TEXT ·a21(SB), 0, $0-0
	CMPL runtime·writeBarrier(SB), $0
	MOVBLSX AX, R15
	ADDQ $1, R15
	RET
TEXT ·a22(SB), 0, $0-0
	CMPL runtime·writeBarrier(SB), $0
	PMOVMSKB X0, R15
	ADDQ $1, R15
	RET
TEXT ·a23(SB), 0, $0-0
	CMPL runtime·writeBarrier(SB), $0
	LEAQ (AX)(CX*1), R15
	RET
TEXT ·a24(SB), 0, $0-0
	CMPL runtime·writeBarrier(SB), $0

  private static final ImmutableSet<String> VALID_NAME =
      ImmutableSet.of(
          // keep-sorted start
          "123.cn",
          "8server.shop",
          "a" + DELTA + "b.com",
          "abc.a23",
          "biz.com.ua",
          "f--1.com",
          "f--o",
          "f-_-o.cOM",
          "f11-1.com",
          "fOo",
          "f_a",
          "foo.com",
          "foo.net.us\uFF61ocm",