[Bug tree-optimization/87132] [9 Regression] Gcc miscompiles at -O2 on valid code

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87132

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Aug 29 14:13:20 2018
New Revision: 263959

URL: https://gcc.gnu.org/viewcvs?rev=263959&root=gcc&view=rev
Log:
2018-08-29  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/87132
        * tree-ssa-alias.c (get_continuation_for_phi): Do not translate
        when skipping defs reachable over backedges.

        * gcc.dg/torture/pr87132.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr87132.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-alias.c