1 //===-- HexagonSubtarget.h - Define Subtarget for the Hexagon ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares the Hexagon specific subclass of TargetSubtarget.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONSUBTARGET_H
15 #define LLVM_LIB_TARGET_HEXAGON_HEXAGONSUBTARGET_H
17 #include "HexagonFrameLowering.h"
18 #include "HexagonInstrInfo.h"
19 #include "HexagonISelLowering.h"
20 #include "HexagonSelectionDAGInfo.h"
21 #include "llvm/IR/DataLayout.h"
22 #include "llvm/Target/TargetMachine.h"
23 #include "llvm/Target/TargetSubtargetInfo.h"
26 #define GET_SUBTARGETINFO_HEADER
27 #include "HexagonGenSubtargetInfo.inc"
29 #define Hexagon_SMALL_DATA_THRESHOLD 8
30 #define Hexagon_SLOTS 4
34 class HexagonSubtarget : public HexagonGenSubtargetInfo {
35 virtual void anchor();
41 enum HexagonArchEnum {
45 HexagonArchEnum HexagonArchVersion;
47 std::string CPUString;
48 const DataLayout DL; // Calculates type size & alignment.
49 HexagonInstrInfo InstrInfo;
50 HexagonTargetLowering TLInfo;
51 HexagonSelectionDAGInfo TSInfo;
52 HexagonFrameLowering FrameLowering;
53 InstrItineraryData InstrItins;
56 HexagonSubtarget(StringRef TT, StringRef CPU, StringRef FS,
57 const TargetMachine &TM);
59 /// getInstrItins - Return the instruction itineraries based on subtarget
61 const InstrItineraryData *getInstrItineraryData() const {
64 const HexagonInstrInfo *getInstrInfo() const override { return &InstrInfo; }
65 const HexagonRegisterInfo *getRegisterInfo() const {
66 return &InstrInfo.getRegisterInfo();
68 const HexagonTargetLowering *getTargetLowering() const { return &TLInfo; }
69 const HexagonFrameLowering *getFrameLowering() const {
70 return &FrameLowering;
72 const HexagonSelectionDAGInfo *getSelectionDAGInfo() const { return &TSInfo; }
73 const DataLayout *getDataLayout() const { return &DL; }
75 HexagonSubtarget &initializeSubtargetDependencies(StringRef CPU,
78 /// ParseSubtargetFeatures - Parses features string setting specified
79 /// subtarget options. Definition of function is auto generated by tblgen.
80 void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
82 bool hasV2TOps () const { return HexagonArchVersion >= V2; }
83 bool hasV2TOpsOnly () const { return HexagonArchVersion == V2; }
84 bool hasV3TOps () const { return HexagonArchVersion >= V3; }
85 bool hasV3TOpsOnly () const { return HexagonArchVersion == V3; }
86 bool hasV4TOps () const { return HexagonArchVersion >= V4; }
87 bool hasV4TOpsOnly () const { return HexagonArchVersion == V4; }
88 bool useMemOps () const { return HexagonArchVersion >= V4 && UseMemOps; }
89 bool hasV5TOps () const { return HexagonArchVersion >= V5; }
90 bool hasV5TOpsOnly () const { return HexagonArchVersion == V5; }
91 bool modeIEEERndNear () const { return ModeIEEERndNear; }
93 bool isSubtargetV2() const { return HexagonArchVersion == V2;}
94 const std::string &getCPUString () const { return CPUString; }
96 // Threshold for small data section
97 unsigned getSmallDataThreshold() const {
98 return Hexagon_SMALL_DATA_THRESHOLD;
100 const HexagonArchEnum &getHexagonArchVersion() const {
101 return HexagonArchVersion;
105 } // end namespace llvm