at.dms.kjc.sir.lowering
Class Vectorize

java.lang.Object
  at.dms.kjc.sir.lowering.Vectorize

public class Vectorize
extends Object

Transform methods for a filter to use vector types as appropriate.

• Identify vectors: values from peek/pop, values to push.
• Introduce new tmp for peek/pop
• Replace peek of data with N peeks into tmp.
• Replace pop of data with pop and N-1 peeks into tmp.
• Replace push of data with and N pokes.
• Introduce correction for pokes at end of method. (need to buffer pokes if pushing involves communication, just need to update a pointer if output to a buffer.)
• For fields needing vector values: calculate scalar then widen into a new variable.

Known preconditions: no vector type will be be required for I/O, for branch condition, for array or peek offset calculation, as per Vectorizable.vectorizable(SIRFilter) Arguments to peeks, pushes are purely functional: no side effects. In fact they are either constant, local variable access, field access or array access.
Limitation: Initializing arrays in fields not handled at all.

Author:

Allyn Dimock

Field Summary

static boolean

debugging print out names of variables that are given vector type

Constructor Summary

Vectorize()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

debugging

public static boolean debugging

print out names of variables that are given vector type

Constructor Detail

Vectorize

public Vectorize()