re PR tree-optimization/46184 (ICE: SIGSEGV in vectorizable_reduction (tree-vect-loop.c:4067) with -O -ftree-vectorize -fno-tree-copy-prop -fno-tree-dce)

2010-11-02  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/46184
	* tree-vect-loop.c (vectorizable_reduction): Try to obtain the
	input vector type from the reduction operand as well.

	* gcc.dg/pr46184.c: New testcase.

From-SVN: r166194
This commit is contained in:
Richard Guenther 2010-11-02 15:46:46 +00:00 committed by Richard Biener
parent 1bbd3bdee6
commit 43427f3c58
4 changed files with 34 additions and 5 deletions

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@ -1,3 +1,9 @@
2010-11-02 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46184
* tree-vect-loop.c (vectorizable_reduction): Try to obtain the
input vector type from the reduction operand as well.
2010-11-02 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46177

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@ -1,3 +1,8 @@
2010-11-02 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46184
* gcc.dg/pr46184.c: New testcase.
2010-11-02 Richard Guenther <rguenther@suse.de>
PR tree-optimization/46177

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@ -0,0 +1,18 @@
/* { dg-do compile } */
/* { dg-options "-O -ftree-vectorize -fno-tree-copy-prop -fno-tree-dce" } */
extern int A[], B[];
void
foo (int z)
{
int j, i;
for (j = 0; j < 32; j++)
{
int curr_a = A[0];
for (i = 0; i < 16; i++)
curr_a = A[i] ? curr_a : z;
B[j] = curr_a;
}
}

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@ -3908,7 +3908,7 @@ vectorizable_reduction (gimple stmt, gimple_stmt_iterator *gsi,
VEC (tree, heap) *vec_oprnds0 = NULL, *vec_oprnds1 = NULL, *vect_defs = NULL;
VEC (gimple, heap) *phis = NULL;
int vec_num;
tree def0, def1;
tree def0, def1, tem;
if (nested_in_vect_loop_p (loop, stmt))
{
@ -3999,8 +3999,6 @@ vectorizable_reduction (gimple stmt, gimple_stmt_iterator *gsi,
reduction variable. */
for (i = 0; i < op_type-1; i++)
{
tree tem;
/* The condition of COND_EXPR is checked in vectorizable_condition(). */
if (i == 0 && code == COND_EXPR)
continue;
@ -4025,8 +4023,10 @@ vectorizable_reduction (gimple stmt, gimple_stmt_iterator *gsi,
}
}
is_simple_use = vect_is_simple_use (ops[i], loop_vinfo, NULL, &def_stmt,
&def, &dt);
is_simple_use = vect_is_simple_use_1 (ops[i], loop_vinfo, NULL, &def_stmt,
&def, &dt, &tem);
if (!vectype_in)
vectype_in = tem;
gcc_assert (is_simple_use);
gcc_assert (dt == vect_reduction_def
|| dt == vect_nested_cycle