Re: [nvptx, committed] Disable -gstatement-frontiers for nvptx

[Tom de Vries <Tom_deVries@mentor.com>]

On 12/31/2017 09:04 PM, Alexandre Oliva wrote:
> On Dec 29, 2017, Tom de Vries <Tom_deVries@mentor.com> wrote:
> 
>> On 12/29/2017 05:12 AM, Alexandre Oliva wrote:
>>> On Dec 27, 2017, Tom de Vries <Tom_deVries@mentor.com> wrote:
>>>
>>>> .loc file_index line_number column_position
>>>
>>>> so this causes ptxas errors when compiling something for nvptx with
>>>> -g, which breaks the nvptx build.
>>>
>>> What do the errors look like?
> 
>>      16  .loc 1 15 1 is_stmt 0
> 
> Oh, is_stmt is not a new assembler feature, nor is it one that's
> introduced by SFN, but SFN does indeed get GCC to exercise it in cases
> it didn't before, and that completely escaped me when I was surprised by
> your previous email.  Thanks for the data, it clears it all up for me.
> 
>> If you point me to the location of a configure test that is supposed
>> to file, I can try to find out why it passes.
> 
> Thanks, even the configure test for '.loc ... view' support is in the
> LVU patch yet to be reviewed and installed.
> 
> Now, perhaps it would be wise to introduce a test for is_stmt support in
> .loc directives, now that we know there are assemblers that don't
> support it.
> 

Filed: PR83788 - Add .loc is_stmt support test ( 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83788 ).

Thanks,
- Tom