[PATCH] D141129: [InstCombine] Use KnownBits for lshr/add -> (a + b < a)

Matt Arsenault via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Jan 12 08:25:53 PST 2023


arsenm added inline comments.


================
Comment at: llvm/test/Transforms/InstCombine/shift-add.ll:530
   %a16 = and i32 %a, 131071 ; 0x1FFFF
   %b16 = and i32 %b, 65535 ; 0x65535
   %add = add i32 %a16, %b16
----------------
spatel wrote:
> wrong hex value comment - 0xFFFF
There is a rarely used syntax to use hex constants in the IR but I never remember what it is


Repository:
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CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D141129/new/

https://reviews.llvm.org/D141129



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