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Document the LLVM "thunk" attribute added back in r226708

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231181 91177308-0d34-0410-b5e6-96231b3b80d8
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Reid Kleckner 2015-03-04 00:08:56 +00:00
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docs/LangRef.rst
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@ -1369,6 +1369,11 @@ example:
If a function that has an ``sspstrong`` attribute is inlined into a
function that doesn't have an ``sspstrong`` attribute, then the
resulting function will have an ``sspstrong`` attribute.
``"thunk"``
This attribute indicates that the function will delegate to some other
function with a tail call. The prototype of a thunk should not be used for
optimization purposes. The caller is expected to cast the thunk prototype to
match the thunk target prototype.
``uwtable``
This attribute indicates that the ABI being targeted requires that
an unwind table entry be produce for this function even if we can