1 //===-- SystemZSubtarget.h - SystemZ subtarget information -----*- C++ -*--===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file declares the SystemZ specific subclass of TargetSubtargetInfo. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H 14 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H 15 16 #include "SystemZFrameLowering.h" 17 #include "SystemZISelLowering.h" 18 #include "SystemZInstrInfo.h" 19 #include "SystemZRegisterInfo.h" 20 #include "SystemZSelectionDAGInfo.h" 21 #include "llvm/ADT/Triple.h" 22 #include "llvm/CodeGen/TargetSubtargetInfo.h" 23 #include "llvm/IR/DataLayout.h" 24 #include <string> 25 26 #define GET_SUBTARGETINFO_HEADER 27 #include "SystemZGenSubtargetInfo.inc" 28 29 namespace llvm { 30 class GlobalValue; 31 class StringRef; 32 33 class SystemZSubtarget : public SystemZGenSubtargetInfo { 34 virtual void anchor(); 35 protected: 36 bool HasDistinctOps; 37 bool HasLoadStoreOnCond; 38 bool HasHighWord; 39 bool HasFPExtension; 40 bool HasPopulationCount; 41 bool HasMessageSecurityAssist3; 42 bool HasMessageSecurityAssist4; 43 bool HasResetReferenceBitsMultiple; 44 bool HasFastSerialization; 45 bool HasInterlockedAccess1; 46 bool HasMiscellaneousExtensions; 47 bool HasExecutionHint; 48 bool HasLoadAndTrap; 49 bool HasTransactionalExecution; 50 bool HasProcessorAssist; 51 bool HasDFPZonedConversion; 52 bool HasEnhancedDAT2; 53 bool HasVector; 54 bool HasLoadStoreOnCond2; 55 bool HasLoadAndZeroRightmostByte; 56 bool HasMessageSecurityAssist5; 57 bool HasDFPPackedConversion; 58 bool HasMiscellaneousExtensions2; 59 bool HasGuardedStorage; 60 bool HasMessageSecurityAssist7; 61 bool HasMessageSecurityAssist8; 62 bool HasVectorEnhancements1; 63 bool HasVectorPackedDecimal; 64 bool HasInsertReferenceBitsMultiple; 65 bool HasMiscellaneousExtensions3; 66 bool HasMessageSecurityAssist9; 67 bool HasVectorEnhancements2; 68 bool HasVectorPackedDecimalEnhancement; 69 bool HasEnhancedSort; 70 bool HasDeflateConversion; 71 bool HasVectorPackedDecimalEnhancement2; 72 bool HasNNPAssist; 73 bool HasBEAREnhancement; 74 bool HasResetDATProtection; 75 bool HasProcessorActivityInstrumentation; 76 bool HasSoftFloat; 77 78 private: 79 Triple TargetTriple; 80 std::unique_ptr<SystemZCallingConventionRegisters> SpecialRegisters; 81 SystemZInstrInfo InstrInfo; 82 SystemZTargetLowering TLInfo; 83 SystemZSelectionDAGInfo TSInfo; 84 std::unique_ptr<const SystemZFrameLowering> FrameLowering; 85 86 SystemZSubtarget &initializeSubtargetDependencies(StringRef CPU, 87 StringRef FS); 88 SystemZCallingConventionRegisters *initializeSpecialRegisters(void); 89 90 public: 91 SystemZSubtarget(const Triple &TT, const std::string &CPU, 92 const std::string &FS, const TargetMachine &TM); 93 getSpecialRegisters()94 SystemZCallingConventionRegisters *getSpecialRegisters() const { 95 assert(SpecialRegisters && "Unsupported SystemZ calling convention"); 96 return SpecialRegisters.get(); 97 } 98 getFrameLowering()99 const TargetFrameLowering *getFrameLowering() const override { 100 return FrameLowering.get(); 101 } 102 getFrameLowering()103 template <class TFL> const TFL *getFrameLowering() const { 104 return static_cast<const TFL *>(getFrameLowering()); 105 } 106 getInstrInfo()107 const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; } getRegisterInfo()108 const SystemZRegisterInfo *getRegisterInfo() const override { 109 return &InstrInfo.getRegisterInfo(); 110 } getTargetLowering()111 const SystemZTargetLowering *getTargetLowering() const override { 112 return &TLInfo; 113 } getSelectionDAGInfo()114 const SelectionDAGTargetInfo *getSelectionDAGInfo() const override { 115 return &TSInfo; 116 } 117 118 // True if the subtarget should run MachineScheduler after aggressive 119 // coalescing. This currently replaces the SelectionDAG scheduler with the 120 // "source" order scheduler. enableMachineScheduler()121 bool enableMachineScheduler() const override { return true; } 122 123 // This is important for reducing register pressure in vector code. useAA()124 bool useAA() const override { return true; } 125 126 // Always enable the early if-conversion pass. enableEarlyIfConversion()127 bool enableEarlyIfConversion() const override { return true; } 128 129 // Enable tracking of subregister liveness in register allocator. 