w := v.Args[0]

	// This loop is just:
	// for w.Op == OpCopy {
	//     w = w.Args[0]
	// }
	// but we take some extra care to make sure we
	// don't get stuck in an infinite loop.
	// Infinite copy loops may happen in unreachable code.
	// (TODO: or can they? Needs a test.)
	slow := w
	var advance bool
	for w.Op == OpCopy {
		w = w.Args[0]
		if w == slow {
			w.reset(OpUnknown)
			break
		}
		if advance {

		fmt.Fprintln(w)
		buf := new(strings.Builder)
		PrintUsage(buf, base.Go)
		usage := &base.Command{Long: buf.String()}
		cmds := []*base.Command{usage}
		for _, cmd := range base.Go.Commands {
			cmds = append(cmds, cmd)
			cmds = append(cmds, cmd.Commands...)
		}
		tmpl(&commentWriter{W: w}, documentationTemplate, cmds)
		fmt.Fprintln(w, "package main")
		return
	}

	cmd := base.Go
Args:
	for i, arg := range args {

	// i.e., all hashes.  This will print all the FMAs; this test is only interested in one of them (that should appear near the end).
	cmd.Env = append(cmd.Env, "GOCOMPILEDEBUG=fmahash=1/0", "GOOS=linux", "GOARCH=arm64", "HOME="+tmpdir)
	t.Logf("%v", cmd)
	t.Logf("%v", cmd.Env)
	b, e := cmd.CombinedOutput()
	if e != nil {
		t.Errorf("build failed: %v\n%s", e, b)
	}

			// <local>.
			//
			// Expand to
			//
			//   cgo_export_* <local> <remote> <ABI>
			if len(*pprag) == 2 {
				*pprag = append(*pprag, (*pprag)[1])
			}
			// Add the ABI argument.
			*pprag = append(*pprag, fn.ABI.String())
		}

		// Apply references.
		if abis, ok := s.refs[symName]; ok {
			fn.ABIRefs |= abis
		}

		// 'go' version directives.
		includeGoVersions = true
	}

	var vendorMods []module.Version
	for m := range isExplicit {
		vendorMods = append(vendorMods, m)
	}
	for m := range modpkgs {
		if !isExplicit[m] {
			vendorMods = append(vendorMods, m)
		}
	}
	gover.ModSort(vendorMods)

	var (
		buf bytes.Buffer
		w   io.Writer = &buf
	)
	if cfg.BuildV {

	// Plus, it is useful to uniquely identify packages in 'go list -json'.
	if a != nil && a.Package != nil {
		cmd.Env = append(cmd.Env, "TOOLEXEC_IMPORTPATH="+a.Package.Desc())
	}

	cmd.Env = append(cmd.Env, env...)
	start := time.Now()
	err = cmd.Run()
	if a != nil && a.json != nil {
		aj := a.json
		aj.Cmd = append(aj.Cmd, joinUnambiguously(cmdline))
		aj.CmdReal += time.Since(start)
		if ps := cmd.ProcessState; ps != nil {

			// terms are not canonically sorted, so we sort their hashes instead.
			var buf bytes.Buffer
			if term.tilde {
				buf.WriteByte('~')
			}
			newTypeHasher(&buf, w.ctxt).typ(term.typ)
			termHashes = append(termHashes, buf.String())
		}
		sort.Strings(termHashes)
		if !first {
			w.byte(';')
		}
		w.string(strings.Join(termHashes, "|"))
	}
}

func (w *typeWriter) typeList(list []Type) {

	}

	var results []jsonResult
	for _, p := range platform.List {
		broken := platform.Broken(p.GOOS, p.GOARCH)
		if broken && !*brokenFlag {
			continue
		}
		if *jsonFlag {
			results = append(results, jsonResult{
				GOOS:         p.GOOS,
				GOARCH:       p.GOARCH,
				CgoSupported: platform.CgoSupported(p.GOOS, p.GOARCH),
				FirstClass:   platform.FirstClass(p.GOOS, p.GOARCH),
				Broken:       broken,

			if a.Package != nil {
				// TODO(rsc): Make this a unique key for a.Package somehow.
				a.json.Package = a.Package.ImportPath
			}
			for _, a1 := range a.Deps {
				a.json.Deps = append(a.json.Deps, inWorkq[a1])
			}
		}
		list = append(list, a.json)
	}

	js, err := json.MarshalIndent(list, "", "\t")
	if err != nil {
		fmt.Fprintf(os.Stderr, "go: writing debug action graph: %v\n", err)
		return ""
	}

				if !queued[dep] {
					queue = append(queue, dep)
					queued[dep] = true
				}
			}
			if pkg.test != nil && !queued[pkg.test] {
				queue = append(queue, pkg.test)
				queued[pkg.test] = true
			}

			if !pathIsRoot[m.Path] {
				if s := mg.Selected(m.Path); gover.ModCompare(m.Path, s, m.Version) < 0 {
					roots = append(roots, m)
					pathIsRoot[m.Path] = true
				}
			}