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
25namespace llvm {
26
27class SystemZTargetMachine : public LLVMTargetMachine {
28 std::unique_ptr<TargetLoweringObjectFile> TLOF;
29
30 mutable StringMap<std::unique_ptr<SystemZSubtarget>> SubtargetMap;
31
32public:
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, CodeGenOptLevel 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