LiveDebugValues::ValueIDNum Class Reference

Unique identifier for a value defined by an instruction, as a value type. More...

#include "CodeGen/LiveDebugValues/InstrRefBasedImpl.h"

Public Member Functions
	ValueIDNum ()
	ValueIDNum (uint64_t Block, uint64_t Inst, uint64_t Loc)
	ValueIDNum (uint64_t Block, uint64_t Inst, LocIdx Loc)
uint64_t	getBlock () const
uint64_t	getInst () const
uint64_t	getLoc () const
bool	isPHI () const
uint64_t	asU64 () const
bool	operator< (const ValueIDNum &Other) const
bool	operator== (const ValueIDNum &Other) const
bool	operator!= (const ValueIDNum &Other) const
std::string	asString (const std::string &mlocname) const

Static Public Member Functions
static ValueIDNum	fromU64 (uint64_t v)

Static Public Attributes
static LLVM_ABI_FOR_TEST ValueIDNum	EmptyValue = {UINT_MAX, UINT_MAX, UINT_MAX}
static LLVM_ABI_FOR_TEST ValueIDNum	TombstoneValue = {UINT_MAX, UINT_MAX, UINT_MAX - 1}

Detailed Description

Unique identifier for a value defined by an instruction, as a value type.

Casts back and forth to a uint64_t. Probably replacable with something less bit-constrained. Each value identifies the instruction and machine location where the value is defined, although there may be no corresponding machine operand for it (ex: regmasks clobbering values). The instructions are one-based, and definitions that are PHIs have instruction number zero.

The obvious limits of a 1M block function or 1M instruction blocks are problematic; but by that point we should probably have bailed out of trying to analyse the function.

Definition at line 146 of file InstrRefBasedImpl.h.

Constructor & Destructor Documentation

ValueIDNum() [1/3]

LiveDebugValues::ValueIDNum::ValueIDNum ( )

inline

Definition at line 163 of file InstrRefBasedImpl.h.

References EmptyValue.

Referenced by fromU64(), operator!=(), operator<(), and operator==().

ValueIDNum() [2/3]

LiveDebugValues::ValueIDNum::ValueIDNum ( uint64_t Block, uint64_t Inst, uint64_t Loc )

inline

Definition at line 165 of file InstrRefBasedImpl.h.

References llvm::Block.

ValueIDNum() [3/3]

LiveDebugValues::ValueIDNum::ValueIDNum ( uint64_t Block, uint64_t Inst, LocIdx Loc )

inline

Definition at line 169 of file InstrRefBasedImpl.h.

References llvm::Block.

Member Function Documentation

asString()

std::string LiveDebugValues::ValueIDNum::asString ( const std::string & mlocname ) const

inline

Definition at line 196 of file InstrRefBasedImpl.h.

References llvm::concat(), llvm::Twine::concat(), and llvm::Twine::str().

Referenced by LiveDebugValues::MLocTracker::IDAsString().

asU64()

uint64_t LiveDebugValues::ValueIDNum::asU64 ( ) const

inline

Definition at line 178 of file InstrRefBasedImpl.h.

Referenced by llvm::DenseMapInfo< ValueIDNum >::getHashValue(), llvm::SSAUpdaterTraits< LDVSSAUpdater >::GetPoisonVal(), and operator<().

fromU64()

ValueIDNum LiveDebugValues::ValueIDNum::fromU64 ( uint64_t v )

inlinestatic

Definition at line 180 of file InstrRefBasedImpl.h.

References Value, and ValueIDNum().

getBlock()

uint64_t LiveDebugValues::ValueIDNum::getBlock ( ) const

inline

Definition at line 173 of file InstrRefBasedImpl.h.

Referenced by TransferTracker::isEntryValueValue(), and TransferTracker::loadVarInloc().

getInst()

uint64_t LiveDebugValues::ValueIDNum::getInst ( ) const

inline

Definition at line 174 of file InstrRefBasedImpl.h.

Referenced by TransferTracker::loadVarInloc().

getLoc()

uint64_t LiveDebugValues::ValueIDNum::getLoc ( ) const

inline

Definition at line 175 of file InstrRefBasedImpl.h.

Referenced by LiveDebugValues::MLocTracker::IDAsString(), TransferTracker::isEntryValueValue(), and TransferTracker::recoverAsEntryValue().

isPHI()

bool LiveDebugValues::ValueIDNum::isPHI ( ) const

inline

Definition at line 176 of file InstrRefBasedImpl.h.

Referenced by TransferTracker::isEntryValueValue(), and TransferTracker::loadVarInloc().

operator!=()

bool LiveDebugValues::ValueIDNum::operator!= ( const ValueIDNum & Other ) const

inline

Definition at line 194 of file InstrRefBasedImpl.h.

References llvm::Other, and ValueIDNum().

operator<()

bool LiveDebugValues::ValueIDNum::operator< ( const ValueIDNum & Other ) const

inline

Definition at line 186 of file InstrRefBasedImpl.h.

References asU64(), llvm::Other, and ValueIDNum().

operator==()

bool LiveDebugValues::ValueIDNum::operator== ( const ValueIDNum & Other ) const

inline

Definition at line 190 of file InstrRefBasedImpl.h.

References llvm::Other, and ValueIDNum().

Member Data Documentation

BlockNo

uint64_t LiveDebugValues::ValueIDNum::BlockNo

Definition at line 149 of file InstrRefBasedImpl.h.

EmptyValue

ValueIDNum ValueIDNum::EmptyValue = {UINT_MAX, UINT_MAX, UINT_MAX}

static

Definition at line 208 of file InstrRefBasedImpl.h.

Referenced by TransferTracker::clobberMloc(), LiveDebugValues::FuncValueTable::FuncValueTable(), llvm::DenseMapInfo< ValueIDNum >::getEmptyKey(), LiveDebugValues::DbgOp::isUndef(), TransferTracker::loadInlocs(), TransferTracker::transferMlocs(), ValueIDNum(), and LiveDebugValues::MLocTracker::wipeRegister().

InstNo

uint64_t LiveDebugValues::ValueIDNum::InstNo

The block where the def happens.

Definition at line 150 of file InstrRefBasedImpl.h.

LocNo

uint64_t LiveDebugValues::ValueIDNum::LocNo

The Instruction where the def happens.

One based, is distance from start of block.

Definition at line 152 of file InstrRefBasedImpl.h.

[struct]

struct { ... } LiveDebugValues::ValueIDNum::s

TombstoneValue

ValueIDNum ValueIDNum::TombstoneValue = {UINT_MAX, UINT_MAX, UINT_MAX - 1}

static

Definition at line 209 of file InstrRefBasedImpl.h.

Referenced by llvm::DenseMapInfo< ValueIDNum >::getTombstoneKey().

Value

uint64_t LiveDebugValues::ValueIDNum::Value

Definition at line 155 of file InstrRefBasedImpl.h.

Referenced by TransferTracker::checkInstForNewValues(), and fromU64().

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

• lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.h
• lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.cpp