[patch] Reduced profiler overhead for expressions

[Don McCoy]

This patch corrects a performance issue for profiling expressions that 
occurred when the profile mode was set to none.  The performance is now 
almost as good as it is when profiling is disabled at configuration time.

Regards,

-- 
Don McCoy
don (at) CodeSourcery
(888) 776-0262 / (650) 331-3385, x712
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