chromium/third_party/skia/src/sksl/transform/SkSLEliminateDeadLocalVariables.cpp

/*
 * Copyright 2021 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "include/core/SkSpan.h"
#include "include/core/SkTypes.h"
#include "src/core/SkTHash.h"
#include "src/sksl/SkSLAnalysis.h"
#include "src/sksl/SkSLModule.h"
#include "src/sksl/SkSLProgramSettings.h"
#include "src/sksl/analysis/SkSLProgramUsage.h"
#include "src/sksl/ir/SkSLBinaryExpression.h"
#include "src/sksl/ir/SkSLExpression.h"
#include "src/sksl/ir/SkSLExpressionStatement.h"
#include "src/sksl/ir/SkSLFunctionDefinition.h"
#include "src/sksl/ir/SkSLNop.h"
#include "src/sksl/ir/SkSLProgram.h"
#include "src/sksl/ir/SkSLProgramElement.h"
#include "src/sksl/ir/SkSLStatement.h"
#include "src/sksl/ir/SkSLVarDeclarations.h"
#include "src/sksl/ir/SkSLVariable.h"
#include "src/sksl/ir/SkSLVariableReference.h"
#include "src/sksl/transform/SkSLProgramWriter.h"
#include "src/sksl/transform/SkSLTransform.h"

#include <memory>
#include <utility>
#include <vector>

usingnamespaceskia_private;

namespace SkSL {

class Context;

static bool eliminate_dead_local_variables(const Context& context,
                                           SkSpan<std::unique_ptr<ProgramElement>> elements,
                                           ProgramUsage* usage) { … }

bool Transform::EliminateDeadLocalVariables(const Context& context,
                                            Module& module,
                                            ProgramUsage* usage) { … }

bool Transform::EliminateDeadLocalVariables(Program& program) { … }

}  // namespace SkSL