r222906 - Create a new 'flag_enum' attribute.

[Aaron Ballman]

Seconded; Hans, can you take care of this? It should be relatively
safe as the feature was not in 3.5.

Thanks!

~Aaron

On Tue, Jan 20, 2015 at 12:46 PM, Sean Hunt <scshunt at csclub.uwaterloo.ca> wrote:
> On Thu, Nov 27, 2014 at 7:53 PM, Sean Hunt <scshunt at csclub.uwaterloo.ca> wrote:
>> Author: coppro
>> Date: Thu Nov 27 18:53:20 2014
>> New Revision: 222906
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=222906&view=rev
>> Log:
>> Create a new 'flag_enum' attribute.
>>
>> This attribute serves as a hint to improve warnings about the ranges of
>> enumerators used as flag types. It currently has no working C++ implementation
>> due to different semantics for enums in C++. For more explanation, see the docs
>> and testcases.
>>
>> Reviewed by Aaron Ballman.
>
> After some discussion with dgregor, I've started work on a patch to
> fix a few issues identified with this. Unfortunately, though, I don't
> have the time to do this in time for 3.6. Can this please be reverted
> on the 3.6 branch?
>
> Sean
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