cbgSubtarget.h

//=====-- cbgSubtarget.h - Define Subtarget for the CBG ----*- C++ -*-====//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the CBG specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//

#ifndef CBG_SUBTARGET_H
#define CBG_SUBTARGET_H

#include "llvm/Target/TargetSubtarget.h"
#include <string>

namespace llvm {

class cbgSubtarget : public TargetSubtarget {
  bool HasSelCC;        // target supports selCC instructions
  bool HasMovCC;        // target supports movCC instructions
  bool HasPredBlocksCC; // target supports predicated blocks with condition codes
  bool HasPredBlocksReg;// target supports predicated blocks
                        // with own predicate register
  bool HasPredInstrCC;  // target supports fully predicated instructions with
                        // condition codes
  bool HasPredInstrReg; // target supports fully predicated instructions with
                        // own predicate register
  bool HasHWLoop;       // target provides hardware support for single loop
  bool HasHWLoops;      // target provides hardware support for nested loops
  bool HasVLIWIfElse;   // target provides hardware support for concurrent
                        // execution of if and else branch
  bool HasHWLoopOpt;    // compiler does not optimize hardware loop assembler code
  
public:
  cbgSubtarget(const std::string &TT, const std::string &FS);

  bool hasSelCC() const { return HasSelCC; }
  bool hasMovCC() const { return HasMovCC; }
  bool hasPredBlocksCC() const { return HasPredBlocksCC; }
  bool hasPredBlocksReg() const { return HasPredBlocksReg; }
  bool hasPredInstrCC() const { return HasPredInstrCC; }
  bool hasPredInstrReg() const { return HasPredInstrReg; }
  bool hasHWLoop() const { return HasHWLoop; }
  bool hasHWLoops() const { return HasHWLoops; }
  bool hasHWLoopOpt() const {return HasHWLoopOpt; }
  bool hasVLIWIfElse() const { return HasVLIWIfElse; }
  
  /// ParseSubtargetFeatures - Parses features string setting specified 
  /// subtarget options.  Definition of function is auto generated by tblgen.
  std::string ParseSubtargetFeatures(const std::string &FS,
                                     const std::string &CPU);
  
  std::string getDataLayout() const {
    const char *p;
    p = "E-p:32:32:32-i64:64:64-f64:64:64-f128:64:64-n32";
    return std::string(p);
  }
};

} // end namespace llvm

#endif