LLVM: llvm::ARMFrameLowering Class Reference (original) (raw)
#include "[Target/ARM/ARMFrameLowering.h](ARMFrameLowering%5F8h%5Fsource.html)"
| Public Member Functions | |
|---|---|
| ARMFrameLowering (const ARMSubtarget &sti) | |
| void | emitPrologue (MachineFunction &MF, MachineBasicBlock &MBB) const override |
| emitProlog/emitEpilog - These methods insert prolog and epilog code into the function. | |
| void | emitEpilogue (MachineFunction &MF, MachineBasicBlock &MBB) const override |
| bool | spillCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, ArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override |
| 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(). | |
| bool | restoreCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, MutableArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const override |
| 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(). | |
| bool | keepFramePointer (const MachineFunction &MF) const |
| bool | enableCalleeSaveSkip (const MachineFunction &MF) const override |
| Returns true if the target can safely skip saving callee-saved registers for noreturn nounwind functions. | |
| bool | isFPReserved (const MachineFunction &MF) const |
| isFPReserved - Return true if the frame pointer register should be considered a reserved register on the scope of the specified function. | |
| bool | requiresAAPCSFrameRecord (const MachineFunction &MF) const |
| bool | hasReservedCallFrame (const MachineFunction &MF) const override |
| 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. | |
| bool | canSimplifyCallFramePseudos (const MachineFunction &MF) const override |
| canSimplifyCallFramePseudos - If there is a reserved call frame, the call frame pseudos can be simplified. | |
| StackOffset | getFrameIndexReference (const MachineFunction &MF, int FI, Register &FrameReg) const override |
| getFrameIndexReference - Provide a base+offset reference to an FI slot for debug info. | |
| int | ResolveFrameIndexReference (const MachineFunction &MF, int FI, Register &FrameReg, int SPAdj) const |
| void | getCalleeSaves (const MachineFunction &MF, BitVector &SavedRegs) const override |
| Returns the callee-saved registers as computed by determineCalleeSaves in the BitVector SavedRegs. | |
| void | determineCalleeSaves (MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS) const override |
| This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() should actually get saved. | |
| void | processFunctionBeforeFrameFinalized (MachineFunction &MF, RegScavenger *RS=nullptr) const override |
| processFunctionBeforeFrameFinalized - This method is called immediately before the specified function's frame layout (MF.getFrameInfo()) is finalized. | |
| void | adjustForSegmentedStacks (MachineFunction &MF, MachineBasicBlock &MBB) const override |
| Adjust the prologue to have the function use segmented stacks. | |
| bool | enableShrinkWrapping (const MachineFunction &MF) const override |
| Returns true if the target will correctly handle shrink wrapping. | |
| bool | isProfitableForNoCSROpt (const Function &F) const override |
| Check if the no-CSR optimisation is profitable for the given function. | |
| bool | assignCalleeSavedSpillSlots (MachineFunction &MF, const TargetRegisterInfo *TRI, std::vector< CalleeSavedInfo > &CSI) const override |
| assignCalleeSavedSpillSlots - Allows target to override spill slot assignment logic. | |
| const SpillSlot * | getCalleeSavedSpillSlots (unsigned &NumEntries) const override |
| getCalleeSavedSpillSlots - This method returns a pointer to an array of pairs, that contains an entry for each callee saved register that must be spilled to a particular stack location if it is spilled. | |
| Public Member Functions inherited from llvm::TargetFrameLowering | |
| TargetFrameLowering (StackDirection D, Align StackAl, int LAO, Align TransAl=Align(1), bool StackReal=true) | |
| virtual | ~TargetFrameLowering () |
| StackDirection | getStackGrowthDirection () const |
| getStackGrowthDirection - Return the direction the stack grows | |
| unsigned | getStackAlignment () const |
| getStackAlignment - This method returns the number of bytes to which the stack pointer must be aligned on entry to a function. | |
| Align | getStackAlign () const |
| getStackAlignment - This method returns the number of bytes to which the stack pointer must be aligned on entry to a function. | |
| virtual uint64_t | getStackThreshold () const |
| getStackThreshold - Return the maximum stack size | |
| int | alignSPAdjust (int SPAdj) const |
| alignSPAdjust - This method aligns the stack adjustment to the correct alignment. | |
| Align | getTransientStackAlign () const |
| getTransientStackAlignment - This method returns the number of bytes to which the stack pointer must be aligned at all times, even between calls. | |
| bool | isStackRealignable () const |
| isStackRealignable - This method returns whether the stack can be realigned. | |
| virtual bool | isStackIdSafeForLocalArea (unsigned StackId) const |
| This method returns whether or not it is safe for an object with the given stack id to be bundled into the local area. | |
| int | getOffsetOfLocalArea () const |
| getOffsetOfLocalArea - This method returns the offset of the local area from the stack pointer on entrance to a function. | |
| virtual bool | allocateScavengingFrameIndexesNearIncomingSP (const MachineFunction &MF) const |
| Control the placement of special register scavenging spill slots when allocating a stack frame. | |
| virtual bool | targetHandlesStackFrameRounding () const |
| targetHandlesStackFrameRounding - Returns true if the target is responsible for rounding up the stack frame (probably at emitPrologue time). | |
| virtual bool | enableStackSlotScavenging (const MachineFunction &MF) const |
| Returns true if the stack slot holes in the fixed and callee-save stack area should be used when allocating other stack locations to reduce stack size. | |
| virtual void | emitZeroCallUsedRegs (BitVector RegsToZero, MachineBasicBlock &MBB) const |
| emitZeroCallUsedRegs - Zeros out call used registers. | |
| virtual void | emitCalleeSavedFrameMovesFullCFA (MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI) const |
| With basic block sections, emit callee saved frame moves for basic blocks that are in a different section. | |
| virtual bool | enableCFIFixup (const MachineFunction &MF) const |
| Returns true if we may need to fix the unwind information for the function. | |
| virtual bool | enableFullCFIFixup (const MachineFunction &MF) const |
| enableFullCFIFixup - Returns true if we may need to fix the unwind information such that it is accurate for every instruction in the function (e.g. | |
| virtual void | resetCFIToInitialState (MachineBasicBlock &MBB) const |
| Emit CFI instructions that recreate the state of the unwind information upon function entry. | |
| virtual void | inlineStackProbe (MachineFunction &MF, MachineBasicBlock &PrologueMBB) const |
| Replace a StackProbe stub (if any) with the actual probe code inline. | |
| virtual bool | stackProbeFunctionModifiesSP () const |
| Does the stack probe function call return with a modified stack pointer? | |
| virtual void | adjustForHiPEPrologue (MachineFunction &MF, MachineBasicBlock &PrologueMBB) const |
| Adjust the prologue to add Erlang Run-Time System (ERTS) specific code in the assembly prologue to explicitly handle the stack. | |
| void | spillCalleeSavedRegister (MachineBasicBlock &SaveBlock, MachineBasicBlock::iterator MI, const CalleeSavedInfo &CS, const TargetInstrInfo *TII, const TargetRegisterInfo *TRI) const |
| spillCalleeSavedRegister - Default implementation for spilling a single callee saved register. | |
