Fix smj q14a perf

Author: JkSelf

velox/exec/MergeJoin.cpp

@@ -627,6 +627,10 @@ bool MergeJoin::addToOutputForLeftJoin() {
           }
           addOutputRow(left, i, right, j);
         }
+
+        if (isLeftSemiFilterJoin(joinType_) && !filter_) {
+          break;
+        }
       }
     }
   }
@@ -710,6 +714,10 @@ bool MergeJoin::addToOutputForRightJoin() {
             addOutputRow(left, j, right, i);
           }
         }
+
+        if (isRightSemiFilterJoin(joinType_) && !filter_) {
+          break;
+        }
       }
     }
   }