[PATCH] D149421: [KnownBits] Improve `KnownBits::rem(X, Y)` in cases where we can deduce low-bits of output
Noah Goldstein via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed May 3 10:14:37 PDT 2023
goldstein.w.n added inline comments.
================
Comment at: llvm/lib/Support/KnownBits.cpp:549
+static KnownBits remGetLowBits(const KnownBits &Known, const KnownBits &LHS,
+ const KnownBits &RHS) {
----------------
RKSimon wrote:
> Do we need Known?
Yeah. We don't have a "merge" function (to take known results from A and apply them to B).
There was a bit of conversation below (around L580) about it.
Repository:
rG LLVM Github Monorepo
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https://reviews.llvm.org/D149421/new/
https://reviews.llvm.org/D149421
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