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* [Bug tree-optimization/66823] New: -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90
@ 2015-07-09 12:09 rguenth at gcc dot gnu.org
2015-07-09 12:12 ` [Bug tree-optimization/66823] " rguenth at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-09 12:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66823
Bug ID: 66823
Summary: -ftree-loop-if-convert-stores miscompiles
gfortran.dg/elemental_optional_args_3.f90
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
Target: i?86-*-*
On x86_64 with -m32/-ftree-loop-if-convert-stores I see
FAIL: gfortran.dg/elemental_optional_args_3.f90 -O3 -fomit-frame-pointer
execution test
FAIL: gfortran.dg/elemental_optional_args_3.f90 -O3 -fomit-frame-pointer
-funroll-loops execution test
FAIL: gfortran.dg/elemental_optional_args_3.f90 -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions execution test
FAIL: gfortran.dg/elemental_optional_args_3.f90 -O3 -g execution test
if-conversion changes
if (p != 0)
val = *p;
else
val = 1;
to
tem = *p;
val = p != 0 ? tem : 1;
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66823] -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90
2015-07-09 12:09 [Bug tree-optimization/66823] New: -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90 rguenth at gcc dot gnu.org
@ 2015-07-09 12:12 ` rguenth at gcc dot gnu.org
2015-07-09 12:13 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-09 12:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66823
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
And with -m64/-ftree-loop-if-convert-stores
FAIL: gcc.c-torture/execute/pr51933.c -O1 execution test
FAIL: gcc.c-torture/execute/pr51933.c -O2 execution test
FAIL: gcc.c-torture/execute/pr51933.c -O3 -fomit-frame-pointer execution
test
FAIL: gcc.c-torture/execute/pr51933.c -O3 -fomit-frame-pointer -funroll-loops
execution test
FAIL: gcc.c-torture/execute/pr51933.c -O3 -fomit-frame-pointer
-funroll-all-loops -finline-functions execution test
FAIL: gcc.c-torture/execute/pr51933.c -O3 -g execution test
FAIL: gcc.c-torture/execute/pr51933.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none execution test
FAIL: gcc.c-torture/execute/pr51933.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects execution test
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66823] -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90
2015-07-09 12:09 [Bug tree-optimization/66823] New: -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90 rguenth at gcc dot gnu.org
2015-07-09 12:12 ` [Bug tree-optimization/66823] " rguenth at gcc dot gnu.org
@ 2015-07-09 12:13 ` rguenth at gcc dot gnu.org
2015-07-09 12:52 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-09 12:13 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66823
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 35943
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35943&action=edit
patch triggering fails without -ftree-loop-if-convert-stores
Discovered while testing attached patch to improve if-conversion of loads
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66823] -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90
2015-07-09 12:09 [Bug tree-optimization/66823] New: -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90 rguenth at gcc dot gnu.org
2015-07-09 12:12 ` [Bug tree-optimization/66823] " rguenth at gcc dot gnu.org
2015-07-09 12:13 ` rguenth at gcc dot gnu.org
@ 2015-07-09 12:52 ` rguenth at gcc dot gnu.org
2015-07-10 7:53 ` rguenth at gcc dot gnu.org
2015-07-10 12:34 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-09 12:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66823
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-07-09
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Index: gcc/tree-if-conv.c
===================================================================
--- gcc/tree-if-conv.c (revision 225610)
+++ gcc/tree-if-conv.c (working copy)
@@ -642,7 +642,7 @@ memrefs_read_or_written_unconditionally
|| TREE_CODE (ref_base_b) == REALPART_EXPR)
ref_base_b = TREE_OPERAND (ref_base_b, 0);
- if (!operand_equal_p (ref_base_a, ref_base_b, 0))
+ if (operand_equal_p (ref_base_a, ref_base_b, 0))
{
tree cb = bb_predicate (gimple_bb (DR_STMT (b)));
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66823] -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90
2015-07-09 12:09 [Bug tree-optimization/66823] New: -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90 rguenth at gcc dot gnu.org
` (2 preceding siblings ...)
2015-07-09 12:52 ` rguenth at gcc dot gnu.org
@ 2015-07-10 7:53 ` rguenth at gcc dot gnu.org
2015-07-10 12:34 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-10 7:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66823
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Jul 10 07:53:06 2015
New Revision: 225652
URL: https://gcc.gnu.org/viewcvs?rev=225652&root=gcc&view=rev
Log:
2015-07-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/66823
* tree-if-conv.c (memrefs_read_or_written_unconditionally): Fix
inverted predicate.
* gcc.dg/vect/pr61194.c: Remove -ftree-loop-if-convert-stores
which should not be necessary. XFAIL.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/vect/pr61194.c
trunk/gcc/tree-if-conv.c
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug tree-optimization/66823] -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90
2015-07-09 12:09 [Bug tree-optimization/66823] New: -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90 rguenth at gcc dot gnu.org
` (3 preceding siblings ...)
2015-07-10 7:53 ` rguenth at gcc dot gnu.org
@ 2015-07-10 12:34 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-07-10 12:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66823
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Jul 10 12:33:28 2015
New Revision: 225671
URL: https://gcc.gnu.org/viewcvs?rev=225671&root=gcc&view=rev
Log:
2015-07-10 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-07-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/66823
* tree-if-conv.c (memrefs_read_or_written_unconditionally): Fix
inverted predicate.
* gcc.dg/vect/pr61194.c: Remove -ftree-loop-if-convert-stores
which should not be necessary. XFAIL.
2015-07-08 Richard Biener <rguenther@suse.de>
PR middle-end/43341
* toplev.c (compile_file): Reset maximum_field_alignment after parsing.
2015-07-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/66794
* gimple-ssa-isolate-paths.c (gimple_ssa_isolate_erroneous_paths):
Free post-dominators.
* gcc.dg/torture/pr66794.c: New testcase.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr66794.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/gimple-ssa-isolate-paths.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/testsuite/gcc.dg/vect/pr61194.c
branches/gcc-5-branch/gcc/toplev.c
branches/gcc-5-branch/gcc/tree-if-conv.c
^ permalink raw reply [flat|nested] 6+ messages in thread
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2015-07-09 12:09 [Bug tree-optimization/66823] New: -ftree-loop-if-convert-stores miscompiles gfortran.dg/elemental_optional_args_3.f90 rguenth at gcc dot gnu.org
2015-07-09 12:12 ` [Bug tree-optimization/66823] " rguenth at gcc dot gnu.org
2015-07-09 12:13 ` rguenth at gcc dot gnu.org
2015-07-09 12:52 ` rguenth at gcc dot gnu.org
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