[PATCH] D59626: Add MachineDCE pass after RenameIndependentSubregs

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

In D59626#1449373 <https://reviews.llvm.org/D59626#1449373>, @rampitec wrote:

> Ping.
>
> Since the primary goal of the DCE here is to clean dead subregs I can bail this pass invocation if subreg liveness if not supported by target. What do you think?


In fact the BE affected most if x86. Adding @craig.topper as a reviewer. At the same time x86 does not override subRegLivenessEnabled, so it should not be limited to targets with subreg liveness enabled only.


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  https://reviews.llvm.org/D59626/new/

https://reviews.llvm.org/D59626