[PATCH] D141075: [SelectionDAG] Implicitly truncate known bits in SPLAT_VECTOR

[Luke Lau via Phabricator via llvm-commits]

luke marked 2 inline comments as done.
luke added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:2984
+    // SPLAT_VECTOR.
+    Known = computeKnownBits(SrcOp, Depth + 1).extractBits(BitWidth, 0);
     break;
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craig.topper wrote:
> Why `extractBits` instead of `trunc`?
Thanks, that was exactly the function I was looking for


Repository:
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  https://reviews.llvm.org/D141075/new/

https://reviews.llvm.org/D141075