[PATCH] D104472: [ValueTracking] look through bitcast of vector in computeKnownBits

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Jun 18 01:38:35 PDT 2021


RKSimon added a comment.

Thanks again for looking at this!



================
Comment at: llvm/lib/Analysis/ValueTracking.cpp:1217
+        Known.One |= KnownSrc.One.zext(BitWidth).shl(ShiftAmt);
+        Known.Zero |= KnownSrc.Zero.zext(BitWidth).shl(ShiftAmt);
+      }
----------------
Can you use APInt::insertBits here ?


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  https://reviews.llvm.org/D104472/new/

https://reviews.llvm.org/D104472



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