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// Copyright 2022 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#if !V8_ENABLE_WEBASSEMBLY
#error This header should only be included if WebAssembly is enabled.
#endif // !V8_ENABLE_WEBASSEMBLY
#ifndef V8_COMPILER_WASM_GC_LOWERING_H_
#define V8_COMPILER_WASM_GC_LOWERING_H_
#include "src/compiler/graph-reducer.h"
#include "src/compiler/wasm-compiler-definitions.h"
#include "src/compiler/wasm-graph-assembler.h"
namespace v8 {
namespace internal {
namespace compiler {
class MachineGraph;
class SourcePositionTable;
class WasmGraphAssembler;
class WasmGCLowering final : public AdvancedReducer {
public:
WasmGCLowering(Editor* editor, MachineGraph* mcgraph,
const wasm::WasmModule* module, bool disable_trap_handler,
SourcePositionTable* source_position_table);
const char* reducer_name() const override { return "WasmGCLowering"; }
Reduction Reduce(Node* node) final;
private:
Reduction ReduceWasmTypeCheck(Node* node);
Reduction ReduceWasmTypeCheckAbstract(Node* node);
Reduction ReduceWasmTypeCast(Node* node);
Reduction ReduceWasmTypeCastAbstract(Node* node);
Reduction ReduceAssertNotNull(Node* node);
Reduction ReduceNull(Node* node);
Reduction ReduceIsNull(Node* node);
Reduction ReduceIsNotNull(Node* node);
Reduction ReduceRttCanon(Node* node);
Reduction ReduceTypeGuard(Node* node);
Reduction ReduceWasmExternInternalize(Node* node);
Reduction ReduceWasmExternExternalize(Node* node);
Reduction ReduceWasmStructGet(Node* node);
Reduction ReduceWasmStructSet(Node* node);
Reduction ReduceWasmArrayGet(Node* node);
Reduction ReduceWasmArraySet(Node* node);
Reduction ReduceWasmArrayLength(Node* node);
Reduction ReduceWasmArrayInitializeLength(Node* node);
Reduction ReduceStringAsWtf16(Node* node);
Reduction ReduceStringPrepareForGetCodeunit(Node* node);
Node* Null(wasm::ValueType type);
Node* IsNull(Node* object, wasm::ValueType type);
Node* BuildLoadExternalPointerFromObject(Node* object, int offset,
ExternalPointerTag tag);
void UpdateSourcePosition(Node* new_node, Node* old_node);
NullCheckStrategy null_check_strategy_;
WasmGraphAssembler gasm_;
const wasm::WasmModule* module_;
Node* dead_;
const MachineGraph* mcgraph_;
SourcePositionTable* source_position_table_;
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_WASM_GC_LOWERING_H_
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