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8152910: Get performance improvement with Stable annotation

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Reviewed-by: darcy
This commit is contained in:
Peter Levart 2018-10-10 17:53:22 -07:00 committed by Brian Burkhalter
parent 635a875123
commit 2d7d9b8380
1 changed files with 5 additions and 2 deletions
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7
src/java.base/share/classes/java/math/BigInteger.java
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@ -41,6 +41,7 @@ import java.util.concurrent.ThreadLocalRandom;
import jdk.internal.math.DoubleConsts; import jdk.internal.math.DoubleConsts;
import jdk.internal.math.FloatConsts; import jdk.internal.math.FloatConsts;
import jdk.internal.HotSpotIntrinsicCandidate; import jdk.internal.HotSpotIntrinsicCandidate;
import jdk.internal.vm.annotation.Stable;
/** /**
* Immutable arbitrary-precision integers. All operations behave as if * Immutable arbitrary-precision integers. All operations behave as if
@ -1219,8 +1220,10 @@ public class BigInteger extends Number implements Comparable<BigInteger> {
* Initialize static constant array when class is loaded. * Initialize static constant array when class is loaded.
*/ */
private static final int MAX_CONSTANT = 16; private static final int MAX_CONSTANT = 16;
private static BigInteger posConst[] = new BigInteger[MAX_CONSTANT+1]; @Stable
private static BigInteger negConst[] = new BigInteger[MAX_CONSTANT+1]; private static final BigInteger[] posConst = new BigInteger[MAX_CONSTANT+1];
@Stable
private static final BigInteger[] negConst = new BigInteger[MAX_CONSTANT+1];
/** /**
* The cache of powers of each radix. This allows us to not have to * The cache of powers of each radix. This allows us to not have to