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1 :	dbm	570	This is the HISTORY file for the Yale SML/NJ CVS repository.
2 :
3 :			An entry should be made for _every_ commit to the repository.
4 :			The entries in this file will be used when creating the README
5 :			for new versions, so keep that in mind when writing the
6 :			description.
7 :
8 :			The form of an entry should be:
9 :
10 :			Name:
11 :			Date:
12 :			Tag: <post-commit CVS tag>
13 :			Description:
14 :	george	749	----------------------------------------------------------------------
15 :	leunga	775	Name: Allen Leung
16 :			Date: Thu Jan 11 21:03:00 EST 2001
17 :			Tag: leunga-20010111-labexp=mltree
18 :			Description:
19 :
20 :			1. Removed the type LabelExp and replace it by MLTree.
21 :			2. Rewritten mltree-simplify with the pattern matcher tool.
22 :			3. There were some bugs in alpha code generator which would break
23 :			64-bit code generation.
24 :			4. Redo the tools to generate code with the
25 :			5. The CM files in MLRISC (and in src/system/smlnj/MLRISC)
26 :			are now generated by perl scripts.
27 :
28 :			----------------------------------------------------------------------
29 :	blume	771	Name: Matthias Blume
30 :	blume	774	Date: 2001/01/10 21:55:00 JST
31 :			Tag: blume-20010110-rcc
32 :			Description:
33 :
34 :			The RCC stuff now seems to work (but only on the x86).
35 :			This required hacking of the c-calls interface (and -implementation) in
36 :			MLRISC.
37 :
38 :			Normal compiler users should be unaffected.
39 :
40 :			----------------------------------------------------------------------
41 :			Name: Matthias Blume
42 :	blume	773	Date: 2001/01/09 01:20:00 JST
43 :			Tag: blume-20010109-rcc
44 :			Description:
45 :
46 :			This is a fairly big patch, flushing out a large number of pending
47 :			changes that I made to my development copy over the last couple of days.
48 :
49 :			Of practical relevance at this moment is a workaround for a pickling
50 :			bug that Allen ran into the other day. The cause of the bug itself is
51 :			still unknown and it might be hard to fix it properly, but the
52 :			workaround has some merits of its own (namely somewhat reducing pickling
53 :			overhead for certain libraries). Therefore, I think this solution should
54 :			be satisfactory at this time.
55 :
56 :			The rest of the changes (i.e., the vast majority) has to do with my
57 :			ongoing efforts of providing direct support for C function calls from
58 :			ML. At the moment there is a new primop "RAW_CCALL", typing magic
59 :			in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
60 :			case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
61 :			translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
62 :			handle RCC.
63 :
64 :			The last part (the changes to mlriscGen.sml) are still known to be
65 :			wrong on the x86 and not implemented on all other architectures. But
66 :			the infrastructure is in place. I had to change a few functor
67 :			signatures in the backend to be able to route the CCalls interface
68 :			from MLRISC there, and I had to specialize the mltree type (on the
69 :			x86) to include the necessary extensions. (The extensions themselves
70 :			were already there and redy to go in MLRISC/x86).
71 :
72 :			Everything should be very happy as soon as someone helps me with
73 :			mlriscGen.sml...
74 :
75 :			In any case, nothing of this should matter to anyone as long as the
76 :			new primop is not being used (which is going to be the case unless you
77 :			find it where I hid it :). The rest of the compiler is completely
78 :			unaffected.
79 :
80 :			----------------------------------------------------------------------
81 :			Name: Matthias Blume
82 :	blume	772	Date: 2001/01/05 00:30:00 JST
83 :			Tag: blume-20010105-primops
84 :			Description:
85 :
86 :			Added some experimental support for work that I am doing right now.
87 :			These changes mostly concern added primops, but there is also a new
88 :			experimental C library in the runtime system (but currently not enabled
89 :			anywhere except on Linux/X86).
90 :
91 :			In the course of adding primops (and playing with them), I discovered that
92 :			Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
93 :			broken. (Zhong was very right he labeled this stuff as "major gross hack".)
94 :			To recover, I made type information in INL_PRIM mandatory and changed
95 :			prim.sml as well as built-in.sml accordingly. The InLine structure now
96 :			has complete, correct type information (i.e., no bottom types).
97 :
98 :			Since all these changes mean that we need new binfiles, I also bumped the
99 :			version number to 110.32.1.
100 :
101 :			----------------------------------------------------------------------
102 :			Name: Matthias Blume
103 :	blume	771	Date: 2000/12/30 22:10:00 JST
104 :			Tag: blume-20001230-various
105 :			Description:
106 :
107 :			Added proxy libraries for MLRISC and let MLRISC libraries refer
108 :			to each other using path anchors. (See CM manual for explanation.)
109 :
110 :			Updated CM documentation.
111 :
112 :			Fixed some bugs in CM.
113 :
114 :			Implemented "proxy" libraries (= syntactic sugar for CM).
115 :
116 :			Added "-quiet" option to makeml and changed runtime system accordingly.
117 :
118 :			Added cleanup handler for exportML to reset timers and compiler stats.
119 :
120 :			----------------------------------------------------------------------
121 :	george	761	Name: Lal George
122 :			Date: 2000/12/22 22:22:58 EST 2000
123 :			Tag: Release_110_32
124 :			Description:
125 :
126 :			Infinite precision used throughout MLRISC.
127 :			see MLRISC/mltree/machine-int.sig
128 :
129 :			----------------------------------------------------------------------
130 :	blume	756	Name: Matthias Blume
131 :	blume	760	Date: 2000/12/22 23:16:00 JST
132 :			Tag: blume-20001222-warn
133 :			Description:
134 :	blume	759
135 :	blume	760	Corrected wording and formatting of some CM warning message which I
136 :			broke in my previous patch.
137 :	blume	759
138 :			----------------------------------------------------------------------
139 :			Name: Matthias Blume
140 :	blume	763	Date: 2000/12/22 21:20:00 JST
141 :			Tag: blume-20001222-anchorenv
142 :			Description:
143 :
144 :			Fixed CM's handling of anchor environments in connection with CMB.make.
145 :
146 :			----------------------------------------------------------------------
147 :			Name: Matthias Blume
148 :	blume	758	Date: 2000/12/22 13:15:00 JST
149 :			Tag: blume-20001222-cleanup
150 :			Description:
151 :
152 :			Removed src/cm/ffi which does not (and did not) belong here.
153 :
154 :			----------------------------------------------------------------------
155 :			Name: Matthias Blume
156 :	blume	757	Date: 2000/12/21 23:55:00 JST
157 :			Tag: blume-20001221-exn
158 :			Description:
159 :
160 :			Probably most important: CM no longer silently swallows all exceptions
161 :			in the compiler.
162 :			Plus: some other minor CM changes. For example, CM now reports some
163 :			sizes for generated binfiles (code, data, envpickle, lambdapickle).
164 :
165 :			----------------------------------------------------------------------
166 :			Name: Matthias Blume
167 :	blume	756	Date: 2000/12/15 00:01:05 JST
168 :			Tag: blume-20001215-dirtool
169 :			Description:
170 :
171 :			- "dir" tool added.
172 :			- improvements and cleanup to Tools structure
173 :			- documentation updates
174 :
175 :			----------------------------------------------------------------------
176 :	leunga	752	Name: Allen Leung
177 :	leunga	755	Date: Thu Dec 14 03:45:24 EST 2000
178 :			Description:
179 :			Tag: leunga-20001214-int-inf
180 :			Description:
181 :
182 :			In IntInf, added these standard functions, which are missing from our
183 :			implementation:
184 :
185 :			andb : int * int -> int
186 :			xorb : int * int -> int
187 :			orb : int * int -> int
188 :			notb : int -> int
189 :			<< : int * word -> int
190 :			~>> : int * word -> int
191 :
192 :			Not tested, I hope they are correct.
193 :
194 :			----------------------------------------------------------------------
195 :			Name: Allen Leung
196 :	leunga	752	Date: Fri Dec 8 19:23:26 EST 2000
197 :			Description:
198 :			Tag: leunga-20001208-nowhere
199 :			Description:
200 :
201 :			Slight improvements to the 'nowhere' tool to handle OR-patterns,
202 :			to generate better error messages etc. Plus a brief manual.
203 :
204 :			----------------------------------------------------------------------
205 :	george	749	Name: Lal George
206 :			Date: 2000/12/08 09:54:02 EST 2000
207 :			Tag: Release_110_31
208 :			Description:
209 :	george	705
210 :	george	749	- Version 110.31
211 :	leunga	591	----------------------------------------------------------------------
212 :	leunga	744	Name: Allen Leung
213 :			Date: Thu Dec 7 22:01:04 EST 2000
214 :			Tag: leunga-20001207-cell-monster-hack
215 :			Description:
216 :
217 :			Major MLRISC internal changes. Affect all clients.
218 :			Summary:
219 :
220 :			1. Type CELLS.cell = int is now replaced by a datatype.
221 :			As a result, the old regmap is now gone. Almost all interfaces
222 :			in MLRISC change as a consequence.
223 :
224 :			2. A new brand version of machine description tool (v3.0) that generates
225 :			modules expecting the new interface. The old version is removed.
226 :
227 :			3. The RA interface has been further abstracted into two new functors.
228 :			RISC_RA and X86RA. These functors have much simpler interfaces.
229 :			[See also directory MLRISC/demo.]
230 :
231 :			4. Some other new source->source code generation tools are available:
232 :
233 :			a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
234 :			b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
235 :			I use this tool to generate the peephole optimizers---with the new
236 :			cell type changes, peephole rules are becoming difficult to write
237 :			without conditional pattern matching.
238 :
239 :			5. More Intmap -> IntHashTable change. Previous changes by Matthias didn't
240 :			cover the entire MLRISC source tree so many things broke.
241 :
242 :			6. CM files have been moved to the subdirectory MLRISC/cm.
243 :			They are moved because there are a lot of them and they clutter up the
244 :			root dir.
245 :
246 :			7. More detailed documentation to come...
247 :
248 :			NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
249 :			a makeml -rebuild first. This is because of other other
250 :			changes that Matthias has made (see below).
251 :
252 :
253 :			----------------------------------------------------------------------
254 :	blume	733	Name: Matthias Blume
255 :	blume	742	Date: 2000/11/30 23:12:00 JST
256 :			Tag: blume-20001130-filereorg
257 :			Description:
258 :
259 :			Some manual updates and some file reorganizations in CM.
260 :
261 :			----------------------------------------------------------------------
262 :			Name: Matthias Blume
263 :	blume	737	Date: 2000/11/24 17:45:00 JST
264 :			Tag: blume-20001124-link
265 :			Description:
266 :
267 :			Drastically improved link traversal code for the case that the dynamic
268 :			value was already loaded at bootstrap time. As a result, CM and CMB
269 :			now both load blazingly fast -- even on a very slow machine. Also,
270 :			memory consumption has been further reduced by this.
271 :
272 :			Warning: The format of the PIDMAP file has changed. THerefore, to
273 :			bootstrap you have to do this:
274 :
275 :			1. Run CMB.make
276 :			2. Make a symbolic link for the boot directory:
277 :			ln -s sml.boot.ARCH-OS xxx
278 :			3. "Rebuild" the boot directory:
279 :			./makeml -boot xxx -rebuild sml ; rm xxx
280 :			4. Boot normally:
281 :			./makeml
282 :
283 :			----------------------------------------------------------------------
284 :			Name: Matthias Blume
285 :	blume	735	Date: 2000/11/21 21:20:00 JST
286 :			Tag: blume-20001121-tools
287 :			Description:
288 :
289 :			Continued hacking on autoloading problem -- with success this time.
290 :			Also changed tool-plugin mechanism. See new CM manual.
291 :
292 :			----------------------------------------------------------------------
293 :			Name: Matthias Blume
294 :	blume	734	Date: 2000/11/19 14:30:00 JST
295 :			Tag: blume-20001119-autoload
296 :			Description:
297 :
298 :			Some hacking to make autoloading faster. Success for CMB, no success
299 :			so far for CM. There is a reduced structure CM' that autoloads faster.
300 :			(This is a temporary, non-documented hack to be eliminated again when
301 :			the general problem is solved.)
302 :
303 :			----------------------------------------------------------------------
304 :			Name: Matthias Blume
305 :	blume	733	Date: 2000/11/17 14:10:00 JST
306 :			Tag: blume-20001117-pickle-lib
307 :			Description:
308 :
309 :			1. Eliminated comp-lib.cm
310 :			2. Made pickle-lib.cm
311 :			3. Eliminated all uses of intset.sml (from comp-lib.cm)
312 :			4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
313 :			equivalent constructs from smlnj-lib.cm (INtHashTable).
314 :			5. Point 4. also goes for those uses of intmap.* in MLRISC.
315 :			Duplicated intmap modules thrown out.
316 :			6. Hunted down all duplicated SCC code and replaced it with
317 :			equivalent stuff (GraphSCCFn from smlnj-lib.cm).
318 :			7. Rewrote Feedback module.
319 :			8. Moved sortedlist.sml into viscomp-lib.cm. Eventually it
320 :			should be thrown out and equivalent modules from smlnj-lib.cm
321 :			should be used (IntRedBlackSet, IntListSet, ...).
322 :
323 :			Confirmed that compiler compiles to fixpoint.
324 :
325 :			----------------------------------------------------------------------
326 :	leunga	731	Name: Allen Leung
327 :			Date: 2000/11/10 18:00:00
328 :			Tag: leunga-20001110-new-x86-fp
329 :
330 :			A new x86 floating point code generator has been added.
331 :			By default this is turned off. To turn this on, do:
332 :
333 :			CM.autoload "$smlnj/compiler.cm";
334 :			Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
335 :
336 :			Changes:
337 :
338 :			1. Changed FTAN to FPTAN so that the assembly output is correct.
339 :			2. Changed the extension callback for FTANGENT to generate:
340 :
341 :			fptan
342 :			fstp %st(0)
343 :			instead of
344 :			fptan
345 :			fstpl ftempmem
346 :
347 :			3. Numerous assembly fixes for x86.
348 :
349 :			5. Cleaned up the machine code output module x86/x86MC.sml and added
350 :			support for a whole bunch of instructions and addressing modes:
351 :
352 :			fadd/fsub/fsubr/fmul/fdiv/fdivr %st, %st(n)
353 :			faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp %st, %st(n)
354 :			fadd/fsub/fsubr/fmul/fdiv/fdivr %st(n), %st
355 :			fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
356 :			fxch %st(n)
357 :			fld %st(n)
358 :			fst %st(n)
359 :			fst mem
360 :			fstp %st(n)
361 :			fucom %st(n)
362 :			fucomp %st(n)
363 :
364 :			All these are now generated when the fast fp mode is turned on.
365 :
366 :			6. Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
367 :
368 :			----------------------------------------------------------------------
369 :	blume	729	Name: Matthias Blume
370 :			Date: 2000/11/09 11:20:00 JST
371 :			Tag: blume-20001109-scc
372 :			Description:
373 :
374 :			Eliminated some code duplication:
375 :
376 :			1. Added "where" clause to GraphSCCFn in SML/NJ Library.
377 :			(Otherwise the functor is useless.)
378 :			2. Used GraphSCCFn where SCCUtilFun was used previously.
379 :			3. Got rid of SCCUtilFun (in comp-lib.cm).
380 :
381 :			----------------------------------------------------------------------
382 :	george	721	Name: Lal George
383 :			Date: 2000/11/06 09:02:21 EST 2000
384 :			Tag: Release_110_30
385 :			Description:
386 :
387 :			- Version 110.30
388 :			----------------------------------------------------------------------
389 :	blume	715	Name: Matthias Blume
390 :	blume	716	Date: 2000/11/04 14:45:00
391 :			Tag: blume-20001104-mlbuild
392 :			Description:
393 :
394 :			- Made ml-build faster on startup.
395 :			- Documentation fixes.
396 :
397 :			----------------------------------------------------------------------
398 :			Name: Matthias Blume
399 :	blume	715	Date: 2000/11/02 17:00:00 JST
400 :			Tag: blume-20001102-condcomp
401 :			Description:
402 :
403 :			- Small tweaks to pickler -- new BOOTFILES!
404 :			- Version bumped to 110.29.2.
405 :			- Added conditional compilation facility to init.cmi (see comment there).
406 :			----------------------------------------------------------------------
407 :	leunga	713	Name: Allen Leung
408 :			Date: 2000/10/23 19:31:00
409 :			Tag: leunga-20001023-demo-ra
410 :
411 :			1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
412 :			2. Test programs for the graph library updated
413 :			3. Some new MLRISC demo programs added
414 :
415 :			----------------------------------------------------------------------
416 :	blume	710	Name: Matthias Blume
417 :	blume	711	Date: 2000/08/31 22:15:00 JST
418 :			Tag: blume-20001017-errmsg
419 :			Description:
420 :
421 :			More error message grief: Where there used to be no messages, there
422 :			now were some that had bogus error regions. Fixed.
423 :
424 :			----------------------------------------------------------------------
425 :			Name: Matthias Blume
426 :	blume	710	Date: 2000/08/31 17:30:00 JST
427 :			Tag: blume-20001017-v110p29p1
428 :			Description:
429 :
430 :			I made a version 110.29.1 with new bootfiles.
431 :
432 :			Changes: Modified pickler/unpickler for faster and leaner unpickling.
433 :			CM documentation changes and a small bugfix in CM's error reporting.
434 :
435 :			----------------------------------------------------------------------
436 :	george	705	Name: Lal George
437 :			Date: 2000/09/27 14:42:35 EDT
438 :			Tag: george-20000927-nodestatus
439 :			Description:
440 :
441 :			Changed the type of the nodestatus, so that:
442 :
443 :			SPILLED(~1) is now SPILLED
444 :			SPILLED(m) where m>=0 is now MEMREG(m)
445 :			SPILLED(s) where s<~1 is now SPILL_LOC(~s)
446 :
447 :			----------------------------------------------------------------------
448 :	blume	697	Name: Matthias Blume
449 :	blume	703	Date: 2000/09/07 14:45:00 JST
450 :			Tag: blume-20000907-cmerrmsg
451 :			Description:
452 :
453 :			Small tweak to CM to avoid getting ML syntax error messages twice.
454 :
455 :			----------------------------------------------------------------------
456 :			Name: Matthias Blume
457 :	blume	701	Date: 2000/08/31 18:00:00 JST
458 :			Tag: blume-20000831-cvsbootfiles
459 :			Description:
460 :
461 :			New URL for boot files (because the 110.29 files on the BL server do
462 :			now work correctly with my updated install scripts for yacc and lex).
463 :
464 :			----------------------------------------------------------------------
465 :			Name: Matthias Blume
466 :	blume	697	Date: 2000/08/08 12:33:00 JST
467 :			Tag: blume-20000808-manual
468 :			Description:
469 :
470 :			Tiny update to CM manual.
471 :
472 :			----------------------------------------------------------------------
473 :	leunga	695	Name: Allen Leung
474 :			Date: 2000/08/7 19:31:00
475 :			Tag: leunga-20000807-a-whole-bunch-of-stuff
476 :
477 :			Moby, C--, SSA, x86, machine descriptions etc. Should only affect C--
478 :			and Mobdy.
479 :
480 :			1. x86
481 :
482 :			a. Fixes to peephole module by John and Dan.
483 :			b. Assembly fix to SETcc by Allen.
484 :			c. Fix to c-call by John.
485 :			d. Fix to spilling by John. (This one deals with the missing FSTPT case)
486 :			e. Instruction selection optimization to SETcc as suggested by John.
487 :
488 :			For example,
489 :
490 :			MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
491 :
492 :			should generate:
493 :
494 :			MOVL a, x
495 :			SUBL b, x
496 :			SHRL 31, x
497 :
498 :			2. IR stuff
499 :
500 :			A bunch of new DJ-graph related algorithms added. These
501 :			speed up SSA construction.
502 :
503 :			3. SSA + Scheduling
504 :
505 :			Added code for SSA and scheduling to the repository
506 :
507 :			----------------------------------------------------------------------
508 :	george	694	Name: Lal George
509 :			Date: 2000/07/27 11:53:14 EDT
510 :
511 :			Tag: lal-20000727-linux-ppc
512 :			Description:
513 :
514 :			Made changes to support Linux PPC.
515 :			p.s. I have confirmation that the 110.29 boot files work fine.
516 :
517 :			----------------------------------------------------------------------
518 :	blume	684	Name: Matthias Blume
519 :	blume	692	Date: 2000/07/27 17:40:00 JST
520 :			Tag: blume-20000727-scripts
521 :			Description:
522 :
523 :			!!!! WARNING !!!!
524 :			You must recompile the runtime system!
525 :			!!!! WARNING !!!!
526 :
527 :			This is basically another round of script-enhancements:
528 :
529 :			1. sml, ml-build, and ml-makedepend accept options -D and -U to define
530 :			and undefine CM preprocessor symbols.
531 :
532 :			2. ml-build avoids generating a new heap image if it finds that the
533 :			existing one is still ok. (The condition is that no ML file had to
534 :			be recompiled and all ML files are found to be older that the heap
535 :			file.)
536 :
537 :			To make this work smoothly, I also hacked the runtime system as
538 :			well as SMLofNJ.SysInfo to get access to the heap image suffix
539 :			(.sparc-solaris, ...) that is currently being used.
540 :
541 :			Moreover, the signature of CM.mk_standalone has changed. See the
542 :			CM manual.
543 :
544 :			3. ml-makedepend accepts additional options -n, -a, and -o. (See the
545 :			CM manual for details.)
546 :
547 :			4. More CM manual updates:
548 :			- all of the above has been documented.
549 :			- there is now a section describing the (CM-related) command line
550 :			arguments that are accepted by the "sml" command
551 :
552 :			----------------------------------------------------------------------
553 :			Name: Matthias Blume
554 :	blume	691	Date: 2000/07/25 16:20:00 JST
555 :			Tag: blume-20000725-makedepend
556 :			Description:
557 :
558 :			Added a script called ml-makedepend. This can be used in makefiles
559 :			for Unix' make in a way very similar to the "makedepend" command for
560 :			C.
561 :
562 :			The script internally uses function CM.sources.
563 :
564 :			Synopsis:
565 :
566 :			ml-makedepend [-f makefile] cmfile targetname
567 :
568 :			The default for the makefile is "makefile" (or "Makefile" should
569 :			"makefile" not exist).
570 :
571 :			ml-makedepend adds a cmfile/targetname-specific section to this
572 :			makefile (after removing the previous version of this section). The
573 :			section contains a single dependency specification with targetname on
574 :			the LHS (targetname is an arbitrary name), and a list of files derived
575 :			from the cmfile on the RHS. Some of the files on the RHS are
576 :			ARCH/OPSYS-specific. Therefore, ml-makedepend inserts references to
577 :			"make" variables $(ARCH) and $(OPSYS) in place of the corresponding
578 :			path names. The makefile writer is responsible for making sure that
579 :			these variables have correct at the time "make" is invoked.
580 :
581 :			----------------------------------------------------------------------
582 :			Name: Matthias Blume
583 :	blume	690	Date: 2000/07/22 23:30:00 JST
584 :			Tag: blume-20000722-urlupdate
585 :			Description:
586 :
587 :			Changed BOOT and config/srcarchiveurl to point to BL server:
588 :
589 :			ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
590 :
591 :			----------------------------------------------------------------------
592 :			Name: Matthias Blume
593 :	blume	686	Date: 2000/07/18 18:00:00 JST
594 :			Tag: blume-20000718-Version_110_29
595 :			Description:
596 :
597 :			1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
598 :
599 :			2. Updated config/version to 110.29
600 :
601 :			3. Updated config/srcarchiveurl
602 :
603 :			3. New boot files!
604 :			ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
605 :
606 :			----------------------------------------------------------------------
607 :			Name: Matthias Blume
608 :	blume	684	Date: 2000/07/11 13:58:00 JST
609 :			Tag: blume-20000711-doctypo
610 :			Description:
611 :
612 :			Fixed a few typos in CM manual.
613 :
614 :			----------------------------------------------------------------------
615 :	leunga	683	Name: Allen Leung
616 :			Date: 2000/06/15 00:38:00
617 :			Tag: leunga-20000704-sparc-x86
618 :
619 :			1. x86 peephole improvement sp += k; sp -= k => nop [from John]
620 :			2. fix to x86 RET bug [found by Dan Grossman]
621 :			3. sparc assembly bug fix for ticc instructions [found by Fermin]
622 :
623 :			Affects c-- and moby only
624 :
625 :			----------------------------------------------------------------------
626 :	blume	680	Name: Matthias Blume
627 :	blume	682	Date: 2000/07/04 15:26:00
628 :			Tag: blume-20000704-trigger
629 :			Description:
630 :
631 :			1. Improvements to CM manual.
632 :			2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
633 :			of getting a back-trace. The function, when called, raises an
634 :			internal exception which explicitly carries the full back-trace history,
635 :			so it is unaffected by any intervening handle-raise pairs ("trivial"
636 :			or not). The interactive loop will print that history once it arrives
637 :			at top level.
638 :			Short of having all exceptions implicitly carry the full history, the
639 :			recommended way of using this facility is:
640 :			- compile your program with instrumentation "on"
641 :			- run it, when it raises an exception, look at the history
642 :			- if the history is "cut off" because of some handler, go and modify
643 :			your program so that it explicitly calls BTrace.trigger
644 :			- recompile (still instrumented), and rerun; look at the full history
645 :
646 :			----------------------------------------------------------------------
647 :			Name: Matthias Blume
648 :			Date: 2000/07/03 15:36:00 JST
649 :	blume	680	Tag: blume-20000702-manual
650 :			Description:
651 :
652 :			Small corrections and updates to CM manual.
