[Bug tree-optimization/39506] PTA TBAA pruning wrong for -fargument-noalias-*

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2009-03-20 14:19 -------
Subject: Bug 39506

Author: rguenth
Date: Fri Mar 20 14:19:08 2009
New Revision: 144976

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=144976
Log:
2009-03-20  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/39506
        * tree-ssa-structalias.c (may_alias_p): Remove.
        (set_uids_in_ptset): Take the alias set to prune with as
        parameter.  Fold in the alias test of may_alias_p.
        (find_what_var_points_to): Decide upfront if we can prune.

Modified:
    branches/alias-improvements/gcc/ChangeLog.alias
    branches/alias-improvements/gcc/tree-ssa-structalias.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39506