* [Bug target/65647] [5 Regression] GCC won't stop when compile for armv6-m
[not found] <bug-65647-4@http.gcc.gnu.org/bugzilla/>
@ 2015-04-01 9:42 ` jakub at gcc dot gnu.org
2015-04-01 14:01 ` rguenth at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2015-04-01 9:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65647
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |vmakarov at gcc dot gnu.org
Target Milestone|--- |5.0
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2015-04-01 9:42 ` [Bug target/65647] [5 Regression] GCC won't stop when compile for armv6-m jakub at gcc dot gnu.org
@ 2015-04-01 14:01 ` rguenth at gcc dot gnu.org
2015-04-02 5:25 ` law at redhat dot com
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From: rguenth at gcc dot gnu.org @ 2015-04-01 14:01 UTC (permalink / raw)
To: gcc-bugs
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ra
Target| |arm-none-eabi
Priority|P3 |P1
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2015-04-01 9:42 ` [Bug target/65647] [5 Regression] GCC won't stop when compile for armv6-m jakub at gcc dot gnu.org
2015-04-01 14:01 ` rguenth at gcc dot gnu.org
@ 2015-04-02 5:25 ` law at redhat dot com
2015-04-04 14:36 ` vmakarov at gcc dot gnu.org
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From: law at redhat dot com @ 2015-04-02 5:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65647
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-04-02
CC| |law at redhat dot com
Assignee|unassigned at gcc dot gnu.org |vmakarov at redhat dot com
Ever confirmed|0 |1
--- Comment #1 from Jeffrey A. Law <law at redhat dot com> ---
The dumps would seem to indicate LRA is stuck in a loop trying to reload
something.
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2015-04-02 5:25 ` law at redhat dot com
@ 2015-04-04 14:36 ` vmakarov at gcc dot gnu.org
2015-04-05 8:22 ` yroux at gcc dot gnu.org
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From: vmakarov at gcc dot gnu.org @ 2015-04-04 14:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65647
--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Sat Apr 4 14:35:59 2015
New Revision: 221867
URL: https://gcc.gnu.org/viewcvs?rev=221867&root=gcc&view=rev
Log:
2015-04-04 Vladimir Makarov <vmakarov@redhat.com>
PR target/65647
* lra-int.h (LRA_MAX_REMATERIALIZATION_PASSES): New. Add its
value checking.
(lra_rematerialization_iter): New.
* lra.c (lra): Initialize lra_rematerialization_iter.
Stop updating lra_constraint_new_regno_start after switching of
inheritance and rematerialization.
* lra-remat.c (lra_rematerialization_iter): New.
(lra_remat): Add printing pass iteration. Do rematerialization
only first LRA_MAX_REMATERIALIZATION_PASSES iterations.
2015-04-04 Vladimir Makarov <vmakarov@redhat.com>
PR target/65647
* gcc.target/arm/pr65647.c: New.
Added:
trunk/gcc/testsuite/gcc.target/arm/pr65647.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-int.h
trunk/gcc/lra-remat.c
trunk/gcc/lra.c
trunk/gcc/testsuite/ChangeLog
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2015-04-04 14:36 ` vmakarov at gcc dot gnu.org
@ 2015-04-05 8:22 ` yroux at gcc dot gnu.org
2015-04-05 8:23 ` yroux at gcc dot gnu.org
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From: yroux at gcc dot gnu.org @ 2015-04-05 8:22 UTC (permalink / raw)
To: gcc-bugs
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Yvan Roux <yroux at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |yroux at gcc dot gnu.org
--- Comment #4 from Yvan Roux <yroux at gcc dot gnu.org> ---
I was about to report the same issue which occurs during the build of videolan
x264 build. Vlad patch fixes the issue on trunk, but with that testcase the
problem is also present in 4.9 branch (it occurs this time in ARM mode on armv6
architecture).
To be backported on 4.9 the rematerialization code as to be removed from the
patch, I'll submit the patch on the mailing list.
command line to reproduce the problem:
cc1 -O3 -marm -march=armv6 -std=c99 a.c
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2015-04-05 8:22 ` yroux at gcc dot gnu.org
@ 2015-04-05 8:23 ` yroux at gcc dot gnu.org
2015-04-05 19:07 ` yroux at gcc dot gnu.org
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From: yroux at gcc dot gnu.org @ 2015-04-05 8:23 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #5 from Yvan Roux <yroux at gcc dot gnu.org> ---
Created attachment 35229
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35229&action=edit
testcase that fails also on 4.9
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@ 2015-04-05 19:07 ` yroux at gcc dot gnu.org
2015-04-05 22:01 ` jakub at gcc dot gnu.org
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To: gcc-bugs
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--- Comment #6 from Yvan Roux <yroux at gcc dot gnu.org> ---
Author: yroux
Date: Sun Apr 5 19:06:43 2015
New Revision: 221873
URL: https://gcc.gnu.org/viewcvs?rev=221873&root=gcc&view=rev
Log:
gcc/
2015-04-05 Yvan Roux <yvan.roux@linaro.org>
Backport from trunk r221867
2015-04-04 Vladimir Makarov <vmakarov@redhat.com>
PR target/65647
* lra.c (lra): Stop updating lra_constraint_new_regno_start after switching
off inheritance.
