[PATCH] D17591: AMDGPU/SI: Enable frame index scavenging during PrologEpilogueInserter

[Tom Stellard via llvm-commits]

tstellarAMD added a comment.

In http://reviews.llvm.org/D17591#364828, @arsenm wrote:

> LGTM. I looked at doing this before and thought it was pointless because seems like it's just deferring the scavengeRegister call


It seems to do a better job of using the emergency stack slot when you do it this way.  Otherwise I was having to add multiple emergency stack slots to the register scavenger.


Repository:
  rL LLVM

http://reviews.llvm.org/D17591