llvm::AllocaInst Class Reference

#include <Instructions.h>

Inheritance diagram for llvm::AllocaInst:

Collaboration diagram for llvm::AllocaInst:

List of all members.

Public Member Functions
	AllocaInst (Type *Ty, Value *ArraySize=0, const Twine &Name="", Instruction *InsertBefore=0)
	AllocaInst (Type *Ty, Value *ArraySize, const Twine &Name, BasicBlock *InsertAtEnd)
	AllocaInst (Type *Ty, const Twine &Name, Instruction *InsertBefore=0)
	AllocaInst (Type *Ty, const Twine &Name, BasicBlock *InsertAtEnd)
	AllocaInst (Type *Ty, Value *ArraySize, unsigned Align, const Twine &Name="", Instruction *InsertBefore=0)
	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
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
virtual AllocaInst *	clone_impl () const

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Detailed Description

AllocaInst - an instruction to allocate memory on the stack

Definition at line 60 of file Instructions.h.

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Constructor & Destructor Documentation

AllocaInst::AllocaInst	(	Type *	Ty,
		Value *	ArraySize = 0,
		const Twine &	Name = "",
		Instruction *	InsertBefore = 0
	)		[explicit]

Definition at line 834 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 843 of file Instructions.cpp.

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

AllocaInst::AllocaInst	(	Type *	Ty,
		const Twine &	Name,
		Instruction *	InsertBefore = 0
	)

Definition at line 852 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 861 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 = 0
	)

Definition at line 870 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 879 of file Instructions.cpp.

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

AllocaInst::~AllocaInst

(

)

[virtual]

Definition at line 889 of file Instructions.cpp.

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Member Function Documentation

static bool llvm::AllocaInst::classof

(

const Instruction *

I

)

[inline, static]

Reimplemented from llvm::UnaryInstruction.

Definition at line 116 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 119 of file Instructions.h.

References classof().

AllocaInst * AllocaInst::clone_impl

(

)

const [protected, virtual]

Implements llvm::Instruction.

Definition at line 3408 of file Instructions.cpp.

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

unsigned llvm::AllocaInst::getAlignment

(

)

const [inline]

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

Definition at line 105 of file Instructions.h.

References llvm::Instruction::getSubclassDataFromInstruction().

Referenced by clone_impl(), llvm::ComputeMaskedBits(), setAlignment(), llvm::ObjectSizeOffsetVisitor::visitAllocaInst(), and llvm::InstCombiner::visitAllocaInst().

Type * AllocaInst::getAllocatedType

(

)

const

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

Definition at line 906 of file Instructions.cpp.

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

Referenced by clone_impl(), llvm::AMDGPUFrameLowering::getFrameIndexOffset(), InlineCallIfPossible(), llvm::InlineFunction(), 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 88 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 89 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 93 of file Instructions.h.

Referenced by llvm::ComputeMaskedBits(), getAllocatedType(), hasLifetimeMarkers(), 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 900 of file Instructions.cpp.

References llvm::User::getOperand().

Referenced by InlineCallIfPossible(), 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 913 of file Instructions.cpp.

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

void AllocaInst::setAlignment

(

unsigned

Align

)

Definition at line 892 of file Instructions.cpp.

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

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

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

• Instructions.h
• Instructions.cpp