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

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Nov 22 10:02:19 2017
New Revision: 255051

URL: https://gcc.gnu.org/viewcvs?rev=255051&root=gcc&view=rev
Log:
        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:
    trunk/gcc/testsuite/g++.dg/opt/pr83084.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/valtrack.c

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