[PATCH] D142546: [ConstraintElimination] Decompose or instruction if the constant operand < 2^known_zero_bits of the first operand.

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n added inline comments.


================
Comment at: llvm/lib/Transforms/Scalar/ConstraintElimination.cpp:353
+    if (CI->getZExtValue() < pow(2, KnownBits.Zero.getZExtValue()))
+      return MergeResults(Op0, CI, IsSigned);
+  }
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Is it more useful to have an `add` than an `or`?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D142546/new/

https://reviews.llvm.org/D142546