v.reset(OpAMD64BTL)
		v.AddArg2(y, x)
		return true
	}
	return false
}
func rewriteValueAMD64_OpAMD64BTQconst(v *Value) bool {
	v_0 := v.Args[0]
	// match: (BTQconst [c] (SHRQconst [d] x))
	// cond: (c+d)<64
	// result: (BTQconst [c+d] x)
	for {
		c := auxIntToInt8(v.AuxInt)
		if v_0.Op != OpAMD64SHRQconst {
			break
		}
		d := auxIntToInt8(v_0.AuxInt)
		x := v_0.Args[0]