vortex tutorial assignment 5 solution

sim/simX/execute.cpp

@@ -712,6 +712,11 @@ void Warp::execute(const Instr &instr, Pipeline *pipeline) {
         pipeline->stall_warp = true; 
         runOnce = true;       
       } break;
+      case 5: {
+        // PREFETCH
+        int addr = rsdata[0];
+        printf("*** PREFETCHED %d ***\n", addr);
+      } break;
       default:
         std::abort();
       }