RFR: 8317575: AArch64: C2_MacroAssembler::fast_lock uses rscratch1 for cmpxchg result

[Andrew Haley]

On Thu, 5 Oct 2023 08:08:31 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

> Please review this removal a potentially problematic usage of rscratch1 in C2_MacroAssembler::fast_lock.

Marked as reviewed by aph (Reviewer).

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

PR Review: https://git.openjdk.org/jdk/pull/16049#pullrequestreview-1674615511