wasm-call-descriptors.h

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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.
 
#ifndef V8_COMPILER_WASM_CALL_DESCRIPTORS_H_
#define V8_COMPILER_WASM_CALL_DESCRIPTORS_H_
 
#if !V8_ENABLE_WEBASSEMBLY
#error This header should only be included if WebAssembly is enabled.
#endif  // !V8_ENABLE_WEBASSEMBLY
 
#include <memory>
 
#include "src/common/globals.h"
 
namespace v8::internal {
 
class AccountingAllocator;
class Zone;
 
namespace compiler {
class CallDescriptor;
 
class WasmCallDescriptors {
 public:
  explicit WasmCallDescriptors(AccountingAllocator* allocator);
 
  compiler::CallDescriptor* GetBigIntToI64Descriptor(bool needs_frame_state) {
    if (needs_frame_state) {
      return bigint_to_i64_descriptor_with_framestate_;
    }
    return bigint_to_i64_descriptor_;
  }
 
#if V8_TARGET_ARCH_32_BIT
  V8_EXPORT_PRIVATE compiler::CallDescriptor* GetLoweredCallDescriptor(
      const compiler::CallDescriptor* original);
#else
  V8_EXPORT_PRIVATE compiler::CallDescriptor* GetLoweredCallDescriptor(
      const compiler::CallDescriptor* original) {
    UNREACHABLE();
  }
#endif  // V8_TARGET_ARCH_32_BIT
 
 private:
  std::unique_ptr<Zone> zone_;
 
  compiler::CallDescriptor* bigint_to_i64_descriptor_;
  compiler::CallDescriptor* bigint_to_i64_descriptor_with_framestate_;
 
#if V8_TARGET_ARCH_32_BIT
  compiler::CallDescriptor* bigint_to_i32pair_descriptor_;
  compiler::CallDescriptor* bigint_to_i32pair_descriptor_with_framestate_;
#endif  // V8_TARGET_ARCH_32_BIT
};
 
}  // namespace compiler
}  // namespace v8::internal
 
#endif  // V8_COMPILER_WASM_CALL_DESCRIPTORS_H_