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usr / src / contrib / llvm-project / llvm / lib / Target / AArch64 /

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📄 AArch64.h(4.09 KB)
📄 AArch64.td(49.85 KB)
📄 AArch64A53Fix835769.cpp(8.3 KB)
📄 AArch64A57FPLoadBalancing.cpp(25.73 KB)
📄 AArch64AdvSIMDScalarPass.cpp(16.1 KB)
📄 AArch64AsmPrinter.cpp(49.26 KB)
📄 AArch64BranchTargets.cpp(4.91 KB)
📄 AArch64CallingConvention.cpp(6.63 KB)
📄 AArch64CallingConvention.h(2.62 KB)
📄 AArch64CallingConvention.td(23.84 KB)
📄 AArch64CleanupLocalDynamicTLSPass.cpp(5.53 KB)
📄 AArch64CollectLOH.cpp(20.07 KB)
📄 AArch64Combine.td(3.27 KB)
📄 AArch64CompressJumpTables.cpp(5.06 KB)
📄 AArch64CondBrTuning.cpp(10.19 KB)
📄 AArch64ConditionOptimizer.cpp(15.26 KB)
📄 AArch64ConditionalCompares.cpp(33.26 KB)
📄 AArch64DeadRegisterDefinitionsPass.cpp(7.76 KB)
📄 AArch64ExpandImm.cpp(14.25 KB)
📄 AArch64ExpandImm.h(959 B)
📄 AArch64ExpandPseudoInsts.cpp(38.08 KB)
📄 AArch64FalkorHWPFFix.cpp(23.3 KB)
📄 AArch64FastISel.cpp(171.76 KB)
📄 AArch64FrameLowering.cpp(124.13 KB)
📄 AArch64FrameLowering.h(5.54 KB)
📄 AArch64GenRegisterBankInfo.def(11 KB)
📄 AArch64ISelDAGToDAG.cpp(180.26 KB)
📄 AArch64ISelLowering.cpp(578.95 KB)
📄 AArch64ISelLowering.h(33.88 KB)
📄 AArch64InstrAtomics.td(20.33 KB)
📄 AArch64InstrFormats.td(430.93 KB)
📄 AArch64InstrGISel.td(4.29 KB)
📄 AArch64InstrInfo.cpp(243.23 KB)
📄 AArch64InstrInfo.h(19.92 KB)
📄 AArch64InstrInfo.td(374.84 KB)
📄 AArch64LoadStoreOptimizer.cpp(77.04 KB)
📄 AArch64MCInstLower.cpp(11.72 KB)
📄 AArch64MCInstLower.h(1.69 KB)
📄 AArch64MachineFunctionInfo.cpp(1.02 KB)
📄 AArch64MachineFunctionInfo.h(12.9 KB)
📄 AArch64MacroFusion.cpp(11.47 KB)
📄 AArch64MacroFusion.h(891 B)
📄 AArch64PBQPRegAlloc.cpp(11.35 KB)
📄 AArch64PBQPRegAlloc.h(1.3 KB)
📄 AArch64PerfectShuffle.h(382.04 KB)
📄 AArch64PfmCounters.td(713 B)
📄 AArch64PromoteConstant.cpp(22.43 KB)
📄 AArch64RedundantCopyElimination.cpp(17.09 KB)
📄 AArch64RegisterBanks.td(719 B)
📄 AArch64RegisterInfo.cpp(29.6 KB)
📄 AArch64RegisterInfo.h(5.5 KB)
📄 AArch64RegisterInfo.td(51 KB)
📄 AArch64SIMDInstrOpt.cpp(26.07 KB)
📄 AArch64SLSHardening.cpp(15.92 KB)
📄 AArch64SVEInstrInfo.td(169.43 KB)
📄 AArch64SchedA53.td(15.28 KB)
📄 AArch64SchedA57.td(34.69 KB)
📄 AArch64SchedA57WriteRes.td(19.87 KB)
📄 AArch64SchedCyclone.td(29.82 KB)
📄 AArch64SchedExynosM3.td(42.57 KB)
📄 AArch64SchedExynosM4.td(49.81 KB)
📄 AArch64SchedExynosM5.td(50.74 KB)
📄 AArch64SchedFalkor.td(5.3 KB)
📄 AArch64SchedFalkorDetails.td(67.66 KB)
📄 AArch64SchedKryo.td(6.21 KB)
📄 AArch64SchedKryoDetails.td(82.63 KB)
📄 AArch64SchedPredExynos.td(7.5 KB)
📄 AArch64SchedPredicates.td(27.86 KB)
📄 AArch64SchedThunderX.td(14.99 KB)
📄 AArch64SchedThunderX2T99.td(68.58 KB)
📄 AArch64SchedThunderX3T110.td(68.77 KB)
📄 AArch64Schedule.td(3.86 KB)
📄 AArch64SelectionDAGInfo.cpp(5.54 KB)
📄 AArch64SelectionDAGInfo.h(1.46 KB)
📄 AArch64SpeculationHardening.cpp(29.6 KB)
📄 AArch64StackOffset.h(5.01 KB)
📄 AArch64StackTagging.cpp(24.31 KB)
📄 AArch64StackTaggingPreRA.cpp(7.25 KB)
📄 AArch64StorePairSuppress.cpp(6.26 KB)
📄 AArch64Subtarget.cpp(12.38 KB)
📄 AArch64Subtarget.h(18.49 KB)
📄 AArch64SystemOperands.td(81.75 KB)
📄 AArch64TargetMachine.cpp(26.65 KB)
📄 AArch64TargetMachine.h(3.25 KB)
📄 AArch64TargetObjectFile.cpp(3.35 KB)
📄 AArch64TargetObjectFile.h(2.31 KB)
📄 AArch64TargetTransformInfo.cpp(42.6 KB)
📄 AArch64TargetTransformInfo.h(8.68 KB)
📁 AsmParser
📁 Disassembler
📁 GISel
📁 MCTargetDesc
📄 SVEInstrFormats.td(304.03 KB)
📄 SVEIntrinsicOpts.cpp(8.13 KB)
📁 TargetInfo
📁 Utils

Editing: AArch64MachineFunctionInfo.h

//=- AArch64MachineFunctionInfo.h - AArch64 machine function info -*- C++ -*-=//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares AArch64-specific per-machine-function information.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_AARCH64_AARCH64MACHINEFUNCTIONINFO_H
#define LLVM_LIB_TARGET_AARCH64_AARCH64MACHINEFUNCTIONINFO_H

#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MIRYamlMapping.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/TargetFrameLowering.h"
#include "llvm/IR/Function.h"
#include "llvm/MC/MCLinkerOptimizationHint.h"
#include <cassert>

namespace llvm {

namespace yaml {
struct AArch64FunctionInfo;
} // end namespace yaml

class MachineInstr;

/// AArch64FunctionInfo - This class is derived from MachineFunctionInfo and
/// contains private AArch64-specific information for each MachineFunction.
class AArch64FunctionInfo final : public MachineFunctionInfo {
  /// Number of bytes of arguments this function has on the stack. If the callee
  /// is expected to restore the argument stack this should be a multiple of 16,
  /// all usable during a tail call.
  ///
  /// The alternative would forbid tail call optimisation in some cases: if we
  /// want to transfer control from a function with 8-bytes of stack-argument
  /// space to a function with 16-bytes then misalignment of this value would
  /// make a stack adjustment necessary, which could not be undone by the
  /// callee.
  unsigned BytesInStackArgArea = 0;

/// The number of bytes to restore to deallocate space for incoming
  /// arguments. Canonically 0 in the C calling convention, but non-zero when
  /// callee is expected to pop the args.
  unsigned ArgumentStackToRestore = 0;

/// HasStackFrame - True if this function has a stack frame. Set by
  /// determineCalleeSaves().
  bool HasStackFrame = false;

/// Amount of stack frame size, not including callee-saved registers.
  uint64_t LocalStackSize = 0;

/// The start and end frame indices for the SVE callee saves.
  int MinSVECSFrameIndex = 0;
  int MaxSVECSFrameIndex = 0;

