Re: [RFC] gcc feature request: Moving blocks into sections

From: Steven Rostedt
Date: Mon Aug 05 2013 - 16:02:14 EST

On Mon, 2013-08-05 at 12:57 -0700, Linus Torvalds wrote:
> On Mon, Aug 5, 2013 at 12:54 PM, Mathieu Desnoyers
> <mathieu.desnoyers@xxxxxxxxxxxx> wrote:
> >
> > I remember that choosing between 2 and 5 bytes nop in the asm goto was
> > tricky: it had something to do with the fact that gcc doesn't know the
> > exact size of each instructions until further down within compilation
> Oh, you can't do it in the coompiler, no. But you don't need to. The
> assembler will pick the right version if you just do "jmp target".

Right, and that's exactly what my patches did.

-- Steve

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