[llvm] [InstCombine] lshr (mul (X, 2^N + 1)), N -> add (X, lshr(X, N)) (PR #90295)

[Craig Topper via llvm-commits]

topperc wrote:

> > A generalization of the proposed x * 3/2 -> x + (x >> 1) transformation.
> 
> Proposed where?

This question was not answered. The way this is written implies there was some discussion separate from this PR that proposed something. There should be a link to that proposal or this commit message should be rephrased.

https://github.com/llvm/llvm-project/pull/90295