added new condition

Author: harin-ramesh

build_system/src/test.rs

@@ -874,13 +874,22 @@ fn contains_ui_error_patterns(file_path: &Path, keep_lto_tests: bool) -> Result<
         if line.contains("//[") && line.contains("]~") {
             return Ok(true);
         }
+
         // Check for pass markers
         if ["//@ check-pass", "//@ build-pass", "//@ run-pass"]
             .iter()
             .any(|marker| line.contains(marker))
         {
             has_pass_marker = true;
         }
+
+        if ["//@ ignore-auxiliary"]
+            .iter()
+            .any(|marker| line.contains(marker))
+        {
+            return Ok(false);
+        }
+
     }
     let file_path = file_path.display().to_string();
     if file_path.contains("ambiguous-4-extern.rs") {
@@ -892,8 +901,6 @@ fn contains_ui_error_patterns(file_path: &Path, keep_lto_tests: bool) -> Result<
         return Ok(true);
     }
 
-    // If there are no error patterns, check for pass markers
-    // Keep tests with pass markers, remove tests without them
     Ok(!has_pass_marker)
 }