------- Additional Comments From dje at gcc dot gnu dot org 2005-09-18 15:57 ------- Generating cmpw to different CRs instead of a sequence operating on GPRs does not help unless bool variables can be assigned to CRs. Using cmpw currently causes GCC to move the result from a CR to a GPR using mfcr and a shift -- the same number of instructions as the GPR sequence (now using cntlzw). Without bools assigned to CRs and using crand instruction, cmpw is not a win for performance or code size by itself. Using CRs to store bool user variables is on the list of useful enhancements.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20614
