[PATCH] D131628: [LangRef] Add description for nocallback attribute

[Gulfem Savrun Yeniceri via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG70792cd4f837: [LangRef] Add description for nocallback attribute (authored by gulfem).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D131628/new/

https://reviews.llvm.org/D131628

Files:
  llvm/docs/LangRef.rst


Index: llvm/docs/LangRef.rst
===================================================================
--- llvm/docs/LangRef.rst
+++ llvm/docs/LangRef.rst
@@ -1805,6 +1805,13 @@
     with equivalent code based on the semantics of the built-in function, unless
     the call site uses the ``builtin`` attribute. This is valid at call sites
     and on function declarations and definitions.
+``nocallback``
+    This attribute indicates that the function is only allowed to jump back into
+    caller's module by a return or an exception, and is not allowed to jump back
+    by invoking a callback function, a direct, possibly transitive, external
+    function call, use of ``longjmp``, or other means. It is a compiler hint that
+    is used at module level to improve dataflow analysis, dropped during linking,
+    and has no effect on functions defined in the current module.
 ``noduplicate``
     This attribute indicates that calls to the function cannot be
     duplicated. A call to a ``noduplicate`` function may be moved


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