[PATCH] D31908: [AntiDepBreaker] Don't rename callee saved register restore instruction

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

In https://reviews.llvm.org/D31908#745271, @kparzysz wrote:

> In https://reviews.llvm.org/D31908#745251, @MatzeB wrote:
>
> > So for return blocks you have to take all CSR registers (depending on what you do with/without pristines). (See also https://reviews.llvm.org/D32464 where I partially rediscovered that fact).
>
>
> We (Hexagon) add all the non-pristine CSRs as implicit uses of the return instructions.


Yeah I like that way of modeling things explicitely. Unfortunately that is not how most llvm targets work today.


https://reviews.llvm.org/D31908