revert to functionally equivalent formulation

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61895 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Writer/BitcodeWriter.cpp b/lib/Bitcode/Writer/BitcodeWriter.cpp
index ed9d4db..81a1a37 100644
--- a/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -833,7 +833,7 @@
     Vals.push_back(II->getCallingConv());
     Vals.push_back(VE.getValueID(II->getNormalDest()));
     Vals.push_back(VE.getValueID(II->getUnwindDest()));
-    PushValueAndType(II->getCalledFunction(), InstID, Vals, VE);
+    PushValueAndType(I.getOperand(0), InstID, Vals, VE); // callee
     
     // Emit value #'s for the fixed parameters.
     for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i)