[PATCH] D55372: [DebugInfo] Emit "undef" DBG_VALUEs when SDNodes are optimised out

[Adrian Prantl via Phabricator via llvm-commits]

aprantl added a comment.

Looks like this caused a noticeable shrinking of location lists, but that means we're getting more accurate: http://lnt.llvm.org/db_default/v4/nts/graph?plot.0=1357.1607042.4&highlight_run=117379 !


Repository:
  rL LLVM

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  https://reviews.llvm.org/D55372/new/

https://reviews.llvm.org/D55372