[Bug target/77761] [7 Regression] wrong code with -fschedule-insns -mavx512f --param=max-pending-list-length=512

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77761

Uroš Bizjak  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |FIXED

--- Comment #4 from Uroš Bizjak  ---
Fixed.

[Bug target/77761] [7 Regression] wrong code with -fschedule-insns -mavx512f --param=max-pending-list-length=512

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77761

--- Comment #3 from Uroš Bizjak  ---
Author: vmakarov
Date: Tue Dec  6 20:02:03 2016
New Revision: 243316

URL: https://gcc.gnu.org/viewcvs?rev=243316=gcc=rev
Log:
2016-12-06  Vladimir Makarov  

target/77761
* lra-lives.c (process_bb_lives): Update biggest mode for
implicitly used hard reg.

2016-12-06  Vladimir Makarov  

target/77761
* testsuite/gcc.target/i386/pr77761.c: New.


Added:
trunk/gcc/testsuite/gcc.target/i386/pr77761.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-lives.c
trunk/gcc/testsuite/ChangeLog

[Bug target/77761] [7 Regression] wrong code with -fschedule-insns -mavx512f --param=max-pending-list-length=512

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77761

--- Comment #2 from Vladimir Makarov  ---
  Thanks for reporting this, Zdenek.

  After some time staring at the generated code I believe the problem is in
hard register splitting optimization.  LRA uses wrongly smaller mode for
splitting than necessary.

  I hope the patch will be ready on Tuesday.

[Bug target/77761] [7 Regression] wrong code with -fschedule-insns -mavx512f --param=max-pending-list-length=512

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77761

Jeffrey A. Law  changed:

   What|Removed |Added

   Priority|P3  |P1
 CC||law at redhat dot com

[Bug target/77761] [7 Regression] wrong code with -fschedule-insns -mavx512f --param=max-pending-list-length=512

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77761

Jakub Jelinek  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
   Last reconfirmed||2016-11-10
 CC||jakub at gcc dot gnu.org,
   ||vmakarov at gcc dot gnu.org
 Ever confirmed|0   |1

--- Comment #1 from Jakub Jelinek  ---
Started with r238991.

[Bug target/77761] [7 Regression] wrong code with -fschedule-insns -mavx512f --param=max-pending-list-length=512

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77761

Richard Biener  changed:

   What|Removed |Added

   Target Milestone|--- |7.0