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Re: [PATCH] PR 16373: -fomit-frame-pointer when optimizing on x86

There are other systems than GNU/Linux, you know.

Yes. But for x86, which is being discussed, about all OSes are smart enough to optimize read-only sections.

-fasynchronous-unwind-tables should be a no-no for -Os.

This makes sense only to some extent unfortunately. Very often if you care about code size you also try to do -fno-rtti -fno-exceptions if possible, and in that case -fasynchronous-unwind-tables is a necessity. On the other hand, you often use -Os on a "smart OS" with powerful enough memory management, and in that case -fomit-frame-pointer -fasynchronous-unwind-tables is a better choice.

Paolo

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