[llvm] Add special case for unsupported test (PR #78858)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-testing-tools

Author: AdityaK (hiraditya)

<details>
<summary>Changes</summary>

That helps disable the test for all the targets

---
Full diff: https://github.com/llvm/llvm-project/pull/78858.diff


1 Files Affected:

- (modified) llvm/docs/TestingGuide.rst (+2-1) 


``````````diff
diff --git a/llvm/docs/TestingGuide.rst b/llvm/docs/TestingGuide.rst
index a692e301fa2c41..802cb8d2e6db04 100644
--- a/llvm/docs/TestingGuide.rst
+++ b/llvm/docs/TestingGuide.rst
@@ -568,7 +568,8 @@ list of boolean expressions. The values in each expression may be:
 | ``UNSUPPORTED`` disables the test if any expression is true.
 | ``XFAIL`` expects the test to fail if any expression is true.
 
-As a special case, ``XFAIL: *`` is expected to fail everywhere.
+As a special case, ``XFAIL: *`` is expected to fail everywhere. Similarly,
+``UNSUPPORTED: target={{.*}}`` will disable the test everywhere.
 
 .. code-block:: llvm
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/78858