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 65