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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 :	mblume	1931
11 :			Name: Your Name (web page or e-mail)
12 :	blume	2155	Date: yyyy/mm/dd hh:mm:ss
13 :	mblume	1931	Tag: cvs-tag-for-this-change
14 :	mblume	1480	Description:
15 :
16 :			----------------------------------------------------------------------
17 :	mblume	1923	Name: Matthias Blume (http://www.tti-c.org/blume/)
18 :	blume	2155	Date: 2006/11/02 12:20:00 CST
19 :			Description:
20 :
21 :			Reorganized directory layout.
22 :
23 :			This is a temporary solution, more reorganization is to come.
24 :
25 :			The basic idea is to have a number of toplevel trees, each corresponding
26 :			to a well-defined part of the overall system. Each part can be
27 :			maintained individually, even in separate source repositories,
28 :			although currently we still serve everything out of the main
29 :			smlnj-gforge tree.
30 :
31 :			Installer and and scripts have been updated to reflect the new
32 :			layout. The installer (base/src/system/smlnj/installer) is now
33 :			"scriptable" to avoid burning too much knowledge about the
34 :			layout into SML source code. The main script used by the installer
35 :			is in config/actions.
36 :
37 :			The main change is that many of the subdirectories of what used to
38 :			be known as "src" have moved to the toplevel. The "src" directory
39 :			itself has moved down into a subtree called "base". (We may eventually
40 :			get rid of the extra level of indirection represented by "src".)
41 :
42 :			The layout is now as follows:
43 :
44 :			toplevel tree name | default repository
45 :			| (using gf=svn://smlnj-gforge.cs.uchicago.edu/smlnj)
46 :			-------------------+----------------------------------------------------
47 :			config | $gf/config/trunk
48 :			|
49 :			base | $gf/sml/trunk
50 :			|
51 :			smlnj-lib | $gf/smlnj-lib/trunk
52 :			MLRISC | $gf/MLRISC/trunk
53 :			|
54 :			ml-yacc | $gf/ml-yacc/trunk
55 :			ml-lex | $gf/ml-lex/trunk
56 :			ml-burg | $gf/ml-burg/trunk
57 :			lexgen | $gf/lexgen/trunk
58 :			heap2asm | $gf/heap2asm/trunk
59 :			|
60 :			cml | $gf/cml/trunk
61 :			eXene | $gf/eXene/trunk
62 :			ckit | $gf/ckit/trunk
63 :			nlffi | $gf/nlffi/trunk
64 :			|
65 :			smlnj-c | $gf/smlnj-c/trunk
66 :
67 :			In $gf/admin there are a few useful shell scripts for checking out
68 :			and maintaining the entire collection of trees:
69 :
70 :			admin/checkout-all.sh [dir]
71 :			-- optionally creates dir and checks out all trees from their
72 :			default repositories; if dir is missing, checkout into .
73 :			admin/refresh-all.sh [dir]
74 :			-- looks at all trees (from the above list) in dir (default: .)
75 :			and runs "svn update" if the tree exists and is under
76 :			subversion control;
77 :			non-existing or non-subversion trees are skipped
78 :			admin/stat-all.sh [dir]
79 :			-- like refresh-all.sh, but runs "svn stat" instead
80 :
81 :			----------------------------------------------------------------------
82 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
83 :			Date: 2006/10/05 11:30:00 CDT
84 :	mblume	2066	Tag: blume-20061005-merge-amd64
85 :			Description:
86 :
87 :			Merged code for AMD64 backend (Mike Rainey's work).
88 :			Everything is hooked up but untested.
89 :
90 :			----------------------------------------------------------------------
91 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
92 :	mblume	1931	Date: 2006/05/17 14:00:00 CST
93 :			Tag: Release_110_59
94 :			Description:
95 :
96 :			New working version (110.58). NEW BOOTFILES!
97 :
98 :			I am freezing 110.59. Changes other than the version-number increase:
99 :
100 :			eXene:
101 :
102 :			* committed changes to eXene from Alley Stoughton:
103 :			"fixed bugs in X authorization and resource handling, as well
104 :			as in the pile and viewport widgets"
105 :
106 :			Runtime:
107 :			* fixed linking problem with NetBSD 3.x.
