[Bug target/63661] [4.9/5 Regression] -O2 miscompiles on OSX 10.10 Yosemite

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63661

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.8.3
   Target Milestone|---                         |4.9.2
            Summary|-O2 miscompiles on OSX      |[4.9/5 Regression] -O2
                   |10.10 Yosemite              |miscompiles on OSX 10.10
                   |                            |Yosemite
      Known to fail|                            |4.9.1, 5.0

--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
4.8 doesn't know nehalem but works with -mtune=native (where 4.9 and 5 break).