llvm::ARM::WinEH Namespace Reference

Classes
struct	EpilogueScope
	ExceptionDataRecord - An entry in the table of exception data (.xdata) More...
struct	ExceptionDataRecord
class	RuntimeFunction
	RuntimeFunction - An entry in the table of procedure data (.pdata) More...

Enumerations
enum	RuntimeFunctionFlag { RuntimeFunctionFlag::RFF_Unpacked, RuntimeFunctionFlag::RFF_Packed, RuntimeFunctionFlag::RFF_PackedFragment, RuntimeFunctionFlag::RFF_Reserved }
enum	ReturnType { ReturnType::RT_POP, ReturnType::RT_B, ReturnType::RT_BW, ReturnType::RT_NoEpilogue }

Functions
bool	PrologueFolding (const RuntimeFunction &RF)
	PrologueFolding - pseudo-flag derived from Stack Adjust indicating that the prologue has stack adjustment combined into the push. More...
bool	EpilogueFolding (const RuntimeFunction &RF)
	Epilogue - pseudo-flag derived from Stack Adjust indicating that the epilogue has stack adjustment combined into the pop. More...
uint16_t	StackAdjustment (const RuntimeFunction &RF)
	StackAdjustment - calculated stack adjustment in words. More...
std::pair< uint16_t, uint32_t >	SavedRegisterMask (const RuntimeFunction &RF)
	SavedRegisterMask - Utility function to calculate the set of saved general purpose (r0-r15) and VFP (d0-d31) registers. More...
size_t	HeaderWords (const ExceptionDataRecord &XR)

Enumeration Type Documentation

ReturnType

enum llvm::ARM::WinEH::ReturnType

strong

Enumerator
RT_POP
RT_B	return via pop {pc} (L flag must be set)
RT_BW	16-bit branch
RT_NoEpilogue	32-bit branch

Definition at line 26 of file ARMWinEH.h.

RuntimeFunctionFlag

enum llvm::ARM::WinEH::RuntimeFunctionFlag

strong

Enumerator
RFF_Unpacked
RFF_Packed	unpacked entry
RFF_PackedFragment	packed entry
RFF_Reserved	packed entry representing a fragment

Definition at line 19 of file ARMWinEH.h.

Function Documentation

EpilogueFolding()

bool llvm::ARM::WinEH::EpilogueFolding ( const RuntimeFunction &  RF )

inline

Epilogue - pseudo-flag derived from Stack Adjust indicating that the epilogue has stack adjustment combined into the pop.

Definition at line 191 of file ARMWinEH.h.

References llvm::ARM::WinEH::RuntimeFunction::StackAdjust().

HeaderWords()

size_t llvm::ARM::WinEH::HeaderWords ( const ExceptionDataRecord &  XR )

inline

Definition at line 429 of file ARMWinEH.h.

References llvm::ARM::WinEH::ExceptionDataRecord::Data, and llvm::ARM::WinEH::ExceptionDataRecord::isAArch64.

Referenced by llvm::ARM::WinEH::ExceptionDataRecord::CodeWords(), llvm::ARM::WinEH::ExceptionDataRecord::EpilogueCount(), llvm::ARM::WinEH::ExceptionDataRecord::EpilogueScopes(), llvm::ARM::WinEH::EpilogueScope::EpilogueStartIndexAArch64(), llvm::ARM::WinEH::ExceptionDataRecord::ExceptionHandlerParameter(), llvm::ARM::WinEH::ExceptionDataRecord::ExceptionHandlerRVA(), and llvm::ARM::WinEH::ExceptionDataRecord::UnwindByteCode().

PrologueFolding()

bool llvm::ARM::WinEH::PrologueFolding ( const RuntimeFunction &  RF )

inline

PrologueFolding - pseudo-flag derived from Stack Adjust indicating that the prologue has stack adjustment combined into the push.

Definition at line 186 of file ARMWinEH.h.

References llvm::ARM::WinEH::RuntimeFunction::StackAdjust().

Referenced by SavedRegisterMask().

SavedRegisterMask()

std::pair< uint16_t, uint32_t > llvm::ARM::WinEH::SavedRegisterMask

(

const RuntimeFunction &

RF

)

SavedRegisterMask - Utility function to calculate the set of saved general purpose (r0-r15) and VFP (d0-d31) registers.

Definition at line 16 of file ARMWinEH.cpp.

References llvm::ARM::WinEH::RuntimeFunction::C(), llvm::ARM::WinEH::RuntimeFunction::L(), PrologueFolding(), llvm::ARM::WinEH::RuntimeFunction::R(), llvm::ARM::WinEH::RuntimeFunction::Reg(), and llvm::ARM::WinEH::RuntimeFunction::StackAdjust().

Referenced by StackAdjustment().

StackAdjustment()

uint16_t llvm::ARM::WinEH::StackAdjustment ( const RuntimeFunction &  RF )

inline

StackAdjustment - calculated stack adjustment in words.

The stack adjustment should be determined via this function to account for the special handling the special encoding when the value is >= 0x3f4.

Definition at line 197 of file ARMWinEH.h.

References SavedRegisterMask(), and llvm::ARM::WinEH::RuntimeFunction::StackAdjust().

Referenced by llvm::X86FrameLowering::eliminateCallFramePseudoInstr(), and ExpandMOVImmSExti8().