[PATCH] D65143: [InstCombine] Fold '(-1 u/ %x) u< %y' to '@llvm.umul.with.overflow' + overflow bit extraction

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 212081.
lebedev.ri marked an inline comment as done.
lebedev.ri added a comment.

NFC, added a comment about increasing instruction count.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D65143/new/

https://reviews.llvm.org/D65143

Files:
  llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
  llvm/test/Transforms/InstCombine/unsigned-mul-lack-of-overflow-check-via-udiv-of-allones.ll
  llvm/test/Transforms/InstCombine/unsigned-mul-overflow-check-via-udiv-of-allones.ll
  llvm/test/Transforms/PhaseOrdering/unsigned-multiply-overflow-check.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D65143.212081.patch
Type: text/x-patch
Size: 13225 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20190728/b0384752/attachment.bin>