[jdk17u-dev] RFR: 8280124: Reduce branches decoding latin-1 chars from UTF-8 encoded bytes [v2]

[Boris Ulasevich]

> Backport e314a4cfda30cc680b3f0aef8c62b75ff81bdbb1

Boris Ulasevich has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  Backport e314a4cfda30cc680b3f0aef8c62b75ff81bdbb1

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Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/658/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/658/files/22d1ef90..02f69241

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=658&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=658&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/658.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/658/head:pull/658

PR: https://git.openjdk.org/jdk17u-dev/pull/658