[Bug tree-optimization/71408] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71408

kugan at gcc dot gnu.org changed:

   What|Removed |Added

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

--- Comment #7 from kugan at gcc dot gnu.org ---
Fixed in trunk.

[Bug tree-optimization/71408] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71408

Jeffrey A. Law  changed:

   What|Removed |Added

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

[Bug tree-optimization/71408] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71408

--- Comment #6 from Jakub Jelinek  ---
So fixed?

[Bug tree-optimization/71408] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71408

--- Comment #5 from kugan at gcc dot gnu.org ---
Author: kugan
Date: Mon Jun  6 23:46:11 2016
New Revision: 237158

URL: https://gcc.gnu.org/viewcvs?rev=237158=gcc=rev
Log:
gcc/ChangeLog:

2016-06-07  Kugan Vivekanandarajah  

PR middle-end/71408
* tree-ssa-reassoc.c (zero_one_operation): Fix NEGATE_EXPR operand for
propagate_op_to_single_use.


gcc/testsuite/ChangeLog:

2016-06-07  Kugan Vivekanandarajah  

PR middle-end/71408
* gcc.dg/tree-ssa/pr71408.c: New test.


Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr71408.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-reassoc.c

[Bug tree-optimization/71408] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71408

--- Comment #4 from kugan at gcc dot gnu.org ---
Patch posted for review at
https://gcc.gnu.org/ml/gcc-patches/2016-06/msg00330.html

[Bug tree-optimization/71408] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71408

--- Comment #3 from kugan at gcc dot gnu.org ---
Looking into it. Looks like zero_one_operation is still broken.

[Bug tree-optimization/71408] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71408

Jakub Jelinek  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
   Last reconfirmed||2016-06-04
 CC||jakub at gcc dot gnu.org,
   ||kugan at gcc dot gnu.org
   Target Milestone|--- |7.0
Summary|wrong code at -Os and above |[7 Regression] wrong code
   |on x86_64-linux-gnu |at -Os and above on
   ||x86_64-linux-gnu
 Ever confirmed|0   |1

--- Comment #2 from Jakub Jelinek  ---
This started to ICE in r236564, the ICE got fixed in r236643, but it is
miscompiled already in that revision.