[PATCH][VECTORIZER] Refactor ReductionDescriptor to also support floating-point recurrences

[Arnold Schwaighofer]

LGTM.

> On Jun 13, 2015, at 6:58 PM, Tyler Nowicki <tnowicki at apple.com> wrote:
> 
> Hi,
> 
> Could get a review of these patches?
> 
> Thanks,
> 
> Tyler
> 
>> On Jun 7, 2015, at 12:54 PM, Tyler Nowicki <tnowicki at apple.com> wrote:
>> 
>> Hi,
>> 
>> I would appreciate a review of this refactoring.
>> 
>> Thanks,
>> 
>> Tyler
>> 
>>> On Jun 3, 2015, at 1:56 PM, Tyler Nowicki <tnowicki at apple.com> wrote:
>>> 
>>> Hi Hal,
>>> 
>>> Thanks for the review.
>>> 
>>> I’ve made the changes you asked for. Here are the patches. Soon I’ll start another thread for a patch builds on these to identify basic recurrences that are not reductions.
>>> 
>>> Thanks,
>>> 
>>> Tyler
>>> 
>>> <0001-Renamed-reduction-structures-to-recurrence-structure.patch>
>>> <0002-Moved-RecurrenceInstDesc-into-RecurrenceDescriptor.patch>