#include <ARMFrameLowering.h>
Detailed Description
Definition at line 22 of file ARMFrameLowering.h.
Constructor & Destructor Documentation
| ARMFrameLowering::ARMFrameLowering | ( | const ARMSubtarget & | sti | ) | [explicit] |
Definition at line 42 of file ARMFrameLowering.cpp.
Member Function Documentation
| void ARMFrameLowering::adjustForSegmentedStacks | ( | MachineFunction & | MF | ) | const [override, virtual] |
Adjust the prologue to have the function use segmented stacks. This works by adding a check even before the "normal" function prologue.
Reimplemented from llvm::TargetFrameLowering.
Definition at line 1737 of file ARMFrameLowering.cpp.
References llvm::AddDefaultCC(), llvm::AddDefaultPred(), llvm::MachineInstrBuilder::addExternalSymbol(), llvm::MachineModuleInfo::addFrameInst(), llvm::MachineInstrBuilder::addImm(), llvm::MachineBasicBlock::addLiveIn(), llvm::MachineInstrBuilder::addReg(), llvm::MachineBasicBlock::addSuccessor(), alignToARMConstant(), llvm::XCoreISD::BL, llvm::BuildMI(), llvm::TargetOpcode::CFI_INSTRUCTION, llvm::ARMConstantPoolSymbol::Create(), llvm::MCCFIInstruction::createDefCfaOffset(), llvm::MachineFunction::CreateMachineBasicBlock(), llvm::MCCFIInstruction::createOffset(), llvm::ARMFunctionInfo::createPICLabelUId(), llvm::MCCFIInstruction::createSameValue(), llvm::RegState::Define, llvm::MachineFunction::front(), llvm::MachineFunction::getAlignment(), llvm::ARMFunctionInfo::getArgumentStackSize(), llvm::MachineFunction::getConstantPool(), llvm::MachineConstantPool::getConstantPoolIndex(), llvm::Function::getContext(), llvm::MachineModuleInfo::getContext(), llvm::MCRegisterInfo::getDwarfRegNum(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineFunction::getMMI(), llvm::MCContext::getRegisterInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::TargetMachine::getSubtarget(), llvm::MachineFunction::getSubtarget(), llvm::MachineFunction::getTarget(), llvm::ARMSubtarget::isTargetAndroid(), llvm::ARMSubtarget::isTargetLinux(), llvm::ARMSubtarget::isThumb(), llvm::ARMSubtarget::isThumb1Only(), llvm::Function::isVarArg(), kSplitStackAvailable, llvm::MachineBasicBlock::livein_begin(), llvm::MachineBasicBlock::livein_end(), llvm::ARMCC::LO, llvm::MachineFunction::push_front(), llvm::report_fatal_error(), llvm::AArch64DB::ST, and llvm::MachineFunction::verify().
| bool ARMFrameLowering::canSimplifyCallFramePseudos | ( | const MachineFunction & | MF | ) | const [override, virtual] |
canSimplifyCallFramePseudos - If there is a reserved call frame, the call frame pseudos can be simplified. Unlike most targets, having a FP is not sufficient here since we still may reference some objects via SP even when FP is available in Thumb2 mode.
Reimplemented from llvm::TargetFrameLowering.
Definition at line 88 of file ARMFrameLowering.cpp.
References llvm::MachineFunction::getFrameInfo(), hasReservedCallFrame(), and llvm::MachineFrameInfo::hasVarSizedObjects().
Referenced by processFunctionBeforeCalleeSavedScan().
| void ARMFrameLowering::emitEpilogue | ( | MachineFunction & | MF, |
| MachineBasicBlock & | MBB | ||
| ) | const [override, virtual] |
Implements llvm::TargetFrameLowering.
Reimplemented in llvm::Thumb1FrameLowering.
Definition at line 570 of file ARMFrameLowering.cpp.
References llvm::AddDefaultPred(), llvm::MachineInstrBuilder::addExternalSymbol(), llvm::MachineInstrBuilder::addGlobalAddress(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstr::addOperand(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, Align(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::emitARMRegPlusImmediate(), emitSPUpdate(), llvm::emitT2RegPlusImmediate(), llvm::MachineBasicBlock::erase(), FramePtr, llvm::ARMFunctionInfo::getArgRegsSaveSize(), llvm::Function::getCallingConv(), llvm::ARMFunctionInfo::getDPRCalleeSavedAreaSize(), llvm::MachineFunction::getFrameInfo(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::ARMFunctionInfo::getFramePtrSpillOffset(), llvm::MachineFunction::getFunction(), llvm::MachineOperand::getGlobal(), llvm::ARMFunctionInfo::getGPRCalleeSavedArea1Size(), llvm::ARMFunctionInfo::getGPRCalleeSavedArea2Size(), llvm::MachineFunction::getInfo(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineBasicBlock::getLastNonDebugInstr(), llvm::MachineOperand::getOffset(), llvm::MachineOperand::getReg(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), llvm::TargetMachine::getSubtargetImpl(), llvm::MachineOperand::getSymbolName(), llvm::MachineFunction::getTarget(), llvm::MachineOperand::getTargetFlags(), llvm::CallingConv::GHC, llvm::ARMFunctionInfo::hasStackFrame(), isCSRestore(), llvm::MachineOperand::isGlobal(), llvm::MachineRegisterInfo::isPhysRegUsed(), llvm::MachineOperand::isSymbol(), llvm::ARMSubtarget::isTargetMachO(), llvm::ARMSubtarget::isThumb(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumbFunction(), llvm::RegState::Kill, llvm::ARMFunctionInfo::shouldRestoreSPFromFP(), STI, TII, and llvm::tryFoldSPUpdateIntoPushPop().
