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