[Bug target/69888] ICE: SIGSEGV in decide_alg (i386.c:26169) due to infinite (?) recursion with -minline-all-stringops -mmemset-strategy=no_stringop:-1:noalign

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69888

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 30 12:39:20 2016
New Revision: 234560

URL: https://gcc.gnu.org/viewcvs?rev=234560&root=gcc&view=rev
Log:
        Backported from mainline
        2016-03-04  Jakub Jelinek  <jakub@redhat.com>

        PR target/70062
        * config/i386/i386.c (decide_alg): Add RECUR argument.  Revert
        2016-02-22 changes, instead don't recurse if RECUR is already true.
        Don't change *dynamic_check if RECUR.  Adjust recursive caller
        to pass true to the new argument.
        (ix86_expand_set_or_movmem): Adjust decide_alg caller.

        * gcc.target/i386/pr70062.c: New test.

        2016-02-22  Jakub Jelinek  <jakub@redhat.com>

        PR target/69888
        * config/i386/i386.c (decide_alg): Ensure we don't recurse with
        identical arguments.  Formatting and spelling fixes.

        * gcc.target/i386/pr69888.c: New test.

Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr69888.c
    branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr70062.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/config/i386/i386.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog