src/cgen ChangeLog decode.scm utils-sim.scm ut ...

[fche at sourceware dot cygnus dot com]

CVSROOT:	/cvs/src
Module name:	src
Changes by:	fche@sources.redhat.com	2000-11-10 08:43:21

Modified files:
	cgen           : ChangeLog decode.scm utils-sim.scm utils.scm 

Log message:
	* major sim decoder improvement
	* minor diagnostic tweaks
	
	2000-11-10  Frank Ch. Eigler  <fche@redhat.com>
	
	* decode.scm (-distinguishing-bit-population): Significantly
	improve popularity heuristic.  Renamed from
	(-mask-bit-population): Gone.
	(-population-above-threshold): Sort new bit numbers in order of
	popularity.
	(-population-top-few): Allow up to three more bits to be selected
	than requested.  Correct selection order to prefer better bits.
	Correct bug in fewer-than-requested case.  Keep threshold as
	floating-point.
	(decode-best-get-bits): Pass also the insn-values.
	
	* utils-sim.scm (-gen-decoder-switch): Add comment suggesting a
	future optimization.
	
	* utils.scm (message): Format nested lists better.

Patches:
http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/cgen/ChangeLog.diff?cvsroot=src&r1=1.25&r2=1.26
http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/cgen/decode.scm.diff?cvsroot=src&r1=1.2&r2=1.3
http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/cgen/utils-sim.scm.diff?cvsroot=src&r1=1.2&r2=1.3
http://sources.redhat.com/cgi-bin/cvsweb.cgi/src/cgen/utils.scm.diff?cvsroot=src&r1=1.1.1.1&r2=1.2