case OpRsh8x32:
		return rewriteValueMIPS_OpRsh8x32(v)
	case OpRsh8x64:
		return rewriteValueMIPS_OpRsh8x64(v)
	case OpRsh8x8:
		return rewriteValueMIPS_OpRsh8x8(v)
	case OpSelect0:
		return rewriteValueMIPS_OpSelect0(v)
	case OpSelect1:
		return rewriteValueMIPS_OpSelect1(v)
	case OpSignExt16to32:
		v.Op = OpMIPSMOVHreg
		return true
	case OpSignExt8to16:
		v.Op = OpMIPSMOVBreg

	case OpRsh8x32:
		return rewriteValueMIPS64_OpRsh8x32(v)
	case OpRsh8x64:
		return rewriteValueMIPS64_OpRsh8x64(v)
	case OpRsh8x8:
		return rewriteValueMIPS64_OpRsh8x8(v)
	case OpSelect0:
		return rewriteValueMIPS64_OpSelect0(v)
	case OpSelect1:
		return rewriteValueMIPS64_OpSelect1(v)
	case OpSignExt16to32:
		v.Op = OpMIPS64MOVHreg
		return true
	case OpSignExt16to64:

	for {
		x := v_0
		if x.Op != OpSelect0 {
			break
		}
		x_0 := x.Args[0]
		if x_0.Op != OpRISCV64LoweredAtomicLoad8 {
			break
		}
		v.reset(OpRISCV64MOVDreg)
		v.AddArg(x)
		return true
	}
	// match: (MOVBUreg x:(Select0 (LoweredAtomicCas32 _ _ _ _)))
	// result: (MOVDreg x)
	for {
		x := v_0
		if x.Op != OpSelect0 {
			break
		}
		x_0 := x.Args[0]

	case OpRsh8x32:
		return rewriteValueLOONG64_OpRsh8x32(v)
	case OpRsh8x64:
		return rewriteValueLOONG64_OpRsh8x64(v)
	case OpRsh8x8:
		return rewriteValueLOONG64_OpRsh8x8(v)
	case OpSelect0:
		return rewriteValueLOONG64_OpSelect0(v)
	case OpSelect1:
		return rewriteValueLOONG64_OpSelect1(v)
	case OpSignExt16to32:
		v.Op = OpLOONG64MOVHreg
		return true
	case OpSignExt16to64: