Re: Why are integer and FP registers separated?

| Yes and no. Tags may not be required, but the compiler still has to
| make sure the GC also knows it's a float. Tagging is an easy way to
| tell the GC what's what. It is probably not the best
| performance-wise, but GC without tags is not easy.


You could use implied tags, where floats are put in one set of pages,
cons are put in another set (I forget what the generic name for this
is -- Bag of Bits is what is coming to mind).


--
Michael Meissner, Cygnus Support (East Coast)
Suite 105, 48 Grove Street, Somerville, MA 02144, USA
meissner@cygnus.com, 617-629-3016 (office), 617-629-3010 (fax)
[BIBOP, big bag of pages. See subsequent messages. -John]
--

Return to the comp.compilers page.
Search the comp.compilers archives again.