Class Swizzler

java.lang.Object

EDU.purdue.cs.bloat.tree.Swizzler

public class Swizzler
extends Object

Swizzler represents an induction variable that is used as an index into an array. Analysis can be done to determine if array swizzle (aswizzle) instruction(s) can be hoisted out of the loop.

See Also:

• InductionVarAnalyzer

Constructor Summary

Constructors

Constructor	Description
Swizzler(Expr var, Expr tgt, Expr val, Block phiblock)	Constructor.

Method Summary

Modifier and Type	Method	Description
Expr	array()
SCStmt	aswizzle()
Expr	end_val()
Expr	ind_var()
Expr	init_val()
Block	phi_block()
void	set_array(Expr a)
void	set_aswizzle(SCStmt sc)
void	set_end_val(Expr end)	Sets the ending value for the induction variable.
Expr	target()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Swizzler

public Swizzler(Expr var,
 Expr tgt,
 Expr val,
 Block phiblock)

Constructor.

Parameters:

var - Induction variable. (An index variable for an array.)

tgt - Target of the phi statement that defines the induction variable.

val - Initial value of the induction variable.

phiblock - The block in which the phi statement resides.

Method Details

set_end_val

public void set_end_val(Expr end)

Sets the ending value for the induction variable.

Parameters:

end - The final value the induction variable will take on.

set_array

public void set_array(Expr a)

Parameters:

a - The array that is indexed by the induction variable.

set_aswizzle

public void set_aswizzle(SCStmt sc)

Parameters:

sc - The aswizzle statement that could be removed from the block.

ind_var

public Expr ind_var()

target

public Expr target()

init_val

public Expr init_val()

end_val

public Expr end_val()

array

public Expr array()

phi_block

public Block phi_block()

aswizzle

public SCStmt aswizzle()