> This PR suggests we can speed up `StringLatin1.regionMatchesCI` by applying > 'the oldest ASCII trick in the book'. > > The new static method `CharacterDataLatin1.equalsIgnoreCase` compares two > latin1 bytes for equality ignoring case. `StringLatin1.regionMatchesCI` is > updated to use `equalsIgnoreCase` > > To verify the correctness of `equalsIgnoreCase`, a new test is added to > `EqualsIgnoreCase` with an exhaustive verification that all 256x256 latin1 > code point pairs have an `equalsIgnoreCase` consistent with > Character.toUpperCase, Character.toLowerCase. > > Performance is tested for matching and mismatching cases of code point pairs > picked from the ASCII letter, ASCII number and latin1 letter ranges. Results > in the first comment below.
Eirik Bjorsnos has updated the pull request incrementally with two additional commits since the last revision: - Add @bug tag to EqualsIgnoreCase test for correct issue JDK-8302871 - Add @bug tag to EqualsIgnoreCase test for JDK-8302877 ------------- Changes: - all: https://git.openjdk.org/jdk/pull/12632/files - new: https://git.openjdk.org/jdk/pull/12632/files/84517102..03d3e2cb Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=12632&range=03 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12632&range=02-03 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/12632.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12632/head:pull/12632 PR: https://git.openjdk.org/jdk/pull/12632