130 bool enableSubRegLiveness() const override; 131 132 // Automatically generated by tblgen. 133 void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS); 134 135 // Return true if the target has the distinct-operands facility. hasDistinctOps()136 bool hasDistinctOps() const { return HasDistinctOps; } 137 138 // Return true if the target has the load/store-on-condition facility. hasLoadStoreOnCond()139 bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; } 140 141 // Return true if the target has the load/store-on-condition facility 2. hasLoadStoreOnCond2()142 bool hasLoadStoreOnCond2() const { return HasLoadStoreOnCond2; } 143 144 // Return true if the target has the high-word facility. hasHighWord()145 bool hasHighWord() const { return HasHighWord; } 146 147 // Return true if the target has the floating-point extension facility. hasFPExtension()148 bool hasFPExtension() const { return HasFPExtension; } 149 150 // Return true if the target has the population-count facility. hasPopulationCount()151 bool hasPopulationCount() const { return HasPopulationCount; } 152 153 // Return true if the target has the message-security-assist 154 // extension facility 3. hasMessageSecurityAssist3()155 bool hasMessageSecurityAssist3() const { return HasMessageSecurityAssist3; } 156 157 // Return true if the target has the message-security-assist 158 // extension facility 4. hasMessageSecurityAssist4()159 bool hasMessageSecurityAssist4() const { return HasMessageSecurityAssist4; } 160 161 // Return true if the target has the reset-reference-bits-multiple facility. hasResetReferenceBitsMultiple()162 bool hasResetReferenceBitsMultiple() const { 163 return HasResetReferenceBitsMultiple; 164 } 165 166 // Return true if the target has the fast-serialization facility. hasFastSerialization()167 bool hasFastSerialization() const { return HasFastSerialization; } 168 169 // Return true if the target has interlocked-access facility 1. hasInterlockedAccess1()170 bool hasInterlockedAccess1() const { return HasInterlockedAccess1; } 171 172 // Return true if the target has the miscellaneous-extensions facility. hasMiscellaneousExtensions()173 bool hasMiscellaneousExtensions() const { 174 return HasMiscellaneousExtensions; 175 } 176 177 // Return true if the target has the execution-hint facility. hasExecutionHint()178 bool hasExecutionHint() const { return HasExecutionHint; } 179 180 // Return true if the target has the load-and-trap facility. hasLoadAndTrap()181 bool hasLoadAndTrap() const { return HasLoadAndTrap; } 182 183 // Return true if the target has the transactional-execution facility. hasTransactionalExecution()184 bool hasTransactionalExecution() const { return HasTransactionalExecution; } 185 186 // Return true if the target has the processor-assist facility. hasProcessorAssist()187 bool hasProcessorAssist() const { return HasProcessorAssist; } 188 189 // Return true if the target has the DFP zoned-conversion facility. hasDFPZonedConversion()190 bool hasDFPZonedConversion() const { return HasDFPZonedConversion; } 191 192 // Return true if the target has the enhanced-DAT facility 2. hasEnhancedDAT2()193 bool hasEnhancedDAT2() const { return HasEnhancedDAT2; } 194 195 // Return true if the target has the load-and-zero-rightmost-byte facility. hasLoadAndZeroRightmostByte()196 bool hasLoadAndZeroRightmostByte() const { 197 return HasLoadAndZeroRightmostByte; 198 } 199 200 // Return true if the target has the message-security-assist 201 // extension facility 5. hasMessageSecurityAssist5()202 bool hasMessageSecurityAssist5() const { return HasMessageSecurityAssist5; } 203 204 // Return true if the target has the DFP packed-conversion facility. hasDFPPackedConversion()205 bool hasDFPPackedConversion() const { return HasDFPPackedConversion; } 206 207 // Return true if the target has the vector facility. hasVector()208 bool hasVector() const { return HasVector; } 209 210 // Return true if the target has the miscellaneous-extensions facility 2. hasMiscellaneousExtensions2()211 bool hasMiscellaneousExtensions2() const { 212 return HasMiscellaneousExtensions2; 213 } 214 215 // Return true if the target has the guarded-storage facility. hasGuardedStorage()216 bool hasGuardedStorage() const { return HasGuardedStorage; } 217 218 // Return true if the target has the message-security-assist 219 // extension facility 7. hasMessageSecurityAssist7()220 bool hasMessageSecurityAssist7() const { return HasMessageSecurityAssist7; } 221 222 // Return true if the target has the message-security-assist 223 // extension facility 8. hasMessageSecurityAssist8()224 bool hasMessageSecurityAssist8() const { return HasMessageSecurityAssist8; } 225 226 // Return true if the target has the vector-enhancements facility 1. hasVectorEnhancements1()227 bool hasVectorEnhancements1() const { return HasVectorEnhancements1; } 228 229 // Return true if the target has the vector-packed-decimal facility. hasVectorPackedDecimal()230 bool hasVectorPackedDecimal() const { return HasVectorPackedDecimal; } 231 232 // Return true if the target has the insert-reference-bits-multiple facility. hasInsertReferenceBitsMultiple()233 bool hasInsertReferenceBitsMultiple() const { 234 return HasInsertReferenceBitsMultiple; 235 } 236 237 // Return true if the target has the miscellaneous-extensions facility 3. hasMiscellaneousExtensions3()238 bool hasMiscellaneousExtensions3() const { 239 return HasMiscellaneousExtensions3; 240 } 241 242 // Return true if the target has the message-security-assist 243 // extension facility 9. hasMessageSecurityAssist9()244 bool hasMessageSecurityAssist9() const { return HasMessageSecurityAssist9; } 245 246 // Return true if the target has the vector-enhancements facility 2. hasVectorEnhancements2()247 bool hasVectorEnhancements2() const { return HasVectorEnhancements2; } 248 249 // Return true if the target has the vector-packed-decimal 250 // enhancement facility. hasVectorPackedDecimalEnhancement()251 bool hasVectorPackedDecimalEnhancement() const { 252 return HasVectorPackedDecimalEnhancement; 253 } 254 255 // Return true if the target has the enhanced-sort facility. hasEnhancedSort()256 bool hasEnhancedSort() const { return HasEnhancedSort; } 257 258 // Return true if the target has the deflate-conversion facility. hasDeflateConversion()259 bool hasDeflateConversion() const { return HasDeflateConversion; } 260 261 // Return true if the target has the vector-packed-decimal 262 // enhancement facility 2. hasVectorPackedDecimalEnhancement2()263 bool hasVectorPackedDecimalEnhancement2() const { 264 return HasVectorPackedDecimalEnhancement2; 265 } 266 267 // Return true if the target has the NNP-assist facility. hasNNPAssist()268 bool hasNNPAssist() const { return HasNNPAssist; } 269 270 // Return true if the target has the BEAR-enhancement facility. hasBEAREnhancement()271 bool hasBEAREnhancement() const { return HasBEAREnhancement; } 272 273 // Return true if the target has the reset-DAT-protection facility. hasResetDATProtection()274 bool hasResetDATProtection() const { return HasResetDATProtection; } 275 276 // Return true if the target has the processor-activity-instrumentation 277 // facility. hasProcessorActivityInstrumentation()278 bool hasProcessorActivityInstrumentation() const { 279 return HasProcessorActivityInstrumentation; 280 } 281 282 // Return true if soft float should be used. hasSoftFloat()283 bool hasSoftFloat() const { return HasSoftFloat; } 284 285 // Return true if GV can be accessed using LARL for reloc model RM 286 // and code model CM. 287 bool isPC32DBLSymbol(const GlobalValue *GV, CodeModel::Model CM) const; 288 isTargetELF()289 bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); } 290 291 // Returns TRUE if we are generating GOFF object code isTargetGOFF()292 bool isTargetGOFF() const { return TargetTriple.isOSBinFormatGOFF(); } 293 294 // Returns TRUE if we are using XPLINK64 linkage convention isTargetXPLINK64()295 bool isTargetXPLINK64() const { return (isTargetGOFF() && isTargetzOS()); } 296 297 // Returns TRUE if we are generating code for a s390x machine running zOS isTargetzOS()298 bool isTargetzOS() const { return TargetTriple.isOSzOS(); } 299 }; 300 } // end namespace llvm 301 302 #endif 303