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/ADT/Triple.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 "SparcGenSubtargetInfo.inc"
27 
28 namespace llvm {
29 class StringRef;
30 
31 class SparcSubtarget : public SparcGenSubtargetInfo {
32   Triple TargetTriple;
33   virtual void anchor();
34   bool UseSoftMulDiv;
35   bool IsV9;
36   bool IsLeon;
37   bool V8DeprecatedInsts;
38   bool IsVIS, IsVIS2, IsVIS3;
39   bool Is64Bit;
40   bool HasHardQuad;
41   bool UsePopc;
42   bool UseSoftFloat;
43   bool HasNoFSMULD;
44   bool HasNoFMULS;
45 
46   // LEON features
47   bool HasUmacSmac;
48   bool HasLeonCasa;
49   bool HasPWRPSR;
50   bool InsertNOPLoad;
51   bool FixAllFDIVSQRT;
52   bool DetectRoundChange;
53   bool HasLeonCycleCounter;
54 
55   SparcInstrInfo InstrInfo;
56   SparcTargetLowering TLInfo;
57   SelectionDAGTargetInfo TSInfo;
58   SparcFrameLowering FrameLowering;
59 
60 public:
61   SparcSubtarget(const Triple &TT, const std::string &CPU,
62                  const std::string &FS, const TargetMachine &TM, bool is64bit);
63 
64   const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; }
65   const TargetFrameLowering *getFrameLowering() const override {
66     return &FrameLowering;
67   }
68   const SparcRegisterInfo *getRegisterInfo() const override {
69     return &InstrInfo.getRegisterInfo();
70   }
71   const SparcTargetLowering *getTargetLowering() const override {
72     return &TLInfo;
usage(void)73   }
74   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
75     return &TSInfo;
76   }
77 
78   bool enableMachineScheduler() const override;
79 
80   bool useSoftMulDiv() const { return UseSoftMulDiv; }
81   bool isV9() const { return IsV9; }
82   bool isLeon() const { return IsLeon; }
83   bool isVIS() const { return IsVIS; }
84   bool isVIS2() const { return IsVIS2; }
85   bool isVIS3() const { return IsVIS3; }
86   bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
87   bool hasHardQuad() const { return HasHardQuad; }
88   bool usePopc() const { return UsePopc; }
89   bool useSoftFloat() const { return UseSoftFloat; }
90   bool hasNoFSMULD() const { return HasNoFSMULD; }
91   bool hasNoFMULS() const { return HasNoFMULS; }
92 
93   // Leon options
94   bool hasUmacSmac() const { return HasUmacSmac; }
95   bool hasLeonCasa() const { return HasLeonCasa; }
96   bool hasPWRPSR() const { return HasPWRPSR; }
97   bool insertNOPLoad() const { return InsertNOPLoad; }
98   bool fixAllFDIVSQRT() const { return FixAllFDIVSQRT; }
99   bool detectRoundChange() const { return DetectRoundChange; }
100   bool hasLeonCycleCounter() const { return HasLeonCycleCounter; }
101 
102   /// ParseSubtargetFeatures - Parses features string setting specified
103   /// subtarget options.  Definition of function is auto generated by tblgen.
104   void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
105   SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
106 
107   bool is64Bit() const { return Is64Bit; }
108 
109   /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
110   /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
111   int64_t getStackPointerBias() const {
112     return is64Bit() ? 2047 : 0;
113   }
114 
115   /// Given a actual stack size as determined by FrameInfo, this function
116   /// returns adjusted framesize which includes space for register window
117   /// spills and arguments.
118   int getAdjustedFrameSize(int stackSize) const;
119 
120   bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
121 };
122 
123 } // end namespace llvm
124 
125 #endif
126