powerpc/mpc2860ads:Add per-section compilation and linking support(GCI 2018)

[Joel Sherrill]

On Fri, Nov 30, 2018 at 12:30 PM Shashvat Jain <shashvatjain2002 at gmail.com>
wrote:

> Hello ,
> The per-function section linking has been enabled under this patch.
> I am adding Chris , to discuss about the differ in my bss and dec drops
> and that of Dr.Joel's
> My size drop change can be seen here
>
> ------------------------------------------------------------------------------
> The size of the sample executables without this option were:
>
>    text       data        bss        dec        hex    filename
>  257876       3416     148812     410104      641f8    ./capture.exe
>  126956       2428     145836     275220      43314    ./base_sp.exe
>  330400       4600     146916     481916      75a7c    ./cdtest.exe
> 1092476      23588     153684    1269748     135ff4    ./cxx_iostream.exe
>  654892       6056     158868     819816      c8268    ./fileio.exe
>  159260       2812     145956     308028      4b33c    ./hello.exe
>  339392       7344     152824     499560      79f68    ./loopback.exe
>  106388       2276     142644     251308      3d5ac    ./minimum.exe
>  156348       2960     145980     305288      4a888    ./nsecs.exe
>  201020       3204     146592     350816      55a60    ./paranoia.exe
>  547684      13548     175556     736788      b3e14    ./pppd.exe
>  130108       2468     145872     278448      43fb0    ./ticker.exe
>  129740       2436     149696     281872      44d10    ./unlimited.exe
>
> The size of the sample executables with this option were:
>
>    text       data        bss        dec        hex    filename
>  246508       2856     147036     396400      60c70    ./cxx_iostream.exe
>  641752       6016     158548     806316      c4dac    ./fileio.exe
>  148264       2800     145916     296980      48814    ./hello.exe
>  319252       7340     152756     479348      75074    ./loopback.exe
>  100396       2288     142556     245240      3bdf8    ./minimum.exe
>  148200       2932     145892     297024      48840    ./nsecs.exe
>  190520       3192     146552     340264      53128    ./paranoia.exe
>  531300      13544     175480     720324      afdc4    ./pppd.exe
>  124008       2472     145788     272268      4278c    ./ticker.exe
>  127848       2432     149660     279940      44584    ./unlimited.exe
>  121272       2432     145752     269456      41c90    ./base_sp.exe
>  241104       3412     148768     393284      60044    ./capture.exe
>  245424       2936     146876     395236      607e4    ./cdtest.exe
>
> ----------------------------------------------------------------------------------------------
>

Chris .. my before and after for ticker.exe are:

[joel at rtbf64c b-mpc8260ads-before]$ cd ../b-mpc8260ads
[joel at rtbf64c b-mpc8260ads]$ powerpc-rtems5-size `find . -name ticker.exe`
   text    data     bss     dec     hex filename
  86792    2364  145288  234444   393cc
./powerpc-rtems5/c/mpc8260ads/testsuites/samples/ticker.exe

I am doing a complete build from scratch -- reconfigure, build, etc. Are
you doing that as well?

Patch pushed.


> Thank you
> Regards
>
> --Shashvat
>
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