3.6.1 nomination: 'optnone' should not disable DAG combiner

[Robinson, Paul]

r233871, thanks!
--paulr

> -----Original Message-----
> From: Owen Anderson [mailto:resistor at mac.com]
> Sent: Wednesday, April 01, 2015 9:33 AM
> To: Tom Stellard
> Cc: Robinson, Paul; llvm-commits at cs.uiuc.edu
> Subject: Re: 3.6.1 nomination: 'optnone' should not disable DAG combiner
> 
> Approved.
> 
> —Owen
> 
> > On Mar 31, 2015, at 5:33 PM, Tom Stellard <tom at stellard.net> wrote:
> >
> > Owen, what do you think?
> >
> > On Wed, Apr 01, 2015 at 12:22:41AM +0000, Robinson, Paul wrote:
> >> I'm requesting r233153 and r233584 get merged to the 3.6 branch.
> >> 233153 causes 'optnone' _not_ to disable the entire DAG combiner,
> >> because disabling the combiner can lead to instruction-selection
> >> crashes. 233584 is the test for that patch.
> >> Thanks,
> >> --paulr
> >>