1//===-- SparcSubtarget.h - Define Subtarget for the SPARC -------*- 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 SPARC specific subclass of TargetSubtargetInfo.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
14#define LLVM_LIB_TARGET_SPARC_SPARCSUBTARGET_H
15
16#include "MCTargetDesc/SparcMCTargetDesc.h"
17#include "SparcFrameLowering.h"
18#include "SparcISelLowering.h"
19#include "SparcInstrInfo.h"
20#include "llvm/CodeGen/SelectionDAGTargetInfo.h"
21#include "llvm/CodeGen/TargetSubtargetInfo.h"
22#include "llvm/IR/DataLayout.h"
23#include "llvm/Support/ErrorHandling.h"
24#include "llvm/TargetParser/Triple.h"
25#include <string>
26
27#define GET_SUBTARGETINFO_HEADER
28#include "SparcGenSubtargetInfo.inc"
29
30namespace llvm {
31class StringRef;
32
33class SparcSubtarget : public SparcGenSubtargetInfo {
34 // ReserveRegister[i] - Register #i is not available as a general purpose
35 // register.
36 BitVector ReserveRegister;
37
38 Triple TargetTriple;
39 virtual void anchor();
40
41 bool Is64Bit;
42
43#define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \
44 bool ATTRIBUTE = DEFAULT;
45#include "SparcGenSubtargetInfo.inc"
46
47 SparcInstrInfo InstrInfo;
48 SparcTargetLowering TLInfo;
49 SelectionDAGTargetInfo TSInfo;
50 SparcFrameLowering FrameLowering;
51
52public:
53 SparcSubtarget(const StringRef &CPU, const StringRef &TuneCPU,
54 const StringRef &FS, const TargetMachine &TM, bool is64bit);
55
56 const SparcInstrInfo *getInstrInfo() const override { return &InstrInfo; }
57 const TargetFrameLowering *getFrameLowering() const override {
58 return &FrameLowering;
59 }
60 const SparcRegisterInfo *getRegisterInfo() const override {
61 return &InstrInfo.getRegisterInfo();
62 }
63 const SparcTargetLowering *getTargetLowering() const override {
64 return &TLInfo;
65 }
66 const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
67 return &TSInfo;
68 }
69
70 bool enableMachineScheduler() const override;
71
72#define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER) \
73 bool GETTER() const { return ATTRIBUTE; }
74#include "SparcGenSubtargetInfo.inc"
75
76 /// ParseSubtargetFeatures - Parses features string setting specified
77 /// subtarget options. Definition of function is auto generated by tblgen.
78 void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
79 SparcSubtarget &initializeSubtargetDependencies(StringRef CPU,
80 StringRef TuneCPU,
81 StringRef FS);
82
83 bool is64Bit() const { return Is64Bit; }
84
85 /// The 64-bit ABI uses biased stack and frame pointers, so the stack frame
86 /// of the current function is the area from [%sp+BIAS] to [%fp+BIAS].
87 int64_t getStackPointerBias() const {
88 return is64Bit() ? 2047 : 0;
89 }
90
91 bool isRegisterReserved(MCPhysReg PhysReg) const {
92 return ReserveRegister[PhysReg];
93 }
94
95 /// Given a actual stack size as determined by FrameInfo, this function
96 /// returns adjusted framesize which includes space for register window
97 /// spills and arguments.
98 int getAdjustedFrameSize(int stackSize) const;
99
100 bool isTargetLinux() const { return TargetTriple.isOSLinux(); }
101};
102
103} // end namespace llvm
104
105#endif
106