Separating the slot makes treatment of the prefix much more uniform, and the
compiler trace file for x86-64 becomes easier to understand. Previously the
trace didn't decode prefix bits in the IR2 dump of assembly instructions in
each vop, while the symbolic asm listing showing vops as comments did.
The peephole optimizer's instruction matcher is also a little simpler.
arm64 could use a similar idea for its vector length prefixes.
GENERAL INFORMATION
Welcome to SBCL.
If you'd like to install or build the system, see the "INSTALL" file.
To find out more about who created the system, see the "CREDITS" file.
If you'd like information about the legalities of copying the system,
see the "COPYING" file.
The "DOCUMENTATION" file describes the various formats and ways to
access the documentation.
The system is a work in progress. See the "TODO" file in the source
distribution for some highlights.
See the "BUGS" file for how to view or report bugs.
If you'd like to make suggestions or help to improve the system,
please send mail to one of the mailing lists:
sbcl-help@lists.sourceforge.net
sbcl-devel@lists.sourceforge.net
Note that as a spam reduction measure you must subscribe to the lists
before you can post: https://sourceforge.net/p/sbcl/mailman/
The "HACKING" file has more details regarding hacking on and
contributing to SBCL.
SYSTEM-SPECIFIC HINTS
for OpenBSD 6.0 and newer:
SBCL must be built and run from a filesystem with the "wxallowed"
mount option, such as /usr/local in the default install.