File	Doc	Category	Size	Date	Package
SetFactory.java	API Doc	Android 1.5 API	3285	Wed May 06 22:41:02 BST 2009	com.android.dx.ssa

SetFactory

• java.lang.Object

Fields Summary
private static final int	DOMFRONT_SET_THRESHOLD_SIZE BitIntSet/ListIntSet threshold for dominance frontier sets. These sets are kept per basic block until phi placement and tend to be, like the CFG itself, very sparse at large sizes. A value of 3072 here is somewhere around 1.125mb of total bitset size.
private static final int	INTERFERENCE_SET_THRESHOLD_SIZE BitIntSet/ListIntSet threshold for interference graph sets. These sets are kept per register until register allocation is done. A value of 3072 here is somewhere around 1.125mb of total bitset size.
private static final int	LIVENESS_SET_THRESHOLD_SIZE BitIntSet/ListIntSet threshold for the live in/out sets kept by {@link SsaBasicBlock}. These are sets of SSA registers kept per basic block during register allocation. The total size of a bitset for this would be the count of blocks times the size of registers. The threshold value here is merely the register count, which is typically on the order of the block count as well.

Constructors Summary

Methods Summary
static com.android.dx.util.IntSet	makeDomFrontSet(int szBlocks) Make IntSet for the dominance-frontier sets. param szBlocks >=0; count of basic blocks in method return non-null; appropriate set /*package*/ return szBlocks <= DOMFRONT_SET_THRESHOLD_SIZE ? new BitIntSet(szBlocks) : new ListIntSet();
public static com.android.dx.util.IntSet	makeInterferenceSet(int countRegs) Make IntSet for the interference graph sets. Public because InterferenceGraph is in another package. param countRegs >=0; count of SSA registers used in method return non-null; appropriate set return countRegs <= INTERFERENCE_SET_THRESHOLD_SIZE ? new BitIntSet(countRegs) : new ListIntSet();
static com.android.dx.util.IntSet	makeLivenessSet(int countRegs) Make IntSet for register live in/out sets. param countRegs >=0; count of SSA registers used in method return non-null; appropriate set return countRegs <= LIVENESS_SET_THRESHOLD_SIZE ? new BitIntSet(countRegs) : new ListIntSet();