[PATCH] D125511: [InstCombine] Merging constant-indexed GEP of GEP in both directions

[Nikita Popov via Phabricator via llvm-commits]

nikic added a comment.

I'm not a big fan of the "try to combine in both directions approach". It will still miss cases where neither direction works, but the GEPs can still be folded. Something like this should work for all constant GEPs: https://gist.github.com/nikic/8a1a82382468c88f19094d4b0a2f547c


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