[PATCH] D73435: [ValueTracking] Add DemandedElts support to computeKnownBits/ComputeNumSignBits (PR36319)

Roman Lebedev via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Jan 31 11:30:42 PST 2020


lebedev.ri added inline comments.


================
Comment at: llvm/lib/Analysis/ValueTracking.cpp:174-175
+  for (int i = 0; i != NumMaskElts; ++i) {
+    if (!DemandedElts)
+      continue;
+    int M = Shuf->getMaskValue(i);
----------------
Wait, don't you want `DemandedElts[i]` here?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D73435/new/

https://reviews.llvm.org/D73435





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