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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 /// 9 /// \file 10 /// This file contains the declaration of the WebAssembly-specific 11 /// manager for DebugValues associated with the specific MachineInstr. 12 /// This pass currently does not handle DBG_VALUE_LISTs; they are assumed to 13 /// have been set to undef in NullifyDebugValueLists pass. 14 /// TODO Handle DBG_VALUE_LIST 15 /// 16 //===----------------------------------------------------------------------===// 17 18 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYDEBUGVALUEMANAGER_H 19 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYDEBUGVALUEMANAGER_H 20 21 #include "llvm/ADT/SmallVector.h" 22 #include "llvm/CodeGen/Register.h" 23 24 namespace llvm { 25 26 class MachineInstr; 27 28 class 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 36 public: 37 WebAssemblyDebugValueManager(MachineInstr *Def); 38 39 // Sink 'Def', and also sink its eligible DBG_VALUEs to the place before 40 // '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 the 43 // 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 target 49 // index. 50 void replaceWithLocal(unsigned LocalId); 51 // Remove Def, and set its DBG_VALUEs to undef. 52 void removeDef(); 53 }; 54 55 } // end namespace llvm 56 57 #endif 58