From 15d5f6b9efa864f1c5c21afd88193654a4576f9f Mon Sep 17 00:00:00 2001
From: xiaoxiaohehe001 <49090790+xiaoxiaohehe001@users.noreply.github.com>
Date: Fri, 1 Apr 2022 19:52:28 +0800
Subject: [PATCH] reshape_opteller (#41090)

fix_reshape: for paddle-trt
---
 paddle/fluid/inference/tensorrt/op_teller.cc | 21 +++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/paddle/fluid/inference/tensorrt/op_teller.cc b/paddle/fluid/inference/tensorrt/op_teller.cc
index fe0332025e..13c16ab689 100644
--- a/paddle/fluid/inference/tensorrt/op_teller.cc
+++ b/paddle/fluid/inference/tensorrt/op_teller.cc
@@ -1479,8 +1479,27 @@ bool OpTeller::Tell(const framework::ir::Node* node, bool use_no_calib_int8,
       std::vector<int> shape =
           BOOST_GET_CONST(std::vector<int>, desc.GetAttr("shape"));
       if (shape.size() >= nvinfer1::Dims::MAX_DIMS) return false;
-      if (!with_dynamic_shape && (shape[0] == -1 || shape.size() == 1))
+      if (!with_dynamic_shape) {
+        if (shape.size() == 1) {
+          return false;
+        }
+        if (shape[0] == 0) {
+          return true;
+        } else {
+          auto* block = desc.Block();
+          auto x_var_name = desc.Input("X")[0];
+          auto* x_var_desc = block->FindVar(x_var_name);
+          const auto x_shape = x_var_desc->GetShape();
+          int input_num = std::accumulate(x_shape.begin() + 1, x_shape.end(), 1,
+                                          std::multiplies<int>());
+          int shape_num = std::accumulate(shape.begin() + 1, shape.end(), 1,
+                                          std::multiplies<int>());
+          if (input_num == shape_num) {
+            return true;
+          }
+        }
         return false;
+      }
     }
 
     if (op_type == "clip") {
-- 
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