[tree-ssa] Merge status 2004-05-03

[Diego Novillo]

On Fri, 2004-05-07 at 17:10, Andrew Haley wrote:

>   (y = y * 3) * (y = (y = y * 4) + (y = y * 5))
> 
> into (here we go)
> 
>   y = y * 3;
>   tmp1 = y;
>   y = y * 4;
>   tmp2 = y;
>   y = y * 5;
>   y = tmp2 + y;
>   y = tmp1 * y;
> 
> So, is there a reasonably easy way to generate single-use temporaries
> while gimplifying?  Then it's pretty easy.
> 
Yes, you could use is_gimple_tmp_var as your predicate for
gimplify_expr.  I *think* that should get what you are looking for.  I'm
not really concerned about the additional temporaries that may be
created.


Diego.