public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug rtl-optimization/22425] New: ICE in loop_givs_rescan, at loop.c:5521
@ 2005-07-12 4:07 belyshev at depni dot sinp dot msu dot ru
2005-07-12 4:25 ` [Bug rtl-optimization/22425] " pinskia at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: belyshev at depni dot sinp dot msu dot ru @ 2005-07-12 4:07 UTC (permalink / raw)
To: gcc-bugs
Here is tescase for this ICE, which was first mentioned in
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20126#c26 .
It still fails on mainline.
------------------------------------------------------------------------------
// compile with -O2
static struct
{
unsigned int p, f;
} s[] ={
{ 0x08, 625 },
{ 0x09, 1250 },
{ 0x0a, 2500 },
{ 0x0b, 3030 },
{ 0x0c, 5000 }
};
unsigned int foo (unsigned int f)
{
int i, n;
n = sizeof (s) / sizeof (s[0]);
for (i = 0; i < n; i++)
if (f == s[i].f)
return 100000000 / s[i].p;
return 10000000 / f;
}
--
Summary: ICE in loop_givs_rescan, at loop.c:5521
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: belyshev at depni dot sinp dot msu dot ru
CC: aoliva at gcc dot gnu dot org,gcc-bugs at gcc dot gnu
dot org
GCC target triplet: x86_64-unknown-linux-gnu
OtherBugsDependingO 20126
nThis:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22425
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/22425] ICE in loop_givs_rescan, at loop.c:5521
2005-07-12 4:07 [Bug rtl-optimization/22425] New: ICE in loop_givs_rescan, at loop.c:5521 belyshev at depni dot sinp dot msu dot ru
@ 2005-07-12 4:25 ` pinskia at gcc dot gnu dot org
2005-07-12 4:41 ` pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-12 4:25 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
GCC target triplet|x86_64-unknown-linux-gnu |x86_64-*-linux-gnu,
| |powerpc64-darwin
Keywords| |ice-on-valid-code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22425
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/22425] ICE in loop_givs_rescan, at loop.c:5521
2005-07-12 4:07 [Bug rtl-optimization/22425] New: ICE in loop_givs_rescan, at loop.c:5521 belyshev at depni dot sinp dot msu dot ru
2005-07-12 4:25 ` [Bug rtl-optimization/22425] " pinskia at gcc dot gnu dot org
@ 2005-07-12 4:41 ` pinskia at gcc dot gnu dot org
2005-08-04 22:42 ` pinskia at gcc dot gnu dot org
2005-08-04 23:11 ` [Bug rtl-optimization/22425] [4.1 regression] " belyshev at depni dot sinp dot msu dot ru
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-12 4:41 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
GCC target triplet|x86_64-*-linux-gnu, |x86_64-*-linux-gnu
|powerpc64-darwin |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22425
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/22425] ICE in loop_givs_rescan, at loop.c:5521
2005-07-12 4:07 [Bug rtl-optimization/22425] New: ICE in loop_givs_rescan, at loop.c:5521 belyshev at depni dot sinp dot msu dot ru
2005-07-12 4:25 ` [Bug rtl-optimization/22425] " pinskia at gcc dot gnu dot org
2005-07-12 4:41 ` pinskia at gcc dot gnu dot org
@ 2005-08-04 22:42 ` pinskia at gcc dot gnu dot org
2005-08-04 23:11 ` [Bug rtl-optimization/22425] [4.1 regression] " belyshev at depni dot sinp dot msu dot ru
3 siblings, 0 replies; 5+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-08-04 22:42 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-04 22:41 -------
This works in "4.1.0 20050802".
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22425
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/22425] [4.1 regression] ICE in loop_givs_rescan, at loop.c:5521
2005-07-12 4:07 [Bug rtl-optimization/22425] New: ICE in loop_givs_rescan, at loop.c:5521 belyshev at depni dot sinp dot msu dot ru
` (2 preceding siblings ...)
2005-08-04 22:42 ` pinskia at gcc dot gnu dot org
@ 2005-08-04 23:11 ` belyshev at depni dot sinp dot msu dot ru
3 siblings, 0 replies; 5+ messages in thread
From: belyshev at depni dot sinp dot msu dot ru @ 2005-08-04 23:11 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From belyshev at depni dot sinp dot msu dot ru 2005-08-04 23:09 -------
Fixed by this patch:
2005-07-14 Alexandre Oliva <aoliva@redhat.com>
Ulrich Weigand <uweigand@de.ibm.com>
PR target/20126
* loop.c (loop_givs_rescan): Do not ICE if unable to reduce an IV
in some insn.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
Summary|ICE in loop_givs_rescan, at |[4.1 regression] ICE in
|loop.c:5521 |loop_givs_rescan, at
| |loop.c:5521
Target Milestone|--- |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22425
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-08-04 23:11 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-07-12 4:07 [Bug rtl-optimization/22425] New: ICE in loop_givs_rescan, at loop.c:5521 belyshev at depni dot sinp dot msu dot ru
2005-07-12 4:25 ` [Bug rtl-optimization/22425] " pinskia at gcc dot gnu dot org
2005-07-12 4:41 ` pinskia at gcc dot gnu dot org
2005-08-04 22:42 ` pinskia at gcc dot gnu dot org
2005-08-04 23:11 ` [Bug rtl-optimization/22425] [4.1 regression] " belyshev at depni dot sinp dot msu dot ru
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).