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Re: Enable first scheduling pass for SH4

On Wed, 19 Nov 2003 18:20:20 -0500, Vladimir Makarov <> wrote:

Sanjiv Kumar Gupta wrote:

On Thu, 13 Nov 2003 12:18:11 -0500, Vladimir Makarov <>
> So if you decide not to implement this approach, I would prefer the
> previous machine-depnendent approach. Just let me know and I'll look at
> the previous patch again and probably approve it.

Here is the link:

I can submit a follow-up patch if you want some changes.


I've examined the patch.  In whole, the patch is ok.  But I have some
minor comments:

Thanks for the review. I have made the changes and added documentation in tm.texi for new hooks. I will submit after the test cycle is complete.

o Shed1 is switched on for SH5 too.  Your hooks work for all
subtargets but sh4 is not mentioned there.  If the code is
to work for sh5 too (I am not sure about this.  I think it will
require additional benchmarking and tuning), you should be more
accurate in calculation of register pressure for sh5 because
values of DImode and DFmode can be placed in one register for sh5.
If it is not the code checking subtarget should be added (which is
a good practice in any case because new subtargets could be added
in future).

Enabled sched1 only when target is TARGET_HARD_SH4.


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