llvm/lib/Target/SystemZ/SystemZTargetMachine.h

   1 //=- SystemZTargetMachine.h - Define TargetMachine for SystemZ ----*- 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 TargetMachine.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13
  14 #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETMACHINE_H
  15 #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETMACHINE_H
  16
  17 #include "SystemZSubtarget.h"
  18 #include "llvm/ADT/StringRef.h"
  19 #include "llvm/Analysis/TargetTransformInfo.h"
  20 #include "llvm/CodeGen/CodeGenTargetMachineImpl.h"
  21 #include "llvm/Support/CodeGen.h"
  22 #include "llvm/Target/TargetMachine.h"
  23 #include <memory>
  24 #include <optional>
  25
  26 namespace llvm {
  27
  28 class SystemZTargetMachine : public CodeGenTargetMachineImpl {
  29   std::unique_ptr<TargetLoweringObjectFile> TLOF;
  30
  31   mutable StringMap<std::unique_ptr<SystemZSubtarget>> SubtargetMap;
  32
  33 public:
  34   SystemZTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  35                        StringRef FS, const TargetOptions &Options,
  36                        std::optional<Reloc::Model> RM,
  37                        std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
  38                        bool JIT);
  39   ~SystemZTargetMachine() override;
  40
  41   const SystemZSubtarget *getSubtargetImpl(const Function &) const override;
  42   // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
  43   // subtargets are per-function entities based on the target-specific
  44   // attributes of each function.
  45   const SystemZSubtarget *getSubtargetImpl() const = delete;
  46
  47   // Override CodeGenTargetMachineImpl
  48   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
  49   TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
  50
  51   TargetLoweringObjectFile *getObjFileLowering() const override {
  52     return TLOF.get();
  53   }
  54
  55   MachineFunctionInfo *
  56   createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
  57                             const TargetSubtargetInfo *STI) const override;
  58
  59   bool targetSchedulesPostRAScheduling() const override { return true; };
  60 };
  61
  62 } // end namespace llvm
  63
  64 #endif // LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETMACHINE_H