[PATCH 2/2] (g)unzip: Optimize inflate_codes()

[Joakim Tjernlund]

Rob Landley <rob at landley.net> wrote on 2010/02/08 21:26:44:
>
> On Monday 08 February 2010 11:55:16 Joakim Tjernlund wrote:
> > Ported the recent optimization from the Linux kernel.
> > This will not perform as god as the kernel version as the
> > code structure in busybox is different and I had to adopt
> > the optimization to it.
> >
> > This has seen very little testing and is a RFC only at this point.
> > The inflate speed increase in the kernel was 12-15% on ppc.
> >
> > Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund at transmode.se>
>
> That looks like a fairly significant size increase.  Is it big enough to
> justify a config option?  (This is why "make bloatcheck" exists...)

function                                             old     new   delta
inflate_codes                                        624     819    +195
.rodata                                           131741  131755     +14
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 209/0)             Total: 209 bytes
   text	   data	    bss	    dec	    hex	filename
 705967	   2137	   9072	 717176	  af178	busybox_old
 706176	   2137	   9072	 717385	  af249	busybox_unstripped