Re: [RFC][debug] Add -fadd-debug-nops

[Tom de Vries <tdevries@suse.de>]

On 07/16/2018 05:10 PM, Tom de Vries wrote:
> On 07/16/2018 03:50 PM, Richard Biener wrote:
>> On Mon, 16 Jul 2018, Tom de Vries wrote:
>>> Any comments?
>>
>> Interesting idea.  I wonder if that should be generalized
>> to other places
> 
> I kept the option name general, to allow for that.
> 
> And indeed, this is a point-fix patch. I've been playing around with a
> more generic patch that adds nops such that each is_stmt .loc is
> associated with a unique insn, but that was embedded in an
> fkeep-vars-live branch, so this patch is minimally addressing the first
> problem I managed to reproduce on trunk.
> 
>> and how we can avoid compare-debug failures
>> (var-tracking usually doesn't change code-generation).
>>
> 

I'll post this patch series (the current state of my fkeep-vars-live
branch) in reply to this email:

     1  [debug] Add fdebug-nops
     2  [debug] Add fkeep-vars-live
     3  [debug] Add fdebug-nops and fkeep-vars-live to Og only

Bootstrapped and reg-tested on x86_64. ChangeLog entries and function
header comments missing.

Comments welcome.

Thanks,
- Tom