Backing out r174919 while I investigate a self-host bug on Takumi's builder.

llvm-svn: 174925

clang/lib/CodeGen/CodeGenFunction.cpp

@@ -559,11 +559,6 @@ void CodeGenFunction::GenerateCode(GlobalDecl GD, llvm::Function *Fn,
     // The lambda "__invoke" function is special, because it forwards or
     // clones the body of the function call operator (but is actually static).
     EmitLambdaStaticInvokeFunction(cast<CXXMethodDecl>(FD));
-  } else if (FD->isDefaulted() && isa<CXXMethodDecl>(FD) &&
-             cast<CXXMethodDecl>(FD)->isCopyAssignmentOperator()) {
-    // Implicit copy-assignment gets the same special treatment as implicit
-    // copy-constructors.
-    emitImplicitAssignmentOperatorBody(Args);
   }
   else
     EmitFunctionBody(Args);