/**
* This intrinsic is useful for the case where we know something statically about one of the
* inputs but not the other.
*/
@Snippet
public static void arraycopyPredictedExactIntrinsic(
Object src,
int srcPos,
Object dest,
int destPos,
int length,
@ConstantParameter JavaKind elementKind,
@ConstantParameter SnippetCounter counter,
@ConstantParameter SnippetCounter copiedCounter) {
Object nonNullSrc = GraalDirectives.guardingNonNull(src);
Object nonNullDest = GraalDirectives.guardingNonNull(dest);
KlassPointer srcHub = loadHub(nonNullSrc);
KlassPointer destHub = loadHub(nonNullDest);
if (probability(SLOW_PATH_PROBABILITY, srcHub != destHub)) {
DeoptimizeNode.deopt(DeoptimizationAction.None, DeoptimizationReason.RuntimeConstraint);
}
checkLimits(nonNullSrc, srcPos, nonNullDest, destPos, length);
counter.inc();
copiedCounter.add(length);
ArrayCopyCallNode.arraycopy(nonNullSrc, srcPos, nonNullDest, destPos, length, elementKind);
if (length == 0) {
zeroLengthDynamicCounter.inc();
} else {
nonZeroLengthDynamicCounter.inc();
nonZeroLengthDynamicCopiedCounter.add(length);
}
}
@Snippet
public static void arraycopyExactIntrinsic(
Object src,
int srcPos,
Object dest,
int destPos,
int length,
@ConstantParameter JavaKind elementKind,
@ConstantParameter SnippetCounter counter,
@ConstantParameter SnippetCounter copiedCounter) {
Object nonNullSrc = GraalDirectives.guardingNonNull(src);
Object nonNullDest = GraalDirectives.guardingNonNull(dest);
checkLimits(nonNullSrc, srcPos, nonNullDest, destPos, length);
counter.inc();
copiedCounter.add(length);
ArrayCopyCallNode.arraycopy(nonNullSrc, srcPos, nonNullDest, destPos, length, elementKind);
if (length == 0) {
zeroLengthDynamicCounter.inc();
} else {
nonZeroLengthDynamicCounter.inc();
nonZeroLengthDynamicCopiedCounter.add(length);
}
}
