[PATCH] D106408: Allow rematerialization of virtual reg uses

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec added a comment.

In D106408#3015945 <https://reviews.llvm.org/D106408#3015945>, @rampitec wrote:

> I was experimenting with avoiding the division by 2 at the end of the `VirtRegAuxInfo::weightCalcHelper` if there are vreg uses, but actually got worse results. Since this is a heuristic calculating weights it might make sense to give it some little extra weight for every vreg use I guess.

Something like this maybe if you have a good test for it: https://reviews.llvm.org/differential/diff/374324/

Obviously 0.01 there is a pure guesstimate.


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https://reviews.llvm.org/D106408