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-rw-r--r--llvm/docs/CommandGuide/FileCheck.rst10
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/docs/CommandGuide/FileCheck.rst b/llvm/docs/CommandGuide/FileCheck.rst
index ac7e81024d1..dfa2fd29515 100644
--- a/llvm/docs/CommandGuide/FileCheck.rst
+++ b/llvm/docs/CommandGuide/FileCheck.rst
@@ -95,6 +95,16 @@ OPTIONS
Show the version number of this program.
+.. option:: -v
+
+ Print directive pattern matches.
+
+.. option:: -vv
+
+ Print information helpful in diagnosing internal FileCheck issues, such as
+ discarded overlapping ``CHECK-DAG:`` matches, implicit EOF pattern matches,
+ and ``CHECK-NOT:`` patterns that do not have matches. Implies ``-v``.
+
.. option:: --allow-deprecated-dag-overlap
Enable overlapping among matches in a group of consecutive ``CHECK-DAG:``
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