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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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8
jdk/src/java.base/share/classes/java/lang/StringBuffer.java
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@ -26,6 +26,7 @@
package java.lang;
import java.util.Arrays;
import jdk.internal.HotSpotIntrinsicCandidate;
/**
* A thread-safe, mutable sequence of characters.
@ -112,6 +113,7 @@ import java.util.Arrays;
* Constructs a string buffer with no characters in it and an
* initial capacity of 16 characters.
*/
@HotSpotIntrinsicCandidate
public StringBuffer() {
super(16);
}
@ -124,6 +126,7 @@ import java.util.Arrays;
* @exception NegativeArraySizeException if the {@code capacity}
* argument is less than {@code 0}.
*/
@HotSpotIntrinsicCandidate
public StringBuffer(int capacity) {
super(capacity);
}
@ -135,6 +138,7 @@ import java.util.Arrays;
*
* @param str the initial contents of the buffer.
*/
@HotSpotIntrinsicCandidate
public StringBuffer(String str) {
super(str.length() + 16);
append(str);
@ -271,6 +275,7 @@ import java.util.Arrays;
}
@Override
@HotSpotIntrinsicCandidate
public synchronized StringBuffer append(String str) {
toStringCache = null;
super.append(str);
@ -382,6 +387,7 @@ import java.util.Arrays;
}
@Override
@HotSpotIntrinsicCandidate
public synchronized StringBuffer append(char c) {
toStringCache = null;
super.append(c);
@ -389,6 +395,7 @@ import java.util.Arrays;
}
@Override
@HotSpotIntrinsicCandidate
public synchronized StringBuffer append(int i) {
toStringCache = null;
super.append(i);
@ -670,6 +677,7 @@ import java.util.Arrays;
}
@Override
@HotSpotIntrinsicCandidate
public synchronized String toString() {
if (toStringCache == null) {
toStringCache = Arrays.copyOfRange(value, 0, count);