[Bug ld/24373] Arm Cortex-A53 Errata 843419 workaround inserts 4K stub even when unnecessary

[jwerner at chromium dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=24373

--- Comment #2 from Julius Werner <jwerner at chromium dot org> ---
Hi Tamar,

Thanks for looking into this. I really have no idea how the linker internals
work here so I just hope you can find a way to make it work.

When you say it may get quite expensive to recompute things, you just mean
linker execution time, right? I think many users would be happy to pay even
double link times if that gains them runtime memory pressure improvements. For
my project at least, link time is not really an issue, and I'd expect the same
to be true for plenty of others.

If you're too worried about increasing link time, maybe this is an optimization
that could be hidden behind the -O flag?

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