[PATCH] D70101: [X86] Fix the implementation of __readcr3/__writecr3 to work in 64-bit mode

[Reid Kleckner via Phabricator via cfe-commits]

rnk added a comment.

In D70101#1741565 <https://reviews.llvm.org/D70101#1741565>, @craig.topper wrote:

> So in order to match the long and int behavior, I need two different macros to replace the argument? I think __INTPTR_TYPE__ will return int on 32-bit targets so I can't use that for the long case. But maybe for the __int64?


Right, we can use `__INTPTR_TYPE__` for all `__writecr*` functions (they use int or long long), and our own macro (`__LPTRINT_TYPE__`?) for `__readcr*`. Make sure to undef it so it doesn't leak out of the header, similar to `__DEFAULT_FN_ATTRS`.


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