BC $16,CR0LT,0(PC)              // 42000000
	BCL $16,CR0LT,0(PC)             // 42000001
	BC $18,CR0LT,0(PC)              // 42400000

	MOVD SPR(3), 4(R1)              // 7fe302a6fbe10004
	MOVD XER, 4(R1)                 // 7fe102a6fbe10004
	MOVD 4(R1), SPR(3)              // ebe100047fe303a6
	MOVD 4(R1), XER                 // ebe100047fe103a6
	PNOP                            // 0700000000000000

	// ARM64 only.
	if p.arch.Family != sys.ARM64 {
		return false
	}
	// R1.xxx
	return p.peek() == '.'
}

// registerReference parses a register given either the name, R10, or a parenthesized form, SPR(10).
func (p *Parser) registerReference(name string) (int16, bool) {
	r, present := p.arch.Register[name]
	if present {
		return r, true
	}
	if !p.arch.RegisterPrefix[name] {