/// Amount of stack frame size used for saving callee-saved registers.
  unsigned CalleeSavedStackSize = 0;
  unsigned SVECalleeSavedStackSize = 0;
  bool HasCalleeSavedStackSize = false;

/// Number of TLS accesses using the special (combinable)
  /// _TLS_MODULE_BASE_ symbol.
  unsigned NumLocalDynamicTLSAccesses = 0;

/// FrameIndex for start of varargs area for arguments passed on the
  /// stack.
  int VarArgsStackIndex = 0;

/// FrameIndex for start of varargs area for arguments passed in
  /// general purpose registers.
  int VarArgsGPRIndex = 0;

/// Size of the varargs area for arguments passed in general purpose
  /// registers.
  unsigned VarArgsGPRSize = 0;

/// FrameIndex for start of varargs area for arguments passed in
  /// floating-point registers.
  int VarArgsFPRIndex = 0;

/// Size of the varargs area for arguments passed in floating-point
  /// registers.
  unsigned VarArgsFPRSize = 0;

/// True if this function has a subset of CSRs that is handled explicitly via
  /// copies.
  bool IsSplitCSR = false;

/// True when the stack gets realigned dynamically because the size of stack
  /// frame is unknown at compile time. e.g., in case of VLAs.
  bool StackRealigned = false;

/// True when the callee-save stack area has unused gaps that may be used for
  /// other stack allocations.
  bool CalleeSaveStackHasFreeSpace = false;

/// SRetReturnReg - sret lowering includes returning the value of the
  /// returned struct in a register. This field holds the virtual register into
  /// which the sret argument is passed.
  unsigned SRetReturnReg = 0;
  /// SVE stack size (for predicates and data vectors) are maintained here
  /// rather than in FrameInfo, as the placement and Stack IDs are target
  /// specific.
  uint64_t StackSizeSVE = 0;

/// HasCalculatedStackSizeSVE indicates whether StackSizeSVE is valid.
  bool HasCalculatedStackSizeSVE = false;

/// Has a value when it is known whether or not the function uses a
  /// redzone, and no value otherwise.
  /// Initialized during frame lowering, unless the function has the noredzone
  /// attribute, in which case it is set to false at construction.
  Optional<bool> HasRedZone;

/// ForwardedMustTailRegParms - A list of virtual and physical registers
  /// that must be forwarded to every musttail call.
  SmallVector<ForwardedRegister, 1> ForwardedMustTailRegParms;

// Offset from SP-at-entry to the tagged base pointer.
  // Tagged base pointer is set up to point to the first (lowest address) tagged
  // stack slot.
  unsigned TaggedBasePointerOffset = 0;

/// OutliningStyle denotes, if a function was outined, how it was outlined,
  /// e.g. Tail Call, Thunk, or Function if none apply.
  Optional<std::string> OutliningStyle;

public:
  AArch64FunctionInfo() = default;

explicit AArch64FunctionInfo(MachineFunction &MF) {
    (void)MF;

// If we already know that the function doesn't have a redzone, set
    // HasRedZone here.
    if (MF.getFunction().hasFnAttribute(Attribute::NoRedZone))
      HasRedZone = false;
  }
  void initializeBaseYamlFields(const yaml::AArch64FunctionInfo &YamlMFI);

unsigned getBytesInStackArgArea() const { return BytesInStackArgArea; }
  void setBytesInStackArgArea(unsigned bytes) { BytesInStackArgArea = bytes; }

unsigned getArgumentStackToRestore() const { return ArgumentStackToRestore; }
  void setArgumentStackToRestore(unsigned bytes) {
    ArgumentStackToRestore = bytes;
  }

bool hasCalculatedStackSizeSVE() const { return HasCalculatedStackSizeSVE; }

void setStackSizeSVE(uint64_t S) {
    HasCalculatedStackSizeSVE = true;
    StackSizeSVE = S;
  }

uint64_t getStackSizeSVE() const { return StackSizeSVE; }

bool hasStackFrame() const { return HasStackFrame; }
  void setHasStackFrame(bool s) { HasStackFrame = s; }

bool isStackRealigned() const { return StackRealigned; }
  void setStackRealigned(bool s) { StackRealigned = s; }

