> Well, you certainly won't get errors, because compiler optimizations
> shouldn't change expected syntax.
not always true, inb() doesn't compile without -O for example.
> -O2 is the standard optimization level for the kernel; everything is
> compiled via it. When developers test their code, nuances that the
> optimization introduce are accepted. Removing the optimization may
> break those expectations. Thus the kernel requires it.
I'm quite comfortable with the requirement, only I can't imagine
code which depends on -O and -O2 difference. Inline assembly is
handled by compiler so it should not break things ..
Maybe externaly linked assembly code ? But optimization level should
not change register usage in calling convention ..
Please can you give me example which kind of code breaks those
expectations ?
Thanks, Martin
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