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re PR tree-optimization/51799 (Compiler ICE in vect_is_simple_use_1) 

PR tree-optimization/51799
        * tree-vect-patterns.c (vect_recog_over_widening_pattern): Check
        that the last operation is a type demotion.

From-SVN: r183126
This commit is contained in:
Ira Rosen 2012-01-12 14:41:44 +00:00 committed by Ira Rosen
parent 869eea243d
commit 82db3d43de
5 changed files with 38 additions and 6 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-01-12 Ira Rosen <irar@il.ibm.com>
PR tree-optimization/51799
* tree-vect-patterns.c (vect_recog_over_widening_pattern): Check
that the last operation is a type demotion.
2012-01-12 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.md (*zero_extendsidi2_rex64): Correct movl template.

7
gcc/testsuite/ChangeLog
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@ -1,3 +1,10 @@
2012-01-12 Ira Rosen <irar@il.ibm.com>
PR tree-optimization/51799
* gcc.dg/vect/pr51799.c: New test.
* gcc.dg/vect/vect-widen-shift-u8.c: Expect two widening shift
patterns.
2012-01-12 Dominique d'Humieres <dominiq@lps.ens.fr>
Tobias Burnus <burnus@net-b.de>

18
gcc/testsuite/gcc.dg/vect/pr51799.c Normal file
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@ -0,0 +1,18 @@
/* { dg-do compile } */
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef signed short int16_t;
typedef unsigned long uint32_t;
void
f0a (uint32_t * __restrict__ result, int8_t * __restrict__ arg1,
uint32_t * __restrict__ arg4, int8_t temp_6)
{
int idx;
for (idx = 0; idx < 416; idx += 1)
{
result[idx] = (uint8_t)(((arg1[idx] << 7) + arg4[idx]) * temp_6);
}
}
/* { dg-final { cleanup-tree-dump "vect" } } */

3
gcc/testsuite/gcc.dg/vect/vect-widen-shift-u8.c
View File

@ -59,7 +59,6 @@ int main (void)
return 0;
}
/* { dg-final { scan-tree-dump-times "vect_recog_widen_shift_pattern: detected" 1 "vect" { target vect_widen_shift } } } */
/* { dg-final { scan-tree-dump-times "vect_recog_widen_shift_pattern: detected" 2 "vect" { target vect_widen_shift } } } */
/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
/* { dg-final { cleanup-tree-dump "vect" } } */

10
gcc/tree-vect-patterns.c
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@ -1186,13 +1186,15 @@ vect_recog_over_widening_pattern (VEC (gimple, heap) **stmts,
{
use_lhs = gimple_assign_lhs (use_stmt);
use_type = TREE_TYPE (use_lhs);
/* Support only type promotion or signedess change. Check that USE_TYPE
is not bigger than the original type. */
/* Support only type demotion or signedess change. */
if (!INTEGRAL_TYPE_P (use_type)
|| TYPE_PRECISION (new_type) > TYPE_PRECISION (use_type)
|| TYPE_PRECISION (type) < TYPE_PRECISION (use_type))
|| TYPE_PRECISION (type) <= TYPE_PRECISION (use_type))
return NULL;
/* Check that NEW_TYPE is not bigger than the conversion result. */
if (TYPE_PRECISION (new_type) > TYPE_PRECISION (use_type))
return NULL;
if (TYPE_UNSIGNED (new_type) != TYPE_UNSIGNED (use_type)
|| TYPE_PRECISION (new_type) != TYPE_PRECISION (use_type))
{