// ppc64le:"MOVW",-"MOVH",-"SRW"
	p.a = uint16(x)
	// amd64:-"MOVW",-"SHRL"
	// arm64:-"MOVH",-"UBFX"
	// ppc64le:-"MOVH",-"SRW"
	p.b = uint16(x >> 16)
}
func store16be(p *struct{ a, b uint16 }, x uint32) {
	// ppc64:"MOVW",-"MOVH",-"SRW"
	// s390x:"MOVW",-"MOVH",-"SRW"
	p.a = uint16(x >> 16)
	// ppc64:-"MOVH",-"SRW"
	// s390x:-"MOVH",-"SRW"
	p.b = uint16(x)
}

	c[1] = c[((v>>7)&0x3F)<<7]
}

func checkShiftMask(a uint32, b uint64, z []uint32, y []uint64) {
	_ = y[128]
	_ = z[128]
	// ppc64x: -"MOVBZ", -"SRW", "RLWNM"
	z[0] = uint32(uint8(a >> 5))
	// ppc64x: -"MOVBZ", -"SRW", "RLWNM"
	z[1] = uint32(uint8((a >> 4) & 0x7e))
	// ppc64x: "RLWNM\t[$]25, R[0-9]+, [$]27, [$]29, R[0-9]+"
	z[2] = uint32(uint8(a>>7)) & 0x1c
	// ppc64x: -"MOVWZ"

	XORW	-1(R1), R2            // e3201fffff57

	// shift and rotate instructions
	SRD	$4, R4, R7              // eb740004000c
	SRD	R1, R4, R7              // eb741000000c
	SRW	$4, R4, R7              // eb74000400de
	SRW	R1, R4, R7              // eb74100000de
	SLW	$4, R3, R6              // eb63000400df
	SLW	R2, R3, R6              // eb63200000df
	SLD	$4, R3, R6              // eb630004000d

		{name: "SRAW", argLength: 2, reg: gp21cxer, asm: "SRAW"}, // signed arg0 >> (arg1&63), 32 bit width
		{name: "SRD", argLength: 2, reg: gp21, asm: "SRD"},       // unsigned arg0 >> (arg1&127), 64 bit width
		{name: "SRW", argLength: 2, reg: gp21, asm: "SRW"},       // unsigned arg0 >> (arg1&63), 32 bit width
		{name: "SLD", argLength: 2, reg: gp21, asm: "SLD"},       // arg0 << (arg1&127), 64 bit width