Re: [PATCH 0/3] Add __ioread32_copy() and use it

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> Under what circumstances will the compiler (or linker?) do this? 

Compiler.

> LTO enabled?

Yes it's for LTO.  The optimization allows the compiler to drop unused
functions, which is very popular with users (a lot use it to get smaller
kernel images)

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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