| void | restoreCalleeSavedRegister (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, const CalleeSavedInfo &CS, const TargetInstrInfo *TII, const TargetRegisterInfo *TRI) const |
| bool | hasFP (const MachineFunction &MF) const |
| hasFP - Return true if the specified function should have a dedicated frame pointer register. | |
| virtual bool | needsFrameIndexResolution (const MachineFunction &MF) const |
| virtual StackOffset | getFrameIndexReferencePreferSP (const MachineFunction &MF, int FI, Register &FrameReg, bool IgnoreSPUpdates) const |
| Same as getFrameIndexReference, except that the stack pointer (as opposed to the frame pointer) will be the preferred value for FrameReg. | |
| virtual StackOffset | getNonLocalFrameIndexReference (const MachineFunction &MF, int FI) const |
| getNonLocalFrameIndexReference - This method returns the offset used to reference a frame index location. | |
| virtual StackOffset | getFrameIndexReferenceFromSP (const MachineFunction &MF, int FI) const |
| getFrameIndexReferenceFromSP - This method returns the offset from the stack pointer to the slot of the specified index. | |
| virtual void | processFunctionBeforeFrameIndicesReplaced (MachineFunction &MF, RegScavenger *RS=nullptr) const |
| processFunctionBeforeFrameIndicesReplaced - This method is called immediately before MO_FrameIndex operands are eliminated, but after the frame is finalized. | |
| virtual unsigned | getWinEHParentFrameOffset (const MachineFunction &MF) const |
| virtual void | orderFrameObjects (const MachineFunction &MF, SmallVectorImpl< int > &objectsToAllocate) const |
| Order the symbols in the local stack frame. | |
| virtual bool | canUseAsPrologue (const MachineBasicBlock &MBB) const |
| Check whether or not the given MBB can be used as a prologue for the target. | |
| virtual bool | canUseAsEpilogue (const MachineBasicBlock &MBB) const |
| Check whether or not the given MBB can be used as a epilogue for the target. | |
| virtual TargetStackID::Value | getStackIDForScalableVectors () const |
| Returns the StackID that scalable vectors should be associated with. | |
| virtual bool | isSupportedStackID (TargetStackID::Value ID) const |
| virtual int | getInitialCFAOffset (const MachineFunction &MF) const |
| Return initial CFA offset value i.e. | |
| virtual Register | getInitialCFARegister (const MachineFunction &MF) const |
| Return initial CFA register value i.e. | |
| virtual DwarfFrameBase | getDwarfFrameBase (const MachineFunction &MF) const |
| Return the frame base information to be encoded in the DWARF subprogram debug info. | |
| virtual void | spillFPBP (MachineFunction &MF) const |
| If frame pointer or base pointer is clobbered by an instruction, we should spill/restore it around that instruction. | |
| virtual void | emitRemarks (const MachineFunction &MF, MachineOptimizationRemarkEmitter *ORE) const |
| This method is called at the end of prolog/epilog code insertion, so targets can emit remarks based on the final frame layout. |
| Static Public Member Functions | |
|---|---|
| static void | updateLRRestored (MachineFunction &MF) |
| Update the IsRestored flag on LR if it is spilled, based on the return instructions. | |
| Static Public Member Functions inherited from llvm::TargetFrameLowering | |
| static bool | isSafeForNoCSROpt (const Function &F) |
| Check if given function is safe for not having callee saved registers. |
| Protected Member Functions | |
|---|---|
| bool | hasFPImpl (const MachineFunction &MF) const override |
| hasFPImpl - Return true if the specified function should have a dedicated frame pointer register. |
Definition at line 21 of file ARMFrameLowering.h.
◆ adjustForSegmentedStacks()
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 3274 of file ARMFrameLowering.cpp.
