1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// Copyright (c) 2020 Google LLC
//
// Licensed 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.
#include "source/fuzz/transformation_add_constant_null.h"
#include "source/fuzz/fuzzer_util.h"
namespace spvtools {
namespace fuzz {
TransformationAddConstantNull::TransformationAddConstantNull(
spvtools::fuzz::protobufs::TransformationAddConstantNull message)
: message_(std::move(message)) {}
TransformationAddConstantNull::TransformationAddConstantNull(uint32_t fresh_id,
uint32_t type_id) {
message_.set_fresh_id(fresh_id);
message_.set_type_id(type_id);
}
bool TransformationAddConstantNull::IsApplicable(
opt::IRContext* context, const TransformationContext& /*unused*/) const {
// A fresh id is required.
if (!fuzzerutil::IsFreshId(context, message_.fresh_id())) {
return false;
}
auto type = context->get_def_use_mgr()->GetDef(message_.type_id());
// The type must exist.
if (!type) {
return false;
}
// The type must be one of the types for which null constants are allowed,
// according to the SPIR-V spec.
return fuzzerutil::IsNullConstantSupported(context, *type);
}
void TransformationAddConstantNull::Apply(
opt::IRContext* ir_context, TransformationContext* /*unused*/) const {
auto new_instruction = MakeUnique<opt::Instruction>(
ir_context, spv::Op::OpConstantNull, message_.type_id(),
message_.fresh_id(), opt::Instruction::OperandList());
auto new_instruction_ptr = new_instruction.get();
ir_context->module()->AddGlobalValue(std::move(new_instruction));
fuzzerutil::UpdateModuleIdBound(ir_context, message_.fresh_id());
// Inform the def-use manager about the new instruction. Invalidate the
// constant manager as we have added a new constant.
ir_context->get_def_use_mgr()->AnalyzeInstDef(new_instruction_ptr);
ir_context->InvalidateAnalyses(opt::IRContext::kAnalysisConstants);
}
protobufs::Transformation TransformationAddConstantNull::ToMessage() const {
protobufs::Transformation result;
*result.mutable_add_constant_null() = message_;
return result;
}
std::unordered_set<uint32_t> TransformationAddConstantNull::GetFreshIds()
const {
return {message_.fresh_id()};
}
} // namespace fuzz
} // namespace spvtools
|
