GenericRegisterPreferences (Jikes RVM API)

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org.jikesrvm.compilers.opt.regalloc
Class GenericRegisterPreferences

java.lang.Object
  org.jikesrvm.compilers.opt.regalloc.GenericRegisterPreferences

Direct Known Subclasses:: RegisterPreferences

public abstract class GenericRegisterPreferences
extends Object
extends Object

This class helps manage register preferences for coalescing and register allocation.

Field Summary
`private CoalesceGraph`	`graph` The main backing data structure;

Constructor Summary
`GenericRegisterPreferences()`

Method Summary
`protected void`	`addAffinity(int w, Register r1, Register r2)` Add a affinity of weight w between two registers.
`CoalesceGraph`	`getGraph()` Return the backing graph holding the preferences.
`abstract void`	`initialize(IR ir)` Set up register preferences for an IR.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

graph

private final CoalesceGraph graph

The main backing data structure;

Constructor Detail

GenericRegisterPreferences

public GenericRegisterPreferences()

Method Detail

addAffinity

protected void addAffinity(int w,
                           Register r1,
                           Register r2)

Add a affinity of weight w between two registers.

initialize

public abstract void initialize(IR ir)

Set up register preferences for an IR. This is machine-dependent.

getGraph

public CoalesceGraph getGraph()

Return the backing graph holding the preferences.