1 //===- MachineCycleAnalysis.h - Cycle Info for Machine IR -------*- 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 // This file defines the MachineCycleInfo class, which is a thin wrapper over 10 // the Machine IR instance of GenericCycleInfo. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_CODEGEN_MACHINECYCLEANALYSIS_H 15 #define LLVM_CODEGEN_MACHINECYCLEANALYSIS_H 16 17 #include "llvm/ADT/GenericCycleInfo.h" 18 #include "llvm/CodeGen/MachineFunctionPass.h" 19 #include "llvm/CodeGen/MachineSSAContext.h" 20 21 namespace llvm { 22 23 extern template class GenericCycleInfo<MachineSSAContext>; 24 extern template class GenericCycle<MachineSSAContext>; 25 26 using MachineCycleInfo = GenericCycleInfo<MachineSSAContext>; 27 using MachineCycle = MachineCycleInfo::CycleT; 28 29 /// Legacy analysis pass which computes a \ref MachineCycleInfo. 30 class MachineCycleInfoWrapperPass : public MachineFunctionPass { 31 MachineFunction *F = nullptr; 32 MachineCycleInfo CI; 33 34 public: 35 static char ID; 36 37 MachineCycleInfoWrapperPass(); 38 39 MachineCycleInfo &getCycleInfo() { return CI; } 40 const MachineCycleInfo &getCycleInfo() const { return CI; } 41 42 bool runOnMachineFunction(MachineFunction &F) override; 43 void getAnalysisUsage(AnalysisUsage &AU) const override; 44 void releaseMemory() override; 45 void print(raw_ostream &OS, const Module *M = nullptr) const override; 46 }; 47 48 // TODO: add this function to GenericCycle template after implementing IR 49 // version. 50 bool isCycleInvariant(const MachineCycle *Cycle, MachineInstr &I); 51 52 } // end namespace llvm 53 54 #endif // LLVM_CODEGEN_MACHINECYCLEANALYSIS_H 55