NicolaLancellotti commented on a change in pull request #10344:
URL: https://github.com/apache/tvm/pull/10344#discussion_r816961090
##########
File path: python/tvm/relay/backend/contrib/ethosu/tir/passes.py
##########
@@ -64,13 +65,16 @@ def ReplaceOperators():
"ethosu_identity": get_identity_params,
"ethosu_unary_elementwise": get_unary_elementwise_params,
}
- pointer_to_producer = {}
- pointer_to_consumer = {}
+ producers_consumers = ProducersConsumers()
replace_output_pointer = {}
pointer_to_extents = {}
ReplaceInfo = namedtuple("ReplaceInfo", ["pointer", "reallocate"])
+ def _pointer_to_extend(stmt):
Review comment:
Done.
##########
File path: python/tvm/relay/backend/contrib/ethosu/tir/producers_consumers.py
##########
@@ -0,0 +1,77 @@
+# 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.
+# pylint: disable=invalid-name, unused-argument
+"""The ProducersConsumers class"""
+from typing import Optional
+from collections.abc import KeysView
+import tvm
+
+
+class ProducersConsumers:
+ """It associates pointers with the loop nest that produces
+ their values and with the loop nest that consumes their values."""
+
+ def __init__(self) -> None:
+ self.indices: dict[tvm.tir.AttrStmt, int] = {}
+ self.producers: list[(tvm.tir.AttrStmt, tvm.tir.expr.Var)] = []
+ self.consumers: list[(tvm.tir.AttrStmt, list[tvm.tir.expr.Var])] = []
+
+ def add_producer(self, var: tvm.tir.expr.Var, attr: tvm.tir.AttrStmt) ->
None:
+ """Add the attribute statement attr as producer of the variable var."""
+ self.indices[attr] = len(self.producers)
+ self.producers.append((attr, var))
+
+ def get_producer(
+ self, var: tvm.tir.expr.Var, attr: tvm.tir.AttrStmt
+ ) -> Optional[tvm.tir.AttrStmt]:
+ """Get the last attribute statement which produces the variable var
when
+ the current attribute statement is attr."""
+ if var not in self.allocate_variables:
+ return None
+
+ index = self.indices[attr]
+ for i in list(reversed(range(index + 1))):
+ if self.producers[i][1] == var:
+ return self.producers[i][0]
+ return None
+
+ def get_last_producer(self, var: tvm.tir.expr.Var) ->
Optional[tvm.tir.AttrStmt]:
+ """Get the last attribute statement which produces the variable var."""
+ return self.get_producer(var, self.producers[-1][0])
+
+ def add_allocate_variables(self, allocate_variables: KeysView) -> None:
+ """Add the allocated variables."""
+ self.allocate_variables = allocate_variables
Review comment:
Done.
##########
File path: python/tvm/relay/backend/contrib/ethosu/tir/transform.py
##########
@@ -21,19 +21,16 @@
from .utils import get_base_address, get_op_attrs
-def get_copy_params(stmt, producers, consumers):
+def get_copy_params(stmt, producers_consumers):
Review comment:
No, we cannot. All functions in `ReplaceOperators`'s `op_map` must have
the same signature.
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