1 //===-- MSP430Subtarget.h - Define Subtarget for the MSP430 ----*- 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 MSP430 specific subclass of TargetSubtargetInfo.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_MSP430_MSP430SUBTARGET_H
14 #define LLVM_LIB_TARGET_MSP430_MSP430SUBTARGET_H
15 
16 #include "MSP430FrameLowering.h"
17 #include "MSP430ISelLowering.h"
18 #include "MSP430InstrInfo.h"
19 #include "MSP430RegisterInfo.h"
20 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
21 #include "llvm/CodeGen/TargetSubtargetInfo.h"
22 #include "llvm/IR/DataLayout.h"
23 #include <string>
24 
25 #define GET_SUBTARGETINFO_HEADER
26 #include "MSP430GenSubtargetInfo.inc"
27 
28 namespace llvm {
29 class StringRef;
30 
31 class MSP430Subtarget : public MSP430GenSubtargetInfo {
32 public:
33   enum HWMultEnum {
34     NoHWMult, HWMult16, HWMult32, HWMultF5
35   };
36 
37 private:
38   virtual void anchor();
39   bool ExtendedInsts = false;
40   HWMultEnum HWMultMode = NoHWMult;
41   MSP430InstrInfo InstrInfo;
42   MSP430TargetLowering TLInfo;
43   SelectionDAGTargetInfo TSInfo;
44   MSP430FrameLowering FrameLowering;
45 
46 public:
47   /// This constructor initializes the data members to match that
48   /// of the specified triple.
49   ///
50   MSP430Subtarget(const Triple &TT, const std::string &CPU,
51                   const std::string &FS, const TargetMachine &TM);
52 
53   MSP430Subtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
54 
55   /// ParseSubtargetFeatures - Parses features string setting specified
56   /// subtarget options.  Definition of function is auto generated by tblgen.
57   void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
58 
59   bool hasHWMult16() const { return HWMultMode == HWMult16; }
60   bool hasHWMult32() const { return HWMultMode == HWMult32; }
61   bool hasHWMultF5() const { return HWMultMode == HWMultF5; }
62 
63   const TargetFrameLowering *getFrameLowering() const override {
64     return &FrameLowering;
65   }
66   const MSP430InstrInfo *getInstrInfo() const override { return &InstrInfo; }
67   const MSP430RegisterInfo *getRegisterInfo() const override {
68     return &getInstrInfo()->getRegisterInfo();
69   }
70 
71   const MSP430TargetLowering *getTargetLowering() const override {
72     return &TLInfo;
73   }
74   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
75     return &TSInfo;
76   }
77 };
78 } // End llvm namespace
79 
80 #endif  // LLVM_TARGET_MSP430_SUBTARGET_H
81