------- Comment #4 from hjl dot tools at gmail dot com 2008-09-04 17:54 ------- (In reply to comment #3) > The problem may be in IRA_COVER_CLASSES. -mtune=core2 turns on > TARGET_INTER_UNIT_MOVES, which means move between mmx and 64bit > integer registers is cheaper than load/store. But IRA doesn't > handle it properly. >
Is there a way to tell IRA that moving between 2 register classes is cheaper than load/store? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37364
