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https://github.com/KhronosGroup/SPIRV-Tools
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87a3f651e2
Added data structure to SpirvStats which is used to collect statistics on opcodes following other opcodes. Added a simple analysis print-out to spirv-stats.
65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
// Copyright (c) 2017 Google Inc.
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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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#ifndef LIBSPIRV_SPIRV_STATS_H_
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#define LIBSPIRV_SPIRV_STATS_H_
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include "spirv-tools/libspirv.hpp"
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namespace libspirv {
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struct SpirvStats {
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// Version histogram, version_word -> count.
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std::unordered_map<uint32_t, uint32_t> version_hist;
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// Generator histogram, generator_word -> count.
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std::unordered_map<uint32_t, uint32_t> generator_hist;
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// Capability histogram, SpvCapabilityXXX -> count.
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std::unordered_map<uint32_t, uint32_t> capability_hist;
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// Extension histogram, extension_string -> count.
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std::unordered_map<std::string, uint32_t> extension_hist;
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// Opcode histogram, SpvOpXXX -> count.
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std::unordered_map<uint32_t, uint32_t> opcode_hist;
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// Used to collect statistics on opcodes triggering other opcodes.
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// Container scheme: gap between instructions -> cue opcode -> later opcode
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// -> count.
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// For example opcode_markov_hist[2][OpFMul][OpFAdd] corresponds to
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// the number of times an OpMul appears, followed by 2 other instructions,
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// followed by OpFAdd.
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// opcode_markov_hist[0][OpFMul][OpFAdd] corresponds to how many times
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// OpFMul appears, directly followed by OpFAdd.
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// The size of the outer std::vector also serves as an input parameter,
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// determining how many steps will be collected.
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// I.e. do opcode_markov_hist.resize(1) to collect data for one step only.
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std::vector<std::unordered_map<uint32_t,
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std::unordered_map<uint32_t, uint32_t>>> opcode_markov_hist;
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};
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// Aggregates existing |stats| with new stats extracted from |binary|.
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spv_result_t AggregateStats(
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const spv_context_t& context, const uint32_t* words, const size_t num_words,
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spv_diagnostic* pDiagnostic, SpirvStats* stats);
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} // namespace libspirv
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#endif // LIBSPIRV_SPIRV_STATS_H_
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