653 :
654 :			----------------------------------------------------------------------
655 :	blume	682	Name: Matthias Blume
656 :	blume	679	Date: 2000/06/29 16:04:00 JST
657 :			Tag: blume-20000629-yacctool
658 :			Description:
659 :
660 :			Changes:
661 :
662 :			1. Class "mlyacc" now takes separate arguments to pass options to
663 :			generated .sml- and .sig-files independently.
664 :			2. Corresponding CM manual updates.
665 :			3. BTrace module now also reports call sites. (However, for loop clusters
666 :			it only shows from where the cluster was entered.) There are associated
667 :			modifications to core.sml, internals.{sig,sml}, btrace.sml, and btimp.sml.
668 :
669 :			----------------------------------------------------------------------
670 :	blume	675	Name: Matthias Blume
671 :	blume	678	Date: 2000/06/27 16:51:00 JST
672 :			Tag: blume-20000627-noweb
673 :			Description:
674 :
675 :			Changes:
676 :
677 :			1. Implemented "subdir" and "witness" options for noweb tool.
678 :			This caused some slight internal changes in CM's tool implementation.
679 :			2. Fixed bug in "tool plugin" mechanism. This is essentially cleaning
680 :			some remaining issues from earlier path anchor changes.
681 :			3. Updated CM manual accordingly.
682 :
683 :			4. Changed implementation of back-tracing so that I now consider it
684 :			ready for prime-time.
685 :
686 :			In particular, you don't have to explicitly trigger the back-trace
687 :			anymore. Instead, if you are running BTrace-instrumented code and
688 :			there is an uncaught exception (regardless of whether or not it was
689 :			raised in instrumented code), the top-level evalloop will print
690 :			the back-trace.
691 :
692 :			Features:
693 :
694 :			- Instrumented and uninstrumented code work together seemlessly.
695 :			(Of course, uninstrumented code is never mentioned in actual
696 :			back-traces.)
697 :
698 :			- Asymptotic time- and space-complexity of instrumented code is
699 :			equal to that of uninstrumented code. (This means that
700 :			tail-recursion is preserved by the instrumentation phase.)
701 :
702 :			- Modules whose code has been instrumented in different sessions
703 :			work together without problem.
704 :
705 :			- There is no penalty whatsoever on uninstrumented code.
706 :
707 :			- There is no penalty on "raise" expressions, even in
708 :			instrumented code.
709 :
710 :			A potential bug (or perhaps it is a feature, too):
711 :
712 :			A back-trace reaches no further than the outermost instrumented
713 :			non-trivial "raise". Here, a "trivial" raise is one that is the
714 :			sole RHS of a "handle" rule. Thus, back-traces reach trough
715 :
716 :			<exp> handle e => raise e
717 :
718 :			and even
719 :
720 :			<exp> handle Foo => raise Bar
721 :
722 :			and, of course, through
723 :
724 :			<exp> handle Foo => ...
725 :
726 :			if the exception was not Foo.
727 :
728 :			Back-traces always reach right through any un-instrumented code
729 :			including any of its "handle" expressions, trivial or not.
730 :
731 :			To try this out, do the following:
732 :
733 :			- Erase all existing binfiles for your program.
734 :			(You may keep binfiles for those modules where you think you
735 :			definitely don't need back-tracing.)
736 :			- Turn on back-trace instrumentation:
737 :			SMLofNJ.Internals.BTrace.mode (SOME true);
738 :			- Recompile your program. (I.e., run "CM.make" or "use".)
739 :			- You may now turn instrumentation off again (if you want):
740 :			SMLofNJ.Internals.BTrace.mode (SOME false);
741 :			- Run your program as usual. If it raises an exception that
742 :			reaches the interactive toplevel, then a back-trace will
743 :			automatically be printed. After that, the toplevel loop
744 :			will print the exception history as usual.
745 :
746 :			----------------------------------------------------------------------
747 :			Name: Matthias Blume
748 :	blume	677	Date: 2000/06/26 09:56:46 JST
749 :			Tag: blume-20000626-setup
750 :			Description:
751 :
752 :			CM: - setup-parameter to "sml" added; this can be used to run arbitrary
753 :			ML code before and after compiling a file (e.g., to set compiler
754 :			flags)
755 :
756 :			Compiler: - improved btrace API (in core.sml, internals.{sig,sml})
757 :			- associated changes to btrace.sml (BTrace instrumentation pass)
758 :			- cleaner implementation of btimp.sml (BTrace tracing and report
759 :			module)
760 :
761 :			CM manual: * new path encoding documented
762 :			* description of setup-parameter to "sml" added
763 :
764 :			The biggest user-visible change to back-tracing is that it is no
765 :			longer necessary to compile all traced modules within the same
766 :			session. (This was a real limitation.)
767 :
768 :			----------------------------------------------------------------------
769 :			Name: Matthias Blume
770 :	blume	676	Date: 2000/06/24 12:40:00 JST
771 :			Tag: blume-20000624-startup
772 :			Description:
773 :
774 :			Fixes startup slowdown problem. (I was calling SrcPath.sync a _tad_
775 :			bit too often -- to put it mildly. :)
776 :
777 :			----------------------------------------------------------------------
778 :			Name: Matthias Blume
779 :	blume	675	Date: 2000/06/23 18:20:00 JST
780 :			Tag: blume-20000623-btrace
781 :			Description:
782 :
783 :			This updates adds a backtrace facility to aid programmers in debugging
784 :			their programs. This involves the following changes:
785 :
786 :			1. Module system/smlnj/init/core.sml (structure _Core) now has hooks for
787 :			keeping track of the current call stack. When programs are compiled
788 :			in a special mode, the compiler will insert calls to these hooks
789 :			into the user program.
790 :			"Hook" means that it is possible for different implementations of
791 :			back-tracing to register themselves (at different times).
792 :
793 :			2. compiler/MiscUtil/profile/btrace.sml implements the annotation phase
794 :			as an Absyn.dec->Absyn.dec rewrite. Normally this phase is turned off.
795 :			It can be turned on using this call:
796 :			SMLofNJ.Internals.BTrace.mode (SOME true);
797 :			Turning it off again:
798 :			SMLofNJ.Internals.BTrace.mode (SOME false);
799 :			Querying the current status:
800 :			SMLofNJ.Internals.BTrace.mode NONE;
801 :			Annotated programs are about twice as big as normal ones, and they
802 :			run a factor of 2 to 4 slower with a dummy back-trace plugin (one
803 :			where all hooks do nothing). The slowdown with a plugin that is
804 :			actually useful (such as the one supplied by default) is even greater,
805 :			but in the case of the default plugin it is still only an constant
806 :			factor (amortized).
807 :
808 :			3. system/Basis/Implementation/NJ/internals.{sig,sml} have been augmented
809 :			with a sub-structure BTrace for controlling back-tracing. In particular,
810 :			the above-mentioned function "mode" controls whether the annotation
811 :			phase is invoked by the compiler. Another important function is
812 :			"trigger": when called it aborts the current execution and causes
813 :			the top-level loop to print a full back-trace.
814 :
815 :			4. compiler/MiscUtil/profile/btimp.sml is the current default plugin
816 :			for back-tracing. It keeps track of the dynamic call stack and in
817 :			addition to that it keeps a partial history at each "level" of that
818 :			stack. For example, if a tail-calls b, b tail-calls c, and c tail-calls
819 :			d and b (at separate times, dynamically), then the report will show:
820 :
821 :			GOTO d
822 :			/c
823 :			GOTO \b
824 :			CALL a
825 :
826 :			This shows that there was an initial non-tail call of a, then a
827 :			tail-call to b or c, looping behavior in a cluster of functions that
828 :			consist of b and c, and then a goto from that cluster (i.e., either from
829 :			b or from c) to d.
830 :
831 :			Note that (depending on the user program) the amount of information
832 :			that the back-trace module has to keep track of at each level is bounded
833 :			by a constant. Thus, the whole implementation has the same asymptotical
834 :			complexity as the original program (both in space and in time).
835 :
836 :			5. compiler/TopLevel/interact/evalloop.sml has been modified to
837 :			handle the special exception SMLofNJ.Internals.BTrace.BTrace
838 :			which is raised by the "trigger" function mentioned above.
839 :
840 :			Notes on usage:
841 :
842 :			- Annotated code works well together with unannotated code:
843 :			Unannotated calls simply do not show up at all in the backtrace.
844 :
845 :			- It is not a good idea to let modules that were annotated during
846 :			different sessions run at the same time. This is because the compiler
847 :			chooses small integers to identify individual functions, and there
848 :			will be clashes if different modules were compiled in separate sessions.
849 :			(Nothing will crash, and you will even be told about the clashes, but
850 :			back-trace information will in general not be useful.)
851 :
852 :			- Back-tracing can be confused by callcc and capture.
853 :
854 :			- The only way of getting a back-trace right now is to explicitly
855 :			invoke the "trigger" function from your user program. Eventually, we
856 :			should make every exception carry back-trace information (if
857 :			available). But since this creates more overhead at "raise"-time
858 :			(similar to the current exnHistory overhead), I have not yet
859 :			implemented this. (The implementation will be rather easy.) With
860 :			exceptions carrying back-trace information, this facility will be even
861 :			more useful because users don't need to modify their programs...
862 :
863 :			- While it is possible to compile the compiler with back-trace
864 :			annotations turned on (I did it to get some confidence in
865 :			correctness), you must make absolutely sure that core.sml and
866 :			btimp.sml are compiled WITHOUT annotation! (core.sml cannot actually
867 :			be compiled with annotation because there is no core access yet, but
868 :			if you compile btimp.sml with annotation, then the system will go into
869 :			an infinite recursion and crash.)
870 :			Since CM currently does not know about BTrace, the only way to turn
871 :			annotations on and off for different modules of the compiler is to
872 :			interrupt CMB.make, change the settings, and re-invoke it. Of course,
873 :			this is awkward and clumsy.
874 :
875 :			Sample sessions:
876 :
877 :			Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
878 :			- SMLofNJ.Internals.BTrace.mode (SOME true);
879 :			[autoloading]
880 :			[autoloading done]
881 :			val it = false : bool
882 :			- structure X = struct
883 :			- fun main n = let
884 :			- fun a (x, 0) = d x
885 :			- | a (x, n) = b (x, n - 1)
886 :			- and b (x, n) = c (x, n)
887 :			- and c (x, n) = a (x, n)
888 :			- and d x = e (x, 3)
889 :			- and e (x, 0) = f x
890 :			- | e (x, n) = e (x, n - 1)
891 :			- and f 0 = SMLofNJ.Internals.BTrace.trigger ()
892 :			- | f n = n * g (n - 1)
893 :			- and g n = a (n, 3)
894 :			- in
895 :			- f n
896 :			- end
897 :			- end;
898 :			structure X : sig val main : int -> int end
899 :			- X.main 3;
900 :			*** BACK-TRACE ***
901 :			GOTO stdIn:4.2-13.20: X.main[2].f
902 :			GOTO-( stdIn:4.2-13.20: X.main[2].e
903 :			GOTO stdIn:4.2-13.20: X.main[2].d
904 :			/ stdIn:4.2-13.20: X.main[2].a
905 :			| stdIn:4.2-13.20: X.main[2].b
906 :			GOTO-\ stdIn:4.2-13.20: X.main[2].c
907 :			CALL stdIn:4.2-13.20: X.main[2].g
908 :			GOTO stdIn:4.2-13.20: X.main[2].f
909 :			GOTO-( stdIn:4.2-13.20: X.main[2].e
910 :			GOTO stdIn:4.2-13.20: X.main[2].d
911 :			/ stdIn:4.2-13.20: X.main[2].a
912 :			| stdIn:4.2-13.20: X.main[2].b
913 :			GOTO-\ stdIn:4.2-13.20: X.main[2].c
914 :			CALL stdIn:4.2-13.20: X.main[2].g
915 :			GOTO stdIn:4.2-13.20: X.main[2].f
916 :			GOTO-( stdIn:4.2-13.20: X.main[2].e
917 :			GOTO stdIn:4.2-13.20: X.main[2].d
918 :			/ stdIn:4.2-13.20: X.main[2].a
919 :			| stdIn:4.2-13.20: X.main[2].b
920 :			GOTO-\ stdIn:4.2-13.20: X.main[2].c
921 :			CALL stdIn:4.2-13.20: X.main[2].g
922 :			GOTO stdIn:4.2-13.20: X.main[2].f
923 :			CALL stdIn:2.15-17.4: X.main[2]
924 :			-
925 :
926 :			(Note that because of a FLINt bug the above code currently does not
927 :			compile without BTrace turned on.)
928 :
929 :			Here is another example, using my modified Tiger compiler:
930 :
931 :			Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
932 :			- SMLofNJ.Internals.BTrace.mode (SOME true);
933 :			[autoloading]
934 :			[autoloading done]
935 :			val it = false : bool
936 :			- CM.make "sources.cm";
937 :			[autoloading]
938 :			...
939 :			[autoloading done]
940 :			[scanning sources.cm]
941 :			[parsing (sources.cm):parse.sml]
942 :			[creating directory CM/SKEL ...]
