[PATCH] D133118: Fix invalid llvm.dbg.declare after instcombine (#56807)

[Orlando Cazalet-Hyams via Phabricator via llvm-commits]

Orlando added a comment.

The first operand should indeed remain undef. Looks like this is caused by a bug I introduced (for assignment tracking only) in `DbgVariableIntrinsic::replaceVariableLocationOp` - let me get a patch + test together.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D133118/new/

https://reviews.llvm.org/D133118