src/llvm/lib/Target/SystemZ/SystemZSubtarget.h

   1 //===-- SystemZSubtarget.h - SystemZ subtarget information -----*- C++ -*--===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file declares the SystemZ specific subclass of TargetSubtargetInfo.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H
  15 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H
  16
  17 #include "SystemZFrameLowering.h"
  18 #include "SystemZISelLowering.h"
  19 #include "SystemZInstrInfo.h"
  20 #include "SystemZRegisterInfo.h"
  21 #include "SystemZSelectionDAGInfo.h"
  22 #include "llvm/IR/DataLayout.h"
  23 #include "llvm/ADT/Triple.h"
  24 #include "llvm/Target/TargetSubtargetInfo.h"
  25 #include <string>
  26
  27 #define GET_SUBTARGETINFO_HEADER
  28 #include "SystemZGenSubtargetInfo.inc"
  29
  30 namespace llvm {
  31 class GlobalValue;
  32 class StringRef;
  33
  34 class SystemZSubtarget : public SystemZGenSubtargetInfo {
  35   virtual void anchor();
  36 protected:
  37   bool HasDistinctOps;
  38   bool HasLoadStoreOnCond;
  39   bool HasHighWord;
  40   bool HasFPExtension;
  41   bool HasFastSerialization;
  42   bool HasInterlockedAccess1;
  43
  44 private:
  45   Triple TargetTriple;
  46   const DataLayout DL;
  47   SystemZInstrInfo InstrInfo;
  48   SystemZTargetLowering TLInfo;
  49   SystemZSelectionDAGInfo TSInfo;
  50   SystemZFrameLowering FrameLowering;
  51
  52   SystemZSubtarget &initializeSubtargetDependencies(StringRef CPU,
  53                                                     StringRef FS);
  54 public:
  55   SystemZSubtarget(const std::string &TT, const std::string &CPU,
  56                    const std::string &FS, const TargetMachine &TM);
  57
  58   const TargetFrameLowering *getFrameLowering() const override {
  59     return &FrameLowering;
  60   }
  61   const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; }
  62   const DataLayout *getDataLayout() const override { return &DL; }
  63   const SystemZRegisterInfo *getRegisterInfo() const override {
  64     return &InstrInfo.getRegisterInfo();
  65   }
  66   const SystemZTargetLowering *getTargetLowering() const override {
  67     return &TLInfo;
  68   }
  69   const TargetSelectionDAGInfo *getSelectionDAGInfo() const override {
  70     return &TSInfo;
  71   }
  72
  73   // This is important for reducing register pressure in vector code.
  74   bool useAA() const override { return true; }
  75
  76   // Automatically generated by tblgen.
  77   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
  78
  79   // Return true if the target has the distinct-operands facility.
  80   bool hasDistinctOps() const { return HasDistinctOps; }
  81
  82   // Return true if the target has the load/store-on-condition facility.
  83   bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
  84
  85   // Return true if the target has the high-word facility.
  86   bool hasHighWord() const { return HasHighWord; }
  87
  88   // Return true if the target has the floating-point extension facility.
  89   bool hasFPExtension() const { return HasFPExtension; }
  90
  91   // Return true if the target has the fast-serialization facility.
  92   bool hasFastSerialization() const { return HasFastSerialization; }
  93
  94   // Return true if the target has interlocked-access facility 1.
  95   bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
  96
  97   // Return true if GV can be accessed using LARL for reloc model RM
  98   // and code model CM.
  99   bool isPC32DBLSymbol(const GlobalValue *GV, Reloc::Model RM,
 100                        CodeModel::Model CM) const;
 101
 102   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
 103 };
 104 } // end namespace llvm
 105
 106 #endif