[all-commits] [llvm/llvm-project] ee39c6: [Clang] Support multilibs on Windows (#200212)

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ee39c604feff48ce4b5396f8a7c51da86768479b
      https://github.com/llvm/llvm-project/commit/ee39c604feff48ce4b5396f8a7c51da86768479b
  Author: Joseph Huber <huberjn at outlook.com>
  Date:   2026-06-09 (Tue, 09 Jun 2026)

  Changed paths:
    M clang/docs/Multilib.rst
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Driver/ToolChains/MSVC.cpp
    A clang/test/Driver/Inputs/multilib_msvc_tree/bin/.keep
    A clang/test/Driver/Inputs/multilib_msvc_tree/include/x86_64-pc-windows-msvc/.keep
    A clang/test/Driver/Inputs/multilib_msvc_tree/include/x86_64-pc-windows-msvc/debug/.keep
    A clang/test/Driver/Inputs/multilib_msvc_tree/include/x86_64-pc-windows-msvc/noexcept/.keep
    A clang/test/Driver/Inputs/multilib_msvc_tree/include/x86_64-pc-windows-msvc/release/.keep
    A clang/test/Driver/msvc-multilib.yaml
    M clang/test/Driver/print-multi-selection-flags.c

  Log Message:
  -----------
  [Clang] Support multilibs on Windows (#200212)

Summary:
This was pushed to a follow-up, and I think the previous has lingered
long enough to expand this to Windows. the per-target runtime directory
this uses is default-off, but nothing stops us from just providing this.
The interest in this is for ROCm builds on Windows to be able to provide
asan / debug builds the same way on Linux.



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