MOVWZ	4(R5),R9	// 4-7 bytes of p
	MOVD	R4,R10		// &tab[0]
	XOR	R7,R8,R7	// crc ^= byte[0:3]
	RLDICL	$40,R9,$56,R17	// p[7]
	SLD	$2,R17,R17	// p[7]*4
	RLDICL	$40,R7,$56,R8	// crc>>24
	SLD	$2,R8,R8	// crc>>24*4
	RLDICL	$48,R9,$56,R18	// p[6]
	SLD	$2,R18,R18	// p[6]*4
	MOVWZ	(R10)(R17),R21	// tab[0][p[7]]
	ADD	$1024,R10,R10	// tab[1]
	RLDICL	$56,R9,$56,R19	// p[5]
	SLD	$2,R19,R19	// p[5]*4:1
	MOVWZ	(R10)(R18),R22	// tab[1][p[6]]

				q.As = ASLD
				q.From.SetConst(int64(shift))
				q.To = p.To
				p.From.Offset >>= shift
				p = q
			} else if isPPC64DoublewordRotateMask(val) {
				// This constant is a mask value, generate MOVD $-1, Rto; RLDIC Rto, ^me, mb, Rto
				mb, me := encodePPC64RLDCMask(val)
				q := obj.Appendp(p, c.newprog)
				q.As = ARLDC
				q.AddRestSourceConst((^int64(me)) & 0x3F)
				q.AddRestSourceConst(int64(mb))
				q.From = p.To

	// ppc64x:-".*RLWINM",-".*RLDICR",".*CLRLSLDI"
	f := tab[byte(v)^b]
	// ppc64x:-".*RLWINM",-".*RLDICR",".*CLRLSLDI"
	f += tab[byte(v)&b]
	// ppc64x:-".*RLWINM",-".*RLDICR",".*CLRLSLDI"
	f += tab[byte(v)|b]
	// ppc64x:-".*RLWINM",-".*RLDICR",".*CLRLSLDI"
	f += tab[uint16(v)&h]
	// ppc64x:-".*RLWINM",-".*RLDICR",".*CLRLSLDI"
	f += tab[uint16(v)^h]

More recently, Go opcodes were added which map directly onto the PPC64 opcodes. It is
recommended to use the newer opcodes to avoid confusion.

	RLDICL $0,R4,$15,R6		=>	rldicl r6,r4,0,15
	RLDICR $0,R4,$15,R6		=>	rldicr r6.r4,0,15

# Register naming

1. Special register usage in Go asm

The following registers should not be modified by user Go assembler code.

		v.AddArg2(y, z)
		return true
	}
	return false
}
func rewriteValuePPC64latelower_OpPPC64RLDICL(v *Value) bool {
	v_0 := v.Args[0]
	// match: (RLDICL [em] x:(SRDconst [s] a))
	// cond: (em&0xFF0000) == 0
	// result: (RLDICL [mergePPC64RLDICLandSRDconst(em, s)] a)
	for {
		em := auxIntToInt64(v.AuxInt)
		x := v_0
		if x.Op != OpPPC64SRDconst {
			break
		}
		s := auxIntToInt64(x.AuxInt)

	// arm64:"TST\t[$]63",-"UDIV",-"ASR",-"AND"
	// ppc64x:"ANDCC",-"RLDICL",-"SRAD",-"CMP"
	a := n1%64 == 0 // signed divisible

	// 386:"TESTL\t[$]63",-"DIVL",-"SHRL"
	// amd64:"TESTQ\t[$]63",-"DIVQ",-"SHRQ"
	// arm:"AND\t[$]63",-".*udiv",-"SRA"
	// arm64:"TST\t[$]63",-"UDIV",-"ASR",-"AND"
	// ppc64x:"ANDCC",-"RLDICL",-"SRAD",-"CMP"
	b := n2%64 != 0 // signed indivisible

	return a, b
}

	MOVD	m_curg(R21), R6
	CMP	g, R6
	BNE	noswitch

	MOVD	m_g0(R21), R7
	MOVD	(g_sched+gobuf_sp)(R7), R1	// Set SP to g0 stack

noswitch:
	SUB	$16, R1                 // Space for results
	RLDICR	$0, R1, $59, R1         // Align for C code
	MOVD	R12, CTR
	MOVD	R1, R4

	// Store g on gsignal's stack, so if we receive a signal
	// during VDSO code we can find the g.

		{name: "RLWMI", argLength: 2, reg: gp21a0, asm: "RLWMI", aux: "Int64", resultInArg0: true},      // "rlwimi" similar aux encoding as above
		{name: "RLDICL", argLength: 1, reg: gp11, asm: "RLDICL", aux: "Int64"},                          // Auxint is encoded similarly to RLWINM, but only MB and SH are valid. ME is always 63.

loadge16:
	ANDCC $15, R5, R9 // Find byte offset of sep
	ADD   R9, R6, R10 // Add sep len
	CMP   R10, $16    // Check if sep len+offset > 16
	BGT   sepcross16  // Sep crosses 16 byte boundary

	RLDICR $0, R5, $59, R8 // Adjust addr to 16 byte container
	VLOADSWAP(R8, R0, V0, V0) // Load 16 bytes @R8 into V0
	SLD    $3, R9          // Set up shift count for VSLO
	MTVSRD R9, V8         // Set up shift count for VSLO

	AMULLDVCC
	AMULLDV
	ARFID
	ARLDMI
	ARLDMICC
	ARLDIMI
	ARLDIMICC
	ARLDC
	ARLDCCC
	ARLDCR
	ARLDCRCC
	ARLDICR
	ARLDICRCC
	ARLDCL
	ARLDCLCC
	ARLDICL
	ARLDICLCC
	ARLDIC
	ARLDICCC
	ACLRLSLDI
	AROTL
	AROTLW
	ASLBIA
	ASLBIE
	ASLBMFEE
	ASLBMFEV
	ASLBMTE
	ASLD
	ASLDCC
	ASRD
	ASRAD
	ASRADCC
	ASRDCC
	AEXTSWSLI
	AEXTSWSLICC