[PATCH] D88072: [X86] Improve demanded bits for X86ISD::BEXTR.

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/lib/Target/X86/X86ISelLowering.cpp:38352
+        Known = Known.zextOrTrunc(BitWidth);
+        return false;
+      }
----------------
RKSimon wrote:
> Maybe just call computeKnownBits to avoid code duplication?
Won’t that be more costly for compile time?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D88072/new/

https://reviews.llvm.org/D88072