> This PR replaces construction of intermediate strings to be parsed with more 
> direct manipulation of numbers. It also has a more streamlined mechanism of 
> handling `Long.MIN_VALUE` when parsing longs by using `Long.parseUnsignedLong`
> 
> As a small side-effect it also eliminates the use of a cached StringBuilder 
> in DigitList.
> 
> Testing:
> - GHA
> - Local run of tier 2 and jtreg:jdk/java/text
> - New benchmark: DecimalFormatParseBench

Johannes Graham has updated the pull request incrementally with one additional 
commit since the last revision:

  fix overflow check

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/25644/files
  - new: https://git.openjdk.org/jdk/pull/25644/files/6953dcfc..6a072873

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25644&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25644&range=02-03

  Stats: 6 lines in 1 file changed: 4 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/25644.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25644/head:pull/25644

PR: https://git.openjdk.org/jdk/pull/25644

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