[fortran, patch] Expand powi to optimal multiplications

[Feng Wang]

 --- Tobias_Schlüter <tobias.schlueter@physik.uni-muenchen.de> µÄÕýÎÄ£º> Feng
Wang wrote:
> > Hi, Tobi, Paul and others
> > This is my implementation to expand powi operator to optimal
> multiplications.
> > Since there is no echo in gcc community, we had better implement it in the
> FE
> > first. Tested on i686 and ia64.
> 
> I agree, it should be easy enough to port this to the gcc backend if 
> need arises.
> 
> > 
> > /* Implementation of raising a value to an integer power.
> >    Copyright (C) 2004 Free Software Foundation, Inc.
> >    Contributed by Feng Wang <fengwang@nudt.edu.cn>
> > 
> 
> The original copyright of libF77 is:
> (from libF77/NOTICE)
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> 
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> 
> Admittedly it's not in the files themselves, so it's easily missed. But 
> it should be included.
> 
Agree. Paul, please help me add it when applying this patch if it is
acceptable.

Feng Wang

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