This is the mail archive of the
mailing list for the GCC project.
Re: Faster compilation speed
From: "Timothy J. Wood" <email@example.com>
Date: Wed, 14 Aug 2002 11:27:07 -0700
You can easily use much less than a full word. Foundation on
OpenStep/Mach 4.2 started storing partial ref counts in whatever spare
bits were available in each object.
We don't have any spare bits, we have 32 bits used for RTX state then
the next object is a pointer. So whatever size counter we use will
eat at a minimum a word's worth of space to get the pointers aligned