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Re: [PATCH 3/4] bb-reorder: Add -freorder-blocks-algorithm= and wire it up
- From: Andi Kleen <andi at firstfloor dot org>
- To: Segher Boessenkool <segher at kernel dot crashing dot org>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 24 Sep 2015 08:12:55 -0700
- Subject: Re: [PATCH 3/4] bb-reorder: Add -freorder-blocks-algorithm= and wire it up
- Authentication-results: sourceware.org; auth=none
- References: <cover dot 1443028412 dot git dot segher at kernel dot crashing dot org> <a1846b548ba9345fde9fab897271215dc03b6acf dot 1443028412 dot git dot segher at kernel dot crashing dot org>
Segher Boessenkool <segher@kernel.crashing.org> writes:
>
> In effect, the changes are for -O1 (which now gets "simple" instead of
> nothing), -Os (which now gets "simple" instead of "stc", since STC results
> in much bigger code), and for targets that wish to never use STC (not in
> this patch though).
Do you have some data on the code size differences with -Os?
-Andi