[all-commits] [llvm/llvm-project] c41926: [Serialization] Avoid iterating Dense{Map, Set} to ...

[Chuanqi Xu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c41926013fd8b23c3d1eca51804a2de36c88433a
      https://github.com/llvm/llvm-project/commit/c41926013fd8b23c3d1eca51804a2de36c88433a
  Author: Chuanqi Xu <yedeng.yd at linux.alibaba.com>
  Date:   2025-03-26 (Wed, 26 Mar 2025)

  Changed paths:
    M clang/include/clang/Serialization/ASTWriter.h
    M clang/lib/Serialization/ASTWriter.cpp

  Log Message:
  -----------
  [Serialization] Avoid iterating Dense{Map,Set} to break determinism
in ASTWriter

It is bad to iterate Dense{Map,Set} in ASTWriter. Since the order in
Dense{Map, Set} is not stable. It may cause the produced BMI differ
even if we run the compiler twice without modifying any other thing.



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