| void ARMFrameLowering::emitPrologue | ( | MachineFunction & | MF | ) | const [override, virtual] |
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
Implements llvm::TargetFrameLowering.
Reimplemented in llvm::Thumb1FrameLowering.
Definition at line 157 of file ARMFrameLowering.cpp.
References llvm::AddDefaultCC(), llvm::AddDefaultPred(), llvm::MachineInstrBuilder::addExternalSymbol(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::AArch64CC::AL, Align(), llvm::MachineBasicBlock::begin(), llvm::BuildMI(), llvm::TargetOpcode::CFI_INSTRUCTION, llvm::MCCFIInstruction::createDefCfa(), llvm::MCCFIInstruction::createDefCfaOffset(), llvm::MCCFIInstruction::createDefCfaRegister(), llvm::MCCFIInstruction::createOffset(), llvm::CodeModel::Default, llvm::RegState::Define, emitRegPlusImmediate(), emitSPUpdate(), llvm::MachineBasicBlock::end(), FramePtr, llvm::MachineInstr::FrameSetup, llvm::MachineFunction::front(), llvm::ARMFunctionInfo::getArgRegsSaveSize(), llvm::ARMBaseRegisterInfo::getBaseRegister(), llvm::MachineFrameInfo::getCalleeSavedInfo(), llvm::Function::getCallingConv(), llvm::TargetMachine::getCodeModel(), llvm::MCRegisterInfo::getDwarfRegNum(), llvm::MachineFunction::getFrameInfo(), llvm::TargetSubtargetInfo::getFrameLowering(), llvm::ARMFunctionInfo::getFramePtrSpillOffset(), llvm::ARMBaseRegisterInfo::getFrameRegister(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineFrameInfo::getMaxAlignment(), llvm::MachineFunction::getMMI(), llvm::ARMFunctionInfo::getNumAlignedDPRCS2Regs(), llvm::MachineFrameInfo::getObjectOffset(), llvm::MachineFrameInfo::getOffsetAdjustment(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MCContext::getRegisterInfo(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFrameInfo::getStackSize(), llvm::TargetMachine::getSubtargetImpl(), llvm::MachineFunction::getTarget(), llvm::CallingConv::GHC, llvm::ARMBaseRegisterInfo::hasBasePointer(), hasFP(), llvm::ARMFunctionInfo::hasStackFrame(), llvm::MachineFrameInfo::hasVarSizedObjects(), llvm::RegState::Implicit, llvm::ARMSubtarget::isTargetDarwin(), llvm::ARMSubtarget::isTargetELF(), llvm::ARMSubtarget::isTargetWindows(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumbFunction(), llvm::CodeModel::JITDefault, llvm::CodeModel::Kernel, llvm::RegState::Kill, llvm::CodeModel::Large, llvm::CodeModel::Medium, llvm::ARMBaseRegisterInfo::needsStackRealignment(), llvm::ARMFunctionInfo::setDPRCalleeSavedAreaOffset(), llvm::ARMFunctionInfo::setDPRCalleeSavedAreaSize(), llvm::ARMFunctionInfo::setFramePtrSpillOffset(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea1Offset(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea1Size(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea2Offset(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea2Size(), llvm::MachineInstrBuilder::setMIFlags(), llvm::MachineFrameInfo::setOffsetAdjustment(), llvm::ARMFunctionInfo::setShouldRestoreSPFromFP(), sizeOfSPAdjustment(), skipAlignedDPRCS2Spills(), llvm::CodeModel::Small, STI, TII, llvm::SystemZISD::TM, llvm::tryFoldSPUpdateIntoPushPop(), and WindowsRequiresStackProbe().
| int ARMFrameLowering::getFrameIndexOffset | ( | const MachineFunction & | MF, |
| int | FI | ||
| ) | const [override, virtual] |
getFrameIndexOffset - Returns the displacement from the frame register to the stack frame of the specified index.
getFrameIndexOffset - Returns the displacement from the frame register to the stack frame of the specified index. This is the default implementation which is overridden for some targets.
