77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
//===-- WebAssemblyUtilities - WebAssembly Utility Functions ---*- 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
|
|
/// utility functions.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_UTILS_WEBASSEMBLYUTILITIES_H
|
|
#define LLVM_LIB_TARGET_WEBASSEMBLY_UTILS_WEBASSEMBLYUTILITIES_H
|
|
|
|
#include "llvm/Support/CommandLine.h"
|
|
|
|
namespace llvm {
|
|
|
|
class MachineBasicBlock;
|
|
class MachineInstr;
|
|
class MachineOperand;
|
|
class MCContext;
|
|
class MCSymbolWasm;
|
|
class TargetRegisterClass;
|
|
class WebAssemblyFunctionInfo;
|
|
class WebAssemblySubtarget;
|
|
|
|
namespace WebAssembly {
|
|
|
|
bool isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI);
|
|
bool mayThrow(const MachineInstr &MI);
|
|
|
|
// Exception handling / setjmp-longjmp handling command-line options
|
|
extern cl::opt<bool> WasmEnableEmEH; // asm.js-style EH
|
|
extern cl::opt<bool> WasmEnableEmSjLj; // asm.js-style SjLJ
|
|
extern cl::opt<bool> WasmEnableEH; // EH using Wasm EH instructions
|
|
extern cl::opt<bool> WasmEnableSjLj; // SjLj using Wasm EH instructions
|
|
|
|
// Exception-related function names
|
|
extern const char *const ClangCallTerminateFn;
|
|
extern const char *const CxaBeginCatchFn;
|
|
extern const char *const CxaRethrowFn;
|
|
extern const char *const StdTerminateFn;
|
|
extern const char *const PersonalityWrapperFn;
|
|
|
|
/// Returns the operand number of a callee, assuming the argument is a call
|
|
/// instruction.
|
|
const MachineOperand &getCalleeOp(const MachineInstr &MI);
|
|
|
|
/// Returns the __indirect_function_table, for use in call_indirect and in
|
|
/// function bitcasts.
|
|
MCSymbolWasm *
|
|
getOrCreateFunctionTableSymbol(MCContext &Ctx,
|
|
const WebAssemblySubtarget *Subtarget);
|
|
|
|
/// Returns the __funcref_call_table, for use in funcref calls when lowered to
|
|
/// table.set + call_indirect.
|
|
MCSymbolWasm *
|
|
getOrCreateFuncrefCallTableSymbol(MCContext &Ctx,
|
|
const WebAssemblySubtarget *Subtarget);
|
|
|
|
/// Find a catch instruction from an EH pad. Returns null if no catch
|
|
/// instruction found or the catch is in an invalid location.
|
|
MachineInstr *findCatch(MachineBasicBlock *EHPad);
|
|
|
|
/// Returns the appropriate copy opcode for the given register class.
|
|
unsigned getCopyOpcodeForRegClass(const TargetRegisterClass *RC);
|
|
|
|
} // end namespace WebAssembly
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|