llvm/lib/Target/SystemZ/SystemZSelectionDAGInfo.h
Richard Sandiford ac168b8bc8 [SystemZ] Use CLC and IPM to implement memcmp
For now this is restricted to fixed-length comparisons with a length
in the range [1, 256], as for memcpy() and MVC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188163 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-12 10:28:10 +00:00

53 lines
1.8 KiB
C++

//===-- SystemZSelectionDAGInfo.h - SystemZ SelectionDAG Info ---*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the SystemZ subclass for TargetSelectionDAGInfo.
//
//===----------------------------------------------------------------------===//
#ifndef SYSTEMZSELECTIONDAGINFO_H
#define SYSTEMZSELECTIONDAGINFO_H
#include "llvm/Target/TargetSelectionDAGInfo.h"
namespace llvm {
class SystemZTargetMachine;
class SystemZSelectionDAGInfo : public TargetSelectionDAGInfo {
public:
explicit SystemZSelectionDAGInfo(const SystemZTargetMachine &TM);
~SystemZSelectionDAGInfo();
virtual
SDValue EmitTargetCodeForMemcpy(SelectionDAG &DAG, SDLoc DL, SDValue Chain,
SDValue Dst, SDValue Src,
SDValue Size, unsigned Align,
bool IsVolatile, bool AlwaysInline,
MachinePointerInfo DstPtrInfo,
MachinePointerInfo SrcPtrInfo) const
LLVM_OVERRIDE;
virtual SDValue
EmitTargetCodeForMemset(SelectionDAG &DAG, SDLoc DL,
SDValue Chain, SDValue Dst, SDValue Byte,
SDValue Size, unsigned Align, bool IsVolatile,
MachinePointerInfo DstPtrInfo) const LLVM_OVERRIDE;
virtual std::pair<SDValue, SDValue>
EmitTargetCodeForMemcmp(SelectionDAG &DAG, SDLoc DL, SDValue Chain,
SDValue Src1, SDValue Src2, SDValue Size,
MachinePointerInfo Op1PtrInfo,
MachinePointerInfo Op2PtrInfo) const LLVM_OVERRIDE;
};
}
#endif