MOVFL CR3, CR1                  // 4c8c0000

	MOVW CR0, R1                    // 7c380026
	MOVW CR7, R1                    // 7c301026
	MOVW CR, R1                     // 7c200026

	MOVW R1, CR                     // 7c2ff120
	MOVFL R1, CR                    // 7c2ff120
	MOVW R1, CR2                    // 7c320120
	MOVFL R1, CR2                   // 7c320120
	MOVFL R1, $255                  // 7c2ff120

		}
		if bytealg.IndexByteString(chars, s[0]) >= 0 {
			return 0
		}
		return -1
	}
	if len(chars) == 1 {
		cr := rune(chars[0])
		if cr >= utf8.RuneSelf {
			cr = utf8.RuneError
		}
		for i := len(s); i > 0; {
			r, size := utf8.DecodeLastRune(s[:i])
			i -= size
			if r == cr {
				return i
			}
		}
		return -1
	}
	for i := len(s); i > 0; {
		r := rune(s[i-1])

			// effectively discarded. In these cases, the offset determines
			// the CR bit.
			prog.Reg = a[1].Reg
			if a[1].Type != obj.TYPE_REG {
				// The CR bit is represented as a constant 0-31. Convert it to a Reg.
				c := p.getConstant(prog, op, &a[1])
				reg, success := ppc64.ConstantToCRbit(c)
				if !success {
					p.errorf("invalid CR bit register number %d", c)
				}
				prog.Reg = reg
			}
			break
		}