1 files changed, 28 insertions, 2 deletions
diff --git a/utils/TableGen/DAGISelMatcher.cpp b/utils/TableGen/DAGISelMatcher.cpp
index 5d6a11ae0dc7..9c4079906a38 100644
--- a/utils/TableGen/DAGISelMatcher.cpp
+++ b/utils/TableGen/DAGISelMatcher.cpp
@@ -43,7 +43,7 @@ Matcher *Matcher::unlinkNode(Matcher *Other) {
   for (; Cur && Cur->getNext() != Other; Cur = Cur->getNext())
     /*empty*/;
 
-  if (Cur == 0) return 0;
+  if (!Cur) return nullptr;
   Cur->takeNext();
   Cur->setNext(Other->takeNext());
   return this;
@@ -84,6 +84,15 @@ ScopeMatcher::~ScopeMatcher() {
     delete Children[i];
 }
 
+SwitchOpcodeMatcher::~SwitchOpcodeMatcher() {
+  for (unsigned i = 0, e = Cases.size(); i != e; ++i)
+    delete Cases[i].second;
+}
+
+SwitchTypeMatcher::~SwitchTypeMatcher() {
+  for (unsigned i = 0, e = Cases.size(); i != e; ++i)
+    delete Cases[i].second;
+}
 
 CheckPredicateMatcher::CheckPredicateMatcher(const TreePredicateFn &pred)
   : Matcher(CheckPredicate), Pred(pred.getOrigPatFragRecord()) {}
@@ -99,7 +108,7 @@ TreePredicateFn CheckPredicateMatcher::getPredicate() const {
 void ScopeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
   OS.indent(indent) << "Scope\n";
   for (unsigned i = 0, e = getNumChildren(); i != e; ++i) {
-    if (getChild(i) == 0)
+    if (!getChild(i))
       OS.indent(indent+1) << "NULL POINTER\n";
     else
       getChild(i)->print(OS, indent+2);
@@ -185,6 +194,11 @@ void CheckIntegerMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
   OS.indent(indent) << "CheckInteger " << Value << '\n';
 }
 
+void CheckChildIntegerMatcher::printImpl(raw_ostream &OS,
+                                         unsigned indent) const {
+  OS.indent(indent) << "CheckChildInteger " << ChildNo << " " << Value << '\n';
+}
+
 void CheckCondCodeMatcher::printImpl(raw_ostream &OS, unsigned indent) const {
   OS.indent(indent) << "CheckCondCode ISD::" << CondCodeName << '\n';
 }
@@ -411,6 +425,18 @@ bool CheckIntegerMatcher::isContradictoryImpl(const Matcher *M) const {
   return false;
 }
 
+bool CheckChildIntegerMatcher::isContradictoryImpl(const Matcher *M) const {
+  if (const CheckChildIntegerMatcher *CCIM = dyn_cast<CheckChildIntegerMatcher>(M)) {
+    // If the two checks are about different nodes, we don't know if they
+    // conflict!
+    if (CCIM->getChildNo() != getChildNo())
+      return false;
+
+    return CCIM->getValue() != getValue();
+  }
+  return false;
+}
+
 bool CheckValueTypeMatcher::isContradictoryImpl(const Matcher *M) const {
   if (const CheckValueTypeMatcher *CVT = dyn_cast<CheckValueTypeMatcher>(M))
     return CVT->getTypeName() != getTypeName();