1 //===-- SparcSubtarget.h - Define Subtarget for the SPARC -------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file declares the SPARC specific subclass of TargetSubtargetInfo.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
15 #define LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
16 
17 #include "SparcFrameLowering.h"
18 #include "SparcISelLowering.h"
19 #include "SparcInstrInfo.h"
20 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
21 #include "llvm/CodeGen/TargetFrameLowering.h"
22 #include "llvm/CodeGen/TargetSubtargetInfo.h"
23 #include "llvm/IR/DataLayout.h"
24 #include <string>
25 
26 #define GET_SUBTARGETINFO_HEADER
27 #include "SparcGenSubtargetInfo.inc"
28 
29 namespace llvm {
30 class StringRef;
31 
32 class SparcSubtarget : public SparcGenSubtargetInfo {
33   Triple TargetTriple;
34   virtual void anchor();
35   bool UseSoftMulDiv;
36   bool IsV9;
37   bool IsLeon;
38   bool V8DeprecatedInsts;
39   bool IsVIS, IsVIS2, IsVIS3;
40   bool Is64Bit;
41   bool HasHardQuad;
42   bool UsePopc;
43   bool UseSoftFloat;
44   bool HasNoFSMULD;
45   bool HasNoFMULS;
46 
47   // LEON features
48   bool HasUmacSmac;
49   bool HasLeonCasa;
50   bool HasPWRPSR;
51   bool InsertNOPLoad;
52   bool FixAllFDIVSQRT;
53   bool DetectRoundChange;
54   bool HasLeonCycleCounter;
55 
56   SparcInstrInfo InstrInfo;
57   SparcTargetLowering TLInfo;
58   SelectionDAGTargetInfo TSInfo;
59   SparcFrameLowering FrameLowering;
60 
61 public:
62   SparcSubtarget(const Triple &TT, const std::string &CPU,
63                  const std::string &FS, const TargetMachine &TM, bool is64bit);
64 
getInstrInfo()65   const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; }
getFrameLowering()66   const TargetFrameLowering *getFrameLowering() const override {
67     return &FrameLowering;
68   }
getRegisterInfo()69   const SparcRegisterInfo *getRegisterInfo() const override {
70     return &InstrInfo.getRegisterInfo();
71   }
getTargetLowering()72   const SparcTargetLowering *getTargetLowering() const override {
73     return &TLInfo;
74   }
getSelectionDAGInfo()75   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
76     return &TSInfo;
77   }
78 
79   bool enableMachineScheduler() const override;
80 
useSoftMulDiv()81   bool useSoftMulDiv() const { return UseSoftMulDiv; }
isV9()82   bool isV9() const { return IsV9; }
isLeon()83   bool isLeon() const { return IsLeon; }
isVIS()84   bool isVIS() const { return IsVIS; }
isVIS2()85   bool isVIS2() const { return IsVIS2; }
isVIS3()86   bool isVIS3() const { return IsVIS3; }
useDeprecatedV8Instructions()87   bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
hasHardQuad()88   bool hasHardQuad() const { return HasHardQuad; }
usePopc()89   bool usePopc() const { return UsePopc; }
useSoftFloat()90   bool useSoftFloat() const { return UseSoftFloat; }
hasNoFSMULD()91   bool hasNoFSMULD() const { return HasNoFSMULD; }
hasNoFMULS()92   bool hasNoFMULS() const { return HasNoFMULS; }
93 
94   // Leon options
hasUmacSmac()95   bool hasUmacSmac() const { return HasUmacSmac; }
hasLeonCasa()96   bool hasLeonCasa() const { return HasLeonCasa; }
hasPWRPSR()97   bool hasPWRPSR() const { return HasPWRPSR; }
insertNOPLoad()98   bool insertNOPLoad() const { return InsertNOPLoad; }
fixAllFDIVSQRT()99   bool fixAllFDIVSQRT() const { return FixAllFDIVSQRT; }
detectRoundChange()100   bool detectRoundChange() const { return DetectRoundChange; }
hasLeonCycleCounter()101   bool hasLeonCycleCounter() const { return HasLeonCycleCounter; }
102 
103   /// ParseSubtargetFeatures - Parses features string setting specified
104   /// subtarget options.  Definition of function is auto generated by tblgen.
105   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
106   SparcSubtarget &initializeSubtargetDependencies(StringRef CPU, StringRef FS);
107 
is64Bit()108   bool is64Bit() const { return Is64Bit; }
109 
110   /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
111   /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
getStackPointerBias()112   int64_t getStackPointerBias() const {
113     return is64Bit() ? 2047 : 0;
114   }
115 
116   /// Given a actual stack size as determined by FrameInfo, this function
117   /// returns adjusted framesize which includes space for register window
118   /// spills and arguments.
119   int getAdjustedFrameSize(int stackSize) const;
120 
isTargetLinux()121   bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
122 };
123 
124 } // end namespace llvm
125 
126 #endif
127