return Header.getFile(Directory, FileName, FileNumber);
}
-unsigned MCDwarfLineTableHeader::getFile(StringRef Directory, StringRef FileName, unsigned FileNumber) {
+unsigned MCDwarfLineTableHeader::getFile(StringRef Directory,
+ StringRef FileName,
+ unsigned FileNumber) {
+ if (FileNumber == 0) {
+ FileNumber = SourceIdMap.size() + 1;
+ assert((MCDwarfFiles.empty() || FileNumber == MCDwarfFiles.size()) &&
+ "Don't mix autonumbered and explicit numbered line table usage");
+ StringMapEntry<unsigned> &Ent = SourceIdMap.GetOrCreateValue(
+ (Directory + Twine('\0') + FileName).str(), FileNumber);
+ if (Ent.getValue() != FileNumber)
+ return Ent.getValue();
+ }
// Make space for this FileNumber in the MCDwarfFiles vector if needed.
MCDwarfFiles.resize(FileNumber + 1);