+ Add for loop code optimization using notifications
results in 1.5-1.9% speed improvement in nestloop benchmark
Optimization incomplete, compiler does not cycle yet with
notifications enabled.
for providing information for several optimizations. For example
the value of the loop variable of a for loop does matter is the
variable is read after the for loop, but if it's no longer used
or written, it doesn't matter and this can be used to optimize
the loop code generation.
