git: openjdk/jdk11u-dev: 8231717: Improve performance of charset decoding when charset is always compactable

[Christoph Langer]

Changeset: 34d1c924
Author:    Dmitry Chuyko <dchuyko at openjdk.org>
Committer: Christoph Langer <clanger at openjdk.org>
Date:      2021-06-24 21:55:27 +0000
URL:       https://git.openjdk.java.net/jdk11u-dev/commit/34d1c9245c55cb7a99dcae8fe96fa203554197b0

8231717: Improve performance of charset decoding when charset is always compactable

Backport-of: 0dbfc97c05218ffd10242901d73c0715ccb53bf3

! make/data/charsetmapping/SingleByte-X.java.template
! make/jdk/src/classes/build/tools/charsetmapping/SBCS.java
! src/java.base/share/classes/java/lang/StringCoding.java
! src/java.base/share/classes/sun/nio/cs/ArrayDecoder.java
! src/java.base/share/classes/sun/nio/cs/SingleByte.java