WebAssemblyTypeUtilities.h

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//===-- WebAssemblyTypeUtilities - WebAssembly Type Utilities---*- C++ -*-====//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contains the declaration of the WebAssembly-specific type parsing
/// utility functions.
///
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_UTILS_WEBASSEMBLYTYPEUTILITIES_H
#define LLVM_LIB_TARGET_WEBASSEMBLY_UTILS_WEBASSEMBLYTYPEUTILITIES_H
 
#include "MCTargetDesc/WebAssemblyMCTypeUtilities.h"
#include "WasmAddressSpaces.h"
#include "llvm/BinaryFormat/Wasm.h"
#include "llvm/CodeGenTypes/MachineValueType.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/MC/MCSymbolWasm.h"
 
namespace llvm {
 
namespace WebAssembly {
 
/// Return true if this is a WebAssembly Externref Type.
inline bool isWebAssemblyExternrefType(const Type *Ty) {
  const TargetExtType *TargetTy = dyn_cast<TargetExtType>(Ty);
  return TargetTy && TargetTy->getName() == "wasm.externref";
}
 
/// Return true if this is a WebAssembly Funcref Type.
inline bool isWebAssemblyFuncrefType(const Type *Ty) {
  const TargetExtType *TargetTy = dyn_cast<TargetExtType>(Ty);
  return TargetTy && TargetTy->getName() == "wasm.funcref";
}
 
/// Return true if this is a WebAssembly Reference Type.
inline bool isWebAssemblyReferenceType(const Type *Ty) {
  return isWebAssemblyExternrefType(Ty) || isWebAssemblyFuncrefType(Ty);
}
 
/// Return true if the table represents a WebAssembly table type.
inline bool isWebAssemblyTableType(const Type *Ty) {
  return Ty->isArrayTy() &&
         isWebAssemblyReferenceType(Ty->getArrayElementType());
}
 
// Convert StringRef to ValType / HealType / BlockType
 
MVT parseMVT(StringRef Type);
 
// Convert a MVT into its corresponding wasm ValType.
wasm::ValType toValType(MVT Type);
 
/// Sets a Wasm Symbol Type.
void wasmSymbolSetType(MCSymbolWasm *Sym, const Type *GlobalVT,
                       ArrayRef<MVT> VTs, bool Mutable);
 
} // end namespace WebAssembly
} // end namespace llvm
 
#endif