[PATCH] D117957: [AVR] Remove unused register scavenger

[Ben Shi via Phabricator via llvm-commits]

benshi001 accepted this revision.
benshi001 added a comment.
This revision is now accepted and ready to land.

LGTM. Thanks.



================
Comment at: llvm/lib/Target/AVR/AVRInstrInfo.td:1682
 
+    let Constraints = "@earlyclobber $dst" in
     def LPMWRdZ : Pseudo<(outs DREGS
----------------
aykevl wrote:
> I tried `$dst != $z` but that led to a "ran out of registers during register allocation" assert. So I'm using `@earlyclobber` instead (even though it is slightly more conservative).
I think `@earlyclobber` is fine.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D117957/new/

https://reviews.llvm.org/D117957