[all-commits] [llvm/llvm-project] a8057f: [DA] getBackedgeTakenCount in isKnownLessThan can ...

[Sjoerd Meijer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a8057ff12956b7dd6dec44f9610c446c828c4af8
      https://github.com/llvm/llvm-project/commit/a8057ff12956b7dd6dec44f9610c446c828c4af8
  Author: Sjoerd Meijer <smeijer at nvidia.com>
  Date:   2025-10-14 (Tue, 14 Oct 2025)

  Changed paths:
    M llvm/lib/Analysis/DependenceAnalysis.cpp
    A llvm/test/Analysis/DependenceAnalysis/becount-couldnotcompute.ll

  Log Message:
  -----------
  [DA] getBackedgeTakenCount in isKnownLessThan can return CouldNotCompute (#162495)

Bail out when the backedge taken count is a CouldNotCompute SCEV in
function isKnownLessThan; we cannot and do not want to query things like
its Type.

Fixes #159979



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