Emit the TLS initialization function pointers into the correct section.
The `llvm.tls_init_funcs' (created by the front-end) holds pointers to the TLS
initialization functions. These need to be placed into the correct section so
that they are run before `main()'.
<rdar://problem/13733006>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180737 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 84162ace..4a71ad3 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1254,6 +1254,11 @@
return true;
}
+ if (GV->getName() == "llvm.tls_init_funcs") {
+ EmitTLSInitFuncs(cast<ConstantArray>(GV->getInitializer()));
+ return true;
+ }
+
return false;
}
@@ -1320,6 +1325,16 @@
}
}
+/// EmitTLSInitFuncs - Emit the TLS initialization functions.
+void AsmPrinter::EmitTLSInitFuncs(const ConstantArray *InitList) {
+ const DataLayout *TD = TM.getDataLayout();
+ OutStreamer.SwitchSection(getObjFileLowering().getTLSThreadInitSection());
+ EmitAlignment(Log2_32(TD->getPointerPrefAlignment()));
+ for (unsigned I = 0, E = InitList->getNumOperands(); I != E; ++I)
+ EmitGlobalConstant(
+ dyn_cast<Constant>(InitList->getOperand(I)->stripPointerCasts()));
+}
+
//===--------------------------------------------------------------------===//
// Emission and print routines
//