[PATCH] D124182: [AMDGPU] Combine DPP mov even if old reg def is in different BB

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

In D124182#3465094 <https://reviews.llvm.org/D124182#3465094>, @arsenm wrote:

> The worry is changes in exec between the def and the use

There is llvm::execMayBeModifiedBeforeUse() in the SIInstrInfo.cpp. Maybe it shall be used here?


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https://reviews.llvm.org/D124182