Mapping:  mi.m,
		Address:  uint64(int64(src.Address) + mi.offset),
		Line:     make([]Line, len(src.Line)),
		IsFolded: src.IsFolded,
	}
	for i, ln := range src.Line {
		l.Line[i] = pm.mapLine(ln)
	}
	// Check memoization table. Must be done on the remapped location to
	// account for the remapped mapping ID.
	k := l.key()
	if ll, ok := pm.locations[k]; ok {
		pm.locationsByID[src.ID] = ll

		Mapping:  mi.m,
		Address:  uint64(int64(src.Address) + mi.offset),
		Line:     make([]Line, len(src.Line)),
		IsFolded: src.IsFolded,
	}
	for i, ln := range src.Line {
		l.Line[i] = pm.mapLine(ln)
	}
	// Check memoization table. Must be done on the remapped location to
	// account for the remapped mapping ID.
	k := l.key()
	if ll, ok := pm.locations[k]; ok {
		pm.locationsByID.set(src.ID, ll)