fix nested parallel loop introduced by linalg op lowering (#302)

fix nested parallel loop

Author: zhiczhong

lib/gc/Transforms/Pipeline.cpp

@@ -182,7 +182,7 @@ void populateCPUPipeline(mlir::OpPassManager &pm) {
   populateBufferizationPasses(pm);
   // REMOVE this pass after the TensorPasses are added. Currently we add this
   // pass to make the pipeline work properly
-  pm.addNestedPass<func::FuncOp>(createConvertLinalgToParallelLoopsPass());
+  pm.addNestedPass<func::FuncOp>(createConvertLinalgToLoopsPass());
   populateMicroKernelPasses(pm);
   populateCPURuntimePasses(pm);
   // back-end, llvm dialect