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Re: [RFC 2/3, debug] Add fkeep-vars-live

On Jul 25, 2018, Jakub Jelinek <jakub@redhat.com> wrote:

> On Tue, Jul 24, 2018 at 04:11:11PM -0300, Alexandre Oliva wrote:
>> On Jul 24, 2018, Tom de Vries <tdevries@suse.de> wrote:
>> 
>> > This patch adds fake uses of user variables at the point where they go out of
>> > scope, to keep user variables inspectable throughout the application.
>> 
>> I suggest also adding such uses before sets, so that variables aren't
>> regarded as dead and get optimized out in ranges between the end of a
>> live range and a subsequent assignment.

> But that can be done incrementally, right

Sure

> the optimizers could still move it appart

*nod*

-- 
Alexandre Oliva, freedom fighter   https://FSFLA.org/blogs/lxo
Be the change, be Free!         FSF Latin America board member
GNU Toolchain Engineer                Free Software Evangelist
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