[all-commits] [llvm/llvm-project] 45ff28: [ConstraintSystem] Fix signed overflow in negate.

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 45ff28746f5f6350a95d8d9a3e3b3a62b932bce9
      https://github.com/llvm/llvm-project/commit/45ff28746f5f6350a95d8d9a3e3b3a62b932bce9
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2024-12-03 (Tue, 03 Dec 2024)

  Changed paths:
    M llvm/include/llvm/Analysis/ConstraintSystem.h
    M llvm/test/Transforms/ConstraintElimination/constraint-overflow.ll

  Log Message:
  -----------
  [ConstraintSystem] Fix signed overflow in negate.

Use AddOverflow for potentially overflowing addition to fixed signed
integer overflow.

Compile-time impact is in the noise
https://llvm-compile-time-tracker.com/compare.php?from=bfb26202e05ee2932b4368b5fca607df01e8247f&to=195b0707148b567c674235e59712458e7ce1bb0e&stat=instructions:u



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