[pcre-dev] Is compiling 10.35 PCRE2 with -Ofast safe?

[Avery Tarasov]

I'm looking to optimize PCRE2 10.35 for speed as much as possible on my 
GCC 10.2/MingW setup.  I know the default PCRE2 flag uses O2, and I have 
used Ofast before without issue, but I don't know how safe it really 
is.  I searched Google and couldn't find and documentation about the 
safety/feasibility of alternative optimization levels with PCRE2.  Is 
Ofast completely safe?  If not, what about O3?  If either are not safe 
what are the specific risks/etc?

Thanks so much for any feedback / suggestions!!
Best Regards,

-Avery T.

A huge PCRE fan

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