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/ADT/Triple.h"
  23 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  24 #include "llvm/IR/DataLayout.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 HasPopulationCount;
  42   bool HasMessageSecurityAssist3;
  43   bool HasMessageSecurityAssist4;
  44   bool HasResetReferenceBitsMultiple;
  45   bool HasFastSerialization;
  46   bool HasInterlockedAccess1;
  47   bool HasMiscellaneousExtensions;
  48   bool HasExecutionHint;
  49   bool HasLoadAndTrap;
  50   bool HasTransactionalExecution;
  51   bool HasProcessorAssist;
  52   bool HasDFPZonedConversion;
  53   bool HasEnhancedDAT2;
  54   bool HasVector;
  55   bool HasLoadStoreOnCond2;
  56   bool HasLoadAndZeroRightmostByte;
  57   bool HasMessageSecurityAssist5;
  58   bool HasDFPPackedConversion;
  59   bool HasMiscellaneousExtensions2;
  60   bool HasGuardedStorage;
  61   bool HasMessageSecurityAssist7;
  62   bool HasMessageSecurityAssist8;
  63   bool HasVectorEnhancements1;
  64   bool HasVectorPackedDecimal;
  65   bool HasInsertReferenceBitsMultiple;
  66
  67 private:
  68   Triple TargetTriple;
  69   SystemZInstrInfo InstrInfo;
  70   SystemZTargetLowering TLInfo;
  71   SystemZSelectionDAGInfo TSInfo;
  72   SystemZFrameLowering FrameLowering;
  73
  74   SystemZSubtarget &initializeSubtargetDependencies(StringRef CPU,
  75                                                     StringRef FS);
  76 public:
  77   SystemZSubtarget(const Triple &TT, const std::string &CPU,
  78                    const std::string &FS, const TargetMachine &TM);
  79
  80   const TargetFrameLowering *getFrameLowering() const override {
  81     return &FrameLowering;
  82   }
  83   const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; }
  84   const SystemZRegisterInfo *getRegisterInfo() const override {
  85     return &InstrInfo.getRegisterInfo();
  86   }
  87   const SystemZTargetLowering *getTargetLowering() const override {
  88     return &TLInfo;
  89   }
  90   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
  91     return &TSInfo;
  92   }
  93
  94   // True if the subtarget should run MachineScheduler after aggressive
  95   // coalescing. This currently replaces the SelectionDAG scheduler with the
  96   // "source" order scheduler.
  97   bool enableMachineScheduler() const override { return true; }
  98
  99   // This is important for reducing register pressure in vector code.
 100   bool useAA() const override { return true; }
 101
 102   // Always enable the early if-conversion pass.
 103   bool enableEarlyIfConversion() const override { return true; }
 104
 105   // Enable tracking of subregister liveness in register allocator.
 106   bool enableSubRegLiveness() const override;
 107
 108   // Automatically generated by tblgen.
 109   void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
 110
 111   // Return true if the target has the distinct-operands facility.
 112   bool hasDistinctOps() const { return HasDistinctOps; }
 113
 114   // Return true if the target has the load/store-on-condition facility.
 115   bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
 116
 117   // Return true if the target has the load/store-on-condition facility 2.
 118   bool hasLoadStoreOnCond2() const { return HasLoadStoreOnCond2; }
 119
 120   // Return true if the target has the high-word facility.
 121   bool hasHighWord() const { return HasHighWord; }
 122
 123   // Return true if the target has the floating-point extension facility.
 124   bool hasFPExtension() const { return HasFPExtension; }
 125
 126   // Return true if the target has the population-count facility.
 127   bool hasPopulationCount() const { return HasPopulationCount; }
 128
 129   // Return true if the target has the message-security-assist
 130   // extension facility 3.
 131   bool hasMessageSecurityAssist3() const { return HasMessageSecurityAssist3; }
 132
 133   // Return true if the target has the message-security-assist
 134   // extension facility 4.
 135   bool hasMessageSecurityAssist4() const { return HasMessageSecurityAssist4; }
 136
 137   // Return true if the target has the reset-reference-bits-multiple facility.
 138   bool hasResetReferenceBitsMultiple() const {
 139     return HasResetReferenceBitsMultiple;
 140   }
 141
 142   // Return true if the target has the fast-serialization facility.
 143   bool hasFastSerialization() const { return HasFastSerialization; }
 144
 145   // Return true if the target has interlocked-access facility 1.
 146   bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
 147
 148   // Return true if the target has the miscellaneous-extensions facility.
 149   bool hasMiscellaneousExtensions() const {
 150     return HasMiscellaneousExtensions;
 151   }
 152
 153   // Return true if the target has the execution-hint facility.
 154   bool hasExecutionHint() const { return HasExecutionHint; }
 155
 156   // Return true if the target has the load-and-trap facility.
 157   bool hasLoadAndTrap() const { return HasLoadAndTrap; }
 158
 159   // Return true if the target has the transactional-execution facility.
 160   bool hasTransactionalExecution() const { return HasTransactionalExecution; }
 161
 162   // Return true if the target has the processor-assist facility.
 163   bool hasProcessorAssist() const { return HasProcessorAssist; }
 164
 165   // Return true if the target has the DFP zoned-conversion facility.
 166   bool hasDFPZonedConversion() const { return HasDFPZonedConversion; }
 167
 168   // Return true if the target has the enhanced-DAT facility 2.
 169   bool hasEnhancedDAT2() const { return HasEnhancedDAT2; }
 170
 171   // Return true if the target has the load-and-zero-rightmost-byte facility.
 172   bool hasLoadAndZeroRightmostByte() const {
 173     return HasLoadAndZeroRightmostByte;
 174   }
 175
 176   // Return true if the target has the message-security-assist
 177   // extension facility 5.
 178   bool hasMessageSecurityAssist5() const { return HasMessageSecurityAssist5; }
 179
 180   // Return true if the target has the DFP packed-conversion facility.
 181   bool hasDFPPackedConversion() const { return HasDFPPackedConversion; }
 182
 183   // Return true if the target has the vector facility.
 184   bool hasVector() const { return HasVector; }
 185
 186   // Return true if the target has the miscellaneous-extensions facility 2.
 187   bool hasMiscellaneousExtensions2() const {
 188     return HasMiscellaneousExtensions2;
 189   }
 190
 191   // Return true if the target has the guarded-storage facility.
 192   bool hasGuardedStorage() const { return HasGuardedStorage; }
 193
 194   // Return true if the target has the message-security-assist
 195   // extension facility 7.
 196   bool hasMessageSecurityAssist7() const { return HasMessageSecurityAssist7; }
 197
 198   // Return true if the target has the message-security-assist
 199   // extension facility 8.
 200   bool hasMessageSecurityAssist8() const { return HasMessageSecurityAssist8; }
 201
 202   // Return true if the target has the vector-enhancements facility 1.
 203   bool hasVectorEnhancements1() const { return HasVectorEnhancements1; }
 204
 205   // Return true if the target has the vector-packed-decimal facility.
 206   bool hasVectorPackedDecimal() const { return HasVectorPackedDecimal; }
 207
 208   // Return true if the target has the insert-reference-bits-multiple facility.
 209   bool hasInsertReferenceBitsMultiple() const {
 210     return HasInsertReferenceBitsMultiple;
 211   }
 212
 213   // Return true if GV can be accessed using LARL for reloc model RM
 214   // and code model CM.
 215   bool isPC32DBLSymbol(const GlobalValue *GV, CodeModel::Model CM) const;
 216
 217   bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
 218 };
 219 } // end namespace llvm
 220
 221 #endif