References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addConstantPoolIndex(), llvm::MachineInstrBuilder::addExternalSymbol(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addMBB(), llvm::MachineInstrBuilder::addReg(), llvm::MachineBasicBlock::addSuccessor(), llvm::ARMCC::AL, alignToARMConstant(), assert(), B(), llvm::CFIInstBuilder::buildDefCFAOffset(), llvm::BuildMI(), llvm::CFIInstBuilder::buildOffset(), llvm::CFIInstBuilder::buildSameValue(), llvm::condCodeOp(), llvm::ARMConstantPoolSymbol::Create(), llvm::MachineFunction::CreateMachineBasicBlock(), llvm::ARMFunctionInfo::createPICLabelUId(), llvm::RegState::Define, DL, llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::MachineBasicBlock::end(), llvm::SmallPtrSetImpl< PtrType >::erase(), llvm::ARMFunctionInfo::getArgumentStackSize(), llvm::MachineFunction::getConstantPool(), llvm::MachineConstantPool::getConstantPoolIndex(), llvm::Function::getContext(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::ilist_node_impl< OptionsT >::getIterator(), llvm::TargetMachine::getMCAsmInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), llvm::MachineFunction::getTarget(), llvm::MachineFunction::insert(), llvm::SmallPtrSetImpl< PtrType >::insert(), llvm::SmallPtrSetImpl< PtrType >::insert_range(), llvm::Function::isVarArg(), kSplitStackAvailable, llvm::MachineBasicBlock::liveins(), llvm::ARMCC::LS, MBB, MBBI, llvm::MachineFrameInfo::needsSplitStackProlog(), llvm::MachineInstr::NoFlags, llvm::SmallVectorImpl< T >::pop_back_val(), llvm::MachineBasicBlock::predecessors(), llvm::predOps(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::report_fatal_error(), STI, TII, llvm::MCAsmInfo::usesWindowsCFI(), and llvm::MachineFunction::verify().
◆ assignCalleeSavedSpillSlots()
assignCalleeSavedSpillSlots - Allows target to override spill slot assignment logic.
If implemented, assignCalleeSavedSpillSlots() should assign frame slots to all CSI entries and return true. If this method returns false, spill slots will be assigned using generic implementation. assignCalleeSavedSpillSlots() may add, delete or rearrange elements of CSI.
Reimplemented from llvm::TargetFrameLowering.
Definition at line 3100 of file ARMFrameLowering.cpp.
References assert(), llvm::TargetOptions::DisableFramePointerElim(), llvm::find_if(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getTarget(), llvm::ARMFunctionInfo::isCmseNSEntryFunction(), llvm_unreachable, llvm::ARMSubtarget::NoSplit, llvm::TargetMachine::Options, llvm::ARMFunctionInfo::shouldSignReturnAddress(), llvm::ARMSubtarget::SplitR11AAPCSSignRA, llvm::ARMSubtarget::SplitR7, STI, and TRI.
◆ canSimplifyCallFramePseudos()
◆ determineCalleeSaves()
This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() should actually get saved.
The default implementation checks populates the SavedRegs bitset with all registers which are modified in the function, targets may override this function to save additional registers. This method also sets up the register scavenger ensuring there is a free register or a frameindex available. This method should not be called by any passes outside of PEI, because it may change state passed in by MF and RS. The preferred interface outside PEI is getCalleeSaves.
Reimplemented from llvm::TargetFrameLowering.
Definition at line 2513 of file ARMFrameLowering.cpp.
References assert(), canSimplifyCallFramePseudos(), canSpillOnFrameIndexAccess(), checkNumAlignedDPRCS2Regs(), contains(), llvm::dbgs(), llvm::TargetFrameLowering::determineCalleeSaves(), llvm::TargetOptions::DisableFramePointerElim(), llvm::SmallVectorTemplateCommon< T, typename >::empty(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::SmallVectorImpl< T >::erase(), EstimateFunctionSizeInBytes(), estimateRSStackSizeLimit(), F, llvm::find(), FramePtr, llvm::SmallVectorTemplateCommon< T, typename >::front(), llvm::ARMFunctionInfo::getArgRegsSaveSize(), llvm::MachineFunction::getFrameInfo(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), getMaxFPOffset(), llvm::ARMFunctionInfo::getNumAlignedDPRCS2Regs(), llvm::MachineFunction::getRegInfo(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::ARMFunctionInfo::getReturnRegsCount(), llvm::TargetFrameLowering::getStackAlign(), llvm::MachineFunction::getSubtarget(), llvm::MachineFunction::getTarget(), llvm::TargetFrameLowering::hasFP(), llvm::ARMFunctionInfo::hasStackFrame(), I, llvm::isARMLowRegister(), llvm::ARMFunctionInfo::isCmseNSEntryFunction(), isFPReserved(), llvm::MachineRegisterInfo::isLiveIn(), llvm::MachineFrameInfo::isReturnAddressTaken(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumb2Function(), llvm::ARMFunctionInfo::isThumbFunction(), LLVM_DEBUG, MRI, llvm::TargetMachine::Options, llvm::SmallVectorImpl< T >::pop_back_val(), llvm::printReg(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), requiresAAPCSFrameRecord(), llvm::BitVector::reset(), llvm::BitVector::set(), llvm::ARMFunctionInfo::setHasStackFrame(), llvm::ARMFunctionInfo::setLRIsSpilled(), llvm::ARMFunctionInfo::shouldSignReturnAddress(), Size, llvm::ARMSubtarget::SplitR7, STI, llvm::BitVector::test(), TII, TRI, llvm::Align::value(), and WindowsRequiresStackProbe().