108 :
109 :			Lexgen:
110 :			* lexgen tool handles non-ascii characters in 7-bit mode the same
111 :			way that ml-lex does
112 :
113 :			* lexgen propagates exceptions the same way that ml-lex does
114 :
115 :			CML:
116 :			* Fixed a bug in the SyncVar polling functions (iGetPoll,
117 :			mTakePoll, and mGetPoll) that could lead to livelock.
118 :
119 :			----------------------------------------------------------------------
120 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
121 :	mblume	1926	Date: 2006/05/12 15:20:00 CST
122 :			Tag: blume-20060515-makedepend
123 :			Description:
124 :
125 :			Implemented ml-makedepend (i.e., CM.sources) in a better (more robust)
126 :			way. This should hopefully fix the ml-makedepend problem permanently.
127 :
128 :			----------------------------------------------------------------------
129 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
130 :	mblume	1925	Date: 2006/05/12 15:15:00 CST
131 :			Tag: blume-20060512-makedepend
132 :			Description:
133 :
134 :			Fixed long-standing bug with ml-makedepend where it would output a
135 :			spurious dependency to a non-existing file. (This is a simple fix.
136 :			It might need further looking into.)
137 :
138 :			----------------------------------------------------------------------
139 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
140 :	mblume	1923	Date: 2006/04/20 10:30:00 CDT
141 :			Tag: blume-20060420-heap2exec
142 :			Description:
143 :
144 :			Committed patches received from Johannes 5 Joemann (joemann@befree.free.de)
145 :			that enable heap2exec under Linux and FreeBSD.
146 :
147 :			----------------------------------------------------------------------
148 :	jhr	1921	Name: John Reppy
149 :			Date: 2006/04/14
150 :	blume	2155	Tag:
151 :	jhr	1921	Description:
152 :
153 :			MLRISC changes:
154 :			1) renamed GAS_PSEUDO_OPS to AS_PSEUDO_OPS and put it in its own file.
155 :			2) added support for NOTB and XORB operators in pseudo-op expressions
156 :			3) added DarwinPseudoOp functor that supports Darwin's assembler syntax.
157 :			4) added support for 64-bit integer literals
158 :
159 :			----------------------------------------------------------------------
160 :	jhr	1922	Name: Matthias Blume (http://www.tti-c.org/blume/)
161 :	mblume	1907	Date: yyyy/mm/dd
162 :			Tag: Release_110_58
163 :			Description:
164 :
165 :			New working version (110.58). NEW BOOTFILES!
166 :
167 :			----------------------------------------------------------------------
168 :	mblume	1896	Name: Matthias Blume (http://www.tti-c.org/blume/)
169 :	mblume	1905	Date: 2006/03/01 22:15:00 CST
170 :			Tag: blume-20060301-lexgen
171 :			Description:
172 :
173 :			Incorporated several bugfixes to lexgen. Compiler now compiles to
174 :			fixpoint when using lexgen instead of ml-lex.
175 :
176 :			----------------------------------------------------------------------
177 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
178 :	mblume	1902	Date: 2006/02/28 22:45:00 CST
179 :			Tag: blume-20060228-lexgen
180 :			Description:
181 :
182 :			Removed ml-flex and added lexgen instead, using Aaron Turon's newly
183 :			provided tarball. The generated lexers still have problems.
184 :
185 :			----------------------------------------------------------------------
186 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
187 :	mblume	1898	Date: 2006/02/26 23:30:00 CST
188 :			Tag: blume-20060226-ml-flex
189 :			Description:
190 :
191 :			Removed ml-flex' dependency on regexp-lib.cm. Turned installation
192 :			of ml-flex on by default.
193 :
194 :			----------------------------------------------------------------------
195 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
196 :	mblume	1896	Date: 2006/02/24 16:30:00 CST
197 :			Tag: blume-20060224-ml-flex
198 :			Description:
199 :
200 :			Added ml-flex sources. Partially integrated, but should not be
201 :			turned on yet! (Read: leave it commented-out in config/targets!)
202 :
203 :			----------------------------------------------------------------------
204 :	jhr	1893	Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
205 :			Date: 2006/02/23
206 :			Tag: jhr-20060223-x86-64
207 :			Description:
208 :			Changes to support building on x86-64 systems (using the 32-bit mode).
209 :			Also cleaned up signal handling on Linux. Support for pre-2.2 Linux
210 :			kernels dropped.
