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* [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
@ 2011-06-23 22:40 regehr at cs dot utah.edu
2011-06-24 8:08 ` [Bug tree-optimization/49518] [4.6/4.7 Regression] " jakub at gcc dot gnu.org
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: regehr at cs dot utah.edu @ 2011-06-23 22:40 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Summary: ICE in vect_enhance_data_refs_alignment, at
tree-vect-data-refs.c:1555
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: regehr@cs.utah.edu
CC: chenyang@cs.utah.edu
Host: x86_64-unknown-linux-gnu
Target: x86_64-unknown-linux-gnu
Build: x86_64-unknown-linux-gnu
[regehr@gamow tmp032]$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r175350-install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --with-libelf=/usr/local --enable-lto
--prefix=/home/regehr/z/compiler-install/gcc-r175350-install
--program-prefix=r175350- --enable-languages=c,c++
Thread model: posix
gcc version 4.7.0 20110623 (experimental) (GCC)
[regehr@gamow tmp032]$
[regehr@gamow tmp032]$
[regehr@gamow tmp032]$
[regehr@gamow tmp032]$ current-gcc -O3 small.c -c
small.c: In function 'un_':
small.c:13:5: internal compiler error: in vect_enhance_data_refs_alignment, at
tree-vect-data-refs.c:1555
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[regehr@gamow tmp032]$
[regehr@gamow tmp032]$
[regehr@gamow tmp032]$
[regehr@gamow tmp032]$
[regehr@gamow tmp032]$ cat small.c
struct S1
{
int f4;
int f5;
int f9;
};
int *zz;
struct S1 g_40;
struct S1 g_69;
int g_79;
int un_ (struct S1 **p_, int p_6, char p_66)
{
char l_76[] = { 0, 0, 0, 0, 1, };
for (g_40.f4 = 1; g_40.f4; g_40.f4 += 1)
{
int *l_78 = &g_79;
*l_78 = l_76[g_40.f4];
if (zz)
return 1;
*l_78 = p_66 >= g_40.f9;
if (g_69.f5)
break;
}
return 0;
}
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
@ 2011-06-24 8:08 ` jakub at gcc dot gnu.org
2011-06-24 8:49 ` jakub at gcc dot gnu.org
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-06-24 8:08 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011.06.24 08:07:13
CC| |jakub at gcc dot gnu.org
Component|c |tree-optimization
Target Milestone|--- |4.6.1
Summary|ICE in |[4.6/4.7 Regression] ICE in
|vect_enhance_data_refs_alig |vect_enhance_data_refs_alig
|nment, at |nment, at
|tree-vect-data-refs.c:1555 |tree-vect-data-refs.c:1555
Ever Confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-24 08:07:13 UTC ---
Simplified testcase:
int a, b;
struct S { unsigned int s, t, u; } c, d = { 0, 1, 0 };
void
test (unsigned char z)
{
char e[] = {0, 0, 0, 0, 1};
for (c.s = 1; c.s; c.s++)
{
b = e[c.s];
if (a)
break;
b = z >= c.u;
if (d.t)
break;
}
}
Started with http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167184
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
2011-06-24 8:08 ` [Bug tree-optimization/49518] [4.6/4.7 Regression] " jakub at gcc dot gnu.org
@ 2011-06-24 8:49 ` jakub at gcc dot gnu.org
2011-06-24 9:22 ` jakub at gcc dot gnu.org
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-06-24 8:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-24 08:49:15 UTC ---
And with -O3 -fno-tree-copy-prop this started with
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166244
Perhaps that patch should have adjusted the assert too?
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
2011-06-24 8:08 ` [Bug tree-optimization/49518] [4.6/4.7 Regression] " jakub at gcc dot gnu.org
2011-06-24 8:49 ` jakub at gcc dot gnu.org
@ 2011-06-24 9:22 ` jakub at gcc dot gnu.org
2011-06-24 12:04 ` rguenth at gcc dot gnu.org
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-06-24 9:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-24 09:21:53 UTC ---
nelements is here 16, while vf is just 2 (as the loop also operates on ints).
mis is 2 (one iteration has been peeled already before vectorization).
So, npeel_tmp is 14 and as cost model is used, the loop with the assertion that
npeel_tmp <= vf iterates at least once.
Richard, can you please look at this?
Perhaps we want to and with smaller of vf and nelements & (nelements - 1) & (vf
- 1)?
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
` (2 preceding siblings ...)
2011-06-24 9:22 ` jakub at gcc dot gnu.org
@ 2011-06-24 12:04 ` rguenth at gcc dot gnu.org
2011-06-27 16:06 ` jakub at gcc dot gnu.org
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-06-24 12:04 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-24 12:04:32 UTC ---
I'll have a look.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
` (3 preceding siblings ...)
2011-06-24 12:04 ` rguenth at gcc dot gnu.org
@ 2011-06-27 16:06 ` jakub at gcc dot gnu.org
2011-07-04 11:31 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-06-27 16:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.6.1 |4.6.2
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-27 12:33:05 UTC ---
GCC 4.6.1 is being released.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
` (4 preceding siblings ...)