◆ emitEpilogue()
Implements llvm::TargetFrameLowering.
Reimplemented in llvm::Thumb1FrameLowering.
Definition at line 1393 of file ARMFrameLowering.cpp.
References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, assert(), llvm::BuildMI(), llvm::condCodeOp(), llvm::dbgs(), llvm::dwarf_linker::DebugLoc, llvm::emitARMRegPlusImmediate(), emitSPUpdate(), llvm::emitT2RegPlusImmediate(), llvm::MachineInstr::FrameDestroy, FramePtr, llvm::ARMFunctionInfo::getArgRegsSaveSize(), getArgumentStackToRestore(), llvm::Function::getCallingConv(), llvm::ARMFunctionInfo::getDPRCalleeSavedArea1Size(), llvm::ARMFunctionInfo::getDPRCalleeSavedGapSize(), llvm::ARMFunctionInfo::getFPCXTSaveAreaSize(), llvm::ARMFunctionInfo::getFPStatusSavesSize(), llvm::MachineFunction::getFrameInfo(), llvm::ARMFunctionInfo::getFramePtrSpillOffset(), llvm::MachineFunction::getFunction(), llvm::ARMFunctionInfo::getGPRCalleeSavedArea1Size(), llvm::ARMFunctionInfo::getGPRCalleeSavedArea2Size(), llvm::ARMFunctionInfo::getGPRCalleeSavedArea3Size(), llvm::MachineFunction::getInfo(), llvm::MachineFunction::getName(), llvm::MachineFrameInfo::getPristineRegs(), llvm::TargetSubtargetInfo::getRegisterInfo(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), llvm::CallingConv::GHC, llvm::ARMFunctionInfo::hasStackFrame(), llvm::MachineFunction::hasWinCFI(), initMBBRange(), insertSEHRange(), llvm::ARMFunctionInfo::isCmseNSEntryFunction(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumbFunction(), LLVM_DEBUG, MBB, MBBI, llvm::predOps(), llvm::MachineInstrBuilder::setMIFlag(), llvm::ARMFunctionInfo::shouldRestoreSPFromFP(), llvm::ARMFunctionInfo::shouldSignReturnAddress(), llvm::ARMSubtarget::SplitR11WindowsSEH, STI, llvm::BitVector::test(), TII, and llvm::tryFoldSPUpdateIntoPushPop().
◆ emitPrologue()
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
Implements llvm::TargetFrameLowering.
Reimplemented in llvm::Thumb1FrameLowering.
Definition at line 885 of file ARMFrameLowering.cpp.
