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      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 SPARC_SUBTARGET_H
     15 #define SPARC_SUBTARGET_H
     16 
     17 #include "SparcFrameLowering.h"
     18 #include "SparcInstrInfo.h"
     19 #include "SparcISelLowering.h"
     20 #include "SparcJITInfo.h"
     21 #include "SparcSelectionDAGInfo.h"
     22 #include "llvm/IR/DataLayout.h"
     23 #include "llvm/Target/TargetFrameLowering.h"
     24 #include "llvm/Target/TargetSubtargetInfo.h"
     25 #include <string>
     26 
     27 #define GET_SUBTARGETINFO_HEADER
     28 #include "SparcGenSubtargetInfo.inc"
     29 
     30 namespace llvm {
     31 class StringRef;
     32 
     33 class SparcSubtarget : public SparcGenSubtargetInfo {
     34   virtual void anchor();
     35   bool IsV9;
     36   bool V8DeprecatedInsts;
     37   bool IsVIS, IsVIS2, IsVIS3;
     38   bool Is64Bit;
     39   bool HasHardQuad;
     40   bool UsePopc;
     41   const DataLayout DL;       // Calculates type size & alignment
     42   SparcInstrInfo InstrInfo;
     43   SparcTargetLowering TLInfo;
     44   SparcSelectionDAGInfo TSInfo;
     45   SparcFrameLowering FrameLowering;
     46   SparcJITInfo JITInfo;
     47 
     48 public:
     49   SparcSubtarget(const std::string &TT, const std::string &CPU,
     50                  const std::string &FS, TargetMachine &TM, bool is64bit);
     51 
     52   const SparcInstrInfo *getInstrInfo() const { return &InstrInfo; }
     53   const TargetFrameLowering *getFrameLowering() const { return &FrameLowering; }
     54   const SparcRegisterInfo *getRegisterInfo() const {
     55     return &InstrInfo.getRegisterInfo();
     56   }
     57   const SparcTargetLowering *getTargetLowering() const { return &TLInfo; }
     58   const SparcSelectionDAGInfo *getSelectionDAGInfo() const { return &TSInfo; }
     59   SparcJITInfo *getJITInfo() { return &JITInfo; }
     60   const DataLayout *getDataLayout() const { return &DL; }
     61 
     62   bool isV9() const { return IsV9; }
     63   bool isVIS() const { return IsVIS; }
     64   bool isVIS2() const { return IsVIS2; }
     65   bool isVIS3() const { return IsVIS3; }
     66   bool useDeprecatedV8Instructions() const { return V8DeprecatedInsts; }
     67   bool hasHardQuad() const { return HasHardQuad; }
     68   bool usePopc() const { return UsePopc; }
     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 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 };
     89 
     90 } // end namespace llvm
     91 
     92 #endif
     93