SizeOfExpr Class Reference

#include <expr.h>

Inheritance diagram for SizeOfExpr:

Collaboration diagram for SizeOfExpr:

Public Member Functions
	SizeOfExpr (Expr *e, SourcePos p)
	SizeOfExpr (const Type *t, SourcePos p)
llvm::Value *	GetValue (FunctionEmitContext *ctx) const
const Type *	GetType () const
void	Print () const
Expr *	TypeCheck ()
Expr *	Optimize ()
int	EstimateCost () const
std::pair< llvm::Constant *, bool >	GetConstant (const Type *type) const
Public Member Functions inherited from Expr
	Expr (SourcePos p, unsigned scid)
virtual llvm::Value *	GetLValue (FunctionEmitContext *ctx) const
virtual const Type *	GetLValueType () const
virtual Symbol *	GetBaseSymbol () const
virtual std::pair< llvm::Constant *, bool >	GetStorageConstant (const Type *type) const
Public Member Functions inherited from ASTNode
	ASTNode (SourcePos p, unsigned scid)
virtual	~ASTNode ()
unsigned	getValueID () const

Static Public Member Functions
static bool	classof (SizeOfExpr const *)
static bool	classof (ASTNode const *N)
Static Public Member Functions inherited from Expr
static bool	classof (Expr const *)
static bool	classof (ASTNode const *N)
Static Public Member Functions inherited from ASTNode
static bool	classof (ASTNode const *)

Public Attributes
Expr *	expr
const Type *	type
Public Attributes inherited from ASTNode
SourcePos	pos

Additional Inherited Members
Public Types inherited from ASTNode
enum	ASTNodeTy {   AddressOfExprID, AssignExprID, BinaryExprID, ConstExprID,   DerefExprID, PtrDerefExprID, RefDerefExprID, ExprListID,   FunctionCallExprID, FunctionSymbolExprID, IndexExprID, StructMemberExprID,   VectorMemberExprID, NewExprID, NullPointerExprID, ReferenceExprID,   SelectExprID, SizeOfExprID, SymbolExprID, SyncExprID,   TypeCastExprID, UnaryExprID, MaxExprID, AssertStmtID,   BreakStmtID, CaseStmtID, ContinueStmtID, DeclStmtID,   DefaultStmtID, DeleteStmtID, DoStmtID, ExprStmtID,   ForeachActiveStmtID, ForeachStmtID, ForeachUniqueStmtID, ForStmtID,   GotoStmtID, IfStmtID, LabeledStmtID, PrintStmtID,   ReturnStmtID, StmtListID, SwitchStmtID, UnmaskedStmtID }

Detailed Description

Expression that returns the size of the given expression or type in bytes.

Definition at line 608 of file expr.h.

Constructor & Destructor Documentation

SizeOfExpr() [1/2]

SizeOfExpr::SizeOfExpr	(	Expr *	e,
		SourcePos	p
	)

Definition at line 7520 of file expr.cpp.

SizeOfExpr() [2/2]

SizeOfExpr::SizeOfExpr	(	const Type *	t,
		SourcePos	p
	)

Definition at line 7522 of file expr.cpp.

References Type::ResolveUnboundVariability(), type, and Variability::Varying.

Member Function Documentation

classof() [1/2]

static bool SizeOfExpr::classof ( SizeOfExpr const *  )

inlinestatic

Definition at line 613 of file expr.h.

classof() [2/2]

static bool SizeOfExpr::classof ( ASTNode const *  N )

inlinestatic

Definition at line 614 of file expr.h.

References ASTNode::EstimateCost(), Expr::GetConstant(), Expr::GetType(), Expr::GetValue(), ASTNode::getValueID(), Expr::Optimize(), Expr::Print(), ASTNode::SizeOfExprID, and Expr::TypeCheck().

EstimateCost()

int SizeOfExpr::EstimateCost ( ) const

virtual

Estimate the execution cost of the node (not including the cost of the children. The value returned should be based on the COST_* enumerant values defined in ispc.h.

Implements ASTNode.

Definition at line 7570 of file expr.cpp.

GetConstant()

std::pair< llvm::Constant *, bool > SizeOfExpr::GetConstant ( const Type *  type ) const

virtual

If this is a constant expression that can be converted to a constant of the given type, this method should return the corresponding llvm::Constant value and a flag denoting if it's valid for multi-target compilation for use as an initializer of a global variable. Otherwise it should return the llvm::constant value as NULL.

Reimplemented from Expr.

Definition at line 7572 of file expr.cpp.

References Globals::ctx, expr, g, Target::getDataLayout(), Expr::GetType(), Target::IsGenericTypeLayoutIndeterminate(), Type::IsVaryingType(), Type::LLVMType(), Globals::target, and type.

GetType()

const Type * SizeOfExpr::GetType ( ) const

virtual

Returns the Type of the expression.

Implements Expr.

Definition at line 7539 of file expr.cpp.

References Opt::force32BitAddressing, g, Target::is32Bit(), Globals::opt, Globals::target, AtomicType::UniformUInt32, and AtomicType::UniformUInt64.

GetValue()

llvm::Value * SizeOfExpr::GetValue ( FunctionEmitContext *  ctx ) const

virtual

This is the main method for Expr implementations to implement. It should call methods in the FunctionEmitContext to emit LLVM IR instructions to the current basic block in order to generate an llvm::Value that represents the expression's value.

Implements Expr.

Definition at line 7526 of file expr.cpp.

References Globals::ctx, expr, g, FunctionEmitContext::GetCurrentBasicBlock(), Expr::GetType(), Type::LLVMType(), FunctionEmitContext::SetDebugPos(), Target::SizeOf(), Globals::target, and type.

Optimize()

Expr * SizeOfExpr::Optimize ( )

virtual

This method should perform early optimizations of the expression (constant folding, etc.) and return a pointer to the resulting expression. If an error is encountered during optimization, NULL should be returned.

Implements Expr.

Definition at line 7568 of file expr.cpp.

Print()

void SizeOfExpr::Print ( ) const

virtual

Prints the expression to standard output (used for debugging).

Implements Expr.

Definition at line 7544 of file expr.cpp.

References expr, Type::GetString(), Expr::GetType(), Expr::Print(), SourcePos::Print(), and type.

TypeCheck()

Expr * SizeOfExpr::TypeCheck ( )

virtual

This method should perform type checking of the expression and return a pointer to the resulting expression. If an error is encountered, NULL should be returned.

Implements Expr.

Definition at line 7555 of file expr.cpp.

References Error(), Type::GetString(), and type.

Member Data Documentation

expr

Expr* SizeOfExpr::expr

Definition at line 626 of file expr.h.

Referenced by GetConstant(), GetValue(), Print(), and WalkAST().

type

const Type* SizeOfExpr::type

Definition at line 627 of file expr.h.

Referenced by GetConstant(), GetValue(), Print(), SizeOfExpr(), and TypeCheck().

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

• expr.h
• expr.cpp