On Sat, 2013-06-15 at 00:06 +0200, Eric Botcazou wrote:
> > The part of the scheduling change that I am interested in is the change in
> > where the addiu instruction occurs and the related changes from the positive
> > offsets to the negative offsets. Can anyone tell me where the code that
> > decides to do that is? Extra bonus points for any answer not including the
> > word 'reload'.
>
> Very likely in sched-deps.c:find_modifiable_mems and related functions.
That looks like the right place. It seems to be triggered by the
DONT_BREAK_DEPENDENCIES flag in the haifa scheduler. As an experiment,
I added DONT_BREAK_DEPENDENCIES to the scheduling flags and it no longer
did that transformation.
Thanks.
Steve Ellcey
sell...@mips.com
