[Bug target/70947] regrename Go breakage on powerpc64

[amodra at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70947

--- Comment #2 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Mon May 16 04:51:21 2016
New Revision: 236264

URL: https://gcc.gnu.org/viewcvs?rev=236264&root=gcc&view=rev
Log:
[RS6000] Stop regrename twiddling with split-stack prologue

        PR target/70947
        * config/rs6000/rs6000.c (rs6000_expand_split_stack_prologue): Stop
        regrename modifying insns saving lr before __morestack call.
        * config/rs6000/rs6000.md (split_stack_return): Similarly for
        insns restoring lr after __morestack call.

Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/config/rs6000/rs6000.c
    branches/gcc-6-branch/gcc/config/rs6000/rs6000.md