[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] Solaris (#479)

[K K Subbu]

On 06/04/20 10:24 AM, Tobias Pape wrote:
>> Production builds should be using -O and not "-g -Ox" option.
> 
> Why? Really. It rather depends on the compiler, no? With gcc and
> clang, -g+-O is actually a good idea, especially if you use
> "external" debug symbols like dwarf directories...

Yes, debug options are compiler dependent to balance between speed 
optimization and ease of debugging. For instance, gcc recommends:

----https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html
If you are not using some other optimization option, consider using -Og 
(see Optimize Options) with -g. With no -O option at all, some compiler 
passes that collect information useful for debugging do not run at all, 
so that -Og may result in a better debugging experience.
----

I would expect alpha and possibly beta to use debug but RC or release 
versions to optimize aggressively for speed. Debug builds may be 
instrumented for bounds check, initialized alloc, leak checks, overflow 
checks etc. These could slow down squeak vm.

Regards .. Subbu