[all-commits] [llvm/llvm-project] 18d655: [SimplifyCFG][NFC] Improve compile time for TryToS...

[Amara Emerson via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 18d655fdcce4d17080e6cb2721f93f6db856277e
      https://github.com/llvm/llvm-project/commit/18d655fdcce4d17080e6cb2721f93f6db856277e
  Author: Amara Emerson <amara at apple.com>
  Date:   2024-10-09 (Wed, 09 Oct 2024)

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

  Log Message:
  -----------
  [SimplifyCFG][NFC] Improve compile time for TryToSimplifyUncondBranchFromEmptyBlock optimization. (#110715)

In some pathological cases this optimization can spend an unreasonable
amount of time populating the set for predecessors of the successor
block. This change sinks some of that initializing to the point where
it's actually necessary so we can take advantage of the existing
early-exits.

rdar://137063034



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