Re: [PATCH] Turn on LRA on all targets

[Paul Koning via Gcc-patches]

> On Apr 23, 2023, at 12:47 PM, Segher Boessenkool <seg...@kernel.crashing.org> 
> wrote:
> 
> This minimal patch enables LRA for all targets.  It does not clean up
> the target code, nor does it do anything to generic code: it just
> deletes all target definitions of TARGET_LRA_P.
> 
> There are three kinds of changes:
> 
> 1) Targets that already always have LRA, but that redefine the hook
> anyway.  These are gcn, pdp11, rx, sparc, vax, and xtensa.  Nothing
> really changes for these targets with this patch (but later patches
> will delete the superfluous hook implementations).

I thought that the existing coding for pdp11 makes LRA selectable (via -mlra) 
and defaults to off.  I had planned to change it to default to on but leave it 
selectable.  I suppose just having it on is ok too, although the code from LRA 
wasn't as efficient as the old last I looked (which is a while ago).

        paul