Function-local metadata whose operands had been optimized to no longer refer to function-local IR were not getting written by BitcodeWriter; solution is for these metadata to be enumerated just like global metadata.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95467 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Writer/ValueEnumerator.cpp b/lib/Bitcode/Writer/ValueEnumerator.cpp
index 3eacc5e..595497f6 100644
--- a/lib/Bitcode/Writer/ValueEnumerator.cpp
+++ b/lib/Bitcode/Writer/ValueEnumerator.cpp
@@ -93,7 +93,7 @@
         for (User::const_op_iterator OI = I->op_begin(), E = I->op_end();
              OI != E; ++OI) {
           if (MDNode *MD = dyn_cast<MDNode>(*OI))
-            if (MD->isFunctionLocal())
+            if (MD->isFunctionLocal() && MD->getFunction())
               // These will get enumerated during function-incorporation.
               continue;
           EnumerateOperandType(*OI);
@@ -415,7 +415,7 @@
       for (User::const_op_iterator OI = I->op_begin(), E = I->op_end();
            OI != E; ++OI) {
         if (MDNode *MD = dyn_cast<MDNode>(*OI))
-          if (MD->isFunctionLocal())
+          if (MD->isFunctionLocal() && MD->getFunction())
             // Enumerate metadata after the instructions they might refer to.
             FunctionLocalMDs.push_back(MD);
       }