[PATCH] Fix PR41634, ICE in DOM

[Jeff Law]

On 10/09/09 12:23, Richard Guenther wrote:
> The issue here is that we are in inconsistent state when optimizing
> redundancies and thus fail to look up an existing element.  Later
> when the stmt is updated on removing elements from the hashtable
> we remove the wrong one.  Oops.
>
> Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk.
>
> Richard.
>
> 2009-10-09  Richard Guenther<rguenther@suse.de>
>
> 	PR tree-optimization/41634
> 	* tree-ssa-dom.c (remove_local_expressions_from_table): Assert
> 	we remove the correct elements.
> 	(optimize_stmt): Make sure to update stmt operands before
> 	optimizing redundancies.
>
> 	* gcc.c-torture/compile/pr41634.c: New testcase.
>    
OK.
Jeff