// previous termination check, so there may be more
		// work to do. Keep going. It's possible the
		// transition condition became true again during the
		// ragged barrier, so re-check it.
		semrelease(&worldsema)
		goto top
	}

	// There was no global work, no local work, and no Ps
	// communicated work since we took markDoneSema. Therefore
	// there are no grey objects and no more objects can be

	}

	// Is the target up-to-date?
	var gofiles, sfiles []string
	stale := rebuildall
	files = filter(files, func(p string) bool {
		for _, suf := range depsuffix {
			if strings.HasSuffix(p, suf) {
				goto ok
			}
		}
		return false
	ok:
		t := mtime(p)
		if !t.IsZero() && !strings.HasSuffix(p, ".a") && !shouldbuild(p, pkg) {
			return false
		}
		if strings.HasSuffix(p, ".go") {

// system stack).
func doRecordGoroutineProfile(gp1 *g, pcbuf []uintptr) {
	if readgstatus(gp1) == _Grunning {
		print("doRecordGoroutineProfile gp1=", gp1.goid, "\n")
		throw("cannot read stack of running goroutine")
	}

	offset := int(goroutineProfile.offset.Add(1)) - 1

	if offset >= len(goroutineProfile.records) {

			}
		}
		if keyword == _For {
			if p.tok != _Semi {
				if p.tok == _Lbrace {
					p.syntaxError("expected for loop condition")
					goto done
				}
				condStmt = p.simpleStmt(nil, 0 /* range not permitted */)
			}
			p.want(_Semi)
			if p.tok != _Lbrace {
				post = p.simpleStmt(nil, 0 /* range not permitted */)

func mergePoint(b *Block, a ...*Value) *Block {
	// Walk backward from b looking for one of the a's blocks.

	// Max distance
	d := 100

	for d > 0 {
		for _, x := range a {
			if b == x.Block {
				goto found
			}
		}
		if len(b.Preds) > 1 {
			// Don't know which way to go back. Abort.
			return nil
		}
		b = b.Preds[0].b
		d--
	}
	return nil // too far away
found:

func scanDir(modroot string, dir string, tags map[string]bool) (imports_, testImports []string, err error) {
	if ip, mierr := modindex.GetPackage(modroot, dir); mierr == nil {
		imports_, testImports, err = ip.ScanDir(tags)
		goto Happy
	} else if !errors.Is(mierr, modindex.ErrNotIndexed) {
		return nil, nil, mierr
	}

	imports_, testImports, err = imports.ScanDir(dir, tags)
Happy:

	filter := func(x []string) []string {

			*c = h.pages.allocToCache()
			unlock(&h.lock)
		}

		// Try to allocate from the cache.
		base, scav = c.alloc(npages)
		if base != 0 {
			s = h.tryAllocMSpan()
			if s != nil {
				goto HaveSpan
			}
			// We have a base but no mspan, so we need
			// to lock the heap.
		}
	}

	// For one reason or another, we couldn't get the
	// whole job done without the heap lock.