[PATCH] D145540: [InstCombine] Reduce absolute diff from min+max+sub

[Jun Zhang via Phabricator via llvm-commits]

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This patch implement fold: max(a,b) nsw/nuw - min(a,b) --> abs(a nsw - b)

Fixes: https://github.com/llvm/llvm-project/issues/61228

Signed-off-by: Jun Zhang <jun at junz.org>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D145540

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
  llvm/test/Transforms/InstCombine/sub-minmax.ll

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