return v
	}

	// Make a pass through the entry block looking for
	// OpArg{Int,Float}Reg ops. Record the slots they use in a table
	// ("sc"). We use a type-insensitive lookup for the slot table,
	// since the type we get from the ABI analyzer won't always match
	// what the compiler uses when creating OpArg{Int,Float}Reg ops.
	for _, v := range f.Entry.Values {
		if v.Op == OpArgIntReg || v.Op == OpArgFloatReg {

		if p2.Op == OpAddr || p2.Op == OpLocalAddr || p2.Op == OpSP {
			return true
		}
		return (p2.Op == OpArg || p2.Op == OpArgIntReg) && p1.Args[0].Op == OpSP
	case OpArg, OpArgIntReg:
		if p2.Op == OpSP || p2.Op == OpLocalAddr {
			return true
		}
	case OpSP:
		return p2.Op == OpAddr || p2.Op == OpLocalAddr || p2.Op == OpArg || p2.Op == OpArgIntReg || p2.Op == OpSP
	}
	return false
}

					s.freeReg(s.GReg) // kick out the old value
				}
				s.assignReg(s.GReg, v, v)
				b.Values = append(b.Values, v)
				s.advanceUses(v)
				continue
			}
			if v.Op == OpArg {
				// Args are "pre-spilled" values. We don't allocate
				// any register here. We just set up the spill pointer to
				// point at itself and any later user will restore it to use it.
				s.values[v.ID].spill = v