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 76
