[SSP] Restore setting the visibility of __guard_local to hidden for b…

…etter code generation. Patch by: Philip Guenther (cherry picked from commit d870e36)
llvm · Aug 28, 2020 · 97ac9e8 · 97ac9e8
1 parent 22bce84
commit 97ac9e8
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -1827,7 +1827,10 @@ Value *TargetLoweringBase::getIRStackGuard(IRBuilder<> &IRB) const {
   if (getTargetMachine().getTargetTriple().isOSOpenBSD()) {
     Module &M = *IRB.GetInsertBlock()->getParent()->getParent();
     PointerType *PtrTy = Type::getInt8PtrTy(M.getContext());
-    return M.getOrInsertGlobal("__guard_local", PtrTy);
+    Constant *C = M.getOrInsertGlobal("__guard_local", PtrTy);
+    if (GlobalVariable *G = dyn_cast_or_null<GlobalVariable>(C))
+      G->setVisibility(GlobalValue::HiddenVisibility);
+    return C;
   }
   return nullptr;
 }