[trunk<-vta] Re: [vtab] Permit coalescing of user variables

[Andrew MacLeod]

Alexandre Oliva wrote:
> On Jun  2, 2009, Richard Guenther <richard.guenther@gmail.com> wrote:
>
>   
>> On Mon, Jun 1, 2009 at 9:23 PM, Alexandre Oliva <aoliva@redhat.com> wrote:
>>     
>>> On Jun  1, 2009, Andrew MacLeod <amacleod@redhat.com> wrote:
>>>
>>>       
>>>> Is there a reason we can't leave the current default behaviour the way
>>>> it is, and have the VTA code simple enable the "best" choices for it.
>>>>         
>>> We don't want options used to control generation of debug information
>>> (say the option that enables or disables VTA) to change the generated
>>> code (say enable or disable coalescing), do we?  This would be as bad as
>>> -g/-g0 generating different code.
>>>
>>> Personally, I don't see the point of the options either, but I don't see
>>>       
>
>   
>> Me neither, and I am opposed to adding it.
>>     
>
> I'm missing your rationale here as well.  It would help if you at least
> voiced what you suggest we do instead.
>
>   
I think we are simply proposing that when VTA code is added and enabled, 
the default behaviour is then changed such that we do this coalescing.  
Until then it stays with the current tradeoffs. no options required...

At least that's all I meant.

Andrew