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diff --git a/contrib/llvm-project/llvm/lib/Target/SystemZ/SystemZSubtarget.h b/contrib/llvm-project/llvm/lib/Target/SystemZ/SystemZSubtarget.h
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+++ b/contrib/llvm-project/llvm/lib/Target/SystemZ/SystemZSubtarget.h
@@ -0,0 +1,250 @@
+//===-- SystemZSubtarget.h - SystemZ subtarget information -----*- C++ -*--===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the SystemZ specific subclass of TargetSubtargetInfo.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H
+#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZSUBTARGET_H
+
+#include "SystemZFrameLowering.h"
+#include "SystemZISelLowering.h"
+#include "SystemZInstrInfo.h"
+#include "SystemZRegisterInfo.h"
+#include "SystemZSelectionDAGInfo.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/CodeGen/TargetSubtargetInfo.h"
+#include "llvm/IR/DataLayout.h"
+#include <string>
+
+#define GET_SUBTARGETINFO_HEADER
+#include "SystemZGenSubtargetInfo.inc"
+
+namespace llvm {
+class GlobalValue;
+class StringRef;
+
+class SystemZSubtarget : public SystemZGenSubtargetInfo {
+  virtual void anchor();
+protected:
+  bool HasDistinctOps;
+  bool HasLoadStoreOnCond;
+  bool HasHighWord;
+  bool HasFPExtension;
+  bool HasPopulationCount;
+  bool HasMessageSecurityAssist3;
+  bool HasMessageSecurityAssist4;
+  bool HasResetReferenceBitsMultiple;
+  bool HasFastSerialization;
+  bool HasInterlockedAccess1;
+  bool HasMiscellaneousExtensions;
+  bool HasExecutionHint;
+  bool HasLoadAndTrap;
+  bool HasTransactionalExecution;
+  bool HasProcessorAssist;
+  bool HasDFPZonedConversion;
+  bool HasEnhancedDAT2;
+  bool HasVector;
+  bool HasLoadStoreOnCond2;
+  bool HasLoadAndZeroRightmostByte;
+  bool HasMessageSecurityAssist5;
+  bool HasDFPPackedConversion;
+  bool HasMiscellaneousExtensions2;
+  bool HasGuardedStorage;
+  bool HasMessageSecurityAssist7;
+  bool HasMessageSecurityAssist8;
+  bool HasVectorEnhancements1;
+  bool HasVectorPackedDecimal;
+  bool HasInsertReferenceBitsMultiple;
+  bool HasMiscellaneousExtensions3;
+  bool HasMessageSecurityAssist9;
+  bool HasVectorEnhancements2;
+  bool HasVectorPackedDecimalEnhancement;
+  bool HasEnhancedSort;
+  bool HasDeflateConversion;
+
+private:
+  Triple TargetTriple;
+  SystemZInstrInfo InstrInfo;
+  SystemZTargetLowering TLInfo;
+  SystemZSelectionDAGInfo TSInfo;
+  SystemZFrameLowering FrameLowering;
+
+  SystemZSubtarget &initializeSubtargetDependencies(StringRef CPU,
+                                                    StringRef FS);
+public:
+  SystemZSubtarget(const Triple &TT, const std::string &CPU,
+                   const std::string &FS, const TargetMachine &TM);
+
+  const TargetFrameLowering *getFrameLowering() const override {
+    return &FrameLowering;
+  }
+  const SystemZInstrInfo *getInstrInfo() const override { return &InstrInfo; }
+  const SystemZRegisterInfo *getRegisterInfo() const override {
+    return &InstrInfo.getRegisterInfo();
+  }
+  const SystemZTargetLowering *getTargetLowering() const override {
+    return &TLInfo;
+  }
+  const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
+    return &TSInfo;
+  }
+
+  // True if the subtarget should run MachineScheduler after aggressive
+  // coalescing. This currently replaces the SelectionDAG scheduler with the
+  // "source" order scheduler.
+  bool enableMachineScheduler() const override { return true; }
+
+  // This is important for reducing register pressure in vector code.
+  bool useAA() const override { return true; }
+
+  // Always enable the early if-conversion pass.
+  bool enableEarlyIfConversion() const override { return true; }
+
+  // Enable tracking of subregister liveness in register allocator.
+  bool enableSubRegLiveness() const override;
+
+  // Automatically generated by tblgen.
+  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
+
+  // Return true if the target has the distinct-operands facility.
+  bool hasDistinctOps() const { return HasDistinctOps; }
+
+  // Return true if the target has the load/store-on-condition facility.
+  bool hasLoadStoreOnCond() const { return HasLoadStoreOnCond; }
+
+  // Return true if the target has the load/store-on-condition facility 2.
+  bool hasLoadStoreOnCond2() const { return HasLoadStoreOnCond2; }
+
+  // Return true if the target has the high-word facility.
+  bool hasHighWord() const { return HasHighWord; }
+
+  // Return true if the target has the floating-point extension facility.
+  bool hasFPExtension() const { return HasFPExtension; }
+
+  // Return true if the target has the population-count facility.
