-funsafe-loop-optimizations

[Robert Dewar]

Dale Johannesen wrote:

> The limit in the standard is 64K-1 bytes, but as a practical matter it 
> would
> certainly be wise to pick a larger limit, possibly target-dependent.

One other approach is to do a timing analysis which shows that in practice
the limit where the loop goes infinite cannot be reached. This may work in
the 64-bit case, unfortunately modern machines have got so blithering fast
that it is unlikely you can apply this in the 32-bit case.