[Bug bootstrap/58521] [4.9 Regression] bootstrap failure: ICE in mem_ref_in_stmt, at tree-ssa-loop-im.c:677

["congh at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58521

--- Comment #9 from congh at gcc dot gnu.org ---
Author: congh
Date: Thu Sep 26 01:36:49 2013
New Revision: 202932

URL: http://gcc.gnu.org/viewcvs?rev=202932&root=gcc&view=rev
Log:
2013-09-24  Cong Hou  <congh@google.com>

    Backport from mainline:
    2013-09-24  Richard Biener  <rguenther@suse.de>

    PR middle-end/58513
    * tree.c (reference_alias_ptr_type): Move ...
    * alias.c (reference_alias_ptr_type): ... here and implement
    in terms of the new reference_alias_ptr_type_1.
    (ref_all_alias_ptr_type_p): New helper.
    (get_deref_alias_set_1): Drop flag_strict_aliasing here,
    use ref_all_alias_ptr_type_p.
    (get_deref_alias_set): Add flag_strict_aliasing check here.
    (reference_alias_ptr_type_1): New function, split out from ...
    (get_alias_set): ... here.
    (alias_ptr_types_compatible_p): New function.
    * alias.h (reference_alias_ptr_type): Declare.
    (alias_ptr_types_compatible_p): Likewise.
    * tree.h (reference_alias_ptr_type): Remove.
    * fold-const.c (operand_equal_p): Use alias_ptr_types_compatible_p
    to compare MEM_REF alias types.

    2013-09-25  Richard Biener  <rguenther@suse.de>

    PR middle-end/58521
    * tree.c (iterative_hash_expr): Remove MEM_REF special handling.

2013-09-24  Cong Hou  <congh@google.com>

    Backport from mainline:
    2013-09-24  Richard Biener  <rguenther@suse.de>

    PR middle-end/58513
    * g++.dg/vect/pr58513.cc: New testcase.



Modified:
    branches/google/gcc-4_8/gcc/ChangeLog
    branches/google/gcc-4_8/gcc/alias.c
    branches/google/gcc-4_8/gcc/alias.h
    branches/google/gcc-4_8/gcc/fold-const.c
    branches/google/gcc-4_8/gcc/testsuite/ChangeLog
    branches/google/gcc-4_8/gcc/tree.c
    branches/google/gcc-4_8/gcc/tree.h