1 //===- MachineSSAContext.h --------------------------------------*- 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 /// \file 9 /// 10 /// This file declares a specialization of the GenericSSAContext<X> 11 /// template class for Machine IR. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_CODEGEN_MACHINESSACONTEXT_H 16 #define LLVM_CODEGEN_MACHINESSACONTEXT_H 17 18 #include "llvm/CodeGen/MachineBasicBlock.h" 19 #include "llvm/Support/Printable.h" 20 21 namespace llvm { 22 class MachineRegisterInfo; 23 class MachineInstr; 24 class MachineFunction; 25 class Register; 26 template <typename _FunctionT> class GenericSSAContext; 27 template <typename, bool> class DominatorTreeBase; 28 29 inline auto successors(MachineBasicBlock *BB) { return BB->successors(); } 30 inline auto predecessors(MachineBasicBlock *BB) { return BB->predecessors(); } 31 inline unsigned succ_size(MachineBasicBlock *BB) { return BB->succ_size(); } 32 inline unsigned pred_size(MachineBasicBlock *BB) { return BB->pred_size(); } 33 34 template <> class GenericSSAContext<MachineFunction> { 35 const MachineRegisterInfo *RegInfo = nullptr; 36 MachineFunction *MF; 37 38 public: 39 using BlockT = MachineBasicBlock; 40 using FunctionT = MachineFunction; 41 using InstructionT = MachineInstr; 42 using ValueRefT = Register; 43 using DominatorTreeT = DominatorTreeBase<BlockT, false>; 44 45 static MachineBasicBlock *getEntryBlock(MachineFunction &F); 46 47 void setFunction(MachineFunction &Fn); 48 MachineFunction *getFunction() const { return MF; } 49 50 Printable print(MachineBasicBlock *Block) const; 51 Printable print(MachineInstr *Inst) const; 52 Printable print(Register Value) const; 53 }; 54 55 using MachineSSAContext = GenericSSAContext<MachineFunction>; 56 } // namespace llvm 57 58 #endif // LLVM_CODEGEN_MACHINESSACONTEXT_H 59