[jdk11u-dev] RFR: 8248238: Implementation: JEP 388: Windows AArch64 Support [v12]

[Andrew Haley]

On Tue, 23 Nov 2021 22:06:28 GMT, Reka Kovacs <rkovacs at openjdk.org> wrote:

> [Here](https://gist.github.com/rnkovacs/edfa07b7b86ae720c26e788db230f872)'s a list of the failing hotspot tests.
> 
> We've been battling issues with both Cygwin and MSVC. We've reported a [bad arm64 codegen bug](https://developercommunity.visualstudio.com/t/arm64-incorrect-code-gen-when-compiler-decides-to/1541140) that causes assert failures in a bunch of tests, and is still present in VS 2022 (closed as fixed incorrectly - we're contacting the engineers directly). We got our results by using a [workaround](https://gist.github.com/rnkovacs/8b67a8513d19b43343185dc5f86fe3fe) that seems to fix the issue.

I don't see any reason why we'd reject your workaround, so please add it to this PR.

I'll approve this _pro tem_  without the Serviceability fixes, but I don't want them to be neglected. Please let us know about your plans to get Serviceability done.

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/301