[C++11] Use 'nullptr'.

llvm-svn: 210442
diff --git a/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp b/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
index d6d9907..0821ecc 100644
--- a/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
+++ b/llvm/lib/CodeGen/AtomicExpandLoadLinkedPass.cpp
@@ -312,7 +312,7 @@
   // Setup the builder so we can create any PHIs we need.
   Builder.SetInsertPoint(FailureBB, FailureBB->begin());
   BasicBlock *SuccessBB = FailureOrder == Monotonic ? BarrierBB : TryStoreBB;
-  PHINode *Success = 0, *Failure = 0;
+  PHINode *Success = nullptr, *Failure = nullptr;
 
   // Look for any users of the cmpxchg that are just comparing the loaded value
   // against the desired one, and replace them with the CFG-derived version.
diff --git a/llvm/lib/CodeGen/JumpInstrTables.cpp b/llvm/lib/CodeGen/JumpInstrTables.cpp
index 05a1b27c..61ef722 100644
--- a/llvm/lib/CodeGen/JumpInstrTables.cpp
+++ b/llvm/lib/CodeGen/JumpInstrTables.cpp
@@ -263,7 +263,7 @@
     if (F.hasFnAttribute(Attribute::JumpTable)) {
       assert(F.hasUnnamedAddr() &&
              "Attribute 'jumptable' requires 'unnamed_addr'");
-      Functions[&F] = NULL;
+      Functions[&F] = nullptr;
     }
   }