objective-C arc: in copy helper function for
__strong __block variables, perform objc_storeStrong on
source and destination instead of direct move. This
is done with -O0 and to improve some analysis.
// rdar://12530881
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171555 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBlocks.cpp b/lib/CodeGen/CGBlocks.cpp
index 54bcb88..e33e664 100644
--- a/lib/CodeGen/CGBlocks.cpp
+++ b/lib/CodeGen/CGBlocks.cpp
@@ -1565,6 +1565,11 @@
llvm::Value *null =
llvm::ConstantPointerNull::get(cast<llvm::PointerType>(value->getType()));
+ if (CGF.CGM.getCodeGenOpts().OptimizationLevel == 0) {
+ CGF.EmitARCStoreStrongCall(destField, value, /*ignored*/ true);
+ CGF.EmitARCStoreStrongCall(srcField, null, /*ignored*/ true);
+ return;
+ }
llvm::StoreInst *store = CGF.Builder.CreateStore(value, destField);
store->setAlignment(Alignment.getQuantity());