Do C++ signed types have modulo semantics?

[Ulrich Weigand]

Steven Bosscher wrote:

> Anyway, I've started a SPEC run with "-O2" vs. "-O2 -fwrapv".  Let's see
> how big the damage would be ;-)

Please make sure to include a 64-bit target, where it actually makes any
difference.  (I recall performance degradations of 20-30% in some
SPECfp cases from getting induction variable reduction wrong ...)

Bye,
Ulrich

-- 
  Dr. Ulrich Weigand
  Linux on zSeries Development
  Ulrich.Weigand@de.ibm.com