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-rw-r--r--src/tools/miropt-test-tools/src/lib.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/tools/miropt-test-tools/src/lib.rs b/src/tools/miropt-test-tools/src/lib.rs
index 4317f23a822..41b53d2ad0e 100644
--- a/src/tools/miropt-test-tools/src/lib.rs
+++ b/src/tools/miropt-test-tools/src/lib.rs
@@ -129,6 +129,9 @@ pub fn files_for_miropt_test(
 
             out.push(MiroptTestFile { expected_file, from_file, to_file });
         }
+        if !run_filecheck && l.trim_start().starts_with("// CHECK") {
+            panic!("error: test contains filecheck directive but is marked `skip-filecheck`");
+        }
     }
 
     MiroptTest { run_filecheck, suffix, files: out, passes }