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re PR tree-optimization/37207 (ice at tree-ssa-ifcombine.c:222 for -Os)

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2008-08-28  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/37207
	* tree-ssa-ifcombine.c (recognize_single_bit_test): Fix
	tuplification bug.

	* gcc.c-torture/compile/pr37207.c: New testcase.

From-SVN: r139714
This commit is contained in:
Richard Guenther 2008-08-28 15:26:13 +00:00 • committed by Richard Biener
parent b7fdeec95f
commit 99781d25b6
4 changed files with 33 additions and 1 deletions
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6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2008-08-28 Richard Guenther <rguenther@suse.de>
PR tree-optimization/37207
* tree-ssa-ifcombine.c (recognize_single_bit_test): Fix
tuplification bug.
2008-08-28 Dodji Seketeli <dodji@redhat.com>
PR c++/36741

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2008-08-28 Richard Guenther <rguenther@suse.de>
PR tree-optimization/37207
* gcc.c-torture/compile/pr37207.c: New testcase.
2008-08-28 Janus Weil <janus@gcc.gnu.org>
PR fortran/37253

21
gcc/testsuite/gcc.c-torture/compile/pr37207.c Normal file
View file

@ -0,0 +1,21 @@
void
func_18 ( int t )
{
unsigned l_889;
int l_895 = 1;
for (0; 1; ++l_889)
{
int t1 = 0;
if (func_81 (1))
{
int rhs = l_895;
if (rhs == 0)
rhs = 1;
if (1 & (t % rhs))
t1 = 1;
}
func_98 (t1);
l_895 = 0;
}
}

2
gcc/tree-ssa-ifcombine.c
View file

@ -212,7 +212,7 @@ recognize_single_bit_test (gimple cond, tree *name, tree *bit)
stmt = SSA_NAME_DEF_STMT (orig_name);
while (is_gimple_assign (stmt)
&& (gimple_assign_copy_p (stmt)
&& (gimple_assign_ssa_name_copy_p (stmt)
|| (gimple_assign_cast_p (stmt)
&& integral_operand_p (gimple_assign_lhs (stmt))
&& integral_operand_p (gimple_assign_rhs1 (stmt))