gcc/testsuite/
2015-04-05 Yvan Roux <yvan.roux@linaro.org>
Backport from trunk r221867
2015-04-04 Vladimir Makarov <vmakarov@redhat.com>
PR target/65647
* gcc.target/arm/pr65647.c: New.
* gcc.target/arm/pr65647-2.c: New.
Added:
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/arm/pr65647-2.c
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/arm/pr65647.c
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/lra.c
branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
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2015-04-05 19:07 ` yroux at gcc dot gnu.org
@ 2015-04-05 22:01 ` jakub at gcc dot gnu.org
2015-04-06 16:07 ` jgreenhalgh at gcc dot gnu.org
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From: jakub at gcc dot gnu.org @ 2015-04-05 22:01 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So fixed?
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2015-04-05 22:01 ` jakub at gcc dot gnu.org
@ 2015-04-06 16:07 ` jgreenhalgh at gcc dot gnu.org
2015-04-06 17:17 ` law at redhat dot com
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From: jgreenhalgh at gcc dot gnu.org @ 2015-04-06 16:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65647
James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jgreenhalgh at gcc dot gnu.org
--- Comment #8 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
The new testcase fails for ARM targets configured with --with-float-abi=hard .
.../gcc/testsuite/gcc.target/arm/pr65647.c:26:8: sorry, unimplemented:
Thumb-1 hard-float VFP ABI
The fix would be to add an explicit -mfloat-abi= option to the testcase, but I
can't guess from the bug report whether that should be soft or softfp. Could
somebody please confirm which it should be and patch the testcase on both
branches?
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2015-04-06 16:07 ` jgreenhalgh at gcc dot gnu.org
@ 2015-04-06 17:17 ` law at redhat dot com
2015-04-07 7:53 ` jakub at gcc dot gnu.org
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From: law at redhat dot com @ 2015-04-06 17:17 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #9 from Jeffrey A. Law <law at redhat dot com> ---
Either soft or softfp will trigger the failure. Given that it's just a compile
test, rather than link & run test, can we just add a -mfloat-abi=soft to the
test and avoid the dg-skip-if?
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2015-04-06 17:17 ` law at redhat dot com
@ 2015-04-07 7:53 ` jakub at gcc dot gnu.org
2015-04-07 7:55 ` terry.guo at arm dot com
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From: jakub at gcc dot gnu.org @ 2015-04-07 7:53 UTC (permalink / raw)
To: gcc-bugs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P1 |P3
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In any case, a remaining testsuite issue doesn't deserve P1 at this point.
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2015-04-07 7:53 ` jakub at gcc dot gnu.org
@ 2015-04-07 7:55 ` terry.guo at arm dot com
2015-04-07 8:01 ` yroux at gcc dot gnu.org
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From: terry.guo at arm dot com @ 2015-04-07 7:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65647
--- Comment #11 from Terry Guo <terry.guo at arm dot com> ---
(In reply to Jakub Jelinek from comment #10)
> In any case, a remaining testsuite issue doesn't deserve P1 at this point.
If nobody work on this, I will come up with a patch soon.
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2015-04-07 7:55 ` terry.guo at arm dot com
@ 2015-04-07 8:01 ` yroux at gcc dot gnu.org
2015-04-07 9:35 ` rguenth at gcc dot gnu.org
2015-04-07 9:41 ` terry.guo at arm dot com
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From: yroux at gcc dot gnu.org @ 2015-04-07 8:01 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #12 from Yvan Roux <yroux at gcc dot gnu.org> ---
> If nobody work on this, I will come up with a patch soon.
Ok Terry, beside the testsuite issue the problem is fixed for me.
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2015-04-07 8:01 ` yroux at gcc dot gnu.org
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2015-04-07 9:41 ` terry.guo at arm dot com
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From: rguenth at gcc dot gnu.org @ 2015-04-07 9:35 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65647
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is fixed, the testsuite bug is a separate issue.
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2015-04-07 9:35 ` rguenth at gcc dot gnu.org
@ 2015-04-07 9:41 ` terry.guo at arm dot com
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From: terry.guo at arm dot com @ 2015-04-07 9:41 UTC (permalink / raw)
To: gcc-bugs
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--- Comment #14 from Terry Guo <terry.guo at arm dot com> ---
The test case is already updated with -mfloat-abi=soft.
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