omjavaid added a comment.

In D96458#2566347 <https://reviews.llvm.org/D96458#2566347>, @labath wrote:

> I'm sorry, my response times are pretty slow these days.
>
> I'm thinking about this `ConfigureRegisterInfos` business. I get that the 
> vector length is variable, and so we need to refresh it after every stop. 
> However, the set of enabled extensions seems more static.
>
> Is it possible for that to change during the lifetime of the process? I'd 
> guess not, because otherwise we'd have to also resend the register lists 
> after every stop. And, if that's the case, I'm wondering if there's a way to 
> reflect this static-ness in the code. For example, by doing this setup in the 
> constructor, instead of a late `ConfigureRegisterInfos` call. IIRC, the 
> register contexts are created when the thread is stopped, so it should be 
> possible to fetch the information about supported registers quite early.
>
> What do you think?

Yes that is doable. I ll move ConfigureRegisterInfos part into constructor.



================
Comment at: lldb/source/Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h:17-18
 
+#define ARM64_REGS_CONFIG_DEFAULT 0x00
+#define ARM64_REGS_CONFIG_SVE 0x01
+
----------------
labath wrote:
> let's not use macros here.
Ack.


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https://reviews.llvm.org/D96458

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