[PATCH] D93617: [DemandedBits] Add a whitelist when computing demanded bits of Trunc Instruction

[guopeilin via Phabricator via llvm-commits]

guopeilin added a comment.

To avoid wrongly truncating operands, I add a whitelist for computing demanded bits of Instruction::Trunc's operands, that is we only reduce the demanded bits for those instructions that are always truncation friendly, such as ADD or SUB.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D93617/new/

https://reviews.llvm.org/D93617