[PATCH] D108643: Introduce _BitInt, deprecate _ExtInt

[H.J Lu via Phabricator via cfe-commits]

hjl.tools added a comment.

>> The choice that high bits are unspecified rather than extended is an interesting one.  Can you speak to that?  That's good for +, -, *, &, |, ^, <<, and narrowing conversions, but bad for ==, <, /, >>, and widening conversions.
>
> I've added @hjl.tools to the review for his opinions, as he was the primary driver for the x64 ABI proposal. HJ, can you help me out here?

Please follow up x86-64 psABI proposal with any feedbacks:

https://groups.google.com/g/x86-64-abi/c/XQiSj-zU3w8


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D108643/new/

https://reviews.llvm.org/D108643