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* bitmap.h (nBITMAP_WORD_BITS): Remove. (BITMAP_WORD_BITS): Force unsigned by use of 1u. (BITMAP_ELEMENT_WORDS, BITMAP_ELEMENT_ALL_BITS): Remove unnecessary casts. (bitmap_first_set_bit): Return unsigned, use ctzl. (bitmap_last_set_bit): Remove. * bitmap.c (bitmap_element_zerop, bitmap_copy): Make iterator unsigned. (bitmap_first_set_bit): Return unsigned, require non-empty bitmap, remove special case code for two word elements. (bitmap_last_set_bit): Remove. * ra-build.c (livethrough_conflicts_bb): Replace unnecessary use of bitmap_first_set_bit with bitmap_empty_p. * tree-outof-ssa.c (analyze_edges_for_bb): Likewise. * tree-ssa-pre.c (bitmap_print_value): Use simple flag rather than bitmap_last_bit_set. From-SVN: r90478
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