LLVM: llvm::MachineJumpTableInfo Class Reference (original) (raw)

#include "[llvm/CodeGen/MachineJumpTableInfo.h](MachineJumpTableInfo%5F8h%5Fsource.html)"

Public Types
enum JTEntryKind { EK_BlockAddress, EK_GPRel64BlockAddress, EK_GPRel32BlockAddress, EK_LabelDifference32, EK_LabelDifference64, EK_Inline, EK_Custom32 }
JTEntryKind - This enum indicates how each entry of the jump table is represented and emitted. More...
Public Member Functions
MachineJumpTableInfo (JTEntryKind Kind)
JTEntryKind getEntryKind () const
LLVM_ABI unsigned getEntrySize (const DataLayout &TD) const
getEntrySize - Return the size of each entry in the jump table.
LLVM_ABI unsigned getEntryAlignment (const DataLayout &TD) const
getEntryAlignment - Return the alignment of each entry in the jump table.
LLVM_ABI unsigned createJumpTableIndex (const std::vector< MachineBasicBlock * > &DestBBs)
createJumpTableIndex - Create a new jump table.
bool isEmpty () const
isEmpty - Return true if there are no jump tables.
const std::vector< MachineJumpTableEntry > & getJumpTables () const
LLVM_ABI bool updateJumpTableEntryHotness (size_t JTI, MachineFunctionDataHotness Hotness)
void RemoveJumpTable (unsigned Idx)
RemoveJumpTable - Mark the specific index as being dead.
LLVM_ABI bool RemoveMBBFromJumpTables (MachineBasicBlock *MBB)
RemoveMBBFromJumpTables - If MBB is present in any jump tables, remove it.
LLVM_ABI bool ReplaceMBBInJumpTables (MachineBasicBlock *Old, MachineBasicBlock *New)
ReplaceMBBInJumpTables - If Old is the target of any jump tables, update the jump tables to branch to New instead.
LLVM_ABI bool 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.
LLVM_ABI void print (raw_ostream &OS) const
print - Used by the MachineFunction printer to print information about jump tables.
LLVM_ABI void dump () const
dump - Call to stderr.

Definition at line 48 of file MachineJumpTableInfo.h.

◆ 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_LabelDifference64 EK_LabelDifference64 - Each entry is the address of the block minus the address of the jump table. This is used for PIC jump tables where gprel64 is not supported. e.g.: .quad LBB123 - LJTI1_2
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 52 of file MachineJumpTableInfo.h.

llvm::MachineJumpTableInfo::MachineJumpTableInfo ( JTEntryKind Kind) inlineexplicit

◆ createJumpTableIndex()

◆ dump()

◆ getEntryAlignment()

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

Return the alignment of each entry in the jump table.

Definition at line 1356 of file MachineFunction.cpp.

References EK_BlockAddress, EK_Custom32, EK_GPRel32BlockAddress, EK_GPRel64BlockAddress, EK_Inline, EK_LabelDifference32, EK_LabelDifference64, llvm::DataLayout::getABIIntegerTypeAlignment(), getEntryKind(), llvm::DataLayout::getPointerABIAlignment(), llvm_unreachable, and llvm::Align::value().

◆ getEntryKind()

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

◆ getEntrySize()

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

Return the size of each entry in the jump table.

Definition at line 1336 of file MachineFunction.cpp.

References EK_BlockAddress, EK_Custom32, EK_GPRel32BlockAddress, EK_GPRel64BlockAddress, EK_Inline, EK_LabelDifference32, EK_LabelDifference64, getEntryKind(), llvm::DataLayout::getPointerSize(), and llvm_unreachable.

Referenced by llvm::AsmPrinter::emitJumpTableEntry(), and llvm::BPFAsmPrinter::emitJumpTableInfo().

◆ getJumpTables()

◆ isEmpty()

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

◆ print()

void MachineJumpTableInfo::print ( raw_ostream & OS ) const

◆ RemoveJumpTable()

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

◆ RemoveMBBFromJumpTables()

RemoveMBBFromJumpTables - If MBB is present in any jump tables, remove it.

If MBB is present in any jump tables, remove it.

Definition at line 1407 of file MachineFunction.cpp.

References MBB.

◆ ReplaceMBBInJumpTable()

◆ ReplaceMBBInJumpTables()

◆ updateJumpTableEntryHotness()

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