diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index 4ac5069..a328837 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1622,6 +1622,7 @@
   if (Stream.EnterSubBlock(bitc::FUNCTION_BLOCK_ID))
     return Error("Malformed block record");
 
+  InstructionList.clear();
   unsigned ModuleValueListSize = ValueList.size();
 
   // Add all the function arguments to the value table.
diff --git a/lib/Bitcode/Writer/ValueEnumerator.cpp b/lib/Bitcode/Writer/ValueEnumerator.cpp
index b56c862..aa4c3af 100644
--- a/lib/Bitcode/Writer/ValueEnumerator.cpp
+++ b/lib/Bitcode/Writer/ValueEnumerator.cpp
@@ -39,8 +39,6 @@
 
 /// ValueEnumerator - Enumerate module-level information.
 ValueEnumerator::ValueEnumerator(const Module *M) {
-  InstructionCount = 0;
-
   // Enumerate the global variables.
   for (Module::const_global_iterator I = M->global_begin(),
          E = M->global_end(); I != E; ++I)
@@ -377,6 +375,7 @@
 
 
 void ValueEnumerator::incorporateFunction(const Function &F) {
+  InstructionCount = 0;
   NumModuleValues = Values.size();
 
   // Adding function arguments to the value table.