[all-commits] [llvm/llvm-project] 53d3d1: [SLPVectorizer] Avoid two successive hash lookups ...

[Kazu Hirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 53d3d1ab9abf28e92a27fce0a99ae83720d27d75
      https://github.com/llvm/llvm-project/commit/53d3d1ab9abf28e92a27fce0a99ae83720d27d75
  Author: Kazu Hirata <kazu at google.com>
  Date:   2024-09-03 (Tue, 03 Sep 2024)

  Changed paths:
    M llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp

  Log Message:
  -----------
  [SLPVectorizer] Avoid two successive hash lookups on the same key (#107143)

This patch replaces the find-try_emplace sequence with just one call
to try_emplace, thereby avoiding two successive hash lookups on the
same key.  I am not using the "inserted" boolean from try_emplace to
preserve the original behavior (that is, before PR 107123) that checks
to see if the value is nullptr or not.



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