H8SX: Bit instructions for review

[Jeff Law]

Naveen H.S. wrote:
>   
>>> causing the branch to be based on the output of the bit op rather
>>> than whatever was in cc0 from some previous operation
>>>       
>
> Yes, the peepholes cause the branch to be based on the output of bit.
> However, the peepholes were implemented as they generate new
> conditional bit instructions. We realize that they do not help in any 
> optimization. Hence, peepholes will be removed as per the suggestion
> and patch will be reposted when GCC returns to stage1.
>   
In the past we've created PRs to track patches waiting for the tree to 
return to stage1 (17652, 28177, 23111, 33702).  Feel free to create a 
GCC 4.5 pending patches PR and attach the updated patch to that PR to 
ensure it doesn't get lost while we wait for the tree to return to stage1.

jeff