[Simh] O2 optimization on Linux

[J. David Bryan]

On Thursday, March 15, 2012 at 12:44, Bob Supnik wrote:

> Here's the "uses unsigned" status on the other simulators that I've written:
> 
> uses unsigned - GRI, HP (as rewritten by Dave Bryan), 1620, 7094, 
> Interdata 16b/32b, LGP, Alpha (unreleased), Sigma (unreleased)

I use gcc with -O2 regularly and can confirm that the HP simulator works 
properly with this setting.

                                      -- Dave