211 :
212 :			----------------------------------------------------------------------
213 :	allenleung	1890	Name: Allen Leung (leunga (at) reservoir (dot) com)
214 :			Date: 2006/02/22 15:07:00 EST
215 :			Tag: leunga-20060222-mdl-gen
216 :			Description:
217 :
218 :			CM has changed. Updated the script for rebuilding the MLRISC generated
219 :			files.
220 :
221 :			----------------------------------------------------------------------
222 :	mblume	1886	Name: Matthias Blume (http://www.tti-c.org/blume/)
223 :			Date: 2006/02/14 17:30:00 CST
224 :			Tag: blume-20060214-intel-mac
225 :			Description:
226 :
227 :			Hooked code for Darwin-specific Intel ABI into main compiler.
228 :			(This is a temporary solution which relies on the fact that the
229 :			compiler itself does not use NLFFI. Eventually we need to divorce
230 :			intel mac from generic x86 unix code and make separate sets of binaries.)
231 :
232 :			----------------------------------------------------------------------
233 :	jhr	1882	Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
234 :	jhr	1885	Date: 2006/02/13
235 :			Tag: jhr-20060213-intel-mac
236 :			Description:
237 :			Changed MLRISC x86 CCalls for partial support of MacOS X ABI.
238 :
239 :			----------------------------------------------------------------------
240 :			Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
241 :	jhr	1882	Date: 2006/02/06
242 :			Tag: jhr-20060206-intel-mac
243 :			Description:
244 :			Changes to support MacOS X on Intel hardware. The C-calls support in
245 :			MLRISC must also be updated to support the MacOS X ABI.
246 :
247 :			----------------------------------------------------------------------
248 :	mblume	1863	Name: Matthias Blume (http://www.tti-c.org/blume/)
249 :	mblume	1879	Date: 2005/12/16 00:15:00 CST
250 :			Tag: blume-20051216-cm
251 :			Description:
252 :
253 :			Improved error reporting and handling in CM.
254 :
255 :			----------------------------------------------------------------------
256 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
257 :	mblume	1878	Date: 2005/11/21 14:00:00 CST
258 :			Tag: blume-20051121-html-lib
259 :			Description:
260 :
261 :			Enabling $/html-lib.cm in config/preloads did not work. This is fixed
262 :			now. (Since the anchor mapping for html-lib.cm is not yet in effect
263 :	blume	2155	at the time when config/preloads is processed, the library has to
264 :	mblume	1878	be referred to by another name. In 110.57 this would be
265 :			$SMLNJ-LIB/HTML/html-lib.cm. I arranged for $smlnj/smlnj-lib/html-lib.cm
266 :			to be valid as well.)
267 :
268 :			Thanks to Todd Wilson (Fresno) for alerting me to this issue.
269 :
270 :			----------------------------------------------------------------------
271 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
272 :	mblume	1874	Date: 2005/11/19 13:45:00 CST
273 :			Tag: Release_110_57
274 :			Description:
275 :
276 :			Moved release tag for 110.57.
277 :
278 :			----------------------------------------------------------------------
279 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
280 :	mblume	1873	Date: 2005/11/19 23:35:00 CST
281 :			Tag: blume-20051119-fish
282 :			Description:
283 :
284 :			Fixed a problem in config/install.sh where it tries to "fish" the
285 :			name of the CM metadata directory from the wrong place (because
286 :			the physical location of basis.cm has changed). Also, corrected the
287 :			path anchor for $/html-lib.cm. (Thanks to M. Fluet for pointing out
288 :			these problems.)
289 :
290 :			----------------------------------------------------------------------
291 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
292 :	mblume	1867	Date: 2005/11/16 14:30:00 CST
293 :	mblume	1874	Tag: blume-orig-110_57
294 :	mblume	1867	Description:
295 :
296 :			New working version (110.57). NEW BOOTFILES!
297 :
298 :	mblume	1874	UPDATE: The release tag has been moved to include a fix for a brown-paper-
299 :			bag glitch (see above).
300 :
301 :	mblume	1867	----------------------------------------------------------------------
302 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
303 :	mblume	1866	Date: 2005/11/16 10:25:00 CST
304 :			Tag: blume-22051116-btrace
305 :			Description:
306 :
307 :			Fixed problem with bogus exception message when using back-trace
308 :			facility.