References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addExternalSymbol(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, assert(), llvm::CFIInstBuilder::buildDefCFA(), llvm::CFIInstBuilder::buildDefCFARegister(), llvm::BuildMI(), llvm::CFIInstBuilder::buildOffset(), llvm::condCodeOp(), llvm::dbgs(), DPRCS1, DPRCS2, emitAligningInstructions(), emitRegPlusImmediate(), emitSPUpdate(), FPCXT, FPStatus, FramePtr, llvm::MachineInstr::FrameSetup, llvm::ARMFunctionInfo::getArgRegsSaveSize(), llvm::MachineFrameInfo::getCalleeSavedInfo(), llvm::Function::getCallingConv(), llvm::MachineFunction::getFrameInfo(), llvm::ARMFunctionInfo::getFramePtrSpillOffset(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getInfo(), llvm::MachineFrameInfo::getMaxAlign(), getMaxFPOffset(), llvm::MachineFunction::getName(), llvm::ARMFunctionInfo::getNumAlignedDPRCS2Regs(), llvm::MachineFrameInfo::getObjectOffset(), llvm::MachineFrameInfo::getOffsetAdjustment(), getSpillArea(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getTarget(), llvm::CallingConv::GHC, GPRCS1, GPRCS2, GPRCS3, llvm::TargetFrameLowering::hasFP(), llvm::ARMFunctionInfo::hasStackFrame(), llvm::MachineFrameInfo::hasVarSizedObjects(), I, llvm::RegState::Implicit, insertSEHRange(), llvm::ARMFunctionInfo::isThumb1OnlyFunction(), llvm::ARMFunctionInfo::isThumbFunction(), llvm::MachineInstrBundleIterator< Ty, IsReverse >::isValid(), llvm::CodeModel::Kernel, llvm::RegState::Kill, llvm::CodeModel::Large, LLVM_DEBUG, llvm_unreachable, MBB, MBBI, llvm::CodeModel::Medium, needsWinCFI(), Opc, llvm::predOps(), llvm::reverse(), llvm::ARMFunctionInfo::setDPRCalleeSavedArea1Offset(), llvm::ARMFunctionInfo::setDPRCalleeSavedArea1Size(), llvm::ARMFunctionInfo::setDPRCalleeSavedGapSize(), llvm::ARMFunctionInfo::setFPCXTSaveAreaSize(), llvm::ARMFunctionInfo::setFPStatusSavesSize(), llvm::ARMFunctionInfo::setFramePtrSpillOffset(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea1Offset(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea1Size(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea2Offset(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea2Size(), llvm::ARMFunctionInfo::setGPRCalleeSavedArea3Size(), llvm::MachineFunction::setHasWinCFI(), llvm::MachineInstrBuilder::setMIFlag(), llvm::MachineInstrBuilder::setMIFlags(), llvm::MachineFrameInfo::setOffsetAdjustment(), llvm::ARMFunctionInfo::setShouldRestoreSPFromFP(), llvm::ARMFunctionInfo::shouldSignReturnAddress(), sizeOfSPAdjustment(), skipAlignedDPRCS2Spills(), llvm::CodeModel::Small, llvm::ARMSubtarget::SplitR11WindowsSEH, STI, TII, llvm::CodeModel::Tiny, llvm::tryFoldSPUpdateIntoPushPop(), llvm::Align::value(), and WindowsRequiresStackProbe().
◆ enableCalleeSaveSkip()
◆ enableShrinkWrapping()
◆ getCalleeSavedSpillSlots()
getCalleeSavedSpillSlots - This method returns a pointer to an array of pairs, that contains an entry for each callee saved register that must be spilled to a particular stack location if it is spilled.
Each entry in this array contains a <register,offset> pair, indicating the fixed offset from the incoming stack pointer that each register should be spilled at. If a register is not listed here, the code generator is allowed to spill it anywhere it chooses.
Reimplemented from llvm::TargetFrameLowering.
Definition at line 3157 of file ARMFrameLowering.cpp.
◆ getCalleeSaves()
◆ getFrameIndexReference()
◆ hasFPImpl()
◆ hasReservedCallFrame()
◆ isFPReserved()
◆ isProfitableForNoCSROpt()
| bool llvm::ARMFrameLowering::isProfitableForNoCSROpt ( const Function & F) const | inlineoverridevirtual |
|---|
◆ keepFramePointer()
◆ processFunctionBeforeFrameFinalized()
◆ requiresAAPCSFrameRecord()
◆ ResolveFrameIndexReference()
Definition at line 1569 of file ARMFrameLowering.cpp.
