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1// WebAssemblyDebugValueManager.h - WebAssembly DebugValue Manager -*- 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-exception6//7//===----------------------------------------------------------------------===//8///9/// \file10/// This file contains the declaration of the WebAssembly-specific11/// manager for DebugValues associated with the specific MachineInstr.12/// This pass currently does not handle DBG_VALUE_LISTs; they are assumed to13/// have been set to undef in NullifyDebugValueLists pass.14/// TODO Handle DBG_VALUE_LIST15///16//===----------------------------------------------------------------------===//17 18#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYDEBUGVALUEMANAGER_H19#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYDEBUGVALUEMANAGER_H20 21#include "llvm/ADT/SmallVector.h"22#include "llvm/CodeGen/Register.h"23 24namespace llvm {25 26class MachineInstr;27 28class WebAssemblyDebugValueManager {29 MachineInstr *Def;30 SmallVector<MachineInstr *, 1> DbgValues;31 Register CurrentReg;32 SmallVector<MachineInstr *, 1>33 getSinkableDebugValues(MachineInstr *Insert) const;34 bool isInsertSamePlace(MachineInstr *Insert) const;35 36public:37 WebAssemblyDebugValueManager(MachineInstr *Def);38 39 // Sink 'Def', and also sink its eligible DBG_VALUEs to the place before40 // 'Insert'. Convert the original DBG_VALUEs into undefs.41 void sink(MachineInstr *Insert);42 // Clone 'Def' (optionally), and also clone its eligible DBG_VALUEs to the43 // place before 'Insert'.44 void cloneSink(MachineInstr *Insert, Register NewReg = Register(),45 bool CloneDef = true) const;46 // Update the register for Def and DBG_VALUEs.47 void updateReg(Register Reg);48 // Replace the current register in DBG_VALUEs with the given LocalId target49 // index.50 void replaceWithLocal(unsigned LocalId);51 // Remove Def, and set its DBG_VALUEs to undef.52 void removeDef();53};54 55} // end namespace llvm56 57#endif58