309 :
310 :			----------------------------------------------------------------------
311 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
312 :	mblume	1865	Date: 2005/11/15 22:35:00 CST
313 :			Tag: blume-22051115-array2copy
314 :			Description:
315 :
316 :			Added simple implementation of Array2.copy. (Warning: mostly untested.)
317 :
318 :			----------------------------------------------------------------------
319 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
320 :	mblume	1864	Date: 2005/11/15 21:35:00 CST
321 :			Tag: blume-22051115-versiontool
322 :			Description:
323 :
324 :			Reversed change to src/system/smlnj/internals/versiontool.cm. This
325 :			file gets loaded as a tool -- by the equivalent of CM.make during the
326 :			run of CMB.make. Thus, CMB's path configuration is meaningless for
327 :			it. Instead, it has the status of "user code", so it should use
328 :			$/basis.cm to refer to the Basis library. (At least that's true for
329 :			the purpose of bootstrapping the previous change. In the future it
330 :			might make sense to have versiontool.cm refer to
331 :			$smlnj/basis/basis.cm, i.e., the version of the Basis that the
332 :			compiler itself uses.)
333 :
334 :			Also patched src/system/testml to have it activate those extra anchor
335 :			bindings in config/extrapathconfig.
336 :
337 :			----------------------------------------------------------------------
338 :			Name: Matthias Blume (http://www.tti-c.org/blume/)
339 :	mblume	1863	Date: 2005/11/15 16:35:00 CST
340 :			Tag: blume-22051115-libraries
341 :			Description:
342 :
343 :			This change affects the way the following libraries are tied into
344 :			the system:
345 :
346 :			$/basis.cm
347 :			$/smlnj-lib.cm
348 :			$/pp-lib.cm
349 :			$/controls-lib.cm
350 :			$/html-lib.cm
351 :			$/ml-yacc-lib.cm
352 :
353 :			These libraries are now internally (as seen from the source code
354 :			of the implementation itself) known by the following names:
355 :
356 :			$smlnj/basis/basis.cm
357 :			$smlnj/smlnj-lib/smlnj-lib.cm
358 :			$smlnj/smlnj-lib/pp-lib.cm
359 :			$smlnj/smlnj-lib/controls-lib.cm
360 :			$smlnj/smlnj-lib/html-lib.cm
361 :			$smlnj/ml-yacc/ml-yacc-lib.cm
362 :
363 :			This makes it possible to work with code that requires different
364 :			versions of these libraries, and which refers to these libraries using
365 :			their "default" names (i.e., the first set of names above). In other
366 :			words, one can un-define or re-define those default names without
367 :			compromising the proper functioning of the compiler itself.
368 :
369 :			A similar procedure had already been performed for several of the
370 :			MLRISC libraries that are linked into the compiler. I did some
371 :			cleanup on this code.
372 :
373 :			A new file in the config directory (named extrapathconfig) is
374 :			responsible for setting up path anchors that the compiler itself does
375 :			not need, but that are typically required by user code.
376 :
377 :			----------------------------------------------------------------------
378 :	mblume	1862	Name: Matthias Blume
379 :			Date: 2005/11/07 17:05:00 CST
380 :			Tag: blume-20051107-slice
381 :			Description:
382 :
383 :			Fixed erroneous out-of-bounds test in the "update" function of
384 :			various *ArraySlice modules. (Thanks to Vesa A. Norrman for pointing
385 :			out the problem.)
386 :
387 :			Pushed some Basis changes through ML-Lex, CML, and eXene.
388 :
389 :			----------------------------------------------------------------------
390 :	jhr	1858	Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
391 :	jhr	1861	Date: 2005/11/07
392 :			Description:
393 :			Fixed a Basis incompatibility: The depreciated function Substring.all
394 :			was removed (use Substring.full instead).
395 :
396 :			----------------------------------------------------------------------
397 :			Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
398 :	jhr	1858	Date: 2005/11/05
399 :			Description:
400 :			Tweaked interval set API in SML/NJ library; see the CHANGES file for details.
