[PATCH] Minor Attr.td tablegen additions

[Aaron Ballman]

Thanks!  Committed in r187401

~Aaron

On Mon, Jul 29, 2013 at 7:49 PM, Eli Friedman <eli.friedman at gmail.com> wrote:
> LGTM.
>
> -Eli
>
> On Mon, Jul 29, 2013 at 6:19 AM, Aaron Ballman <aaron at aaronballman.com> wrote:
>> Ping
>>
>> On Mon, Jul 22, 2013 at 3:26 PM, Aaron Ballman <aaron at aaronballman.com> wrote:
>>> Ping
>>>
>>> ~Aaron
>>>
>>> On Wed, Jul 17, 2013 at 8:57 PM, Aaron Ballman <aaron at aaronballman.com> wrote:
>>>> There are type attributes and target-specific attributes which get
>>>> somewhat special semantic handling.  By codifying this as part of the
>>>> tablegen file, we can generate more specific code in the future as
>>>> well as more cleanly express intent in the tablegen.
>>>>
>>>> This patch is laying some groundwork for eventually removing much of
>>>> the redundancy from SemaDeclAttr.cpp.  More patches on that are
>>>> coming.  In and of itself, this patch removes some code from Attr.td
>>>> (namely ASTNode = 0 declarations on various type attributes), and
>>>> fixes a mistake with Ptr32, Ptr64, UPtr and SPtr generating AST nodes
>>>> that are never actually used anywhere.
>>>>
>>>> Note that this patch does not add a TypeAttr base class like it does
>>>> for InheritableAttr (et al) -- there are no type attributes which
>>>> generate AST nodes currently (this is the same reason there is no
>>>> TYPE_ATTR macro).
>>>>
>>>> ~Aaron
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