[TableGen] Add some std::move to the PatternToMatch constructor.

The are two vectors passed by value to the constructor. We should be able to move them into the object.

llvm-svn: 337114

utils/TableGen/CodeGenDAGPatterns.h

@@ -1022,7 +1022,7 @@ public:
                  std::vector<Record *> dstregs, int complexity,
                  unsigned uid, unsigned setmode = 0)
       : SrcRecord(srcrecord), SrcPattern(src), DstPattern(dst),
-        Predicates(preds), Dstregs(dstregs),
+        Predicates(std::move(preds)), Dstregs(std::move(dstregs)),
         AddedComplexity(complexity), ID(uid), ForceMode(setmode) {}
 
   Record          *SrcRecord;   // Originating Record for the pattern.