[PATCH] D152278: [SCEV] Compute SCEV for ashr(add(shl(x, n), c), m) instr triplet

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

I'm not sure why you're having so much trouble with the unequal shift math. The case of unequal shift amount is really just treating the shl as two shifts: one shift by an arbitrary amount, followed by one shift with shift amount equal to the ashr.

That said I'd be okay with a patch that bailed out on that case.


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https://reviews.llvm.org/D152278