[DWARF parser] Use enums instead of bitfields in DILineInfoSpecifier.

It is more appropriate than the current situation, when one flag
(AbsoluteFilePath) is relevant only if another flag is set.

This refactoring would also simplify fetching the short function name
(stored in DW_AT_name) instead of a linkage name returned currently.

No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208921 91177308-0d34-0410-b5e6-96231b3b80d8

lib/DebugInfo/DWARFDebugLine.h

@@ -11,6 +11,7 @@
 #define LLVM_DEBUGINFO_DWARFDEBUGLINE_H
 
 #include "DWARFRelocMap.h"
+#include "llvm/DebugInfo/DIContext.h"
 #include "llvm/Support/DataExtractor.h"
 #include <map>
 #include <string>
@@ -179,7 +180,7 @@ public:
     // Extracts filename by its index in filename table in prologue.
     // Returns true on success.
     bool getFileNameByIndex(uint64_t FileIndex,
-                            bool NeedsAbsoluteFilePath,
+                            DILineInfoSpecifier::FileLineInfoKind Kind,
                             std::string &Result) const;
 
     void dump(raw_ostream &OS) const;