"MULHDU",
	"MULHDUCC",
	"MULLD",
	"MULLDCC",
	"MULLDVCC",
	"MULLDV",
	"RFID",
	"RLDMI",
	"RLDMICC",
	"RLDIMI",
	"RLDIMICC",
	"RLDC",
	"RLDCCC",
	"RLDCR",
	"RLDCRCC",
	"RLDICR",
	"RLDICRCC",
	"RLDCL",
	"RLDCLCC",
	"RLDICL",
	"RLDICLCC",
	"RLDIC",
	"RLDICCC",
	"CLRLSLDI",
	"ROTL",
	"ROTLW",
	"SLBIA",
	"SLBIE",
	"SLBMFEE",
	"SLBMFEV",
	"SLBMTE",

// Convert simple bit masks to an equivalent rldic[lr] if possible.
(AND x:(MOVDconst [m]) n) && isPPC64ValidShiftMask(m) => (RLDICL [encodePPC64RotateMask(0,m,64)] n)
(AND x:(MOVDconst [m]) n) && m != 0 && isPPC64ValidShiftMask(^m) => (RLDICR [encodePPC64RotateMask(0,m,64)] n)

// If the RLDICL does not rotate its value, a shifted value can be merged.
(RLDICL [em] x:(SRDconst [s] a)) && (em&0xFF0000) == 0 => (RLDICL [mergePPC64RLDICLandSRDconst(em, s)] a)

	BLT	cmp16		// Jump to the small string case if it's <32 bytes.

	CMP	R4,$64,CR1
	MOVD	$16,R11
	MOVD	R3,R8
	BLT	CR1,cmp32	// Special case for length 32 - 63
	MOVD	$32,R12
	MOVD	$48,R6

	RLDICR  $0,R4,$63-6,R9	// R9 = len &^ 63
	ADD	R3,R9,R9	// R9 = &s[len &^ 63]
	ANDCC	$63,R4		// (len &= 63) cmp 0.

	PCALIGN	$16
loop64:
	LXVD2X	(R0)(R8),V2	// Scan 64 bytes at a time, starting at &s[0]
	VCMPEQUBCC	V2,V1,V6

	return
}

// Verify rotate and mask instructions, and further simplified instructions for small types
func bitRotateAndMask(io64 [8]uint64, io32 [4]uint32, io16 [4]uint16, io8 [4]uint8) {
	// ppc64x: "RLDICR\t[$]0, R[0-9]*, [$]47, R"
	io64[0] = io64[0] & 0xFFFFFFFFFFFF0000
	// ppc64x: "RLDICL\t[$]0, R[0-9]*, [$]16, R"
	io64[1] = io64[1] & 0x0000FFFFFFFFFFFF
	// ppc64x: -"SRD", -"AND", "RLDICL\t[$]60, R[0-9]*, [$]16, R"