4a7ed1fab7
Introduce a mechanism for marking architecture-specific Ops unsafe. And mark ones that use REGTMP on ARM64, as for async preemption we will be using REGTMP as a temporary register in the injected call. Change-Id: I8ff22e87d8f9cb10d02a2f0af7c12ad6d7d58f54 Reviewed-on: https://go-review.googlesource.com/c/go/+/203459 Run-TryBot: Cherry Zhang <cherryyz@google.com> Reviewed-by: Austin Clements <austin@google.com>
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