[jdk11u-dev] RFR: 8270533: AArch64: size_fits_all_mem_uses should return false if its output is a CAS

[Goetz Lindenmaier]

On Mon, 1 Nov 2021 18:13:57 GMT, Alexey Pavlyutkin <duke at openjdk.java.net> wrote:

> I'd like to backport JDK-8190753 to jdk11u
> 
> The fix prevents using a result of Add-n-Shift operation as an input for CAS operation that takes only register operands for Aarch64
> 
> The original patch applied cleanly
> 
> Testing: original patch does not have verification tests. Regression: hotspot_tier2 (arm64/20.04 LTS)

Hi Alexey, you need to add a "Fix Request 11u" comment in the JBS issue, please. See also http://openjdk.java.net/projects/jdk-updates/approval.html Rule 1.

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/573