-O2/-O3 Optimization bug?

[Mike]

On Wednesday, 22 January 2014 at 00:28:34 UTC, Mike wrote:
>
> "So what's the question, Mike?" I hear you say:
> 1.  Is this just one of the consequences of using -O2/-O3, and 
> I should just suck it up and deal with it?
> 2.  Is this potentially a bug in the GCC backend?
> 3.  Is this potentially a bug in GDC or the DMD frontend?
>

I always forget to add the most important piece of information:
I'm using the GDC 4.8 branch back-ported at the beginning of the 
year compiled for arm-none-eabi.