🚀 go-pugleaf

In article <39803@bbn.COM> slackey@BBN.COM (Stan Lackey) writes:
| A static analysis of registers-used can be very misleading. The way
| the Alliant compiler assigned registers was by cycling through all
| those available.  This was because the machine was designed with a
| scalar pipeline, and the allocator was trying to give the peepholer
| the best chance at scheduling.  With this algorithm, the number of
| registers used is "all of them".  To derive the number NEEDED requires
| lots more work, and is certain to be not ony application dependent,
| but likely even more dependent upon the writing style of the software
| engineer.

Agreed.  I just posted the static analysis because it was all I had time
for.  However, the compiler that was used does attempt to minimize
register usage through coloring, and does not use the cycling technique
you mention.



	-- Tim Olson
	Advanced Micro Devices
	(tim@amd.com)