1 //===-- WebAssemblyUtilities - WebAssembly Utility Functions ---*- C++ -*-====// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 /// 9 /// \file 10 /// This file contains the declaration of the WebAssembly-specific 11 /// utility functions. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYUTILITIES_H 16 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYUTILITIES_H 17 18 namespace llvm { 19 20 class MachineBasicBlock; 21 class MachineInstr; 22 class MachineOperand; 23 class MCContext; 24 class MCSymbolWasm; 25 class StringRef; 26 class WebAssemblyFunctionInfo; 27 28 namespace WebAssembly { 29 30 bool isChild(const MachineInstr &MI, const WebAssemblyFunctionInfo &MFI); 31 bool mayThrow(const MachineInstr &MI); 32 33 // Exception-related function names 34 extern const char *const ClangCallTerminateFn; 35 extern const char *const CxaBeginCatchFn; 36 extern const char *const CxaRethrowFn; 37 extern const char *const StdTerminateFn; 38 extern const char *const PersonalityWrapperFn; 39 40 /// Returns the operand number of a callee, assuming the argument is a call 41 /// instruction. 42 const MachineOperand &getCalleeOp(const MachineInstr &MI); 43 44 /// Returns the operand number of a callee, assuming the argument is a call 45 /// instruction. 46 MCSymbolWasm *getOrCreateFunctionTableSymbol(MCContext &Ctx, 47 const StringRef &Name); 48 49 /// Find a catch instruction from an EH pad. Returns null if no catch 50 /// instruction found or the catch is in an invalid location. 51 MachineInstr *findCatch(MachineBasicBlock *EHPad); 52 53 } // end namespace WebAssembly 54 55 } // end namespace llvm 56 57 #endif 58