Re: [RFA] Kill SKIP_PROLOGUE_FRAMELESS_P

[Andrew Cagney <ac131313@cygnus.com>]

> This is being done so that we don't have to multi-arch it.
> It's existence is questionable at best.

Good catch.

I don't think anyone expects SKIP_PROLOGUE_FRAMELESS_P to be 
multi-arched.  Instead, as the tm.h files (or entire architectures - 
arc) get deleted, all uses will disappear.  That letting the macro slip 
quietly off the table.

Giving the occasional macro a good swift shove never hurts.

> Basically, it allowed a target to optimize SKIP_PROLOGUE()
> if we just cared about whether the function was frameless or
> not (ie. lacked any prologue at all).
> 
> PROLOGUE_FRAMELESS_P and it's gdbarch equivalent exist and allow
> the target to perform this optimization equivalently.
> 
> So we kill SKIP_PROLOGUE_FRAMELESS_P, and for every target that
> provided it we instead make them implement PROLOGUE_FRAMELESS_P.
> 
> Now we have one less thing to make multi-arch'able.

As the patch stands, it is dependant on other changes.  Can you please 
revise this patch so that it is against the existing source base.  That 
would create an arc_... and sparc_... function,  but leave the 
sparc_linux_.. function for later.

enjoy,
Andrew