V4FMADDPS (AX), [Z0-AX], K1, Z7  // ERROR "invalid instruction"
	// Usage of suffixes for non-EVEX instructions.
	ADCB.Z $7, AL                    // ERROR "invalid instruction"
	ADCB.RU_SAE $7, AL               // ERROR "invalid instruction"
	ADCB.RU_SAE.Z $7, AL             // ERROR "invalid instruction"
	// Usage of rounding with invalid operands.
	VADDPD.RU_SAE X3, X2, K1, X1     // ERROR "unsupported rounding"

	{"32323(SP)(R8*4)", "32323(SP)(R8*4)"},
	{"+3(PC)", "3(PC)"},
	{"-1(DI)(BX*1)", "-1(DI)(BX*1)"},
	{"-3(PC)", "-3(PC)"},
	{"-64(SI)(BX*1)", "-64(SI)(BX*1)"},
	{"-96(SI)(BX*1)", "-96(SI)(BX*1)"},
	{"AL", "AL"},
	{"AX", "AX"},
	{"BP", "BP"},
	{"BX", "BX"},
	{"CX", "CX"},
	{"DI", "DI"},
	{"DX", "DX"},
	{"R10", "R10"},
	{"R10", "R10"},
	{"R11", "R11"},
	{"R12", "R12"},
	{"R13", "R13"},

	"VS":  arm.C_SCOND_VS,
	"VC":  arm.C_SCOND_VC,
	"HI":  arm.C_SCOND_HI,
	"LS":  arm.C_SCOND_LS,
	"GE":  arm.C_SCOND_GE,
	"LT":  arm.C_SCOND_LT,
	"GT":  arm.C_SCOND_GT,
	"LE":  arm.C_SCOND_LE,
	"AL":  arm.C_SCOND_NONE,
	"U":   arm.C_UBIT,
	"S":   arm.C_SBIT,
	"W":   arm.C_WBIT,
	"P":   arm.C_PBIT,
	"PW":  arm.C_WBIT | arm.C_PBIT,
	"WP":  arm.C_WBIT | arm.C_PBIT,
	"F":   arm.C_FBIT,

	CBNZ R7, -1(PC)                            // e7ffffb5
	CBZW R15, -1(PC)                           // efffff34
	CBZ R1, -1(PC)                             // e1ffffb4
	CCMN MI, ZR, R1, $4                        // e44341ba
	CCMNW AL, R26, $20, $11                    // 4beb543a
	CCMN PL, R24, $6, $1                       // 015b46ba
	CCMNW EQ, R20, R6, $6                      // 8602463a
	CCMN LE, R30, R12, $6                      // c6d34cba

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

}

func archX86(linkArch *obj.LinkArch) *Arch {
	register := make(map[string]int16)
	// Create maps for easy lookup of instruction names etc.
	for i, s := range x86.Register {
		register[s] = int16(i + x86.REG_AL)
	}
	// Pseudo-registers.
	register["SB"] = RSB
	register["FP"] = RFP
	register["PC"] = RPC
	if linkArch == &x86.Linkamd64 {
		// Alias g to R14
		register["g"] = x86.REGG
	}