[all-commits] [llvm/llvm-project] b6a8f5: [LV] Consider all exit branch conditions uniform.

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b6a8f5486bc12b132ec984bc8767506e3bcb6694
      https://github.com/llvm/llvm-project/commit/b6a8f5486bc12b132ec984bc8767506e3bcb6694
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2024-04-28 (Sun, 28 Apr 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
    M llvm/test/Transforms/LoopVectorize/AArch64/induction-costs.ll

  Log Message:
  -----------
  [LV] Consider all exit branch conditions uniform.

If we vectorize a loop with multiple exits, all exiting branches should
be considered uniform, as the resulting loop will be controlled by the
canonical IV only. Previously we were overestimating the cost of values
contributing to the other exits.



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