[Bug tree-optimization/84803] [8 Regression] ICE from ifcvt_memrefs_wont_trap with -O3

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84803

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar 12 12:32:28 2018
New Revision: 258446

URL: https://gcc.gnu.org/viewcvs?rev=258446&root=gcc&view=rev
Log:
2018-03-12  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/84803
        * tree-if-conv.c (ifcvt_memrefs_wont_trap): Don't do anything
        for refs DR analysis didn't process.

        * gcc.dg/torture/pr84803.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr84803.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-if-conv.c