coins.backend.regalo
Class RegisterAllocation

java.lang.Object
  coins.backend.regalo.RegisterAllocation

public class RegisterAllocation

extends java.lang.Object

Register allocation session object.

Nested Class Summary

(package private) static class

RegisterAllocation.CopyPair Copy pair

Field Summary

static coins.backend.regalo.RegisterAllocation.Trigger	trig Trigger class singleton.
(package private) static int	VAR_ASSIGNED
(package private) static int	VAR_COALESCED
(package private) static int	VAR_ONSTACK
(package private) static int	VAR_SPILLED
(package private) static int	VAR_WORKING

Constructor Summary

RegisterAllocation()

Method Summary

(package private) boolean	conservative(int x, int y) Return true if x and y are safely coalescable
(package private) boolean	isAlreadySplit(Symbol sym) Return true if symbol is already split variable (has two %s).
(package private) int	nameOf(int x) Return real name (coalesced) of x

Methods inherited from class java.lang.Object

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

Field Detail

trig

public static final coins.backend.regalo.RegisterAllocation.Trigger trig

Trigger class singleton.

VAR_WORKING

static final int VAR_WORKING

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Constant Field Values

VAR_ONSTACK

static final int VAR_ONSTACK

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Constant Field Values

VAR_COALESCED

static final int VAR_COALESCED

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Constant Field Values

VAR_SPILLED

static final int VAR_SPILLED

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Constant Field Values

VAR_ASSIGNED

static final int VAR_ASSIGNED

See Also:

Constant Field Values

Constructor Detail

RegisterAllocation

public RegisterAllocation()

Method Detail

conservative

boolean conservative(int x,
                     int y)

Return true if x and y are safely coalescable

nameOf

int nameOf(int x)

Return real name (coalesced) of x

isAlreadySplit

boolean isAlreadySplit(Symbol sym)

Return true if symbol is already split variable (has two %s).