Diff of /sml/trunk/HISTORY

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	revision 594, Tue Apr 4 23:41:47 2000 UTC	revision 666, Fri Jun 16 08:27:00 2000 UTC
#	Line 12	Line 12
12	Tag: <post-commit CVS tag>	Tag: <post-commit CVS tag>
13	Description:	Description:
14	----------------------------------------------------------------------	----------------------------------------------------------------------
15		Name: Matthias Blume
16		Date: 2000/06/16 17:30:00 JST
17		Tag: blume-20000616-anchorenv
18		Description:
19
20		This patch implements the long anticipated (just kidding :) "anchor
21		environment" mechanism.  In the course of doing this, I also
22		re-implemented CM's internal "SrcPath" module from scratch.  The new
23		one should be more robust in certain boundary cases.  In any case, it
24		is a lot cleaner than its predecessor (IMHO).
25
26		This time, although there is yet another boot file format change, I
27		kept the unpickler backward-compatible.  As a result, no new bootfiles
28		are necessary and bootstrapping is straightforward.  (You cannot read
29		new bootfiles into an old system, but the other way around is no
30		problem.)
31
32		Visible changes:
33
34		** 1. The $<singlearc> abbreviation for $/<singlearc> for anchored
35		paths has finally vanished.
36
37		John had critizised this as soon as I originally proposed and
38		implemented it, but at that time I did not really deeply believe
39		him. :) Now I came full-circle because I need the $<singlearc> syntax
40		in another place where it cannot be seen as an abbreviation for
41		$/<singlearc>.  To avoid the confusion, $<singlearc> now means what it
42		seems to mean (i.e., it "expands" into the corresponding anchor
43		value).
44
45		However, when paths are used as members in CM description files, it
46		continues to be true that there must be at least another arc after the
47		anchor.  This is now enforced separately during semantic analysis
48		(i.e., form a lexical/syntactical point of view, the notation is ok.)
49
50		** 2. The "cm" class now accepts an option "bind".  The option's value
51		is a sub-option list of precisely two items -- one labeled "anchor"
52		and the other one labeled "value".  As you might expect, "anchor" is
53		used to specify an anchor name to be bound, and "value" specifies what
54		the anchor is being bound to.
55
56		The value must be a directory name and can be given in either standard
57		syntax (including the possibility that it is itself an anchored path)
58		or native syntax.
59
60		Examples:
61
62		foo.cm (bind:(anchor:bar value:$mystuff/bar))
63		lib.cm (bind:(anchor:a value:"H:\\x\\y\\z"))  (* only works under windows *)
64
65		and so on.
66
67		The meaning of this is that the .cm-file will be processed with an
68		augmented anchor environment where the given anchor(s) is/are bound to
69		the given values(s).
70
71		The rationale for having this feature is this: Suppose you are trying
72		to use two different (already stable) libraries a.cm and b.cm (that
73		you perhaps didn't write yourself).  Further, suppose each of these
74		two libraries internally uses its own auxiliary library $aux/lib.cm.
75		Normally you would now have a problem because the anchor "lib" can not
76		be bound to more than one value globally.  Therefore, the project that
77		uses both a.cm and b.cm must locally redirect the anchor to some other
78		place:
79
80		a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
81		b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
82
83		This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
84		/usr/lib/smlnj/b-stuff/aux.cm, respectively.
85
86		Hard-wiring path names is a bit inflexible (and CM will verbosely warn
87		you when you do so at the time of CM.stabilize).  Therefore, you can
88		also use an anchored path as the value:
89
90		a.cm (bind:(anchor:lib value:$a-lib))
91		b.cm (bind:(anchor:lib value:$b-lib))
92
93		Now you can globally configure (using the usual CM.Anchor.anchor or
94		pathconfig machinery) bindings for "a-lib" and "b-lib".  Since "lib"
95		itself is always locally bound, setting it globally is no longer
96		meaningful or necessary (but it does not hurt either).  In fact, "lib"
97		can still be used as a global anchor for separate purposes.  As a
98		matter of fact, one can locally define "lib" in terms of a global
99		"lib":
100
101		a.cm (bind:(anchor:lib value:$lib/a))
102		b.cm (bind:(anchor:lib value:$lib/b))
103
104		** 3: The encoding of path names has changed.  This affects the way
105		path names are shown in CM's progress report and also the internal
106		protocol encoding used for parallel make.
107
108		The encoding now uses one or more ':'-separated segments.  Each
109		segments corresponds to a file that has been specified relative to the
110		file given by its preceding segment.  The first segment is either
111		relative to the CWD, absolute, or anchored.  Each segment itself is
112		basically a Unix pathname; all segments but the first are relative.
113
114		Example:
115
116		$foo/bar/baz.cm:a/b/c.sml
117
118		This path denotes the file bar/a/b/c.sml relative to the directory
119		denoted by anchor "foo".  Notice that the encoding also includes
120		baz.cm which is the .cm-file that listed a/b/c.sml.  As usual, such
121		paths are resolved relative to the .cm-files directory, so baz.cm must
122		be ignored to get the "real" pathname.
123
124		To make this fact more obvious, CM puts the names of such "virtual
125		arcs" into parentheses when they appear in progress reports. (No
126		parentheses will appear in the internal protocol encoding.)  Thus,
127		what you really see is:
128
129		$foo/bar/(baz.cm):a/b/c.sml
130
131		I find this notation to be much more informative than before.
132
133		Another new feature of the encoding is that special characters
134		including parentheses, colons, (back)slashes, and white space are
135		written as \ddd (where ddd is the decimal encoding of the character).
136
137		----------------------------------------------------------------------
138		Name: Allen Leung
139		Date: 2000/06/15 00:38:00
140		Tag: leunga-20000615-x86-peephole
141
142		x86 Peephole fix by Fermin.  Affects c-- and moby only.
143
144		----------------------------------------------------------------------
145		Name: Matthias Blume
146		Date: 2000/06/12 11:40:00
147		Tag: blume-20000612-parmakefix
148		Description:
149
150		More cleanup after changing the file naming scheme: This time I
151		repaired the parallel make mechanism for CMB.make which I broke earlier.
152
153		----------------------------------------------------------------------
154		Name: Allen Leung
155		Date: 2000/06/09 01:25:00
156		Tag: leunga-20000609-various
157
158		None of these things should affect normal SML/NJ operations
159
160		1. Peephole improvements provided by Fermin (c--)
161		2. New annotation DEFUSE for adding extra dependence (moby)
162		3. New X86 LOCK instructions (moby)
163		4. New machine description language for reservation tables (scheduling)
164		5. Fixes to various optimization/analysis modules (branch chaining, dominator
165		trees etc.)
166		6. I've changed the CM files so that they can work with versions
167		110.0.6, 110.25 and 110.28
168
169		----------------------------------------------------------------------
170		Name: Matthias Blume
171		Date: 2000/06/09 12:40:00
172		Tag: blume-20000609-log
173		Description:
174
175		- Removed all(?) remaining RCS Log entries from sources.
176
177		- Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
178		anchored paths).
179
180		----------------------------------------------------------------------
181		Name: Matthias Blume
182		Date: 2000/06/07 17:00:00 JST
183		Tag: blume-20000607-no-implicit-anchors
184		Description:
185
186		1. This update changes the default setting for
187		CM.Control.implicit_anchors from true to false.  This means that
188		implicit anchors are no longer permitted by default.  I also tried to
189		make sure that nothing else still relies on implicit anchors.
190		(This is the next step on the schedule towards a CM that does not even
191		have the notion of implicit anchors anymore.)
192
193		2. More CM manual updates.
194
195		3. I managed to track down and fix the pickling bug I mentioned last
196		time.  Because of the previously existing workaround, this entails no
197		immediate practical changes.
198
199		----------------------------------------------------------------------
200		Name: Matthias Blume
201		Date: 2000/06/06 11:15:00 JST
202		Tag: blume-20000606-lazierpickle
203		Description:
204
205		!!!! NEW BOOT FILES !!!!
206
207		* The main purpose of this update is to make library pickles lazier in
208		order to reduce the initial space penalty for autoloading a library.
209		As a result, it is now possible to have $smlnj/compiler.cm
210		pre-registered.  This should take care of the many complaints or
211		inquiries about missing structure Compiler.  This required changes to
212		CM's internal data structures and small tweaks to some algorithms.
213
214		As a neat additional effect, it is no longer necessary (for the sake
215		of lean heap image files) to distinguish between a "minimal" CM and a
216		"full" CM.  Now, there is only one CM (i.e., the "full" version:
217		$smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
218		interactive top level. ($smlnj/cm/minimal.cm is gone.)
219
220		To make the life of compiler-hackers easier, "makeml" now also
221		pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm).  In other
222		words, after you bootstrap a new sml for the first time, you will not
223		have to autoload $smlnj/cmb.cm again afterwards.  (The first time
224		around you will still have to do it, though.)
225
226		* A second change consists of major updates to the CM manual.  There
227		are now several appendices with summary information and also a full
228		specification of the CM description file syntax.
229
230		* In directory src/system I added the script "allcross".  This script
231		invokes sml and cross-compiles the compiler for all supported
232		architectures.  (Useful when providing a new set of boot files.)
233
234		* There seems to be a latent bug in my "lazy pickles" mechanism.  I
235		added a small tweak to pickle-util.sml to work around this problem,
236		but it is not a proper fix yet.  I will investigate further.  (The
237		effect of the bug was an inflation of library pickle size.)
238
239		* Version number increased to 110.28.1 (to avoid compatibility problems).
240
241		----------------------------------------------------------------------
242		Name: Allen Leung
243		Date: 2000/05/25 17:28 EDT
244		Tag: leunga-20000525-ra
245		Description:
246
247		Fixed a bug in freezing phase of the register allocator.
248
249		----------------------------------------------------------------------
250		Name: Allen Leung
251		Date: 2000/05/15 22:53 EDT
252		Tag: leunga-20000515-alpha-x86-ra
253		Description:
254
255		1. Alpha
256
257		Slight cleanup.  Removed the instruction SGNXL
258
259		2. X86
260
261		Added the following instructions to the instruction set:
262
263		ROLx, RORx,
264		BTx, BTSx, BTLx, BTRx,
265		XCHGx, and variants with the LOCK prefix
266
267		3. Register Allocation
268
269		The module ra-rewrite-with-renaming has been improved.
270
271		These have no effect on SML/NJ.
272
273		----------------------------------------------------------------------
274		Name: Matthias Blume
275		Date: 2000/05/15 16:20:00 JST
276		Tag: blume-20000515-lightrebuild
277		Description:
278
279		1. I added an alternative to "-rebuild" to "makeml".  The difference is
280		that prior to calling CMB.make' the CM-variable "LIGHT" will be
281		defined.  In effect, the command will not build any cross-compiler
282		backends and therefore finish more quickly.
283
284		The "fixpt" script also takes a "-light" switch to be able to use
285		this new facility while compiling for a fixpoint.
286
287		2. I replaced all mentions of anchored paths in group owner specifications
288		with simple relative paths (usually starting with "..").
289		The rationale is that a library's internal workings should not be
290		compromised by the lack of some anchor.  (An anchor is necessary
291		for someone who wants to refer to the library by an anchored path,
292		but it should not be necessary to build the same library in the first
293		place.)
294
295		3. I changed the way CM's tool mechanism determines the shell command
296		string used for things like ml-yacc etc. so that it does not break
297		when CM.Control.implicit_anchors is turned off.
298
299		----------------------------------------------------------------------
300		Name: Matthias Blume
301		Date: 2000/05/12 18:20:00 JST
302		Tag: blume-20000512-ml-build
303		Description:
304
305		Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
306		getting installed properly (by config/install.sh).
307
308		----------------------------------------------------------------------
309		Name: Matthias Blume
310		Date: 2000/05/12 17:30:00 JST
311		Tag: blume-20000512-anchors
312		Description:
313
314		!!! NEW BOOT FILES !!!
315
316		This change is in preparation of fading out support for "implicitly
317		anchored path names".  I went through all sources and used the
318		explicit (and relatively new) $-notation.  See system/README and the
319		CM manual for more info on this.
320
321		I also modified the anchoring scheme for some things such as "smlnj",
322		"MLRISC", "cm", etc. to take advantage of the fact that explicit
323		anchors are more expressive: anchor name and first arc do not have to
324		coincide.  This entails the following user-visible change:
325
326		You have to write $smlnj/foo/bar instead of smlnj/foo/bar.  In
327		particular, when you fire up sml with a command-line argument, say,
328		e.g.:
329
330		sml '$smlnj/cmb.cm'
331
332		At the ML toplevel prompt:
333
334		CM.autoload "$smlnj/cmb.cm";
335
336		There is also a new controller in CM.Control that can be used to turn
337		off all remaining support for implicit anchors by saying:
338
339		CM.autoload "$smlnj/
340		#set CM.Control.implicit_anchors false;
341
342		This causes CM to reject implicitly anchored paths.  This is (for the
343		time being) less permissive than the "final" version where there will
344		be no more such implicit anchors and relative paths will be just that:
345		relative.
346
347		The next step (version after next version?) will be to make the
348		default for CM.Control.implicit_anchors false.  After the dust has
349		settled, I can then produce the "final" version of this...
350
351		Note: Since bootstrapping is a bit tricky, I provided new boot files.
352
353		----------------------------------------------------------------------
354		Name: Matthias Blume
355		Date: 2000/05/11 16:30:00 JST
356		Tag: blume-20000511-sources
357		Description:
358
359		The main change is that I added function CM.sources as a generalized
360		version of the earlier CM.makedepend.  This entails the following
361		additional changes:
362
363		- CM.makedepend has been dropped.
364
365		- CM manual has been updated.
366
367		- TOOLS signature and API have been changed.
368
369		----------------------------------------------------------------------
370		Name: Allen Leung
371		Date: 2000/05/10 21:17 EDT
372		Tag: leunga-20000510-moby-c--ssa
373		Description:
374
375		Various bug fixes and new features for C--, Moby and MLRISC optimizations.
376		None of these affect SML/NJ.
377
378		1. Register Allocation
379
380		a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
381		This module tries to remove local (i.e. basic block level) redundancies
382		during spilling.
383
384		b. A new framework for performing region based register allocation.
385		Not yet entirely functional.
386
387		2. X86
388
389		a. DefUse for POP was missing the stack pointer [found by Lal]
390		b. Reload for CALL was incorrect in X86Spill [found by John]
391		c. Various fixes in X86Spill so that it can be used correctly for
392		the new spilling module.
393
394		3. SSA/IR
395
396		a. New module ir/dj-dataflow.sml implements elimination based
397		data flow analysis.
398
399		4. MLRiscGen
400
401		a. Fix for gc type annotation
402
403		5. MDGen
404
405		Various fixes for machine description -> ml code translation.  For ssa
406		only.
407
408		----------------------------------------------------------------------
409		Name: Allen Leung
410		Date: 2000/05/08 22:17 EDT
411		Tag: leunga-20000508-labexp
412		Description:
413
414		Fermin has found a few assembly problems with constant expressions
415		generated in LabelExp.  Mostly, the problems involve extra parentheses,
416		which choke on dumb assemblers.  This is his fix.
417
418		----------------------------------------------------------------------
419		Name: Dave MacQueen
420		Date: 2000/04/09 14:00 EDT
421		Tag: dbm-20000502-Version_110_28
422		Description:
423
424		1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
425
426		2. Updated config/version to 110.28
427
428		3. Updated config/srcarchiveurl
429
430		3. New boot files!
431		ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
432
433		----------------------------------------------------------------------
434		Name: Matthias Blume
435		Date: 2000/05/01 19:05:00 JST
436		Tag: blume-20000501-noweb
437		Description:
438
439		A new noweb tool has been added.  The existing system is entirely
440		unaffected by this, but some CM users have asked for renewed noweb
441		support.  Everything is documented in the CM manual.
442
443		New (plugin) libraries:
444
445		noweb-tool.cm
446		nw-ext.cm
447
448		----------------------------------------------------------------------
449		Name: Dave MacQueen
450		Date: 2000/04/30 12:40PM EDT
451		Tag: dbm-20000430-bug_fixes
452		Description:
453
454		1. Fix for bug 1498
455		smlnj/src/system/Basis/Implementation/Unsafe/object.sig
456		smlnj/src/system/Basis/Implementation/Unsafe/object.sml
457		added toRealArray function
458		smlnj/src/compiler/MiscUtil/print/ppobj.sml
459		added check for tag Obj.RealArray to array printing case in ppObj
460
461		2. Fix for bug 1510
462		smlnj/src/compiler/Semant/types/typesutil.sml
463		fixed definition of dummyargs (used by equalTycon) so that
464		dummy args are distinct types
465
466		----------------------------------------------------------------------
467		Name: Matthias Blume
468		Date: 2000/04/30 01:00:00 JST
469		Tag: blume-20000430-versions
470		Description:
471
472		1. CM version numbering added.  This is an implementation of Lal's
473		proposal for adding version numbers and version checking to .cm
474		files.  Lal said that his proposal was just that -- a proposal.
475		For the time being I went ahead and implemented it so that people
476		can comment on it.  Everything is completely backward-compatible
477		(except for the stable library format, i.e., new bootfiles!).
478
479		As usual, see the CM manual for details.
480
481		2. An alternative syntax for anchored paths has been implemented.
482		Dave has recently voiced the same concerns that I had when I did
483		this, so there should be some support.  My take is that eventually
484		I will let support for the current syntax (where anchors are
485		"implicit") fade out in favor of the new, explicit syntax.
486		In order to be backward-compatible, both old and new syntax are
487		currently supported.
488
489		Again, see the CM manual for details.
490
491		3. Parallel make is trying to be slightly smarter:  When the master
492		process finds a "bottleneck", i.e., when there is only one
493		compilation unit that can be compiled and everybody else is
494		waiting on it, then it will simply compile it directly instead
495		of clumsily telling one of the slaves to do it.
496
497		4. Support for "unsharing" added.  This is necessary in order to be
498		able to have two different versions of the same library running
499		at the same time (e.g., for trying out a new MLRISC while still
500		having the old MLRISC linked into the current compiler, etc.)
501		See the CM manual.
502
503		5. Simple "makedepend" functionality added for generating Makefile
504		dependency information.  (This is rather crude at the moment.
505		Expect some changes here in the future.)
506
507		6. ".fun" added as a recognized suffix for ML files. Also documented
508		explicitly in the manual that the fallback behavior (unknown suffix
509		-> ML file) is not an official feature!
510
511		7. Small changes to the pickler for stable libraries.
512
513		8. Several internal changes to CM (for cleanup/improvement).
514
515
516		!!!! NEW BINFILES !!!!
517
518		----------------------------------------------------------------------
519		Name: Matthias Blume
520		Date: 2000/04/28 17:30:00 JST
521		Tag: blume-20000428-pathconfig
522		Description:
523
524		1. I changed config/install.sh to remove duplicate entries from the
525		lib/pathconfig file at the end.  Moreover, the final version of
526		lib/pathconfig is sorted alphabetically.  The same (sorting) is done
527		in src/system/installml.
528
529		2. The config/install.sh script now consistently uses relative
530		pathnames in lib/pathconfig whenever the anchor is in the lib
531		directory.  (So far this was true for the libraries that come
532		pre-compiled and bundled as part of the bootfiles but not for
533		libraries that are compiled by the script itself.)
534
535		----------------------------------------------------------------------
536		Name: Matthias Blume
537		Date: 2000/04/26 13:10:00 JST
538		Tag: blume-20000426-fun_suffix
539		Description:
540
541		Added ".fun" as a recognized file name suffix (for ML code).
542
543		----------------------------------------------------------------------
544		Name: Allen Leung
545		Date: 2000/04/25 17:00:00 EST
546		Tag: leunga-20000425-alpha-ra
547		Description:
548
549		1. Alpha
550
551		PSEUDOARITH was missing in AlphaRewrite.  This causes an endless loop
552		in C--.
553
554		2. RA
555
556		Added a flag "ra-dump-size" to print out the size of the flowgraph
557		and the interference graph.
558
559		----------------------------------------------------------------------
560		Name: Dave MacQueen
561		Date: 2000/04/25/
562		Tag: dbm-20000425-mlyacc_doc_examples
563		Description:
564		Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
565		Updated all three examples in src/ml-yacc/examples to run
566		under 110.* using CM.make.
567
568		----------------------------------------------------------------------
569		Name: Allen Leung
570		Date: 2000/04/20 23:04:00 EST
571		Tag: leunga-20000420-ssa-c---stuff
572		Description:
573
574		This update synchronizes my repository with Yale's.  Most of these
575		changes, however, do not affect SML/NJ at all (the RA is an exception).
576
577		1. Register Allocator
578
579		a. An improvement in the interference graph construction:
580		Given a copy
581
582		s <- t
583
584		no interference edge between s and t is added for this definition of s.
585
586		b. I've added two new spill heuristic modules that Fermin and I developed
587		(in the new library RA.cm). These are unused in SML/NJ but maybe
588		useful for others (Moby?)
589
590		2. X86
591
592		a. Various fixes in the backend provided by Fermin [C--] and Lal.
593
594		3. Alpha
595
596		a. Added the BSR instruction and code generation that goes with it [C--]
597		b. Other fixes too numerous to recount provided by Fermin [C--]
598
599		4. Regmaps
600
601		a. The regmaps are not initialized with the identity physical bindings
602		at creation time.  This is unneeded.
603
604		5. MLRISC Optimizations
605
606		a. The DJ-Graph module can now compute the iterated dominance frontiers
607		intersects with liveness incrementally in linear time! Woohoo!
608		This is now used in my new SSA construction algorithm.
609
610		b. THe branch reorganization module is now smarter about linear chains of
611		basic blocks.
612
613
614		----------------------------------------------------------------------
615		Name: Matthias Blume
616		Date: 2000/04/12 13:52:00 JST
617		Tag: blume_main_v110p27_1
618		Description:
619
620		Changed install.sh script to handle archive files without version number
621		and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
622		name of the boot file archive.
623
624		----------------------------------------------------------------------
625		Name: Dave MacQueen
626		Date: 2000/04/09 14:00 EDT
627		Tag: dbm-20000410-Version_110_27
628		Description:
629
630		1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
631
632		2. Updated src/config/version to 110.27
633
634		3. New boot files!
635
636		----------------------------------------------------------------------
637		Name: Allen Leung
638		Date: 2000/04/09 19:09:00 EST
639		Tag: leunga-20000409-misc
640		Description:
641
642		1.  Yet another fix for x86 assembly for idivl, imull, mull and friends.
643
644		2.  Miscellaneous improvements to MLRISC (unused in sml/nj)
645
646		----------------------------------------------------------------------
647		Name: Stefan
648		Date: 2000/04/07 10:00:00 EDT
649		Tag: monnier-20000406-branch-handling
650		Description:
651
652		Improved handling of branches (mostly those generated from
653		polymorphic equality), removed switchoff and changed the
654		default optimization settings (more cpsopt and less flintopt).
655
656		----------------------------------------------------------------------
657		Name: Allen Leung
658		Date: 2000/04/06 01:30:00 EST
659		Tag: leunga-20000406-peephole-x86-SSA-2
660		Description:
661
662		Forgot a few files.
663
664		----------------------------------------------------------------------
665		Name: Allen Leung
666		Date: 2000/04/06 00:36:00 EST
667		Tag: leunga-20000406-peephole-x86-SSA
668		Description:
669
670		1.  New Peephole code
671
672		2.  Minor improvement to X86 instruction selection
673
674		3.  Various fixes to SSA and machine description -> code translator
675
676		----------------------------------------------------------------------
677		Name: Matthias Blume
678		Date: 2000/04/05 12:30:00 JST
679		Tag: blume_main_v110p26p2_3
680		Description:
681
682		This update just merges three minor cosmetic updates to CM's sources
683		to get ready for the 110.27 code freeze on Friday.  No functionality
684		has changed.
685
686		----------------------------------------------------------------------
687	Name: Allen Leung	Name: Allen Leung
688	Date: 2000/04/04 19:39:00 EST	Date: 2000/04/04 19:39:00 EST
689	Tag: leunga-20000404-x86-asm	Tag: leunga-20000404-x86-asm
#	Line 57	Line 729
729
730	3.  Assembly	3.  Assembly
731
732	When generating assemby, resolve the value of client defined constants,	When generating assembly, resolve the value of client defined constants,
733	instead of generating symbolic values.  This is controlled by the	instead of generating symbolic values.  This is controlled by the
734	new flag "asm-resolve-constants", which is default to true.	new flag "asm-resolve-constants", which is default to true.
735
#	Line 80	Line 752
752
753	To this end, I arranged that instead of "structure Core" as "structure	To this end, I arranged that instead of "structure Core" as "structure
754	_Core" is bound in the pervasive environment.  Core access is done via	_Core" is bound in the pervasive environment.  Core access is done via
755	_Core (which can never be accidentially rebound because _Core is not a	_Core (which can never be accidentally rebound because _Core is not a
756	legal surface-syntax symbol).	legal surface-syntax symbol).
757
758	The current solution is much cleaner because the core environment is	The current solution is much cleaner because the core environment is
#	Line 90	Line 762
762	with dynamic and symbolic parts of the core environment.	with dynamic and symbolic parts of the core environment.
763
764	Remaining hackery (to bind the "magic" symbol _Core) is localized in the	Remaining hackery (to bind the "magic" symbol _Core) is localized in the
765	compilation mananger's bootstrap compiler (actually: in the "init group"	compilation manager's bootstrap compiler (actually: in the "init group"
766	handling).  See the comments in src/system/smlnj/init/init.cmi for	handling).  See the comments in src/system/smlnj/init/init.cmi for
767	more details.	more details.
768
#	Line 205	Line 877
877	(specified in the .cm file at each instance where the tool's class is	(specified in the .cm file at each instance where the tool's class is
878	used).	used).
879
880	This was done to accomodate the new "make" and "shell" tools which	This was done to accommodate the new "make" and "shell" tools which
881	facilitate fairly seemless hookup to portions of code managed using	facilitate fairly seamless hookup to portions of code managed using
882	Makefiles or Shell scripts.	Makefiles or Shell scripts.
883
884	There are no classes "shared" or "private" anymore.  Instead, the	There are no classes "shared" or "private" anymore.  Instead, the
#	Line 218	Line 890
890
891	All existing tools are described in the CM manual.	All existing tools are described in the CM manual.
892
893	- Slightly better error handling.  (CM now surpresses many followup	- Slightly better error handling.  (CM now suppresses many followup
894	error messages that tended to be more annoying than helpful.)	error messages that tended to be more annoying than helpful.)
895
896	2. Major changes to the compiler's static environment data structures.	2. Major changes to the compiler's static environment data structures.
#	Line 352	Line 1024
1024
1025	I've changed andl to testl in the floating point test sequence	I've changed andl to testl in the floating point test sequence
1026	whenever appropriate.  The Intel optimization guide states that	whenever appropriate.  The Intel optimization guide states that
1027	testl is perferable to andl.	testl is preferable to andl.
1028
1029	7. RA (x86 only)	7. RA (x86 only)
1030
#	Line 534	Line 1206
1206
1207	1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an	1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
1208	additional argument called "template" which is an optional string that	additional argument called "template" which is an optional string that
1209	specifiel the layout of the tool command line.  See the CM manual for	specifies the layout of the tool command line.  See the CM manual for
1210	explanation.	explanation.
1211
1212	2. A special-purpose tool can be "regisitered" by simply dropping the	2. A special-purpose tool can be "registered" by simply dropping the
1213	corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same	corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
1214	directory where the .cm file lives that uses this tool.  (The	directory where the .cm file lives that uses this tool.  (The
1215	behavior/misfeature until now was to look for the tool description	behavior/misfeature until now was to look for the tool description
#	Line 581	Line 1253
1253	rebuild.  Having sets of the form <base><k>.{bin,boot}.<arch>-unix for	rebuild.  Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
1254	<k>=1,2,... is normally not a good idea when invoking fixpt.  However,	<k>=1,2,... is normally not a good idea when invoking fixpt.  However,
1255	they might be the result of an earlier partial run of fixpt (which	they might be the result of an earlier partial run of fixpt (which
1256	perhaps got accidentially killed).  In this case, fixpt will quickly	perhaps got accidentally killed).  In this case, fixpt will quickly
1257	move through what exists before continuing where it left off earlier,	move through what exists before continuing where it left off earlier,
1258	and, thus, saves a lot of time.	and, thus, saves a lot of time.
1259
#	Line 631	Line 1303
1303	it from that remote directory.	it from that remote directory.
1304	This should simplify installation further:  For machines that have	This should simplify installation further:  For machines that have
1305	access to the internet, just fetch <version>-config.tgz, unpack it,	access to the internet, just fetch <version>-config.tgz, unpack it,
1306	edit config/targets, and go (run config/install.sh).  The scipt will	edit config/targets, and go (run config/install.sh).  The script will
1307	fetch everything else that it might need all by itself.	fetch everything else that it might need all by itself.
1308
1309	For CVS users, this mechanism is not relevant for source archives, but	For CVS users, this mechanism is not relevant for source archives, but

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