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

// Copyright (c) 2022 The Khronos Group Inc.
// Copyright (c) 2022 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/eliminate_dead_io_components_pass.h"

#include <vector>

#include "source/opt/instruction.h"
#include "source/opt/ir_context.h"
#include "source/util/bit_vector.h"

namespace spvtools {
namespace opt {
namespace {
constexpr uint32_t kAccessChainBaseInIdx = …;
constexpr uint32_t kAccessChainIndex0InIdx = …;
constexpr uint32_t kAccessChainIndex1InIdx = …;
constexpr uint32_t kConstantValueInIdx = …;
}  // namespace

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

unsigned EliminateDeadIOComponentsPass::FindMaxIndex(
    const Instruction& var, const unsigned original_max,
    const bool skip_first_index) { … }

void EliminateDeadIOComponentsPass::ChangeArrayLength(Instruction& arr_var,
                                                      unsigned length) { … }

void EliminateDeadIOComponentsPass::ChangeIOVarStructLength(Instruction& io_var,
                                                            unsigned length) { … }

}  // namespace opt
}  // namespace spvtools