[PATCH] D88316: [InstCombine] recognizeBSwapOrBitReverseIdiom - recognise zext(bswap(trunc(x))) patterns (PR39793)

Simon Pilgrim via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Sep 29 11:31:43 PDT 2020


RKSimon updated this revision to Diff 295067.
RKSimon added a comment.

I've rewritten the leading zero count code to support any type width and added a 'PR39793_bswap_u50_as_u16' test case


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D88316/new/

https://reviews.llvm.org/D88316

Files:
  llvm/lib/Transforms/Utils/Local.cpp
  llvm/test/Transforms/InstCombine/bswap.ll

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