#include "X86FrameLowering.h"#include "MCTargetDesc/X86MCTargetDesc.h"#include "X86InstrBuilder.h"#include "X86InstrInfo.h"#include "X86MachineFunctionInfo.h"#include "X86Subtarget.h"#include "X86TargetMachine.h"#include "llvm/ADT/Statistic.h"#include "llvm/CodeGen/LivePhysRegs.h"#include "llvm/CodeGen/MachineFrameInfo.h"#include "llvm/CodeGen/MachineFunction.h"#include "llvm/CodeGen/MachineInstrBuilder.h"#include "llvm/CodeGen/MachineModuleInfo.h"#include "llvm/CodeGen/MachineRegisterInfo.h"#include "llvm/CodeGen/RegisterScavenging.h"#include "llvm/CodeGen/WinEHFuncInfo.h"#include "llvm/IR/DataLayout.h"#include "llvm/IR/EHPersonalities.h"#include "llvm/IR/Function.h"#include "llvm/IR/Module.h"#include "llvm/MC/MCAsmInfo.h"#include "llvm/MC/MCObjectFileInfo.h"#include "llvm/MC/MCSymbol.h"#include "llvm/Support/LEB128.h"#include "llvm/Target/TargetOptions.h"#include <cstdlib>Go to the source code of this file.
Macros | |
| #define | DEBUG_TYPE "x86-fl" |
Functions | |
| STATISTIC (NumFrameLoopProbe, "Number of loop stack probes used in prologue") | |
| STATISTIC (NumFrameExtraProbe, "Number of extra stack probes generated in prologue") | |
| STATISTIC (NumFunctionUsingPush2Pop2, "Number of functions using push2/pop2") | |
| static const TargetRegisterClass * | getCalleeSavedSpillRC (MCRegister Reg, const X86Subtarget &STI, const TargetRegisterInfo &TRI) |
| static unsigned | getSUBriOpcode (bool IsLP64) |
| static unsigned | getADDriOpcode (bool IsLP64) |
| static unsigned | getSUBrrOpcode (bool IsLP64) |
| static unsigned | getADDrrOpcode (bool IsLP64) |
| static unsigned | getANDriOpcode (bool IsLP64, int64_t Imm) |
| static unsigned | getLEArOpcode (bool IsLP64) |
| static unsigned | getMOVriOpcode (bool Use64BitReg, int64_t Imm) |
| static unsigned | getPUSHOpcode (const X86Subtarget &ST) |
| static unsigned | getPOPOpcode (const X86Subtarget &ST) |
| static unsigned | getPUSH2Opcode (const X86Subtarget &ST) |
| static unsigned | getPOP2Opcode (const X86Subtarget &ST) |
| static bool | isEAXLiveIn (MachineBasicBlock &MBB) |
| static bool | flagsNeedToBePreservedBeforeTheTerminators (const MachineBasicBlock &MBB) |
| Check if the flags need to be preserved before the terminators. | |
| static unsigned | calculateSetFPREG (uint64_t SPAdjust) |
| static bool | isOpcodeRep (unsigned Opcode) |
| Return true if an opcode is part of the REP group of instructions. | |
| static bool | isFuncletReturnInstr (MachineInstr &MI) |
| static bool | isTailCallOpcode (unsigned Opc) |
| static bool | HasNestArgument (const MachineFunction *MF) |
| static unsigned | GetScratchRegister (bool Is64Bit, bool IsLP64, const MachineFunction &MF, bool Primary) |
| GetScratchRegister - Get a temp register for performing work in the segmented stack and the Erlang/HiPE stack prologue. | |
| static unsigned | getHiPELiteral (NamedMDNode *HiPELiteralsMD, const StringRef LiteralName) |
| Lookup an ERTS parameter in the !hipe.literals named metadata node. | |
| static bool | blockEndIsUnreachable (const MachineBasicBlock &MBB, MachineBasicBlock::const_iterator MBBI) |
| static int | computeFPBPAlignmentGap (MachineFunction &MF, const TargetRegisterClass *RC, unsigned NumSpilledRegs) |
| static bool | isFPBPAccess (const MachineInstr &MI, Register FP, Register BP, const TargetRegisterInfo *TRI, bool &AccessFP, bool &AccessBP) |
| static bool | isInvoke (const MachineInstr &MI, bool InsideEHLabels) |
Variables | |
| constexpr uint64_t | MaxSPChunk = (1ULL << 31) - 1 |
| static const uint64_t | kSplitStackAvailable = 256 |
Macro Definition Documentation
◆ DEBUG_TYPE
| #define DEBUG_TYPE "x86-fl" |
Definition at line 40 of file X86FrameLowering.cpp.
Function Documentation
◆ blockEndIsUnreachable()
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static |
Definition at line 3553 of file X86FrameLowering.cpp.
References llvm::all_of(), MBB, MBBI, and MI.
Referenced by llvm::X86FrameLowering::eliminateCallFramePseudoInstr().
◆ calculateSetFPREG()
Definition at line 1278 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitEpilogue(), llvm::X86FrameLowering::emitPrologue(), and llvm::X86FrameLowering::getFrameIndexReference().
◆ computeFPBPAlignmentGap()
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static |
Definition at line 4315 of file X86FrameLowering.cpp.
References llvm::alignTo(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::TargetFrameLowering::getStackAlign(), llvm::MachineFunction::getSubtarget(), and TRI.
