Re: [linuxsh-dev] Re: Where does __sdivsi3_i4 come from?

[David W. <dw...@in...>]

On Thu, 2003-06-12 at 02:58, kaz Kojima wrote:
> You can find the arguments starting from
>   <URL:http://gcc.gnu.org/ml/gcc/2002-10/msg00700.html>.
> It's for powerpc, but explains why no-implicit-fp option doesn't
> exist in FSF code. Ah, It reminds me why I tried to forget about
> this option :-)

Mark Mitchell said "I agree, on all points... Clearly, many people have
a real need for this functionality." 

I think the fact that it's happening now for both PPC and SH is
indicative that it shouldn't be a machine-specific option. The only
reason that GCC doesn't use FP on other platforms is because it hasn't
yet found a case in which it's faster to do so. I can imagine it
starting to use SSE and similar stuff on i386, in future, etc.

GCC should probably have a '-mno-implicit-fp' option in _generic_ code,
and it can have no effect on those back ends which haven't yet learned
how to make use of the floating point unit without explicitly being
asked to.

-- 
dwmw2