[PATCH] D134788: [ARM64EC][clang-cl] Add /arm64EC flag

[chenglin.bi via Phabricator via cfe-commits]

bcl5980 added a comment.

In D134788#3823181 <https://reviews.llvm.org/D134788#3823181>, @DavidSpickett wrote:

> Has Microsoft documented this option? Not doubting it exists but I mostly see how to use it rather than a specific page describing the option and its behaviour.
>
> Not a big deal but if there is one, please include a link to it in the commit message.

For now, I haven't found any document for this option. I can update later when Microsoft publish the information.


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