[PATCH] D64645: DAG: Handle dbg_value for arguments split into multiple subregs

[Matt Arsenault via Phabricator via llvm-commits]

arsenm marked an inline comment as done.
arsenm added a comment.

In D64645#1589228 <https://reviews.llvm.org/D64645#1589228>, @jmorse wrote:

> I got curious; the scenario I described happens in test/DebugInfo/MSP430/sdagsplit-1.ll, where one of the operands to a pair is a load.


The effect of reporting this as 0 seems to be avoiding extra copies of the same DBG_VALUE


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