mapfast64
	mapfast64ptr
	mapfaststr
	nmapfast
)

type mapnames [nmapfast]string

func mkmapnames(base string, ptr string) mapnames {
	return mapnames{base, base + "_fast32", base + "_fast32" + ptr, base + "_fast64", base + "_fast64" + ptr, base + "_faststr"}
}

var mapaccess1 = mkmapnames("mapaccess1", "")
var mapaccess2 = mkmapnames("mapaccess2", "")
var mapassign = mkmapnames("mapassign", "ptr")

	pos := outerPos
	if ir.HasUniquePos(n) {
		pos = n.Pos()
	}
	// Most map calls need to take the address of the key.
	// Exception: map*_fast* calls. See golang.org/issue/19015.
	alg := mapfast(t)
	if alg == mapslow {
		return o.addrTemp(n)
	}
	var kt *types.Type
	switch alg {
	case mapfast32:
		kt = types.Types[types.TUINT32]