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(combine_instructions): In initial scan of insns, handle a REG_INC note's affect… · 2dab894a(combine_instructions): In initial scan of insns, handle a REG_INC note's affect on sign bit copies and nonzero bits. (combine_instructions): In initial scan of insns, handle a REG_INC note's affect on sign bit copies and nonzero bits. (set_nonzero_bits_and_sign_copies): Treat a zero SET arg as a CLOBBER. From-SVN: r11762
Richard Kenner committed
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