[PATCH] D115456: Implement on-demand TLS initialization for Microsoft CXX ABI

[Reid Kleckner via Phabricator via cfe-commits]

rnk added a comment.

I probably don't have time to review this, so let me redirect to @hans.



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Comment at: clang/lib/CodeGen/MicrosoftCXXABI.cpp:2400
 
+static llvm::GlobalValue *getTlsGuardVar(CodeGenModule &CGM) {
+  llvm::Type *VTy = llvm::Type::getInt8Ty(CGM.getLLVMContext());
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My understanding is that every DLL has exactly one `__tls_guard` variable. All TLS variables in a DLL are initialized as soon as a thread accesses one TLS variable for a DLL. Is that accurate? Can you add comments about the way this is intended to work here?


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  https://reviews.llvm.org/D115456/new/

https://reviews.llvm.org/D115456