[Bug rtl-optimization/80385] [5/6 Regression] Segfault in commutative_operand_precedence() rtlanal.c:3373

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80385

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri May  5 21:54:52 2017
New Revision: 247701

URL: https://gcc.gnu.org/viewcvs?rev=247701&root=gcc&view=rev
Log:
        Backported from mainline
        2017-04-11  Jakub Jelinek  <jakub@redhat.com>

        PR rtl-optimization/80385
        * simplify-rtx.c (simplify_unary_operation_1): Don't transform
        (not (neg X)) into (plus X -1) for complex or non-integral modes.

        * g++.dg/opt/pr80385.C: New test.

Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/opt/pr80385.C
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/simplify-rtx.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog