Diff of /sml/trunk/HISTORY

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	revision 701, Thu Aug 31 08:46:43 2000 UTC	revision 819, Mon May 7 18:39:08 2001 UTC
#	Line 13	Line 13
13	Description:	Description:
14	----------------------------------------------------------------------	----------------------------------------------------------------------
15	Name: Matthias Blume	Name: Matthias Blume
16		Date: 2001/05/07 14:40:00 EDT
17		Tag: blume-20010507-proxies
18		Description:
19
20		I made into "proxy libraries" all libraries that qualify for such a
21		change.  (A qualifying library is a library that has another library or
22		groups as its sole member and repeats that member's export list
23		verbatim.  A proxy library avoids this repetition by omitting its export
24		list, effectively inheriting the list that its (only) member exports.
25		See the CM manual for more explanation.)
26		The main effect is that explicit export lists for these libraries
27		do not have to be kepts in sync, making maintenance a bit easier.
28
29		I also added copyright notices to many .cm-files.
30
31		Last but not least, I made a new set of bootfiles.
32
33		----------------------------------------------------------------------
34		Name: Matthias Blume
35		Date: 2001/05/04 17:00:00 EDT
36		Tag: blume-20010504-cm-lsplit
37		Description:
38
39		0. John merged pending changes to $/smlnj-lib.cm
40
41		1. Allen's previous change accidentally backed out of one of Lal's
42		earlier changes.  I undid this mistake (re-introducing Lal's change).
43
44		2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
45		within the compiler where applicable.  There is some code simplification
46		because of that.
47
48		3. The "split" phase (in FLINT) is now part of the default list of phases.
49		Compiler.Control.LambdaSplitting.* can be used to globally control the
50		lambda-splitting (cross-module-inlining) engine.  In addition to that,
51		it can now also be controlled on a per-source basis: CM has been taught
52		a new tool parameter applicable to ML source files.
53
54		- To turn lambda-splitting off completely:
55		local open Compiler.Control.LambdaSplitting in
56		val _ = set Off
57		end
58		- To make "no lambda-splitting" the global default (but allow per-source
59		overriding); this is the initial setting:
60		local open Compiler.Control.LambdaSplitting in
61		val _ = set (Default NONE)
62		end
63		- To make "lambda-splitting with aggressiveness a" the global default
64		(and allow per-source overriding):
65		local open Compiler.Control.LambdaSplitting in
66		val _ = set (Default (SOME a))
67		end
68
69		- To turn lambda-splitting off for a given ML souce file (say: a.sml)
70		write (in the respective .cm-file):
71		a.sml (lambdasplitting:off)
72		- To turn lambda-splitting for a.sml on with minimal aggressiveness:
73		a.sml (lambdasplitting:on)
74		- To turn lambda-splitting for a.sml on with aggressiveness <a> (where
75		<a> is a decimal non-negative integer):
76		a.sml (lambdasplitting:<a>)
77		- To turn lambda-splitting for a.sml on with maximal aggressiveness:
78		a.sml (lambdasplitting:infinity)
79		- To use the global default for a.sml:
80		a.sml (lambdasplitting:default)
81		or simply
82		a.sml
83
84		----------------------------------------------------------------------
85		Name: Allen Leung
86		Date: 2001/05/04 01:57:00 EDT
87		Tag: leunga-20010504-sync
88		Description:
89
90		MLRISC features.
91
92		1. Fix to CMPXCHG instructions.
93		2. Changed RA interface to allow annotations in callbacks.
94		3. Added a new method to the stream interface to allow annotations updates.
95
96		----------------------------------------------------------------------
97		Name: Matthias Blume
98		Date: 2001/05/01 11:45:00 EDT
99		Tag: blume-20010501-pcedittmp
100		Description:
101
102		Changed install.sh to use the current working directory instead of
103		/usr/tmp for a temporary file (pcedittmp).  The previous choice
104		of /usr/tmp caused trouble with MacOS X because of file premission
105		problems.
106
107		----------------------------------------------------------------------
108		Name: Matthias Blume
109		Date: 2001/04/20 11:10:00 EDT
110		Tag: blume-20010420-inMLflag
111		Description:
112
113		- added vp_limitPtrMask to vproc-state.h
114		(for use by the raw-C-calls mechanism to implement proper interrupt
115		handling)
116		- made the ML compiler aware of various data-structure offsets so it
117		can generate code for accessing the vp_inML flag and vp_limitPtrMask
118		- tweaked mlriscGen.sml to have it emit interrupt-handling code for
119		raw C-calls
120
121		----------------------------------------------------------------------
122		Name: Lal George
123		Date: 2001/04/20 09:15:28 EDT
124		Tag: george-20010420-macosX
125		Description:
126
127		- Changes to port to Mac OS X; Darwin.
128
129		- In the process I found that sqrt was broken on the PPC, because the
130		fsqrt instruction is not implemented.
131
132		----------------------------------------------------------------------
133		Name: Matthias Blume
134		Date: 2001/04/18 12:45:00 EDT
135		Tag: blume-20010418-ccalls
136		Description:
137
138		- fixed two off-by-4 errors in the x86-specific c-calls implementation
139		(this bug prevented structure arguments containing pointers from being
140		passed correctly)
141		- changed the raw-C-call code in mlriscGen.sml in such a way that
142		structure arguments are represented as a pointer to the beginning
143		of the structure (instead of having a series of synthesized arguments,
144		one for each structure member)
145
146		- made makeml script's verbosity level configurable via environment
147		variable (MAKEML_VERBOSITY)
148
149		- eliminated placeholder implementations for f32l, w16s, i16s, and f32s
150		in rawmem-x86.sml; we are now using the real thing
151
152		----------------------------------------------------------------------
153		Name: Matthias Blume
154		Date: 2001/03/22 16:25:00 EST
155		Tag: blume-20010322-bootfiles
156		Description:
157
158		Created a new set of bootfiles (for your automatic installation convenience).
159
160		----------------------------------------------------------------------
161		Name: Matthias Blume
162		Date: 2001/03/22 15:10:00 EST
163		Tag: blume-20010322-rawmem-parcm
164		Description:
165
166		1. All "raw memory access" primitives for the new FFI are implemented now
167		(at least on the x86).
168		2. Some further cleanup of CM's parallel make mechanism.
169
170		----------------------------------------------------------------------
171		Name: Matthias Blume
172		Date: 2001/03/19 17:53:00 EST
173		Tag: blume-20010319-parallel
174		Description:
175
176		Parallel make (using compile servers) now works again.
177
178		To this end, CM.stabilize and CMB.make have been modified to work in
179		two passes when compile servers are attached:
180		1. Compile everything, do not perform stabilization; this pass
181		uses compile servers
182		2. Stabilize everything; this pass does not use compile servers
183		If there are no compile servers, the two passes are combined into one
184		(as before).  Splitting the passes increases the inherent parallelism
185		in the dependency graph because the entire graph including all
186		libraries is available at the same time.  This, in turn, improves
187		server utilization.  The downside is that the master process will
188		have to do some extra work after compilation is done (because for
189		technical reasons it must re-read all the binfiles during stabilization).
190
191		----------------------------------------------------------------------
192		Name: Matthias Blume
193		Date: 2001/03/16 12:22:00 EST
194		Tag: blume-20010316-bootfiles
195		Description:
196
197		Created a new set of bootfiles (for your automatic installation convenience).
198
199		----------------------------------------------------------------------
200		Name: Matthias Blume
201		Date: 2001/03/16 11:00:00 EST
202		Tag: blume-20010316-MLTREE-fixup
203		Description:
204
205		This is a minor fixup for an (untagged) earlier commit by Allen.
206		(A file was missing).
207
208		----------------------------------------------------------------------
209		Name: Allen Leung
210		Date: Mon Mar  5 18:54:57 EST 2001
211		Tag: leunga-20010305-cut-support
212
213		1. New support for alternative control-flow in MLTREE.
214		Currently we support
215
216		FLOW_TO(CALL ...., [k1,...,kn])
217
218		This is needed for 'cuts to' in C-- and try/handle-like constructs
219		in Moby
220
221		New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
222
223		2. Register Allocator
224
225		Changes in interface [from Fermin, John]
226
227		3. Alpha 8-bit SLL support [Fermin]
228
229		4. All architectures
230
231		A new module (ClusterExpandCopies) for expanding parallel copies.
232
233		----------------------------------------------------------------------
234		Name: Allen Leung
235		Date: 2001/02/27 23:07:00 EST
236		Tag: leunga-20010227-minor-stuff
237
238		1. Alpha bug fix for CMOVNE
239		2. Handle mltree COND(..,FCMP ...,...)
240		3. Bug fix in simplifier
241
242		----------------------------------------------------------------------
243		Name: Matthias Blume
244		Date: 2001/01/30 17:50:00 EST
245		Tag: blume-20010130-sync
246		Description:
247
248		This is just a minor update to sync my devel branch with the main brach.
249		The only visible change is the addition of some README files.
250
251		----------------------------------------------------------------------
252		Name: Matthias Blume
253		Date: 2001/01/12 23:30:00 JST
254		Tag: blume-20010112-bootfiles
255		Description:
256
257		Made a new set of bootfiles that goes with the current state of the
258		repository.
259
260		----------------------------------------------------------------------
261		Name: Matthias Blume
262		Date: 2001/01/12 21:20:00 JST
263		Tag: blume-20010112-sync
264		Description:
265
266		I am just flushing out some minor changes that had accumulated in
267		my private branch in order to sync with the main tree.  (This is
268		mainly because I had CVS trouble when trying to merge _into_ my
269		private branch.)
270
271		Most people should be completely unaffected by this.
272
273		----------------------------------------------------------------------
274		Name: Allen Leung
275		Date: Thu Jan 11 21:03:00 EST 2001
276		Tag: leunga-20010111-labexp=mltree
277		Description:
278
279		1.  Removed the type LabelExp and replace it by MLTree.
280		2.  Rewritten mltree-simplify with the pattern matcher tool.
281		3.  There were some bugs in alpha code generator which would break
282		64-bit code generation.
283		4.  Redo the tools to generate code with the
284		5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
285		are now generated by perl scripts.
286
287		----------------------------------------------------------------------
288		Name: Matthias Blume
289		Date: 2001/01/10 21:55:00 JST
290		Tag: blume-20010110-rcc
291		Description:
292
293		The RCC stuff now seems to work (but only on the x86).
294		This required hacking of the c-calls interface (and -implementation) in
295		MLRISC.
296
297		Normal compiler users should be unaffected.
298
299		----------------------------------------------------------------------
300		Name: Matthias Blume
301		Date: 2001/01/09 01:20:00 JST
302		Tag: blume-20010109-rcc
303		Description:
304
305		This is a fairly big patch, flushing out a large number of pending
306		changes that I made to my development copy over the last couple of days.
307
308		Of practical relevance at this moment is a workaround for a pickling
309		bug that Allen ran into the other day.  The cause of the bug itself is
310		still unknown and it might be hard to fix it properly, but the
311		workaround has some merits of its own (namely somewhat reducing pickling
312		overhead for certain libraries).  Therefore, I think this solution should
313		be satisfactory at this time.
314
315		The rest of the changes (i.e., the vast majority) has to do with my
316		ongoing efforts of providing direct support for C function calls from
317		ML.  At the moment there is a new primop "RAW_CCALL", typing magic
318		in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
319		case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
320		translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
321		handle RCC.
322
323		The last part (the changes to mlriscGen.sml) are still known to be
324		wrong on the x86 and not implemented on all other architectures.  But
325		the infrastructure is in place. I had to change a few functor
326		signatures in the backend to be able to route the CCalls interface
327		from MLRISC there, and I had to specialize the mltree type (on the
328		x86) to include the necessary extensions. (The extensions themselves
329		were already there and redy to go in MLRISC/x86).
330
331		Everything should be very happy as soon as someone helps me with
332		mlriscGen.sml...
333
334		In any case, nothing of this should matter to anyone as long as the
335		new primop is not being used (which is going to be the case unless you
336		find it where I hid it :). The rest of the compiler is completely
337		unaffected.
338
339		----------------------------------------------------------------------
340		Name: Matthias Blume
341		Date: 2001/01/05 00:30:00 JST
342		Tag: blume-20010105-primops
343		Description:
344
345		Added some experimental support for work that I am doing right now.
346		These changes mostly concern added primops, but there is also a new
347		experimental C library in the runtime system (but currently not enabled
348		anywhere except on Linux/X86).
349
350		In the course of adding primops (and playing with them), I discovered that
351		Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
352		broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
353		To recover, I made type information in INL_PRIM mandatory and changed
354		prim.sml as well as built-in.sml accordingly.  The InLine structure now
355		has complete, correct type information (i.e., no bottom types).
356
357		Since all these changes mean that we need new binfiles, I also bumped the
358		version number to 110.32.1.
359
360		----------------------------------------------------------------------
361		Name: Matthias Blume
362		Date: 2000/12/30 22:10:00 JST
363		Tag: blume-20001230-various
364		Description:
365
366		Added proxy libraries for MLRISC and let MLRISC libraries refer
367		to each other using path anchors.  (See CM manual for explanation.)
368
369		Updated CM documentation.
370
371		Fixed some bugs in CM.
372
373		Implemented "proxy" libraries (= syntactic sugar for CM).
374
375		Added "-quiet" option to makeml and changed runtime system accordingly.
376
377		Added cleanup handler for exportML to reset timers and compiler stats.
378
379		----------------------------------------------------------------------
380		Name: Lal George
381		Date: 2000/12/22 22:22:58 EST 2000
382		Tag: Release_110_32
383		Description:
384
385		Infinite precision used throughout MLRISC.
386		see MLRISC/mltree/machine-int.sig
387
388		----------------------------------------------------------------------
389		Name: Matthias Blume
390		Date: 2000/12/22 23:16:00 JST
391		Tag: blume-20001222-warn
392		Description:
393
394		Corrected wording and formatting of some CM warning message which I
395		broke in my previous patch.
396
397		----------------------------------------------------------------------
398		Name: Matthias Blume
399		Date: 2000/12/22 21:20:00 JST
400		Tag: blume-20001222-anchorenv
401		Description:
402
403		Fixed CM's handling of anchor environments in connection with CMB.make.
404
405		----------------------------------------------------------------------
406		Name: Matthias Blume
407		Date: 2000/12/22 13:15:00 JST
408		Tag: blume-20001222-cleanup
409		Description:
410
411		Removed src/cm/ffi which does not (and did not) belong here.
412
413		----------------------------------------------------------------------
414		Name: Matthias Blume
415		Date: 2000/12/21 23:55:00 JST
416		Tag: blume-20001221-exn
417		Description:
418
419		Probably most important: CM no longer silently swallows all exceptions
420		in the compiler.
421		Plus: some other minor CM changes.  For example, CM now reports some
422		sizes for generated binfiles (code, data, envpickle, lambdapickle).
423
424		----------------------------------------------------------------------
425		Name: Matthias Blume
426		Date: 2000/12/15 00:01:05 JST
427		Tag: blume-20001215-dirtool
428		Description:
429
430		- "dir" tool added.
431		- improvements and cleanup to Tools structure
432		- documentation updates
433
434		----------------------------------------------------------------------
435		Name: Allen Leung
436		Date: Thu Dec 14 03:45:24 EST 2000
437		Description:
438		Tag:  leunga-20001214-int-inf
439		Description:
440
441		In IntInf, added these standard functions, which are missing from our
442		implementation:
443
444		andb : int * int -> int
445		xorb : int * int -> int
446		orb  : int * int -> int
447		notb : int -> int
448		<<   : int * word -> int
449		~>>  : int * word -> int
450
451		Not tested, I hope they are correct.
452
453		----------------------------------------------------------------------
454		Name: Allen Leung
455		Date: Fri Dec  8 19:23:26 EST 2000
456		Description:
457		Tag:  leunga-20001208-nowhere
458		Description:
459
460		Slight improvements to the 'nowhere' tool to handle OR-patterns,
461		to generate better error messages etc.  Plus a brief manual.
462
463		----------------------------------------------------------------------
464		Name: Lal George
465		Date: 2000/12/08 09:54:02 EST 2000
466		Tag: Release_110_31
467		Description:
468
469		- Version 110.31
470		----------------------------------------------------------------------
471		Name: Allen Leung
472		Date: Thu Dec  7 22:01:04 EST 2000
473		Tag:  leunga-20001207-cell-monster-hack
474		Description:
475
476		Major MLRISC internal changes.  Affect all clients.
477		Summary:
478
479		1.  Type CELLS.cell = int is now replaced by a datatype.
480		As a result, the old regmap is now gone.  Almost all interfaces
481		in MLRISC change as a consequence.
482
483		2.  A new brand version of machine description tool (v3.0) that generates
484		modules expecting the new interface.  The old version is removed.
485
486		3.  The RA interface has been further abstracted into two new functors.
487		RISC_RA and X86RA.  These functors have much simpler interfaces.
488		[See also directory MLRISC/demo.]
489
490		4.  Some other new source->source code generation tools are available:
491
492		a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
493		b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
494		I use this tool to generate the peephole optimizers---with the new
495		cell type changes, peephole rules are becoming difficult to write
496		without conditional pattern matching.
497
498		5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
499		cover the entire MLRISC source tree so many things broke.
500
501		6.  CM files have been moved to the subdirectory MLRISC/cm.
502		They are moved because there are a lot of them and they clutter up the
503		root dir.
504
505		7.  More detailed documentation to come...
506
507		NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
508		a makeml -rebuild first.  This is because of other other
509		changes that Matthias has made (see below).
510
511
512		----------------------------------------------------------------------
513		Name: Matthias Blume
514		Date: 2000/11/30 23:12:00 JST
515		Tag: blume-20001130-filereorg
516		Description:
517
518		Some manual updates and some file reorganizations in CM.
519
520		----------------------------------------------------------------------
521		Name: Matthias Blume
522		Date: 2000/11/24 17:45:00 JST
523		Tag: blume-20001124-link
524		Description:
525
526		Drastically improved link traversal code for the case that the dynamic
527		value was already loaded at bootstrap time.  As a result, CM and CMB
528		now both load blazingly fast -- even on a very slow machine.  Also,
529		memory consumption has been further reduced by this.
530
531		Warning: The format of the PIDMAP file has changed.  THerefore, to
532		bootstrap you have to do this:
533
534		1. Run CMB.make
535		2. Make a symbolic link for the boot directory:
536		ln -s sml.boot.ARCH-OS xxx
537		3. "Rebuild" the boot directory:
538		./makeml -boot xxx -rebuild sml ; rm xxx
539		4. Boot normally:
540		./makeml
541
542		----------------------------------------------------------------------
543		Name: Matthias Blume
544		Date: 2000/11/21 21:20:00 JST
545		Tag: blume-20001121-tools
546		Description:
547
548		Continued hacking on autoloading problem -- with success this time.
549		Also changed tool-plugin mechanism.  See new CM manual.
550
551		----------------------------------------------------------------------
552		Name: Matthias Blume
553		Date: 2000/11/19 14:30:00 JST
554		Tag:  blume-20001119-autoload
555		Description:
556
557		Some hacking to make autoloading faster.  Success for CMB, no success
558		so far for CM.  There is a reduced structure CM' that autoloads faster.
559		(This is a temporary, non-documented hack to be eliminated again when
560		the general problem is solved.)
561
562		----------------------------------------------------------------------
563		Name: Matthias Blume
564		Date: 2000/11/17 14:10:00 JST
565		Tag: blume-20001117-pickle-lib
566		Description:
567
568		1. Eliminated comp-lib.cm
569		2. Made pickle-lib.cm
570		3. Eliminated all uses of intset.sml (from comp-lib.cm)
571		4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
572		equivalent constructs from smlnj-lib.cm (INtHashTable).
573		5. Point 4. also goes for those uses of intmap.* in MLRISC.
574		Duplicated intmap modules thrown out.
575		6. Hunted down all duplicated SCC code and replaced it with
576		equivalent stuff (GraphSCCFn from smlnj-lib.cm).
577		7. Rewrote Feedback module.
578		8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
579		should be thrown out and equivalent modules from smlnj-lib.cm
580		should be used (IntRedBlackSet, IntListSet, ...).
581
582		Confirmed that compiler compiles to fixpoint.
583
584		----------------------------------------------------------------------
585		Name: Allen Leung
586		Date: 2000/11/10 18:00:00
587		Tag: leunga-20001110-new-x86-fp
588
589		A new x86 floating point code generator has been added.
590		By default this is turned off.  To turn this on, do:
591
592		CM.autoload "$smlnj/compiler.cm";
593		Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
594
595		Changes:
596
597		1.  Changed FTAN to FPTAN so that the assembly output is correct.
598		2.  Changed the extension callback for FTANGENT to generate:
599
600		fptan
601		fstp  %st(0)
602		instead of
603		fptan
604		fstpl ftempmem
605
606		3.  Numerous assembly fixes for x86.
607
608		5.  Cleaned up the machine code output module x86/x86MC.sml and added
609		support for a whole bunch of instructions and addressing modes:
610
611		fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
612		faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
613		fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
614		fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
615		fxch %st(n)
616		fld %st(n)
617		fst %st(n)
618		fst mem
619		fstp %st(n)
620		fucom %st(n)
621		fucomp %st(n)
622
623		All these are now generated when the fast fp mode is turned on.
624
625		6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
626
627		----------------------------------------------------------------------
628		Name: Matthias Blume
629		Date: 2000/11/09 11:20:00 JST
630		Tag: blume-20001109-scc
631		Description:
632
633		Eliminated some code duplication:
634
635		1. Added "where" clause to GraphSCCFn in SML/NJ Library.
636		(Otherwise the functor is useless.)
637		2. Used GraphSCCFn where SCCUtilFun was used previously.
638		3. Got rid of SCCUtilFun (in comp-lib.cm).
639
640		----------------------------------------------------------------------
641		Name: Lal George
642		Date: 2000/11/06 09:02:21 EST 2000
643		Tag: Release_110_30
644		Description:
645
646		- Version 110.30
647		----------------------------------------------------------------------
648		Name: Matthias Blume
649		Date: 2000/11/04 14:45:00
650		Tag: blume-20001104-mlbuild
651		Description:
652
653		- Made ml-build faster on startup.
654		- Documentation fixes.
655
656		----------------------------------------------------------------------
657		Name: Matthias Blume
658		Date: 2000/11/02 17:00:00 JST
659		Tag: blume-20001102-condcomp
660		Description:
661
662		- Small tweaks to pickler -- new BOOTFILES!
663		- Version bumped to 110.29.2.
664		- Added conditional compilation facility to init.cmi (see comment there).
665		----------------------------------------------------------------------
666		Name: Allen Leung
667		Date: 2000/10/23 19:31:00
668		Tag: leunga-20001023-demo-ra
669
670		1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
671		2. Test programs for the graph library updated
672		3. Some new MLRISC demo programs added
673
674		----------------------------------------------------------------------
675		Name: Matthias Blume
676		Date: 2000/08/31 22:15:00 JST
677		Tag: blume-20001017-errmsg
678		Description:
679
680		More error message grief: Where there used to be no messages, there
681		now were some that had bogus error regions.  Fixed.
682
683		----------------------------------------------------------------------
684		Name: Matthias Blume
685		Date: 2000/08/31 17:30:00 JST
686		Tag: blume-20001017-v110p29p1
687		Description:
688
689		I made a version 110.29.1 with new bootfiles.
690
691		Changes:  Modified pickler/unpickler for faster and leaner unpickling.
692		CM documentation changes and a small bugfix in CM's error reporting.
693
694		----------------------------------------------------------------------
695		Name: Lal George
696		Date: 2000/09/27 14:42:35 EDT
697		Tag: george-20000927-nodestatus
698		Description:
699
700		Changed the type of the nodestatus, so that:
701
702		SPILLED(~1)             is now SPILLED
703		SPILLED(m) where m>=0   is now MEMREG(m)
704		SPILLED(s) where s<~1   is now SPILL_LOC(~s)
705
706		----------------------------------------------------------------------
707		Name: Matthias Blume
708		Date: 2000/09/07 14:45:00 JST
709		Tag: blume-20000907-cmerrmsg
710		Description:
711
712		Small tweak to CM to avoid getting ML syntax error messages twice.
713
714		----------------------------------------------------------------------
715		Name: Matthias Blume
716	Date: 2000/08/31 18:00:00 JST	Date: 2000/08/31 18:00:00 JST
717	Tag: blume-20000831-cvsbootfiles	Tag: blume-20000831-cvsbootfiles
718	Description:	Description:

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Legend: Removed from v.701   changed lines   Added in v.819

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