[Bug target/91289] powerpc-eabi: Usage of -fstack-limit-symbol leads to internal compiler error during RTL pass

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91289

--- Comment #17 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Tue Nov  5 17:20:00 2019
New Revision: 277856

URL: https://gcc.gnu.org/viewcvs?rev=277856&root=gcc&view=rev
Log:
backport for PR91289

        Backport from trunk
        2019-10-26  Segher Boessenkool  <seg...@kernel.crashing.org>

        PR target/91289
        * config/rs6000/rs6000.c (rs6000_emit_allocate_stack): Don't add an
        immediate to r0; use r11 instead.  Save and restore r11 to r0 around
        this.

Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/config/rs6000/rs6000.c