[gimple] assignments to volatile

[Nathan Sidwell]

On 06/26/10 20:57, Mark Mitchell wrote:

> One thing that I'm confused about is that Nathan reported inconsistency
> between the constant and non-constant cases.  But, while your table
> shows that for GCC 3.3, it doesn't show it for the current 4.6 trunk.
> Nathan, are we missing something in the test cases relative to the
> inconsistency you reported?

hm, I have just tested mainling, and I see the same as Michael -- namely a 
reread for constant assignments.   GCC 4.4.3 is different though -- it does not 
do the reread.

I'll add another row to the wiki, with 4.4.3's behaviour.

nathan
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