tests: benchdnn: graph: remove useless data type alignment

Author: wzt1997

tests/benchdnn/graph/graph_memory.cpp

@@ -26,18 +26,6 @@ dnn_graph_mem_t::dnn_graph_mem_t(const dnn_mem_t &mem,
     const auto &prim_dt = mem.dt();
     const auto &graph_dt = static_cast<dnnl_data_type_t>(lt.get_data_type());
 
-    // For int8 cases, as graph driver will modify the data type of leading
-    // ops to u8/s8 in the reference path and use corresponding drivers to
-    // generate data, special handling is needed. If it's found that data
-    // type in ref path is u8/s8, it will be used.
-    //
-    // The reason why not always using primitive data type is that the driver
-    // rewrites data type in graph path for bf16 case handling. So we prefer
-    // data type in graph, and for int8 cases, that from ref path will be used.
-    //
-    dnnl_data_type_t c_data_type
-            = prim_dt == dnnl_s8 || prim_dt == dnnl_u8 ? prim_dt : graph_dt;
-
     // Get memory tag of primitive memory
     int ndims = mem.ndims();
     dims_t strides(mem.strides(), mem.strides() + ndims);
@@ -58,7 +46,7 @@ dnn_graph_mem_t::dnn_graph_mem_t(const dnn_mem_t &mem,
     // otherwise use shape & tag from ref path side
 
     // Create memory for graph path
-    const auto data_type = static_cast<dnnl::memory::data_type>(c_data_type);
+    const auto data_type = static_cast<dnnl::memory::data_type>(graph_dt);
     if (is_op_input) {
         if (graph_dims_.empty()) graph_dims_.push_back(1);
         if (graph_strides_.empty()) graph_strides_.push_back(1);
@@ -74,9 +62,9 @@ dnn_graph_mem_t::dnn_graph_mem_t(const dnn_mem_t &mem,
             std::memcpy(graph_data_handle, prim_data_handle, graph_mem.size());
         };
 
-        if (prim_dt != c_data_type) {
+        if (prim_dt != graph_dt) {
             dnn_mem_t c_mem(
-                    ndims, mem.dims(), c_data_type, mtag, ::get_test_engine());
+                    ndims, mem.dims(), graph_dt, mtag, ::get_test_engine());
             c_mem.reorder(mem);
             prim_to_graph_memcpy(mem_, c_mem);
         } else {
@@ -87,7 +75,7 @@ dnn_graph_mem_t::dnn_graph_mem_t(const dnn_mem_t &mem,
             dnnl::memory::desc md(graph_dims_, data_type, graph_strides_);
             mem_ = dnn_mem_t(md.get(), ::get_test_engine());
         } else {
-            mem_ = dnn_mem_t(mem.md_, c_data_type, mtag, ::get_test_engine());
+            mem_ = dnn_mem_t(mem.md_, graph_dt, mtag, ::get_test_engine());
         }
     }
 }