CPU-intensive style benchmark, and it can vary highly in
a microbenchmark depending on workload and compiler.
- 1: only for 32-bit processes
- 2: only for 64-bit processes
+ 32: only for 32-bit processes
+ 64: only for 64-bit processes
on: enable for both 32- and 64-bit processes
off: disable for both 32- and 64-bit processes