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
26namespace llvm {
27
28class SystemZTargetMachine : public CodeGenTargetMachineImpl {
29 std::unique_ptr<TargetLoweringObjectFile> TLOF;
30
31 mutable StringMap<std::unique_ptr<SystemZSubtarget>> SubtargetMap;
32
33public:
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 ScheduleDAGInstrs *
59 createPostMachineScheduler(MachineSchedContext *C) const override;
60
61 bool targetSchedulesPostRAScheduling() const override { return true; };
62};
63
64} // end namespace llvm
65
66#endif // LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZTARGETMACHINE_H
67