[PATCH] D14719: Track pristine registers in terms of register units.

[Quentin Colombet via llvm-commits]

qcolombet added a subscriber: qcolombet.
qcolombet added a comment.

Hi Krzysztof,

Unfortunately, I think this is not correct to use the RegUnit for now.
Matthias may remember the details, but right now, we have some weird situation where for instance XMM0 is pristine, but YMM0 is not, whereas they are actually the same regunit.

So, for the target, that means that it has to list all the registers that are actually preserved.

Note, my recollection may be wrong and in that case just ignore my comment, but please double check!

Thanks,
-Quentin


Repository:
  rL LLVM

http://reviews.llvm.org/D14719