[PATCH] Strip useless type conversions after simplifying casts for VN

[Richard Guenther]

On Wed, 24 May 2006, Richard Guenther wrote:

> 
> Catch some more type conversions within FRE and PRE by ignoring useless
> type conversions for VN of casts.  (We do the same already for the
> non-simplifying path of VN).
> 
> Bootstrapped and tested on x86_64-unknown-linux-gnu for all languages + 
> Ada.
> 
> Ok for mainline?

Approved on IRC by Danny & Diego.  Applied to mainline.

Richard.

> 2006-05-24  Richard Guenther  <rguenther@suse.de>
> 
> 	* tree-ssa-pre.c (try_combine_conversion): Strip useless
> 	type conversions after folding.

--
Richard Guenther <rguenther@suse.de>
Novell / SUSE Labs