2011-06-27 16:06 ` jakub at gcc dot gnu.org
@ 2011-07-04 11:31 ` rguenth at gcc dot gnu.org
2011-07-05 11:26 ` [Bug tree-optimization/49518] [4.6 " rguenth at gcc dot gnu.org
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-07-04 11:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-04 11:30:17 UTC ---
I'll drop the assert (too many weird asserts in the vectorizer anyway).
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
` (5 preceding siblings ...)
2011-07-04 11:31 ` rguenth at gcc dot gnu.org
@ 2011-07-05 11:26 ` rguenth at gcc dot gnu.org
2011-07-05 11:28 ` [Bug tree-optimization/49518] [4.6/4.7 " rguenth at gcc dot gnu.org
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-07-05 11:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.7.0
Summary|[4.6/4.7 Regression] ICE in |[4.6 Regression] ICE in
|vect_enhance_data_refs_alig |vect_enhance_data_refs_alig
|nment, at |nment, at
|tree-vect-data-refs.c:1555 |tree-vect-data-refs.c:1555
--- Comment #8 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-05 11:25:23 UTC ---
Fixed on trunk sofar.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6/4.7 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
` (6 preceding siblings ...)
2011-07-05 11:26 ` [Bug tree-optimization/49518] [4.6 " rguenth at gcc dot gnu.org
@ 2011-07-05 11:28 ` rguenth at gcc dot gnu.org
2011-08-01 14:57 ` [Bug tree-optimization/49518] [4.6 " rguenth at gcc dot gnu.org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-07-05 11:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-05 11:24:30 UTC ---
Author: rguenth
Date: Tue Jul 5 11:24:26 2011
New Revision: 175847
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175847
Log:
2011-07-05 Richard Guenther <rguenther@suse.de>
PR tree-optimization/49518
PR tree-optimization/49628
* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Skip
irrelevant and invariant data-references.
(vect_analyze_data_ref_access): For invariant loads clear the
group association.
* g++.dg/torture/pr49628.C: New testcase.
* gcc.dg/torture/pr49518.c: Likewise.
Added:
trunk/gcc/testsuite/g++.dg/torture/pr49628.C
trunk/gcc/testsuite/gcc.dg/torture/pr49518.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-data-refs.c
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
` (7 preceding siblings ...)
2011-07-05 11:28 ` [Bug tree-optimization/49518] [4.6/4.7 " rguenth at gcc dot gnu.org
@ 2011-08-01 14:57 ` rguenth at gcc dot gnu.org
2011-09-08 10:33 ` rguenth at gcc dot gnu.org
2011-09-08 10:34 ` rguenth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-08-01 14:57 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
` (8 preceding siblings ...)
2011-08-01 14:57 ` [Bug tree-optimization/49518] [4.6 " rguenth at gcc dot gnu.org
@ 2011-09-08 10:33 ` rguenth at gcc dot gnu.org
2011-09-08 10:34 ` rguenth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-09-08 10:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
--- Comment #9 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-08 10:31:44 UTC ---
Author: rguenth
Date: Thu Sep 8 10:31:39 2011
New Revision: 178685
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178685
Log:
2011-09-08 Richard Guenther <rguenther@suse.de>
Backport from mainline
2011-07-04 Richard Guenther <rguenther@suse.de>
PR tree-optimization/49518
PR tree-optimization/49628
* tree-vect-data-refs.c (vect_enhance_data_refs_alignment): Skip
irrelevant data-references.
* g++.dg/torture/pr49628.C: New testcase.
* gcc.dg/torture/pr49518.c: Likewise.
Added:
branches/gcc-4_6-branch/gcc/testsuite/g++.dg/torture/pr49628.C
branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/torture/pr49518.c
Modified:
branches/gcc-4_6-branch/gcc/ChangeLog
branches/gcc-4_6-branch/gcc/testsuite/ChangeLog
branches/gcc-4_6-branch/gcc/tree-vect-data-refs.c
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug tree-optimization/49518] [4.6 Regression] ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555
2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
` (9 preceding siblings ...)
2011-09-08 10:33 ` rguenth at gcc dot gnu.org
@ 2011-09-08 10:34 ` rguenth at gcc dot gnu.org
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-09-08 10:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49518
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-08 10:31:59 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2011-09-08 10:33 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
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2011-06-23 22:40 [Bug c/49518] New: ICE in vect_enhance_data_refs_alignment, at tree-vect-data-refs.c:1555 regehr at cs dot utah.edu
2011-06-24 8:08 ` [Bug tree-optimization/49518] [4.6/4.7 Regression] " jakub at gcc dot gnu.org
2011-06-24 8:49 ` jakub at gcc dot gnu.org
2011-06-24 9:22 ` jakub at gcc dot gnu.org
2011-06-24 12:04 ` rguenth at gcc dot gnu.org
2011-06-27 16:06 ` jakub at gcc dot gnu.org
2011-07-04 11:31 ` rguenth at gcc dot gnu.org
2011-07-05 11:26 ` [Bug tree-optimization/49518] [4.6 " rguenth at gcc dot gnu.org
2011-07-05 11:28 ` [Bug tree-optimization/49518] [4.6/4.7 " rguenth at gcc dot gnu.org
2011-08-01 14:57 ` [Bug tree-optimization/49518] [4.6 " rguenth at gcc dot gnu.org
2011-09-08 10:33 ` rguenth at gcc dot gnu.org
2011-09-08 10:34 ` rguenth at gcc dot gnu.org
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