Gabor points out that reserveOperandSpace takes # of values, 
not # of operands as an input.

llvm-svn: 49599
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 1d8def9..141d5e1 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1476,7 +1476,7 @@
       if (!Ty) return Error("Invalid PHI record");
       
       PHINode *PN = PHINode::Create(Ty);
-      PN->reserveOperandSpace(Record.size()-1);
+      PN->reserveOperandSpace((Record.size()-1)/2);
       
       for (unsigned i = 0, e = Record.size()-1; i != e; i += 2) {
         Value *V = getFnValueByID(Record[1+i], Ty);