[Bug tree-optimization/87259] [9 Regression] ICE: error: definition in block 3 does not dominate use in block 2

2018-09-14 Thread ktkachov at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87259

ktkachov at gcc dot gnu.org changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution|--- |FIXED

--- Comment #4 from ktkachov at gcc dot gnu.org ---
Fixed.

[Bug tree-optimization/87259] [9 Regression] ICE: error: definition in block 3 does not dominate use in block 2

2018-09-14 Thread ktkachov at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87259

--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Fri Sep 14 13:13:14 2018
New Revision: 264312

URL: https://gcc.gnu.org/viewcvs?rev=264312=gcc=rev
Log:
[tree-ssa-mathopts] PR tree-optimization/87259: Call execute_cse_reciprocals_1
before trying optimize_recip_sqrt

PR tree-optimization/87259
PR lto/87283
(pass_cse_reciprocals::execute): Run optimize_recip_sqrt after
execute_cse_reciprocals_1 has tried transforming.

PR tree-optimization/87259
* gcc.dg/pr87259.c: New test.


Added:
trunk/gcc/testsuite/gcc.dg/pr87259.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-math-opts.c

[Bug tree-optimization/87259] [9 Regression] ICE: error: definition in block 3 does not dominate use in block 2

2018-09-13 Thread ktkachov at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87259

--- Comment #2 from ktkachov at gcc dot gnu.org ---
Patch posted at
https://gcc.gnu.org/ml/gcc-patches/2018-09/msg00640.html

[Bug tree-optimization/87259] [9 Regression] ICE: error: definition in block 3 does not dominate use in block 2

2018-09-11 Thread ktkachov at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87259

ktkachov at gcc dot gnu.org changed:

   What|Removed |Added

 Status|UNCONFIRMED |ASSIGNED
   Last reconfirmed||2018-09-11
   Assignee|unassigned at gcc dot gnu.org  |ktkachov at gcc dot 
gnu.org
   Target Milestone|--- |9.0
 Ever confirmed|0   |1

--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed. The transformation from r264126 isn't triggered here, but it looks
like the fact that execute_cse_reciprocals_1 didn't get to run on some of the
statements gives the ICE.
Testing a patch