[PATCH] D56151: [DebugInfo] PR40010: Avoid register coalesing altering DBG_VALUE valuations

[Jeremy Morse via Phabricator via llvm-commits]

jmorse planned changes to this revision.
jmorse added a comment.

Hmmm. In retrospect, aiming to cover all cases where there's a def of the dest-reg in between the last src-def and the DBG_VALUE means considering control flow, which I haven't done.

It's probably better for now to only account for circumstances where reg-coalescing makes the DBG_VALUE live again, and thus we can be 100% confident it does the wrong thing. That more closely matches the test case uploaded.


Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D56151/new/

https://reviews.llvm.org/D56151