Re: libm -fno-builtin

[Corinna Vinschen <vinschen at redhat dot com>]

On Jun 20 17:11, Jon Beniston wrote:
> Hi,
> 
> I've tried removing -fno-builtin for libm and the results look good. As well
> as fabs and floor, gcc also inlines creal, cimag, carg, copysign and finite.
> Some of the complex maths functions are greatly simplified, as creal & cimag
> can effectively be optimised away, whereas at the moment the function calls
> result in lots of stack manipulation. I can't see anything obviously
> problematic with this.
> 
> Overall, for my embedded target, libm code size reduced by about 4%.
> 
> Cheers,
> Jon
> 
> 
> 
> Here's a few places where it can be removed - there's also other uses in
> machine/*/configure - but I guess that is best left to the maintainers of
> those ports to remove.

Care to provide a git format-patch created patch, please?


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
Red Hat

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