[PATCH] Driver: begin threading frontend support for SymbolRewriter

[Eric Christopher]

Couple of questions inline...


================
Comment at: include/clang/Driver/Options.td:580
@@ -579,1 +579,3 @@
 
+def frewrite_map_file : Separate<["-"], "frewrite-map-file">,
+                        Group<f_Group>,
----------------
Joined and -frewrite-map-file= ?

================
Comment at: lib/CodeGen/BackendUtil.cpp:361
@@ -348,2 +360,3 @@
   PassManager *MPM = getPerModulePasses();
+  addSymbolRewriterPass(CodeGenOpts, MPM);
   if (CodeGenOpts.VerifyModule)
----------------
Conditionalize this based on whether or not the flag has been passed or the vector is empty?

http://reviews.llvm.org/D6813

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