bool hasCalleeSaveStackFreeSpace() const {
    return CalleeSaveStackHasFreeSpace;
  }
  void setCalleeSaveStackHasFreeSpace(bool s) {
    CalleeSaveStackHasFreeSpace = s;
  }
  bool isSplitCSR() const { return IsSplitCSR; }
  void setIsSplitCSR(bool s) { IsSplitCSR = s; }

void setLocalStackSize(uint64_t Size) { LocalStackSize = Size; }
  uint64_t getLocalStackSize() const { return LocalStackSize; }

void setOutliningStyle(std::string Style) { OutliningStyle = Style; }
  Optional<std::string> getOutliningStyle() const { return OutliningStyle; }

void setCalleeSavedStackSize(unsigned Size) {
    CalleeSavedStackSize = Size;
    HasCalleeSavedStackSize = true;
  }

// When CalleeSavedStackSize has not been set (for example when
  // some MachineIR pass is run in isolation), then recalculate
  // the CalleeSavedStackSize directly from the CalleeSavedInfo.
  // Note: This information can only be recalculated after PEI
  // has assigned offsets to the callee save objects.
  unsigned getCalleeSavedStackSize(const MachineFrameInfo &MFI) const {
    bool ValidateCalleeSavedStackSize = false;

#ifndef NDEBUG
    // Make sure the calculated size derived from the CalleeSavedInfo
    // equals the cached size that was calculated elsewhere (e.g. in
    // determineCalleeSaves).
    ValidateCalleeSavedStackSize = HasCalleeSavedStackSize;
#endif

if (!HasCalleeSavedStackSize || ValidateCalleeSavedStackSize) {
      assert(MFI.isCalleeSavedInfoValid() && "CalleeSavedInfo not calculated");
      if (MFI.getCalleeSavedInfo().empty())
        return 0;

int64_t MinOffset = std::numeric_limits<int64_t>::max();
      int64_t MaxOffset = std::numeric_limits<int64_t>::min();
      for (const auto &Info : MFI.getCalleeSavedInfo()) {
        int FrameIdx = Info.getFrameIdx();
        if (MFI.getStackID(FrameIdx) != TargetStackID::Default)
          continue;
        int64_t Offset = MFI.getObjectOffset(FrameIdx);
        int64_t ObjSize = MFI.getObjectSize(FrameIdx);
        MinOffset = std::min<int64_t>(Offset, MinOffset);
        MaxOffset = std::max<int64_t>(Offset + ObjSize, MaxOffset);
      }

unsigned Size = alignTo(MaxOffset - MinOffset, 16);
      assert((!HasCalleeSavedStackSize || getCalleeSavedStackSize() == Size) &&
             "Invalid size calculated for callee saves");
      return Size;
    }

return getCalleeSavedStackSize();
  }

unsigned getCalleeSavedStackSize() const {
    assert(HasCalleeSavedStackSize &&
           "CalleeSavedStackSize has not been calculated");
    return CalleeSavedStackSize;
  }

// Saves the CalleeSavedStackSize for SVE vectors in 'scalable bytes'
  void setSVECalleeSavedStackSize(unsigned Size) {
    SVECalleeSavedStackSize = Size;
  }
  unsigned getSVECalleeSavedStackSize() const {
    return SVECalleeSavedStackSize;
  }

void setMinMaxSVECSFrameIndex(int Min, int Max) {
    MinSVECSFrameIndex = Min;
    MaxSVECSFrameIndex = Max;
  }

int getMinSVECSFrameIndex() const { return MinSVECSFrameIndex; }
  int getMaxSVECSFrameIndex() const { return MaxSVECSFrameIndex; }

void incNumLocalDynamicTLSAccesses() { ++NumLocalDynamicTLSAccesses; }
  unsigned getNumLocalDynamicTLSAccesses() const {
    return NumLocalDynamicTLSAccesses;
  }