◆ flagsNeedToBePreservedBeforeTheTerminators()
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static |
Check if the flags need to be preserved before the terminators.
This would be the case, if the eflags is live-in of the region composed by the terminators or live-out of that region, without being defined by a terminator.
Definition at line 202 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::canUseAsEpilogue().
◆ getADDriOpcode()
Definition at line 122 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::restoreWin32EHStackPointers().
◆ getADDrrOpcode()
Definition at line 130 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitSPUpdate().
◆ getANDriOpcode()
Definition at line 134 of file X86FrameLowering.cpp.
◆ getCalleeSavedSpillRC()
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static |
Definition at line 50 of file X86FrameLowering.cpp.
References contains(), Reg, and TRI.
Referenced by llvm::X86FrameLowering::assignCalleeSavedSpillSlots(), llvm::X86FrameLowering::restoreCalleeSavedRegisters(), and llvm::X86FrameLowering::spillCalleeSavedRegisters().
◆ getHiPELiteral()
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static |
Lookup an ERTS parameter in the !hipe.literals named metadata node.
HiPE provides Erlang Runtime System-internal parameters, such as PCB offsets to fields it needs, through a named metadata node "hipe.literals" containing name-value pairs.
Definition at line 3531 of file X86FrameLowering.cpp.
References llvm::dyn_cast(), llvm::dyn_cast_or_null(), llvm::NamedMDNode::getNumOperands(), llvm::NamedMDNode::getOperand(), llvm::MDString::getString(), llvm::ValueAsMetadata::getValue(), llvm::ConstantInt::getZExtValue(), and llvm::report_fatal_error().
Referenced by llvm::X86FrameLowering::adjustForHiPEPrologue().
◆ getLEArOpcode()
Definition at line 138 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitEpilogue().
◆ getMOVriOpcode()
Definition at line 142 of file X86FrameLowering.cpp.
References llvm::isInt(), and llvm::isUInt().
Referenced by llvm::X86FrameLowering::adjustForSegmentedStacks(), llvm::X86FrameLowering::emitPrologue(), and llvm::X86FrameLowering::emitSPUpdate().
◆ getPOP2Opcode()
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static |
Definition at line 181 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::restoreCalleeSavedRegisters().
◆ getPOPOpcode()
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static |
Definition at line 174 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitEpilogue(), and llvm::X86FrameLowering::restoreCalleeSavedRegisters().
◆ getPUSH2Opcode()
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static |
Definition at line 178 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::spillCalleeSavedRegisters().
◆ getPUSHOpcode()
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static |
Definition at line 170 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitPrologue(), and llvm::X86FrameLowering::spillCalleeSavedRegisters().
◆ GetScratchRegister()
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static |
GetScratchRegister - Get a temp register for performing work in the segmented stack and the Erlang/HiPE stack prologue.
Depending on platform and the properties of the function either one or two registers will be needed. Set primary to true for the first register, false for the second.
Definition at line 3232 of file X86FrameLowering.cpp.
References llvm::CallingConv::Fast, llvm::Function::getCallingConv(), llvm::MachineFunction::getFunction(), HasNestArgument(), llvm::CallingConv::HiPE, llvm::report_fatal_error(), llvm::CallingConv::Tail, and llvm::CallingConv::X86_FastCall.
Referenced by llvm::X86FrameLowering::adjustForHiPEPrologue(), and llvm::X86FrameLowering::adjustForSegmentedStacks().
◆ getSUBriOpcode()
Definition at line 118 of file X86FrameLowering.cpp.
◆ getSUBrrOpcode()
Definition at line 126 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitSPUpdate().
◆ HasNestArgument()
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static |
Definition at line 3218 of file X86FrameLowering.cpp.
References E(), F, llvm::MachineFunction::getFunction(), and I.
Referenced by llvm::X86FrameLowering::adjustForSegmentedStacks(), and GetScratchRegister().
◆ isEAXLiveIn()
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static |
Definition at line 185 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitPrologue(), and llvm::X86FrameLowering::emitSPUpdate().
◆ isFPBPAccess()
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static |
Definition at line 4477 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::spillFPBP().
◆ isFuncletReturnInstr()
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static |
Definition at line 2341 of file X86FrameLowering.cpp.
References llvm_unreachable, and MI.
◆ isInvoke()
|
static |
Definition at line 4497 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::spillFPBP().
◆ isOpcodeRep()
Return true if an opcode is part of the REP group of instructions.
Definition at line 1483 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitPrologue().
◆ isTailCallOpcode()
Definition at line 2407 of file X86FrameLowering.cpp.
References Opc.
◆ STATISTIC() [1/3]
| STATISTIC | ( | NumFrameExtraProbe | , |
| "Number of extra stack probes generated in prologue" | ) |
◆ STATISTIC() [2/3]
| STATISTIC | ( | NumFrameLoopProbe | , |
| "Number of loop stack probes used in prologue" | ) |
◆ STATISTIC() [3/3]
| STATISTIC | ( | NumFunctionUsingPush2Pop2 | , |
| "Number of functions using push2/pop2" | ) |
Variable Documentation
◆ kSplitStackAvailable
Definition at line 3268 of file X86FrameLowering.cpp.
◆ MaxSPChunk
|
constexpr |
Definition at line 236 of file X86FrameLowering.cpp.
Referenced by llvm::X86FrameLowering::emitSPUpdate().
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