r199679 - Adding a bit of documentation that was missed with r198883 (when ParseArgumentsAsUnevaluated was added).
Aaron Ballman
aaron at aaronballman.com
Mon Jan 20 10:42:10 PST 2014
Author: aaronballman
Date: Mon Jan 20 12:42:10 2014
New Revision: 199679
URL: http://llvm.org/viewvc/llvm-project?rev=199679&view=rev
Log:
Adding a bit of documentation that was missed with r198883 (when ParseArgumentsAsUnevaluated was added).
Modified:
cfe/trunk/docs/InternalsManual.rst
Modified: cfe/trunk/docs/InternalsManual.rst
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/InternalsManual.rst?rev=199679&r1=199678&r2=199679&view=diff
==============================================================================
--- cfe/trunk/docs/InternalsManual.rst (original)
+++ cfe/trunk/docs/InternalsManual.rst Mon Jan 20 12:42:10 2014
@@ -1718,6 +1718,11 @@ duplicated. However, if an attribute can
stage, set ``DuplicatesAllowedWhileMerging`` to ``1``, and the attribute will
be merged.
+By default, attribute arguments are parsed in an evaluated context. If the
+arguments for an attribute should be parsed in an unevaluated context (akin to
+the way the argument to a ``sizeof`` expression is parsed), you can set
+``ParseArgumentsAsUnevaluated`` to ``1``.
+
If additional functionality is desired for the semantic form of the attribute,
the ``AdditionalMembers`` field specifies code to be copied verbatim into the
semantic attribute class object.
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