#include <Instructions.h>

Inheritance diagram for llvm::AllocaInst:

Collaboration diagram for llvm::AllocaInst:

Public Member Functions
	AllocaInst (Type Ty, Value ArraySize=nullptr, const Twine &Name="", Instruction *InsertBefore=nullptr)
	AllocaInst (Type Ty, Value ArraySize, const Twine &Name, BasicBlock *InsertAtEnd)
	AllocaInst (Type Ty, const Twine &Name, Instruction InsertBefore=nullptr)
	AllocaInst (Type Ty, const Twine &Name, BasicBlock InsertAtEnd)
	AllocaInst (Type Ty, Value ArraySize, unsigned Align, const Twine &Name="", Instruction *InsertBefore=nullptr)
	AllocaInst (Type Ty, Value ArraySize, unsigned Align, const Twine &Name, BasicBlock *InsertAtEnd)
virtual	~AllocaInst ()
bool	isArrayAllocation () const
const Value *	getArraySize () const
Value *	getArraySize ()
PointerType *	getType () const
Type *	getAllocatedType () const
unsigned	getAlignment () const
void	setAlignment (unsigned Align)
bool	isStaticAlloca () const
bool	isUsedWithInAlloca () const
	Return true if this alloca is used as an inalloca argument to a call. Such allocas are never considered static even if they are in the entry block.
void	setUsedWithInAlloca (bool V)
	Specify whether this alloca is used to represent the arguments to a call.
Static Public Member Functions
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
AllocaInst *	clone_impl () const override

Detailed Description

AllocaInst - an instruction to allocate memory on the stack

Definition at line 75 of file Instructions.h.

Constructor & Destructor Documentation

AllocaInst::AllocaInst	(	Type *	Ty,
		Value *	ArraySize = `nullptr`,
		const Twine &	Name = `""`,
		Instruction *	InsertBefore = `nullptr`
	)		`[explicit]`

Definition at line 835 of file Instructions.cpp.

References llvm::Type::isVoidTy(), setAlignment(), and llvm::Value::setName().

Referenced by clone_impl().

AllocaInst::AllocaInst	(	Type *	Ty,
		Value *	ArraySize,
		const Twine &	Name,
		BasicBlock *	InsertAtEnd
	)

Definition at line 844 of file Instructions.cpp.

References llvm::Type::isVoidTy(), setAlignment(), and llvm::Value::setName().

AllocaInst::AllocaInst	(	Type *	Ty,
		const Twine &	Name,
		Instruction *	InsertBefore = `nullptr`
	)

Definition at line 853 of file Instructions.cpp.

References llvm::Type::isVoidTy(), setAlignment(), and llvm::Value::setName().

AllocaInst::AllocaInst	(	Type *	Ty,
		const Twine &	Name,
		BasicBlock *	InsertAtEnd
	)

Definition at line 862 of file Instructions.cpp.

References llvm::Type::isVoidTy(), setAlignment(), and llvm::Value::setName().

AllocaInst::AllocaInst	(	Type *	Ty,
		Value *	ArraySize,
		unsigned	Align,
		const Twine &	Name = `""`,
		Instruction *	InsertBefore = `nullptr`
	)

Definition at line 871 of file Instructions.cpp.

References llvm::Type::isVoidTy(), setAlignment(), and llvm::Value::setName().

AllocaInst::AllocaInst	(	Type *	Ty,
		Value *	ArraySize,
		unsigned	Align,
		const Twine &	Name,
		BasicBlock *	InsertAtEnd
	)

Definition at line 880 of file Instructions.cpp.

References llvm::Type::isVoidTy(), setAlignment(), and llvm::Value::setName().

AllocaInst::~AllocaInst ( ) [virtual]

Definition at line 890 of file Instructions.cpp.

Member Function Documentation

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

Reimplemented from llvm::UnaryInstruction.

Definition at line 146 of file Instructions.h.

References llvm::Alloca, and llvm::Instruction::getOpcode().

Referenced by classof().

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

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

Reimplemented from llvm::UnaryInstruction.

Definition at line 149 of file Instructions.h.

References classof().

AllocaInst * AllocaInst::clone_impl ( ) const [override, protected, virtual]

Implements llvm::Instruction.

Definition at line 3637 of file Instructions.cpp.

References AllocaInst(), getAlignment(), getAllocatedType(), llvm::User::getOperand(), isUsedWithInAlloca(), and setUsedWithInAlloca().

unsigned llvm::AllocaInst::getAlignment ( ) const [inline]

getAlignment - Return the alignment of the memory that is being allocated by the instruction.

Definition at line 121 of file Instructions.h.

References llvm::Instruction::getSubclassDataFromInstruction().

Referenced by clone_impl(), computeKnownBits(), InlineCallIfPossible(), setAlignment(), llvm::ObjectSizeOffsetVisitor::visitAllocaInst(), llvm::InstCombiner::visitAllocaInst(), and WriteInstruction().

Type * AllocaInst::getAllocatedType ( ) const

getAllocatedType - Return the type that is being allocated by the instruction.

Definition at line 908 of file Instructions.cpp.

References llvm::SequentialType::getElementType(), and getType().

Referenced by clone_impl(), InlineCallIfPossible(), llvm::InlineFunction(), tryPromoteAllocaToVector(), llvm::ObjectSizeOffsetVisitor::visitAllocaInst(), llvm::InstCombiner::visitAllocaInst(), and llvm::ObjectSizeOffsetEvaluator::visitAllocaInst().

const Value* llvm::AllocaInst::getArraySize ( ) const [inline]

getArraySize - Get the number of elements allocated. For a simple allocation of a single element, this will return a constant 1 value.

Definition at line 104 of file Instructions.h.

References llvm::User::getOperand().

Referenced by llvm::InlineFunction(), isStaticAlloca(), llvm::NVPTXAllocaHoisting::runOnFunction(), llvm::ObjectSizeOffsetVisitor::visitAllocaInst(), llvm::InstCombiner::visitAllocaInst(), and llvm::ObjectSizeOffsetEvaluator::visitAllocaInst().

Value* llvm::AllocaInst::getArraySize ( ) [inline]

Definition at line 105 of file Instructions.h.

References llvm::User::getOperand().

PointerType* llvm::AllocaInst::getType ( ) const [inline]

getType - Overload to return most specific pointer type

Reimplemented from llvm::Value.

Definition at line 109 of file Instructions.h.

Referenced by computeKnownBits(), getAllocatedType(), hasLifetimeMarkers(), llvm::isAllocaPromotable(), isArray(), llvm::Interpreter::visitAllocaInst(), and llvm::InstCombiner::visitAllocaInst().

bool AllocaInst::isArrayAllocation ( ) const

isArrayAllocation - Return true if there is an allocation size parameter to the allocation instruction that is not 1.

Definition at line 902 of file Instructions.cpp.

References llvm::User::getOperand().

Referenced by InlineCallIfPossible(), isArray(), llvm::ObjectSizeOffsetVisitor::visitAllocaInst(), llvm::InstCombiner::visitAllocaInst(), and llvm::ObjectSizeOffsetEvaluator::visitAllocaInst().

bool AllocaInst::isStaticAlloca ( ) const

isStaticAlloca - Return true if this alloca is in the entry block of the function and is a constant size. If so, the code generator will fold it into the prolog/epilog code, so it is basically free.

Definition at line 915 of file Instructions.cpp.

References llvm::Function::front(), getArraySize(), llvm::Instruction::getParent(), llvm::BasicBlock::getParent(), and isUsedWithInAlloca().

bool llvm::AllocaInst::isUsedWithInAlloca ( ) const [inline]

Return true if this alloca is used as an inalloca argument to a call. Such allocas are never considered static even if they are in the entry block.

Definition at line 134 of file Instructions.h.

References llvm::Instruction::getSubclassDataFromInstruction().

Referenced by clone_impl(), isStaticAlloca(), and WriteInstruction().

void AllocaInst::setAlignment ( unsigned Align )

Definition at line 893 of file Instructions.cpp.

References getAlignment(), llvm::Instruction::getSubclassDataFromInstruction(), and llvm::Log2_32().

Referenced by AllocaInst(), InlineCallIfPossible(), and llvm::InstCombiner::visitAllocaInst().

void llvm::AllocaInst::setUsedWithInAlloca ( bool V ) [inline]