File Manager

003 File Manager

Current Path: /usr/src/contrib/llvm-project/llvm/lib/Target/X86

usr / src / contrib / llvm-project / llvm / lib / Target / X86 /

📁 ..
📁 AsmParser
📁 Disassembler
📄 ImmutableGraph.h(15.15 KB)
📁 MCTargetDesc
📁 TargetInfo
📄 X86.h(7.41 KB)
📄 X86.td(68.44 KB)
📄 X86AsmPrinter.cpp(27.18 KB)
📄 X86AsmPrinter.h(5.96 KB)
📄 X86AvoidStoreForwardingBlocks.cpp(27.94 KB)
📄 X86AvoidTrailingCall.cpp(4.91 KB)
📄 X86CallFrameOptimization.cpp(23.07 KB)
📄 X86CallLowering.cpp(17.62 KB)
📄 X86CallLowering.h(1.74 KB)
📄 X86CallingConv.cpp(13.34 KB)
📄 X86CallingConv.h(1.09 KB)
📄 X86CallingConv.td(46.15 KB)
📄 X86CmovConversion.cpp(34.07 KB)
📄 X86CondBrFolding.cpp(18.4 KB)
📄 X86DiscriminateMemOps.cpp(7.11 KB)
📄 X86DomainReassignment.cpp(25.87 KB)
📄 X86EvexToVex.cpp(8.8 KB)
📄 X86ExpandPseudo.cpp(16.95 KB)
📄 X86FastISel.cpp(139.28 KB)
📄 X86FixupBWInsts.cpp(18.09 KB)
📄 X86FixupLEAs.cpp(24.44 KB)
📄 X86FixupSetCC.cpp(4.44 KB)
📄 X86FlagsCopyLowering.cpp(40.36 KB)
📄 X86FloatingPoint.cpp(62.66 KB)
📄 X86FrameLowering.cpp(138.71 KB)
📄 X86FrameLowering.h(11.64 KB)
📄 X86GenRegisterBankInfo.def(3.32 KB)
📄 X86ISelDAGToDAG.cpp(208.37 KB)
📄 X86ISelLowering.cpp(1.94 MB)
📄 X86ISelLowering.h(60.88 KB)
📄 X86IndirectBranchTracking.cpp(6.17 KB)
📄 X86IndirectThunks.cpp(9.78 KB)
📄 X86InsertPrefetch.cpp(9.64 KB)
📄 X86InsertWait.cpp(4.47 KB)
📄 X86Instr3DNow.td(5.24 KB)
📄 X86InstrAMX.td(5.6 KB)
📄 X86InstrAVX512.td(653.76 KB)
📄 X86InstrArithmetic.td(75.61 KB)
📄 X86InstrBuilder.h(8.45 KB)
📄 X86InstrCMovSetCC.td(5.76 KB)
📄 X86InstrCompiler.td(95.78 KB)
📄 X86InstrControl.td(20.53 KB)
📄 X86InstrExtension.td(11.64 KB)
📄 X86InstrFMA.td(33.23 KB)
📄 X86InstrFMA3Info.cpp(6.21 KB)
📄 X86InstrFMA3Info.h(3.25 KB)
📄 X86InstrFPStack.td(39.52 KB)
📄 X86InstrFoldTables.cpp(393.01 KB)
📄 X86InstrFoldTables.h(3.03 KB)
📄 X86InstrFormats.td(41.05 KB)
📄 X86InstrFragmentsSIMD.td(61.14 KB)
📄 X86InstrInfo.cpp(322.72 KB)
📄 X86InstrInfo.h(29.34 KB)
📄 X86InstrInfo.td(169.76 KB)
📄 X86InstrMMX.td(29.55 KB)
📄 X86InstrMPX.td(3.63 KB)
📄 X86InstrSGX.td(1.12 KB)
📄 X86InstrSSE.td(385.01 KB)
📄 X86InstrSVM.td(2.16 KB)
📄 X86InstrShiftRotate.td(49.56 KB)
📄 X86InstrSystem.td(34.03 KB)
📄 X86InstrTSX.td(2.1 KB)
📄 X86InstrVMX.td(3.53 KB)
📄 X86InstrVecCompiler.td(21.09 KB)
📄 X86InstrXOP.td(23.81 KB)
📄 X86InstructionSelector.cpp(61.11 KB)
📄 X86InterleavedAccess.cpp(32.7 KB)
📄 X86IntrinsicsInfo.h(73.96 KB)
📄 X86LegalizerInfo.cpp(15.6 KB)
📄 X86LegalizerInfo.h(1.65 KB)
📄 X86LoadValueInjectionLoadHardening.cpp(32.4 KB)
📄 X86LoadValueInjectionRetHardening.cpp(4.93 KB)
📄 X86MCInstLower.cpp(96.53 KB)
📄 X86MachineFunctionInfo.cpp(1.1 KB)
📄 X86MachineFunctionInfo.h(8.87 KB)
📄 X86MacroFusion.cpp(2.62 KB)
📄 X86MacroFusion.h(992 B)
📄 X86OptimizeLEAs.cpp(27.47 KB)
📄 X86PadShortFunction.cpp(7.33 KB)
📄 X86PartialReduction.cpp(15.46 KB)
📄 X86PfmCounters.td(10.18 KB)
📄 X86RegisterBankInfo.cpp(10.55 KB)
📄 X86RegisterBankInfo.h(2.87 KB)
📄 X86RegisterBanks.td(629 B)
📄 X86RegisterInfo.cpp(29 KB)
📄 X86RegisterInfo.h(5.61 KB)
📄 X86RegisterInfo.td(26.07 KB)
📄 X86SchedBroadwell.td(69.45 KB)
📄 X86SchedHaswell.td(73.96 KB)
📄 X86SchedPredicates.td(4.23 KB)
📄 X86SchedSandyBridge.td(50 KB)
📄 X86SchedSkylakeClient.td(74.65 KB)
📄 X86SchedSkylakeServer.td(113.85 KB)
📄 X86Schedule.td(36.9 KB)
📄 X86ScheduleAtom.td(38.26 KB)
📄 X86ScheduleBdVer2.td(56.78 KB)
📄 X86ScheduleBtVer2.td(46.98 KB)
📄 X86ScheduleSLM.td(22.91 KB)
📄 X86ScheduleZnver1.td(48.97 KB)
📄 X86ScheduleZnver2.td(48.12 KB)
📄 X86SelectionDAGInfo.cpp(12.02 KB)
📄 X86SelectionDAGInfo.h(1.8 KB)
📄 X86ShuffleDecodeConstantPool.cpp(11.22 KB)
📄 X86ShuffleDecodeConstantPool.h(2.13 KB)
📄 X86SpeculativeExecutionSideEffectSuppression.cpp(6.97 KB)
📄 X86SpeculativeLoadHardening.cpp(93.16 KB)
📄 X86Subtarget.cpp(13.25 KB)
📄 X86Subtarget.h(32.08 KB)
📄 X86TargetMachine.cpp(18.88 KB)
📄 X86TargetMachine.h(2.04 KB)
📄 X86TargetObjectFile.cpp(2.61 KB)
📄 X86TargetObjectFile.h(2.13 KB)
📄 X86TargetTransformInfo.cpp(189.14 KB)
📄 X86TargetTransformInfo.h(9.63 KB)
📄 X86VZeroUpper.cpp(12.59 KB)
📄 X86WinAllocaExpander.cpp(9.54 KB)
📄 X86WinEHState.cpp(28.97 KB)

Editing: X86FrameLowering.h

//===-- X86TargetFrameLowering.h - Define frame lowering for X86 -*- 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 class implements X86-specific bits of TargetFrameLowering class.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_X86_X86FRAMELOWERING_H
#define LLVM_LIB_TARGET_X86_X86FRAMELOWERING_H

#include "llvm/CodeGen/TargetFrameLowering.h"

namespace llvm {

class MachineInstrBuilder;
class MCCFIInstruction;
class X86InstrInfo;
class X86Subtarget;
class X86RegisterInfo;

class X86FrameLowering : public TargetFrameLowering {
public:
  X86FrameLowering(const X86Subtarget &STI, MaybeAlign StackAlignOverride);

// Cached subtarget predicates.

const X86Subtarget &STI;
  const X86InstrInfo &TII;
  const X86RegisterInfo *TRI;

unsigned SlotSize;

/// Is64Bit implies that x86_64 instructions are available.
  bool Is64Bit;

bool IsLP64;

/// True if the 64-bit frame or stack pointer should be used. True for most
  /// 64-bit targets with the exception of x32. If this is false, 32-bit
  /// instruction operands should be used to manipulate StackPtr and FramePtr.
  bool Uses64BitFramePtr;

unsigned StackPtr;

/// Emit target stack probe code. This is required for all
  /// large stack allocations on Windows. The caller is required to materialize
  /// the number of bytes to probe in RAX/EAX.
  void emitStackProbe(MachineFunction &MF, MachineBasicBlock &MBB,
                      MachineBasicBlock::iterator MBBI, const DebugLoc &DL,
                      bool InProlog) const;

/// Replace a StackProbe inline-stub with the actual probe code inline.
  void inlineStackProbe(MachineFunction &MF,
                        MachineBasicBlock &PrologMBB) const override;

void
  emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
                            MachineBasicBlock::iterator MBBI) const override;

void emitCalleeSavedFrameMoves(MachineBasicBlock &MBB,
                                 MachineBasicBlock::iterator MBBI,
                                 const DebugLoc &DL,
                                 bool IsPrologue) const override;

/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
  /// the function.
  void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
  void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;

void adjustForSegmentedStacks(MachineFunction &MF,
                                MachineBasicBlock &PrologueMBB) const override;

void adjustForHiPEPrologue(MachineFunction &MF,
                             MachineBasicBlock &PrologueMBB) const override;

void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
                            RegScavenger *RS = nullptr) const override;

bool
  assignCalleeSavedSpillSlots(MachineFunction &MF,
                              const TargetRegisterInfo *TRI,
                              std::vector<CalleeSavedInfo> &CSI) const override;

bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
                                 MachineBasicBlock::iterator MI,
                                 ArrayRef<CalleeSavedInfo> CSI,
                                 const TargetRegisterInfo *TRI) const override;

bool
  restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
                              MachineBasicBlock::iterator MI,
                              MutableArrayRef<CalleeSavedInfo> CSI,
                              const TargetRegisterInfo *TRI) const override;

bool hasFP(const MachineFunction &MF) const override;
  bool hasReservedCallFrame(const MachineFunction &MF) const override;
  bool canSimplifyCallFramePseudos(const MachineFunction &MF) const override;
  bool needsFrameIndexResolution(const MachineFunction &MF) const override;

int getFrameIndexReference(const MachineFunction &MF, int FI,
                             Register &FrameReg) const override;

int getWin64EHFrameIndexRef(const MachineFunction &MF, int FI,
                              Register &SPReg) const;
  int getFrameIndexReferenceSP(const MachineFunction &MF, int FI,
                               Register &SPReg, int Adjustment) const;
  int getFrameIndexReferencePreferSP(const MachineFunction &MF, int FI,
                                     Register &FrameReg,
                                     bool IgnoreSPUpdates) const override;

MachineBasicBlock::iterator
  eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
                                MachineBasicBlock::iterator MI) const override;

unsigned getWinEHParentFrameOffset(const MachineFunction &MF) const override;

void processFunctionBeforeFrameFinalized(MachineFunction &MF,
                                           RegScavenger *RS) const override;

void
  processFunctionBeforeFrameIndicesReplaced(MachineFunction &MF,
                                            RegScavenger *RS) const override;

/// Check the instruction before/after the passed instruction. If
  /// it is an ADD/SUB/LEA instruction it is deleted argument and the
  /// stack adjustment is returned as a positive value for ADD/LEA and
  /// a negative for SUB.
  int mergeSPUpdates(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
                     bool doMergeWithPrevious) const;

/// Emit a series of instructions to increment / decrement the stack
  /// pointer by a constant value.
  void emitSPUpdate(MachineBasicBlock &MBB, MachineBasicBlock::iterator &MBBI,
                    const DebugLoc &DL, int64_t NumBytes, bool InEpilogue) const;

/// Check that LEA can be used on SP in an epilogue sequence for \p MF.
  bool canUseLEAForSPInEpilogue(const MachineFunction &MF) const;

/// Check whether or not the given \p MBB can be used as a prologue
  /// for the target.
  /// The prologue will be inserted first in this basic block.
  /// This method is used by the shrink-wrapping pass to decide if
  /// \p MBB will be correctly handled by the target.
  /// As soon as the target enable shrink-wrapping without overriding
  /// this method, we assume that each basic block is a valid
  /// prologue.
  bool canUseAsPrologue(const MachineBasicBlock &MBB) const override;

/// Check whether or not the given \p MBB can be used as a epilogue
  /// for the target.
  /// The epilogue will be inserted before the first terminator of that block.
  /// This method is used by the shrink-wrapping pass to decide if
  /// \p MBB will be correctly handled by the target.
  bool canUseAsEpilogue(const MachineBasicBlock &MBB) const override;

/// Returns true if the target will correctly handle shrink wrapping.
  bool enableShrinkWrapping(const MachineFunction &MF) const override;

