[Bug gold/16808] ld.gold doesn't know about -Ofast

[ccoutant at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16808

--- Comment #4 from Cary Coutant <ccoutant at google dot com> ---
> Is the same true for ld.gold? In which case -O, -Os, -Og, -Ofast are not
> implemented and -O1 = -O2 = -O3 = -O4 and so on?

At -O1 and above, gold will use a higher compression level with
--compress-debug-sections.

At -O2 and above, gold will optimize string merge sections by finding
strings that are suffixes of longer strings.

Currently, that's it.

-cary

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