public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug target/52086] New: [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test
@ 2012-02-01 21:56 jakub at gcc dot gnu.org
2012-02-01 21:56 ` [Bug target/52086] " jakub at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-02-01 21:56 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52086
Bug #: 52086
Summary: [4.7 Regression] ICE caused by wrong peephole2 for
QImode mem += reg followed by test
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
AssignedTo: jakub@gcc.gnu.org
ReportedBy: jakub@gcc.gnu.org
Target: i?86-linux
/* { dg-do compile } */
/* { dg-options "-O2" } */
/* { dg-additional-options "-fpic" { target fpic } } */
struct S { char a; char b[100]; };
int bar (void);
int baz (int);
void
foo (struct S *x)
{
if (bar () & 1)
{
char c = bar ();
baz (4);
x->a += c;
while (x->a)
x->b[c] = bar ();
}
}
ICEs on i?86-linux (and x86_64-linux -m32) starting with:
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179646
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/52086] [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test
2012-02-01 21:56 [Bug target/52086] New: [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test jakub at gcc dot gnu.org
@ 2012-02-01 21:56 ` jakub at gcc dot gnu.org
2012-02-01 22:01 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-02-01 21:56 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52086
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2012-02-01
Known to work| |4.6.3
Target Milestone|--- |4.7.0
Ever Confirmed|0 |1
Known to fail| |4.7.0
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/52086] [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test
2012-02-01 21:56 [Bug target/52086] New: [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test jakub at gcc dot gnu.org
2012-02-01 21:56 ` [Bug target/52086] " jakub at gcc dot gnu.org
@ 2012-02-01 22:01 ` jakub at gcc dot gnu.org
2012-02-02 9:05 ` jakub at gcc dot gnu.org
2012-02-02 9:16 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-02-01 22:01 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52086
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-01 22:01:04 UTC ---
Created attachment 26548
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26548
gcc47-pr52086.patch
Untested fix.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/52086] [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test
2012-02-01 21:56 [Bug target/52086] New: [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test jakub at gcc dot gnu.org
2012-02-01 21:56 ` [Bug target/52086] " jakub at gcc dot gnu.org
2012-02-01 22:01 ` jakub at gcc dot gnu.org
@ 2012-02-02 9:05 ` jakub at gcc dot gnu.org
2012-02-02 9:16 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-02-02 9:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52086
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-02 09:05:03 UTC ---
Author: jakub
Date: Thu Feb 2 09:04:57 2012
New Revision: 183830
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183830
Log:
PR target/52086
* config/i386/i386.md (*addqi_2 peephole with SImode addition): Check
that operands[2] is either immediate, or q_regs_operand.
* gcc.dg/pr52086.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr52086.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/52086] [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test
2012-02-01 21:56 [Bug target/52086] New: [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test jakub at gcc dot gnu.org
` (2 preceding siblings ...)
2012-02-02 9:05 ` jakub at gcc dot gnu.org
@ 2012-02-02 9:16 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-02-02 9:16 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52086
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> 2012-02-02 09:15:55 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-02-02 9:16 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-02-01 21:56 [Bug target/52086] New: [4.7 Regression] ICE caused by wrong peephole2 for QImode mem += reg followed by test jakub at gcc dot gnu.org
2012-02-01 21:56 ` [Bug target/52086] " jakub at gcc dot gnu.org
2012-02-01 22:01 ` jakub at gcc dot gnu.org
2012-02-02 9:05 ` jakub at gcc dot gnu.org
2012-02-02 9:16 ` jakub at gcc dot gnu.org
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).