[PATCH] D37899: [SystemZ] Implement shouldCoalesce() to help regalloc to avoid running out of registers with GR128 regs

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet added a comment.

> This patch introduces an extra parameter to shouldCoalesce() (LiveIntervals*). Does this look acceptable?

Looks fine to me.

I would use a reference if we don't allow it to be null or update the comment to say that this may be null.


https://reviews.llvm.org/D37899