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-rw-r--r--llvm/docs/TestingGuide.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/docs/TestingGuide.rst b/llvm/docs/TestingGuide.rst
index adf5f3d4cfb..134ddd88c87 100644
--- a/llvm/docs/TestingGuide.rst
+++ b/llvm/docs/TestingGuide.rst
@@ -240,6 +240,10 @@ The recommended way to examine output to figure out if the test passes is using
the :doc:`FileCheck tool <CommandGuide/FileCheck>`. *[The usage of grep in RUN
lines is deprecated - please do not send or commit patches that use it.]*
+Put related tests into a single file rather than having a separate file per
+test. Check if there are files already covering your feature and consider
+adding your code there instead of creating a new file.
+
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