Help with a DMD patch

Sat Mar 16 15:37:45 PDT 2013

On Saturday, 16 March 2013 at 22:14:22 UTC, Igor Stepanov wrote:
> Probably a stupid question, but why do you want to use el_same? 
> As I understand it, el_same creates a copy. Why not use the 
> original, if we know that it will not change anything.

As I understand, one "elem" can appear only once in the backend 
tree. When I tried otherwise, I got asserts in the optimizer, and 
I've never seen code that reuses elem nodes.