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From: "nils.smeds at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/103438] Updated documentation for gcc Optimization
 command line options (sec 3.11)
Date: Fri, 26 Nov 2021 13:20:25 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103438

--- Comment #7 from Nils Smeds <nils.smeds at gmail dot com> ---
(In reply to Martin Li=C5=A1ka from comment #6)
> Lemme take a look.

Great, thanks.=20

What happens in real life inside the code is beyond me, I am mostly after t=
hat
the documentation should describe what is really happening. If --help is not
reflecting what is happening I think that is a bug that needs to be filed by
someone smarter than I  ;-)

I still am happy to provide patches to the documentation once --help is kno=
wn
to reflect reality.

I will stay tuned to see what enables the options -fprefetch-loop-arrays and
-faggressive-loop-optimizations but it appears to be the target used and not
the level of Optimization applied? Where should I look in the code to find
this?

If so, I will modify the docs accordingly: "Enabled by default on targets t=
hat
support xxxx" (whatever xxxx may be).=