//	LSUBW rreg ',' sreg ',' rreg
//	{
//		outcode(int($1), &$2, int($4), &$6);
//	}
	SUB	R6, R26, R27	// 0346d822
	SUBU	R6, R26, R27	// 0346d823
	SUBV	R16, R17, R26	// 0230d02e
	SUBVU	R16, R17, R26	// 0230d02f

//	LSUBW imm ',' sreg ',' rreg
//	{
//		outcode(int($1), &$2, int($4), &$6);
//	}
	SUB	$-3126, R17, R22	// 22360c36
	SUB	$3126, R17, R22		// 2236f3ca
	SUBU	$16384, R17, R12	// 262cc000

	ADDW	R1, R2, R3            // b9f81032
	ADDW	$8192, R1             // a71a2000
	ADDW	$8192, R1, R2         // ec21200000d8
	ADDE	R1, R2                // b9880021
	SUB	R3, R4                // b9090043
	SUB	R3, R4, R5            // b9e93054
	SUB	$8192, R3             // a73be000
	SUB	$8192, R3, R4         // ec43e00000d9
	SUBC	R1, R2                // b90b0021
	SUBC	$1, R1, R2            // ec21ffff00db
	SUBC	R2, R3, R4            // b9eb2043

	SUB	R0->28, R1           // 401e41e0
	SUB	R0@>28, R1           // 601e41e0
	SUB.S	R0<<28, R1           // 001e51e0
	SUB.S	R0>>28, R1           // 201e51e0
	SUB.S	R0->28, R1           // 401e51e0
	SUB.S	R0@>28, R1           // 601e51e0
	SUB	R0<<R1, R2, R3       // 103142e0
	SUB	R0>>R1, R2, R3       // 303142e0
	SUB	R0->R1, R2, R3       // 503142e0
	SUB	R0@>R1, R2, R3       // 703142e0

		tests []operandTest
	}
	for _, sub := range []subtest{
		{"amd64", amd64OperandTests},
		{"386", x86OperandTests},
		{"arm", armOperandTests},
		{"arm64", arm64OperandTests},
		{"ppc64", ppc64OperandTests},
		{"mips", mipsOperandTests},
		{"mips64", mips64OperandTests},
		{"loong64", loong64OperandTests},
		{"s390x", s390xOperandTests},
	} {
		t.Run(sub.arch, func(t *testing.T) {

			}
		}
		t.Go = name
		t.BadPointer = sub.BadPointer
		if unionWithPointer[sub.Go] {
			unionWithPointer[t.Go] = true
		}
		t.Size = sub.Size
		t.Align = sub.Align
		oldType := typedef[name.Name]
		if oldType == nil {
			tt := *t
			tt.Go = sub.Go
			tt.BadPointer = sub.BadPointer
			typedef[name.Name] = &tt
		}

	<br>
	If <code>a<sub>i</sub></code> is an untyped constant <code>c<sub>j</sub></code>,
	and <code>typeof(p<sub>i</sub>)</code> is a bound type parameter <code>P<sub>k</sub></code>,
	the pair <code>(c<sub>j</sub>, P<sub>k</sub>)</code> is collected separately from
	the type equations.
	</p>
</li>
<li>
	<p>

//	ChangeTime        |    n/a | unlimited |     int89
//	Devmajor/Devminor | uint21 |    uint21 |    uint57
//	------------------+--------+-----------+----------
//	string encoding   |  ASCII |     UTF-8 |    binary
//	sub-second times  |     no |       yes |        no
//	sparse files      |     no |       yes |       yes
//
// The table's upper portion shows the [Header] fields, where each format reports

	SUB	$0x000aaa, R2, R3               // SUB $2730, R2, R3                      // 43a82ad1
	SUB	$0x000aaa, R2                   // SUB $2730, R2                          // 42a82ad1
	SUB	$0xaaa000, R2, R3               // SUB $11182080, R2, R3                  // 43a86ad1
	SUB	$0xaaa000, R2                   // SUB $11182080, R2                      // 42a86ad1

	const maxNanoSecondDigits = 9

	// Split string into seconds and sub-seconds parts.
	ss, sn, _ := strings.Cut(s, ".")

	// Parse the seconds.
	secs, err := strconv.ParseInt(ss, 10, 64)
	if err != nil {
		return time.Time{}, ErrHeader
	}
	if len(sn) == 0 {
		return time.Unix(secs, 0), nil // No sub-second values
	}

	// Parse the nanoseconds.
	if strings.Trim(sn, "0123456789") != "" {

parseExtras:
	for extra := readBuf(f.Extra); len(extra) >= 4; { // need at least tag and size
		fieldTag := extra.uint16()
		fieldSize := int(extra.uint16())
		if len(extra) < fieldSize {
			break
		}
		fieldBuf := extra.sub(fieldSize)

		switch fieldTag {
		case zip64ExtraID:
			f.zip64 = true

			// update directory values from the zip64 extra block.
			// They should only be consulted if the sizes read earlier