[Bug tree-optimization/79411] [5/6/7 Regression] ICE: SSA corruption (fail_abnormal_edge_coalesce)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79411

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 10 08:47:32 2017
New Revision: 245324

URL: https://gcc.gnu.org/viewcvs?rev=245324&root=gcc&view=rev
Log:
        PR tree-optimization/79411
        * tree-ssa-reassoc.c (is_reassociable_op): Return false if
        stmt operands are SSA_NAMEs used in abnormal phis.
        (can_reassociate_p): Return false if op is SSA_NAME used in abnormal
        phis.

        * gcc.c-torture/compile/pr79411.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr79411.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-reassoc.c