4 files changed, 4 insertions, 4 deletions
diff --git a/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp b/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp
index c0009cb9899..674ce3aea71 100644
--- a/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/llvm/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -89,7 +89,7 @@ bool MemoryDependenceAnalysis::runOnFunction(Function &) {
   AA = &getAnalysis<AliasAnalysis>();
   TD = getAnalysisIfAvailable<DataLayout>();
   DT = getAnalysisIfAvailable<DominatorTree>();
-  if (PredCache == 0)
+  if (!PredCache)
     PredCache.reset(new PredIteratorCache());
   return false;
 }
diff --git a/llvm/lib/CodeGen/RegAllocGreedy.cpp b/llvm/lib/CodeGen/RegAllocGreedy.cpp
index 9eed1fc62ac..49748289dac 100644
--- a/llvm/lib/CodeGen/RegAllocGreedy.cpp
+++ b/llvm/lib/CodeGen/RegAllocGreedy.cpp
@@ -713,7 +713,7 @@ bool RAGreedy::addSplitConstraints(InterferenceCache::Cursor Intf,
     Intf.moveToBlock(BC.Number);
     BC.Entry = BI.LiveIn ? SpillPlacement::PrefReg : SpillPlacement::DontCare;
     BC.Exit = BI.LiveOut ? SpillPlacement::PrefReg : SpillPlacement::DontCare;
-    BC.ChangesValue = BI.FirstDef;
+    BC.ChangesValue = BI.FirstDef.isValid();
 
     if (!Intf.hasInterference())
       continue;
diff --git a/llvm/lib/Support/SourceMgr.cpp b/llvm/lib/Support/SourceMgr.cpp
index fac3cad5cc2..4f650b42cce 100644
--- a/llvm/lib/Support/SourceMgr.cpp
+++ b/llvm/lib/Support/SourceMgr.cpp
@@ -65,7 +65,7 @@ unsigned SourceMgr::AddIncludeFile(const std::string &Filename,
     MemoryBuffer::getFile(IncludedFile.c_str(), NewBuf);
   }
 
-  if (NewBuf == 0) return ~0U;
+  if (!NewBuf) return ~0U;
 
   return AddNewSourceBuffer(NewBuf.take(), IncludeLoc);
 }
diff --git a/llvm/lib/Support/Windows/Windows.h b/llvm/lib/Support/Windows/Windows.h
index 5c1da0d617a..2ddd15efa19 100644
--- a/llvm/lib/Support/Windows/Windows.h
+++ b/llvm/lib/Support/Windows/Windows.h
@@ -75,7 +75,7 @@ public:
   }
 
   // True if Handle is valid.
-  operator bool() const {
+  LLVM_EXPLICIT operator bool() const {
     return HandleTraits::IsValid(Handle) ? true : false;
   }