[PATCH] D74931: [Dominators] Use Instruction::comesBefore for block-local queries, NFC

[Reid Kleckner via Phabricator via llvm-commits]

rnk accepted this revision.
rnk added a comment.

lgtm

I don't think it got lost in the rebase, I just never actually did this, the obvious thing. The next cleanup is to get rid of `OrderedInstructions` which is now a glorified wrapper of `DominatorTree`.


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