org.jikesrvm.compilers.opt.lir2mir
Class SplitBasicBlock

java.lang.Object
  org.jikesrvm.compilers.opt.driver.CompilerPhase
      org.jikesrvm.compilers.opt.lir2mir.SplitBasicBlock

public final class SplitBasicBlock
extends CompilerPhase

Splits a large basic block into smaller ones with size <= OptOptions.L2M_MAX_BLOCK_SIZE

SplitBasicBlock

public SplitBasicBlock()

getName

public String getName()

Specified by:

getName in class CompilerPhase

Returns:

a String which is the name of the phase.

newExecution

public CompilerPhase newExecution(IR ir)

Description copied from class: CompilerPhase

This method is called immediately before performPhase. Phases that do not need to create a new instance for each execution may override this method to return this, but this must be done carefully! Classes that don't override this method need to override getClassConstructor.

Overrides:

newExecution in class CompilerPhase

Parameters:

ir - the IR that is about to be passed to performPhase

Returns:

an opt compiler phase on which performPhase may be invoked.

perform

public void perform(IR ir)

Description copied from class: CompilerPhase

This is the method that actually does the work of the phase.

Specified by:

perform in class CompilerPhase

Parameters:

ir - the IR on which to apply the phase

splitEachBlock

BasicBlock splitEachBlock(BasicBlock bb,
                          IR ir)

Splits basic block

Returns:

null if no splitting is done, returns the second block if splitting is done.