[PATCH] D149421: [KnownBits] Improve `KnownBits::rem(X, Y)` in cases where we can deduce low-bits of output

Nikita Popov via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu May 4 01:31:03 PDT 2023


nikic added inline comments.


================
Comment at: llvm/lib/Support/KnownBits.cpp:558
+    APInt ZerosMask = LHS.Zero & Mask;
+    KnownBits KnownOut = Known;
+    KnownOut.One |= OnesMask;
----------------
You can drop the KnownOut variable here and just use Known.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D149421/new/

https://reviews.llvm.org/D149421



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