Yes, 'optimized' is legit. It supports more flags, for tuning
experiments, etc.
Its performance characteristics are closer to product, because
it omits all the 'assert' code,
Here are the various build subdirectories, in brief:
product -- hardwires many flag values, no asserts, code is optimized
optimized -- most flag values variable, no asserts, code is optimized
fastdebug -- all flag values variable, asserts enabled, code is
optimized
jvmg -- all flag values variable, asserts enabled, code not optimized
(debuggable)
generated -- machine-generated source code and other stuff created
during the build process
debug -- old name for jvmg; this one should go away
profiled -- dead a long time; this one should have gone away years ago
Best,
-- John
