Relative speeds from compiler optimizations

As an experiment for A111, I compared various compiler optimizations using the simple technique shown in this line:

r3 --do "print [size? system/options/boot speed?]"

Here are the results for different optimizations:

opt	exe-size	interp	native	memory	disk
none	519512	5855	2459	93	137
-Os	363404	5544	4132	116	164
-O1	416784	7150	4098	104	169
-O2	457744	8348	4112	114	171
-O3	560144	8215	4208	117	168

You can see that the default -O2 used for releases produces a good blend of results.

Measurements taken on a mid-priced CPU: Intel i5-2500 CPU @ 3.30GHz (quad core.)

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