BNE	cmp
	SUB	$8, R6
	// compare last 8 bytes
tail:
	MOVD	(R0)(R6), R4
	MOVD	(R2)(R6), R5
	CMP	R4, R5
	BEQ	samebytes
cmp:
	REV	R4, R4
	REV	R5, R5
	CMP	R4, R5
ret:
	MOVD	$1, R0
	CNEG	HI, R0, R0
	RET
small:
	TBZ	$3, R6, lt_8
	MOVD	(R0), R4
	MOVD	(R2), R5
	CMP	R4, R5
	BNE	cmp
	SUBS	$8, R6
	BEQ	samebytes
	ADD	$8, R0
	ADD	$8, R2
	SUB	$8, R6
	B	tail
lt_8:

	"CBZW",
	"CCMN",
	"CCMNW",
	"CCMP",
	"CCMPW",
	"CINC",
	"CINCW",
	"CINV",
	"CINVW",
	"CLREX",
	"CLS",
	"CLSW",
	"CLZ",
	"CLZW",
	"CMN",
	"CMNW",
	"CMP",
	"CMPW",
	"CNEG",
	"CNEGW",
	"CRC32B",
	"CRC32CB",
	"CRC32CH",
	"CRC32CW",
	"CRC32CX",
	"CRC32H",
	"CRC32W",
	"CRC32X",
	"CSEL",
	"CSELW",
	"CSET",
	"CSETM",
	"CSETMW",
	"CSETW",
	"CSINC",

	// CNEG <Wd>, <Wn>, <cond>
	{0xffe00c00, 0x5a800400, CNEG, instArgs{arg_Wd, arg_Wn, arg_cond_NotAllowALNV_Invert}, cneg_csneg_32_condsel_cond},
	// CSNEG <Wd>, <Wn>, <Wm>, <cond>
	{0xffe00c00, 0x5a800400, CSNEG, instArgs{arg_Wd, arg_Wn, arg_Wm, arg_cond_AllowALNV_Normal}, nil},
	// CNEG <Xd>, <Xn>, <cond>

	CINVW	AL, R2, R3                                       // ERROR "invalid condition"
	CINV	NV, R2, R3                                       // ERROR "invalid condition"
	CNEG	AL, R2, R3                                       // ERROR "invalid condition"
	CNEGW	NV, R2, R3                                       // ERROR "invalid condition"

	CMP R7>>23, R3                             // 7f5c47eb
	CNEGW PL, R9, R14                          // 2e45895a
	CSNEGW HS, R5, R9, R14                     // ae24895a
	CSNEG PL, R14, R21, R3                     // c35595da
	CNEG  LO, R7, R15                          // ef2487da
	CRC32B R17, R8, R16                        // 1041d11a
	CRC32H R3, R21, R27                        // bb46c31a
	CRC32W R22, R30, R9                        // c94bd61a

{"Name":"CNEG","Bits":"0|1|0|1|1|0|1|0|1|0|0|Rm:5|cond:4|0|1|Rn:5|Rd:5","Arch":"32-bit variant","Syntax":"CNEG <Wd>, <Wn>, <cond>","Code":"","Alias":"This instruction is an alias of the CSNEG instruction."},

	CSINV	HS, R1, R2, R3	// 232082da
	CSINVW	MI, R2, ZR, R2	// 42409f5a
	CINC	EQ, R4, R9	// 8914849a
	CINCW	PL, R2, ZR	// 5f44821a
	CINV	PL, R11, R22	// 76418bda
	CINVW	LS, R7, R13	// ed80875a
	CNEG	LS, R13, R7	// a7858dda
	CNEGW	EQ, R8, R13	// 0d15885a

// atomic ops
	LDARB	(R25), R2                            // 22ffdf08
	LDARH	(R5), R7                             // a7fcdf48

			rt = REGZERO
		}
		if r == obj.REG_NONE {
			r = REGZERO
		}
		o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | uint32(rt&31)

	case 18: /* csel cond,Rn,Rm,Rd; cinc/cinv/cneg cond,Rn,Rd; cset cond,Rd */
		o1 = c.oprrr(p, p.As)

		cond := SpecialOperand(p.From.Offset)
		if cond < SPOP_EQ || cond > SPOP_NV || (cond == SPOP_AL || cond == SPOP_NV) && p.From3Type() == obj.TYPE_NONE {