src/wasm/wasm-opcodes.cc

// Copyright 2015 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.

#include "src/wasm/wasm-opcodes.h"

#include <array>

#include "src/codegen/signature.h"
#include "src/wasm/wasm-features.h"
#include "src/wasm/wasm-module.h"
#include "src/wasm/wasm-opcodes-inl.h"

namespace v8 {
namespace internal {
namespace wasm {

std::ostream& operator<<(std::ostream& os, const FunctionSig& sig) {
  if (sig.return_count() == 0) os << "v";
  for (auto ret : sig.returns()) {
    os << ret.short_name();
  }
  os << "_";
  if (sig.parameter_count() == 0) os << "v";
  for (auto param : sig.parameters()) {
    os << param.short_name();
  }
  return os;
}

bool IsJSCompatibleSignature(const CanonicalSig* sig) {
  for (auto type : sig->all()) {
    if (type == kWasmS128) return false;
    if (type.is_ref() && !type.has_index()) {
      switch (type.generic_kind()) {
        case GenericKind::kStringViewWtf8:
        case GenericKind::kStringViewWtf16:
        case GenericKind::kStringViewIter:
        case GenericKind::kExn:
        case GenericKind::kNoExn:
        case GenericKind::kCont:
        case GenericKind::kNoCont:
          return false;
        default:
          break;
      }
    }
  }
  return true;
}

// Define constexpr arrays.
constexpr uint8_t LoadType::kLoadSizeLog2[];
constexpr ValueType LoadType::kValueType[];
constexpr MachineType LoadType::kMemType[];
constexpr uint8_t StoreType::kStoreSizeLog2[];
constexpr ValueType StoreType::kValueType[];
constexpr MachineRepresentation StoreType::kMemRep[];

}  // namespace wasm
}  // namespace internal
}  // namespace v8