1 // Copyright (c) 2020 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #ifndef SOURCE_FUZZ_TRANSFORMATION_ADD_LOCAL_VARIABLE_H_
16 #define SOURCE_FUZZ_TRANSFORMATION_ADD_LOCAL_VARIABLE_H_
17 
18 #include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
19 #include "source/fuzz/transformation.h"
20 #include "source/fuzz/transformation_context.h"
21 #include "source/opt/ir_context.h"
22 
23 namespace spvtools {
24 namespace fuzz {
25 
26 class TransformationAddLocalVariable : public Transformation {
27  public:
28   explicit TransformationAddLocalVariable(
29       const protobufs::TransformationAddLocalVariable& message);
30 
31   TransformationAddLocalVariable(uint32_t fresh_id, uint32_t type_id,
32                                  uint32_t function_id, uint32_t initializer_id,
33                                  bool value_is_irrelevant);
34 
35   // - |message_.fresh_id| must not be used by the module
36   // - |message_.type_id| must be the id of a pointer type with Function
37   //   storage class
38   // - |message_.initializer_id| must be the id of a constant with the same
39   //   type as the pointer's pointee type
40   // - |message_.function_id| must be the id of a function
41   bool IsApplicable(
42       opt::IRContext* ir_context,
43       const TransformationContext& transformation_context) const override;
44 
45   // Adds an instruction to the start of |message_.function_id|, of the form:
46   //   |message_.fresh_id| = OpVariable |message_.type_id| Function
47   //                         |message_.initializer_id|
48   // If |message_.value_is_irrelevant| holds, adds a corresponding fact to the
49   // fact manager in |transformation_context|.
50   void Apply(opt::IRContext* ir_context,
51              TransformationContext* transformation_context) const override;
52 
53   std::unordered_set<uint32_t> GetFreshIds() const override;
54 
55   protobufs::Transformation ToMessage() const override;
56 
57  private:
58   protobufs::TransformationAddLocalVariable message_;
59 };
60 
61 }  // namespace fuzz
62 }  // namespace spvtools
63 
64 #endif  // SOURCE_FUZZ_TRANSFORMATION_ADD_LOCAL_VARIABLE_H_
65