[PATCH] D106521: [Docs] Mention how to run lit tests in parallel

[Shivam Gupta via Phabricator via llvm-commits]

xgupta created this revision.
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make check-llvm -jN doesn't seems to control workers. So incase someone want to use their cpu
threads, these commands can help them. Thanks Raphael (teemperor) for suggesting this.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106521

Files:
  llvm/docs/TestingGuide.rst


Index: llvm/docs/TestingGuide.rst
===================================================================
--- llvm/docs/TestingGuide.rst
+++ llvm/docs/TestingGuide.rst
@@ -173,6 +173,17 @@
 
     % llvm-lit ~/llvm/test/CodeGen/ARM
 
+If you want to run lit tests with multiple(N) threads, use:
+
+.. code-block:: bash
+
+    % export LIT_OPTS="-jN"
+
+And then just run check-llvm or any other check- command.
+
+or if you want to make it parmanent for that specific build, pass
+-DLLVM_LIT_ARGS="-sv jN" to CMake.
+
 For more information on using the :program:`lit` tool, see ``llvm-lit --help``
 or the :doc:`lit man page <CommandGuide/lit>`.
 


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