* [Bug target/91518] [9/10 Regression] segfault when run CPU2006 465.tonto since r263875
[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
@ 2020-03-12 11:58 ` jakub at gcc dot gnu.org
2020-03-25 21:05 ` law at redhat dot com
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From: jakub at gcc dot gnu.org @ 2020-03-12 11:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.3 |9.4
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 9.3.0 has been released, adjusting target milestone.
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug target/91518] [9/10 Regression] segfault when run CPU2006 465.tonto since r263875
[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
2020-03-12 11:58 ` [Bug target/91518] [9/10 Regression] segfault when run CPU2006 465.tonto since r263875 jakub at gcc dot gnu.org
@ 2020-03-25 21:05 ` law at redhat dot com
2020-03-26 7:07 ` rguenth at gcc dot gnu.org
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From: law at redhat dot com @ 2020-03-25 21:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
CC| |law at redhat dot com
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug target/91518] [9/10 Regression] segfault when run CPU2006 465.tonto since r263875
[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
2020-03-12 11:58 ` [Bug target/91518] [9/10 Regression] segfault when run CPU2006 465.tonto since r263875 jakub at gcc dot gnu.org
2020-03-25 21:05 ` law at redhat dot com
@ 2020-03-26 7:07 ` rguenth at gcc dot gnu.org
2020-03-26 7:17 ` luoxhu at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2020-03-26 7:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P1 |P3
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
This still needs analysis from somebody with SPEC and powerpc knowledge. I'm
also curious if it still happens to be a problem? Also it's still not
confirmed
whether GCC 9 is affected or not.
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[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2020-03-26 7:07 ` rguenth at gcc dot gnu.org
@ 2020-03-26 7:17 ` luoxhu at gcc dot gnu.org
2020-04-01 8:43 ` rguenth at gcc dot gnu.org
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From: luoxhu at gcc dot gnu.org @ 2020-03-26 7:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
luoxhu at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |luoxhu at gcc dot gnu.org
--- Comment #8 from luoxhu at gcc dot gnu.org ---
patch sent to: https://gcc.gnu.org/pipermail/gcc-patches/2020-March/542693.html
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[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2020-03-26 7:17 ` luoxhu at gcc dot gnu.org
@ 2020-04-01 8:43 ` rguenth at gcc dot gnu.org
2020-04-27 1:48 ` cvs-commit at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2020-04-01 8:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|WAITING |NEW
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[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
2020-04-01 8:43 ` rguenth at gcc dot gnu.org
@ 2020-04-27 1:48 ` cvs-commit at gcc dot gnu.org
2020-04-27 6:25 ` [Bug target/91518] [9 " rguenth at gcc dot gnu.org
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From: cvs-commit at gcc dot gnu.org @ 2020-04-27 1:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Xiong Hu Luo <luoxhu@gcc.gnu.org>:
https://gcc.gnu.org/g:f6955089db6c3aa63c276704159ffad1ef15d256
commit r10-7981-gf6955089db6c3aa63c276704159ffad1ef15d256
Author: Xionghu Luo <luoxhu@linux.ibm.com>
Date: Sun Apr 26 20:37:27 2020 -0500
rs6000: Don't use HARD_FRAME_POINTER_REGNUM if it's not live in
pro_and_epilogue (PR91518)
This bug is exposed by FRE refactor of r263875. Comparing the fre
dump file shows no obvious change of the segment fault function proves
it to be a target issue.
frame_pointer_needed is set to true in reload pass setup_can_eliminate,
but regs_ever_live[31] is false, pro_and_epilogue uses it without live
check causing CPU2006 465.tonto segment fault of loading from invalid
addresses due to r31 not saved/restored. Thus, add
HARD_FRAME_POINTER_REGNUM
live check with frame_pointer_needed_indeed when generating
pro_and_epilogue
instructions.
gcc/ChangeLog
2020-04-27 Xiong Hu Luo <luoxhu@linux.ibm.com>
PR target/91518
* config/rs6000/rs6000-logue.c (frame_pointer_needed_indeed):
New variable.
(rs6000_emit_prologue_components):
Check with frame_pointer_needed_indeed.
(rs6000_emit_epilogue_components): Likewise.
(rs6000_emit_prologue): Likewise.
(rs6000_emit_epilogue): Set frame_pointer_needed_indeed.
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug target/91518] [9 Regression] segfault when run CPU2006 465.tonto since r263875
[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
` (5 preceding siblings ...)
2020-04-27 1:48 ` cvs-commit at gcc dot gnu.org
@ 2020-04-27 6:25 ` rguenth at gcc dot gnu.org
2020-05-11 1:44 ` cvs-commit at gcc dot gnu.org
2020-05-12 0:42 ` luoxhu at gcc dot gnu.org
8 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-04-27 6:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |9.3.0
Known to work| |10.0
Summary|[9/10 Regression] segfault |[9 Regression] segfault
|when run CPU2006 465.tonto |when run CPU2006 465.tonto
|since r263875 |since r263875
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
` (6 preceding siblings ...)
2020-04-27 6:25 ` [Bug target/91518] [9 " rguenth at gcc dot gnu.org
@ 2020-05-11 1:44 ` cvs-commit at gcc dot gnu.org
2020-05-12 0:42 ` luoxhu at gcc dot gnu.org
8 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-05-11 1:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Xiong Hu Luo
<luoxhu@gcc.gnu.org>:
https://gcc.gnu.org/g:b8da02efe62611a9f173c699a76010de5b916d33
commit r9-8583-gb8da02efe62611a9f173c699a76010de5b916d33
Author: Xionghu Luo <luoxhu@linux.ibm.com>
Date: Sun May 10 20:27:38 2020 -0500
rs6000: Don't use HARD_FRAME_POINTER_REGNUM if it's not live in
pro_and_epilogue (PR91518)
Backport from master.
This bug is exposed by FRE refactor of r263875. Comparing the fre
dump file shows no obvious change of the segment fault function proves
it to be a target issue.
frame_pointer_needed is set to true in reload pass setup_can_eliminate,
but regs_ever_live[31] is false, pro_and_epilogue uses it without live
check causing CPU2006 465.tonto segment fault of loading from invalid
addresses due to r31 not saved/restored. Thus, add
HARD_FRAME_POINTER_REGNUM
live check with frame_pointer_needed_indeed when generating
pro_and_epilogue
instructions.
gcc/ChangeLog
2020-05-11 Xiong Hu Luo <luoxhu@linux.ibm.com>
Backport from master.
2020-04-27 Xiong Hu Luo <luoxhu@linux.ibm.com>
PR target/91518
* config/rs6000/rs6000.c (frame_pointer_needed_indeed):
New variable.
(rs6000_emit_prologue_components):
Check with frame_pointer_needed_indeed.
(rs6000_emit_epilogue_components): Likewise.
(rs6000_emit_prologue): Likewise.
(rs6000_emit_epilogue): Set frame_pointer_needed_indeed.
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug target/91518] [9 Regression] segfault when run CPU2006 465.tonto since r263875
[not found] <bug-91518-4@http.gcc.gnu.org/bugzilla/>
` (7 preceding siblings ...)
2020-05-11 1:44 ` cvs-commit at gcc dot gnu.org
@ 2020-05-12 0:42 ` luoxhu at gcc dot gnu.org
8 siblings, 0 replies; 9+ messages in thread
From: luoxhu at gcc dot gnu.org @ 2020-05-12 0:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91518
luoxhu at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #12 from luoxhu at gcc dot gnu.org ---
Also fixed on gcc-9.
^ permalink raw reply [flat|nested] 9+ messages in thread