llvm/lib/Target/LoongArch/LoongArchSubtarget.h

   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
  35 #define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER)                    \
  36   bool ATTRIBUTE = DEFAULT;
  37 #include "LoongArchGenSubtargetInfo.inc"
  38
  39   unsigned GRLen = 32;
  40   // TODO: The default value is empirical and conservative. Override the
  41   // default in initializeProperties once we support optimizing for more
  42   // uarches.
  43   uint8_t MaxInterleaveFactor = 2;
  44   MVT GRLenVT = MVT::i32;
  45   LoongArchABI::ABI TargetABI = LoongArchABI::ABI_Unknown;
  46   LoongArchFrameLowering FrameLowering;
  47   LoongArchInstrInfo InstrInfo;
  48   LoongArchRegisterInfo RegInfo;
  49   LoongArchTargetLowering TLInfo;
  50   SelectionDAGTargetInfo TSInfo;
  51
  52   Align PrefFunctionAlignment;
  53   Align PrefLoopAlignment;
  54   unsigned MaxBytesForAlignment;
  55
  56   /// Initializes using the passed in CPU and feature strings so that we can
  57   /// use initializer lists for subtarget initialization.
  58   LoongArchSubtarget &initializeSubtargetDependencies(const Triple &TT,
  59                                                       StringRef CPU,
  60                                                       StringRef TuneCPU,
  61                                                       StringRef FS,
  62                                                       StringRef ABIName);
  63
  64   /// Initialize properties based on the selected processor family.
  65   void initializeProperties(StringRef TuneCPU);
  66
  67 public:
  68   // Initializes the data members to match that of the specified triple.
  69   LoongArchSubtarget(const Triple &TT, StringRef CPU, StringRef TuneCPU,
  70                      StringRef FS, StringRef ABIName, const TargetMachine &TM);
  71
  72   // Parses features string setting specified subtarget options. The
  73   // definition of this function is auto-generated by tblgen.
  74   void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS);
  75
  76   const LoongArchFrameLowering *getFrameLowering() const override {
  77     return &FrameLowering;
  78   }
  79   const LoongArchInstrInfo *getInstrInfo() const override { return &InstrInfo; }
  80   const LoongArchRegisterInfo *getRegisterInfo() const override {
  81     return &RegInfo;
  82   }
  83   const LoongArchTargetLowering *getTargetLowering() const override {
  84     return &TLInfo;
  85   }
  86   const SelectionDAGTargetInfo *getSelectionDAGInfo() const override {
  87     return &TSInfo;
  88   }
  89
  90 #define GET_SUBTARGETINFO_MACRO(ATTRIBUTE, DEFAULT, GETTER)                    \
  91   bool GETTER() const { return ATTRIBUTE; }
  92 #include "LoongArchGenSubtargetInfo.inc"
  93
  94   bool is64Bit() const { return HasLA64; }
  95   MVT getGRLenVT() const { return GRLenVT; }
  96   unsigned getGRLen() const { return GRLen; }
  97   LoongArchABI::ABI getTargetABI() const { return TargetABI; }
  98   bool isSoftFPABI() const {
  99     return TargetABI == LoongArchABI::ABI_LP64S ||
 100            TargetABI == LoongArchABI::ABI_ILP32S;
 101   }
 102   bool isXRaySupported() const override { return is64Bit(); }
 103   Align getPrefFunctionAlignment() const { return PrefFunctionAlignment; }
 104   Align getPrefLoopAlignment() const { return PrefLoopAlignment; }
 105   unsigned getMaxBytesForAlignment() const { return MaxBytesForAlignment; }
 106   unsigned getMaxInterleaveFactor() const { return MaxInterleaveFactor; }
 107   bool enableMachineScheduler() const override { return true; }
 108 };
 109 } // end namespace llvm
 110
 111 #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHSUBTARGET_H