On Fri, Oct 14, 2016 at 11:00 PM, Segher Boessenkool
<seg...@kernel.crashing.org> wrote:
> All out-of-line register save routines need LR, so we cannot wrap the
> LR component if there are out-of-line saves.  This didn't show up for
> testing on Linux because none of the tests there use out-of-line FPR
> saves without also using out-of-line GPR saves, which we did handle.
> This patch fixes it, and also cleans up code a little.
> Is this okay for trunk?
> Segher
> 2016-10-15  Segher Boessenkool  <seg...@kernel.crashing.org>
>         * config/rs6000/rs6000.c (rs6000_get_separate_components): Do not
>         make LR a separately shrink-wrapped component if savres_strategy
>         contains any of {SAVE,REST}_INLINE_{GPRS,FPRS,VRS}.  Do not wrap
>         GPRs if {SAVE,REST}_INLINE_GPRS.  Do not disallow all wrapping
>         when {SAVE,REST}_INLINE_GPRS.

This is okay.

Maybe rs6000 always should prefer inline save-restore when SWS is
enabled, except for optimize_size?

Thanks, David

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