(Almost) always call reserveOperandSpace() on newly created PHINodes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128535 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Transforms/Utils/Local.cpp b/unittests/Transforms/Utils/Local.cpp
index e0322b3..7d17351 100644
--- a/unittests/Transforms/Utils/Local.cpp
+++ b/unittests/Transforms/Utils/Local.cpp
@@ -27,6 +27,7 @@
 
   builder.SetInsertPoint(bb0);
   PHINode    *phi = builder.CreatePHI(Type::getInt32Ty(C));
+  phi->reserveOperandSpace(2);
   BranchInst *br0 = builder.CreateCondBr(builder.getTrue(), bb0, bb1);
 
   builder.SetInsertPoint(bb1);