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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.
getInstrItineraryData()62   const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
63 
hasItin()64   bool hasItin()   const { return HasItin; }
hasPCMP()65   bool hasPCMP()   const { return HasPatCmp; }
hasFPU()66   bool hasFPU()    const { return HasFPU; }
hasSqrt()67   bool hasSqrt()   const { return HasSqrt; }
hasMul()68   bool hasMul()    const { return HasMul; }
hasMul64()69   bool hasMul64()  const { return HasMul64; }
hasDiv()70   bool hasDiv()    const { return HasDiv; }
hasBarrel()71   bool hasBarrel() const { return HasBarrel; }
72 };
73 } // End llvm namespace
74 
75 #endif
76