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Subject: [Bug tree-optimization/46302] [4.6 Regression] Program with virtual public inheritance crashes at O3
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46302

--- Comment #9 from Martin Jambor <jamborm at gcc dot gnu.org> 2011-01-14 23:01:02 UTC ---
Author: jamborm
Date: Fri Jan 14 23:00:59 2011
New Revision: 168825

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168825
Log:
2011-01-14  Martin Jambor  <mjambor@suse.cz>

    PR tree-optimization/45934
    PR tree-optimization/46302
    * ipa-prop.c (type_change_info): New type.
    (stmt_may_be_vtbl_ptr_store): New function.
    (check_stmt_for_type_change): Likewise.
    (detect_type_change): Likewise.
    (detect_type_change_ssa): Likewise.
    (compute_complex_assign_jump_func): Check for dynamic type change.
    (compute_complex_ancestor_jump_func): Likewise.
    (compute_known_type_jump_func): Likewise.
    (compute_scalar_jump_functions): Likewise.
    (ipa_analyze_virtual_call_uses): Likewise.
    (ipa_analyze_node): Push and pop cfun, set current_function_decl.

    * testsuite/g++.dg/ipa/devirt-c-1.C: New test.
    * testsuite/g++.dg/ipa/devirt-c-2.C: Likewise.
    * testsuite/g++.dg/ipa/devirt-c-3.C: Likewise.
    * testsuite/g++.dg/ipa/devirt-c-4.C: Likewise.
    * testsuite/g++.dg/ipa/devirt-c-5.C: Likewise.
    * testsuite/g++.dg/ipa/devirt-c-6.C: Likewise.
    * testsuite/g++.dg/ipa/devirt-6.C: Likewise.
    * testsuite/g++.dg/ipa/devirt-d-1.C: Likewise.
    * testsuite/g++.dg/torture/pr45934.C: Likewise.


Added:
    trunk/gcc/testsuite/g++.dg/ipa/devirt-6.C
    trunk/gcc/testsuite/g++.dg/ipa/devirt-c-1.C
    trunk/gcc/testsuite/g++.dg/ipa/devirt-c-2.C
    trunk/gcc/testsuite/g++.dg/ipa/devirt-c-3.C
    trunk/gcc/testsuite/g++.dg/ipa/devirt-c-4.C
    trunk/gcc/testsuite/g++.dg/ipa/devirt-c-5.C
    trunk/gcc/testsuite/g++.dg/ipa/devirt-c-6.C
    trunk/gcc/testsuite/g++.dg/ipa/devirt-d-1.C
    trunk/gcc/testsuite/g++.dg/torture/pr45934.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-prop.c
    trunk/gcc/testsuite/ChangeLog