[PATCH] D90621: [FileCheck] Added documentation for --allow-unused-prefixes

[Mircea Trofin via Phabricator via llvm-commits]

mtrofin created this revision.
mtrofin added a reviewer: jhenderson.
Herald added subscribers: llvm-commits, thopre.
Herald added a project: LLVM.
mtrofin requested review of this revision.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D90621

Files:
  llvm/docs/CommandGuide/FileCheck.rst


Index: llvm/docs/CommandGuide/FileCheck.rst
===================================================================
--- llvm/docs/CommandGuide/FileCheck.rst
+++ llvm/docs/CommandGuide/FileCheck.rst
@@ -64,6 +64,16 @@
  comment style. In that case, consider proposing a change to the default
  comment prefixes instead.
 
+.. option:: --allow-unused-prefixes
+
+ This option controls behavior when using more than one :option:`--check-prefix`
+ or the alias :option:`--check-prefixes` with multiple values, and some of these
+ prefixes are missing in the test file. If true, this is allowed, if false,
+ FileCheck will report error, listing the missing prefixes.
+
+ It is currently, temporarily, true by default, and will be subsequently
+ switched to false.
+
 .. option:: --input-file filename
 
   File to check (defaults to stdin).


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