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Fix PR49471: canonicalize_loop_ivs should not generate unsigned types. 

2011-07-27  Sebastian Pop  <sebastian.pop@amd.com>

	PR tree-optimization/49471
	* tree-ssa-loop-manip.c (canonicalize_loop_ivs): Build an unsigned
	iv only when the largest type is unsigned.  Do not call
	lang_hooks.types.type_for_size.

	* testsuite/libgomp.graphite/force-parallel-1.c: Un-xfail.
	* testsuite/libgomp.graphite/force-parallel-2.c: Adjust pattern.

From-SVN: r176838
This commit is contained in:
Sebastian Pop 2011-07-27 16:53:09 +00:00 committed by Sebastian Pop
parent 27165eddf6
commit 3689198db0
5 changed files with 35 additions and 5 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2011-07-27 Sebastian Pop <sebastian.pop@amd.com>
PR tree-optimization/49471
* tree-ssa-loop-manip.c (canonicalize_loop_ivs): Build an unsigned
iv only when the largest type is unsigned. Do not call
lang_hooks.types.type_for_size.
2011-07-27 Sebastian Pop <sebastian.pop@amd.com>
PR middle-end/45450

24
gcc/tree-ssa-loop-manip.c
View File

@ -1200,18 +1200,36 @@ canonicalize_loop_ivs (struct loop *loop, tree *nit, bool bump_in_latch)
gimple stmt;
edge exit = single_dom_exit (loop);
gimple_seq stmts;
enum machine_mode mode;
bool unsigned_p = false;
for (psi = gsi_start_phis (loop->header);
!gsi_end_p (psi); gsi_next (&psi))
{
gimple phi = gsi_stmt (psi);
tree res = PHI_RESULT (phi);
bool uns;
if (is_gimple_reg (res) && TYPE_PRECISION (TREE_TYPE (res)) > precision)
precision = TYPE_PRECISION (TREE_TYPE (res));
type = TREE_TYPE (res);
if (!is_gimple_reg (res)
|| (!INTEGRAL_TYPE_P (type)
&& !POINTER_TYPE_P (type))
|| TYPE_PRECISION (type) < precision)
continue;
uns = POINTER_TYPE_P (type) | TYPE_UNSIGNED (type);
if (TYPE_PRECISION (type) > precision)
unsigned_p = uns;
else
unsigned_p |= uns;
precision = TYPE_PRECISION (type);
}
type = lang_hooks.types.type_for_size (precision, 1);
mode = smallest_mode_for_size (precision, MODE_INT);
precision = GET_MODE_PRECISION (mode);
type = build_nonstandard_integer_type (precision, unsigned_p);
if (original_precision != precision)
{

5
libgomp/ChangeLog
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@ -1,3 +1,8 @@
2011-07-23 Sebastian Pop <sebastian.pop@amd.com>
* testsuite/libgomp.graphite/force-parallel-1.c: Un-xfail.
* testsuite/libgomp.graphite/force-parallel-2.c: Adjust pattern.
2011-07-25 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
PR libgomp/45351

2
libgomp/testsuite/libgomp.graphite/force-parallel-1.c
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@ -23,7 +23,7 @@ int main(void)
}
/* Check that parallel code generation part make the right answer. */
/* { dg-final { scan-tree-dump-times "1 loops carried no dependency" 2 "graphite" { xfail *-*-* } } } */
/* { dg-final { scan-tree-dump-times "1 loops carried no dependency" 2 "graphite" } } */
/* { dg-final { cleanup-tree-dump "graphite" } } */
/* { dg-final { scan-tree-dump-times "loopfn" 5 "optimized" } } */
/* { dg-final { cleanup-tree-dump "parloops" } } */

2
libgomp/testsuite/libgomp.graphite/force-parallel-2.c
View File

@ -23,7 +23,7 @@ int main(void)
}
/* Check that parallel code generation part make the right answer. */
/* { dg-final { scan-tree-dump-times "2 loops carried no dependency" 1 "graphite" } } */
/* { dg-final { scan-tree-dump-times "2 loops carried no dependency" 2 "graphite" } } */
/* { dg-final { cleanup-tree-dump "graphite" } } */
/* { dg-final { scan-tree-dump-times "loopfn" 5 "optimized" } } */
/* { dg-final { cleanup-tree-dump "parloops" } } */