401 :
402 :			----------------------------------------------------------------------
403 :	mblume	1856	Name: Matthias Blume (http://www.tti-c.org/blume/)
404 :			Date: 2005/11/02 16:25:00 CST
405 :			Tag: blume-20051102-hex
406 :			Description:
407 :
408 :			* Runtime system bootstrap code now accepts hex digits in BOOTLIST
409 :			in either upper case or lower case format.
410 :			* Pushed changes to names of Pack<N>{Big,Little} structures through
411 :			CML and eXene.
412 :
413 :			----------------------------------------------------------------------
414 :	jhr	1852	Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
415 :	jhr	1855	Date: 2005/11/02
416 :			Description:
417 :			Fixed a Basis incompatibility: Pack<N>{Big,Little} structures should
418 :			be called PackWord<N>{Big,Little}.
419 :
420 :			----------------------------------------------------------------------
421 :			Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
422 :	jhr	1852	Date: 2005/10/28
423 :			Description:
424 :			Fixed a minor Basis incompatibility: hex digits should be upper case.
425 :
426 :			----------------------------------------------------------------------
427 :	mblume	1846	Name: Matthias Blume (blume (at) tti - c (dot) org)
428 :			Date: 2005/10/25 16:00:00 CDT
429 :			Tag: Release_110_56
430 :			Description:
431 :
432 :			New working version (110.56). NEW BOOTFILES!
433 :
434 :			----------------------------------------------------------------------
435 :	jhr	1838	Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
436 :	jhr	1840	Date: 2005/10/25
437 :			Description:
438 :			Added interval sets to utility library (signatures INTERVAL_DOMAIN
439 :			and INTERVAL_SET, and functor IntervalSetFn).
440 :
441 :			----------------------------------------------------------------------
442 :			Name: John Reppy (http://www.cs.uchicago.edu/~jhr)
443 :	jhr	1838	Date: 2005/10/14
444 :			Description:
445 :			Add Zhong Shao's fix for datatype equality functions.
446 :
447 :			----------------------------------------------------------------------
448 :	allenleung	1836	Name: Allen Leung (leunga (at) reservoir (dot) com)
449 :	allenleung	1837	Date: 2005/10/14 12:30:00 EST
450 :			Tag: leunga-20051014-x86-spill
451 :			Description:
452 :
453 :			Bug fix a bug found by Carl Hauser.
454 :			There was a typo in the reload code for FCMP in x86SpillInstr.sml.
455 :
456 :			----------------------------------------------------------------------
457 :			Name: Allen Leung (leunga (at) reservoir (dot) com)
458 :	allenleung	1836	Date: 2005/10/14 11:15:00 EST
459 :			Tag: leunga-20051014-x86-asm
460 :			Description:
461 :
462 :			Removed some debugging code in file x86Asm.sml.
463 :			The function emit_operand was printing out debugging output.
464 :
465 :			----------------------------------------------------------------------
466 :	jhr	1813	Name: John Reppy
467 :	jhr	1831	Date: 2005/07/27
468 :			Tag:
469 :			Description:
470 :
471 :	jhr	1832	Fixed ml-lex to recognize "\r" as representing carriage return.
472 :
473 :			----------------------------------------------------------------------
474 :			Name: John Reppy
475 :			Date: 2005/07/27
476 :			Tag:
477 :			Description:
478 :
479 :	jhr	1831	Fixed ml-yacc to work on files with non-native end-of-line
480 :			encodings (e.g., Windows text file on a Unix system).
481 :
482 :			----------------------------------------------------------------------
483 :			Name: John Reppy
484 :	jhr	1824	Date: 2005/07/20
485 :			Tag:
486 :			Description:
487 :
488 :			Added changes from Dominic Evans (oldmanuk (at) gmail (dot) com)
489 :			to support HPUX 11.
490 :
491 :			----------------------------------------------------------------------
492 :			Name: John Reppy
493 :	jhr	1813	Date: 2005/07/06
494 :			Tag:
495 :			Description:
496 :
497 :			Changes to the SML/NJ library. See smlnj-lib/CHANGES for details.
498 :
499 :			----------------------------------------------------------------------
500 :	mblume	1808	Name: Matthias Blume (blume (at) tti - c (dot) org)
501 :			Date: 2005/07/06 00:45:00 CDT
502 :			Tag: blume-20050706-slice-copy
503 :			Description:
504 :
505 :			Fixed reversed logic for deciding whether to "copy up" or "copy down"
506 :			in *-array-slice.sml.