943 :			[parsing (sources.cm):tiger.lex.sml]
944 :			...
945 :			[wrote CM/sparc-unix/semant.sml]
946 :			[compiling (sources.cm):main.sml]
947 :			[wrote CM/sparc-unix/main.sml]
948 :			[New bindings added.]
949 :			val it = true : bool
950 :			- Main.compile ("../testcases/merge.tig", "foo.out");
951 :			*** BACK-TRACE ***
952 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trvar
953 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
954 :			CALL lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
955 :			GOTO lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
956 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
957 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
958 :			CALL lib/semant.sml:488.3-505.6: SemantFun[2].transDec.trdec[2].transBody[2]
959 :			/ lib/semant.sml:411.65-543.8: SemantFun[2].transDec
960 :			CALL-\ lib/semant.sml:413.2-540.9: SemantFun[2].transDec.trdec[2]
961 :			CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
962 :			CALL lib/semant.sml:8.52-558.4: SemantFun[2].transProg[2]
963 :			CALL main.sml:1.18-118.4: Main.compile[2]
964 :			-
965 :
966 :			----------------------------------------------------------------------
967 :	blume	673	Name: Matthias Blumen
968 :			Date: 2000/06/21 18:00:00 JST
969 :			Tag: blume-20000621-manual
970 :			Description:
971 :
972 :			CM manual update: Path environments documented.
973 :
974 :			----------------------------------------------------------------------
975 :	blume	666	Name: Matthias Blume
976 :	blume	672	Date: 2000/06/19 13:40:00
977 :			Tag: blume-20000619-manual
978 :			Description:
979 :
980 :			CM manual and system/README update. This only covers the fact that
981 :			there are no more implicit anchors. (Path environments and the "bind"
982 :			option to "cm" have yet to be documented.)
983 :
984 :			----------------------------------------------------------------------
985 :			Name: Matthias Blume
986 :	blume	671	Date: 2000/06/19 11:05:00 JST
987 :			Tag: blume-20000619-chdir-bugfix
988 :			Description:
989 :
990 :			Fixed a bug in new SrcPath module that sometimes led to a bad chDir call.
991 :
992 :			----------------------------------------------------------------------
993 :			Name: Matthias Blume
994 :	blume	670	Date: 2000/06/18 22:00:10 JST
995 :			Tag: blume-20000618-implicit-anchors-really-gone
996 :			Description:
997 :
998 :			I updates the previous HISTORY entry where I forgot to mention that
999 :			implicit anchors are no longer with us.
1000 :
1001 :			The current update also gets rid of the (now useless) controller
1002 :			CM.Control.implicit_anchors.
1003 :
1004 :			----------------------------------------------------------------------
1005 :			Name: Matthias Blume
1006 :	blume	666	Date: 2000/06/16 17:30:00 JST
1007 :			Tag: blume-20000616-anchorenv
1008 :			Description:
1009 :
1010 :			This patch implements the long anticipated (just kidding :) "anchor
1011 :			environment" mechanism. In the course of doing this, I also
1012 :			re-implemented CM's internal "SrcPath" module from scratch. The new
1013 :			one should be more robust in certain boundary cases. In any case, it
1014 :			is a lot cleaner than its predecessor (IMHO).
1015 :
1016 :			This time, although there is yet another boot file format change, I
1017 :			kept the unpickler backward-compatible. As a result, no new bootfiles
1018 :			are necessary and bootstrapping is straightforward. (You cannot read
1019 :			new bootfiles into an old system, but the other way around is no
1020 :			problem.)
1021 :
1022 :			Visible changes:
1023 :
1024 :	blume	670	** 0. Implicit path anchors (without the leading $-symbol) are no
1025 :			longer recognized at all. This means that such path names are not
1026 :			illegal either. For example, the name basis.cm simply refers to a
1027 :			local file called "basis.cm" (i.e, the name is an ordinary path
1028 :			relative to .cm-files directory). Or, to put it differently, only
1029 :			names that start with $ are anchored paths.
1030 :	blume	666
1031 :	blume	670	** 1. The $<singlearc> abbreviation for $/<singlearc> has finally
1032 :			vanished.
1033 :
1034 :			John (Reppy) had critizised this as soon as I originally proposed and
1035 :	blume	666	implemented it, but at that time I did not really deeply believe
1036 :			him. :) Now I came full-circle because I need the $<singlearc> syntax
1037 :			in another place where it cannot be seen as an abbreviation for
1038 :			$/<singlearc>. To avoid the confusion, $<singlearc> now means what it
1039 :			seems to mean (i.e., it "expands" into the corresponding anchor
1040 :			value).
1041 :
1042 :			However, when paths are used as members in CM description files, it
1043 :			continues to be true that there must be at least another arc after the
1044 :			anchor. This is now enforced separately during semantic analysis
1045 :	blume	670	(i.e., from a lexical/syntactical point of view, the notation is ok.)
1046 :	blume	666
1047 :			** 2. The "cm" class now accepts an option "bind". The option's value
1048 :			is a sub-option list of precisely two items -- one labeled "anchor"
1049 :			and the other one labeled "value". As you might expect, "anchor" is
1050 :			used to specify an anchor name to be bound, and "value" specifies what
1051 :			the anchor is being bound to.
1052 :
1053 :			The value must be a directory name and can be given in either standard
1054 :			syntax (including the possibility that it is itself an anchored path)
1055 :			or native syntax.
1056 :
1057 :			Examples:
1058 :
1059 :			foo.cm (bind:(anchor:bar value:$mystuff/bar))
1060 :			lib.cm (bind:(anchor:a value:"H:\\x\\y\\z")) (* only works under windows *)
1061 :
1062 :			and so on.
1063 :
1064 :			The meaning of this is that the .cm-file will be processed with an
1065 :			augmented anchor environment where the given anchor(s) is/are bound to
1066 :			the given values(s).
1067 :
1068 :			The rationale for having this feature is this: Suppose you are trying
1069 :			to use two different (already stable) libraries a.cm and b.cm (that
1070 :			you perhaps didn't write yourself). Further, suppose each of these
1071 :			two libraries internally uses its own auxiliary library $aux/lib.cm.
1072 :			Normally you would now have a problem because the anchor "lib" can not
1073 :			be bound to more than one value globally. Therefore, the project that
1074 :			uses both a.cm and b.cm must locally redirect the anchor to some other
1075 :			place:
1076 :
1077 :			a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
1078 :			b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
1079 :
1080 :			This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
1081 :			/usr/lib/smlnj/b-stuff/aux.cm, respectively.
1082 :
1083 :			Hard-wiring path names is a bit inflexible (and CM will verbosely warn
1084 :			you when you do so at the time of CM.stabilize). Therefore, you can
1085 :			also use an anchored path as the value:
1086 :
1087 :			a.cm (bind:(anchor:lib value:$a-lib))
1088 :			b.cm (bind:(anchor:lib value:$b-lib))
1089 :
1090 :			Now you can globally configure (using the usual CM.Anchor.anchor or
1091 :			pathconfig machinery) bindings for "a-lib" and "b-lib". Since "lib"
1092 :			itself is always locally bound, setting it globally is no longer
1093 :			meaningful or necessary (but it does not hurt either). In fact, "lib"
1094 :			can still be used as a global anchor for separate purposes. As a
1095 :			matter of fact, one can locally define "lib" in terms of a global
1096 :			"lib":
1097 :
1098 :			a.cm (bind:(anchor:lib value:$lib/a))
1099 :			b.cm (bind:(anchor:lib value:$lib/b))
1100 :
1101 :			** 3: The encoding of path names has changed. This affects the way
1102 :			path names are shown in CM's progress report and also the internal
1103 :			protocol encoding used for parallel make.
1104 :
1105 :			The encoding now uses one or more ':'-separated segments. Each
1106 :			segments corresponds to a file that has been specified relative to the
1107 :			file given by its preceding segment. The first segment is either
1108 :			relative to the CWD, absolute, or anchored. Each segment itself is
1109 :			basically a Unix pathname; all segments but the first are relative.
1110 :
1111 :			Example:
1112 :
1113 :			$foo/bar/baz.cm:a/b/c.sml
1114 :
1115 :			This path denotes the file bar/a/b/c.sml relative to the directory
1116 :			denoted by anchor "foo". Notice that the encoding also includes
1117 :			baz.cm which is the .cm-file that listed a/b/c.sml. As usual, such
1118 :			paths are resolved relative to the .cm-files directory, so baz.cm must
1119 :			be ignored to get the "real" pathname.
1120 :
1121 :			To make this fact more obvious, CM puts the names of such "virtual
1122 :			arcs" into parentheses when they appear in progress reports. (No
1123 :			parentheses will appear in the internal protocol encoding.) Thus,
1124 :			what you really see is:
1125 :
1126 :			$foo/bar/(baz.cm):a/b/c.sml
1127 :
1128 :			I find this notation to be much more informative than before.
1129 :
1130 :			Another new feature of the encoding is that special characters
1131 :			including parentheses, colons, (back)slashes, and white space are
1132 :			written as \ddd (where ddd is the decimal encoding of the character).
1133 :
1134 :	blume	670	*** The CM manual still needs to be updated.
1135 :
1136 :	blume	666	----------------------------------------------------------------------
1137 :	leunga	660	Name: Allen Leung
1138 :			Date: 2000/06/15 00:38:00
1139 :			Tag: leunga-20000615-x86-peephole
1140 :
1141 :			x86 Peephole fix by Fermin. Affects c-- and moby only.
1142 :
1143 :			----------------------------------------------------------------------
1144 :	blume	658	Name: Matthias Blume
1145 :			Date: 2000/06/12 11:40:00
1146 :			Tag: blume-20000612-parmakefix
1147 :			Description:
1148 :
1149 :			More cleanup after changing the file naming scheme: This time I
1150 :			repaired the parallel make mechanism for CMB.make which I broke earlier.
1151 :
1152 :			----------------------------------------------------------------------
1153 :	leunga	657	Name: Allen Leung
1154 :			Date: 2000/06/09 01:25:00
1155 :			Tag: leunga-20000609-various
1156 :
1157 :			None of these things should affect normal SML/NJ operations
1158 :
1159 :			1. Peephole improvements provided by Fermin (c--)
1160 :			2. New annotation DEFUSE for adding extra dependence (moby)
1161 :			3. New X86 LOCK instructions (moby)
1162 :			4. New machine description language for reservation tables (scheduling)
1163 :			5. Fixes to various optimization/analysis modules (branch chaining, dominator
1164 :			trees etc.)
1165 :			6. I've changed the CM files so that they can work with versions
1166 :			110.0.6, 110.25 and 110.28
1167 :
1168 :			----------------------------------------------------------------------
1169 :	blume	652	Name: Matthias Blume
1170 :	blume	656	Date: 2000/06/09 12:40:00
1171 :			Tag: blume-20000609-log
1172 :			Description:
1173 :
1174 :			- Removed all(?) remaining RCS Log entries from sources.
1175 :
1176 :			- Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
1177 :			anchored paths).
1178 :
1179 :			----------------------------------------------------------------------
1180 :			Name: Matthias Blume
1181 :	blume	653	Date: 2000/06/07 17:00:00 JST
1182 :			Tag: blume-20000607-no-implicit-anchors
1183 :			Description:
1184 :
1185 :			1. This update changes the default setting for
1186 :			CM.Control.implicit_anchors from true to false. This means that
1187 :			implicit anchors are no longer permitted by default. I also tried to
1188 :			make sure that nothing else still relies on implicit anchors.
1189 :			(This is the next step on the schedule towards a CM that does not even
1190 :			have the notion of implicit anchors anymore.)
1191 :
1192 :			2. More CM manual updates.
1193 :
1194 :			3. I managed to track down and fix the pickling bug I mentioned last
1195 :			time. Because of the previously existing workaround, this entails no
1196 :			immediate practical changes.
1197 :
1198 :			----------------------------------------------------------------------
1199 :			Name: Matthias Blume
1200 :	blume	652	Date: 2000/06/06 11:15:00 JST
1201 :			Tag: blume-20000606-lazierpickle
1202 :			Description:
1203 :
1204 :			!!!! NEW BOOT FILES !!!!
1205 :
1206 :			* The main purpose of this update is to make library pickles lazier in
1207 :			order to reduce the initial space penalty for autoloading a library.
1208 :			As a result, it is now possible to have $smlnj/compiler.cm
1209 :			pre-registered. This should take care of the many complaints or
1210 :			inquiries about missing structure Compiler. This required changes to
1211 :			CM's internal data structures and small tweaks to some algorithms.
1212 :
1213 :			As a neat additional effect, it is no longer necessary (for the sake
1214 :			of lean heap image files) to distinguish between a "minimal" CM and a
1215 :			"full" CM. Now, there is only one CM (i.e., the "full" version:
1216 :			$smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
1217 :			interactive top level. ($smlnj/cm/minimal.cm is gone.)
