[PATCH] Add a new pass to compute DWARF path discriminators.

[Diego Novillo]

================
Comment at: lib/MC/MCObjectStreamer.cpp:268
@@ -266,1 +267,3 @@
+    errs() << "MCObjectStreamer::EmitDwarfLocDirective: " << Line << ":"
+           << Column << ":" << Discriminator << "\n";
   // In case we see two .loc directives in a row, make sure the
----------------
Clearly, I will remove this at some point.


http://llvm-reviews.chandlerc.com/D2691