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8076112: Add @HotSpotIntrinsicCandidate annotation to indicate methods for which Java Runtime has intrinsics

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Annotate possibly intrinsified methods with @HotSpotIntrinsicCandidate. Add checks omitted by intrinsics to the library code. Add CheckIntrinsics flags to check consistency of intrinsics.

Reviewed-by: jrose, kvn, thartmann, vlivanov, abuckley, darcy, ascarpino, briangoetz, alanb, aph, dnsimon
This commit is contained in:
Zoltan Majo 2015-07-03 07:23:45 +02:00
parent ea0323cf1a
commit 94d36649af
41 changed files with 667 additions and 30 deletions
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6
jdk/src/java.base/share/classes/java/lang/Float.java
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@ -28,6 +28,7 @@ package java.lang;
import sun.misc.FloatingDecimal;
import sun.misc.FloatConsts;
import sun.misc.DoubleConsts;
import jdk.internal.HotSpotIntrinsicCandidate;
/**
* The {@code Float} class wraps a value of primitive type
@ -429,6 +430,7 @@ public final class Float extends Number implements Comparable<Float> {
* @return a {@code Float} instance representing {@code f}.
* @since 1.5
*/
@HotSpotIntrinsicCandidate
public static Float valueOf(float f) {
return new Float(f);
}
@ -622,6 +624,7 @@ public final class Float extends Number implements Comparable<Float> {
*
* @return the {@code float} value represented by this object
*/
@HotSpotIntrinsicCandidate
public float floatValue() {
return value;
}
@ -740,6 +743,7 @@ public final class Float extends Number implements Comparable<Float> {
* @param value a floating-point number.
* @return the bits that represent the floating-point number.
*/
@HotSpotIntrinsicCandidate
public static int floatToIntBits(float value) {
if (!isNaN(value)) {
return floatToRawIntBits(value);
@ -782,6 +786,7 @@ public final class Float extends Number implements Comparable<Float> {
* @return the bits that represent the floating-point number.
* @since 1.3
*/
@HotSpotIntrinsicCandidate
public static native int floatToRawIntBits(float value);
/**
@ -843,6 +848,7 @@ public final class Float extends Number implements Comparable<Float> {
* @return the {@code float} floating-point value with the same bit
* pattern.
*/
@HotSpotIntrinsicCandidate
public static native float intBitsToFloat(int bits);
/**