1218 :
1219 :			To make the life of compiler-hackers easier, "makeml" now also
1220 :			pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm). In other
1221 :			words, after you bootstrap a new sml for the first time, you will not
1222 :			have to autoload $smlnj/cmb.cm again afterwards. (The first time
1223 :			around you will still have to do it, though.)
1224 :
1225 :			* A second change consists of major updates to the CM manual. There
1226 :			are now several appendices with summary information and also a full
1227 :			specification of the CM description file syntax.
1228 :
1229 :			* In directory src/system I added the script "allcross". This script
1230 :			invokes sml and cross-compiles the compiler for all supported
1231 :			architectures. (Useful when providing a new set of boot files.)
1232 :
1233 :			* There seems to be a latent bug in my "lazy pickles" mechanism. I
1234 :			added a small tweak to pickle-util.sml to work around this problem,
1235 :			but it is not a proper fix yet. I will investigate further. (The
1236 :			effect of the bug was an inflation of library pickle size.)
1237 :
1238 :			* Version number increased to 110.28.1 (to avoid compatibility problems).
1239 :
1240 :			----------------------------------------------------------------------
1241 :	leunga	646	Name: Allen Leung
1242 :	leunga	648	Date: 2000/05/25 17:28 EDT
1243 :			Tag: leunga-20000525-ra
1244 :			Description:
1245 :
1246 :			Fixed a bug in freezing phase of the register allocator.
1247 :
1248 :			----------------------------------------------------------------------
1249 :			Name: Allen Leung
1250 :	leunga	647	Date: 2000/05/15 22:53 EDT
1251 :	leunga	646	Tag: leunga-20000515-alpha-x86-ra
1252 :			Description:
1253 :
1254 :			1. Alpha
1255 :
1256 :			Slight cleanup. Removed the instruction SGNXL
1257 :
1258 :			2. X86
1259 :
1260 :			Added the following instructions to the instruction set:
1261 :
1262 :			ROLx, RORx,
1263 :			BTx, BTSx, BTLx, BTRx,
1264 :			XCHGx, and variants with the LOCK prefix
1265 :
1266 :			3. Register Allocation
1267 :
1268 :			The module ra-rewrite-with-renaming has been improved.
1269 :
1270 :	leunga	647	These have no effect on SML/NJ.
1271 :
1272 :	leunga	646	----------------------------------------------------------------------
1273 :	blume	642	Name: Matthias Blume
1274 :	blume	645	Date: 2000/05/15 16:20:00 JST
1275 :			Tag: blume-20000515-lightrebuild
1276 :			Description:
1277 :
1278 :			1. I added an alternative to "-rebuild" to "makeml". The difference is
1279 :			that prior to calling CMB.make' the CM-variable "LIGHT" will be
1280 :			defined. In effect, the command will not build any cross-compiler
1281 :			backends and therefore finish more quickly.
1282 :
1283 :			The "fixpt" script also takes a "-light" switch to be able to use
1284 :			this new facility while compiling for a fixpoint.
1285 :
1286 :			2. I replaced all mentions of anchored paths in group owner specifications
1287 :			with simple relative paths (usually starting with "..").
1288 :			The rationale is that a library's internal workings should not be
1289 :			compromised by the lack of some anchor. (An anchor is necessary
1290 :			for someone who wants to refer to the library by an anchored path,
1291 :			but it should not be necessary to build the same library in the first
1292 :			place.)
1293 :
1294 :			3. I changed the way CM's tool mechanism determines the shell command
1295 :			string used for things like ml-yacc etc. so that it does not break
1296 :			when CM.Control.implicit_anchors is turned off.
1297 :
1298 :			----------------------------------------------------------------------
1299 :			Name: Matthias Blume
1300 :	blume	644	Date: 2000/05/12 18:20:00 JST
1301 :			Tag: blume-20000512-ml-build
1302 :			Description:
1303 :
1304 :			Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
1305 :			getting installed properly (by config/install.sh).
1306 :
1307 :			----------------------------------------------------------------------
1308 :			Name: Matthias Blume
1309 :	blume	643	Date: 2000/05/12 17:30:00 JST
1310 :			Tag: blume-20000512-anchors
1311 :			Description:
1312 :
1313 :			!!! NEW BOOT FILES !!!
1314 :
1315 :			This change is in preparation of fading out support for "implicitly
1316 :			anchored path names". I went through all sources and used the
1317 :			explicit (and relatively new) $-notation. See system/README and the
1318 :			CM manual for more info on this.
1319 :
1320 :			I also modified the anchoring scheme for some things such as "smlnj",
1321 :			"MLRISC", "cm", etc. to take advantage of the fact that explicit
1322 :			anchors are more expressive: anchor name and first arc do not have to
1323 :			coincide. This entails the following user-visible change:
1324 :
1325 :			You have to write $smlnj/foo/bar instead of smlnj/foo/bar. In
1326 :			particular, when you fire up sml with a command-line argument, say,
1327 :			e.g.:
1328 :
1329 :			sml '$smlnj/cmb.cm'
1330 :
1331 :			At the ML toplevel prompt:
1332 :
1333 :			CM.autoload "$smlnj/cmb.cm";
1334 :
1335 :			There is also a new controller in CM.Control that can be used to turn
1336 :			off all remaining support for implicit anchors by saying:
1337 :
1338 :			CM.autoload "$smlnj/
1339 :			#set CM.Control.implicit_anchors false;
1340 :
1341 :			This causes CM to reject implicitly anchored paths. This is (for the
1342 :			time being) less permissive than the "final" version where there will
1343 :			be no more such implicit anchors and relative paths will be just that:
1344 :			relative.
1345 :
1346 :			The next step (version after next version?) will be to make the
1347 :			default for CM.Control.implicit_anchors false. After the dust has
1348 :			settled, I can then produce the "final" version of this...
1349 :
1350 :			Note: Since bootstrapping is a bit tricky, I provided new boot files.
1351 :
1352 :			----------------------------------------------------------------------
1353 :			Name: Matthias Blume
1354 :	blume	642	Date: 2000/05/11 16:30:00 JST
1355 :			Tag: blume-20000511-sources
1356 :			Description:
1357 :
1358 :			The main change is that I added function CM.sources as a generalized
1359 :			version of the earlier CM.makedepend. This entails the following
1360 :			additional changes:
1361 :
1362 :			- CM.makedepend has been dropped.
1363 :
1364 :			- CM manual has been updated.
1365 :
1366 :			- TOOLS signature and API have been changed.
1367 :
1368 :			----------------------------------------------------------------------
1369 :	leunga	640	Name: Allen Leung
1370 :	leunga	641	Date: 2000/05/10 21:17 EDT
1371 :			Tag: leunga-20000510-moby-c--ssa
1372 :			Description:
1373 :
1374 :			Various bug fixes and new features for C--, Moby and MLRISC optimizations.
1375 :			None of these affect SML/NJ.
1376 :
1377 :			1. Register Allocation
1378 :
1379 :			a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
1380 :			This module tries to remove local (i.e. basic block level) redundancies
1381 :			during spilling.
1382 :
1383 :			b. A new framework for performing region based register allocation.
1384 :			Not yet entirely functional.
1385 :
1386 :			2. X86
1387 :
1388 :			a. DefUse for POP was missing the stack pointer [found by Lal]
1389 :			b. Reload for CALL was incorrect in X86Spill [found by John]
1390 :			c. Various fixes in X86Spill so that it can be used correctly for
1391 :			the new spilling module.
1392 :
1393 :			3. SSA/IR
1394 :
1395 :			a. New module ir/dj-dataflow.sml implements elimination based
1396 :			data flow analysis.
1397 :
1398 :			4. MLRiscGen
1399 :
1400 :			a. Fix for gc type annotation
1401 :
1402 :			5. MDGen
1403 :
1404 :			Various fixes for machine description -> ml code translation. For ssa
1405 :			only.
1406 :
1407 :			----------------------------------------------------------------------
1408 :			Name: Allen Leung
1409 :	leunga	640	Date: 2000/05/08 22:17 EDT
1410 :			Tag: leunga-20000508-labexp
1411 :			Description:
1412 :
1413 :			Fermin has found a few assembly problems with constant expressions
1414 :			generated in LabelExp. Mostly, the problems involve extra parentheses,
1415 :			which choke on dumb assemblers. This is his fix.
1416 :
1417 :			----------------------------------------------------------------------
1418 :	dbm	635	Name: Dave MacQueen
1419 :			Date: 2000/04/09 14:00 EDT
1420 :			Tag: dbm-20000502-Version_110_28
1421 :			Description:
1422 :
1423 :			1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
1424 :
1425 :			2. Updated config/version to 110.28
1426 :
1427 :			3. Updated config/srcarchiveurl
1428 :
1429 :			3. New boot files!
1430 :			ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
1431 :
1432 :			----------------------------------------------------------------------
1433 :	blume	634	Name: Matthias Blume
1434 :			Date: 2000/05/01 19:05:00 JST
1435 :			Tag: blume-20000501-noweb
1436 :			Description:
1437 :
1438 :			A new noweb tool has been added. The existing system is entirely
1439 :			unaffected by this, but some CM users have asked for renewed noweb
1440 :			support. Everything is documented in the CM manual.
1441 :
1442 :			New (plugin) libraries:
1443 :
1444 :			noweb-tool.cm
1445 :			nw-ext.cm
1446 :
1447 :			----------------------------------------------------------------------
1448 :	dbm	633	Name: Dave MacQueen
1449 :			Date: 2000/04/30 12:40PM EDT
1450 :			Tag: dbm-20000430-bug_fixes
1451 :			Description:
1452 :
1453 :			1. Fix for bug 1498
1454 :			smlnj/src/system/Basis/Implementation/Unsafe/object.sig
1455 :			smlnj/src/system/Basis/Implementation/Unsafe/object.sml
1456 :			added toRealArray function
1457 :			smlnj/src/compiler/MiscUtil/print/ppobj.sml
1458 :			added check for tag Obj.RealArray to array printing case in ppObj
1459 :
1460 :			2. Fix for bug 1510
1461 :			smlnj/src/compiler/Semant/types/typesutil.sml
1462 :			fixed definition of dummyargs (used by equalTycon) so that
1463 :			dummy args are distinct types
1464 :
1465 :			----------------------------------------------------------------------
1466 :	blume	629	Name: Matthias Blume
1467 :	blume	632	Date: 2000/04/30 01:00:00 JST
1468 :			Tag: blume-20000430-versions
1469 :			Description:
1470 :
1471 :			1. CM version numbering added. This is an implementation of Lal's
1472 :			proposal for adding version numbers and version checking to .cm
1473 :			files. Lal said that his proposal was just that -- a proposal.
1474 :			For the time being I went ahead and implemented it so that people
1475 :			can comment on it. Everything is completely backward-compatible
1476 :			(except for the stable library format, i.e., new bootfiles!).
1477 :
1478 :			As usual, see the CM manual for details.
1479 :
1480 :			2. An alternative syntax for anchored paths has been implemented.
1481 :			Dave has recently voiced the same concerns that I had when I did
1482 :			this, so there should be some support. My take is that eventually
1483 :			I will let support for the current syntax (where anchors are
1484 :			"implicit") fade out in favor of the new, explicit syntax.
1485 :			In order to be backward-compatible, both old and new syntax are
1486 :			currently supported.
1487 :
1488 :			Again, see the CM manual for details.
1489 :
1490 :			3. Parallel make is trying to be slightly smarter: When the master
1491 :			process finds a "bottleneck", i.e., when there is only one
1492 :			compilation unit that can be compiled and everybody else is
1493 :			waiting on it, then it will simply compile it directly instead
1494 :			of clumsily telling one of the slaves to do it.
1495 :
1496 :			4. Support for "unsharing" added. This is necessary in order to be
1497 :			able to have two different versions of the same library running
1498 :			at the same time (e.g., for trying out a new MLRISC while still
1499 :			having the old MLRISC linked into the current compiler, etc.)
1500 :			See the CM manual.
1501 :
1502 :			5. Simple "makedepend" functionality added for generating Makefile
1503 :			dependency information. (This is rather crude at the moment.
1504 :			Expect some changes here in the future.)
1505 :
1506 :			6. ".fun" added as a recognized suffix for ML files. Also documented
1507 :			explicitly in the manual that the fallback behavior (unknown suffix
1508 :			-> ML file) is not an official feature!
1509 :
1510 :			7. Small changes to the pickler for stable libraries.
1511 :
1512 :			8. Several internal changes to CM (for cleanup/improvement).
1513 :
1514 :
1515 :			!!!! NEW BINFILES !!!!
1516 :
1517 :			----------------------------------------------------------------------
1518 :			Name: Matthias Blume
1519 :	blume	631	Date: 2000/04/28 17:30:00 JST
1520 :			Tag: blume-20000428-pathconfig
1521 :			Description:
1522 :
1523 :			1. I changed config/install.sh to remove duplicate entries from the
1524 :			lib/pathconfig file at the end. Moreover, the final version of
1525 :			lib/pathconfig is sorted alphabetically. The same (sorting) is done
1526 :			in src/system/installml.
