Backport a7bc9cb to release/18.x

[shafik]

I would like to request #80730 be backported to the release/18.x branch.

/cherry-pick a7bc9cb

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: Shafik Yaghmour (shafik)

I would like to request https://github.com//issues/80435 be backported to the release/18.x branch.

/cherry-pick a7bc9cb

[llvmbot]

I would like to request #80435 be backported to the release/18.x branch.

/cherry-pick a7bc9cb

Error: Command failed due to missing milestone.

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: Shafik Yaghmour (shafik)

I would like to request https://github.com//issues/80435 be backported to the release/18.x branch.

/cherry-pick a7bc9cb

Error: Command failed due to missing milestone.

[nikic]

/cherry-pick a7bc9cb

[llvmbot]

/pull-request #80903