chromium/third_party/spirv-tools/src/source/opt/local_single_store_elim_pass.cpp

// Copyright (c) 2017 The Khronos Group Inc.
// Copyright (c) 2017 Valve Corporation
// Copyright (c) 2017 LunarG 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.

#include "source/opt/local_single_store_elim_pass.h"

#include "source/cfa.h"
#include "source/util/string_utils.h"

namespace spvtools {
namespace opt {
namespace {
constexpr uint32_t kStoreValIdInIdx = …;
constexpr uint32_t kVariableInitIdInIdx = …;
}  // namespace

bool LocalSingleStoreElimPass::LocalSingleStoreElim(Function* func) { … }

bool LocalSingleStoreElimPass::AllExtensionsSupported() const { … }

Pass::Status LocalSingleStoreElimPass::ProcessImpl() { … }

LocalSingleStoreElimPass::LocalSingleStoreElimPass() = default;

Pass::Status LocalSingleStoreElimPass::Process() { … }

void LocalSingleStoreElimPass::InitExtensionAllowList() { … }
bool LocalSingleStoreElimPass::ProcessVariable(Instruction* var_inst) { … }

bool LocalSingleStoreElimPass::RewriteDebugDeclares(Instruction* store_inst,
                                                    uint32_t var_id) { … }

Instruction* LocalSingleStoreElimPass::FindSingleStoreAndCheckUses(
    Instruction* var_inst, const std::vector<Instruction*>& users) const { … }

void LocalSingleStoreElimPass::FindUses(
    const Instruction* var_inst, std::vector<Instruction*>* users) const { … }

bool LocalSingleStoreElimPass::FeedsAStore(Instruction* inst) const { … }

bool LocalSingleStoreElimPass::RewriteLoads(
    Instruction* store_inst, const std::vector<Instruction*>& uses,
    bool* all_rewritten) { … }

}  // namespace opt
}  // namespace spvtools