> User's Guide 6.2 says:
>
> "So, when we want very fast code, we use: -O -fvia-C."
>
> but I've seen programs which use the (apparently
> undocumented) -O2-for-C flag too.
-O2-for-C was removed (from the docs at least) for three reasons:
- it is equivalent to -optc-O2
- GCC has a recent history of bugs in -O2, and we didn't want to
encourage people to use known-broken compiler options.
- it makes very little difference anyway.
Cheers,
Simon
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