[all-commits] [llvm/llvm-project] 63d2e6: [clang][Lex] Unique ModuleMacros with a UniquingSe...

[Kazu Hirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 63d2e62707e8ec6c070a3b258ea81f320920525c
      https://github.com/llvm/llvm-project/commit/63d2e62707e8ec6c070a3b258ea81f320920525c
  Author: Kazu Hirata <kazu at google.com>
  Date:   2026-09-13 (Sun, 13 Sep 2026)

  Changed paths:
    M clang/include/clang/Lex/MacroInfo.h
    M clang/include/clang/Lex/Preprocessor.h
    M clang/lib/Lex/PPMacroExpansion.cpp

  Log Message:
  -----------
  [clang][Lex] Unique ModuleMacros with a UniquingSet (NFC) (#223270)

This patch migrates ModuleMacros in Preprocessor from llvm::FoldingSet
to llvm::UniquingSet.

ModuleMacro keys on a pair of Module * and const IdentifierInfo *.
Switching to UniquingSet allows us to look up macros with a typed key,
eliminating FoldingSetNodeID serialization at lookup sites and removing
ModuleMacro::Profile.

Assisted-by: Antigravity



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