ReferenceExpr Class Reference

Expression that represents taking a reference of a (non-reference) variable. More...

#include <expr.h>

Inheritance diagram for ReferenceExpr:

Collaboration diagram for ReferenceExpr:

Public Member Functions
	ReferenceExpr (Expr *e, SourcePos p)
llvm::Value *	GetValue (FunctionEmitContext *ctx) const
const Type *	GetType () const
const Type *	GetLValueType () const
Symbol *	GetBaseSymbol () const
void	Print () const
Expr *	TypeCheck ()
Expr *	Optimize ()
int	EstimateCost () const
Public Member Functions inherited from Expr
	Expr (SourcePos p, unsigned scid)
virtual llvm::Value *	GetLValue (FunctionEmitContext *ctx) const
virtual std::pair< llvm::Constant *, bool >	GetStorageConstant (const Type *type) const
virtual std::pair< llvm::Constant *, bool >	GetConstant (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 (ReferenceExpr 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
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 represents taking a reference of a (non-reference) variable.

Definition at line 515 of file expr.h.

Constructor & Destructor Documentation

ReferenceExpr()

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

Definition at line 7138 of file expr.cpp.

References expr.

Member Function Documentation

classof() [1/2]

static bool ReferenceExpr::classof ( ReferenceExpr const *  )

inlinestatic

Definition at line 519 of file expr.h.

classof() [2/2]

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

inlinestatic

Definition at line 520 of file expr.h.

References ASTNode::EstimateCost(), Expr::GetBaseSymbol(), Expr::GetLValueType(), Expr::GetType(), Expr::GetValue(), ASTNode::getValueID(), Expr::Optimize(), Expr::Print(), ASTNode::ReferenceExprID, and Expr::TypeCheck().

EstimateCost()

int ReferenceExpr::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 7207 of file expr.cpp.

GetBaseSymbol()

Symbol * ReferenceExpr::GetBaseSymbol ( ) const

virtual

For expressions that have values based on a symbol (e.g. regular symbol references, array indexing, etc.), this returns a pointer to that symbol.

Reimplemented from Expr.

Definition at line 7171 of file expr.cpp.

References expr, and Expr::GetBaseSymbol().

GetLValueType()

const Type * ReferenceExpr::GetLValueType ( ) const

virtual

Returns the type of the value returned by GetLValueType(); this should be a pointer type of some sort (uniform or varying).

Reimplemented from Expr.

Definition at line 7184 of file expr.cpp.

References expr, Expr::GetType(), and PointerType::GetUniform().

GetType()

const Type * ReferenceExpr::GetType ( ) const

virtual

Returns the Type of the expression.

Implements Expr.

Definition at line 7173 of file expr.cpp.

References expr, and Expr::GetType().

Referenced by Print().

GetValue()

llvm::Value * ReferenceExpr::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 7140 of file expr.cpp.

References FunctionEmitContext::AllocaInst(), AssertPos, Globals::ctx, Module::errorCount, expr, g, Expr::GetLValue(), Expr::GetType(), Expr::GetValue(), Type::LLVMType(), m, FunctionEmitContext::SetDebugPos(), and FunctionEmitContext::StoreInst().

Optimize()

Expr * ReferenceExpr::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 7195 of file expr.cpp.

References expr.

Print()

void ReferenceExpr::Print ( ) const

virtual

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

Implements Expr.

Definition at line 7209 of file expr.cpp.

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

TypeCheck()

Expr * ReferenceExpr::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 7201 of file expr.cpp.

References expr.

Member Data Documentation

expr

Expr* ReferenceExpr::expr

Definition at line 531 of file expr.h.

Referenced by GetBaseSymbol(), GetLValueType(), GetType(), GetValue(), Optimize(), Print(), ReferenceExpr(), TypeCheck(), and WalkAST().

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

• expr.h
• expr.cpp