Class BasicRegisterMapper

java.lang.Object

com.android.dx.ssa.RegisterMapper

com.android.dx.ssa.BasicRegisterMapper

Direct Known Subclasses:

InterferenceRegisterMapper

public class BasicRegisterMapper
extends RegisterMapper

This class maps one register space into another, with each mapping built up individually and added via addMapping()

Constructor Summary

Constructors

Constructor	Description
BasicRegisterMapper(int countOldRegisters)	Creates a new OneToOneRegisterMapper.

Method Summary

Modifier and Type	Method	Description
void	addMapping(int oldReg, int newReg, int category)	Adds a mapping to the mapper.
int	getNewRegisterCount()	Gets the count of registers (really, the total register width, since category width is counted) in the new namespace.
RegisterSpec	map(RegisterSpec registerSpec)
int	oldToNew(int oldReg)	Returns the new-namespace mapping for the specified old-namespace register, or -1 if one exists.
String	toHuman()

Methods inherited from class RegisterMapper

map, map

Methods inherited from class Object

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

Constructor Details

BasicRegisterMapper

public BasicRegisterMapper(int countOldRegisters)

Creates a new OneToOneRegisterMapper.

Parameters:

countOldRegisters - the number of registers in the old name space

Method Details

getNewRegisterCount

public int getNewRegisterCount()

Gets the count of registers (really, the total register width, since category width is counted) in the new namespace.

Specified by:

getNewRegisterCount in class RegisterMapper

Returns:

≥ 0 width of new namespace.

map

public RegisterSpec map(RegisterSpec registerSpec)

Specified by:

map in class RegisterMapper

Parameters:

registerSpec - old register

Returns:

register in new space

oldToNew

public int oldToNew(int oldReg)

Returns the new-namespace mapping for the specified old-namespace register, or -1 if one exists.

Parameters:

oldReg - >= 0; old-namespace register

Returns:

new-namespace register or -1 if none

toHuman

public String toHuman()

addMapping

public void addMapping(int oldReg,
 int newReg,
 int category)

Adds a mapping to the mapper. If oldReg has already been mapped, overwrites previous mapping with new mapping.

Parameters:

oldReg - >= 0; old register

newReg - >= 0; new register

category - 1..2; width of reg