[WIP]support matmul_v2_grad

cinn/frontend/op_mappers/paddle/matmul.cc

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include <absl/types/optional.h>
+
 #include "cinn/frontend/op_mapper_registry.h"
 #include "cinn/frontend/op_mappers/common_utils.h"
 
@@ -46,12 +48,79 @@ void MatMulOpMapper(const paddle::cpp::OpDesc& op_desc, const OpMapperContext& c
   ctx.AddVarModelToProgram(out_name, out->id);
 }
 
+void MatMulGradOpMapper(const paddle::cpp::OpDesc& op_desc, const OpMapperContext& ctx) {
+  // get dy
+  CHECK_EQ(op_desc.Input(paddle::GradVarName("Out")).size(), 1UL);
+  auto dout_name = op_desc.Input(paddle::GradVarName("Out")).front();
+
+  // get intput X and Y
+  CHECK_EQ(op_desc.Input("X").size(), 1UL);
+  auto x_name = op_desc.Input("X").front();
+  CHECK_EQ(op_desc.Input("Y").size(), 1UL);
+  auto y_name = op_desc.Input("Y").front();
+
+  // get d_x
+  std::string dx_name, dy_name;
+  bool has_dx = !op_desc.Output(paddle::GradVarName("X")).empty();
+  bool has_dy = !op_desc.Output(paddle::GradVarName("Y")).empty();
+  if (has_dx) {
+    CHECK_EQ(op_desc.Output(paddle::GradVarName("X")).size(), 1UL);
+    dx_name = op_desc.Output(paddle::GradVarName("X")).front();
+  }
+  if (has_dy) {
+    CHECK_EQ(op_desc.Output(paddle::GradVarName("Y")).size(), 1UL);
+    dy_name = op_desc.Output(paddle::GradVarName("Y")).front();
+  }
+
+  // get attr
+  auto trans_x = utils::GetAttrOrDefault<bool>(op_desc, "trans_x", false);
+  trans_x      = utils::GetAttrOrDefault<bool>(op_desc, "transpose_X", trans_x);
+
+  auto trans_y = utils::GetAttrOrDefault<bool>(op_desc, "trans_y", false);
+  trans_y      = utils::GetAttrOrDefault<bool>(op_desc, "transpose_Y", trans_y);
+
+  auto alpha = utils::GetAttrOrDefault<float>(op_desc, "alpha", 1.0f);
+
+  auto x    = ctx.GetVar(x_name);
+  auto y    = ctx.GetVar(y_name);
+  auto dout = ctx.GetVar(dout_name);
+  if (has_dx) {
+    absl::optional<Variable> dx;
+    if (trans_x && trans_y) {
+      dx = ctx.Builder()->Matmul(y, dout, true, true, alpha);
+    } else if (trans_x) {
+      dx = ctx.Builder()->Matmul(y, dout, false, true, alpha);
+    } else if (trans_y) {
+      dx = ctx.Builder()->Matmul(dout, y, false, false, alpha);
+    } else {
+      dx = ctx.Builder()->Matmul(dout, y, false, true, alpha);
+    }
+    ctx.AddVar(dx_name, dx.value());
+    ctx.AddVarModelToProgram(dx_name, dx.value()->id);
+  }
+  if (has_dy) {
+    absl::optional<Variable> dy;
+    if (trans_x && trans_y) {
+      dy = ctx.Builder()->Matmul(dout, x, true, true, alpha);
+    } else if (trans_x) {
+      dy = ctx.Builder()->Matmul(x, dout, false, false, alpha);
+    } else if (trans_y) {
+      dy = ctx.Builder()->Matmul(dout, x, true, false, alpha);
+    } else {
+      dy = ctx.Builder()->Matmul(x, dout, true, false, alpha);
+    }
+    ctx.AddVar(dy_name, dy.value());
+    ctx.AddVarModelToProgram(dy_name, dy.value()->id);
+  }
+}
+
 }  // namespace paddle_mappers
 }  // namespace frontend
 }  // namespace cinn
 
 CINN_REGISTER_HELPER(paddle_matmul) {
   CINN_REGISTER_OP_MAPPER(matmul, cinn::frontend::paddle_mappers::MatMulOpMapper)
   CINN_REGISTER_OP_MAPPER(matmul_v2, cinn::frontend::paddle_mappers::MatMulOpMapper)
+  CINN_REGISTER_OP_MAPPER(matmul_v2_grad, cinn::frontend::paddle_mappers::MatMulGradOpMapper)
   return true;
 }

python/tests/op_mappers/test_matmul_op.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+
+# Copyright (c) 2023 CINN Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+import numpy as np
+from op_mapper_test import OpMapperTest, logger
+import paddle
+
+
+class TestMatmulOp(OpMapperTest):
+    def init_input_data(self):
+        self.feed_data = {
+            "X": self.random([16, 32], "float32"),
+            "Y": self.random([32, 16], "float32")
+        }
+
+    def set_op_type(self):
+        return "matmul"
+
+    def set_op_inputs(self):
+        X = paddle.static.data('X', self.feed_data["X"].shape,
+                               self.feed_data["X"].dtype)
+        Y = paddle.static.data('Y', self.feed_data["Y"].shape,
+                               self.feed_data["Y"].dtype)
+        return {'X': [X], 'Y': [Y]}
+
+    def set_op_attrs(self):
+        return {"trans_x": False, "trans_y": False}
+
+    def set_op_outputs(self):
+        return {'Out': [str(self.feed_data['X'].dtype)]}
+
+    def test_check_results(self):
+        self.check_outputs_and_grads()
+
+
+if __name__ == "__main__":
+    unittest.main()