go/src/cmd/compile/internal/reflectdata/map_noswiss.go

// OldMapBucketType makes the map bucket type given the type of the map.
func OldMapBucketType(t *types.Type) *types.Type { … }

var oldHmapType …

// OldMapType returns a type interchangeable with runtime.hmap.
// Make sure this stays in sync with runtime/map.go.
func OldMapType() *types.Type { … }

var oldHiterType …

// OldMapIterType returns a type interchangeable with runtime.hiter.
// Make sure this stays in sync with runtime/map.go.
func OldMapIterType() *types.Type { … }

func writeOldMapType(t *types.Type, lsym *obj.LSym, c rttype.Cursor) { … }