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 intrin_rule.h |
22 | * \brief Utility to generate intrinsic rules |
23 | */ |
24 | #ifndef TVM_TARGET_INTRIN_RULE_H_ |
25 | #define TVM_TARGET_INTRIN_RULE_H_ |
26 | |
27 | #include <tvm/runtime/registry.h> |
28 | #include <tvm/tir/builtin.h> |
29 | #include <tvm/tir/expr.h> |
30 | |
31 | #include <string> |
32 | |
33 | namespace tvm { |
34 | namespace codegen { |
35 | namespace intrin { |
36 | using namespace tir; |
37 | |
38 | // Add float suffix to the intrinsics |
39 | struct FloatSuffix { |
40 | std::string operator()(DataType t, std::string name) const { |
41 | if (t == DataType::Float(32)) { |
42 | return name + 'f'; |
43 | } else if (t == DataType::Float(64)) { |
44 | return name; |
45 | } else { |
46 | return "" ; |
47 | } |
48 | } |
49 | }; |
50 | |
51 | // Return the intrinsic name |
52 | struct Direct { |
53 | std::string operator()(DataType t, std::string name) const { return name; } |
54 | }; |
55 | |
56 | // Call pure extern function. |
57 | template <typename T> |
58 | inline PrimExpr DispatchPureExtern(const PrimExpr& e) { |
59 | const CallNode* call = e.as<CallNode>(); |
60 | ICHECK(call != nullptr); |
61 | // Use string based dispatch to extern for backward compact |
62 | // TODO(tvm-team) replace once the new dispatching system is inplace. |
63 | const OpNode* op = call->op.as<OpNode>(); |
64 | ICHECK(op != nullptr); |
65 | std::string name = op->name; |
66 | ICHECK_EQ(name.substr(0, 4), "tir." ); |
67 | name = T()(call->dtype, name.substr(4)); |
68 | |
69 | if (name.length() != 0) { |
70 | Array<PrimExpr> new_args = {StringImm(name)}; |
71 | for (auto arg : call->args) { |
72 | new_args.push_back(arg); |
73 | } |
74 | return Call(call->dtype, builtin::call_pure_extern(), new_args); |
75 | } else { |
76 | return e; |
77 | } |
78 | } |
79 | |
80 | } // namespace intrin |
81 | } // namespace codegen |
82 | } // namespace tvm |
83 | #endif // TVM_TARGET_INTRIN_RULE_H_ |
84 | |