Index: utils/TableGen/CodeGenDAGPatterns.h
===================================================================
--- utils/TableGen/CodeGenDAGPatterns.h
+++ utils/TableGen/CodeGenDAGPatterns.h
@@ -684,12 +684,12 @@
 /// processed to produce isel.
 class PatternToMatch {
 public:
-  PatternToMatch(Record *srcrecord, ListInit *preds,
-                 TreePatternNode *src, TreePatternNode *dst,
-                 const std::vector<Record*> &dstregs,
+  PatternToMatch(Record *srcrecord, ListInit *preds, TreePatternNode *src,
+                 TreePatternNode *dst, std::vector<Record *> dstregs,
                  int complexity, unsigned uid)
-    : SrcRecord(srcrecord), Predicates(preds), SrcPattern(src), DstPattern(dst),
-      Dstregs(dstregs), AddedComplexity(complexity), ID(uid) {}
+      : SrcRecord(srcrecord), Predicates(preds), SrcPattern(src),
+        DstPattern(dst), Dstregs(std::move(dstregs)),
+        AddedComplexity(complexity), ID(uid) {}
 
   Record          *SrcRecord;   // Originating Record for the pattern.
   ListInit        *Predicates;  // Top level predicate conditions to match.
@@ -853,7 +853,7 @@
   void GenerateVariants();
   void VerifyInstructionFlags();
 
-  void AddPatternToMatch(TreePattern *Pattern, const PatternToMatch &PTM);
+  void AddPatternToMatch(TreePattern *Pattern, PatternToMatch &&PTM);
   void FindPatternInputsAndOutputs(TreePattern *I, TreePatternNode *Pat,
                                    std::map<std::string,
                                    TreePatternNode*> &InstInputs,
Index: utils/TableGen/CodeGenDAGPatterns.cpp
===================================================================
--- utils/TableGen/CodeGenDAGPatterns.cpp
+++ utils/TableGen/CodeGenDAGPatterns.cpp
@@ -3220,7 +3220,7 @@
 }
 
 void CodeGenDAGPatterns::AddPatternToMatch(TreePattern *Pattern,
-                                           const PatternToMatch &PTM) {
+                                           PatternToMatch &&PTM) {
   // Do some sanity checking on the pattern we're about to match.
   std::string Reason;
   if (!PTM.getSrcPattern()->canPatternMatch(Reason, *this)) {
@@ -3259,7 +3259,7 @@
         SrcNames[Entry.first].second == 1)
       Pattern->error("Pattern has dead named input: $" + Entry.first);
 
-  PatternsToMatch.push_back(PTM);
+  PatternsToMatch.push_back(std::move(PTM));
 }
 
 
@@ -3551,14 +3551,12 @@
     TreePattern Temp(Result.getRecord(), DstPattern, false, *this);
     Temp.InferAllTypes();
 
-
-    AddPatternToMatch(Pattern,
-                    PatternToMatch(CurPattern,
-                                   CurPattern->getValueAsListInit("Predicates"),
-                                   Pattern->getTree(0),
-                                   Temp.getOnlyTree(), InstImpResults,
-                                   CurPattern->getValueAsInt("AddedComplexity"),
-                                   CurPattern->getID()));
+    AddPatternToMatch(
+        Pattern,
+        PatternToMatch(
+            CurPattern, CurPattern->getValueAsListInit("Predicates"),
+            Pattern->getTree(0), Temp.getOnlyTree(), std::move(InstImpResults),
+            CurPattern->getValueAsInt("AddedComplexity"), CurPattern->getID()));
   }
 }