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8333893: Optimization for StringBuilder append boolean & null

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Reviewed-by: liach
This commit is contained in:
Shaojin Wen 2024-11-05 15:05:33 +00:00
parent c33a8f52b6
commit 5890d9438b
5 changed files with 113 additions and 52 deletions
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32
src/java.base/share/classes/java/lang/StringUTF16.java
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@ -43,7 +43,6 @@ import static java.lang.String.UTF16;
import static java.lang.String.LATIN1;
final class StringUTF16 {
// Return a new byte array for a UTF16-coded string for len chars
// Throw an exception if out of range
public static byte[] newBytesFor(int len) {
@ -1548,27 +1547,20 @@ final class StringUTF16 {
return true;
}
public static int putCharsAt(byte[] value, int i, char c1, char c2, char c3, char c4) {
int end = i + 4;
checkBoundsBeginEnd(i, end, value);
putChar(value, i++, c1);
putChar(value, i++, c2);
putChar(value, i++, c3);
putChar(value, i++, c4);
assert(i == end);
return end;
static void putCharsAt(byte[] val, int index, int c1, int c2, int c3, int c4) {
assert index >= 0 && index + 3 < length(val) : "Trusted caller missed bounds check";
putChar(val, index , c1);
putChar(val, index + 1, c2);
putChar(val, index + 2, c3);
putChar(val, index + 3, c4);
}
public static int putCharsAt(byte[] value, int i, char c1, char c2, char c3, char c4, char c5) {
int end = i + 5;
checkBoundsBeginEnd(i, end, value);
putChar(value, i++, c1);
putChar(value, i++, c2);
putChar(value, i++, c3);
putChar(value, i++, c4);
putChar(value, i++, c5);
assert(i == end);
return end;
static void putCharsAt(byte[] val, int index, int c1, int c2, int c3, int c4, int c5) {
putChar(val, index , c1);
putChar(val, index + 1, c2);
putChar(val, index + 2, c3);
putChar(val, index + 3, c4);
putChar(val, index + 4, c5);
}
public static char charAt(byte[] value, int index) {