{name: "CMPL", argLength: 2, reg: gp2flags, asm: "CMPL", typ: "Flags"},                    // arg0 compare to arg1
		{name: "CMPW", argLength: 2, reg: gp2flags, asm: "CMPW", typ: "Flags"},                    // arg0 compare to arg1
		{name: "CMPB", argLength: 2, reg: gp2flags, asm: "CMPB", typ: "Flags"},                    // arg0 compare to arg1

	v_2 := v.Args[2]
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	b := v.Block
	typ := &b.Func.Config.Types
	// match: (CMPWload {sym} [off] ptr x mem)
	// result: (CMPW (MOVWload {sym} [off] ptr mem) x)
	for {
		off := auxIntToInt32(v.AuxInt)
		sym := auxToSym(v.Aux)
		ptr := v_0
		x := v_1
		mem := v_2
		v.reset(OpAMD64CMPW)

	ANDW	$0xFFFFFFF0, R2
	BYTE	$0x18	//lr	%r5,%r1
	BYTE	$0x51
	MOVW	R1, R7
	CMPBLE	R7, $22, L7
	RISBGN	$0, $15, $48, R3, R6
	RISBGN	$16, $31, $32, R2, R8
L2:
	MOVH	R5, R5
	MOVH	$0x7FEF, R1
	CMPW	R5, R1
	BGT	L1
	LDGR	R6, F2
	FMUL	F2, F0
	RISBGZ	$57, $59, $3, R4, R4
	FMOVD	80(R9), F2
	MOVD	$·logxm<>+0(SB), R7
	ADD	R7, R4
	FMOVD	72(R9), F4
	WORD	$0xED004000	//madb	%f2,%f0,0(%r4)
	BYTE	$0x20

	MOVD $0, R_CNT
	MOVD $0, R_ZERO

loop:
	// Read 1-byte from input and compare.
	// Note: avoid putting LOCGR in critical path.
	MOVBZ (R_PTR), R_VAL
	MOVD  $1, R_TMP
	MOVD  $1(R_PTR), R_PTR
	CMPW  R_VAL, R_CHAR
	LOCGR $NE, R_ZERO, R_TMP // select 0 if no match (1 if there is a match)
	ADD   R_TMP, R_CNT       // accumulate 64-bit result

	// Repeat until all bytes have been checked.
	BRCTG R_LEN, loop

var x32 [2]uint32
var x64 [2]uint64

func compMem1() int {
	// amd64:`CMPB\tcommand-line-arguments.x\+1\(SB\), [$]0`
	if x[1] {
		return 1
	}
	// amd64:`CMPB\tcommand-line-arguments.x8\+1\(SB\), [$]7`
	if x8[1] == 7 {
		return 1
	}
	// amd64:`CMPW\tcommand-line-arguments.x16\+2\(SB\), [$]7`
	if x16[1] == 7 {
		return 1
	}
	// amd64:`CMPL\tcommand-line-arguments.x32\+4\(SB\), [$]7`
	if x32[1] == 7 {
		return 1
	}

		// CMPx: compare arg0 to arg1.
		{name: "CMPQ", argLength: 2, reg: gp2flags, asm: "CMPQ", typ: "Flags"},
		{name: "CMPL", argLength: 2, reg: gp2flags, asm: "CMPL", typ: "Flags"},
		{name: "CMPW", argLength: 2, reg: gp2flags, asm: "CMPW", typ: "Flags"},
		{name: "CMPB", argLength: 2, reg: gp2flags, asm: "CMPB", typ: "Flags"},

		// CMPxconst: compare arg0 to auxint.

#ifndef GOARM64_LSE
	MOVBU	internal∕cpu·ARM64+const_offsetARM64HasATOMICS(SB), R4
	CBZ 	R4, load_store_loop
#endif
	MOVD	R1, R3
	CASALW	R3, (R0), R2
	CMP 	R1, R3
	CSET	EQ, R0
	MOVB	R0, ret+16(FP)
	RET
#ifndef GOARM64_LSE
load_store_loop:
	LDAXRW	(R0), R3
	CMPW	R1, R3
	BNE	ok
	STLXRW	R2, (R0), R3
	CBNZ	R3, load_store_loop
ok:
	CSET	EQ, R0
	MOVB	R0, ret+16(FP)
	RET
#endif

	"CMOVWLS",
	"CMOVWLT",
	"CMOVWMI",
	"CMOVWNE",
	"CMOVWOC",
	"CMOVWOS",
	"CMOVWPC",
	"CMOVWPL",
	"CMOVWPS",
	"CMPB",
	"CMPL",
	"CMPPD",
	"CMPPS",
	"CMPQ",
	"CMPSB",
	"CMPSD",
	"CMPSL",
	"CMPSQ",
	"CMPSS",
	"CMPSW",
	"CMPW",
	"CMPXCHG16B",
	"CMPXCHG8B",
	"CMPXCHGB",
	"CMPXCHGL",
	"CMPXCHGQ",
	"CMPXCHGW",
	"COMISD",
	"COMISS",
	"CPUID",

#ifdef NEEDS_ESPERM
	MOVD	$·rcon(SB), R11
	LVX	(R11), ESPERM   // Permute value for P8_ macros.
#endif

	// Assume len > 0 && len % blockSize == 0.
	CMPW	ENC, $0
	P8_LXVB16X(IVP, R0, IVEC)
	CMPU	ROUNDS, $10, CR1
	CMPU	ROUNDS, $12, CR2 // Only sizes 10/12/14 are supported.

	// Setup key in VSRs, and set loop count in CTR.
	LOAD_KEY(KEYP)
	SRD	$4, LEN
	MOVD	LEN, CTR

	BEQ	Lcbc_dec

		// Comparisons.
		{name: "CMP", argLength: 2, reg: gp2flags, asm: "CMP", typ: "Flags"},   // arg0 compare to arg1
		{name: "CMPW", argLength: 2, reg: gp2flags, asm: "CMPW", typ: "Flags"}, // arg0 compare to arg1

		{name: "CMPU", argLength: 2, reg: gp2flags, asm: "CMPU", typ: "Flags"},   // arg0 compare to arg1
		{name: "CMPWU", argLength: 2, reg: gp2flags, asm: "CMPWU", typ: "Flags"}, // arg0 compare to arg1