[Bug rtl-optimization/82913] [8 Regression] ICE: Segmentation fault in try_merge_compare

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82913

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov  9 23:58:51 2017
New Revision: 254614

URL: https://gcc.gnu.org/viewcvs?rev=254614&root=gcc&view=rev
Log:
        PR rtl-optimization/82913
        * compare-elim.c (try_merge_compare): Punt if def_insn is not
        single set.

        * gcc.c-torture/compile/pr82913.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr82913.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/compare-elim.c
    trunk/gcc/testsuite/ChangeLog