package codegen

var wsp = [256]bool{
	' ':  true,
	'\t': true,
	'\n': true,
	'\r': true,
}

func zeroExtArgByte(ch [2]byte) bool {
	return wsp[ch[0]] // amd64:-"MOVBLZX\t..,.."
}

func zeroExtArgUint16(ch [2]uint16) bool {
	return wsp[ch[0]] // amd64:-"MOVWLZX\t..,.."

			"\tPINSRW	$index, (BP)(R8*4), xmm",
			"#define LOAD(off, reg) \\",
			"\tMOVBLZX	(off*4)(R12),	reg \\",
			"\tADDB	reg,		DX",
			"KEYROUND(X0, LOAD, 8, AX, BX, 0)",
		),
		"\n.MOVBLZX.(.BP.).(.DX.*.4.).,.R8.\n.\n.MOVBLZX.(.(.8.+.1.).*.4.).(.R12.).,.BX.\n.ADDB.BX.,.DX.\n.MOVB.R8.,.(.8.*.4.).(.R12.).\n.PINSRW.$.0.,.(.BP.).(.R8.*.4.).,.X0.\n",
	},
	{
		"taken #ifdef",
		lines(
			"#define A",
			"#ifdef A",

	// amd64: `ORQ\t[$]77, 64\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
	x[i+8] |= 77
	// amd64: `XORQ\t[$]77, 72\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*8\)`
	x[i+9] ^= 77
}

func idxCompare(i int) int {
	// amd64: `MOVBLZX\t1\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*1\), [A-Z]+[0-9]*`
	if x8[i+1] < x8[0] {
		return 0
	}
	// amd64: `MOVWLZX\t2\([A-Z]+[0-9]*\)\([A-Z]+[0-9]*\*2\), [A-Z]+[0-9]*`
	if x16[i+1] < x16[0] {
		return 0
	}

		{name: "MOVBLSX", argLength: 1, reg: gp11, asm: "MOVBLSX"}, // sign extend arg0 from int8 to int32
		{name: "MOVBLZX", argLength: 1, reg: gp11, asm: "MOVBLZX"}, // zero extend arg0 from int8 to int32
		{name: "MOVWLSX", argLength: 1, reg: gp11, asm: "MOVWLSX"}, // sign extend arg0 from int16 to int32

	"MAXSD",
	"MAXSS",
	"MFENCE",
	"MINPD",
	"MINPS",
	"MINSD",
	"MINSS",
	"MONITOR",
	"MOVAPD",
	"MOVAPS",
	"MOVB",
	"MOVBEL",
	"MOVBEQ",
	"MOVBEW",
	"MOVBLSX",
	"MOVBLZX",
	"MOVBQSX",
	"MOVBQZX",
	"MOVBWSX",
	"MOVBWZX",
	"MOVDDUP",
	"MOVHLPS",
	"MOVHPD",
	"MOVHPS",
	"MOVL",
	"MOVLHPS",
	"MOVLPD",
	"MOVLPS",
	"MOVLQSX",
	"MOVLQZX",

// Generic atomic operation implementation.
// AX already contains target function.
TEXT	racecallatomic<>(SB), NOSPLIT|NOFRAME, $0-0
	// Trigger SIGSEGV early.
	MOVQ	16(SP), R12
	MOVBLZX	(R12), R13
	// Check that addr is within [arenastart, arenaend) or within [racedatastart, racedataend).
	CMPQ	R12, runtime·racearenastart(SB)
	JB	racecallatomic_data
	CMPQ	R12, runtime·racearenaend(SB)

		{name: "MOVBQSX", argLength: 1, reg: gp11, asm: "MOVBQSX"}, // sign extend arg0 from int8 to int64
		{name: "MOVBQZX", argLength: 1, reg: gp11, asm: "MOVBLZX"}, // zero extend arg0 from int8 to int64
		{name: "MOVWQSX", argLength: 1, reg: gp11, asm: "MOVWQSX"}, // sign extend arg0 from int16 to int64

	MOVWLZX R11, R11                        // 450fb7db
	MOVBLZX (BX), DX                        // 0fb613
	MOVBLZX (R11), DX                       // 410fb613
	MOVBLZX DL, DX                          // 0fb6d2
	MOVBLZX R11, DX                         // 410fb6d3
	MOVBLZX (BX), R11                       // 440fb61b
	MOVBLZX (R11), R11                      // 450fb61b
	MOVBLZX DL, R11                         // 440fb6da

		v.Aux = symToAux(mergeSym(sym1, sym2))
		v.AddArg2(base, mem)
		return true
	}
	return false
}
func rewriteValue386_Op386MOVBLZX(v *Value) bool {
	v_0 := v.Args[0]
	b := v.Block
	// match: (MOVBLZX x:(MOVBload [off] {sym} ptr mem))
	// cond: x.Uses == 1 && clobber(x)
	// result: @x.Block (MOVBload <v.Type> [off] {sym} ptr mem)
	for {
		x := v_0
		if x.Op != Op386MOVBload {
			break
		}

		reg: regInfo{
			inputs: []inputInfo{
				{0, 239}, // AX CX DX BX BP SI DI
			},
			outputs: []outputInfo{
				{0, 239}, // AX CX DX BX BP SI DI
			},
		},
	},
	{
		name:   "MOVBLZX",
		argLen: 1,
		asm:    x86.AMOVBLZX,
		reg: regInfo{
			inputs: []inputInfo{
				{0, 239}, // AX CX DX BX BP SI DI
			},
			outputs: []outputInfo{
				{0, 239}, // AX CX DX BX BP SI DI