[PATCH] Make GVN more iterative

[Daniel Berlin]

Sure. The file is a couple hundred megabytes. Let me see if i can
distill it a bit ;)

On Tue, Aug 12, 2014 at 7:29 AM, Duncan P. N. Exon Smith
<dexonsmith at apple.com> wrote:
>
>> On 2014 Aug 11, at 15:25, Daniel Berlin <dberlin at dberlin.org> wrote:
>>
>> We have cases where GVN is *really slow* (IE 29 seconds and 80% of
>> compile time). Iterating it again is likely to make that worse.  Happy
>> to give them to you (or test it with this patch)
>
> A little off-topic, but I was looking for GVN testcases like this a
> few months ago -- I'd appreciate if you could send them to me!