[llvm] support Windows DLL build of LLVM#11117

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andrurogerz wants to merge 6 commits intoswiftlang:stable/21.xfrom

andrurogerz:swiftlang/stable/21.x

Commits on Aug 5, 2025

[llvm] annotate ABIBreakingChecks symbols for DLL export (#149198)
andrurogerz
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[llvm] annotate interfaces in Demangle for DLL export (#147564)

andrurogerz
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ldionne
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[llvm] get cl::opt instantiations working with MSVC DLL build (#147810)
andrurogerz
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[llvm] ensure DEMANGLE_ABI is properly defined (#151023)
andrurogerz
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[llvm] [Demangle] Fix a typo in the definition of DEMANGLE_ABI for dllimport

mstorsjo
authored and
andrurogerz
committed
[llvm] annotate recently added interfaces for DLL export (#150101)
andrurogerz
committed