[PATCH] D22045: [X86] Support of no_caller_saved_registers attribute (Clang part)

[Matthias Braun via Phabricator via cfe-commits]

MatzeB added a comment.

In https://reviews.llvm.org/D22045#739627, @MatzeB wrote:

> Just out of interested: I can see how `__attribute__ ((interrupt))` is useful, but in what situations would you use `no_caller_saved_registers`?


Actually please answer this question by documenting the attribute in `docs/LangRef.rst` in the llvm part of the changes.


https://reviews.llvm.org/D22045