BFX	$12, $41, R2, R3   // ERROR "wrong width or LSB"
	BFX	$12, $-2, R2       // ERROR "wrong width or LSB"
	BFXU	$40, $4, R2, R3    // ERROR "wrong width or LSB"
	BFXU	$-40, $4, R2       // ERROR "wrong width or LSB"
	BFX	$-2, $4, R2, R3    // ERROR "wrong width or LSB"
	BFXU	$4, R2, R5, R2     // ERROR "missing or wrong LSB"
	BFXU	$4, R2, R5         // ERROR "missing or wrong LSB"
	BFC	$12, $8, R2, R3    // ERROR "illegal combination"

		return true
	}
	return false
}

// IsARMBFX reports whether the op (as defined by an arm.A* constant) is one the
// BFX-like instructions which are in the form of "op $width, $LSB, (Reg,) Reg".
func IsARMBFX(op obj.As) bool {
	switch op {
	case arm.ABFX, arm.ABFXU, arm.ABFC, arm.ABFI:
		return true
	}
	return false
}

pkg compress/gzip, type Writer struct
pkg compress/gzip, type Writer struct, embedded Header
pkg compress/gzip, var ErrChecksum error
pkg compress/gzip, var ErrHeader error
pkg compress/lzw, const LSB Order
pkg compress/lzw, const MSB Order
pkg compress/lzw, func NewReader(io.Reader, Order, int) io.ReadCloser
pkg compress/lzw, func NewWriter(io.Writer, Order, int) io.WriteCloser
pkg compress/lzw, type Order int

pkg compress/gzip, const BestSpeed = 1
pkg compress/gzip, const DefaultCompression = -1
pkg compress/gzip, const NoCompression = 0
pkg compress/gzip, method (*Writer) Flush() error
pkg compress/lzw, const LSB = 0
pkg compress/lzw, const MSB = 1
pkg compress/zlib, const BestCompression = 9
pkg compress/zlib, const BestSpeed = 1
pkg compress/zlib, const DefaultCompression = -1
pkg compress/zlib, const NoCompression = 0