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* [Bug rtl-optimization/48334] New: [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority
@ 2011-03-29 14:24 zsojka at seznam dot cz
2011-03-29 14:36 ` [Bug rtl-optimization/48334] " zsojka at seznam dot cz
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zsojka at seznam dot cz @ 2011-03-29 14:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48334
Summary: [4.7 Regression] gcc.target/i386/pr39445.c FAILs with
-fira-algorithm=priority
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 23802
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23802
reduced testcase
Output:
$ gcc -O -fira-algorithm=priority testcase.c
$ ./a.out
Program received signal SIGSEGV, Segmentation fault.
0x0000000000400537 in foo (a1=<value optimized out>, a2=..., a3=..., a4=...,
a5=..., a6=..., a7=..., a8=..., b1=1, b2=2, b3=3, b4=4, b5=5,
b6=6, b7=-1, y=...) at testcase.c:8
8 {
(gdb) disassemble
Dump of assembler code for function foo:
0x0000000000400534 <+0>: xorps %xmm0,%xmm0
=> 0x0000000000400537 <+3>: movaps %xmm0,0x10(%rsp)
0x000000000040053c <+8>: movlps 0x10(%rsp),%xmm0
0x0000000000400541 <+13>: movlps %xmm0,0x10(%rsp)
0x0000000000400546 <+18>: movlps 0x18(%rsp),%xmm0
0x000000000040054b <+23>: movlps %xmm0,0x18(%rsp)
0x0000000000400550 <+28>: movaps 0x10(%rsp),%xmm0
0x0000000000400555 <+33>: retq
End of assembler dump.
(gdb) i r rsp
rsp 0x7fffffffde28 0x7fffffffde28
The problem is unaligned access.
As in PR48331, the code generated by priority allocator is much worse than with
CB's one. The code with both allocators was the same in r171626.
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug rtl-optimization/48334] [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority 2011-03-29 14:24 [Bug rtl-optimization/48334] New: [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority zsojka at seznam dot cz @ 2011-03-29 14:36 ` zsojka at seznam dot cz 2011-03-29 21:38 ` vmakarov at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: zsojka at seznam dot cz @ 2011-03-29 14:36 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48334 Zdenek Sojka <zsojka at seznam dot cz> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |vmakarov at gcc dot gnu.org --- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> 2011-03-29 14:32:47 UTC --- It started with http://gcc.gnu.org/viewcvs?view=revision&revision=171649 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/48334] [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority 2011-03-29 14:24 [Bug rtl-optimization/48334] New: [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority zsojka at seznam dot cz 2011-03-29 14:36 ` [Bug rtl-optimization/48334] " zsojka at seznam dot cz @ 2011-03-29 21:38 ` vmakarov at gcc dot gnu.org 2011-03-30 2:11 ` hp at gcc dot gnu.org 2011-03-30 8:44 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: vmakarov at gcc dot gnu.org @ 2011-03-29 21:38 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48334 --- Comment #2 from Vladimir Makarov <vmakarov at gcc dot gnu.org> 2011-03-29 20:51:18 UTC --- Author: vmakarov Date: Tue Mar 29 20:51:14 2011 New Revision: 171699 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=171699 Log: 2011-03-29 Vladimir Makarov <vmakarov@redhat.com> PR rtl-optimization/48331 PR rtl-optimization/48334 * ira-color.c (color_allocnos): Call setup_profitable_hard_regs for any used algorithm. Modified: trunk/gcc/ChangeLog trunk/gcc/ira-color.c ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/48334] [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority 2011-03-29 14:24 [Bug rtl-optimization/48334] New: [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority zsojka at seznam dot cz 2011-03-29 14:36 ` [Bug rtl-optimization/48334] " zsojka at seznam dot cz 2011-03-29 21:38 ` vmakarov at gcc dot gnu.org @ 2011-03-30 2:11 ` hp at gcc dot gnu.org 2011-03-30 8:44 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: hp at gcc dot gnu.org @ 2011-03-30 2:11 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48334 Hans-Peter Nilsson <hp at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hp at gcc dot gnu.org --- Comment #3 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2011-03-30 01:39:10 UTC --- Should this be closed now? ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug rtl-optimization/48334] [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority 2011-03-29 14:24 [Bug rtl-optimization/48334] New: [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority zsojka at seznam dot cz ` (2 preceding siblings ...) 2011-03-30 2:11 ` hp at gcc dot gnu.org @ 2011-03-30 8:44 ` rguenth at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-03-30 8:44 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48334 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |FIXED Target Milestone|--- |4.7.0 --- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-03-30 08:39:47 UTC --- Assumed fixed. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-03-30 8:39 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-03-29 14:24 [Bug rtl-optimization/48334] New: [4.7 Regression] gcc.target/i386/pr39445.c FAILs with -fira-algorithm=priority zsojka at seznam dot cz 2011-03-29 14:36 ` [Bug rtl-optimization/48334] " zsojka at seznam dot cz 2011-03-29 21:38 ` vmakarov at gcc dot gnu.org 2011-03-30 2:11 ` hp at gcc dot gnu.org 2011-03-30 8:44 ` rguenth at gcc dot gnu.org
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