[PATCH] D72399: [Support] Replace Windows __declspec(thread) with thread_local in LLVM_THREAD_LOCAL

[Reid Kleckner via Phabricator via llvm-commits]

rnk accepted this revision.
rnk added a comment.

lgtm

I checked that `__declspec(thread)` and `thread_local` seem to be functionally equivalent with MSVC.

Honestly, if `__thread` is available, I wonder if LLVM should prefer that, since it implements the check that the variable is trivially constructible/destructible. But, that has no bearing on which declspec to use.


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