var state uint32

	// Iterate through declarations. Autos are sorted in decreasing
	// frame offset order.
	for _, n := range e.curfn.Dcl {
		if !n.Needzero() {
			continue
		}
		if n.Class != ir.PAUTO {
			e.Fatalf(n.Pos(), "needzero class %d", n.Class)
		}
		if n.Type().Size()%int64(types.PtrSize) != 0 || n.FrameOffset()%int64(types.PtrSize) != 0 || n.Type().Size() == 0 {