#include "Target/DirectX/DirectXFrameLowering.h"
Inheritance diagram for llvm::DirectXFrameLowering:
Public Member Functions | |
| DirectXFrameLowering (const DirectXSubtarget &STI) | |
| void | emitPrologue (MachineFunction &, MachineBasicBlock &) const override |
| emitProlog/emitEpilog - These methods insert prolog and epilog code into the function. | |
| void | emitEpilogue (MachineFunction &, MachineBasicBlock &) const override |
| bool | hasFP (const MachineFunction &) const override |
| hasFP - Return true if the specified function should have a dedicated frame pointer register. | |
 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 | assignCalleeSavedSpillSlots (MachineFunction &MF, const TargetRegisterInfo *TRI, std::vector< CalleeSavedInfo > &CSI, unsigned &MinCSFrameIndex, unsigned &MaxCSFrameIndex) const |
| assignCalleeSavedSpillSlots - Allows target to override spill slot assignment logic. | |
| virtual bool | assignCalleeSavedSpillSlots (MachineFunction &MF, const TargetRegisterInfo *TRI, std::vector< CalleeSavedInfo > &CSI) const |
| virtual const SpillSlot * | getCalleeSavedSpillSlots (unsigned &NumEntries) const |
| 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. | |
| virtual bool | targetHandlesStackFrameRounding () const |
| targetHandlesStackFrameRounding - Returns true if the target is responsible for rounding up the stack frame (probably at emitPrologue time). | |
| virtual bool | enableShrinkWrapping (const MachineFunction &MF) const |
| Returns true if the target will correctly handle shrink wrapping. | |
| 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 bool | enableCalleeSaveSkip (const MachineFunction &MF) const |
| Returns true if the target can safely skip saving callee-saved registers for noreturn nounwind functions. | |
| virtual void | emitPrologue (MachineFunction &MF, MachineBasicBlock &MBB) const =0 |
| emitProlog/emitEpilog - These methods insert prolog and epilog code into the function. | |
| virtual void | emitEpilogue (MachineFunction &MF, MachineBasicBlock &MBB) const =0 |
| 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 (MachineFunction &MF) const |
| Returns true if we may need to fix the unwind information for the function. | |
| virtual void | resetCFIToInitialState (MachineBasicBlock &MBB) const |
| Emit CFI instructions that recreate the state of the unwind information upon fucntion 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 | adjustForSegmentedStacks (MachineFunction &MF, MachineBasicBlock &PrologueMBB) const |
| Adjust the prologue to have the function use segmented stacks. | |
| 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. | |
| virtual bool | spillCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, ArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const |
| 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(). | |
| virtual bool | restoreCalleeSavedRegisters (MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, MutableArrayRef< CalleeSavedInfo > CSI, const TargetRegisterInfo *TRI) const |
| 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(). | |
| virtual bool | keepFramePointer (const MachineFunction &MF) const |
| Return true if the target wants to keep the frame pointer regardless of the function attribute "frame-pointer". | |
| virtual bool | hasFP (const MachineFunction &MF) const =0 |
| hasFP - Return true if the specified function should have a dedicated frame pointer register. | |
| virtual bool | hasReservedCallFrame (const MachineFunction &MF) const |
| 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. | |
| virtual bool | canSimplifyCallFramePseudos (const MachineFunction &MF) const |
| canSimplifyCallFramePseudos - When possible, it's best to simplify the call frame pseudo ops before doing frame index elimination. | |
| virtual bool | needsFrameIndexResolution (const MachineFunction &MF) const |
| virtual StackOffset | getFrameIndexReference (const MachineFunction &MF, int FI, Register &FrameReg) const |
| getFrameIndexReference - This method should return the base register and offset used to reference a frame index location. | |
| 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 | getCalleeSaves (const MachineFunction &MF, BitVector &SavedRegs) const |
Returns the callee-saved registers as computed by determineCalleeSaves in the BitVector SavedRegs. | |
| virtual void | determineCalleeSaves (MachineFunction &MF, BitVector &SavedRegs, RegScavenger *RS=nullptr) const |
| This method determines which of the registers reported by TargetRegisterInfo::getCalleeSavedRegs() should actually get saved. | |
| virtual void | processFunctionBeforeFrameFinalized (MachineFunction &MF, RegScavenger *RS=nullptr) const |
| processFunctionBeforeFrameFinalized - This method is called immediately before the specified function's frame layout (MF.getFrameInfo()) is finalized. | |
| 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 MachineBasicBlock::iterator | eliminateCallFramePseudoInstr (MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator MI) const |
| This method is called during prolog/epilog code insertion to eliminate call frame setup and destroy pseudo instructions (but only if the Target is using them). | |
| 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 bool | isProfitableForNoCSROpt (const Function &F) const |
| Check if the no-CSR optimisation is profitable for the given function. | |
| 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. | |
Additional Inherited Members | |
| Public Types inherited from llvm::TargetFrameLowering | |
| enum | StackDirection { StackGrowsUp , StackGrowsDown } |
| 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. | |
Detailed Description
Definition at line 24 of file DirectXFrameLowering.h.
Constructor & Destructor Documentation
◆ DirectXFrameLowering()
|
inlineexplicit |
Definition at line 26 of file DirectXFrameLowering.h.
Member Function Documentation
◆ emitEpilogue()
|
inlineoverridevirtual |
Implements llvm::TargetFrameLowering.
Definition at line 30 of file DirectXFrameLowering.h.
◆ emitPrologue()
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inlineoverridevirtual |
emitProlog/emitEpilog - These methods insert prolog and epilog code into the function.
Implements llvm::TargetFrameLowering.
Definition at line 29 of file DirectXFrameLowering.h.
◆ hasFP()
|
inlineoverridevirtual |
hasFP - Return true if the specified function should have a dedicated frame pointer register.
For most targets this is true only if the function has variable sized allocas or if frame pointer elimination is disabled.
Implements llvm::TargetFrameLowering.
Definition at line 32 of file DirectXFrameLowering.h.
The documentation for this class was generated from the following file:
- lib/Target/DirectX/DirectXFrameLowering.h