/// Order the symbols in the local stack.
  /// We want to place the local stack objects in some sort of sensible order.
  /// The heuristic we use is to try and pack them according to static number
  /// of uses and size in order to minimize code size.
  void orderFrameObjects(const MachineFunction &MF,
                         SmallVectorImpl<int> &ObjectsToAllocate) const override;

/// Wraps up getting a CFI index and building a MachineInstr for it.
  void BuildCFI(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
                const DebugLoc &DL, const MCCFIInstruction &CFIInst) const;

/// Sets up EBP and optionally ESI based on the incoming EBP value.  Only
  /// needed for 32-bit. Used in funclet prologues and at catchret destinations.
  MachineBasicBlock::iterator
  restoreWin32EHStackPointers(MachineBasicBlock &MBB,
                              MachineBasicBlock::iterator MBBI,
                              const DebugLoc &DL, bool RestoreSP = false) const;

void restoreWinEHStackPointersInParent(MachineFunction &MF) const;

int getInitialCFAOffset(const MachineFunction &MF) const override;

/// Return true if the function has a redzone (accessible bytes past the
  /// frame of the top of stack function) as part of it's ABI.
  bool has128ByteRedZone(const MachineFunction& MF) const;

private:
  uint64_t calculateMaxStackAlign(const MachineFunction &MF) const;

/// Emit target stack probe as a call to a helper function
  void emitStackProbeCall(MachineFunction &MF, MachineBasicBlock &MBB,
                          MachineBasicBlock::iterator MBBI, const DebugLoc &DL,
                          bool InProlog) const;

/// Emit target stack probe as an inline sequence.
  void emitStackProbeInline(MachineFunction &MF, MachineBasicBlock &MBB,
                            MachineBasicBlock::iterator MBBI,
                            const DebugLoc &DL, bool InProlog) const;
  void emitStackProbeInlineWindowsCoreCLR64(MachineFunction &MF,
                                            MachineBasicBlock &MBB,
                                            MachineBasicBlock::iterator MBBI,
                                            const DebugLoc &DL,
                                            bool InProlog) const;
  void emitStackProbeInlineGeneric(MachineFunction &MF, MachineBasicBlock &MBB,
                                   MachineBasicBlock::iterator MBBI,
                                   const DebugLoc &DL, bool InProlog) const;

void emitStackProbeInlineGenericBlock(MachineFunction &MF,
                                        MachineBasicBlock &MBB,
                                        MachineBasicBlock::iterator MBBI,
                                        const DebugLoc &DL, uint64_t Offset,
                                        uint64_t Align) const;

void emitStackProbeInlineGenericLoop(MachineFunction &MF,
                                       MachineBasicBlock &MBB,
                                       MachineBasicBlock::iterator MBBI,
                                       const DebugLoc &DL, uint64_t Offset,
                                       uint64_t Align) const;

/// Emit a stub to later inline the target stack probe.
  MachineInstr *emitStackProbeInlineStub(MachineFunction &MF,
                                         MachineBasicBlock &MBB,
                                         MachineBasicBlock::iterator MBBI,
                                         const DebugLoc &DL,
                                         bool InProlog) const;

/// Aligns the stack pointer by ANDing it with -MaxAlign.
  void BuildStackAlignAND(MachineBasicBlock &MBB,
                          MachineBasicBlock::iterator MBBI, const DebugLoc &DL,
                          unsigned Reg, uint64_t MaxAlign) const;

/// Make small positive stack adjustments using POPs.
  bool adjustStackWithPops(MachineBasicBlock &MBB,
                           MachineBasicBlock::iterator MBBI, const DebugLoc &DL,
                           int Offset) const;

/// Adjusts the stack pointer using LEA, SUB, or ADD.
  MachineInstrBuilder BuildStackAdjustment(MachineBasicBlock &MBB,
                                           MachineBasicBlock::iterator MBBI,
                                           const DebugLoc &DL, int64_t Offset,
                                           bool InEpilogue) const;

unsigned getPSPSlotOffsetFromSP(const MachineFunction &MF) const;

unsigned getWinEHFuncletFrameSize(const MachineFunction &MF) const;

/// Materialize the catchret target MBB in RAX.
  void emitCatchRetReturnValue(MachineBasicBlock &MBB,
                               MachineBasicBlock::iterator MBBI,
                               MachineInstr *CatchRet) const;
};

} // End llvm namespace

#endif

003 File Manager

Editing: X86FrameLowering.h

Upload File

Create Folder