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/MCPureStreamer.cpp b/llvm/lib/MC/MCPureStreamer.cpp
index 086c9229bcd..1a2a92e3293 100644
--- a/llvm/lib/MC/MCPureStreamer.cpp
+++ b/llvm/lib/MC/MCPureStreamer.cpp
@@ -93,7 +93,8 @@ public:
   virtual void EmitFileDirective(StringRef Filename) {
     report_fatal_error("unsupported directive in pure streamer");
   }
-  virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Filename) {
+  virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
+                                      StringRef Filename) {
     report_fatal_error("unsupported directive in pure streamer");
     return false;
   }