llvm-6502/lib/Target/SystemZ/SystemZTargetTransformInfo.h

//===-- SystemZTargetTransformInfo.h - SystemZ-specific TTI ---------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETTRANSFORMINFO_H
#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETTRANSFORMINFO_H

#include "SystemZTargetMachine.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/CodeGen/BasicTTIImpl.h"

namespace llvm {

class SystemZTTIImpl : public BasicTTIImplBase<SystemZTTIImpl> {
  typedef BasicTTIImplBase<SystemZTTIImpl> BaseT;
  typedef TargetTransformInfo TTI;
  friend BaseT;

  const SystemZSubtarget *ST;
  const SystemZTargetLowering *TLI;

  const SystemZSubtarget *getST() const { return ST; }
  const SystemZTargetLowering *getTLI() const { return TLI; }

public:
  explicit SystemZTTIImpl(const SystemZTargetMachine *TM, Function &F)
    : BaseT(TM), ST(TM->getSubtargetImpl(F)), TLI(ST->getTargetLowering()) {}

  // Provide value semantics. MSVC requires that we spell all of these out.
  SystemZTTIImpl(const SystemZTTIImpl &Arg)
      : BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {}
  SystemZTTIImpl(SystemZTTIImpl &&Arg)
      : BaseT(std::move(static_cast<BaseT &>(Arg))), ST(std::move(Arg.ST)),
        TLI(std::move(Arg.TLI)) {}
  SystemZTTIImpl &operator=(const SystemZTTIImpl &RHS) {
    BaseT::operator=(static_cast<const BaseT &>(RHS));
    ST = RHS.ST;
    TLI = RHS.TLI;
    return *this;
  }
  SystemZTTIImpl &operator=(SystemZTTIImpl &&RHS) {
    BaseT::operator=(std::move(static_cast<BaseT &>(RHS)));
    ST = std::move(RHS.ST);
    TLI = std::move(RHS.TLI);
    return *this;
  }

  /// \name Scalar TTI Implementations
  /// @{

  unsigned getIntImmCost(const APInt &Imm, Type *Ty);

  unsigned getIntImmCost(unsigned Opcode, unsigned Idx, const APInt &Imm,
                         Type *Ty);
  unsigned getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
                         Type *Ty);

  TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth);

  /// @}

  /// \name Vector TTI Implementations
  /// @{

  unsigned getNumberOfRegisters(bool Vector);
  unsigned getRegisterBitWidth(bool Vector);

  /// @}
};

} // end namespace llvm

#endif