[Oberon] [Oberon...] Risc-5 Instructions statistics

[Paul Reed]

Hi Walter, Joerg,

> Someone have or know where to find statistics of use of RISC-5
> instructions in Oberon-07 programs ?

> I only quickly analyzed the four compiler modules. Here the distribution:
>  Format 0     2%  register instructions, register
> Format 1   26%  register instructions, immediate
> Format 2   49%  memory instructions (LDR/STR)  (<-- cache would really be
> great!!) Format 3   23%  branch instructions

I added some instrumentation to my own RISC emulator a while back.

For a complete recompile of my system, the instructions executed are as
follows:

total instructions executed 235144906

Arith (F0 and F1) 56377763 (23%)
  ( nofOp[0]   2888035 (5%)  nofOp[1]   1635477 (2%)  nofOp[2] 492673 (0%)
nofOp[3] 191597 (0%)
    nofOp[4]    640692 (1%)  nofOp[5]      7423 (0%)  nofOp[6]  16308 (0%)
nofOp[7]  17930 (0%)
    nofOp[8] 26864507 (47%)  nofOp[9] 23219248 (41%) nofOp[10] 388938 (0%)
nofOp[11] 12964 (0%)
   nofOp[12]       996 (0%) nofOp[13]         0 (0%) nofOp[14]    880 (0%)
nofOp[15]    95 (0%) )
nofLdr 92107302 (39%) nofLdb 9123136 (3%)
nofStr 26208017 (11%) nofStb 2858250 (1%)
nofBrt 20911510 (8%) nofBrnt 27558928 (11%)  (branches taken and not taken)

Of course, YMMV, but I hope that helps,
Paul