Shortcut explicit calls to a trivial copy assignment operator.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89944 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp
index 3b97fcb..a0b02d5 100644
--- a/lib/CodeGen/CGCXX.cpp
+++ b/lib/CodeGen/CGCXX.cpp
@@ -270,6 +270,14 @@
This = BaseLV.getAddress();
}
+ if (MD->isCopyAssignment() && MD->isTrivial()) {
+ // We don't like to generate the trivial copy assignment operator when
+ // it isn't necessary; just produce the proper effect here.
+ llvm::Value *RHS = EmitLValue(*CE->arg_begin()).getAddress();
+ EmitAggregateCopy(This, RHS, CE->getType());
+ return RValue::get(This);
+ }
+
// C++ [class.virtual]p12:
// Explicit qualification with the scope operator (5.1) suppresses the
// virtual call mechanism.