Re: reviewers for wide int.

2014-04-23 Thread Kenneth Zadeck

On 04/23/2014 04:04 AM, Richard Biener wrote:

On Tue, 22 Apr 2014, Mike Stump wrote:


On Apr 22, 2014, at 12:48 PM, Kenneth Zadeck  wrote:

While of course one hopes that there will be no issues with wide-int, a
change of this size will have some pain no matter how well we have
tested it.  Having three reviewers will assure problems are resolved
quickly.

Works for me.  I suppose this mainly covers wide-int.[CH], right?

if you want to define it that narrowly you can.   it really depends on how much 
help you want and how much you trust us not to go beyond what is reasonable.   
All three of us have been at this long enough to know when to ask for help.

There is a large class of bugs that can creep in due to the subtle
change of interface from double-int to wide-int.  These happen outside
of the wide-int.[ch] code and seem statistically more likely by a large
margin than bugs in wide-int.[ch].  The good news, resolving them is
easy enough with side-by-side comparisons (say of dump files and .s
files).  Most of those fixes I’d expect to be trivial (for some
definition of trivial).

Yeah.  Note that it's difficult to define "reviewer for code that
uses wide-int", thus my question (that is, what do you put into
MAINTAINERS and how would you interpret the entry).

But as always we apply common sense to reviewer/maintainership
areas.

richi.

This is not without precedent.   The dataflow reviewers are authorized 
to review changes to data flow anywhere in the rtl level and back ends. 
   In the many years that that has been in place none of us "went 
rogue".We will be conservative.


kenny


Richard.





Re: reviewers for wide int.

2014-04-23 Thread Richard Biener
On Tue, 22 Apr 2014, Mike Stump wrote:

> On Apr 22, 2014, at 12:48 PM, Kenneth Zadeck  wrote:
> > 
> >>> While of course one hopes that there will be no issues with wide-int, a
> >>> change of this size will have some pain no matter how well we have
> >>> tested it.  Having three reviewers will assure problems are resolved
> >>> quickly.
> >> Works for me.  I suppose this mainly covers wide-int.[CH], right?
> > if you want to define it that narrowly you can.   it really depends on how 
> > much help you want and how much you trust us not to go beyond what is 
> > reasonable.   All three of us have been at this long enough to know when to 
> > ask for help.
> 
> There is a large class of bugs that can creep in due to the subtle 
> change of interface from double-int to wide-int.  These happen outside 
> of the wide-int.[ch] code and seem statistically more likely by a large 
> margin than bugs in wide-int.[ch].  The good news, resolving them is 
> easy enough with side-by-side comparisons (say of dump files and .s 
> files).  Most of those fixes I’d expect to be trivial (for some 
> definition of trivial).

Yeah.  Note that it's difficult to define "reviewer for code that
uses wide-int", thus my question (that is, what do you put into
MAINTAINERS and how would you interpret the entry).

But as always we apply common sense to reviewer/maintainership
areas.

Richard.

-- 
Richard Biener 
SUSE / SUSE Labs
SUSE LINUX Products GmbH - Nuernberg - AG Nuernberg - HRB 16746
GF: Jeff Hawn, Jennifer Guild, Felix Imend"orffer

Re: reviewers for wide int.

2014-04-22 Thread Mike Stump
On Apr 22, 2014, at 12:48 PM, Kenneth Zadeck  wrote:
> 
>>> While of course one hopes that there will be no issues with wide-int, a
>>> change of this size will have some pain no matter how well we have
>>> tested it.  Having three reviewers will assure problems are resolved
>>> quickly.
>> Works for me.  I suppose this mainly covers wide-int.[CH], right?
> if you want to define it that narrowly you can.   it really depends on how 
> much help you want and how much you trust us not to go beyond what is 
> reasonable.   All three of us have been at this long enough to know when to 
> ask for help.

There is a large class of bugs that can creep in due to the subtle change of 
interface from double-int to wide-int.  These happen outside of the 
wide-int.[ch] code and seem statistically more likely by a large margin than 
bugs in wide-int.[ch].  The good news, resolving them is easy enough with 
side-by-side comparisons (say of dump files and .s files).  Most of those fixes 
I’d expect to be trivial (for some definition of trivial).

Re: reviewers for wide int.

2014-04-22 Thread Kenneth Zadeck

On 04/22/2014 03:37 PM, Richard Biener wrote:

On April 22, 2014 9:28:15 PM CEST, Kenneth Zadeck  
wrote:

Richi,

David Edelsohn said that I should talk to you about appointing
reviewers
for wide-int.While I think that it may not be necessary to have any

reviewers for wide-int in the long term, I think that it would be
useful
to make Richard Sandiford, Mike Stump and myself reviewers at least for

this release cycle.

While of course one hopes that there will be no issues with wide-int, a

change of this size will have some pain no matter how well we have
tested it.  Having three reviewers will assure problems are resolved
quickly.

Works for me.  I suppose this mainly covers wide-int.[CH], right?
if you want to define it that narrowly you can.   it really depends on 
how much help you want and how much you trust us not to go beyond what 
is reasonable.   All three of us have been at this long enough to know 
when to ask for help.


Kenny

Richard.


Thanks,

Kenny






Re: reviewers for wide int.

2014-04-22 Thread Richard Biener
On April 22, 2014 9:28:15 PM CEST, Kenneth Zadeck  
wrote:
>Richi,
>
>David Edelsohn said that I should talk to you about appointing
>reviewers 
>for wide-int.While I think that it may not be necessary to have any
>
>reviewers for wide-int in the long term, I think that it would be
>useful 
>to make Richard Sandiford, Mike Stump and myself reviewers at least for
>
>this release cycle.
>
>While of course one hopes that there will be no issues with wide-int, a
>
>change of this size will have some pain no matter how well we have 
>tested it.  Having three reviewers will assure problems are resolved 
>quickly.

Works for me.  I suppose this mainly covers wide-int.[CH], right?

Richard.

>Thanks,
>
>Kenny