prune faster depthwise (#1752)

* prune faster depthwise

* fix style

src/operators/kernel/arm/convolution/conv_add_bn_relu_kernel.cpp

@@ -72,11 +72,13 @@ bool ConvAddBNReluKernel<CPU, float>::Init(
           strides.size() == 2 && strides[0] == strides[1]) {
         int pad = paddings[0];
         int stride = strides[0];
-        const int hin = param->Input()->dims()[2];
-        if (pad == 0 && hin > 2) {
-          could_use_faster_depthwise_conv_ = true;
-        } else if (pad == 1) {
-          could_use_faster_depthwise_conv_ = true;
+        const int win = param->Input()->dims()[3];
+        if (pad == 1) {
+          if (stride == 1) {
+            could_use_faster_depthwise_conv_ = true;
+          } else if (stride == 2 && win > 7) {
+            could_use_faster_depthwise_conv_ = true;
+          }
         }
       }
       break;

src/operators/kernel/central-arm-func/conv_arm_func.cpp

@@ -292,11 +292,7 @@ void FasterDepthwiseConv3x3_bias_relu(const ConvParam<CPU> &param,
   const int hout = output->dims()[2];
   const int wout = output->dims()[3];
   bool flag_bias = bias != nullptr;
-  if (pad == 0 && hin > 2) {
-    math::depthwise::conv_depthwise_3x3p0(din, dout, num, chout, hout, wout,
-                                          chin, hin, win, weights, bias, stride,
-                                          flag_bias, flag_relu);
-  } else if (pad == 1) {
+  if (pad == 1) {
     math::depthwise::conv_depthwise_3x3p1(din, dout, num, chout, hout, wout,
                                           chin, hin, win, weights, bias, stride,
                                           flag_bias, flag_relu);

src/operators/math/depthwise/faster_depthwise_conv3x3.h

@@ -23,11 +23,6 @@ namespace operators {
 namespace math {
 namespace depthwise {
 
-void conv_depthwise_3x3p0(const float* din, float* dout, int num, int ch_out,
-                          int h_out, int w_out, int ch_in, int h_in, int w_in,
-                          const float* weights, const float* bias, int stride,
-                          bool flag_bias, bool flag_relu);
-
 void conv_depthwise_3x3p1(const float* din, float* dout, int num, int ch_out,
                           int h_out, int w_out, int ch_in, int h_in, int w_in,
                           const float* weights, const float* bias, int stride,

tools/python/fluidtools/run.py

@@ -295,7 +295,8 @@ def check_mobile_results(args, fuse, mem_opt):
     args = "{} {} {}".format("1" if fuse else "0", "1" if mem_opt else "0", args)
     res = sh("adb shell \"cd {} && export LD_LIBRARY_PATH=. && ./test-net {}\"".format(mobile_exec_root, args))
     lines = res.split("\n")
-    # print(lines)
+    # for line in lines:
+    #     print(line)
     for line in lines:
         if line.startswith("auto-test-debug"):
             print(line)