[CodeGen][ObjC] Emit @objc_retain at -O0 for variables captured by

blocks.

r302270 made changes to avoid emitting clang.arc.use at -O0 and instead
emit @objc_release. We also have to emit @objc_retain for the captured
variable at -O0 to match the @objc_release instead of just storing the
pointer to the capture field.

llvm-svn: 302495

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/lib/CodeGen/CGBlocks.cpp b/clang/lib/CodeGen/CGBlocks.cpp
index 2b2a92dd601..2f7f43be924 100644
--- a/clang/lib/CodeGen/CGBlocks.cpp
+++ b/clang/lib/CodeGen/CGBlocks.cpp
@@ -878,7 +878,8 @@ llvm::Value *CodeGenFunction::EmitBlockLiteral(const CGBlockInfo &blockInfo) {
 
     // If type is const-qualified, copy the value into the block field.
     } else if (type.isConstQualified() &&
-               type.getObjCLifetime() == Qualifiers::OCL_Strong) {
+               type.getObjCLifetime() == Qualifiers::OCL_Strong &&
+               CGM.getCodeGenOpts().OptimizationLevel != 0) {
       llvm::Value *value = Builder.CreateLoad(src, "captured");
       Builder.CreateStore(value, blockField);