[Bug tree-optimization/82276] [8 Regression] -O2: ICE: SSA corruption during RTL pass: expand; at tree-ssa-coalesce.c:1010

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82276

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Sep 21 12:12:33 2017
New Revision: 253062

URL: https://gcc.gnu.org/viewcvs?rev=253062&root=gcc&view=rev
Log:
2017-09-21  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/82276
        PR tree-optimization/82244
        * tree-vrp.c (build_assert_expr_for): Set
        SSA_NAME_OCCURS_IN_ABNORMAL_PHI if the variable we assert on
        has it set.
        (remove_range_assertions): Revert earlier change.

        * gcc.dg/torture/pr82276.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr82276.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c