[Bug middle-end/57073] __builtin_powif (-1.0, k) should be optimized to "1.0 - 2.0 * (K%2)"

[tkoenig at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57073



Thomas Koenig <tkoenig at gcc dot gnu.org> changed:



           What    |Removed                     |Added

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  Attachment #29968|0                           |1

        is obsolete|                            |



--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2013-05-02 
19:56:33 UTC ---

Created attachment 30011

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30011

Patch that should work, but doesn't.



Here's the actual patch that fails, without the Fortran

front end part.