[PATCH] D106450: [InstCombine] Fold (gep (oneuse(gep Ptr, Idx0)), Idx1) -> (gep Ptr, (add Idx0, Idx1)) (PR51069)

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

I suspect while we want to apply D107935 <https://reviews.llvm.org/D107935>, it's only half of the story - what if LICM didn't run yet?
We need some kind of an undo transform. (and no, `SeparateConstOffsetFromGEP` doesn't help, i tried)


Repository:
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  https://reviews.llvm.org/D106450/new/

https://reviews.llvm.org/D106450