1 files changed, 12 insertions, 11 deletions

diff --git a/utils/TableGen/DAGISelMatcherOpt.cpp b/utils/TableGen/DAGISelMatcherOpt.cpp
index b7f3b6c..0b117eb 100644
--- a/utils/TableGen/DAGISelMatcherOpt.cpp
+++ b/utils/TableGen/DAGISelMatcherOpt.cpp
@@ -11,7 +11,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define DEBUG_TYPE "isel-opt"
 #include "DAGISelMatcher.h"
 #include "CodeGenDAGPatterns.h"
 #include "llvm/ADT/DenseSet.h"
@@ -20,13 +19,15 @@
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
+#define DEBUG_TYPE "isel-opt"
+
 /// ContractNodes - Turn multiple matcher node patterns like 'MoveChild+Record'
 /// into single compound nodes like RecordChild.
 static void ContractNodes(std::unique_ptr<Matcher> &MatcherPtr,
                           const CodeGenDAGPatterns &CGP) {
   // If we reached the end of the chain, we're done.
   Matcher *N = MatcherPtr.get();
-  if (N == 0) return;
+  if (!N) return;
   
   // If we have a scope node, walk down all of the children.
   if (ScopeMatcher *Scope = dyn_cast<ScopeMatcher>(N)) {
@@ -41,7 +42,7 @@ static void ContractNodes(std::unique_ptr<Matcher> &MatcherPtr,
   // If we found a movechild node with a node that comes in a 'foochild' form,
   // transform it.
   if (MoveChildMatcher *MC = dyn_cast<MoveChildMatcher>(N)) {
-    Matcher *New = 0;
+    Matcher *New = nullptr;
     if (RecordMatcher *RM = dyn_cast<RecordMatcher>(MC->getNext()))
       if (MC->getChildNo() < 8)  // Only have RecordChild0...7
         New = new RecordChildMatcher(MC->getChildNo(), RM->getWhatFor(),
@@ -191,7 +192,7 @@ static void SinkPatternPredicates(std::unique_ptr<Matcher> &MatcherPtr) {
   // Recursively scan for a PatternPredicate.
   // If we reached the end of the chain, we're done.
   Matcher *N = MatcherPtr.get();
-  if (N == 0) return;
+  if (!N) return;
   
   // Walk down all members of a scope node.
   if (ScopeMatcher *Scope = dyn_cast<ScopeMatcher>(N)) {
@@ -206,7 +207,7 @@ static void SinkPatternPredicates(std::unique_ptr<Matcher> &MatcherPtr) {
   // If this node isn't a CheckPatternPredicateMatcher we keep scanning until
   // we find one.
   CheckPatternPredicateMatcher *CPPM =dyn_cast<CheckPatternPredicateMatcher>(N);
-  if (CPPM == 0)
+  if (!CPPM)
     return SinkPatternPredicates(N->getNextPtr());
   
   // Ok, we found one, lets try to sink it. Check if we can sink it past the
@@ -236,7 +237,7 @@ static Matcher *FindNodeWithKind(Matcher *M, Matcher::KindTy Kind) {
   for (; M; M = M->getNext())
     if (M->getKind() == Kind)
       return M;
-  return 0;
+  return nullptr;
 }
 
 
@@ -255,11 +256,11 @@ static Matcher *FindNodeWithKind(Matcher *M, Matcher::KindTy Kind) {
 static void FactorNodes(std::unique_ptr<Matcher> &MatcherPtr) {
   // If we reached the end of the chain, we're done.
   Matcher *N = MatcherPtr.get();
-  if (N == 0) return;
+  if (!N) return;
   
   // If this is not a push node, just scan for one.
   ScopeMatcher *Scope = dyn_cast<ScopeMatcher>(N);
-  if (Scope == 0)
+  if (!Scope)
     return FactorNodes(N->getNextPtr());
   
   // Okay, pull together the children of the scope node into a vector so we can
@@ -335,7 +336,7 @@ static void FactorNodes(std::unique_ptr<Matcher> &MatcherPtr) {
       // or the same as what we're looking for.  If so, reorder it.
       if (Optn->isSimplePredicateOrRecordNode()) {
         Matcher *M2 = FindNodeWithKind(ScanMatcher, Optn->getKind());
-        if (M2 != 0 && M2 != ScanMatcher &&
+        if (M2 && M2 != ScanMatcher &&
             M2->canMoveBefore(ScanMatcher) &&
             (M2->isEqual(Optn) || M2->isContradictory(Optn))) {
           Matcher *MatcherWithoutM2 = ScanMatcher->unlinkNode(M2);
@@ -399,7 +400,7 @@ static void FactorNodes(std::unique_ptr<Matcher> &MatcherPtr) {
   }
   
   if (NewOptionsToMatch.empty()) {
-    MatcherPtr.reset(0);
+    MatcherPtr.reset(nullptr);
     return;
   }
   
@@ -427,7 +428,7 @@ static void FactorNodes(std::unique_ptr<Matcher> &MatcherPtr) {
       CheckTypeMatcher *CTM =
         cast_or_null<CheckTypeMatcher>(FindNodeWithKind(NewOptionsToMatch[i],
                                                         Matcher::CheckType));
-      if (CTM == 0 ||
+      if (!CTM ||
           // iPTR checks could alias any other case without us knowing, don't
           // bother with them.
           CTM->getType() == MVT::iPTR ||