[Bug tree-optimization/77605] wrong code at -O3 on x86_64-linux-gnu

2016-09-16 Thread setsunakun0 at hotmail dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77605

byuu  changed:

   What|Removed |Added

 CC||setsunakun0 at hotmail dot com

--- Comment #2 from byuu  ---
This bug is caused by tree-loop-vectorize, and it affects non-Linux platforms
as well (gcc version 5.1.0 (tdm64-1) Windows here.) It works correctly with -O3
-fno-tree-loop-vectorize. I've run into improperly generated code several times
due to this optimization, but was unable to produce such a succinct test case
for a bug report.

[Bug tree-optimization/77605] wrong code at -O3 on x86_64-linux-gnu

2016-09-16 Thread marxin at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77605

Martin Liška  changed:

   What|Removed |Added

   Keywords||wrong-code
 Status|UNCONFIRMED |NEW
   Last reconfirmed||2016-09-16
 CC||marxin at gcc dot gnu.org
 Ever confirmed|0   |1
  Known to fail||5.4.0, 6.2.0

--- Comment #1 from Martin Liška  ---
Confirmed.