fixed OrderingOps mirror for M7

Author: TiarkRompf

src/common/OrderingOps.scala

@@ -75,8 +75,8 @@ trait OrderingOpsExp extends OrderingOps with VariablesExp {
     case e@OrderingGT(a,b) => ordering_gt(f(a),f(b))(e.aev,e.mev,pos)
     case e@OrderingGTEQ(a,b) => ordering_gteq(f(a),f(b))(e.aev,e.mev,pos)
     case e@OrderingEquiv(a,b) => ordering_equiv(f(a),f(b))(e.aev,e.mev,pos)
-    case e@OrderingMax(a,b) => ordering_max(f(a),f(b))(e.aev,e.mev,pos)
-    case e@OrderingMin(a,b) => ordering_min(f(a),f(b))(e.aev,e.mev,pos)
+    case e@OrderingMax(a,b) => ordering_max(f(a),f(b))(e.aev.asInstanceOf[Ordering[A]],mtype(e.mev),pos)
+    case e@OrderingMin(a,b) => ordering_min(f(a),f(b))(e.aev.asInstanceOf[Ordering[A]],mtype(e.mev),pos)
     case _ => super.mirror(e, f)
     }).asInstanceOf[Exp[A]]
   }

test-out/epfl/test11-stencil0.check

@@ -25,10 +25,6 @@ x1
   End of Generated Code                  
 *******************************************/
 
-<stdin>:18: warning: a pure expression does nothing in statement position; you may be omitting necessary parentheses
-x12
-^
-one warning found
 compilation: ok
 8.0
 12.0

test-out/epfl/test11-stencil2a.check

@@ -28,10 +28,6 @@ x2
   End of Generated Code                  
 *******************************************/
 
-<stdin>:21: warning: a pure expression does nothing in statement position; you may be omitting necessary parentheses
-x15
-^
-one warning found
 compilation: ok
 0.0
 0.8800000000000001

test-out/epfl/test11-stencil3a.check

@@ -42,10 +42,6 @@ x2
   End of Generated Code                  
 *******************************************/
 
-<stdin>:35: warning: a pure expression does nothing in statement position; you may be omitting necessary parentheses
-x29
-^
-one warning found
 compilation: ok
 0.0
 0.0