[jdk17u-dev] RFR: 8274243: Implement fast-path for ASCII-compatible CharsetEncoders on aarch64

[Ningsheng Jian]

On Tue, 23 May 2023 04:09:46 GMT, Ningsheng Jian <njian at openjdk.org> wrote:

> Clean backport of JDK-8274243. Related x86 version (JDK-8274242) has been backported to 17.02 and ppc version (JDK-8277846) backported to 17.03.
> 
> I found this patch while trying to backport my JDK-8307572. Without this backport, JDK-8307572 will not be a clean backport to jdk17u.
> 
> The backport of JDK-8274242 (x86), already contains the java and c2 common part, so we can see performance improvement on AArch64 with this patch.
> 
> No new jtreg test failure with both release and fastdebug build.

Got approval in JBS.

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PR Comment: https://git.openjdk.org/jdk17u-dev/pull/1386#issuecomment-1566381710