SPIRV-Tools/source/spirv_stats.h

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// Copyright (c) 2017 Google Inc.
//
// 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.
#ifndef LIBSPIRV_SPIRV_STATS_H_
#define LIBSPIRV_SPIRV_STATS_H_
#include <string>
#include <unordered_map>
#include <vector>
#include "spirv-tools/libspirv.hpp"
namespace libspirv {
struct SpirvStats {
// Version histogram, version_word -> count.
std::unordered_map<uint32_t, uint32_t> version_hist;
// Generator histogram, generator_word -> count.
std::unordered_map<uint32_t, uint32_t> generator_hist;
// Capability histogram, SpvCapabilityXXX -> count.
std::unordered_map<uint32_t, uint32_t> capability_hist;
// Extension histogram, extension_string -> count.
std::unordered_map<std::string, uint32_t> extension_hist;
// Opcode histogram, SpvOpXXX -> count.
std::unordered_map<uint32_t, uint32_t> opcode_hist;
// OpConstant u16 histogram, value -> count.
std::unordered_map<uint16_t, uint32_t> u16_constant_hist;
// OpConstant u32 histogram, value -> count.
std::unordered_map<uint32_t, uint32_t> u32_constant_hist;
// OpConstant u64 histogram, value -> count.
std::unordered_map<uint64_t, uint32_t> u64_constant_hist;
// OpConstant s16 histogram, value -> count.
std::unordered_map<int16_t, uint32_t> s16_constant_hist;
// OpConstant s32 histogram, value -> count.
std::unordered_map<int32_t, uint32_t> s32_constant_hist;
// OpConstant s64 histogram, value -> count.
std::unordered_map<int64_t, uint32_t> s64_constant_hist;
// OpConstant f32 histogram, value -> count.
std::unordered_map<float, uint32_t> f32_constant_hist;
// OpConstant f64 histogram, value -> count.
std::unordered_map<double, uint32_t> f64_constant_hist;
// Used to collect statistics on opcodes triggering other opcodes.
// Container scheme: gap between instructions -> cue opcode -> later opcode
// -> count.
// For example opcode_markov_hist[2][OpFMul][OpFAdd] corresponds to
// the number of times an OpMul appears, followed by 2 other instructions,
// followed by OpFAdd.
// opcode_markov_hist[0][OpFMul][OpFAdd] corresponds to how many times
// OpFMul appears, directly followed by OpFAdd.
// The size of the outer std::vector also serves as an input parameter,
// determining how many steps will be collected.
// I.e. do opcode_markov_hist.resize(1) to collect data for one step only.
std::vector<std::unordered_map<uint32_t,
std::unordered_map<uint32_t, uint32_t>>> opcode_markov_hist;
};
// Aggregates existing |stats| with new stats extracted from |binary|.
spv_result_t AggregateStats(
const spv_context_t& context, const uint32_t* words, const size_t num_words,
spv_diagnostic* pDiagnostic, SpirvStats* stats);
} // namespace libspirv
#endif // LIBSPIRV_SPIRV_STATS_H_