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* [Bug rtl-optimization/64671] New: [5 Regression] s390-linux profiledbootstrap failure
@ 2015-01-19 15:40 jakub at gcc dot gnu.org
2015-01-19 15:46 ` [Bug rtl-optimization/64671] " jakub at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2015-01-19 15:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64671
Bug ID: 64671
Summary: [5 Regression] s390-linux profiledbootstrap failure
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
On s390-linux, profiledbootstrap hangs while compiling various libgcc routines
with stageprofile cc1.
This looks like a register allocation issue to me.
.L2667:
.loc 3 1448 0
lr %r1,%r8
ahi %r1,-1
lhi %r4,1
lr %r10,%r1
jne .L2667
is an endless loop, because r8 doesn't change in the loop, so if it is not 1 at
the beginning of the loop, it will cycle forever.
During reload one can see first the:
(code_label 6256 8889 3592 323 2667 "" [1 uses])
(note 3592 6256 3599 323 [bb 323] NOTE_INSN_BASIC_BLOCK)
(insn 3599 3592 11197 323 (set (reg:SI 4 %r4)
(const_int 1 [0x1])) ../../gcc/vec.h:1448 68 {*movsi_esa}
(nil))
(insn 11197 3599 11038 323 (parallel [
(set (pc)
(if_then_else (ne (reg:SI 8 %r8 [orig:1459 D.73971 ] [1459])
(const_int 1 [0x1]))
(label_ref 6256)
(pc)))
(set (reg:SI 10 %r10 [orig:1460 D.73963 ] [1460])
(plus:SI (reg:SI 8 %r8 [orig:1459 D.73971 ] [1459])
(const_int -1 [0xffffffffffffffff])))
(clobber (reg:SI 1 %r1 [5607]))
(clobber (reg:CC 33 %cc))
]) ../../gcc/vec.h:1448 619 {doloop_si64}
(nil))
which already is the endless loop, but at *.ira there is no such code like
that, so it rematerialized from somewhere else.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug rtl-optimization/64671] [5 Regression] s390-linux profiledbootstrap failure
2015-01-19 15:40 [Bug rtl-optimization/64671] New: [5 Regression] s390-linux profiledbootstrap failure jakub at gcc dot gnu.org
@ 2015-01-19 15:46 ` jakub at gcc dot gnu.org
2015-01-19 15:54 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2015-01-19 15:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64671
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 34486
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34486&action=edit
tsf.ii.bz2
Preprocessed tree-ssa-forwprop.c.
To reproduce with x86_64-linux -> s390x-linux cross:
./cc1plus -m31 -O2 -fexceptions -fstack-protector-strong -march=z9-109 \
-mtune=z10 -fprofile-generate -fno-exceptions -fno-rtti \
-fasynchronous-unwind-tables tsf.ii -o tsf.s -nostdinc
Look for 3rd line with
brasl %r14,_ZN3vecIP9tree_node7va_heap6vl_ptrE7reserveEjb
and a few lines above it is that:
.L2667:
.loc 3 1448 0
lr %r1,%r8
ahi %r1,-1
lhi %r4,1
lr %r10,%r1
jne .L2667
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug rtl-optimization/64671] [5 Regression] s390-linux profiledbootstrap failure
2015-01-19 15:40 [Bug rtl-optimization/64671] New: [5 Regression] s390-linux profiledbootstrap failure jakub at gcc dot gnu.org
2015-01-19 15:46 ` [Bug rtl-optimization/64671] " jakub at gcc dot gnu.org
@ 2015-01-19 15:54 ` jakub at gcc dot gnu.org
2015-01-19 19:54 ` vmakarov at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2015-01-19 15:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64671
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-01-19
CC| |krebbel at gcc dot gnu.org,
| |vmakarov at gcc dot gnu.org
Target Milestone|--- |5.0
Ever confirmed|0 |1
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug rtl-optimization/64671] [5 Regression] s390-linux profiledbootstrap failure
2015-01-19 15:40 [Bug rtl-optimization/64671] New: [5 Regression] s390-linux profiledbootstrap failure jakub at gcc dot gnu.org
2015-01-19 15:46 ` [Bug rtl-optimization/64671] " jakub at gcc dot gnu.org
2015-01-19 15:54 ` jakub at gcc dot gnu.org
@ 2015-01-19 19:54 ` vmakarov at gcc dot gnu.org
2015-01-19 20:14 ` vmakarov at gcc dot gnu.org
2015-01-20 7:48 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: vmakarov at gcc dot gnu.org @ 2015-01-19 19:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64671
--- Comment #2 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I started to work on this. The patch will be in the trunk today. Thanks.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/64671] [5 Regression] s390-linux profiledbootstrap failure
2015-01-19 15:40 [Bug rtl-optimization/64671] New: [5 Regression] s390-linux profiledbootstrap failure jakub at gcc dot gnu.org
` (2 preceding siblings ...)
2015-01-19 19:54 ` vmakarov at gcc dot gnu.org
@ 2015-01-19 20:14 ` vmakarov at gcc dot gnu.org
2015-01-20 7:48 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: vmakarov at gcc dot gnu.org @ 2015-01-19 20:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64671
--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Mon Jan 19 20:13:35 2015
New Revision: 219857
URL: https://gcc.gnu.org/viewcvs?rev=219857&root=gcc&view=rev
Log:
2015-01-19 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/64671
* lra-remat.c (operand_to_remat): Don't consider jump and call
insns.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-remat.c
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug rtl-optimization/64671] [5 Regression] s390-linux profiledbootstrap failure
2015-01-19 15:40 [Bug rtl-optimization/64671] New: [5 Regression] s390-linux profiledbootstrap failure jakub at gcc dot gnu.org
` (3 preceding siblings ...)
2015-01-19 20:14 ` vmakarov at gcc dot gnu.org
@ 2015-01-20 7:48 ` jakub at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2015-01-20 7:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64671
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Thanks, with this patch s390-linux as well as s390x-linux profiledbootstrap
succeeds again (well, s390x-linux worked before too).
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2015-01-20 7:48 UTC | newest]
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2015-01-19 15:40 [Bug rtl-optimization/64671] New: [5 Regression] s390-linux profiledbootstrap failure jakub at gcc dot gnu.org
2015-01-19 15:46 ` [Bug rtl-optimization/64671] " jakub at gcc dot gnu.org
2015-01-19 15:54 ` jakub at gcc dot gnu.org
2015-01-19 19:54 ` vmakarov at gcc dot gnu.org
2015-01-19 20:14 ` vmakarov at gcc dot gnu.org
2015-01-20 7:48 ` jakub at gcc dot gnu.org
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