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, 4 insertions, 3 deletions

diff --git a/llvm/tools/llvm-mc/llvm-mc.cpp b/llvm/tools/llvm-mc/llvm-mc.cpp
index ce4a5b355a6..280a1bbd996 100644
--- a/llvm/tools/llvm-mc/llvm-mc.cpp
+++ b/llvm/tools/llvm-mc/llvm-mc.cpp
@@ -409,8 +409,10 @@ static int AssembleInput(const char *ProgName) {
     }
     Str.reset(TheTarget->createAsmStreamer(Ctx, FOS, /*asmverbose*/true,
                                            /*useLoc*/ true,
-                                           /*useCFI*/ true, IP, CE, MAB,
-                                           ShowInst));
+                                           /*useCFI*/ true,
+                                           /*useDwarfDirectory*/ true,
+                                           IP, CE, MAB, ShowInst));
+                                           
   } else if (FileType == OFT_Null) {
     Str.reset(createNullStreamer(Ctx));
   } else {
@@ -515,4 +517,3 @@ int main(int argc, char **argv) {
 
   return 0;
 }
-