Reimplemented from llvm::TargetFrameLowering.
Definition at line 795 of file ARMFrameLowering.cpp.
References getFrameIndexReference().
| int ARMFrameLowering::getFrameIndexReference | ( | const MachineFunction & | MF, |
| int | FI, | ||
| unsigned & | FrameReg | ||
| ) | const [override, virtual] |
getFrameIndexReference - Provide a base+offset reference to an FI slot for debug info. It's the same as what we use for resolving the code-gen references for now. FIXME: This can go wrong when references are SP-relative and simple call frames aren't used.
Reimplemented from llvm::TargetFrameLowering.
Definition at line 714 of file ARMFrameLowering.cpp.
References ResolveFrameIndexReference().
Referenced by getFrameIndexOffset().
| bool ARMFrameLowering::hasFP | ( | const MachineFunction & | MF | ) | const [override, virtual] |
hasFP - Return true if the specified function should have a dedicated frame pointer register. This is true if the function has variable sized allocas or if frame pointer elimination is disabled.
Implements llvm::TargetFrameLowering.
Definition at line 49 of file ARMFrameLowering.cpp.
References llvm::TargetOptions::DisableFramePointerElim(), llvm::MachineFunction::getFrameInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFunction::getSubtarget(), llvm::MachineFunction::getTarget(), llvm::MachineFrameInfo::hasCalls(), llvm::MachineFrameInfo::hasVarSizedObjects(), llvm::MachineFrameInfo::isFrameAddressTaken(), llvm::ARMSubtarget::isTargetIOS(), llvm::TargetRegisterInfo::needsStackRealignment(), llvm::TargetMachine::Options, and STI.
Referenced by llvm::Thumb1FrameLowering::emitPrologue(), emitPrologue(), processFunctionBeforeCalleeSavedScan(), and ResolveFrameIndexReference().
| bool ARMFrameLowering::hasReservedCallFrame | ( | const MachineFunction & | MF | ) | const [override, virtual] |
hasReservedCallFrame - Under normal circumstances, when a frame pointer is not required, we reserve argument space for call sites in the function immediately on entry to the current function. This eliminates the need for add/sub sp brackets around call sites. Returns true if the call frame is included as part of the stack frame.
Reimplemented from llvm::TargetFrameLowering.
Reimplemented in llvm::Thumb1FrameLowering.
Definition at line 70 of file ARMFrameLowering.cpp.
References llvm::MachineFunction::getFrameInfo(), llvm::MachineFrameInfo::getMaxCallFrameSize(), and llvm::MachineFrameInfo::hasVarSizedObjects().
Referenced by canSimplifyCallFramePseudos(), llvm::ARMBaseRegisterInfo::eliminateFrameIndex(), and ResolveFrameIndexReference().
| void ARMFrameLowering::processFunctionBeforeCalleeSavedScan | ( | MachineFunction & | MF, |
| RegScavenger * | RS | ||
| ) | const [override, virtual] |
processFunctionBeforeCalleeSavedScan - This method is called immediately before PrologEpilogInserter scans the physical registers used to determine what callee saved registers should be spilled. This method is optional.
Reimplemented from llvm::TargetFrameLowering.
Definition at line 1382 of file ARMFrameLowering.cpp.
References llvm::RegScavenger::addScavengingFrameIndex(), llvm::SmallVectorTemplateCommon< T, typename >::back(), llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::ARMBaseRegisterInfo::cannotEliminateFrame(), canSimplifyCallFramePseudos(), checkNumAlignedDPRCS2Regs(), contains(), llvm::SmallVectorBase::empty(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::SmallVectorImpl< T >::erase(), estimateRSStackSizeLimit(), llvm::HexagonII::FPPos, FramePtr, llvm::SmallVectorTemplateCommon< T, typename >::front(), llvm::TargetRegisterClass::getAlignment(), llvm::ARMFunctionInfo::getArgRegsSaveSize(), llvm::ARMBaseRegisterInfo::getBaseRegister(), llvm::ARMBaseRegisterInfo::getCalleeSavedRegs(), llvm::MachineFunction::getFrameInfo(), llvm::ARMBaseRegisterInfo::getFrameRegister(), GetFunctionSizeInBytes(), llvm::MachineFunction::getInfo(), llvm::TargetSubtargetInfo::getInstrInfo(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::TargetRegisterClass::getSize(), llvm::TargetFrameLowering::getStackAlignment(), llvm::MachineFunction::getSubtarget(), llvm::ARMBaseRegisterInfo::hasBasePointer(), hasFP(), llvm::ARMFunctionInfo::hasStackFrame(), llvm::isARMLowRegister(), llvm::MachineRegisterInfo::isPhysRegUsed(), llvm::MachineRegisterInfo::isReserved(), llvm::ARMSubtarget::isTargetDarwin(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumb2Function(), llvm::ARMBaseRegisterInfo::needsStackRealignment(), llvm::SmallVectorTemplateBase< T, isPodLike >::pop_back(), llvm::SmallVectorTemplateBase< T, isPodLike >::push_back(), llvm::SmallVectorTemplateBase< T, isPodLike< T >::value >::push_back(), llvm::ARMFunctionInfo::setHasStackFrame(), llvm::ARMFunctionInfo::setLRIsSpilledForFarJump(), llvm::MachineRegisterInfo::setPhysRegUsed(), llvm::SmallVectorTemplateCommon< T, typename >::size(), llvm::SmallVectorTemplateCommon< T >::size(), and STI.
