[rfc] fix umul_ppmm() in our libgcc

[Alexander Kabaev]

On Sat, 13 Jun 2015 15:41:34 -0700
Adrian Chadd <adrian at freebsd.org> wrote:

> Hi,
> 
> our libgcc in -base is very .. old. It chokes when compiling for
> mips32. This patch seems to do the right thing.
> 
> Does anyone have any positive/negative feedback?
> 
> Thanks,
> 
> 
> -adrian

Newer version of GCC use similar construct, but actual multiplication
is done using more correct selection of casts:

UDItype __x = (UDItype) (USItype) (u) * (USItype) (v);

I suggest you follow their lead. No objections otherwise.

-- 
Alexander Kabaev
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