obj.APCALIGN,
			obj.APCDATA,
			obj.ADUFFZERO,
			obj.ADUFFCOPY:
			break

		case ARDTIMELW:
			opset(ARDTIMEHW, r0)
			opset(ARDTIMED, r0)

		case ACLO:
			opset(ACLZ, r0)

		case ATEQ:
			opset(ATNE, r0)

		case AMASKEQZ:
			opset(AMASKNEZ, r0)

		case ANOOP:
			opset(obj.AUNDEF, r0)

		case AAMSWAPW:
			for i := range atomicInst {

	{ALDREXD, C_SOREG, C_NONE, C_REG, 91, 4, 0, 0, 0, 0},
	{ASTREXD, C_SOREG, C_REG, C_REG, 92, 4, 0, 0, 0, 0},
	{APLD, C_SOREG, C_NONE, C_NONE, 95, 4, 0, 0, 0, 0},
	{obj.AUNDEF, C_NONE, C_NONE, C_NONE, 96, 4, 0, 0, 0, 0},
	{ACLZ, C_REG, C_NONE, C_REG, 97, 4, 0, 0, 0, 0},
	{AMULWT, C_REG, C_REG, C_REG, 98, 4, 0, 0, 0, 0},
	{AMULA, C_REG, C_REG, C_REGREG2, 99, 4, 0, 0, 0, C_SBIT},
	{AMULAWT, C_REG, C_REG, C_REGREG2, 99, 4, 0, 0, 0, 0},

			obj.APCDATA,
			obj.ADUFFZERO,
			obj.ADUFFCOPY:
			break

		case ACMOVN:
			opset(ACMOVZ, r0)

		case ACMOVT:
			opset(ACMOVF, r0)

		case ACLO:
			opset(ACLZ, r0)

		case ATEQ:
			opset(ATNE, r0)

		case AWSBH:
			opset(ASEB, r0)
			opset(ASEH, r0)

		case ADSBH:
			opset(ADSHD, r0)
		}
	}
}

	ASH3ADD & obj.AMask:   rIIIEncoding,
	ASH3ADDUW & obj.AMask: rIIIEncoding,
	ASLLIUW & obj.AMask:   iIEncoding,

	// 1.2: Basic Bit Manipulation (Zbb)
	AANDN & obj.AMask:  rIIIEncoding,
	ACLZ & obj.AMask:   rIIEncoding,
	ACLZW & obj.AMask:  rIIEncoding,
	ACPOP & obj.AMask:  rIIEncoding,
	ACPOPW & obj.AMask: rIIEncoding,
	ACTZ & obj.AMask:   rIIEncoding,
	ACTZW & obj.AMask:  rIIEncoding,