[Bug rtl-optimization/55845] [4.8 Regression] 454.calculix miscompares with -march=btver2 -O3 -ffastmath -fschedule-insns -mvzeroupper for test data run

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55845



Uros Bizjak <ubizjak at gmail dot com> changed:



           What    |Removed                     |Added

----------------------------------------------------------------------------

           Keywords|                            |wrong-code

   Target Milestone|---                         |4.8.0

            Summary|454.calculix miscompares    |[4.8 Regression]

                   |with -march=btver2 -O3      |454.calculix miscompares

                   |-ffastmath -fschedule-insns |with -march=btver2 -O3

                   |-mvzeroupper for test data  |-ffastmath -fschedule-insns

                   |run                         |-mvzeroupper for test data

                   |                            |run



--- Comment #8 from Uros Bizjak <ubizjak at gmail dot com> 2013-01-04 09:35:12 
UTC ---

(In reply to comment #7)



> Sorry , my intention was just know if we have some flags to  disable this 
> pass.



It looks to me that -fno-crossjumping should do the trick.