Subzero: Make the register allocator more robust with -reg-use and -reg-exclude.

src/IceCfg.h

Index: src/IceCfg.h
diff --git a/src/IceCfg.h b/src/IceCfg.h
index 47bdd04ba4ccc259e1fbc2c3bb8b021846e00fb3..8e816149b6b20773fbfa89bb64ea07950c3cbb1d 100644
--- a/src/IceCfg.h
+++ b/src/IceCfg.h
@@ -64,7 +64,8 @@ public:
   /// \name Manage the name and return type of the function being translated.
   /// @{
   void setFunctionName(const IceString &Name) { FunctionName = Name; }
-  IceString getFunctionName() const { return FunctionName; }
+  const IceString &getFunctionName() const { return FunctionName; }
+  IceString getFunctionNameAndSize() const;
   void setReturnType(Type Ty) { ReturnType = Ty; }
   Type getReturnType() const { return ReturnType; }
   /// @}