Merge pull request llvm#11558 from rjmansfield/add-arg-to-irgen

[lldb] Add argument for parallelIROutputFilenames arg in performIRGeneration call

Author: DougGregor

lldb/source/Plugins/ExpressionParser/Swift/SwiftExpressionParser.cpp

@@ -2087,7 +2087,7 @@ SwiftExpressionParser::Parse(DiagnosticManager &diagnostic_manager,
         &parsed_expr->module, IRGenOpts, m_swift_ast_ctx.GetTBDGenOptions(),
         std::move(sil_module), "lldb_module",
         swift::PrimarySpecificPaths("", parsed_expr->main_filename),
-        llvm::ArrayRef<std::string>());
+        llvm::ArrayRef<std::string>(), llvm::ArrayRef<std::string>());
 
     if (GenModule) {
       swift::performLLVMOptimizations(