[jdk17u-dev] RFR: 8320379: C2: Sort spilling/unspilling sequence for better ld/st merging into ldp/stp on AArch64 [v2]

[Xiaolong Peng]

On Fri, 7 Jun 2024 14:01:42 GMT, Xiaolong Peng <duke at openjdk.org> wrote:

>> Backport JDK-8320379: C2: Sort spilling/unspilling sequence for better ld/st merging into ldp/stp on AArch64
>> 
>> ### Verification
>> Tested on AWS Graviton instance by running ```JTREG_KEYWORDS="!headful & !external-dep & !printer" make test TEST=all```, only saw few test failures in CAInterop.java and compiler/intrinsics. 
>> 
>> - CAInterop tests are known intermittently failing tests, it should be fine to ignore. 
>> - The test failures from compiler/intrinsics has error message "Option 'UseSHA3Intrinsics' is expected to have 'true' value Option 'UseSHA3Intrinsics' should be enabled by default", it seems a bug but not related to the backport, will follow up if we need to create a bug.
>
> Xiaolong Peng has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:
> 
>  - Merge branch 'openjdk:master' into backport
>  - Backport 3ccd02f14211a3384f27fba1633f9d8421378c9a

Thanks for the review! I'll start to integrate.

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

PR Comment: https://git.openjdk.org/jdk17u-dev/pull/2535#issuecomment-2166107309