// two floating-points will be equal exactly.  Hence a naive
// comparison by the == operation often doesn't work.)
//
// Format of IEEE floating-point:
//
//   The most-significant bit being the leftmost, an IEEE
//   floating-point looks like
//
//     sign_bit exponent_bits fraction_bits
//
//   Here, sign_bit is a single bit that designates the sign of the
//   number.
//

    }
    return "";
  }

  /**
   * Identify and mark the longest run of zeroes in an IPv6 address.
   *
   * <p>Only runs of two or more hextets are considered. In case of a tie, the leftmost run wins. If
   * a qualifying run is found, its hextets are replaced by the sentinel value -1.
   *
   * @param hextets {@code int[]} mutable array of eight 16-bit hextets
   */

// two floating-points will be equal exactly.  Hence a naive
// comparison by the == operation often doesn't work.)
//
// Format of IEEE floating-point:
//
//   The most-significant bit being the leftmost, an IEEE
//   floating-point looks like
//
//     sign_bit exponent_bits fraction_bits
//
//   Here, sign_bit is a single bit that designates the sign of the
//   number.
//

    }
    return "";
  }

  /**
   * Identify and mark the longest run of zeroes in an IPv6 address.
   *
   * <p>Only runs of two or more hextets are considered. In case of a tie, the leftmost run wins. If
   * a qualifying run is found, its hextets are replaced by the sentinel value -1.
   *
   * @param hextets {@code int[]} mutable array of eight 16-bit hextets
   */

	{i: 41, as: ABRCTG, a1: C_REG, a6: C_SBRA},

	// move on condition
	{i: 17, as: AMOVDEQ, a1: C_REG, a6: C_REG},

	// load on condition
	{i: 25, as: ALOCGR, a1: C_SCON, a2: C_REG, a6: C_REG},

	// find leftmost one
	{i: 8, as: AFLOGR, a1: C_REG, a6: C_REG},

	// population count
	{i: 9, as: APOPCNT, a1: C_REG, a6: C_REG},

	// compare
	{i: 70, as: ACMP, a1: C_REG, a6: C_REG},

		{name: "LoweredAtomicExchange64", argLength: 3, reg: exchange, asm: "CSG", aux: "SymOff", clobberFlags: true, faultOnNilArg0: true, hasSideEffects: true, symEffect: "RdWr"},

		// find leftmost one
		{
			name:         "FLOGR",
			argLength:    1,
			reg:          regInfo{inputs: gponly, outputs: []regMask{buildReg("R0")}, clobbers: buildReg("R1")},
			asm:          "FLOGR",
			typ:          "UInt64",

(MULLD x (MOVDconst [c])) && is32Bit(c) => (MULLDconst [int32(c)] x)
(MULLW x (MOVDconst [c])) => (MULLWconst [int32(c)] x)

// NILF instructions leave the high 32 bits unchanged which is
// equivalent to the leftmost 32 bits being set.
// TODO(mundaym): modify the assembler to accept 64-bit values
// and use isU32Bit(^c).
(AND x (MOVDconst [c]))
  && s390x.NewRotateParams(0, 63, 0).OutMerge(uint64(c)) != nil

  /**
   * If a hostname is not a key in the EXCLUDE map, and if removing its leftmost component results
   * in a name which is a key in this map, it is a public suffix.
   */
  public static final ImmutableMap<String, PublicSuffixType> UNDER =
      TrieParser.parseTrie(

  /**
   * If a hostname is not a key in the EXCLUDE map, and if removing its leftmost component results
   * in a name which is a key in this map, it is a public suffix.
   */
  public static final ImmutableMap<String, PublicSuffixType> UNDER =
      TrieParser.parseTrie(

	case RecvDir:
		s = "<-chan " + stringFor(typ)
	case BothDir:
		typeStr := stringFor(typ)
		if typeStr[0] == '<' {
			// typ is recv chan, need parentheses as "<-" associates with leftmost
			// chan possible, see:
			// * https://golang.org/ref/spec#Channel_types
			// * https://github.com/golang/go/issues/39897
			s = "chan (" + typeStr + ")"
		} else {
			s = "chan " + typeStr
		}