1 //===-- SparcSubtarget.h - Define Subtarget for the SPARC -------*- 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 SPARC specific subclass of TargetSubtargetInfo.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
14 #define LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
15 
16 #include "SparcFrameLowering.h"
17 #include "SparcISelLowering.h"
18 #include "SparcInstrInfo.h"
19 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
20 #include "llvm/CodeGen/TargetSubtargetInfo.h"
21 #include "llvm/IR/DataLayout.h"
22 #include "llvm/TargetParser/Triple.h"
23 #include <string>
24 
25 #define GET_SUBTARGETINFO_HEADER
26 #include "SparcGenSubtargetInfo.inc"
27 
28 namespace llvm {
29 class StringRef;
30 
31 class SparcSubtarget : public SparcGenSubtargetInfo {
32   Triple TargetTriple;
33   virtual void anchor();
34 
35   bool Is64Bit;
36 
37 #define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER)                    \
38   bool ATTRIBUTE = DEFAULT;
39 #include "SparcGenSubtargetInfo.inc"
40 
41   SparcInstrInfo InstrInfo;
42   SparcTargetLowering TLInfo;
43   SelectionDAGTargetInfo TSInfo;
44   SparcFrameLowering FrameLowering;
45 
46 public:
47   SparcSubtarget(const Triple &TT, const std::string &CPU,
48                  const std::string &FS, const TargetMachine &TM, bool is64bit);
49 
50   const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; }
51   const TargetFrameLowering *getFrameLowering() const override {
52     return &FrameLowering;
53   }
54   const SparcRegisterInfo *getRegisterInfo() const override {
55     return &InstrInfo.getRegisterInfo();
56   }
57   const SparcTargetLowering *getTargetLowering() const override {
58     return &TLInfo;
59   }
60   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
61     return &TSInfo;
62   }
63 
64   bool enableMachineScheduler() const override;
65 
66 #define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER)                    \
67   bool GETTER() const { return ATTRIBUTE; }
68 #include "SparcGenSubtargetInfo.inc"
69 
70   /// ParseSubtargetFeatures - Parses features string setting specified
71   /// subtarget options.  Definition of function is auto generated by tblgen.
72   void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
73   SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
74 
75   bool is64Bit() const { return Is64Bit; }
76 
77   /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
78   /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
79   int64_t getStackPointerBias() const {
80     return is64Bit() ? 2047 : 0;
81   }
82 
83   /// Given a actual stack size as determined by FrameInfo, this function
84   /// returns adjusted framesize which includes space for register window
85   /// spills and arguments.
86   int getAdjustedFrameSize(int stackSize) const;
87 
88   bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
89 };
90 
91 } // end namespace llvm
92 
93 #endif
94