Optimization of conditional access to globals: thread-unsafe?

[Tomash Brechko]

On Mon, Oct 29, 2007 at 12:54:22 +0100, Andi Kleen wrote:
> See http://gcc.gnu.org/ml/gcc/2007-10/msg00607.html for a test case
> that shows where it can go horrible wrong (optimized code significantly 
> slower than unoptimized code) Admittedly it is a constructed
> one, but I don't think it is that unrealistic.

Thanks.  I had to change %Lu to %lu, and the example shows the point
when run multiple times.



-- 
   Tomash Brechko