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