE_OPERAND (arg0, 0);
tree arg01 = TREE_OPERAND (arg0, 1);
tree itype = TREE_TYPE (arg00);
if (wi::eq_p (arg01, TYPE_PRECISION (itype) - 1))
if (wi::eq_p (arg01, element_precision (itype) - 1))
{
if (TYPE_UNSIGNED (itype))
{

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2014-11-07 Richard Biener <rguenther@suse.de>
PR tree-optimization/63605
* gcc.dg/vect/pr63605.c: New testcase.
2014-11-07 Jeff Law <law@redhat.com>
* g++.dg/pr61289-2.C: Renamed from pr61289-2.c.

22
gcc/testsuite/gcc.dg/vect/pr63605.c Normal file
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@ -0,0 +1,22 @@
/* { dg-do run } */
#include "tree-vect.h"
extern void abort (void);
int a, b[8] = { 2, 0, 0, 0, 0, 0, 0, 0 }, c[8];
int
main ()
{
int d;
check_vect ();
for (; a < 8; a++)
{
d = b[a] >> 1;
c[a] = d != 0;
}
if (c[0] != 1)
abort ();
return 0;
}