fmt.Fprintln(w, "func (o Op) SymEffect() SymEffect { return opcodeTable[o].symEffect }")
	fmt.Fprintln(w, "func (o Op) IsCall() bool { return opcodeTable[o].call }")
	fmt.Fprintln(w, "func (o Op) IsTailCall() bool { return opcodeTable[o].tailCall }")
	fmt.Fprintln(w, "func (o Op) HasSideEffects() bool { return opcodeTable[o].hasSideEffects }")
	fmt.Fprintln(w, "func (o Op) UnsafePoint() bool { return opcodeTable[o].unsafePoint }")

	}
	return c
}

// isLeaf reports whether f performs any calls.
func isLeaf(f *Func) bool {
	for _, b := range f.Blocks {
		for _, v := range b.Values {
			if v.Op.IsCall() && !v.Op.IsTailCall() {
				// 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 (o Op) String() string       { return opcodeTable[o].name }
func (o Op) SymEffect() SymEffect { return opcodeTable[o].symEffect }
func (o Op) IsCall() bool         { return opcodeTable[o].call }
func (o Op) IsTailCall() bool     { return opcodeTable[o].tailCall }
func (o Op) HasSideEffects() bool { return opcodeTable[o].hasSideEffects }
func (o Op) UnsafePoint() bool    { return opcodeTable[o].unsafePoint }