#include <Instructions.h>

Inheritance diagram for llvm::AtomicRMWInst:

Collaboration diagram for llvm::AtomicRMWInst:

Public Types
enum	BinOp { Xchg, Add, Sub, And, Nand, Or, Xor, Max, Min, UMax, UMin, FIRST_BINOP = Xchg, LAST_BINOP = UMin, BAD_BINOP }
Public Member Functions
void *	operator new (size_t s)
	AtomicRMWInst (BinOp Operation, Value Ptr, Value Val, AtomicOrdering Ordering, SynchronizationScope SynchScope, Instruction *InsertBefore=0)
	AtomicRMWInst (BinOp Operation, Value Ptr, Value Val, AtomicOrdering Ordering, SynchronizationScope SynchScope, BasicBlock *InsertAtEnd)
BinOp	getOperation () const
void	setOperation (BinOp Operation)
bool	isVolatile () const
void	setVolatile (bool V)
	DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Value)
	Transparently provide more efficient getOperand methods.
void	setOrdering (AtomicOrdering Ordering)
	Set the ordering constraint on this RMW.
void	setSynchScope (SynchronizationScope SynchScope)
AtomicOrdering	getOrdering () const
	Returns the ordering constraint on this RMW.
SynchronizationScope	getSynchScope () const
Value *	getPointerOperand ()
const Value *	getPointerOperand () const
Value *	getValOperand ()
const Value *	getValOperand () const
unsigned	getPointerAddressSpace () const
	Returns the address space of the pointer operand.
Static Public Member Functions
static unsigned	getPointerOperandIndex ()
static bool	classof (const Instruction *I)
static bool	classof (const Value *V)
	Methods for support type inquiry through isa, cast, and dyn_cast:
Protected Member Functions
virtual AtomicRMWInst *	clone_impl () const

Detailed Description

AtomicRMWInst - an instruction that atomically reads a memory location, combines it with another value, and then stores the result back. Returns the old value.

Definition at line 558 of file Instructions.h.

Member Enumeration Documentation

enum llvm::AtomicRMWInst::BinOp

This enumeration lists the possible modifications atomicrmw can make. In the descriptions, 'p' is the pointer to the instruction's memory location, 'old' is the initial value of *p, and 'v' is the other value passed to the instruction. These instructions always return 'old'.

Enumerator:

Xchg	*p = v
Add	*p = old + v
Sub	*p = old - v
And	*p = old & v
Nand	*p = ~old & v
Or	*p = old \| v
Xor	*p = old ^ v
Max	*p = old >signed v ? old : v
Min	*p = old <signed v ? old : v
UMax	*p = old >unsigned v ? old : v
UMin	*p = old <unsigned v ? old : v
FIRST_BINOP
LAST_BINOP
BAD_BINOP

Definition at line 567 of file Instructions.h.

Constructor & Destructor Documentation

AtomicRMWInst::AtomicRMWInst	(	BinOp	Operation,
		Value *	Ptr,
		Value *	Val,
		AtomicOrdering	Ordering,
		SynchronizationScope	SynchScope,
		Instruction *	InsertBefore = `0`
	)

Definition at line 1286 of file Instructions.cpp.

Referenced by clone_impl().

AtomicRMWInst::AtomicRMWInst	(	BinOp	Operation,
		Value *	Ptr,
		Value *	Val,
		AtomicOrdering	Ordering,
		SynchronizationScope	SynchScope,
		BasicBlock *	InsertAtEnd
	)

Definition at line 1297 of file Instructions.cpp.

Member Function Documentation

static bool llvm::AtomicRMWInst::classof ( const Instruction * I ) [inline, static]

Definition at line 673 of file Instructions.h.

References llvm::Instruction::getOpcode().

static bool llvm::AtomicRMWInst::classof ( const Value * V ) [inline, static]

Methods for support type inquiry through isa, cast, and dyn_cast:

Reimplemented from llvm::Instruction.

Definition at line 676 of file Instructions.h.

AtomicRMWInst * AtomicRMWInst::clone_impl ( ) const [protected, virtual]

Implements llvm::Instruction.

Definition at line 3433 of file Instructions.cpp.

References AtomicRMWInst(), llvm::User::getOperand(), getOperation(), getOrdering(), getSynchScope(), isVolatile(), and setVolatile().

llvm::AtomicRMWInst::DECLARE_TRANSPARENT_OPERAND_ACCESSORS ( Value )

Transparently provide more efficient getOperand methods.

BinOp llvm::AtomicRMWInst::getOperation ( ) const [inline]

Definition at line 607 of file Instructions.h.

Referenced by clone_impl(), and LowerAtomicRMWInst().

AtomicOrdering llvm::AtomicRMWInst::getOrdering ( ) const [inline]

Returns the ordering constraint on this RMW.

Definition at line 650 of file Instructions.h.

Referenced by clone_impl(), and llvm::AliasAnalysis::getModRefInfo().

unsigned llvm::AtomicRMWInst::getPointerAddressSpace ( ) const [inline]

Returns the address space of the pointer operand.

Definition at line 668 of file Instructions.h.

References llvm::Type::getPointerAddressSpace(), getPointerOperand(), and llvm::Value::getType().

Value* llvm::AtomicRMWInst::getPointerOperand ( ) [inline]

Definition at line 660 of file Instructions.h.

Referenced by llvm::AliasAnalysis::getLocation(), and LowerAtomicRMWInst().

const Value* llvm::AtomicRMWInst::getPointerOperand ( ) const [inline]

Definition at line 661 of file Instructions.h.

static unsigned llvm::AtomicRMWInst::getPointerOperandIndex ( ) [inline, static]

Definition at line 662 of file Instructions.h.

SynchronizationScope llvm::AtomicRMWInst::getSynchScope ( ) const [inline]

Returns whether this RMW is atomic between threads or only within a single thread.

Definition at line 656 of file Instructions.h.

Referenced by clone_impl().

Value* llvm::AtomicRMWInst::getValOperand ( ) [inline]

Definition at line 664 of file Instructions.h.

Referenced by llvm::AliasAnalysis::getLocation(), and LowerAtomicRMWInst().

const Value* llvm::AtomicRMWInst::getValOperand ( ) const [inline]

Definition at line 665 of file Instructions.h.

bool llvm::AtomicRMWInst::isVolatile ( ) const [inline]

isVolatile - Return true if this is a RMW on a volatile memory location.

Definition at line 619 of file Instructions.h.

Referenced by clone_impl().

void* llvm::AtomicRMWInst::operator new ( size_t s ) [inline]

Reimplemented from llvm::User.

Definition at line 597 of file Instructions.h.

void llvm::AtomicRMWInst::setOperation ( BinOp Operation ) [inline]

Definition at line 611 of file Instructions.h.

void llvm::AtomicRMWInst::setOrdering ( AtomicOrdering Ordering ) [inline]

Set the ordering constraint on this RMW.

Definition at line 634 of file Instructions.h.

References llvm::NotAtomic.

void llvm::AtomicRMWInst::setSynchScope ( SynchronizationScope SynchScope ) [inline]

Specify whether this RMW orders other operations with respect to all concurrently executing threads, or only with respect to signal handlers executing in the same thread.

Definition at line 644 of file Instructions.h.

void llvm::AtomicRMWInst::setVolatile ( bool V ) [inline]

setVolatile - Specify whether this is a volatile RMW or not.

Definition at line 625 of file Instructions.h.

Referenced by clone_impl().

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

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation