# 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. import tvm def nop(): return tvm.stmt.Evaluate(0) def test_remove_no_op(): i = tvm.var('i') j = tvm.var('j') k = tvm.var('k') m = tvm.var('m') n = tvm.var('n') dtype = 'int64' Ab = tvm.decl_buffer((n, ), dtype) stmt = tvm.make.For( i, 0, 4, 0, 0, tvm.make.For( j, 0, n, 0, 0, tvm.make.For( k, 0, m, 0, 0, tvm.make.IfThenElse( (i*m+j+k < n), tvm.make.Evaluate(m), tvm.make.Evaluate(n))))) ret = tvm.ir_pass.RemoveNoOp(stmt) assert(isinstance(ret, tvm.stmt.Evaluate)) store = tvm.make.Store(Ab.data, tvm.make.Load(dtype, Ab.data, i) + 1, i + 1) stmt2 = tvm.stmt.SeqStmt([nop(), tvm.stmt.SeqStmt([store, nop()])]) assert(tvm.ir_pass.RemoveNoOp(stmt2) == store) # remove zero extent loop stmt3 = tvm.make.For(i, 0, 0, 0, 0, store) ret = tvm.ir_pass.RemoveNoOp(stmt3) assert(isinstance(ret, tvm.stmt.Evaluate)) if __name__ == "__main__": test_remove_no_op()