pmichaud@kiwi:~/p6/rakudo-qrpa$ cat z2.pir
.loadlib 'src/pmc/perl6_group'

.sub 'main' :main
    .local pmc p, q
    p = new "ResizablePMCArray"
    q = new "QRPA"

    $P0 = box 'abc'

    p[$I0] = $P0
    q[$I0] = $P0

    .local int N
    N = 20000000

    print " rpa[$I0] = "
    'time_lookup'(p, N)

    print "qrpa[$I0] = "
    'time_lookup'(q, N)
.end


.sub 'time_lookup'
    .param pmc p
    .param int N
    .local num t0, t1

    $I0 = 0
    t0 = time
  loop1:
    unless N > 0 goto done1
    # noop
    $P0 = p[$I0]
    dec N
    goto loop1
  done1:
    t1 = time
    $N0 = t1 - t0
    say $N0
.end

pmichaud@kiwi:~/p6/rakudo-qrpa$ install/bin/parrot z2.pir
 rpa[$I0] = 0.651993989944458
qrpa[$I0] = 0.776318073272705