[PATCH] propagate IR-level fast-math-flags to DAG nodes, disabled by default

[Sanjay Patel]

On Fri, Jul 17, 2015 at 4:42 PM, Nick Lewycky <nlewycky at google.com> wrote:

> On 9 July 2015 at 15:27, Sanjay Patel <spatel at rotateright.com> wrote:
>
>> Hi Nick,
>>
>> The reciprocal fix is in at r241826. Please let me know when you find
>> another failure. Thanks!
>>
>
> Thank you! I tested it and found exactly nothing wrong. Hopefully I didn't
> goof the testing, but I think it's time to flip the flag to true, then wait
> a few days before removing the flag entirely.
>

Wow...I'm surprised, but I'll hope for the best. Thanks for the testing!


Note however, that we still have problems with PR24141 which is related to
> unsafe fp math, but doesn't change with the -enable-fmf-dag flag.
>

Proposed fix:
http://reviews.llvm.org/D11345
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