[PATCH] D47113: [CVP] Teach CorrelatedValuePropagation to reduce the width of lshr instruction.

Justin Lebar via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon May 21 08:48:16 PDT 2018


jlebar added a comment.

In https://reviews.llvm.org/D47113#1106541, @bixia wrote:

> InstCombiner::visitShl performs similar narrowing without checking user count and can increase the total number to ZExt instructions.


Sounds like a bug then, per @spatel's comment quoted in https://reviews.llvm.org/D47113#1106261?


Repository:
  rL LLVM

https://reviews.llvm.org/D47113





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