[all-commits] [llvm/llvm-project] 1b42be: [Utils] Avoid repeated hash lookups (NFC) (#131267)

[Kazu Hirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1b42be6fe8b850703e0f8e807234e3cb3332ebe0
      https://github.com/llvm/llvm-project/commit/1b42be6fe8b850703e0f8e807234e3cb3332ebe0
  Author: Kazu Hirata <kazu at google.com>
  Date:   2025-03-14 (Fri, 14 Mar 2025)

  Changed paths:
    M llvm/lib/Transforms/Utils/SimplifyCFG.cpp

  Log Message:
  -----------
  [Utils] Avoid repeated hash lookups (NFC) (#131267)

It's safe to use try_emplace instead of operator[] here because:

- PhiPredIVs is empty at the beginning of the loop, and

- The elements we are inserting into PhiPredIVs are unique.



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