Reapply my previous asmprinter changes now with more testing and two 
additional bug fixes:

1. The bug that everyone hit was a problem in the asmprinter where it
   would remove $stub but keep the L prefix on a name when emitting the
   indirect symbol.  This is easy to fix by keeping the name of the stub
   and the name of the symbol in a StringMap instead of just keeping a
   StringSet and trying to reconstruct it late.

2. There was a problem printing the personality function.  The current
   logic to print out the personality function from the DWARF information
   is a bit of a cesspool right now that duplicates a bunch of other 
   logic in the asm printer.  The short version of it is that it depends
   on emitting both the L and _ prefix for symbols (at least on darwin)
   and until I can untangle it, it is best to switch the mangler back to
   emitting both prefixes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75646 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachOCodeEmitter.cpp b/lib/CodeGen/MachOCodeEmitter.cpp
index 14ebc3f..7709276 100644
--- a/lib/CodeGen/MachOCodeEmitter.cpp
+++ b/lib/CodeGen/MachOCodeEmitter.cpp
@@ -60,7 +60,7 @@
 
   // Create symbol for function entry
   const GlobalValue *FuncV = MF.getFunction();
-  MachOSym FnSym(FuncV, MOW.Mang->getValueName(FuncV), MOS->Index, TAI);
+  MachOSym FnSym(FuncV, MOW.Mang->getMangledName(FuncV), MOS->Index, TAI);
   FnSym.n_value = getCurrentPCOffset();
 
   // add it to the symtab.