[PATCH] configs: at91: sama5d2_icp_mmc: Enable CONFIG_LTO

[Tom Rini]

On Thu, Apr 27, 2023 at 11:26:46AM +0200, Stefan Roese wrote:
> Hi Eugen,
> 
> On 4/27/23 11:19, Eugen Hristev wrote:
> > Hi Stefan,
> > 
> > Thank you for the patch.
> > 
> > This I guess is a workaround such that you can add a bit more of code.
> > In the end, it's not scalable, and we have to find a better way,
> > probably by removing some of the code to make the SPL smaller.
> 
> U-Boot image size increase resulting in overflowing some limits is
> a common problem, especially in SPL. Enabling LTO gives quite some good
> improvements in image size decrease. So I don't think it's an
> workaround.
> 
> > How does this impact the size? How much we are gaining ?
> 
> I did not measure this. I just checked that this target compiles clean
> again with LTO enabled and the MMC related patches applied.

Note that buildman already has flags to tell you how much the size
changed and in what functions between commits.

-- 
Tom
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