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Re: Live range shrinkage in pre-reload scheduling


On May 13, 2014, at 10:27 PM, Kyrill Tkachov <kyrylo.tkachov@arm.com> wrote:

> Hi all,
> 
> In haifa-sched.c (in rank_for_schedule) I notice that live range shrinkage is not performed when SCHED_PRESSURE_MODEL is used and the comment mentions that it results in much worse code.
> 
> Could anyone elaborate on this? Was it just empirically noticed on x86_64?

+ Richard Sandiford who wrote SCHED_PRESSURE_MODEL

--
Maxim Kuvyrkov
www.linaro.org


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