((NE|EQ) (TESTLconst [c] x)) && isUint32PowerOfTwo(int64(c))
    => ((ULT|UGE) (BTLconst [int8(log32(c))] x))
((NE|EQ) (TESTQconst [c] x)) && isUint64PowerOfTwo(int64(c))
    => ((ULT|UGE) (BTQconst [int8(log32(c))] x))
((NE|EQ) (TESTQ (MOVQconst [c]) x)) && isUint64PowerOfTwo(c)
    => ((ULT|UGE) (BTQconst [int8(log64(c))] x))
(SET(NE|EQ) (TESTL (SHLL (MOVLconst [1]) x) y)) => (SET(B|AE)  (BTL x y))

		break
	}
	// match: (ANDQ (MOVQconst [c]) x)
	// cond: isUint64PowerOfTwo(^c) && uint64(^c) >= 1<<31
	// result: (BTRQconst [int8(log64(^c))] x)
	for {
		for _i0 := 0; _i0 <= 1; _i0, v_0, v_1 = _i0+1, v_1, v_0 {
			if v_0.Op != OpAMD64MOVQconst {
				continue
			}
			c := auxIntToInt64(v_0.AuxInt)
			x := v_1
			if !(isUint64PowerOfTwo(^c) && uint64(^c) >= 1<<31) {
				continue
			}

}
func isPowerOfTwo32(n int32) bool {
	return n > 0 && n&(n-1) == 0
}
func isPowerOfTwo64(n int64) bool {
	return n > 0 && n&(n-1) == 0
}

// isUint64PowerOfTwo reports whether uint64(n) is a power of 2.
func isUint64PowerOfTwo(in int64) bool {
	n := uint64(in)
	return n > 0 && n&(n-1) == 0
}

// isUint32PowerOfTwo reports whether uint32(n) is a power of 2.
func isUint32PowerOfTwo(in int64) bool {