References assert(), llvm::MachineFunction::getFrameInfo(), llvm::ARMFunctionInfo::getFramePtrSpillOffset(), llvm::MachineFunction::getInfo(), llvm::MachineFrameInfo::getObjectOffset(), llvm::MachineFrameInfo::getStackSize(), llvm::MachineFunction::getSubtarget(), llvm::TargetFrameLowering::hasFP(), hasReservedCallFrame(), llvm::ARMFunctionInfo::hasStackFrame(), llvm::MachineFrameInfo::isFixedObjectIndex(), llvm::ARMFunctionInfo::isThumb2Function(), llvm::ARMFunctionInfo::isThumbFunction(), and llvm::Offset.
Referenced by llvm::ARMBaseRegisterInfo::eliminateFrameIndex(), llvm::ThumbRegisterInfo::eliminateFrameIndex(), and getFrameIndexReference().
◆ restoreCalleeSavedRegisters()
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().
If it returns true, and any of the registers in CSI is not restored, it sets the corresponding Restored flag in CSI to false. Returns false otherwise.
Reimplemented from llvm::TargetFrameLowering.
Reimplemented in llvm::Thumb1FrameLowering.
Definition at line 2268 of file ARMFrameLowering.cpp.
References DPRCS1, emitAlignedDPRCS2Restores(), llvm::ArrayRef< T >::empty(), llvm::ARMFunctionInfo::getArgRegsSaveSize(), llvm::MachineFunction::getInfo(), llvm::ARMFunctionInfo::getNumAlignedDPRCS2Regs(), getSpillArea(), GPRCS1, GPRCS2, GPRCS3, llvm::ARMFunctionInfo::isThumbFunction(), MBB, MI, STI, and TRI.
◆ spillCalleeSavedRegisters()
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 2202 of file ARMFrameLowering.cpp.
References llvm::MachineInstrBuilder::add(), llvm::MachineInstrBuilder::addImm(), llvm::MachineInstrBuilder::addReg(), llvm::ARMCC::AL, llvm::any_of(), llvm::BuildMI(), llvm::CallingConv::C, llvm::dwarf_linker::DebugLoc, DPRCS1, emitAlignedDPRCS2Spills(), llvm::ArrayRef< T >::empty(), llvm::MachineInstr::FrameSetup, llvm::MachineFunction::getInfo(), llvm::ARMFunctionInfo::getNumAlignedDPRCS2Regs(), getSpillArea(), GPRCS1, GPRCS2, GPRCS3, llvm::ARMFunctionInfo::isThumbFunction(), MBB, MI, llvm::predOps(), llvm::MachineInstrBuilder::setMIFlags(), llvm::ARMFunctionInfo::shouldSignReturnAddress(), STI, and TRI.
◆ updateLRRestored()
◆ STI
Definition at line 23 of file ARMFrameLowering.h.
Referenced by adjustForSegmentedStacks(), ARMFrameLowering(), assignCalleeSavedSpillSlots(), determineCalleeSaves(), llvm::Thumb1FrameLowering::eliminateCallFramePseudoInstr(), emitEpilogue(), llvm::Thumb1FrameLowering::emitEpilogue(), emitPrologue(), llvm::Thumb1FrameLowering::emitPrologue(), enableShrinkWrapping(), restoreCalleeSavedRegisters(), llvm::Thumb1FrameLowering::restoreCalleeSavedRegisters(), spillCalleeSavedRegisters(), and llvm::Thumb1FrameLowering::spillCalleeSavedRegisters().
The documentation for this class was generated from the following files:
- lib/Target/ARM/ARMFrameLowering.h
- lib/Target/ARM/ARMFrameLowering.cpp