conv fuse for custom device (#60708)

paddle/fluid/framework/ir/conv_elementwise_add_act_fuse_pass.cc

@@ -175,6 +175,13 @@ void ConvElementwiseAddActFusePass::ApplyImpl(ir::Graph* graph) const {
     all_act_set.insert(cutlass_act_set.begin(), cutlass_act_set.end());
   }
 
+  std::unordered_set<std::string> custom_act_set{};
+  if (Get<bool>("use_custom_device")) {
+    custom_act_set = {
+        "identity", "relu", "sigmoid", "tanh", "swish", "leaky_relu"};
+    all_act_set.insert(custom_act_set.begin(), custom_act_set.end());
+  }
+
   patterns::ConvElementwiseaddAct pattern(gpd.mutable_pattern(), pattern_name);
   pattern(x, all_act_set);
   int found_count = 0;
@@ -197,7 +204,8 @@ void ConvElementwiseAddActFusePass::ApplyImpl(ir::Graph* graph) const {
     // When this fused_conv2d_add_act specified by problem size and act type is
     // not supported by cutlass and not supported by cuDNN, we should not apply
     // this pass.
-    if (!cutlass_can_fuse && !cudnn_can_fuse) {
+    bool custom_can_fuse = custom_act_set.count(act_op_type);
+    if (!cutlass_can_fuse && !cudnn_can_fuse && !custom_can_fuse) {
       return;
     }