diff --git a/llvm/include/llvm/IR/BasicBlock.h b/llvm/include/llvm/IR/BasicBlock.h
--- a/llvm/include/llvm/IR/BasicBlock.h
+++ b/llvm/include/llvm/IR/BasicBlock.h
@@ -96,9 +96,7 @@
   /// before the specified basic block.
   static BasicBlock *Create(LLVMContext &Context, const Twine &Name = "",
                             Function *Parent = nullptr,
-                            BasicBlock *InsertBefore = nullptr) {
-    return new BasicBlock(Context, Name, Parent, InsertBefore);
-  }
+                            BasicBlock *InsertBefore = nullptr);
 
   /// Return the enclosing method, or null if none.
   const Function *getParent() const { return Parent; }
diff --git a/llvm/lib/IR/BasicBlock.cpp b/llvm/lib/IR/BasicBlock.cpp
--- a/llvm/lib/IR/BasicBlock.cpp
+++ b/llvm/lib/IR/BasicBlock.cpp
@@ -36,6 +36,11 @@
   return getType()->getContext();
 }
 
+BasicBlock *BasicBlock::Create(LLVMContext &Context, const Twine &Name,
+                               Function *Parent, BasicBlock *InsertBefore) {
+  return new BasicBlock(Context, Name, Parent, InsertBefore);
+}
+
 template <> void llvm::invalidateParentIListOrdering(BasicBlock *BB) {
   BB->invalidateOrders();
 }