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[Bug tree-optimization/36346] call clobbering computation uses TBAA-pruned points-to-sets



------- Comment #2 from rguenth at gcc dot gnu dot org  2008-05-29 10:32 -------
Subject: Bug 36346

Author: rguenth
Date: Thu May 29 10:31:58 2008
New Revision: 136152

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=136152
Log:
2008-05-29  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/36343
        PR tree-optimization/36346
        PR tree-optimization/36347
        * tree-flow.h (clobber_what_p_points_to): Declare.
        * tree-ssa-structalias.c (set_uids_in_ptset): Whether the
        pointed-to variable is dereferenced is irrelevant to whether
        the pointer can access the pointed-to variable.
        (clobber_what_p_points_to): New function.
        * tree-ssa-alias.c (set_initial_properties): Use it.
        * tree-ssa.c (verify_flow_sensitive_alias_info): Adjust
        call clobber check for NMTs.

        * gcc.c-torture/execute/pr36343.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr36343.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-flow.h
    trunk/gcc/tree-ssa-alias.c
    trunk/gcc/tree-ssa-structalias.c
    trunk/gcc/tree-ssa.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36346


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