return v >> (s & 31)
}

func rshMask32x64(v int32, s uint64) int32 {
	// arm64:"ASR",-"AND"
	// ppc64x:"ISEL",-"ORN"
	// riscv64:"SRAW","OR","SLTIU"
	// s390x:-"RISBGZ",-"AND",-"LOCGR"
	return v >> (s & 63)
}

func rsh5Mask32x64(v int32, s uint64) int32 {
	// riscv64:"SRAW",-"OR",-"SLTIU"
	return v >> (s & 31)
}

func lshMask64x32(v int64, s uint32) int64 {
	// arm64:"LSL",-"AND"

		{name: "SRAD", argLength: 2, reg: gp21cxer, asm: "SRAD"}, // signed arg0 >> (arg1&127), 64 bit width (note: 127, not 63!)
		{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