+  bool hasPopulationCount() const { return HasPopulationCount; }
+
+  // Return true if the target has the message-security-assist
+  // extension facility 3.
+  bool hasMessageSecurityAssist3() const { return HasMessageSecurityAssist3; }
+
+  // Return true if the target has the message-security-assist
+  // extension facility 4.
+  bool hasMessageSecurityAssist4() const { return HasMessageSecurityAssist4; }
+
+  // Return true if the target has the reset-reference-bits-multiple facility.
+  bool hasResetReferenceBitsMultiple() const {
+    return HasResetReferenceBitsMultiple;
+  }
+
+  // Return true if the target has the fast-serialization facility.
+  bool hasFastSerialization() const { return HasFastSerialization; }
+
+  // Return true if the target has interlocked-access facility 1.
+  bool hasInterlockedAccess1() const { return HasInterlockedAccess1; }
+
+  // Return true if the target has the miscellaneous-extensions facility.
+  bool hasMiscellaneousExtensions() const {
+    return HasMiscellaneousExtensions;
+  }
+
+  // Return true if the target has the execution-hint facility.
+  bool hasExecutionHint() const { return HasExecutionHint; }
+
+  // Return true if the target has the load-and-trap facility.
+  bool hasLoadAndTrap() const { return HasLoadAndTrap; }
+
+  // Return true if the target has the transactional-execution facility.
+  bool hasTransactionalExecution() const { return HasTransactionalExecution; }
+
+  // Return true if the target has the processor-assist facility.
+  bool hasProcessorAssist() const { return HasProcessorAssist; }
+
+  // Return true if the target has the DFP zoned-conversion facility.
+  bool hasDFPZonedConversion() const { return HasDFPZonedConversion; }
+
+  // Return true if the target has the enhanced-DAT facility 2.
+  bool hasEnhancedDAT2() const { return HasEnhancedDAT2; }
+
+  // Return true if the target has the load-and-zero-rightmost-byte facility.
+  bool hasLoadAndZeroRightmostByte() const {
+    return HasLoadAndZeroRightmostByte;
+  }
+
+  // Return true if the target has the message-security-assist
+  // extension facility 5.
+  bool hasMessageSecurityAssist5() const { return HasMessageSecurityAssist5; }
+
+  // Return true if the target has the DFP packed-conversion facility.
+  bool hasDFPPackedConversion() const { return HasDFPPackedConversion; }
+
+  // Return true if the target has the vector facility.
+  bool hasVector() const { return HasVector; }
+
+  // Return true if the target has the miscellaneous-extensions facility 2.
+  bool hasMiscellaneousExtensions2() const {
+    return HasMiscellaneousExtensions2;
+  }
+
+  // Return true if the target has the guarded-storage facility.
+  bool hasGuardedStorage() const { return HasGuardedStorage; }
+
+  // Return true if the target has the message-security-assist
+  // extension facility 7.
+  bool hasMessageSecurityAssist7() const { return HasMessageSecurityAssist7; }
+
+  // Return true if the target has the message-security-assist
+  // extension facility 8.
+  bool hasMessageSecurityAssist8() const { return HasMessageSecurityAssist8; }
+
+  // Return true if the target has the vector-enhancements facility 1.
+  bool hasVectorEnhancements1() const { return HasVectorEnhancements1; }
+
+  // Return true if the target has the vector-packed-decimal facility.
+  bool hasVectorPackedDecimal() const { return HasVectorPackedDecimal; }
+
+  // Return true if the target has the insert-reference-bits-multiple facility.
+  bool hasInsertReferenceBitsMultiple() const {
+    return HasInsertReferenceBitsMultiple;
+  }
+
+  // Return true if the target has the miscellaneous-extensions facility 3.
+  bool hasMiscellaneousExtensions3() const {
+    return HasMiscellaneousExtensions3;
+  }
+
+  // Return true if the target has the message-security-assist
+  // extension facility 9.
+  bool hasMessageSecurityAssist9() const { return HasMessageSecurityAssist9; }
+
+  // Return true if the target has the vector-enhancements facility 2.
+  bool hasVectorEnhancements2() const { return HasVectorEnhancements2; }
+
+  // Return true if the target has the vector-packed-decimal
+  // enhancement facility.
+  bool hasVectorPackedDecimalEnhancement() const {
+    return HasVectorPackedDecimalEnhancement;
+  }
+
+  // Return true if the target has the enhanced-sort facility.
+  bool hasEnhancedSort() const { return HasEnhancedSort; }
+
+  // Return true if the target has the deflate-conversion facility.
+  bool hasDeflateConversion() const { return HasDeflateConversion; }
+
+  // Return true if GV can be accessed using LARL for reloc model RM
+  // and code model CM.
+  bool isPC32DBLSymbol(const GlobalValue *GV, CodeModel::Model CM) const;
+
+  bool isTargetELF() const { return TargetTriple.isOSBinFormatELF(); }
+};
+} // end namespace llvm
+
+#endif