1527 :
1528 :			2. The config/install.sh script now consistently uses relative
1529 :			pathnames in lib/pathconfig whenever the anchor is in the lib
1530 :			directory. (So far this was true for the libraries that come
1531 :			pre-compiled and bundled as part of the bootfiles but not for
1532 :			libraries that are compiled by the script itself.)
1533 :
1534 :			----------------------------------------------------------------------
1535 :			Name: Matthias Blume
1536 :	blume	629	Date: 2000/04/26 13:10:00 JST
1537 :			Tag: blume-20000426-fun_suffix
1538 :			Description:
1539 :
1540 :			Added ".fun" as a recognized file name suffix (for ML code).
1541 :
1542 :			----------------------------------------------------------------------
1543 :	leunga	628	Name: Allen Leung
1544 :			Date: 2000/04/25 17:00:00 EST
1545 :			Tag: leunga-20000425-alpha-ra
1546 :			Description:
1547 :
1548 :			1. Alpha
1549 :
1550 :			PSEUDOARITH was missing in AlphaRewrite. This causes an endless loop
1551 :			in C--.
1552 :
1553 :			2. RA
1554 :
1555 :			Added a flag "ra-dump-size" to print out the size of the flowgraph
1556 :			and the interference graph.
1557 :
1558 :			----------------------------------------------------------------------
1559 :	dbm	627	Name: Dave MacQueen
1560 :			Date: 2000/04/25/
1561 :			Tag: dbm-20000425-mlyacc_doc_examples
1562 :			Description:
1563 :			Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
1564 :			Updated all three examples in src/ml-yacc/examples to run
1565 :			under 110.* using CM.make.
1566 :
1567 :			----------------------------------------------------------------------
1568 :	leunga	624	Name: Allen Leung
1569 :			Date: 2000/04/20 23:04:00 EST
1570 :			Tag: leunga-20000420-ssa-c---stuff
1571 :			Description:
1572 :
1573 :			This update synchronizes my repository with Yale's. Most of these
1574 :			changes, however, do not affect SML/NJ at all (the RA is an exception).
1575 :
1576 :			1. Register Allocator
1577 :
1578 :			a. An improvement in the interference graph construction:
1579 :			Given a copy
1580 :
1581 :			s <- t
1582 :
1583 :	leunga	628	no interference edge between s and t is added for this definition of s.
1584 :	leunga	624
1585 :			b. I've added two new spill heuristic modules that Fermin and I developed
1586 :			(in the new library RA.cm). These are unused in SML/NJ but maybe
1587 :			useful for others (Moby?)
1588 :
1589 :			2. X86
1590 :
1591 :			a. Various fixes in the backend provided by Fermin [C--] and Lal.
1592 :
1593 :			3. Alpha
1594 :
1595 :			a. Added the BSR instruction and code generation that goes with it [C--]
1596 :			b. Other fixes too numerous to recount provided by Fermin [C--]
1597 :
1598 :			4. Regmaps
1599 :
1600 :			a. The regmaps are not initialized with the identity physical bindings
1601 :			at creation time. This is unneeded.
1602 :
1603 :			5. MLRISC Optimizations
1604 :
1605 :			a. The DJ-Graph module can now compute the iterated dominance frontiers
1606 :			intersects with liveness incrementally in linear time! Woohoo!
1607 :			This is now used in my new SSA construction algorithm.
1608 :
1609 :			b. THe branch reorganization module is now smarter about linear chains of
1610 :			basic blocks.
1611 :
1612 :
1613 :			----------------------------------------------------------------------
1614 :	blume	615	Name: Matthias Blume
1615 :			Date: 2000/04/12 13:52:00 JST
1616 :			Tag: blume_main_v110p27_1
1617 :			Description:
1618 :
1619 :			Changed install.sh script to handle archive files without version number
1620 :			and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
1621 :			name of the boot file archive.
1622 :
1623 :			----------------------------------------------------------------------
1624 :	dbm	607	Name: Dave MacQueen
1625 :			Date: 2000/04/09 14:00 EDT
1626 :			Tag: dbm-20000410-Version_110_27
1627 :			Description:
1628 :
1629 :			1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
1630 :
1631 :			2. Updated src/config/version to 110.27
1632 :
1633 :			3. New boot files!
1634 :
1635 :			----------------------------------------------------------------------
1636 :	leunga	606	Name: Allen Leung
1637 :			Date: 2000/04/09 19:09:00 EST
1638 :			Tag: leunga-20000409-misc
1639 :			Description:
1640 :
1641 :			1. Yet another fix for x86 assembly for idivl, imull, mull and friends.
1642 :
1643 :			2. Miscellaneous improvements to MLRISC (unused in sml/nj)
1644 :
1645 :			----------------------------------------------------------------------
1646 :	monnier	605	Name: Stefan
1647 :			Date: 2000/04/07 10:00:00 EDT
1648 :			Tag: monnier-20000406-branch-handling
1649 :			Description:
1650 :
1651 :			Improved handling of branches (mostly those generated from
1652 :			polymorphic equality), removed switchoff and changed the
1653 :			default optimization settings (more cpsopt and less flintopt).
1654 :
1655 :			----------------------------------------------------------------------
1656 :	leunga	601	Name: Allen Leung
1657 :	leunga	602	Date: 2000/04/06 01:30:00 EST
1658 :			Tag: leunga-20000406-peephole-x86-SSA-2
1659 :			Description:
1660 :
1661 :			Forgot a few files.
1662 :
1663 :			----------------------------------------------------------------------
1664 :			Name: Allen Leung
1665 :	leunga	601	Date: 2000/04/06 00:36:00 EST
1666 :			Tag: leunga-20000406-peephole-x86-SSA
1667 :			Description:
1668 :
1669 :			1. New Peephole code
1670 :
1671 :			2. Minor improvement to X86 instruction selection
1672 :
1673 :			3. Various fixes to SSA and machine description -> code translator
1674 :
1675 :			----------------------------------------------------------------------
1676 :	blume	595	Name: Matthias Blume
1677 :			Date: 2000/04/05 12:30:00 JST
1678 :			Tag: blume_main_v110p26p2_3
1679 :			Description:
1680 :
1681 :			This update just merges three minor cosmetic updates to CM's sources
1682 :			to get ready for the 110.27 code freeze on Friday. No functionality
1683 :			has changed.
1684 :
1685 :			----------------------------------------------------------------------
1686 :	leunga	593	Name: Allen Leung
1687 :	leunga	594	Date: 2000/04/04 19:39:00 EST
1688 :			Tag: leunga-20000404-x86-asm
1689 :			Description:
1690 :
1691 :			1. Fixed a problem in X86 assembly.
1692 :
1693 :			Things like
1694 :
1695 :			jmp %eax
1696 :			jmp (%eax)
1697 :
1698 :			should be output as
1699 :
1700 :			jmp *%eax
1701 :			jmp *(%eax)
1702 :
1703 :			2. Assembly output
1704 :
1705 :			Added a new flag
1706 :
1707 :			"asm-indent-copies" (default to false)
1708 :
1709 :			When this flag is on, parallel copies will be indented an extra level.
1710 :
1711 :			----------------------------------------------------------------------
1712 :			Name: Allen Leung
1713 :	leunga	593	Date: 2000/04/04 03:18:00 EST
1714 :			Tag: leunga-20000404-C--Moby
1715 :			Description:
1716 :
1717 :			All of these fixes are related to C--, Moby, and my own optimization
1718 :			stuff; so they shouldn't affect SML/NJ.
1719 :
1720 :			1. X86
1721 :
1722 :			Various fixes related floating point, and extensions.
1723 :
1724 :			2. Alpha
1725 :
1726 :			Some extra patterns related to loads with signed/zero extension
1727 :			provided by Fermin.
1728 :
1729 :			3. Assembly
1730 :
1731 :	monnier	659	When generating assembly, resolve the value of client defined constants,
1732 :	leunga	593	instead of generating symbolic values. This is controlled by the
1733 :			new flag "asm-resolve-constants", which is default to true.
1734 :
1735 :			4. Machine Descriptions
1736 :
1737 :			a. The precedence parser was slightly broken when parsing infixr symbols.
1738 :			b. The type generalizing code had the bound variables reversed, resulting
1739 :			in a problem during arity raising.
1740 :			c. Various fixes in machine descriptions.
1741 :
1742 :			----------------------------------------------------------------------
1743 :	blume	592	Name: Matthias Blume
1744 :			Date: 2000/04/03 16:05:00 JST
1745 :			Tag: blume_main_v110p26p2_2
1746 :			Description:
1747 :
1748 :			I eliminated coreEnv from compInfo. Access to the "Core" structure is
1749 :			now done via the ordinary static environment that is context to each
1750 :			compilation unit.
1751 :
1752 :			To this end, I arranged that instead of "structure Core" as "structure
1753 :			_Core" is bound in the pervasive environment. Core access is done via
1754 :	monnier	659	_Core (which can never be accidentally rebound because _Core is not a
1755 :	blume	592	legal surface-syntax symbol).
1756 :
1757 :			The current solution is much cleaner because the core environment is
1758 :			now simply part of the pervasive environment which is part of every
1759 :			compilation unit's context anyway. In particular, this eliminates all
1760 :			special-case handling that was necessary until now in order to deal
1761 :			with dynamic and symbolic parts of the core environment.
1762 :
1763 :			Remaining hackery (to bind the "magic" symbol _Core) is localized in the
1764 :	monnier	659	compilation manager's bootstrap compiler (actually: in the "init group"
1765 :	blume	592	handling). See the comments in src/system/smlnj/init/init.cmi for
1766 :			more details.
1767 :
1768 :			I also tried to track down all mentions of "Core" (as string argument
1769 :			to Symbol.strSymbol) in the compiler and replaced them with a
1770 :			reference to the new CoreSym.coreSym. Seems cleaner since the actual
1771 :			name appears in one place only.
1772 :
1773 :			Binfile and bootfile format have not changed, but the switchover from
1774 :			the old "init.cmi" to the new one is a bit tricky, so I supplied new
1775 :			bootfiles anyway.
1776 :
1777 :			----------------------------------------------------------------------
1778 :	leunga	591	Name: Allen Leung
1779 :			Date: 2000/04/02 21:17:00 EST
1780 :			Tag: leunga-20000402-mltree
1781 :			Description:
1782 :	leunga	585
1783 :	leunga	591	1. Renamed the constructor CALL in MLTREE by popular demand.
1784 :			2. Added a bunch of files from my repository. These are currently
1785 :			used by other non-SMLNJ backends.
1786 :
1787 :	leunga	576	----------------------------------------------------------------------
1788 :	leunga	590	Name: Allen Leung
1789 :			Date: 2000/03/31 21:15:00 EST
1790 :			Tag: leunga-20000331-aliasing
1791 :			Description:
1792 :
1793 :			This update contains a rewritten (and hopefully more correct) module
1794 :			for extracting aliasing information from CPS.
1795 :
1796 :			To turn on this feature:
1797 :
1798 :			Compiler.Control.CG.memDisambiguate := true
1799 :
1800 :			To pretty print the region information with assembly
1801 :
1802 :			Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
1803 :
1804 :			To control how many levels of aliasing information are printed, use:
1805 :
1806 :			Compiler.Control.MLRISC.getInt "points-to-show-level" := n
1807 :
1808 :			The default of n is 3.
1809 :
1810 :			----------------------------------------------------------------------
1811 :	dbm	589	Name: David MacQueen
1812 :			Date: 2000/03/31 11:15:00 EST
1813 :			Tag: dbm-20000331-runtime_fix
1814 :			Description:
1815 :
1816 :			This update contains:
1817 :
1818 :			1. runtime/c-lib/c-libraries.c
1819 :			includes added in revision 1.2 caused compilation errors on hppa-hpux
1820 :
1821 :			2. fix for bug 1556
1822 :			system/Basis/Implementation/NJ/internal-signals.sml
1823 :
1824 :			----------------------------------------------------------------------
1825 :	blume	587	Name: Matthias Blume
1826 :	blume	588	Date: 2000/03/31 18:00:00 JST
1827 :			Tag: blume_main_v110p26p2_1
1828 :			Description:
1829 :
1830 :			This update contains:
1831 :
1832 :			1. A small change to CM's handling of stable libraries:
1833 :			CM now maintains one "global" modmap that is used for all stable
1834 :			libraries. The use of such a global modmap maximizes sharing and
1835 :			minimizes the need for re-traversing parts of environments during
1836 :			modmap construction. (However, this has minor impact since modmap
1837 :			construction seems to account for just one percent or less of total
1838 :			compile time.)
1839 :
1840 :			2. I added a "genmap" phase to the statistics. This is where I got the
1841 :			"one percent" number (see above).
1842 :
1843 :			3. CM's new tool parameter mechanism just became _even_ better. :)
1844 :			- The parser understands named parameters and recursive options.
1845 :			- The "make" and "shell" tools use these new features.
1846 :			(This makes it a lot easier to cascade these tools.)
