MOVD res+0(FP), P3ptr
	MOVD a+8(FP), P1ptr
	MOVD b+16(FP), P2ptr
	MOVD $16, R16
	MOVD $32, R17
	MOVD $48, R18
	MOVD $56, R21
	MOVD $64, R19
	MOVD $80, R20
	// cond is R1 + 24 (cond offset) + 32
	LXVDSX (R1)(R21), SEL
	VSPLTISB $0, ZER
	// SEL controls whether to store a or b
	VCMPEQUD SEL, ZER, SEL

	LXVD2X (P1ptr+R0), X1H
	LXVD2X (P1ptr+R16), X1L
	LXVD2X (P1ptr+R17), Y1H
	LXVD2X (P1ptr+R18), Y1L

	LXVD2X (R3)(R4), VS1            // 7c241e98
	LXVD2X (R3)(R0), VS1            // 7c201e98
	LXVD2X (R3), VS1                // 7c201e98
	LXVDSX (R3)(R4), VS1            // 7c241a98
	LXVDSX (R3)(R0), VS1            // 7c201a98
	LXVDSX (R3), VS1                // 7c201a98
	LXVH8X (R3)(R4), VS1            // 7c241e58
	LXVH8X (R3)(R0), VS1            // 7c201e58
	LXVH8X (R3), VS1                // 7c201e58