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https://github.com/KhronosGroup/SPIRV-Tools
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abe2eff36f
The following implementations are introduced: - Transformation and fuzzer pass for expanding vector reduction. - Unit tests to cover the instructions with different vector sizes. Fixes #3768.
68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
// Copyright (c) 2020 André Perez Maselco
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/fuzz/fuzzer_pass_expand_vector_reductions.h"
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#include "source/fuzz/fuzzer_util.h"
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#include "source/fuzz/instruction_descriptor.h"
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#include "source/fuzz/transformation_expand_vector_reduction.h"
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namespace spvtools {
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namespace fuzz {
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FuzzerPassExpandVectorReductions::FuzzerPassExpandVectorReductions(
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opt::IRContext* ir_context, TransformationContext* transformation_context,
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FuzzerContext* fuzzer_context,
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protobufs::TransformationSequence* transformations)
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: FuzzerPass(ir_context, transformation_context, fuzzer_context,
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transformations) {}
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FuzzerPassExpandVectorReductions::~FuzzerPassExpandVectorReductions() = default;
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void FuzzerPassExpandVectorReductions::Apply() {
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for (auto& function : *GetIRContext()->module()) {
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for (auto& block : function) {
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for (auto& instruction : block) {
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// Randomly decides whether the transformation will be applied.
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if (!GetFuzzerContext()->ChoosePercentage(
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GetFuzzerContext()->GetChanceOfExpandingVectorReduction())) {
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continue;
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}
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// |instruction| must be OpAny or OpAll.
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if (instruction.opcode() != SpvOpAny &&
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instruction.opcode() != SpvOpAll) {
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continue;
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}
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// It must be able to make a synonym of |instruction|.
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if (!fuzzerutil::CanMakeSynonymOf(
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GetIRContext(), *GetTransformationContext(), &instruction)) {
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continue;
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}
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// Applies the expand vector reduction transformation.
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ApplyTransformation(TransformationExpandVectorReduction(
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instruction.result_id(),
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GetFuzzerContext()->GetFreshIds(
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TransformationExpandVectorReduction::GetRequiredFreshIdCount(
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GetIRContext(), &instruction))));
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}
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}
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}
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}
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} // namespace fuzz
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} // namespace spvtools
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