[Bug target/80966] ICE with -fstack-limit-register and large frames

["segher at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80966

--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Tue Jun 27 21:45:45 2017
New Revision: 249711

URL: https://gcc.gnu.org/viewcvs?rev=249711&root=gcc&view=rev
Log:
Those two changes aren't actually applicable to 5.  Sorry for the noise.


        Revert:
        Backports from trunk:

        2017-04-12  Segher Boessenkool  <segher@kernel.crashing.org>
        PR target/80382
        * config/rs6000/sync.md (atomic_load<mode>, atomic_store<mode): Test
        for quad_address_p for TImode, instead of just not indexed_address.

        2017-06-09  Segher Boessenkool  <segher@kernel.crashing.org>
        PR target/80966
        * config/rs6000/rs6000.c (rs6000_emit_allocate_stack): Assert that
        gen_add3_insn did not fail.
        * config/rs6000/rs6000.md (add<mode>3): If asked to add a constant to
        r0, construct that number in a temporary reg and add that reg to r0.
        If asked to put the result in r0 as well, fail.


        Revert:
        Backport from trunk:

        2017-06-09  Segher Boessenkool  <segher@kernel.crashing.org>
        PR target/80966
        * gcc.target/powerpc/stack-limit.c: New testcase.

Removed:
    branches/gcc-5-branch/gcc/testsuite/gcc.target/powerpc/stack-limit.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/config/rs6000/rs6000.c
    branches/gcc-5-branch/gcc/config/rs6000/rs6000.md
    branches/gcc-5-branch/gcc/config/rs6000/sync.md
    branches/gcc-5-branch/gcc/testsuite/ChangeLog