Revert "Refactor conv computeINT8" (#20640)

* Revert "Refactor conv computeINT8 (#19574)"

This reverts commit 2c32c2d6.

test=develop

* replace PADDLE_ENFORCE
test=develop

paddle/fluid/platform/mkldnn_reuse.h

@@ -816,6 +816,15 @@ class ConvMKLDNNTemplateHandler : public MKLDNNHandler {
                             mkldnn::engine engine, const std::string& base_key)
       : platform::MKLDNNHandler(dev_ctx, engine, base_key) {}
 
+  // TODO(jczaja): remove after conv int8 is adapted
+  ConvMKLDNNTemplateHandler(
+      std::shared_ptr<typename forward_t::primitive_desc> conv_pd,
+      const platform::MKLDNNDeviceContext& dev_ctx, mkldnn::engine engine,
+      const std::string& base_key)
+      : platform::MKLDNNHandler(dev_ctx, engine, base_key) {
+    conv_pd_ = conv_pd;
+  }
+
   ConvMKLDNNTemplateHandler(
       std::shared_ptr<typename forward_t::primitive_desc> conv_pd,
       std::shared_ptr<typename backward_data_t::primitive_desc>
@@ -1136,6 +1145,47 @@ using ConvTransposeMKLDNNHandler =
                               mkldnn::deconvolution_backward_data,
                               mkldnn::deconvolution_backward_weights>;
 
+template <typename T>
+static std::shared_ptr<mkldnn::memory> SetDstMemory(
+    const framework::ExecutionContext& ctx, framework::Tensor* output,
+    const std::shared_ptr<ConvMKLDNNHandler>& handler) {
+  T* output_data =
+      output->mutable_data<T>(ctx.GetPlace(), handler->GetDstMemorySize());
+  std::shared_ptr<mkldnn::memory> dst_memory_p =
+      handler->AcquireDstMemoryFromPrimitive(to_void_cast<T>(output_data));
+  return dst_memory_p;
+}
+
+template <typename T>
+static std::shared_ptr<mkldnn::memory> SetDstMemory(
+    const framework::ExecutionContext& ctx, framework::Tensor* output,
+    const framework::Tensor* residual_param,
+    const mkldnn::memory::desc& user_residual_md,
+    const std::shared_ptr<ConvMKLDNNHandler>& handler,
+    std::vector<mkldnn::primitive>* pipeline) {
+  const T* residual_param_data = residual_param->data<T>();
+  PADDLE_ENFORCE(residual_param_data != nullptr,
+                 "Provide data if you want MKLDNN conv+elementwise_add fusion");
+  std::shared_ptr<mkldnn::memory> user_residual_memory_p =
+      handler->AcquireResidualDataMemory(user_residual_md,
+                                         to_void_cast<T>(residual_param_data));
+  T* output_data = output->mutable_data<T>(ctx.GetPlace());
+  std::shared_ptr<mkldnn::memory> dst_memory_p =
+      handler->AcquireDstMemoryFromResidualDataMemory(
+          user_residual_memory_p, to_void_cast<T>(output_data), *pipeline);
+  return dst_memory_p;
+}
+
+template <typename T>
+static void SetDstMemoryHandler(
+    const framework::ExecutionContext& ctx, framework::Tensor* output,
+    const std::shared_ptr<ConvMKLDNNHandler>& handler,
+    std::shared_ptr<mkldnn::memory> dst_memory_p) {
+  T* output_data =
+      output->mutable_data<T>(ctx.GetPlace(), handler->GetDstMemorySize());
+  dst_memory_p->set_data_handle(to_void_cast<T>(output_data));
+}
+
 template <typename T>
 static void SetDstMemoryQuantized(
     const framework::ExecutionContext& ctx, framework::Tensor* output,