Abt RTL expression - Optimization

[Andrew Pinski]

On Mon, 2006-10-23 at 16:14 +0530, Rohit Arul Raj wrote:
> Hi all,
> 
> This small bit of code worked fine with all optimization except Os.

If you are working with 4.0 and greater, there are optimizations that
happen before RTL, called the Tree-ssa optimizations.  The optimization
you are noticing here is called forward propagation.

Thanks,
Andrew Pinski