lib/Target/MBlaze/MBlazeSubtarget.h

   1 //=====-- MBlazeSubtarget.h - Define Subtarget for the MBlaze -*- 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 MBlaze specific subclass of TargetSubtargetInfo.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef MBLAZESUBTARGET_H
  15 #define MBLAZESUBTARGET_H
  16
  17 #include "llvm/Target/TargetSubtargetInfo.h"
  18 #include "llvm/MC/MCInstrItineraries.h"
  19 #include <string>
  20
  21 #define GET_SUBTARGETINFO_HEADER
  22 #include "MBlazeGenSubtargetInfo.inc"
  23
  24 namespace llvm {
  25 class StringRef;
  26
  27 class MBlazeSubtarget : public MBlazeGenSubtargetInfo {
  28
  29 protected:
  30   bool HasBarrel;
  31   bool HasDiv;
  32   bool HasMul;
  33   bool HasPatCmp;
  34   bool HasFPU;
  35   bool HasMul64;
  36   bool HasSqrt;
  37   bool HasItin;
  38
  39   InstrItineraryData InstrItins;
  40
  41 public:
  42
  43   /// This constructor initializes the data members to match that
  44   /// of the specified triple.
  45   MBlazeSubtarget(const std::string &TT, const std::string &CPU,
  46                   const std::string &FS);
  47
  48   /// ParseSubtargetFeatures - Parses features string setting specified
  49   /// subtarget options.  Definition of function is auto generated by tblgen.
  50   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
  51
  52   /// Compute the number of maximum number of issues per cycle for the
  53   /// MBlaze scheduling itineraries.
  54   void computeIssueWidth();
  55
  56   /// enablePostRAScheduler - True at 'More' optimization.
  57   bool enablePostRAScheduler(CodeGenOpt::Level OptLevel,
  58                              TargetSubtargetInfo::AntiDepBreakMode& Mode,
  59                              RegClassVector& CriticalPathRCs) const;
  60
  61   /// getInstrItins - Return the instruction itineraies based on subtarget.
  62   const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
  63
  64   bool hasItin()   const { return HasItin; }
  65   bool hasPCMP()   const { return HasPatCmp; }
  66   bool hasFPU()    const { return HasFPU; }
  67   bool hasSqrt()   const { return HasSqrt; }
  68   bool hasMul()    const { return HasMul; }
  69   bool hasMul64()  const { return HasMul64; }
  70   bool hasDiv()    const { return HasDiv; }
  71   bool hasBarrel() const { return HasBarrel; }
  72 };
  73 } // End llvm namespace
  74
  75 #endif