| int ARMFrameLowering::ResolveFrameIndexReference | ( | const MachineFunction & | MF, |
| int | FI, | ||
| unsigned & | FrameReg, | ||
| int | SPAdj | ||
| ) | const |
Definition at line 720 of file ARMFrameLowering.cpp.
References llvm::ARMBaseRegisterInfo::getBaseRegister(), llvm::MachineFunction::getFrameInfo(), llvm::ARMFunctionInfo::getFramePtrSpillOffset(), llvm::ARMBaseRegisterInfo::getFrameRegister(), llvm::MachineFunction::getInfo(), llvm::MachineFrameInfo::getObjectOffset(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), llvm::ARMBaseRegisterInfo::hasBasePointer(), hasFP(), hasReservedCallFrame(), llvm::ARMFunctionInfo::hasStackFrame(), llvm::MachineFrameInfo::isFixedObjectIndex(), llvm::ARMFunctionInfo::isThumb2Function(), and llvm::ARMBaseRegisterInfo::needsStackRealignment().
Referenced by llvm::ARMBaseRegisterInfo::eliminateFrameIndex(), and getFrameIndexReference().
| bool ARMFrameLowering::restoreCalleeSavedRegisters | ( | MachineBasicBlock & | MBB, |
| MachineBasicBlock::iterator | MI, | ||
| const std::vector< CalleeSavedInfo > & | CSI, | ||
| const TargetRegisterInfo * | TRI | ||
| ) | const [override, virtual] |
restoreCalleeSavedRegisters - Issues instruction(s) to restore all callee saved registers and returns true if it isn't possible / profitable to do so by issuing a series of load instructions via loadRegToStackSlot(). Returns false otherwise.
Reimplemented from llvm::TargetFrameLowering.
Reimplemented in llvm::Thumb1FrameLowering.
Definition at line 1234 of file ARMFrameLowering.cpp.
References emitAlignedDPRCS2Restores(), llvm::ARMFunctionInfo::getArgRegsSaveSize(), llvm::MachineFunction::getInfo(), llvm::ARMFunctionInfo::getNumAlignedDPRCS2Regs(), llvm::MachineBasicBlock::getParent(), llvm::isARMArea1Register(), llvm::isARMArea2Register(), llvm::isARMArea3Register(), and llvm::ARMFunctionInfo::isThumbFunction().
| bool ARMFrameLowering::spillCalleeSavedRegisters | ( | MachineBasicBlock & | MBB, |
| MachineBasicBlock::iterator | MI, | ||
| const std::vector< CalleeSavedInfo > & | CSI, | ||
| const TargetRegisterInfo * | TRI | ||
| ) | const [override, virtual] |
spillCalleeSavedRegisters - Issues instruction(s) to spill all callee saved registers and returns true if it isn't possible / profitable to do so by issuing a series of store instructions via storeRegToStackSlot(). Returns false otherwise.
Reimplemented from llvm::TargetFrameLowering.
Reimplemented in llvm::Thumb1FrameLowering.
Definition at line 1203 of file ARMFrameLowering.cpp.
References emitAlignedDPRCS2Spills(), llvm::MachineInstr::FrameSetup, llvm::MachineFunction::getInfo(), llvm::ARMFunctionInfo::getNumAlignedDPRCS2Regs(), llvm::MachineBasicBlock::getParent(), llvm::isARMArea1Register(), llvm::isARMArea2Register(), llvm::isARMArea3Register(), and llvm::ARMFunctionInfo::isThumbFunction().
Member Data Documentation
const ARMSubtarget& llvm::ARMFrameLowering::STI [protected] |
Definition at line 24 of file ARMFrameLowering.h.
Referenced by llvm::Thumb1FrameLowering::emitEpilogue(), emitEpilogue(), llvm::Thumb1FrameLowering::emitPrologue(), emitPrologue(), hasFP(), processFunctionBeforeCalleeSavedScan(), and llvm::Thumb1FrameLowering::restoreCalleeSavedRegisters().
The documentation for this class was generated from the following files:
1.7.6.1