org.jikesrvm.compilers.baseline

Class SwitchBranchProfile

java.lang.Object

org.jikesrvm.compilers.baseline.BranchProfile

org.jikesrvm.compilers.baseline.SwitchBranchProfile

public final class SwitchBranchProfile
extends BranchProfile

Profile data for a branch instruction.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) float[]	counts The number of times that the different arms of a switch were taken.

Fields inherited from class org.jikesrvm.compilers.baseline.BranchProfile

bci, freq

Constructor Summary

Constructors

Constructor and Description
SwitchBranchProfile(int bci, int[] cs, int start, int numEntries)

Method Summary

Modifier and Type	Method and Description
float	getCaseProbability(int n)
float	getDefaultProbability()
(package private) float	getProbability(int n)
private static float	sumCounts(int[] counts, int start, int numEntries)
String	toString()

Methods inherited from class org.jikesrvm.compilers.baseline.BranchProfile

countToFloat, getBytecodeIndex, getFrequency

Methods inherited from class java.lang.Object

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

Field Detail

counts

final float[] counts

The number of times that the different arms of a switch were taken. By convention, the default case is the last entry.

Constructor Detail

SwitchBranchProfile

SwitchBranchProfile(int bci,
                    int[] cs,
                    int start,
                    int numEntries)

Parameters:

bci - the bytecode index of the source branch instruction

cs - counts

start - idx of first entry in cs

numEntries - number of entries in cs for this switch

Method Detail

getDefaultProbability

public float getDefaultProbability()

getCaseProbability

public float getCaseProbability(int n)

getProbability

float getProbability(int n)

toString

public String toString()

Overrides:

toString in class Object

sumCounts

private static float sumCounts(int[] counts,
                               int start,
                               int numEntries)