LLVM  17.0.0git
AVRTargetMachine.h
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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"
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.
31 public:
32  AVRTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
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 
42  return this->TLOF.get();
43  }
44 
46 
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
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::TargetMachine::STI
std::unique_ptr< const MCSubtargetInfo > STI
Definition: TargetMachine.h:109
llvm::TargetOptions
Definition: TargetOptions.h:124
llvm::Function
Definition: Function.h:59
llvm::AVRTargetMachine::createMachineFunctionInfo
MachineFunctionInfo * createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, const TargetSubtargetInfo *STI) const override
Create the target's instance of MachineFunctionInfo.
Definition: AVRTargetMachine.cpp:110
llvm::AVRTargetMachine
A generic AVR implementation.
Definition: AVRTargetMachine.h:30
llvm::Target
Target - Wrapper for Target specific information.
Definition: TargetRegistry.h:149
llvm::Triple
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
llvm::X86AS::FS
@ FS
Definition: X86.h:201
llvm::TargetMachine::RM
Reloc::Model RM
Definition: TargetMachine.h:101
T
#define T
Definition: Mips16ISelLowering.cpp:341
F
#define F(x, y, z)
Definition: MD5.cpp:55
llvm::AVRTargetMachine::createPassConfig
TargetPassConfig * createPassConfig(PassManagerBase &PM) override
Create a pass configuration object to be used by addPassToEmitX methods for generating a pipeline of ...
Definition: AVRTargetMachine.cpp:79
llvm::TargetLoweringObjectFile
Definition: TargetLoweringObjectFile.h:45
TargetMachine.h
llvm::AVRSubtarget
A specific AVR target MCU.
Definition: AVRSubtarget.h:32
llvm::TargetPassConfig
Target-Independent Code Generator Pass Configuration Options.
Definition: TargetPassConfig.h:84
llvm::EngineKind::JIT
@ JIT
Definition: ExecutionEngine.h:524
llvm::BumpPtrAllocatorImpl
Allocate memory in an ever growing pool, as if by bump-pointer.
Definition: Allocator.h:63
AVRFrameLowering.h
llvm::TargetMachine::Options
TargetOptions Options
Definition: TargetMachine.h:119
llvm::AVRTargetMachine::isNoopAddrSpaceCast
bool isNoopAddrSpaceCast(unsigned SrcAs, unsigned DestAs) const override
Returns true if a cast between SrcAS and DestAS is a noop.
Definition: AVRTargetMachine.h:51
llvm::AVRTargetMachine::getObjFileLowering
TargetLoweringObjectFile * getObjFileLowering() const override
Definition: AVRTargetMachine.h:41
DataLayout.h
AVRSubtarget.h
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
llvm::AVRTargetMachine::AVRTargetMachine
AVRTargetMachine(const Target &T, const Triple &TT, StringRef CPU, StringRef FS, const TargetOptions &Options, std::optional< Reloc::Model > RM, std::optional< CodeModel::Model > CM, CodeGenOpt::Level OL, bool JIT)
Definition: AVRTargetMachine.cpp:47
llvm::TargetSubtargetInfo
TargetSubtargetInfo - Generic base class for all target subtargets.
Definition: TargetSubtargetInfo.h:62
AVRSelectionDAGInfo.h
llvm::LLVMTargetMachine
This class describes a target machine that is implemented with the LLVM target-independent code gener...
Definition: TargetMachine.h:417
Allocator
Basic Register Allocator
Definition: RegAllocBasic.cpp:143
llvm::legacy::PassManagerBase
PassManagerBase - An abstract interface to allow code to add passes to a pass manager without having ...
Definition: LegacyPassManager.h:39
AVRInstrInfo.h
llvm::CodeGenOpt::Level
Level
Code generation optimization level.
Definition: CodeGen.h:57
llvm::AVRTargetMachine::getSubtargetImpl
const AVRSubtarget * getSubtargetImpl() const
Definition: AVRTargetMachine.cpp:102
llvm::TargetMachine::getPointerSize
unsigned getPointerSize(unsigned AS) const
Get the pointer size for this target.
Definition: TargetMachine.h:191
llvm::MachineFunctionInfo
MachineFunctionInfo - This class can be derived from and used by targets to hold private target-speci...
Definition: MachineFunction.h:95
AVRISelLowering.h