if arm64SpecialOperand == nil {
		// Generate the mapping automatically when the first time the function is called.
		arm64SpecialOperand = map[string]arm64.SpecialOperand{}
		for opd := arm64.SPOP_BEGIN; opd < arm64.SPOP_END; opd++ {
			arm64SpecialOperand[opd.String()] = opd
		}

		// Handle some special cases.
		specialMapping := map[string]arm64.SpecialOperand{
			// The internal representation of CS(CC) and HS(LO) are the same.

	MOVL DR6, DX // 0f21f2
	MOVL DR7, SI // 0f21fe
	// Test other movtab entries.
	PUSHL SS // 16
	PUSHL FS // 0fa0
	POPL FS  // 0fa1
	POPL SS  // 17

	RDPID AX                                // f30fc7f8

	// End of tests.

pkg net/http/httputil, var ErrClosed //deprecated
pkg net/http/httputil, var ErrPersistEOF //deprecated
pkg net/http/httputil, var ErrPipeline //deprecated
pkg os, const SEEK_CUR //deprecated
pkg os, const SEEK_END //deprecated
pkg os, const SEEK_SET //deprecated
pkg path/filepath, func HasPrefix //deprecated
pkg regexp, method (*Regexp) Copy //deprecated
pkg runtime, func CPUProfile //deprecated

	b := make([]byte, n+1)
	for _, len := range lengths {
		// randomish but deterministic data. No 0 or 255.
		for i := 0; i < len; i++ {
			a[i] = byte(1 + 31*i%254)
			b[i] = byte(1 + 31*i%254)
		}
		// data past the end is different
		for i := len; i <= n; i++ {
			a[i] = 8
			b[i] = 9
		}
		cmp := Compare(a[:len], b[:len])
		if cmp != 0 {
			t.Errorf(`CompareIdentical(%d) = %d`, len, cmp)
		}
		if len > 0 {

import (
	"bufio"
	"bytes"
	"fmt"
	"internal/buildcfg"
	"os"
	"path/filepath"
	"regexp"
	"sort"
	"strconv"
	"strings"
	"testing"

	"cmd/asm/internal/lex"
	"cmd/internal/obj"
)

// An end-to-end test for the assembler: Do we print what we parse?
// Output is generated by, in effect, turning on -S and comparing the
// result against a golden file.

func testEndToEnd(t *testing.T, goarch, file string) {

pkg go/doc, type Example struct, Order int
pkg go/doc, type Example struct, Play *ast.File
pkg go/doc, type Note struct
pkg go/doc, type Note struct, Body string
pkg go/doc, type Note struct, End token.Pos
pkg go/doc, type Note struct, Pos token.Pos
pkg go/doc, type Note struct, UID string
pkg go/doc, type Package struct, Notes map[string][]*Note
pkg go/doc, var IllegalPrefixes []string

//
// This script supports an extra flag, -lldb, that pauses execution
// just before the main program begins and allows the user to control
// the remote lldb session. This flag is appended to the end of the
// script's arguments and is not passed through to the underlying
// binary.
//
// This script requires that three environment variables be set:
//

	// Diagnose common mistakes people make,
	// since there is no apifmt to format these files.
	// The missing final newline is important for the
	// final release step of cat next/*.txt >go1.X.txt.
	// If the files don't end in full lines, the concatenation goes awry.
	if strings.Contains(s, "\r") {
		log.Printf("%s: contains CRLFs", filename)
		exitCode = 1
	}
	if filepath.Base(filename) == "go1.4.txt" {

allowing a racing thread to read 1 as well.
</p>

<p>
Note that all these optimizations are permitted in C/C++ compilers:
a Go compiler sharing a back end with a C/C++ compiler must take care
to disable optimizations that are invalid for Go.
</p>

<p>
Note that the prohibition on introducing data races
does not apply if the compiler can prove that the races

	var curfname string
	for _, entry := range entries {
		curfname = entry.Name()
		if entry.IsDir() {
			curfname += "/"
			continue
		}
		hdr, err := tr.Next()
		if err == io.EOF {
			break // End of archive
		}
		if err != nil {
			t.Fatal(err)
		}

		data, err := io.ReadAll(tr)
		if err != nil {
			t.Fatal(err)
		}

		if hdr.Name != curfname {