1847 :			- There is a small syntax change: named parameters use a
1848 :
1849 :			<name> : ( <option> ... ) or
1850 :			<name> : <string>
1851 :
1852 :			syntax. Previously, named parameters were implemented in an
1853 :			ad-hoc fashion by each tool individually (by parsing strings)
1854 :			and had the form
1855 :
1856 :			<name>=<string>
1857 :
1858 :			See the CM manual for a full description of these issues.
1859 :
1860 :			----------------------------------------------------------------------
1861 :			Name: Matthias Blume
1862 :	blume	587	Date: 2000/03/30 18:00:00 JST
1863 :			Tag: blume_main_v110p26p2_0
1864 :			Description:
1865 :
1866 :			!!!!! WARNING !!!!!!
1867 :			!! New binfiles !!
1868 :			!!!!!!!!!!!!!!!!!!!!
1869 :
1870 :			This update contains:
1871 :
1872 :			1. Moderate changes to CM:
1873 :
1874 :			- Changes to CM's tools mechanism. In particular, it is now possible
1875 :			to have tools that accept additional "command line" parameters
1876 :			(specified in the .cm file at each instance where the tool's class is
1877 :			used).
1878 :
1879 :	monnier	659	This was done to accommodate the new "make" and "shell" tools which
1880 :			facilitate fairly seamless hookup to portions of code managed using
1881 :	blume	587	Makefiles or Shell scripts.
1882 :
1883 :			There are no classes "shared" or "private" anymore. Instead, the
1884 :			sharing annotation is now a parameter to the "sml" class.
1885 :
1886 :			There is a bit of generic machinery for implementing one's own
1887 :			tools that accept command-line parameters. However, I am not yet fully
1888 :			satisfied with that part, so expect changes here in the future.
1889 :
1890 :			All existing tools are described in the CM manual.
1891 :
1892 :	monnier	659	- Slightly better error handling. (CM now suppresses many followup
1893 :	blume	587	error messages that tended to be more annoying than helpful.)
1894 :
1895 :			2. Major changes to the compiler's static environment data structures.
1896 :
1897 :			- no CMStaticEnv anymore.
1898 :			- no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
1899 :			but it is called Environment), no conversions between different
1900 :			kinds of static environments
1901 :
1902 :			- There is still a notion of a "modmap", but such modmaps are generated
1903 :			on demand at the time when they are needed. This sounds slow, but I
1904 :			sped up the code that generates modmaps enough for this not to lead to
1905 :			a slowdown of the compiler (at least I didn't detect any).
1906 :
1907 :			- To facilitate rapid modmap generation, static environments now
1908 :			contain an (optional) "modtree" structure. Modtree annotations are
1909 :			constructed by the unpickler during unpickling. (This means that
1910 :			the elaborator does not have to worry about modtrees at all.)
1911 :			Modtrees have the advantage that they are compositional in the same
1912 :			way as the environment data structure itself is compositional.
1913 :			As a result, modtrees never hang on to parts of an environment that
1914 :			has already been rendered "stale" by filtering or rebinding.
1915 :
1916 :			- I went through many, many trials and errors before arriving at the
1917 :			current solution. (The initial idea of "linkpaths" did not work.)
1918 :			But the result of all this is that I have touched a lot of files that
1919 :			depend on the "modules" and "types" data structures (most of the
1920 :			elaborator). There were a lot of changes during my "linkpath" trials
1921 :			that could have been reverted to their original state but weren't.
1922 :			Please, don't be too harsh on me for messing with this code a bit more
1923 :			than what was strictly necessary... (I _did_ resist the tempation
1924 :			of doing any "global reformatting" to avoid an untimely death at
1925 :			Dave's hands. :)
1926 :
1927 :			- One positive aspect of the previous point: At least I made sure that
1928 :			all files that I touched now compile without warnings (other than
1929 :			"polyEqual").
1930 :
1931 :			- compiler now tends to run "leaner" (i.e., ties up less memory in
1932 :			redundant modmaps)
1933 :
1934 :			----------------------------------------------------------------------
1935 :	leunga	580	Name: Allen Leung
1936 :	leunga	585	Date: 2000/03/29 18:00:00
1937 :			Tag: leunga-20000327-mlriscGen_hppa_alpha_x86
1938 :	leunga	586	Boot files (optional): ftp://react-ilp.cs.nyu.edu/leunga/110.26.1-sml.boot.x86-unix-20000330.tar.gz
1939 :	leunga	585	Description:
1940 :
1941 :			This update contains *MAJOR* changes to the way code is generated from CPS
1942 :			in the module mlriscGen, and in various backend modules.
1943 :
1944 :			CHANGES
1945 :			=======
1946 :
1947 :			1. MLRiscGen: forward propagation fix.
1948 :
1949 :			There was a bug in forward propagation introduced at about the same time
1950 :			as the MLRISC x86 backend, which prohibits coalescing to be
1951 :			performed effectively in loops.
1952 :
1953 :			Effect: speed up of loops in RISC architectures.
1954 :			By itself, this actually slowed down certain benchmarks on the x86.
1955 :
1956 :			2. MLRiscGen: forward propagating addresses from consing.
1957 :
1958 :			I've changed the way consing code is generated. Basically I separated
1959 :			out the initialization part:
1960 :
1961 :			store tag, offset(allocptr)
1962 :			store elem1, offset+4(allocptr)
1963 :			store elem2, offset+8(allocptr)
1964 :			...
1965 :			store elemn, offset+4n(allocptr)
1966 :
1967 :			and the address computation part:
1968 :
1969 :			celladdr <- offset+4+alloctpr
1970 :
1971 :			and move the address computation part
1972 :
1973 :			Effect: register pressure is generally lower as a result. This
1974 :			makes compilation of certain expressions much faster, such as
1975 :			long lists with non-trivial elements.
1976 :
1977 :			[(0,0), (0,0), .... (0,0)]
1978 :
1979 :			3. MLRiscGen: base pointer elimination.
1980 :
1981 :			As part of the linkage mechanism, we generate the sequence:
1982 :
1983 :			L: ... <- start of the code fragment
1984 :
1985 :			L1:
1986 :			base pointer <- linkreg - L1 + L
1987 :
1988 :			The base pointer was then used for computing relocatable addresses
1989 :			in the code fragment. Frequently (such as in lots of continuations)
1990 :			this is not needed. We now eliminate this sequence whenever possible.
1991 :
1992 :			For compile time efficiency, I'm using a very stupid local heuristic.
1993 :			But in general, this should be done as a control flow analysis.
1994 :
1995 :			Effect: Smaller code size. Speed up of most programs.
1996 :
1997 :			4. Hppa back end
1998 :
1999 :			Long jumps in span dependence resolution used to depend on the existence
2000 :			of the base pointer.
2001 :
2002 :			A jump to a long label L was expanded into the following sequence:
2003 :
2004 :			LDIL %hi(L-8192), %r29
2005 :			LDO %lo(L-8192)(%r29), %r29
2006 :			ADD %r29, baseptr, %r29
2007 :			BV,n %r0(%r29)
2008 :
2009 :			In the presence of change (3) above, this will not work. I've changed
2010 :			it so that the following sequence of instructions are generated, which
2011 :			doesn't mention the base pointer at all:
2012 :
2013 :			BL,n L', %r29 /* branch and link, L' + 4 -> %r29 */
2014 :			L': ADDIL L-(L'+4), %r29 /* Compute address of L */
2015 :			BV,n %r0(%r29) /* Jump */
2016 :
2017 :			5. Alpha back end
2018 :
2019 :			New alpha instructions LDB/LDW have been added, as per Fermin's
2020 :			suggestions. This is unrelated to all other changes.
2021 :
2022 :			6. X86 back end
2023 :
2024 :			I've changed andl to testl in the floating point test sequence
2025 :			whenever appropriate. The Intel optimization guide states that
2026 :	monnier	659	testl is preferable to andl.
2027 :	leunga	585
2028 :			7. RA (x86 only)
2029 :
2030 :			I've improved the spill propagation algorithm, using an approximation
2031 :			of maximal weighted independent sets. This seems to be necessary to
2032 :			alleviate the negative effect in light of the slow down in (1).
2033 :
2034 :			I'll write down the algorithm one of these days.
2035 :
2036 :			8. MLRiscGen: frequencies
2037 :
2038 :			I've added an annotation that states that all call gc blocks have zero
2039 :			execution frequencies. This improves register allocation on the x86.
2040 :
2041 :			BENCHMARKS
2042 :			==========
2043 :
2044 :			I've only perform the comparison on 110.25.
2045 :
2046 :			The platforms are:
2047 :
2048 :			HPPA A four processor HP machine (E9000) with 5G of memory.
2049 :			X86 A 300Hhz Pentium II with 128M of memory, and
2050 :			SPARC An Ultra sparc 2 with 512M of memory.
2051 :
2052 :			I used the following parameters for the SML benchmarks:
2053 :
2054 :			@SMLalloc
2055 :			HPPA 256k
2056 :			SPARC 512k
2057 :			X86 256k
2058 :
2059 :			COMPILATION TIME
2060 :			----------------
2061 :			Here are the numbers comparing the compilation times of the compilers.
2062 :			I've only compared 110.25 compiling the new sources versus
2063 :			a fixpoint version of the new compiler compiling the same.
2064 :
2065 :			110.25 New
2066 :			Total Time in RA Spill+Reload Total Time In RA Spill+Reload
2067 :			HPPA 627s 116s 2684+3584 599s 95s 1003+1879
2068 :			SPARC 892s 173s 2891+3870 708s 116s 1004+1880
2069 :			X86 999s 315s 94006+130691 987s 296s 108877+141957
2070 :
2071 :			110.25 New
2072 :			Code Size Code Size
2073 :			HPPA 8596736 8561421
2074 :			SPARC 8974299 8785143
2075 :			X86 9029180 8716783
2076 :
2077 :			So in summary, things are at least as good as before. Dramatic
2078 :			reduction in compilation is obtained on the Sparc; I can't explain it,
2079 :			but it is reproducible. Perhaps someone should try to reproduce this
2080 :			on their own machines.
2081 :
2082 :			SML BENCHMARKS
2083 :			--------------
2084 :
2085 :			On the average, all benchmarks perform at least as well as before.
