//===-- 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_WEBASSEMBLYUTILITIES_H #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYUTILITIES_H #include "llvm/CodeGen/MachineBasicBlock.h" namespace llvm { class WebAssemblyFunctionInfo; namespace WebAssembly { bool isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI); bool mayThrow(const MachineInstr &MI); // 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; /// Return the "bottom" block of an entity, which can be either a MachineLoop or /// WebAssemblyException. This differs from MachineLoop::getBottomBlock in that /// it works even if the entity is discontiguous. template <typename T> MachineBasicBlock *getBottom(const T *Unit) { MachineBasicBlock *Bottom = Unit->getHeader(); for (MachineBasicBlock *MBB : Unit->blocks()) if (MBB->getNumber() > Bottom->getNumber()) Bottom = MBB; return Bottom; } /// Returns the operand number of a callee, assuming the argument is a call /// instruction. const MachineOperand &getCalleeOp(const MachineInstr &MI); } // end namespace WebAssembly } // end namespace llvm #endif |