[analyzer] Add support for __builtin_constant_p to BuiltinFunctionChecker

[George Karpenkov via cfe-commits]

Hi Felix,

If you would like to get the patch reviewed and committed the best way is to create a review in phabricator
(http://reviews.llvm.org) and add Devin Coughlin, me, and Artem Dergachev as reviewers.

> On Jan 16, 2018, at 7:30 PM, Vedant Kumar <vsk at apple.com> wrote:
> 
> + Devin and George
> 
>> On Jan 14, 2018, at 10:44 AM, Felix Kostenzer via cfe-commits <cfe-commits at lists.llvm.org> wrote:
>> 
>> 
>> Hi,
>> 
>> Added evaluation of __builtin_constant_p to the dedicated StaticAnalyzer checker
>> along with a regression test.
>> 
>> 'make clang-test' results:
>> 
>> Testing Time: 335.63s
>> Expected Passes : 11769
>> Expected Failures : 19
>> Unsupported Tests : 50
>> 
>> - felix<0001-analyzer-add-builtin_constant_p-support.patch>_______________________________________________
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>