[Bug target/69868] vec_perm built-in is not handled by swap optimization on powerpc64le

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69868

Bill Schmidt <wschmidt at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #37759|0                           |1
        is obsolete|                            |

--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Created attachment 37787
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37787&action=edit
Refactored patch with testcase

Refactored patch, with testcase, ready to submit for GCC 7.