Optional<bool> hasRedZone() const { return HasRedZone; }
  void setHasRedZone(bool s) { HasRedZone = s; }

int getVarArgsStackIndex() const { return VarArgsStackIndex; }
  void setVarArgsStackIndex(int Index) { VarArgsStackIndex = Index; }

int getVarArgsGPRIndex() const { return VarArgsGPRIndex; }
  void setVarArgsGPRIndex(int Index) { VarArgsGPRIndex = Index; }

unsigned getVarArgsGPRSize() const { return VarArgsGPRSize; }
  void setVarArgsGPRSize(unsigned Size) { VarArgsGPRSize = Size; }

int getVarArgsFPRIndex() const { return VarArgsFPRIndex; }
  void setVarArgsFPRIndex(int Index) { VarArgsFPRIndex = Index; }

unsigned getVarArgsFPRSize() const { return VarArgsFPRSize; }
  void setVarArgsFPRSize(unsigned Size) { VarArgsFPRSize = Size; }

unsigned getSRetReturnReg() const { return SRetReturnReg; }
  void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }

unsigned getJumpTableEntrySize(int Idx) const {
    auto It = JumpTableEntryInfo.find(Idx);
    if (It != JumpTableEntryInfo.end())
      return It->second.first;
    return 4;
  }
  MCSymbol *getJumpTableEntryPCRelSymbol(int Idx) const {
    return JumpTableEntryInfo.find(Idx)->second.second;
  }
  void setJumpTableEntryInfo(int Idx, unsigned Size, MCSymbol *PCRelSym) {
    JumpTableEntryInfo[Idx] = std::make_pair(Size, PCRelSym);
  }

using SetOfInstructions = SmallPtrSet<const MachineInstr *, 16>;

const SetOfInstructions &getLOHRelated() const { return LOHRelated; }

// Shortcuts for LOH related types.
  class MILOHDirective {
    MCLOHType Kind;

/// Arguments of this directive. Order matters.
    SmallVector<const MachineInstr *, 3> Args;

public:
    using LOHArgs = ArrayRef<const MachineInstr *>;

MILOHDirective(MCLOHType Kind, LOHArgs Args)
        : Kind(Kind), Args(Args.begin(), Args.end()) {
      assert(isValidMCLOHType(Kind) && "Invalid LOH directive type!");
    }

MCLOHType getKind() const { return Kind; }
    LOHArgs getArgs() const { return Args; }
  };

using MILOHArgs = MILOHDirective::LOHArgs;
  using MILOHContainer = SmallVector<MILOHDirective, 32>;

const MILOHContainer &getLOHContainer() const { return LOHContainerSet; }

/// Add a LOH directive of this @p Kind and this @p Args.
  void addLOHDirective(MCLOHType Kind, MILOHArgs Args) {
    LOHContainerSet.push_back(MILOHDirective(Kind, Args));
    LOHRelated.insert(Args.begin(), Args.end());
  }

SmallVectorImpl<ForwardedRegister> &getForwardedMustTailRegParms() {
    return ForwardedMustTailRegParms;
  }

unsigned getTaggedBasePointerOffset() const {
    return TaggedBasePointerOffset;
  }
  void setTaggedBasePointerOffset(unsigned Offset) {
    TaggedBasePointerOffset = Offset;
  }

private:
  // Hold the lists of LOHs.
  MILOHContainer LOHContainerSet;
  SetOfInstructions LOHRelated;

DenseMap<int, std::pair<unsigned, MCSymbol *>> JumpTableEntryInfo;
};

namespace yaml {
struct AArch64FunctionInfo final : public yaml::MachineFunctionInfo {
  Optional<bool> HasRedZone;

AArch64FunctionInfo() = default;
  AArch64FunctionInfo(const llvm::AArch64FunctionInfo &MFI);

void mappingImpl(yaml::IO &YamlIO) override;
  ~AArch64FunctionInfo() = default;
};

template <> struct MappingTraits<AArch64FunctionInfo> {
  static void mapping(IO &YamlIO, AArch64FunctionInfo &MFI) {
    YamlIO.mapOptional("hasRedZone", MFI.HasRedZone);
  }
};

} // end namespace yaml

} // end namespace llvm

#endif // LLVM_LIB_TARGET_AARCH64_AARCH64MACHINEFUNCTIONINFO_H

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