[Bug middle-end/77259] [6/7 Regression] ICE in emit_move_insn since r232167

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77259

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Sep  1 11:36:50 2016
New Revision: 239924

URL: https://gcc.gnu.org/viewcvs?rev=239924&root=gcc&view=rev
Log:
        Backported from mainline
        2016-08-17  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/77259
        * tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): If
        turning a call into __builtin_unreachable-like noreturn call, adjust
        gimple_call_set_fntype.
        * tree-cfgcleanup.c (fixup_noreturn_call): Remove lhs also if
        gimple_call_fntype has void return type.

        * g++.dg/ipa/devirt-52.C: New test.

Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/ipa/devirt-52.C
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/tree-cfgcleanup.c
    branches/gcc-6-branch/gcc/tree-ssa-pre.c