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* [Bug debug/47991] New: [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn
@ 2011-03-04 18:19 jakub at gcc dot gnu.org
2011-03-04 18:36 ` [Bug debug/47991] " jakub at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-03-04 18:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47991
Summary: [4.6 Regression] Var-tracking ICE on s390x
*setmem_long insn
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: debug
AssignedTo: jakub@gcc.gnu.org
ReportedBy: jakub@gcc.gnu.org
Target: s390x-linux
/* { dg-do compile } */
/* { dg-options "-g -Os" } */
typedef __SIZE_TYPE__ size_t;
extern inline __attribute__ ((__always_inline__))
void *
memset (void *x, int y, size_t z)
{
return __builtin___memset_chk (x, y, z, __builtin_object_size (x, 0));
}
void
foo (unsigned char *x, unsigned char *y, unsigned char *z,
unsigned char *w, unsigned int v, int u, int t)
{
int i;
for (i = 0; i < t; i++)
{
memset (z, x[0], v);
memset (w, y[0], v);
x += u;
}
__builtin_memcpy (z, x, u);
}
ICEs on s390x-linux in var-tracking, because
(insn 56 71 57 5 (parallel [
(clobber (reg:TI 6 %r6))
(set (mem:BLK (subreg:DI (reg:TI 6 %r6) 0) [0 A8])
(reg:DI 10 %r10 [95]))
(use (reg:TI 6 %r6))
(use (reg:TI 2 %r2))
(clobber (reg:CC 33 %cc))
]) pr47372.i:9 115 {*setmem_long}
(expr_list:REG_DEAD (reg:DI 10 %r10 [95])
(expr_list:REG_DEAD (reg:DI 7 %r7)
(expr_list:REG_UNUSED (reg:CC 33 %cc)
(expr_list:REG_UNUSED (reg:TI 6 %r6)
(nil))))))
is really weird. But we already allow (set (mem:BLK ...) (const_int ...))
for memset, and while this one is much worse than that, let's workaround it in
var-tracking too.
Not sure if this is a problem in 4.5 too, certainly not in 4.4 which didn't
have VTA.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/47991] [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn
2011-03-04 18:19 [Bug debug/47991] New: [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn jakub at gcc dot gnu.org
@ 2011-03-04 18:36 ` jakub at gcc dot gnu.org
2011-03-04 18:37 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-03-04 18:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47991
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2011.03.04 18:36:14
Target Milestone|--- |4.6.0
Ever Confirmed|0 |1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/47991] [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn
2011-03-04 18:19 [Bug debug/47991] New: [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn jakub at gcc dot gnu.org
2011-03-04 18:36 ` [Bug debug/47991] " jakub at gcc dot gnu.org
@ 2011-03-04 18:37 ` jakub at gcc dot gnu.org
2011-03-07 10:40 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-03-04 18:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47991
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-04 18:37:41 UTC ---
Created attachment 23545
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23545
gcc46-pr47991.patch
Untested fix.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/47991] [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn
2011-03-04 18:19 [Bug debug/47991] New: [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn jakub at gcc dot gnu.org
2011-03-04 18:36 ` [Bug debug/47991] " jakub at gcc dot gnu.org
2011-03-04 18:37 ` jakub at gcc dot gnu.org
@ 2011-03-07 10:40 ` rguenth at gcc dot gnu.org
2011-03-07 22:12 ` jakub at gcc dot gnu.org
2011-03-07 22:17 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-03-07 10:40 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47991
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/47991] [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn
2011-03-04 18:19 [Bug debug/47991] New: [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn jakub at gcc dot gnu.org
` (2 preceding siblings ...)
2011-03-07 10:40 ` rguenth at gcc dot gnu.org
@ 2011-03-07 22:12 ` jakub at gcc dot gnu.org
2011-03-07 22:17 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-03-07 22:12 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47991
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-07 22:11:59 UTC ---
Author: jakub
Date: Mon Mar 7 22:11:55 2011
New Revision: 170759
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170759
Log:
PR debug/47991
* var-tracking.c (find_use_val): Return NULL for
cui->sets && cui->store_p BLKmode MEMs.
* gcc.dg/pr47991.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr47991.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/var-tracking.c
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug debug/47991] [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn
2011-03-04 18:19 [Bug debug/47991] New: [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn jakub at gcc dot gnu.org
` (3 preceding siblings ...)
2011-03-07 22:12 ` jakub at gcc dot gnu.org
@ 2011-03-07 22:17 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-03-07 22:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47991
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-07 22:17:28 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2011-03-04 18:19 [Bug debug/47991] New: [4.6 Regression] Var-tracking ICE on s390x *setmem_long insn jakub at gcc dot gnu.org
2011-03-04 18:36 ` [Bug debug/47991] " jakub at gcc dot gnu.org
2011-03-04 18:37 ` jakub at gcc dot gnu.org
2011-03-07 10:40 ` rguenth at gcc dot gnu.org
2011-03-07 22:12 ` jakub at gcc dot gnu.org
2011-03-07 22:17 ` jakub at gcc dot gnu.org
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