PATCH, middle-end: fix semantic bug in dse.c

[Kenneth Zadeck]

Ben Elliston wrote:
> On Wed, 2009-05-06 at 08:58 +0200, Jakub Jelinek wrote:
>
>   
>> I think Kenny should review this.
>>     
>
> Ping?
>
> Thanks,
> Ben
>
>   
Actually i take that my last mail back, this patch is fine.  
I was confused about the piece of dead code on line 1362.   The block
mem cases have been handled
before you get there so the test for BLKmode there always goes false.  

This should probably be cleaned up.

kenny