10b57cec5SDimitry Andric //===-- AVR.h - Top-level interface for AVR representation ------*- C++ -*-===// 20b57cec5SDimitry Andric // 30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 60b57cec5SDimitry Andric // 70b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 80b57cec5SDimitry Andric // 90b57cec5SDimitry Andric // This file contains the entry points for global functions defined in the LLVM 100b57cec5SDimitry Andric // AVR back-end. 110b57cec5SDimitry Andric // 120b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 130b57cec5SDimitry Andric 140b57cec5SDimitry Andric #ifndef LLVM_AVR_H 150b57cec5SDimitry Andric #define LLVM_AVR_H 160b57cec5SDimitry Andric 170b57cec5SDimitry Andric #include "llvm/CodeGen/SelectionDAGNodes.h" 18*81ad6265SDimitry Andric #include "llvm/Pass.h" 19*81ad6265SDimitry Andric #include "llvm/PassRegistry.h" 200b57cec5SDimitry Andric #include "llvm/Target/TargetMachine.h" 210b57cec5SDimitry Andric 220b57cec5SDimitry Andric namespace llvm { 230b57cec5SDimitry Andric 240b57cec5SDimitry Andric class AVRTargetMachine; 250b57cec5SDimitry Andric class FunctionPass; 260b57cec5SDimitry Andric 27fe6060f1SDimitry Andric Pass *createAVRShiftExpandPass(); 280b57cec5SDimitry Andric FunctionPass *createAVRISelDag(AVRTargetMachine &TM, 290b57cec5SDimitry Andric CodeGenOpt::Level OptLevel); 300b57cec5SDimitry Andric FunctionPass *createAVRExpandPseudoPass(); 310b57cec5SDimitry Andric FunctionPass *createAVRFrameAnalyzerPass(); 320b57cec5SDimitry Andric FunctionPass *createAVRBranchSelectionPass(); 330b57cec5SDimitry Andric 34fe6060f1SDimitry Andric void initializeAVRShiftExpandPass(PassRegistry &); 350b57cec5SDimitry Andric void initializeAVRExpandPseudoPass(PassRegistry &); 360b57cec5SDimitry Andric 370b57cec5SDimitry Andric /// Contains the AVR backend. 380b57cec5SDimitry Andric namespace AVR { 390b57cec5SDimitry Andric 400b57cec5SDimitry Andric /// An integer that identifies all of the supported AVR address spaces. 4104eeddc0SDimitry Andric enum AddressSpace { 4204eeddc0SDimitry Andric DataMemory, 4304eeddc0SDimitry Andric ProgramMemory, 4404eeddc0SDimitry Andric ProgramMemory1, 4504eeddc0SDimitry Andric ProgramMemory2, 4604eeddc0SDimitry Andric ProgramMemory3, 4704eeddc0SDimitry Andric ProgramMemory4, 4804eeddc0SDimitry Andric ProgramMemory5, 4904eeddc0SDimitry Andric NumAddrSpaces, 5004eeddc0SDimitry Andric }; 510b57cec5SDimitry Andric 520b57cec5SDimitry Andric /// Checks if a given type is a pointer to program memory. 530b57cec5SDimitry Andric template <typename T> bool isProgramMemoryAddress(T *V) { 5404eeddc0SDimitry Andric auto *PT = cast<PointerType>(V->getType()); 5504eeddc0SDimitry Andric assert(PT != nullptr && "unexpected MemSDNode"); 5604eeddc0SDimitry Andric return PT->getAddressSpace() == ProgramMemory || 5704eeddc0SDimitry Andric PT->getAddressSpace() == ProgramMemory1 || 5804eeddc0SDimitry Andric PT->getAddressSpace() == ProgramMemory2 || 5904eeddc0SDimitry Andric PT->getAddressSpace() == ProgramMemory3 || 6004eeddc0SDimitry Andric PT->getAddressSpace() == ProgramMemory4 || 6104eeddc0SDimitry Andric PT->getAddressSpace() == ProgramMemory5; 6204eeddc0SDimitry Andric } 6304eeddc0SDimitry Andric 6404eeddc0SDimitry Andric template <typename T> AddressSpace getAddressSpace(T *V) { 6504eeddc0SDimitry Andric auto *PT = cast<PointerType>(V->getType()); 6604eeddc0SDimitry Andric assert(PT != nullptr && "unexpected MemSDNode"); 6704eeddc0SDimitry Andric unsigned AS = PT->getAddressSpace(); 6804eeddc0SDimitry Andric if (AS < NumAddrSpaces) 6904eeddc0SDimitry Andric return static_cast<AddressSpace>(AS); 7004eeddc0SDimitry Andric return NumAddrSpaces; 710b57cec5SDimitry Andric } 720b57cec5SDimitry Andric 730b57cec5SDimitry Andric inline bool isProgramMemoryAccess(MemSDNode const *N) { 7404eeddc0SDimitry Andric auto *V = N->getMemOperand()->getValue(); 7504eeddc0SDimitry Andric if (V != nullptr && isProgramMemoryAddress(V)) 7604eeddc0SDimitry Andric return true; 7704eeddc0SDimitry Andric return false; 7804eeddc0SDimitry Andric } 790b57cec5SDimitry Andric 8004eeddc0SDimitry Andric // Get the index of the program memory bank. 8104eeddc0SDimitry Andric // -1: not program memory 8204eeddc0SDimitry Andric // 0: ordinary program memory 8304eeddc0SDimitry Andric // 1~5: extended program memory 8404eeddc0SDimitry Andric inline int getProgramMemoryBank(MemSDNode const *N) { 8504eeddc0SDimitry Andric auto *V = N->getMemOperand()->getValue(); 8604eeddc0SDimitry Andric if (V == nullptr || !isProgramMemoryAddress(V)) 8704eeddc0SDimitry Andric return -1; 8804eeddc0SDimitry Andric AddressSpace AS = getAddressSpace(V); 8904eeddc0SDimitry Andric assert(ProgramMemory <= AS && AS <= ProgramMemory5); 9004eeddc0SDimitry Andric return static_cast<int>(AS - ProgramMemory); 910b57cec5SDimitry Andric } 920b57cec5SDimitry Andric 930b57cec5SDimitry Andric } // end of namespace AVR 940b57cec5SDimitry Andric 950b57cec5SDimitry Andric } // end namespace llvm 960b57cec5SDimitry Andric 970b57cec5SDimitry Andric #endif // LLVM_AVR_H 98