#include <MachineJumpTableInfo.h>

Public Types
enum	JTEntryKind { EK_BlockAddress, EK_GPRel64BlockAddress, EK_GPRel32BlockAddress, EK_LabelDifference32, EK_Inline, EK_Custom32 }
Public Member Functions
	MachineJumpTableInfo (JTEntryKind Kind)
JTEntryKind	getEntryKind () const
unsigned	getEntrySize (const DataLayout &TD) const
	getEntrySize - Return the size of each entry in the jump table.
unsigned	getEntryAlignment (const DataLayout &TD) const
	getEntryAlignment - Return the alignment of each entry in the jump table.
unsigned	createJumpTableIndex (const std::vector< MachineBasicBlock * > &DestBBs)
bool	isEmpty () const
const std::vector < MachineJumpTableEntry > &	getJumpTables () const
void	RemoveJumpTable (unsigned Idx)
bool	ReplaceMBBInJumpTables (MachineBasicBlock Old, MachineBasicBlock New)
bool	ReplaceMBBInJumpTable (unsigned Idx, MachineBasicBlock Old, MachineBasicBlock New)
void	print (raw_ostream &OS) const
void	dump () const

Detailed Description

Definition at line 42 of file MachineJumpTableInfo.h.

Member Enumeration Documentation

enum llvm::MachineJumpTableInfo::JTEntryKind

JTEntryKind - This enum indicates how each entry of the jump table is represented and emitted.

Enumerator:

EK_BlockAddress	EK_BlockAddress - Each entry is a plain address of block, e.g.: .word LBB123
EK_GPRel64BlockAddress	EK_GPRel64BlockAddress - Each entry is an address of block, encoded with a relocation as gp-relative, e.g.: .gpdword LBB123
EK_GPRel32BlockAddress	EK_GPRel32BlockAddress - Each entry is an address of block, encoded with a relocation as gp-relative, e.g.: .gprel32 LBB123
EK_LabelDifference32	EK_LabelDifference32 - Each entry is the address of the block minus the address of the jump table. This is used for PIC jump tables where gprel32 is not supported. e.g.: .word LBB123 - LJTI1_2 If the .set directive is supported, this is emitted as: .set L4_5_set_123, LBB123 - LJTI1_2 .word L4_5_set_123
EK_Inline	EK_Inline - Jump table entries are emitted inline at their point of use. It is the responsibility of the target to emit the entries.
EK_Custom32	EK_Custom32 - Each entry is a 32-bit value that is custom lowered by the TargetLowering::LowerCustomJumpTableEntry hook.

Definition at line 46 of file MachineJumpTableInfo.h.

Constructor & Destructor Documentation

llvm::MachineJumpTableInfo::MachineJumpTableInfo ( JTEntryKind Kind ) [inline, explicit]

Definition at line 82 of file MachineJumpTableInfo.h.

Member Function Documentation

unsigned MachineJumpTableInfo::createJumpTableIndex ( const std::vector< MachineBasicBlock * > & DestBBs )

createJumpTableIndex - Create a new jump table.

createJumpTableIndex - Create a new jump table entry in the jump table info.

Definition at line 769 of file MachineFunction.cpp.

void MachineJumpTableInfo::dump ( ) const

dump - Call to stderr.

Definition at line 818 of file MachineFunction.cpp.

References llvm::dbgs(), and print().

unsigned MachineJumpTableInfo::getEntryAlignment ( const DataLayout & TD ) const

getEntryAlignment - Return the alignment of each entry in the jump table.

Definition at line 748 of file MachineFunction.cpp.

References EK_BlockAddress, EK_Custom32, EK_GPRel32BlockAddress, EK_GPRel64BlockAddress, EK_Inline, EK_LabelDifference32, llvm::DataLayout::getABIIntegerTypeAlignment(), getEntryKind(), llvm::DataLayout::getPointerABIAlignment(), and llvm_unreachable.

Referenced by llvm::AsmPrinter::EmitJumpTableInfo().

JTEntryKind llvm::MachineJumpTableInfo::getEntryKind ( ) const [inline]

Definition at line 84 of file MachineJumpTableInfo.h.

Referenced by llvm::AsmPrinter::EmitJumpTableInfo(), getEntryAlignment(), and getEntrySize().

unsigned MachineJumpTableInfo::getEntrySize ( const DataLayout & TD ) const

getEntrySize - Return the size of each entry in the jump table.

Definition at line 729 of file MachineFunction.cpp.

References EK_BlockAddress, EK_Custom32, EK_GPRel32BlockAddress, EK_GPRel64BlockAddress, EK_Inline, EK_LabelDifference32, getEntryKind(), llvm::DataLayout::getPointerSize(), and llvm_unreachable.

const std::vector<MachineJumpTableEntry>& llvm::MachineJumpTableInfo::getJumpTables ( ) const [inline]

Definition at line 99 of file MachineJumpTableInfo.h.

Referenced by llvm::ARMAsmPrinter::EmitJump2Table(), llvm::ARMAsmPrinter::EmitJumpTable(), llvm::AsmPrinter::EmitJumpTableInfo(), llvm::ARMBaseInstrInfo::GetInstSizeInBytes(), llvm::HexagonTargetLowering::LowerBR_JT(), and llvm::BranchFolder::OptimizeFunction().

bool llvm::MachineJumpTableInfo::isEmpty ( ) const [inline]

isEmpty - Return true if there are no jump tables.

Definition at line 97 of file MachineJumpTableInfo.h.

void MachineJumpTableInfo::print ( raw_ostream & OS ) const

print - Used by the MachineFunction printer to print information about jump tables. Implemented in MachineFunction.cpp

Definition at line 803 of file MachineFunction.cpp.

Referenced by dump(), and llvm::MachineFunction::print().

void llvm::MachineJumpTableInfo::RemoveJumpTable ( unsigned Idx ) [inline]

RemoveJumpTable - Mark the specific index as being dead. This will prevent it from being emitted.

Definition at line 105 of file MachineJumpTableInfo.h.

Referenced by llvm::BranchFolder::OptimizeFunction().

bool MachineJumpTableInfo::ReplaceMBBInJumpTable	(	unsigned	Idx,
		MachineBasicBlock *	Old,
		MachineBasicBlock *	New
	)

ReplaceMBBInJumpTable - If Old is a target of the jump tables, update the jump table to branch to New instead.

Definition at line 789 of file MachineFunction.cpp.

References llvm::MachineJumpTableEntry::MBBs.

Referenced by ReplaceMBBInJumpTables().

bool MachineJumpTableInfo::ReplaceMBBInJumpTables	(	MachineBasicBlock *	Old,
		MachineBasicBlock *	New
	)

ReplaceMBBInJumpTables - If Old is the target of any jump tables, update the jump tables to branch to New instead.

Definition at line 778 of file MachineFunction.cpp.

References ReplaceMBBInJumpTable().

The documentation for this class was generated from the following files:

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation