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8325169: Reduce String::indexOf overheads

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Reviewed-by: rriggs, rgiulietti, mli
This commit is contained in:
Claes Redestad 2024-02-05 16:30:05 +00:00
parent 89e6a02e3b
commit 19e92201b4
4 changed files with 23 additions and 19 deletions
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8
src/java.base/share/classes/java/lang/String.java
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@ -2444,7 +2444,8 @@ public final class String
* {@code -1} if the character does not occur.
*/
public int indexOf(int ch) {
return indexOf(ch, 0);
return isLatin1() ? StringLatin1.indexOf(value, ch, 0, value.length)
: StringUTF16.indexOf(value, ch, 0, value.length >> 1);
}
/**
@ -2500,8 +2501,9 @@ public final class String
* {@code fromIndex} were larger than the string length, or were negative.
*/
public int indexOf(int ch, int fromIndex) {
return isLatin1() ? StringLatin1.indexOf(value, ch, fromIndex, length())
: StringUTF16.indexOf(value, ch, fromIndex, length());
fromIndex = Math.max(fromIndex, 0);
return isLatin1() ? StringLatin1.indexOf(value, ch, Math.min(fromIndex, value.length), value.length)
: StringUTF16.indexOf(value, ch, Math.min(fromIndex, value.length >> 1), value.length >> 1);
}
/**