[PATCH] D158839: [SDAG] Add SimplifyDemandedBits support for ISD::SPLAT_VECTOR

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Aug 25 07:08:26 PDT 2023


RKSimon added inline comments.


================
Comment at: llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp:1162
+
+    Known = TLO.DAG.computeKnownBits(Op, DemandedElts, Depth);
+    break;
----------------
Do you need this or can you just set it to KnownScl (with suitable truncation)?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D158839/new/

https://reviews.llvm.org/D158839



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