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//===-- 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 LLVM_LIB_TARGET_HEXAGON_HEXAGONSUBTARGET_H
#define LLVM_LIB_TARGET_HEXAGON_HEXAGONSUBTARGET_H
#include "HexagonFrameLowering.h"
#include "HexagonISelLowering.h"
#include "HexagonInstrInfo.h"
#include "HexagonSelectionDAGInfo.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetSubtargetInfo.h"
#include <string>
#define GET_SUBTARGETINFO_HEADER
#include "HexagonGenSubtargetInfo.inc"
#define Hexagon_SMALL_DATA_THRESHOLD 8
#define Hexagon_SLOTS 4
namespace llvm {
class HexagonSubtarget : public HexagonGenSubtargetInfo {
virtual void anchor();
bool UseMemOps;
bool ModeIEEERndNear;
public:
enum HexagonArchEnum {
V4, V5
};
HexagonArchEnum HexagonArchVersion;
private:
std::string CPUString;
HexagonInstrInfo InstrInfo;
HexagonTargetLowering TLInfo;
HexagonSelectionDAGInfo TSInfo;
HexagonFrameLowering FrameLowering;
InstrItineraryData InstrItins;
public:
HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS,
const TargetMachine &TM);
/// getInstrItins - Return the instruction itineraries based on subtarget
/// selection.
const InstrItineraryData *getInstrItineraryData() const override {
return &InstrItins;
}
const HexagonInstrInfo *getInstrInfo() const override { return &InstrInfo; }
const HexagonRegisterInfo *getRegisterInfo() const override {
return &InstrInfo.getRegisterInfo();
}
const HexagonTargetLowering *getTargetLowering() const override {
return &TLInfo;
}
const HexagonFrameLowering *getFrameLowering() const override {
return &FrameLowering;
}
const HexagonSelectionDAGInfo *getSelectionDAGInfo() const override {
return &TSInfo;
}
HexagonSubtarget &initializeSubtargetDependencies(StringRef CPU,
StringRef FS);
/// ParseSubtargetFeatures - Parses features string setting specified
/// subtarget options. Definition of function is auto generated by tblgen.
void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
bool useMemOps() const { return UseMemOps; }
bool hasV5TOps() const { return getHexagonArchVersion() >= V5; }
bool hasV5TOpsOnly() const { return getHexagonArchVersion() == V5; }
bool modeIEEERndNear() const { return ModeIEEERndNear; }
bool enableMachineScheduler() const override;
// Always use the TargetLowering default scheduler.
// FIXME: This will use the vliw scheduler which is probably just hurting
// compiler time and will be removed eventually anyway.
bool enableMachineSchedDefaultSched() const override { return false; }
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
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