[PATCH] D43241: [ELF] - Do not crash with --emit-relocs and --icf=all together.

[George Rimar via llvm-commits]

>An interesting case that might clarify where this code should be is what
>ICF should do about SHF_LINK_ORDER.
>
>What happens if a section has SHF_LINK_ORDER and another otherwise
>identical one doesn't?
>
>Should ICF avoid merging the sections? Should it merge and keep the
>SHF_LINK_ORDER linked section?
>
>Cheers,
>Rafael

Yep. Patch for improving support of SHF_LINK_ORDER sections was D38180.
If you want, I can resurrect and rebase it too.

(A bit busy with PR36370 atm, but should finish it soon, probably today. 
After that was going to reimplement this patch).

George.