hg: jdk/sandbox: 8241055: Regex Grapheme Matcher Performance Depends too much on Total Input Sequence Size

[chris.hegarty at oracle.com]

Changeset: 5d8f906a24c5
Author:    naoto
Date:      2020-04-16 16:09 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/5d8f906a24c5

8241055: Regex Grapheme Matcher Performance Depends too much on Total Input Sequence Size
Reviewed-by: naoto
Contributed-by: philipp.kunz at paratix.ch

! src/java.base/share/classes/java/util/regex/Grapheme.java
! src/java.base/share/classes/java/util/regex/Pattern.java
! test/jdk/java/util/regex/RegExTest.java
! test/micro/org/openjdk/bench/java/util/regex/PatternBench.java