[RFApproval, trunk] Optimization of Complex OP Real.

[Andrew Pinski]

I did not see a patch could you sent the patch again?

Thanks,
Andrew Pinski

> 
> L.S.,
> 
> Several times in the past year I've been asked when g77 would support
> the optimization that eliminates the superfluous instructions that
> result from adding, multiplying by or dividing zero when Complex OP Real
> deals with its imaginary part.
> 
> This patch is a first shot at this optimization [obviously, it can only
> be applied under "unsafe-math" assumptions].  Passes make bootstrap (C
> and Fortran only), make check and make install on i686-pc-linux-gnu.  It
> also passes a comparison with mainline gcc/g77 (using -O2 -ffast-math)
> compiling and checking LAPACK.
> 
> OK to install on mainline ?
> 
> Thanks,
> 
> -- 
> 
>