Add support for a new extension to the .file directive:

  .file filenumber "directory" "filename"

This removes one join+split of the directory+filename in MC internals. Because
bitcode files have independent fields for directory and filenames in debug info,
this patch may change the .o files written by existing .bc files.

llvm-svn: 142300

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/MC/MCStreamer.cpp b/llvm/lib/MC/MCStreamer.cpp
index 3afa22b0d0b..2a37f82a518 100644
--- a/llvm/lib/MC/MCStreamer.cpp
+++ b/llvm/lib/MC/MCStreamer.cpp
@@ -142,8 +142,9 @@ void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue,
 }
 
 bool MCStreamer::EmitDwarfFileDirective(unsigned FileNo,
+                                        StringRef Directory,
                                         StringRef Filename) {
-  return getContext().GetDwarfFile(Filename, FileNo) == 0;
+  return getContext().GetDwarfFile(Directory, Filename, FileNo) == 0;
 }
 
 void MCStreamer::EmitDwarfLocDirective(unsigned FileNo, unsigned Line,