This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: [patch] Fix PR tree-optimization/49471
On Tue, Jul 26, 2011 at 08:30, Richard Guenther
<richard.guenther@gmail.com> wrote:
> I suppose we also need to allow POINTER_TYPE_P here (but then
> treat it like an unsigned variable of the same width).
Updated patch. Ok for trunk after regstrap?
Thanks,
Sebastian
From 3e8f8cfd0c4298b6b5e88c8bc7ba81a01e7cd815 Mon Sep 17 00:00:00 2001
From: Sebastian Pop <sebpop@gmail.com>
Date: Sun, 24 Jul 2011 01:52:52 -0500
Subject: [PATCH] Fix PR49471: canonicalize_loop_ivs should not generate unsigned types.
2011-07-23 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.
---
gcc/ChangeLog | 7 +++++++
gcc/tree-ssa-loop-manip.c | 19 ++++++++++++++++---
libgomp/ChangeLog | 5 +++++
.../testsuite/libgomp.graphite/force-parallel-1.c | 2 +-
.../testsuite/libgomp.graphite/force-parallel-2.c | 2 +-
5 files changed, 30 insertions(+), 5 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 27d4001..17358a8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,12 @@
2011-07-23 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.
+
+2011-07-23 Sebastian Pop <sebastian.pop@amd.com>
+
PR middle-end/47691
* graphite-clast-to-gimple.c (translate_clast_user): Update use of
copy_bb_and_scalar_dependences.
diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c
index 8176ed8..f3392e6 100644
--- a/gcc/tree-ssa-loop-manip.c
+++ b/gcc/tree-ssa-loop-manip.c
@@ -1200,18 +1200,31 @@ 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);
+ unsigned_p = TYPE_PRECISION (type) > precision ? uns : 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)
{
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index 9225401..d5cd94d 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -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.
+
2011-07-18 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
PR target/49541
diff --git a/libgomp/testsuite/libgomp.graphite/force-parallel-1.c b/libgomp/testsuite/libgomp.graphite/force-parallel-1.c
index 71ed332..7f043d8 100644
--- a/libgomp/testsuite/libgomp.graphite/force-parallel-1.c
+++ b/libgomp/testsuite/libgomp.graphite/force-parallel-1.c
@@ -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" } } */
diff --git a/libgomp/testsuite/libgomp.graphite/force-parallel-2.c b/libgomp/testsuite/libgomp.graphite/force-parallel-2.c
index 1ce0feb..03d8236 100644
--- a/libgomp/testsuite/libgomp.graphite/force-parallel-2.c
+++ b/libgomp/testsuite/libgomp.graphite/force-parallel-2.c
@@ -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" } } */
--
1.7.4.1