| 1 | //===-- AVRTargetMachine.h - Define TargetMachine for AVR -------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file declares the AVR specific subclass of TargetMachine. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #ifndef LLVM_AVR_TARGET_MACHINE_H |
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| 14 | #define LLVM_AVR_TARGET_MACHINE_H |
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| 15 | |
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| 16 | #include "llvm/IR/DataLayout.h" |
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| 17 | #include "llvm/Target/TargetMachine.h" |
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| 18 | |
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| 19 | #include "AVRFrameLowering.h" |
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| 20 | #include "AVRISelLowering.h" |
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| 21 | #include "AVRInstrInfo.h" |
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| 22 | #include "AVRSelectionDAGInfo.h" |
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| 23 | #include "AVRSubtarget.h" |
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| 24 | |
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| 25 | #include <optional> |
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| 26 | |
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| 27 | namespace llvm { |
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| 28 | |
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| 29 | /// A generic AVR implementation. |
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| 30 | class AVRTargetMachine : public LLVMTargetMachine { |
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| 31 | public: |
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| 32 | AVRTargetMachine(const Target &T, const Triple &TT, StringRef CPU, |
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| 33 | StringRef FS, const TargetOptions &Options, |
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| 34 | std::optional<Reloc::Model> RM, |
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| 35 | std::optional<CodeModel::Model> CM, CodeGenOptLevel OL, |
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| 36 | bool JIT); |
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| 37 | |
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| 38 | const AVRSubtarget *getSubtargetImpl() const; |
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| 39 | const AVRSubtarget *getSubtargetImpl(const Function &) const override; |
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| 40 | |
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| 41 | TargetLoweringObjectFile *getObjFileLowering() const override { |
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| 42 | return this->TLOF.get(); |
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| 43 | } |
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| 44 | |
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| 45 | TargetPassConfig *createPassConfig(PassManagerBase &PM) override; |
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| 46 | |
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| 47 | MachineFunctionInfo * |
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| 48 | createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, |
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| 49 | const TargetSubtargetInfo *STI) const override; |
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| 50 | |
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| 51 | bool isNoopAddrSpaceCast(unsigned SrcAs, unsigned DestAs) const override { |
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| 52 | // While AVR has different address spaces, they are all represented by |
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| 53 | // 16-bit pointers that can be freely casted between (of course, a pointer |
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| 54 | // must be cast back to its original address space to be dereferenceable). |
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| 55 | // To be safe, also check the pointer size in case we implement __memx |
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| 56 | // pointers. |
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| 57 | return getPointerSize(SrcAs) == getPointerSize(DestAs); |
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| 58 | } |
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| 59 | |
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| 60 | private: |
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| 61 | std::unique_ptr<TargetLoweringObjectFile> TLOF; |
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| 62 | AVRSubtarget SubTarget; |
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| 63 | }; |
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| 64 | |
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| 65 | } // end namespace llvm |
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| 66 | |
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| 67 | #endif // LLVM_AVR_TARGET_MACHINE_H |
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| 68 | |
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