1 //===- LoongArchSubtarget.h - Define Subtarget for the LoongArch -*- 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 LoongArch specific subclass of TargetSubtargetInfo.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H
14 #define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H
15 
16 #include "LoongArchFrameLowering.h"
17 #include "LoongArchISelLowering.h"
18 #include "LoongArchInstrInfo.h"
19 #include "LoongArchRegisterInfo.h"
20 #include "MCTargetDesc/LoongArchBaseInfo.h"
21 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
22 #include "llvm/CodeGen/TargetSubtargetInfo.h"
23 #include "llvm/IR/DataLayout.h"
24 #include "llvm/Target/TargetMachine.h"
25 
26 #define GET_SUBTARGETINFO_HEADER
27 #include "LoongArchGenSubtargetInfo.inc"
28 
29 namespace llvm {
30 class StringRef;
31 
32 class LoongArchSubtarget : public LoongArchGenSubtargetInfo {
33   virtual void anchor();
34   bool HasLA64 = false;
35   bool HasBasicF = false;
36   bool HasBasicD = false;
37   bool HasExtLSX = false;
38   bool HasExtLASX = false;
39   bool HasExtLVZ = false;
40   bool HasExtLBT = false;
41   unsigned GRLen = 32;
42   MVT GRLenVT = MVT::i32;
43   LoongArchABI::ABI TargetABI = LoongArchABI::ABI_Unknown;
44   LoongArchFrameLowering FrameLowering;
45   LoongArchInstrInfo InstrInfo;
46   LoongArchRegisterInfo RegInfo;
47   LoongArchTargetLowering TLInfo;
48 
49   /// Initializes using the passed in CPU and feature strings so that we can
50   /// use initializer lists for subtarget initialization.
51   LoongArchSubtarget &initializeSubtargetDependencies(const Triple &TT,
52                                                       StringRef CPU,
53                                                       StringRef TuneCPU,
54                                                       StringRef FS,
55                                                       StringRef ABIName);
56 
57 public:
58   // Initializes the data members to match that of the specified triple.
59   LoongArchSubtarget(const Triple &TT, StringRef CPU, StringRef TuneCPU,
60                      StringRef FS, StringRef ABIName, const TargetMachine &TM);
61 
62   // Parses features string setting specified subtarget options. The
63   // definition of this function is auto-generated by tblgen.
64   void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
65 
66   const LoongArchFrameLowering *getFrameLowering() const override {
67     return &FrameLowering;
68   }
69   const LoongArchInstrInfo *getInstrInfo() const override { return &InstrInfo; }
70   const LoongArchRegisterInfo *getRegisterInfo() const override {
71     return &RegInfo;
72   }
73   const LoongArchTargetLowering *getTargetLowering() const override {
74     return &TLInfo;
75   }
76   bool is64Bit() const { return HasLA64; }
77   bool hasBasicF() const { return HasBasicF; }
78   bool hasBasicD() const { return HasBasicD; }
79   bool hasExtLSX() const { return HasExtLSX; }
80   bool hasExtLASX() const { return HasExtLASX; }
81   bool hasExtLVZ() const { return HasExtLVZ; }
82   bool hasExtLBT() const { return HasExtLBT; }
83   MVT getGRLenVT() const { return GRLenVT; }
84   unsigned getGRLen() const { return GRLen; }
85   LoongArchABI::ABI getTargetABI() const { return TargetABI; }
86 };
87 } // end namespace llvm
88 
89 #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H
90