chore: import upstream snapshot with attribution

python/paddle/incubate/cc/fuse.py

@@ -0,0 +1,32 @@
+# Copyright (c) 2025 PaddlePaddle 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.
+
+from contextlib import contextmanager
+
+import paddle
+
+__all__ = ['matmul', 'by_register']
+
+
+@contextmanager
+def by_register():
+    paddle._C_ops.ap_trivial_fusion_begin(None)
+    yield
+    paddle._C_ops.ap_trivial_fusion_end(None)
+
+
+def matmul(x, w, epilogue, **kwargs):
+    x = paddle.matmul(x, w, **kwargs)
+    with by_register():
+        return epilogue(x)