var combineFirst = map[Op]bool{}

func init() {
	for k := range combine {
		combineFirst[k[0]] = true
	}
}

// needSplit contains instructions that should be postprocessed by splitLoad
// into a more-efficient two-instruction form.
var needSplit = map[Op]bool{
	OpAMD64CMPBloadidx1: true,
	OpAMD64CMPWloadidx1: true,
	OpAMD64CMPLloadidx1: true,
	OpAMD64CMPQloadidx1: true,