Refine 3x3 int8 conv implementation

test/CMakeLists.txt

@@ -220,6 +220,10 @@ if (NOT FOUND_MATCH)
     ADD_EXECUTABLE(test-dequantize-op operators/test_dequantize_op.cpp test_helper.h test_include.h)
     target_link_libraries(test-dequantize-op paddle-mobile)
 
+    # test int8 conv op
+    ADD_EXECUTABLE(test-int8-conv-op operators/test_int8_conv_op.cpp test_helper.h test_include.h)
+    target_link_libraries(test-int8-conv-op paddle-mobile)
+
     # gen test log
     ADD_EXECUTABLE(test-log common/test_log.cpp)
     target_link_libraries(test-log paddle-mobile)

test/operators/test_int8_conv_op.cpp

@@ -139,11 +139,11 @@ int TestConvOp() {
   int dilation_h = 1;
   int dilation_w = 1;
 
-  int batch_size = 2;
+  int batch_size = 1;
   int input_c = 3;
-  int input_h = 100;
-  int input_w = 100;
-  int output_c = 8;
+  int input_h = 25;
+  int input_w = 25;
+  int output_c = 3;
   framework::DDim input_shape =
       framework::make_ddim({batch_size, input_c, input_h, input_w});
   framework::DDim filter_shape =
@@ -158,11 +158,11 @@ int TestConvOp() {
 
   auto input_var = scope.get()->Var("input");
   auto input = input_var->template GetMutable<framework::LoDTensor>();
-  SetupTensor<Itype>(input, input_shape, -7, 7);
+  SetupTensor<Itype>(input, input_shape, -127, 127);
 
   auto filter_var = scope.get()->Var("filter");
   auto filter = filter_var->template GetMutable<framework::LoDTensor>();
-  SetupTensor<Itype>(filter, filter_shape, -7, 7);
+  SetupTensor<Itype>(filter, filter_shape, -127, 127);
 
   auto output_var = scope.get()->Var("output");
   framework::AttributeMap attrs;