[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.

llvm-svn: 206142

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/PHIElimination.cpp b/llvm/lib/CodeGen/PHIElimination.cpp
index 0e9df584847..2224f209da3 100644
--- a/llvm/lib/CodeGen/PHIElimination.cpp
+++ b/llvm/lib/CodeGen/PHIElimination.cpp
@@ -377,7 +377,7 @@ void PHIElimination::LowerPHINode(MachineBasicBlock &MBB,
       findPHICopyInsertPoint(&opBlock, &MBB, SrcReg);
 
     // Insert the copy.
-    MachineInstr *NewSrcInstr = 0;
+    MachineInstr *NewSrcInstr = nullptr;
     if (!reusedIncoming && IncomingReg) {
       if (SrcUndef) {
         // The source register is undefined, so there is no need for a real
@@ -546,7 +546,7 @@ bool PHIElimination::SplitPHIEdges(MachineFunction &MF,
   if (MBB.empty() || !MBB.front().isPHI() || MBB.isLandingPad())
     return false;   // Quick exit for basic blocks without PHIs.
 
-  const MachineLoop *CurLoop = MLI ? MLI->getLoopFor(&MBB) : 0;
+  const MachineLoop *CurLoop = MLI ? MLI->getLoopFor(&MBB) : nullptr;
   bool IsLoopHeader = CurLoop && &MBB == CurLoop->getHeader();
 
   bool Changed = false;
@@ -563,7 +563,7 @@ bool PHIElimination::SplitPHIEdges(MachineFunction &MF,
       // out-of-line blocks into the loop which is very bad for code placement.
       if (PreMBB == &MBB && !SplitAllCriticalEdges)
         continue;
-      const MachineLoop *PreLoop = MLI ? MLI->getLoopFor(PreMBB) : 0;
+      const MachineLoop *PreLoop = MLI ? MLI->getLoopFor(PreMBB) : nullptr;
       if (IsLoopHeader && PreLoop == CurLoop && !SplitAllCriticalEdges)
         continue;