llvm-6502/lib/Target/Hexagon/HexagonSubtarget.h
Tony Linthicum b4b54153ad Hexagon backend support
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146412 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12 21:14:40 +00:00

75 lines
2.2 KiB
C++

//==-- HexagonSubtarget.h - Define Subtarget for the Hexagon ----*- 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 Hexagon specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//
#ifndef Hexagon_SUBTARGET_H
#define Hexagon_SUBTARGET_H
#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Target/TargetMachine.h"
#include <string>
#define GET_SUBTARGETINFO_HEADER
#include "HexagonGenSubtargetInfo.inc"
#define Hexagon_SMALL_DATA_THRESHOLD 8
namespace llvm {
class HexagonSubtarget : public HexagonGenSubtargetInfo {
bool UseMemOps;
public:
enum HexagonArchEnum {
V1, V2, V3, V4
};
HexagonArchEnum HexagonArchVersion;
std::string CPUString;
InstrItineraryData InstrItins;
public:
HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS);
/// getInstrItins - Return the instruction itineraies based on subtarget
/// selection.
const InstrItineraryData &getInstrItineraryData() const { return InstrItins; }
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
bool hasV2TOps () const { return HexagonArchVersion >= V2; }
bool hasV2TOpsOnly () const { return HexagonArchVersion == V2; }
bool hasV3TOps () const { return HexagonArchVersion >= V3; }
bool hasV3TOpsOnly () const { return HexagonArchVersion == V3; }
bool hasV4TOps () const { return HexagonArchVersion >= V4; }
bool useMemOps () const { return HexagonArchVersion >= V4 && UseMemOps; }
bool isSubtargetV2() const { return HexagonArchVersion == V2;}
const std::string &getCPUString () const { return CPUString; }
// Threshold for small data section
unsigned getSmallDataThreshold() const {
return Hexagon_SMALL_DATA_THRESHOLD;
}
const HexagonArchEnum &getHexagonArchVersion() const {
return HexagonArchVersion;
}
};
} // end namespace llvm
#endif