507 :
508 :			----------------------------------------------------------------------
509 :	allenleung	1806	Name: Allen Leung (leunga (at) reservoir (dot) com)
510 :	allenleung	1807	Date: 2005/05/31 17:00:00 EST
511 :			Tag: leunga-20050531-cygwin-fault-2
512 :			Description:
513 :
514 :			A typo in the cygwin code fixed.
515 :
516 :			----------------------------------------------------------------------
517 :			Name: Allen Leung (leunga (at) reservoir (dot) com)
518 :	allenleung	1806	Date: 2005/05/31 16:47:00 EST
519 :			Tag: leunga-20050531-cygwin-fault
520 :			Description:
521 :
522 :	blume	2155	Updated Cygwin's fault/signal handling to match the Windows version.
523 :	allenleung	1806	Updated the export list.
524 :
525 :			----------------------------------------------------------------------
526 :	mblume	1791	Name: Matthias Blume (blume (at) tti - c (dot) org)
527 :	mblume	1795	Date: 2005/05/18 13:35:00 CDT
528 :			Tag: Release_110_54
529 :			Description:
530 :
531 :			New working version (110.54). NEW BOOTFILES!
532 :
533 :			----------------------------------------------------------------------
534 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
535 :	mblume	1794	Date: 2005/05/18 11:58:00 CDT
536 :			Tag: blume-20050518-installer
537 :			Description:
538 :
539 :			Added support scripts for Mac OS X PackageMaker and modified
540 :			config/install.sh so that it supports re-dumping a heap image
541 :			after customization.
542 :
543 :			----------------------------------------------------------------------
544 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
545 :	mblume	1793	Date: 2005/05/18 10:55:00 CDT
546 :			Tag: blume-20050518-realdiv-noovld
547 :			Description:
548 :
549 :			Un-overloaded / to work around bug in overloading resolution code.
550 :
551 :			----------------------------------------------------------------------
552 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
553 :	mblume	1792	Date: 2005/05/16 23:50:00 CDT
554 :			Tag: blume-20050516-redump-heap
555 :			Description:
556 :
557 :			Added mechanism for re-creating a heap file for the interactive system
558 :			after configuration variables have been changed.
559 :
560 :			CM.redump_heap : string -> unit
561 :
562 :			This is much like SMLofNJ.exportML, but starting from the resulting
563 :	blume	2155	heap does not return to the caller of CM.redump_heap but
564 :	mblume	1792	restarts the interactive system from scratch. The original call of
565 :			CM.redump_heap does not return but ends the interactive session.
566 :			Thus, CM.redump_heap is a lot like SMLofNJ.exportFn.
567 :
568 :			Internally, redump_heap winds the dynamic execution context back to
569 :			the point where the original heap image was created and re-executes
570 :			the heap image generation code in the boot code.
571 :
572 :			----------------------------------------------------------------------
573 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
574 :	mblume	1791	Date: 2005/05/09 21:55:00 CDT
575 :			Tag: blume-20050509-word64
576 :			Description:
577 :
578 :			Added a hack to the existing hack known as Word64 to make fromString
579 :			behave correctly. I am still not sure whether Word64.scan will work
580 :			as specified with respect to the interaction of radix and prefix.
581 :
582 :			----------------------------------------------------------------------
583 :	allenleung	1785	Name: Allen Leung (leunga (at) reservoir (dot) com)
584 :			Date: 2005/05/04 11:50:00 EST
585 :			Tag: leunga-20050504-checkgc
586 :			Description:
587 :
588 :	blume	2155	Added a gc protocol checking phase. This phase is enabled with
589 :	allenleung	1785	the flag "check-gc". "debug-check-gc" turns on the verbose mode.
590 :
591 :			----------------------------------------------------------------------
592 :	mblume	1741	Name: Matthias Blume (blume (at) tti - c (dot) org)
593 :	mblume	1784	Date: 2005/05/04 10:45:00 CDT
594 :			Tag: blume-20050504-intinf
595 :			Description:
596 :
597 :			Fixed a bug in the implementation of div and mod for IntInf.
598 :			Thanks to Neophytos Michael for reporting the problem.
