Revert r153694. It was causing failures in the buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153701 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ExecutionEngine/RuntimeDyld.h

@@ -45,6 +45,17 @@ public:
   virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
                                        unsigned SectionID) = 0;
 
+  // Allocate ActualSize bytes, or more, for the named function. Return
+  // a pointer to the allocated memory and update Size to reflect how much
+  // memory was acutally allocated.
+  virtual uint8_t *startFunctionBody(const char *Name, uintptr_t &Size) = 0;
+
+  // Mark the end of the function, including how much of the allocated
+  // memory was actually used.
+  virtual void endFunctionBody(const char *Name, uint8_t *FunctionStart,
+                               uint8_t *FunctionEnd) = 0;
+
+  
   virtual void *getPointerToNamedFunction(const std::string &Name,
                                           bool AbortOnFailure = true) = 0;
 };