[Bug target/60800] -Ofast -ffast-math miscompiles 178.galgel in SPEC CPU 2K

[jamborm at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60800

--- Comment #2 from Martin Jambor jamborm at gcc dot gnu.org ---
Unfortunately, I could not replicate this with -Ofast -ffast-math
(isn't -ffast-math part of -Ofast?) and trunk revision 209179.

[Bug target/60800] -Ofast -ffast-math miscompiles 178.galgel in SPEC CPU 2K

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60800

Jakub Jelinek jakub at gcc dot gnu.org changed:

   What|Removed |Added

 CC||jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek jakub at gcc dot gnu.org ---
Can you please bisect it to a particular gcc commit and/or single 178.galgel
source file?

[Bug target/60800] -Ofast -ffast-math miscompiles 178.galgel in SPEC CPU 2K

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60800

--- Comment #4 from H.J. Lu hjl.tools at gmail dot com ---
-O3 -fstack-arrays -ffast-math also fails on both i686 and x86-64.

[Bug target/60800] -Ofast -ffast-math miscompiles 178.galgel in SPEC CPU 2K

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60800

H.J. Lu hjl.tools at gmail dot com changed:

   What|Removed |Added

Summary|-Ofast -ffast-math  |-Ofast -ffast-math
   |-march=corei7   |miscompiles 178.galgel in
   |-mtune=generic miscompiles  |SPEC CPU 2K
   |178.galgel in SPEC CPU 2K   |

--- Comment #1 from H.J. Lu hjl.tools at gmail dot com ---
Just -Ofast -ffast-math will miscompile 178.galgel.