\\\ is here to fast up \\ for large integers.
It gains roughly a factor 2 (COG VM) by multiplexing quotient and
remainder computation in a single primitive.

| a b |
a := (SmallInteger maxVal raisedTo: 3) + (SmallInteger maxVal*3) + 1.
b := (SmallInteger maxVal raisedTo: 2) + 2.
{[a \\ b] bench.
[a \\\ b] bench.}
 #('331,000 per second.' '643,000 per second.')

Due to high usage of modular arithmetic in cryptography, this is not
totally useless.
However, I note that this message can also create a noticeable slow
down for moderately LargeInteger,
(presumably when the quotient is not large)

| a b |
a := (SmallInteger maxVal raisedTo: 2) + (SmallInteger maxVal*3) + 1.
b := SmallInteger maxVal << 4 + 1.
{[a \\ b] bench.
[a \\\ b] bench.}
 #('6,670,000 per second.' '797,000 per second.')

I wonder if this message is worth at the end...

Nicolas