Merge branch 'depthwise-bug' into 'master'

Fix depthwise benchmark bug and add abort logic when there is no op registered.

See merge request !63

mace/core/net.cc

@@ -23,7 +23,9 @@ SimpleNet::SimpleNet(const std::shared_ptr<const NetDef>& net_def,
     std::unique_ptr<OperatorBase> op{nullptr};
     OperatorDef temp_def(operator_def);
     op = CreateOperator(temp_def, ws, type);
-    operators_.emplace_back(std::move(op));
+    if (!op) {
+      operators_.emplace_back(std::move(op));
+    }
   }
 }
 bool SimpleNet::Run() {

mace/core/registry.h

@@ -26,8 +26,7 @@ class Registry {
 
   unique_ptr<ObjectType> Create(const SrcType& key, Args... args) {
     if (registry_.count(key) == 0) {
-      VLOG(2) << "Key not registered: " << key;
-      return nullptr;
+      LOG(FATAL) << "Key not registered: " << key;
     }
     return registry_[key](args...);
   }

mace/ops/depthwise_conv_2d_benchmark.cc

@@ -25,7 +25,7 @@ static void DepthwiseConv2d(int iters,
   mace::testing::StopTiming();
 
   OpsTestNet net;
-  OpDefBuilder("DepthwiseConv2D", "DepthwiseConv2DTest")
+  OpDefBuilder("DepthwiseConv2d", "DepthwiseConv2dTest")
       .Input("Input")
       .Input("Filter")
       .Input("Bias")