[jdk21u-dev] RFR: 8317575: AArch64: C2_MacroAssembler::fast_lock uses rscratch1 for cmpxchg result

[Severin Gehwolf]

On Wed, 21 Aug 2024 22:00:46 GMT, Boris Ulasevich <bulasevich at openjdk.org> wrote:

> This is a clean backport to avoid a potentially rscratch1 register clobbering in C2_MacroAssembler::fast_lock.
> 
> Testing: jtreg tier1-3 on linux-aarch64.

Please turn on GHA testing on your fork.

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/941#issuecomment-2304222835