etime: fix to support EXEC stage without FU.

src/etime/StandardXGraphBuilder.cpp

@@ -188,6 +188,16 @@ void StandardXGraphBuilder::createNodes(ParExeGraph *g, ParExeSequence *seq) {
 			}
 
 			// EXECUTE stage => expand functional unit's pipeline
+			else {
+
+				// no FU
+				if(stage->numFus() == 0) {
+					ParExeNode *node = makeNode(g, *inst, *stage);
+					inst->setFirstFUNode(node);
+					inst->setLastFUNode(node);
+				}
+
+				// multiple FUs: select one
 				else {
 					ParExePipeline *fu = stage->findFU(inst->inst()->kind());
 					ParExeNode *first = nullptr, *last = nullptr;
@@ -209,6 +219,7 @@ void StandardXGraphBuilder::createNodes(ParExeGraph *g, ParExeSequence *seq) {
 				}
 			}
 		}
+   }
 
 	g->setLastNode(last_node);
 }