[clang-tools-extra] [clang-tidy] Create a check for signed and unsigned integers comparison (PR #113144)

[via cfe-commits]

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@@ -0,0 +1,68 @@
+.. title:: clang-tidy - qt-integer-sign-comparison
+
+qt-integer-sign-comparison
+=============================
+
+The qt-integer-sign-comparison check is an alias, please see
+:doc:`modernize-use-integer-sign-comparison <../modernize/use-integer-sign-comparison>`
+for more information.
+
+Examples of fixes created by the check:
+
+.. code-block:: c++
+
+    uint func(int bla)
+    {
+        uint result;
+        if (result == bla)
+            return 0;
+
+        return 1;
+    }
+
+in C++17 becomes
+
+.. code-block:: c++
+
+    <QtCore/q20utility.h>
+
+    uint func(int bla)
+    {
+        uint result;
+        if (q20::cmp_equal(result, bla))
+            return 0;
+
+        return 1;
+    }
+
+in C++20 becomes
+
+.. code-block:: c++
+
+    #include <utility>
+
+    uint func(int bla)
+    {
+        uint result;
+        if (std::cmp_equal(result, bla))
+            return 0;
+
+        return 1;
+    }
+
+Options
+-------
+
+.. option:: IncludeStyle
+
+   A string specifying which include-style is used, `llvm` or `google`. Default
+   is `llvm`.
+
+.. option:: IsQtApplication
+
+  When `true` (default `false`), then it is assumed that the code being analyzed
+  is the Qt-based code.
+
+.. option:: StringsMatchHeader
+  A string specifying a include header file to be added by fix-it. Default
----------------
qt-tatiana wrote:

I updated my solution a little bit and deleted this property, but forgot to delete from doc. thanks!

https://github.com/llvm/llvm-project/pull/113144