chore: import upstream snapshot with attribution

python/tvm/backend/hexagon/__init__.py

@@ -0,0 +1,51 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+"""Hexagon-owned backend hooks."""
+
+from importlib import import_module
+from pathlib import Path
+
+from tvm_ffi.libinfo import load_lib_ctypes
+
+from tvm.base import _LOADED_LIBS
+
+_LAZY_SUBMODULES = {"target_tags"}
+
+
+def register_backend():
+    """Register Hexagon-owned Python semantics."""
+    runtime_dir = Path(_LOADED_LIBS["tvm_runtime"]._name).resolve().parent
+    try:
+        # Runtime sidecars only need registration side effects; libtvm_runtime is global.
+        _LOADED_LIBS["tvm_runtime_hexagon"] = load_lib_ctypes(
+            package="tvm",
+            target_name="tvm_runtime_hexagon",
+            extra_lib_paths=[runtime_dir],
+            mode="RTLD_LOCAL",
+        )
+    except (OSError, FileNotFoundError, RuntimeError):
+        pass
+    import_module(f"{__name__}.target_tags")
+
+
+def __getattr__(name: str):
+    if name in _LAZY_SUBMODULES:
+        return import_module(f"{__name__}.{name}")
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
+
+__all__ = ["register_backend", "target_tags"]

python/tvm/backend/hexagon/target_tags.py

@@ -0,0 +1,56 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+"""Qualcomm Hexagon target tags."""
+
+from tvm.target import register_tag
+
+_ONE_MB = 2**20
+
+_HEXAGON_VERSIONS = {
+    "v65": {"vtcm": _ONE_MB // 4, "mattr": ["+hvxv65", "+hvx-length128b"]},
+    "v66": {"vtcm": _ONE_MB // 4, "mattr": ["+hvxv66", "+hvx-length128b"]},
+    "v68": {
+        "vtcm": 4 * _ONE_MB,
+        "mattr": ["+hvxv68", "+hvx-length128b", "+hvx-qfloat", "-hvx-ieee-fp"],
+        "llvm-options": ["-force-hvx-float"],
+    },
+    "v69": {
+        "vtcm": 8 * _ONE_MB,
+        "mattr": ["+hvxv69", "+hvx-length128b", "+hvx-qfloat", "-hvx-ieee-fp"],
+    },
+    "v73": {
+        "vtcm": 8 * _ONE_MB,
+        "mattr": ["+hvxv73", "+hvx-length128b", "+hvx-qfloat", "-hvx-ieee-fp"],
+    },
+    "v75": {
+        "vtcm": 8 * _ONE_MB,
+        "mattr": ["+hvxv75", "+hvx-length128b", "+hvx-qfloat", "-hvx-ieee-fp"],
+    },
+}
+
+for _ver, _info in _HEXAGON_VERSIONS.items():
+    _config = {
+        "kind": "hexagon",
+        "mtriple": "hexagon",
+        "mcpu": "hexagon" + _ver,
+        "mattr": _info["mattr"],
+        "num-cores": 4,
+        "vtcm-capacity": _info["vtcm"],
+    }
+    if "llvm-options" in _info:
+        _config["llvm-options"] = _info["llvm-options"]
+    register_tag("qcom/hexagon-" + _ver, _config)