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

[Gulfem Savrun Yeniceri via Phabricator via llvm-commits]

gulfem updated this revision to Diff 473387.
gulfem added a comment.

Addressed feedback.


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
@@ -1802,6 +1802,12 @@
     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 only 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 and dropped during linking.
 ``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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