[Bug debug/83084] [7 Regression] -fcompare-debug failure on ppc64le

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83084

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Dec 15 21:53:29 2017
New Revision: 255710

URL: https://gcc.gnu.org/viewcvs?rev=255710&root=gcc&view=rev
Log:
        Backported from mainline
        2017-11-22  Jakub Jelinek  <jakub@redhat.com>

        PR debug/83084
        * valtrack.c (propagate_for_debug_subst, propagate_for_debug): Reset
        debug insns if they would contain UNSPEC_VOLATILE or volatile asm.
        (dead_debug_insert_temp): Likewise, but also ignore even non-volatile
        asm.

        * g++.dg/opt/pr83084.C: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/opt/pr83084.C
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/gcc/valtrack.c