Method setArg

instructions.go:139–141

(pos, size uint, arg int)

func (i instruction) arg(pos, size uint) int { return int(i >> pos & mask1(size, 0)) }
func (i *instruction) setOpCode(op opCode)   { i.setArg(posOp, sizeOp, int(op)) }
func (i *instruction) setArg(pos, size uint, arg int) {
	*i = *i&mask0(size, pos) | instruction(arg)<<pos&mask1(size, pos)
}

// Note: the gc optimizer cannot inline through multiple function calls. Manually inline for now.
// func (i instruction) a() int   { return i.arg(posA, sizeA) }