2086 :
2087 :			HPPA Compilation Time Spill+Reload Run Time
2088 :			110.25 New 110.25 New 110.25 New
2089 :
2090 :			barnesHut 3.158 3.015 4.75% 1+1 0+0 2.980 2.922 2.00%
2091 :			boyer 6.152 5.708 7.77% 0+0 0+0 0.218 0.213 2.34%
2092 :			count-graphs 1.168 1.120 4.32% 0+0 0+0 22.705 23.073 -1.60%
2093 :			fft 0.877 0.792 10.74% 1+3 1+3 0.602 0.587 2.56%
2094 :			knuthBendix 3.180 2.857 11.32% 0+0 0+0 0.675 0.662 2.02%
2095 :			lexgen 6.190 5.290 17.01% 0+0 0+0 0.913 0.788 15.86%
2096 :			life 0.803 0.703 14.22% 25+25 0+0 0.153 0.140 9.52%
2097 :			logic 2.048 2.007 2.08% 6+6 1+1 4.133 4.008 3.12%
2098 :			mandelbrot 0.077 0.080 -4.17% 0+0 0+0 0.765 0.712 7.49%
2099 :			mlyacc 22.932 20.937 9.53% 154+181 32+57 0.468 0.430 8.91%
2100 :			nucleic 5.183 5.060 2.44% 2+2 0+0 0.125 0.120 4.17%
2101 :			ratio-regions 3.357 3.142 6.84% 0+0 0+0 116.225 113.173 2.70%
2102 :			ray 1.283 1.290 -0.52% 0+0 0+0 2.887 2.855 1.11%
2103 :			simple 6.307 6.032 4.56% 28+30 5+7 3.705 3.658 1.28%
2104 :			tsp 0.888 0.862 3.09% 0+0 0+0 7.040 6.893 2.13%
2105 :			vliw 24.378 23.455 3.94% 106+127 25+45 2.758 2.707 1.91%
2106 :			--------------------------------------------------------------------------
2107 :			Average 6.12% 4.09%
2108 :
2109 :			SPARC Compilation Time Spill+Reload Run Time
2110 :			110.25 New 110.25 New 110.25 New
2111 :
2112 :			barnesHut 3.778 3.592 5.20% 2+2 0+0 3.648 3.453 5.65%
2113 :			boyer 6.632 6.110 8.54% 0+0 0+0 0.258 0.242 6.90%
2114 :			count-graphs 1.435 1.325 8.30% 0+0 0+0 33.672 34.737 -3.07%
2115 :			fft 0.980 0.940 4.26% 3+9 2+6 0.838 0.827 1.41%
2116 :			knuthBendix 3.590 3.138 14.39% 0+0 0+0 0.962 0.967 -0.52%
2117 :			lexgen 6.593 6.072 8.59% 1+1 0+0 1.077 1.078 -0.15%
2118 :			life 0.972 0.868 11.90% 26+26 0+0 0.143 0.140 2.38%
2119 :			logic 2.525 2.387 5.80% 7+7 1+1 5.625 5.158 9.05%
2120 :			mandelbrot 0.090 0.093 -3.57% 0+0 0+0 0.855 0.728 17.39%
2121 :			mlyacc 26.732 23.827 12.19% 162+189 32+57 0.550 0.560 -1.79%
2122 :			nucleic 6.233 6.197 0.59% 3+3 0+0 0.163 0.173 -5.77%
2123 :			ratio-regions 3.780 3.507 7.79% 0+0 0+0 133.993 131.035 2.26%
2124 :			ray 1.595 1.550 2.90% 1+1 0+0 3.440 3.418 0.63%
2125 :			simple 6.972 6.487 7.48% 29+32 5+7 3.523 3.525 -0.05%
2126 :			tsp 1.115 1.063 4.86% 0+0 0+0 7.393 7.265 1.77%
2127 :			vliw 27.765 24.818 11.87% 110+135 25+45 2.265 2.135 6.09%
2128 :			----------------------------------------------------------------------------
2129 :			Average 6.94% 2.64%
2130 :
2131 :			X86 Compilation Time Spill+Reload Run Time
2132 :			110.25 New 110.25 New 110.25 New
2133 :
2134 :			barnesHut 5.530 5.420 2.03% 593+893 597+915 3.532 3.440 2.66%
2135 :			boyer 8.768 7.747 13.19% 493+199 301+289 0.327 0.297 10.11%
2136 :			count-graphs 2.040 2.010 1.49% 298+394 315+457 26.578 28.660 -7.26%
2137 :			fft 1.327 1.302 1.92% 112+209 115+210 1.055 0.962 9.71%
2138 :			knuthBendix 5.218 5.475 -4.69% 451+598 510+650 0.928 0.932 -0.36%
2139 :			lexgen 9.970 9.623 3.60% 1014+841 1157+885 0.947 0.928 1.97%
2140 :			life 1.183 1.183 0.00% 162+182 145+148 0.127 0.103 22.58%
2141 :			logic 3.285 3.512 -6.45% 514+684 591+836 5.682 5.577 1.88%
2142 :			mandelbrot 0.147 0.143 2.33% 38+41 33+54 0.703 0.690 1.93%
2143 :			mlyacc 35.457 32.763 8.22% 3496+4564 3611+4860 0.552 0.550 0.30%
2144 :			nucleic 7.100 6.888 3.07% 239+168 201+158 0.175 0.173 0.96%
2145 :			ratio-regions 6.388 6.843 -6.65% 1182+257 981+300 120.142 120.345 -0.17%
2146 :			ray 2.332 2.338 -0.29% 346+398 402+494 3.593 3.540 1.51%
2147 :			simple 9.912 9.903 0.08% 1475+941 1579+1168 3.057 3.178 -3.83%
2148 :			tsp 1.623 1.532 5.98% 266+200 250+211 8.045 7.878 2.12%
2149 :			vliw 33.947 35.470 -4.29% 2629+2774 2877+3171 2.072 1.890 9.61%
2150 :			----------------------------------------------------------------------------
2151 :			Average 1.22% 3.36%
2152 :
2153 :			----------------------------------------------------------------------
2154 :			Name: Allen Leung
2155 :	leunga	583	Date: 2000/03/23 16:25:00
2156 :			Tag: leunga-20000323-fix_x86_alpha
2157 :			Description:
2158 :
2159 :			1. X86 fixes/changes
2160 :
2161 :			a. The old code generated for SETcc was completely wrong.
2162 :			The Intel optimization guide is VERY misleading.
2163 :
2164 :			2. ALPHA fixes/changes
2165 :
2166 :			a. Added the instructions LDBU, LDWU, STB, STW as per Fermin's suggestion.
2167 :			b. Added a new mode byteWordLoadStores to the functor parameter to Alpha()
2168 :			c. Added reassociation code for address computation.
2169 :
2170 :			----------------------------------------------------------------------
2171 :			Name: Allen Leung
2172 :	leunga	580	Date: 2000/03/22 01:23:00
2173 :			Tag: leunga-20000322-fix_x86_hppa_ra
2174 :			Description:
2175 :
2176 :			1. X86 fixes/changes
2177 :
2178 :			a. x86Rewrite bug with MUL3 (found by Lal)
2179 :			b. Added the instructions FSTS, FSTL
2180 :
2181 :			2. PA-RISC fixes/changes
2182 :
2183 :			a. B label should not be a delay slot candidate! Why did this work?
2184 :			b. ADDT(32, REG(32, r), LI n) now generates one instruction instead of two,
2185 :			as it should be.
2186 :			c. The assembly syntax for fstds and fstdd was wrong.
2187 :			d. Added the composite instruction COMICLR/LDO, which is the immediate
2188 :			operand variant of COMCLR/LDO.
2189 :
2190 :			3. Generic MLRISC
2191 :
2192 :			a. shuffle.sml rewritten to be slightly more efficient
2193 :			b. DIV bug in mltree-simplify fixed (found by Fermin)
2194 :
2195 :			4. Register Allocator
2196 :
2197 :			a. I now release the interference graph earlier during spilling.
2198 :			May improve memory usage.
2199 :
2200 :			----------------------------------------------------------------------
2201 :	blume	577	Name: Matthias Blume
2202 :	blume	578	Date: 2000/03/14 14:15:32
2203 :			Tag: blume_main_v110p26p1_2
2204 :			Description:
2205 :
2206 :			1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
2207 :			additional argument called "template" which is an optional string that
2208 :	monnier	659	specifies the layout of the tool command line. See the CM manual for
2209 :	blume	578	explanation.
2210 :
2211 :	monnier	659	2. A special-purpose tool can be "registered" by simply dropping the
2212 :	blume	578	corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
2213 :			directory where the .cm file lives that uses this tool. (The
2214 :			behavior/misfeature until now was to look for the tool description
2215 :			files in the current working directory.) As before, tool description
2216 :			files could also be anchored -- in which case they can live anywhere
2217 :			they like. Following the recent e-mail discussion, this change should
2218 :			make it easier to have special-purpose tools that are shipped together
2219 :			with the sources of the program that uses them.
2220 :
2221 :			----------------------------------------------------------------------
2222 :			Name: Matthias Blume
2223 :	blume	577	Date: 2000/03/10 07:48:34
2224 :			Tag: blume_main_v110p26p1_1
2225 :			Description:
2226 :
2227 :			I added a re-written version of Dave's fixpt script to src/system.
2228 :			Changes relative to the original version:
2229 :			- sh-ified (not everybody has ksh)
2230 :			- automatically figures out which architecture it runs on
2231 :			- uses ./makeml a bit more cleverly
2232 :			- never invokes ./installml (and, thus, does not clobber your
2233 :			good and working installation of sml in case something goes wrong)
2234 :			- accepts max iteration count using option "-iter <n>"
2235 :			- accepts a "base" name using option "-base <base>"
2236 :
2237 :			It does not build any extraneous heap images but directly rebuilds
2238 :			bin- and boot-hierarchies using makeml's "-rebuild" switch. Finally,
2239 :			it can incorporate existing bin- and boot- hierarchies. For example,
2240 :			suppose the base is set to "sml" (which is the default). Then it
2241 :			successively builds
2242 :
2243 :			sml.bin.<arch>-unix and sml.boot.<arch>-unix
2244 :			then sml1.bin.<arch>-unix and sml1.boot.<arch>-unix
2245 :			then sml2.bin.<arch>-unix and sml2.boot.<arch>-unix
2246 :			...
2247 :			then sml<n>.bin.<arch>-unix and sml<n>.boot.<arch>-unix
2248 :
2249 :			and so on. If any of these already exist, it will just use what's
2250 :			there. In particular, many people will have the initial set of bin
2251 :			and boot files around, so this saves time for at least one full
2252 :			rebuild. Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
2253 :			<k>=1,2,... is normally not a good idea when invoking fixpt. However,
2254 :			they might be the result of an earlier partial run of fixpt (which
2255 :	monnier	659	perhaps got accidentally killed). In this case, fixpt will quickly
2256 :	blume	577	move through what exists before continuing where it left off earlier,
2257 :			and, thus, saves a lot of time.
2258 :
2259 :			----------------------------------------------------------------------
2260 :	leunga	576	Name: Allen Leung
2261 :			Date: 00/03/10 02:20:00
2262 :			Tag: leunga-20000310-fix_x86_asm_ra
2263 :			Description:
2264 :	dbm	570
2265 :	leunga	576	More assembly output problems involving the indexed addressing mode
2266 :			on the x86 have been found and corrected. Thanks to Fermin Reig for the
2267 :			fix.
2268 :
2269 :			The interface and implementation of the register allocator have been changed
2270 :			slightly to accommodate the possibility to skip the register allocation
2271 :			phases completely and go directly to memory allocation. This is needed
2272 :			for C-- use.
2273 :
2274 :	dbm	570	----------------------------------------------------------------------
2275 :	blume	572	Name: Matthias Blume
2276 :	blume	575	Date: 00/03/09 10:23:53
2277 :			Tag: blume_main_v110p26p1_0
2278 :			Description:
2279 :
2280 :			* Complete re-organization of library names. Many libraries have been
2281 :			consolidated so that they share the same path anchor. For example,
2282 :			all MLRISC-related libraries are anchored at MLRISC, most libraries that
2283 :			are SML/NJ-specific are under "smlnj". Notice that names like
2284 :			host-cmb.cm or host-compiler.cm no longer exist. See system/README
2285 :			for a complete description of the new naming scheme. Quick reference:
2286 :
2287 :			host-cmb.cm -> smlnj/cmb.cm
2288 :			host-compiler.cm -> smlnj/compiler.cm
2289 :			full-cm.cm -> smlnj/cm.cm
2290 :			<arch>-<os>.cm -> smlnj/cmb/<arch>-<os>.cm
2291 :			<arch>-compiler.cm -> smlnj/compiler/<arch>.cm
2292 :
2293 :			* Bug fixes in CM.
2294 :			- exceptions in user code are being passed through (i.e., reach top level)
2295 :			- more bugs in paranoia mode fixed
2296 :			- bug related to checking group owners fixed
2297 :
2298 :			* New install.sh script that automagically fetches archive files:
2299 :			The new file config/srcarchiveurl must contain the URL of the
2300 :			(remote) directory that contains bin files (or other source archives).
2301 :			If install.sh does not find the archive locally, it tries to get
2302 :			it from that remote directory.
2303 :			This should simplify installation further: For machines that have
2304 :			access to the internet, just fetch <version>-config.tgz, unpack it,
2305 :	monnier	659	edit config/targets, and go (run config/install.sh). The script will
2306 :	blume	575	fetch everything else that it might need all by itself.
2307 :
2308 :			For CVS users, this mechanism is not relevant for source archives, but
2309 :			it is convenient for getting new sets of binfiles.
2310 :
2311 :			Archives should be tar files compressed with either gzip, compress, or
2312 :			bzip2. The script recognizes .tgz, .tar, tar.gz, tz, .tar.Z, and .tar.bz2.
2313 :
2314 :			----------------------------------------------------------------------
2315 :			Name: Matthias Blume
2316 :	blume	572	Date: 2000/03/07 04:01:04
2317 :			Tag: blume_main_v110_26_2
2318 :	dbm	570	Description:
2319 :	blume	572	- size info in BOOTLIST
2320 :			* no fixed upper limits for number of bootfiles or length of
2321 :			bootfile names in runtime
2322 :			* falling back to old behavior if no BOOTLIST size info found
2323 :			- allocation size heuristics in .run-sml
2324 :			* tries to read cache size from /proc/cpuinfo (this is important for
2325 :			small-cache Celeron systems!)
2326 :			- install.sh robustified
2327 :			- CM manual updates
2328 :			- paranoid mode
2329 :			* no more CMB.deliver() (i.e., all done by CMB.make())
2330 :			* can re-use existing sml.boot.* files
2331 :			* init.cmi now treated as library
2332 :			* library stamps for consistency checks
2333 :			- sml.boot.<arch>-<os>/PIDMAP file
2334 :			* This file is read by the CM startup code. This is used to minimize
2335 :			the amount of dynamic state that needs to be stowed away for the
2336 :			purpose of sharing between interactive system and user code.
2337 :			- CM.Anchor.anchor instead of CM.Anchor.{set,cancel}
2338 :			* Upon request by Elsa. Anchors now controlled by get-set-pair
2339 :			like most other CM state variables.
2340 :			- Compiler.CMSA eliminated
2341 :			* No longer supported by CM anyway.
2342 :			- fixed bugs in pickler that kept biting Stefan
2343 :			* past refs to past refs (was caused by the possibility that
2344 :			ad-hoc sharing is more discriminating than hash-cons sharing)
2345 :			* integer overflow on LargeInt.minInt
2346 :			- ml-{lex,yacc} build scripts now use new mechanism
2347 :			for building standalone programs
2348 :			- fixed several gcc -Wall warnings that were caused by missing header
2349 :			files, missing initializations, etc., in runtime (not all warnings
2350 :			eliminated, though)

---

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