1 //===-- AVRTargetMachine.h - Define TargetMachine for AVR -------*- 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 declares the AVR specific subclass of TargetMachine. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_AVR_TARGET_MACHINE_H 14 #define LLVM_AVR_TARGET_MACHINE_H 15 16 #include "llvm/IR/DataLayout.h" 17 #include "llvm/Target/TargetMachine.h" 18 19 #include "AVRFrameLowering.h" 20 #include "AVRISelLowering.h" 21 #include "AVRInstrInfo.h" 22 #include "AVRSelectionDAGInfo.h" 23 #include "AVRSubtarget.h" 24 25 #include <optional> 26 27 namespace llvm { 28 29 /// A generic AVR implementation. 30 class AVRTargetMachine : public LLVMTargetMachine { 31 public: 32 AVRTargetMachine(const Target &T, const Triple &TT, StringRef CPU, 33 StringRef FS, const TargetOptions &Options, 34 std::optional<Reloc::Model> RM, 35 std::optional<CodeModel::Model> CM, CodeGenOpt::Level OL, 36 bool JIT); 37 38 const AVRSubtarget *getSubtargetImpl() const; 39 const AVRSubtarget *getSubtargetImpl(const Function &) const override; 40 41 TargetLoweringObjectFile *getObjFileLowering() const override { 42 return this->TLOF.get(); 43 } 44 45 TargetPassConfig *createPassConfig(PassManagerBase &PM) override; 46 47 MachineFunctionInfo * 48 createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, 49 const TargetSubtargetInfo *STI) const override; 50 51 bool isNoopAddrSpaceCast(unsigned SrcAs, unsigned DestAs) const override { 52 // While AVR has different address spaces, they are all represented by 53 // 16-bit pointers that can be freely casted between (of course, a pointer 54 // must be cast back to its original address space to be dereferenceable). 55 // To be safe, also check the pointer size in case we implement __memx 56 // pointers. 57 return getPointerSize(SrcAs) == getPointerSize(DestAs); 58 } 59 60 private: 61 std::unique_ptr<TargetLoweringObjectFile> TLOF; 62 AVRSubtarget SubTarget; 63 }; 64 65 } // end namespace llvm 66 67 #endif // LLVM_AVR_TARGET_MACHINE_H 68