[MS ABI] Add /include directives for dynamic TLS
MSVC emits /include directives in the .drective section for the
__dyn_tls_init function (decorated as ___dyn_tls_init@12 for 32-bit).
This fixes PR30347.
llvm-svn: 281189
diff --git a/clang/lib/CodeGen/MicrosoftCXXABI.cpp b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
index 58fe5d3..7220768 100644
--- a/clang/lib/CodeGen/MicrosoftCXXABI.cpp
+++ b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
@@ -2211,6 +2211,14 @@
CodeGenModule &CGM, ArrayRef<const VarDecl *> CXXThreadLocals,
ArrayRef<llvm::Function *> CXXThreadLocalInits,
ArrayRef<const VarDecl *> CXXThreadLocalInitVars) {
+ if (CXXThreadLocalInits.empty())
+ return;
+
+ CGM.AppendLinkerOptions(CGM.getTarget().getTriple().getArch() ==
+ llvm::Triple::x86
+ ? "/include:___dyn_tls_init@12"
+ : "/include:__dyn_tls_init");
+
// This will create a GV in the .CRT$XDU section. It will point to our
// initialization function. The CRT will call all of these function
// pointers at start-up time and, eventually, at thread-creation time.