[Bug c++/70594] [6 Regression] -fcompare-debug failure

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70594

--- Comment #49 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Apr 14 19:21:31 2016
New Revision: 234987

URL: https://gcc.gnu.org/viewcvs?rev=234987&root=gcc&view=rev
Log:
        PR c++/70594
        * ipa-utils.h (polymorphic_ctor_dtor_p): New prototype.
        * ipa-polymorphic-call.c (polymorphic_ctor_dtor_p): New function.
        (inlined_polymorphic_ctor_dtor_block_p): Use it.
        * tree-ssa-live.c (remove_unused_scope_block_p): When
        in_ctor_dtor_block, avoid discarding not just BLOCKs with
        BLOCK_ABSTRACT_ORIGIN being FUNCTION_DECL, but even when
        block_ultimate_origin is FUNCTION_DECL.
        (remove_unused_locals): If current_function_decl is
        polymorphic_ctor_dtor_p, pass initial true to
        remove_unused_scope_block_p' is_ctor_dtor_block.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-polymorphic-call.c
    trunk/gcc/ipa-utils.h
    trunk/gcc/tree-ssa-live.c