[PATCH] D70676: [DebugInfo] Don't repeatedly created undef DBG_VALUEs during machine-sinking

Mon Dec 9 05:40:49 PST 2019

uabelho added a comment.

In D70676#1775047 <https://reviews.llvm.org/D70676#1775047>, @jmorse wrote:

> Ouch, yeah, I can see exactly why that is: the sunk DBG_VALUE is copied from the old / "original" DBG_VALUE, which in the meantime has been copy-propagated. And through the copy propagation, it grows an extra piece of subregister information.
>
> This should be straightforwards to fix, I'll have a patch up shortly, thanks for the report!

Sounds good. Thanks!

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D70676/new/

https://reviews.llvm.org/D70676