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2004-07-04 Daniel Berlin <dberlin@dberlin.org> * tree-ssa-pre.c (bb_value_sets): phi_gen, tmp_gen, new_sets now are bitmap_set_t's. (bitmap_insert_into_set): No point in inserting the value if it's invariant. (bitmap_set_contains): New function. (bitmap_set_replace_value): Add comment on why we do it this way. (set_contains): Removed. (bitmap_set_subtract_from_value_set): New name of set_subtract now that it's arguments are two different types of sets. Update callers. (bitmap_find_leader): Change algorithm used. (find_or_generate_expression): Update use of functions for new bitmap sets. (create_expression_by_pieces): Ditto. (insert_aux): Ditto. (insert): Ditto. (add_to_sets): Ditto. (init_pre): Ditto. (execute_pre): Ditto. (compute_avail): Ditto. Also ignore virtual phis. From-SVN: r84099
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