On Tue, 26 Aug 2008, Adrian Bunk wrote:
>
> I added "-fno-inline-functions-called-once -fno-early-inlining" to
> KBUILD_CFLAGS, and (with gcc 4.3) that increased the size of my kernel
> image by 2%.
Btw, did you check with just "-fno-inline-functions-called-once"?
The -fearly-inlining decisions _should_ be mostly right. If gcc sees early
that a function is so small (even without any constant propagation etc)
that it can be inlined, it's probably right.
The inline-functions-called-once thing is what causes even big functions
to be inlined, and that's where you find the big downsides too (eg the
stack usage).
Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-embedded" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
