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/CodeGen/CodeGenTargetMachineImpl.h"
17#include "llvm/IR/DataLayout.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
27namespace llvm {
28
29/// A generic AVR implementation.
30class AVRTargetMachine : public CodeGenTargetMachineImpl {
31public:
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, CodeGenOptLevel 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(AS: SrcAs) == getPointerSize(AS: DestAs);
58 }
59
60private:
61 std::unique_ptr<TargetLoweringObjectFile> TLOF;
62 AVRSubtarget SubTarget;
63};
64
65} // end namespace llvm
66
67#endif // LLVM_AVR_TARGET_MACHINE_H
68