[all-commits] [llvm/llvm-project] 69dbf4: [Sema] Avoid repeated hash lookups (NFC) (#109375)

[Kazu Hirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 69dbf468bf0beb87e2a8d9f9f597296d642028d6
      https://github.com/llvm/llvm-project/commit/69dbf468bf0beb87e2a8d9f9f597296d642028d6
  Author: Kazu Hirata <kazu at google.com>
  Date:   2024-09-20 (Fri, 20 Sep 2024)

  Changed paths:
    M clang/include/clang/Sema/SemaObjC.h
    M clang/lib/Sema/SemaDeclObjC.cpp

  Log Message:
  -----------
  [Sema] Avoid repeated hash lookups (NFC) (#109375)

GlobalMethodPool, the type of MethodPool, is a type wrapping DenseMap
and exposes only a subset of the DenseMap methods.

This patch adds operator[] to GlobalMethodPool so that we can avoid
repeated hash lookups.  I don't bother using references or rvalue
references in operator[] because Selector, the key type, is small and
trivially copyable.  Note that Selector is a class that wraps a
PointerUnion.



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