LowerInstrumentation (Jikes RVM API)

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org.jikesrvm.adaptive.recompilation.instrumentation
Class LowerInstrumentation

java.lang.Object
  org.jikesrvm.compilers.opt.driver.CompilerPhase
      org.jikesrvm.adaptive.recompilation.instrumentation.LowerInstrumentation

public class LowerInstrumentation
extends CompilerPhase
extends CompilerPhase

This phase takes converts "instrumentation instructions" that were inserted by previous instrumentation phases and "lowers" them, converting them to the actual instructions that perform the instrumentation.

Field Summary
`(package private) static boolean`	`DEBUG`

Fields inherited from class org.jikesrvm.compilers.opt.driver.CompilerPhase
`container`

Constructor Summary
`LowerInstrumentation()`

Method Summary
`String`	`getName()`
`(package private) static void`	`lowerInstrumentation(IR ir)` Actually perform the lowering
`CompilerPhase`	`newExecution(IR ir)` Return this instance of this phase.
`void`	`perform(IR ir)` Finds all instrumented instructions and calls the appropriate code to convert it into the real sequence of instrumentation instructions.
`boolean`	`shouldPerform(OptOptions options)` This method determines if the phase should be run, based on the Options object it is passed.

Methods inherited from class org.jikesrvm.compilers.opt.driver.CompilerPhase
`dumpIR, dumpIR, getClassConstructor, getCompilerPhaseConstructor, getCompilerPhaseConstructor, performPhase, printingEnabled, reportAdditionalStats, setContainer, verify`

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

Field Detail

DEBUG

static final boolean DEBUG

See Also:: Constant Field Values

Constructor Detail

LowerInstrumentation

public LowerInstrumentation()

Method Detail

newExecution

public CompilerPhase newExecution(IR ir)

Return this instance of this phase. This phase contains no per-compilation instance fields.

Overrides:: newExecution in class CompilerPhase

Parameters:: ir - not used
Returns:: this

shouldPerform

public final boolean shouldPerform(OptOptions options)

Description copied from class: CompilerPhase

This method determines if the phase should be run, based on the Options object it is passed. By default, phases are always performed. Subclasses should override this method if they only want to be performed conditionally.

Overrides:: shouldPerform in class CompilerPhase

Parameters:: options - the compiler options for the compilation
Returns:: true if the phase should be performed

getName

public final String getName()

Specified by:: getName in class CompilerPhase

Returns:: a String which is the name of the phase.

perform

public final void perform(IR ir)

Finds all instrumented instructions and calls the appropriate code to convert it into the real sequence of instrumentation instructions.

Specified by:: perform in class CompilerPhase

Parameters:: ir - the governing IR

lowerInstrumentation

static void lowerInstrumentation(IR ir)

Actually perform the lowering

Parameters:: ir - the governing IR