[all-commits] [llvm/llvm-project] 0d1e76: [InstSimplify] Refine `abs(min/undef, true)` to `p...

[Pedro Lobo via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0d1e762da7ad22e31e98cf372a692027ff0bb610
      https://github.com/llvm/llvm-project/commit/0d1e762da7ad22e31e98cf372a692027ff0bb610
  Author: Pedro Lobo <pedro.lobo at tecnico.ulisboa.pt>
  Date:   2024-12-04 (Wed, 04 Dec 2024)

  Changed paths:
    M llvm/lib/Analysis/ConstantFolding.cpp
    M llvm/test/Transforms/InstSimplify/ConstProp/abs.ll

  Log Message:
  -----------
  [InstSimplify] Refine `abs(min/undef, true)` to `poison` (#118669)

Calls to `@llvm.abs(undef, i1 true)` and `@llvm.abs(INT_MIN, i1 true)`
can be optimized to `poison` instead of `undef`.

[Alive2](https://alive2.llvm.org/ce/z/Hg-2ug)



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