CMPW R3, $0, CR2                // CMPW R3,CR2,$0       // 2d030000
	CMPW R3, $-32768, CR2           // CMPW R3,CR2,$-32768  // 2d038000
	CMPWU R3, $0, CR3               // CMPWU R3,CR3,$0      // 29830000
	CMPWU R3, $0x8008, CR3          // CMPWU R3,CR3,$32776  // 29838008

	CMPEQB R3,R4,CR6                // 7f0321c0
	CMPB R3,R4,R4                   // 7c6423f8

	ADD R3, R4                      // 7c841a14

		{"☻x\xe2\x98�", '�', len("☻x")},
		{"☻x\xe2\x98x", '�', len("☻x")},

		// Invalid rune values should never match.
		{"a☺b☻c☹d\xe2\x98�\xff�\xed\xa0\x80", -1, -1},
		{"a☺b☻c☹d\xe2\x98�\xff�\xed\xa0\x80", 0xD800, -1}, // Surrogate pair
		{"a☺b☻c☹d\xe2\x98�\xff�\xed\xa0\x80", utf8.MaxRune + 1, -1},

		// Test the cutover to bytealg.Index when it is triggered in
		// the middle of rune that contains consecutive runs of equal bytes.