[PATCH] D150575: [CodeGen] Make TargetRegisterInfo::supportsBackwardScavenger return true by default

[Jay Foad via Phabricator via llvm-commits]

foad added a comment.

> How difficult would it be for downstream targets to figure out the necessary change if they relied on the default `false` value?

That depends. If they have good lit test coverage then some tests will fail or crash.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D150575/new/

https://reviews.llvm.org/D150575