1/*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20/*!
21 * \file unwrap_vector_expr.h
22 *
23 * \brief Centralized location for extraction of constraints from a boolean expression.
24 */
25
26#ifndef TVM_ARITH_UNWRAP_VECTOR_EXPR_H_
27#define TVM_ARITH_UNWRAP_VECTOR_EXPR_H_
28
29#include <tvm/tir/expr.h>
30
31#include <vector>
32
33namespace tvm {
34namespace arith {
35
36/* \brief Unwraps a component of a vector expression
37 *
38 * Utility to break up a vector expression into a specific component
39 * of the expression.
40 *
41 * Example: `Ramp(start, stride, n)` => `start + stride*lane`
42 * Example: `Broadcast(value, n)` => `value`
43 * Example: `2*Ramp(start, stride, n) + Broadcast(value,n)` => `2*(start + stride*lane) + value`
44 *
45 * \param vector_expr The vectorized expression to examine
46 *
47 * \param lane Which lane of the vectorized expression to extract.
48 *
49 * \returns A scalar expression
50 */
51PrimExpr UnwrapVectorExpr(const PrimExpr& vector_expr, const PrimExpr& lane);
52
53} // namespace arith
54} // namespace tvm
55
56#endif // TVM_ARITH_UNWRAP_VECTOR_EXPR_H_
57