(PUP-3436) Optimize CPU intensitive Compiler methods
This commit contains some performance optimizations in methods
that showed up as very time consuming in the profiler when running
the rake following rake tests:
benchmark:many_modules:run
benchmark:defined_types4:run
benchmark:defined_types:run
CPU consumption with this patch in place is between 70% - 75% of
what it used to be.
Profiling was performed using stackprof
https://github.com/tmm1/stackprof