// tail call is not counted as it does not save the return PC or need a frame
				return false
			}
		}
	}
	return true
}

// needRegister reports whether v needs a register.
func (v *Value) needRegister() bool {
	return !v.Type.IsMemory() && !v.Type.IsVoid() && !v.Type.IsFlags() && !v.Type.IsTuple()
}

func (s *regAllocState) init(f *Func) {
	s.f = f