[PATCH] D123742: llvm-reduce: Inform MRI of used phys reg masks

[Matthias Braun via Phabricator via llvm-commits]

MatzeB accepted this revision.
MatzeB added a comment.
This revision is now accepted and ready to land.

> I'm not sure how to directly observe this invisible cache for a test.

Only thing I can think of is to have the `MachineVerifier` check.

Comparing this with `MIRParserImpl::setupRegisterInfo` there also needs to be some handling for landing pads (`getCustomEHPadPreservedMask(MF)`)...

Either way this change only makes things better. LGTM


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https://reviews.llvm.org/D123742