Generate objc_read_weak for __weak objc loads.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59553 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 9935625..d537c9c 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -151,6 +151,14 @@
/// this method emits the address of the lvalue, then loads the result as an
/// rvalue, returning the rvalue.
RValue CodeGenFunction::EmitLoadOfLValue(LValue LV, QualType ExprType) {
+ if (LV.isObjcWeak()) {
+ // load of a __weak object.
+ llvm::Value *AddrWeakObj = LV.getAddress();
+ llvm::Value *read_weak = CGM.getObjCRuntime().EmitObjCWeakCall(*this,
+ AddrWeakObj);
+ return RValue::get(read_weak);
+ }
+
if (LV.isSimple()) {
llvm::Value *Ptr = LV.getAddress();
const llvm::Type *EltTy =