[PATCH] D55909: [ARMISelLowering] Recompute liveins after introducing new MBBs.

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

I'm a little concerned computeAndAddLiveIns is more expensive than checkAndUpdateCPSRKill. In theory, they're both quadratic, but in practice I would expect checkAndUpdateCPSRKill is much cheaper: it only tracks one register, and quits immediately when it finds a def of CPSR.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55909/new/

https://reviews.llvm.org/D55909