[Bug tree-optimization/82985] [7 Regression] ICC: in vn_nary_build_or_lookup_1, at tree-ssa-sccvn.c:1722

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82985

--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 15 12:50:39 2017
New Revision: 254766

URL: https://gcc.gnu.org/viewcvs?rev=254766&root=gcc&view=rev
Log:
2017-11-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/82985
        Backport from mainline
        2017-08-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/81790
        * tree-ssa-sccvn.c (vn_lookup_simplify_result): Handle both
        CONSTRUCTORs from simplifying and VN.

        * gcc.dg/torture/pr81790.c: New testcase.
        * g++.dg/torture/pr82985.C: Likewise.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/torture/pr82985.C
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr81790.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/gcc/tree-ssa-sccvn.c