[Bug target/59726] [4.9 Regression] r206148 exposes broken vec_perm for big-endian aarch64; ICE at -O3

[Bug target/59726] [4.9 Regression] r206148 exposes broken vec_perm for big-endian aarch64; ICE at -O3

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59726

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|aarch64_be                  |aarch64_be-*-*
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-08
   Target Milestone|---                         |4.9.0
            Summary|[4.9 Regression AArch64_be] |[4.9 Regression] r206148
                   |r206148 (PR                 |exposes broken vec_perm for
                   |tree-optimization/59544)    |big-endian aarch64; ICE at
                   |causes ICE at -O3           |-O3
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to christophe.lyon from comment #0)
> Commit 206148 (PR tree-optimization/59544) causes regressions on AArch64 BE
> target (aarch64_be-none-elf) in testcases:

Actually this just exposes the problem with the backend where vec_perm is
broken for BE.

[Bug target/59726] [4.9 Regression] r206148 exposes broken vec_perm for big-endian aarch64; ICE at -O3

[ramana at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59726

Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |ramana at gcc dot gnu.org
         Resolution|---                         |FIXED

--- Comment #2 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
For 4.9 we just ended up disabling the vec_perm support for AArch64 BE, thanks
to this patch - http://gcc.gnu.org/ml/gcc-patches/2014-01/msg00988.html

For the next stage1 Tejas had a patch that tried to fix these up properly in
the backend.

http://gcc.gnu.org/ml/gcc-patches/2014-02/msg01334.html

Therefore on that ground I think this should be closed as I don't see this
testsuite failures on aarch64_be today.

ramana