[Bug tree-optimization/15878] a & b & ~a & ~b not optimized at the tree level

pinskia at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org
Tue Dec 13 04:19:00 GMT 2005



------- Comment #3 from pinskia at gcc dot gnu dot org  2005-12-13 04:18 -------
Fixed by:
2005-12-12  Jeff Law  <law@redhat.com>

        * tree-ssa-dom.c (simplify_rhs_and_lookup_avail_expr): Remove
        reassociation code.
        * passes.c (init_optimization_passes): Run reassociation again
        after loop optimizations.

2005-12-12  Daniel Berlin  <dberlin@dberlin.org>

        * tree-ssa-dom.c (thread_across_edge): Canonicalize condition
        if necessary.
        (optimize_stmt): Ditto.
        (canonicalize_comparison): New function.
        * tree-ssa-operands.c (swap_tree_operands): Make external.
        (get_expr_operands): Stop auto-canonicalization.
        * tree-ssa-reassoc.c: Rewrite.
        (init_optimization_passes):
        * tree-flow.h (swap_tree_operands): Prototype.
        * Makefile.in (tree-ssa-reassoc.o): Update dependencies.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15878



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