Improving GCC's line table information to help GDB

[Luis Machado]

Hi Maciej,

On 10/16/19 11:11 AM, Maciej W. Rozycki wrote:
> Hi Luis,
> 
>> Is there a better way to force the compiler to output such a line table
>> transition without having to resort to a dummy jump? Is there a safer
>> way to add such transitions without worrying about the optimizer getting
>> rid of them later on? Should we even worry about preserving such
>> information for higher optimization levels?
> 
>   Isn't it exactly what statement frontier notes have been invented for
> (and implemented) by Alexandre (cc-ed)?  Or am I confused and/or missing
> something here?
> 
>    Maciej
> 

I'm fresh to this topic. I recall he was working on improving debug 
information for optimized binaries, which isn't the case for this 
example. But it sounds promising nonetheless.

I'll do some reading.

Thanks,
Luis