599 :
600 :			----------------------------------------------------------------------
601 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
602 :	mblume	1783	Date: 2005/05/04 10:35:00 CDT
603 :			Tag: blume-20050504-join
604 :			Description:
605 :
606 :			Added a "join" combinator to the ParserComb module in smlnj-lib.cm.
607 :
608 :			----------------------------------------------------------------------
609 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
610 :	mblume	1770	Date: 2005/02/28 23:40:00 CST
611 :			Tag: blume-20050228-mVar
612 :			Description:
613 :
614 :			Fixed serious bug (brown paper bag variety) in new implementation of
615 :			structure Atom in CML. (I had accidentally used a mailbox instead of
616 :			an mvar, leaving the door open for races.)
617 :
618 :			----------------------------------------------------------------------
619 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
620 :	mblume	1761	Date: 2005/02/25 15:00:00 CST
621 :			Tag: Release_110_53
622 :			Description:
623 :
624 :			New working version (110.53). NEW BOOTFILES!
625 :
626 :			----------------------------------------------------------------------
627 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
628 :	mblume	1760	Date: 2005/02/25 14:50:00 CST
629 :			Tag: blume-20050225-susp
630 :			Description:
631 :
632 :			Brought back SMLofNJ.Susp. The underlying suspension type is the one
633 :			implemented in Core -- which means that it is the same as the one used
634 :			by the lazy extension.
635 :
636 :			----------------------------------------------------------------------
637 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
638 :	mblume	1759	Date: 2005/02/24 16:50:00 CST
639 :			Tag: blume-20050224-cml-atom
640 :			Description:
641 :
642 :			Simpler and at the same time more general implementation of structure
643 :			Atom in CML.
644 :
645 :			----------------------------------------------------------------------
646 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
647 :	mblume	1758	Date: 2005/02/15 17:35:00 CST
648 :			Tag: blume-20050215-tools
649 :			Description:
650 :
651 :			Created new "tools" directory under "src" and moved "TraceDebugProf"
652 :			there.
653 :
654 :			----------------------------------------------------------------------
655 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
656 :	mblume	1755	Date: 2005/02/10 17:55:00 CST
657 :			Tag: blume-20050210-longlong
658 :			Description:
659 :
660 :			Implemented "long long" arguments and results for NLFFI. (Only the
661 :			PPC/MacOS implementation is complete, the other backends still need to
662 :			be updated.)
663 :
664 :			----------------------------------------------------------------------
665 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
666 :	mblume	1751	Date: 2005/01/24 17:40:00 CST
667 :			Tag: blume-20050124-mlyacc
668 :			Description:
669 :
670 :			Minor cleanup in ML-Yacc rule printing mechanism. This should fix a
671 :			problem with certain "as" patterns which previously got rendered
672 :			using incorrect syntax.
673 :
674 :			----------------------------------------------------------------------
675 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
676 :	mblume	1750	Date: 2005/01/18 12:00:00 CST
677 :			Tag: blume-20050118-profile
678 :			Description:
679 :
680 :			Made time profiling code (interrupt handler) in runtime system aware
681 :			of new array representation.
682 :
683 :			----------------------------------------------------------------------
684 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
685 :	mblume	1747	Date: 2005/01/14 18:00:00 CST
686 :			Tag: blume-20050114-heap2exec
687 :			Description:
688 :
689 :			Implemented new (but still experimental) heap2exec facility. This is
690 :			tested under Mac OS X and should work under Linux (will test shortly).
691 :			It will probably also work on the Sparc (will test some time later).
692 :
693 :			- removed old "HACKED_STANDALONE" hack from runtime
694 :
695 :			To be able to test this, uncomment the request for "heap2asm" in
696 :			config/targets prior to installation. (Notice that this is different
697 :			from "heap2exec" mentioned below. Not a typo.)
698 :
699 :			To perform an actual test, run the command
700 :
701 :			$ bin/heap2exec heapfile execfile
702 :
703 :			(You can put heap2exec on your shell's path.)
704 :
705 :			For example, run
706 :
707 :			$ bin/heap2exec bin/.heap/ml-yacc.ppc-darwin mly
708 :
709 :			This will create a standalone executable called "mly" which you can
710 :			then invoke directly as a command.
711 :
712 :			----------------------------------------------------------------------
713 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
714 :	mblume	1746	Date: 2005/01/07 11:44:00 CST
715 :			Tag: blume-20050107-mlstring
716 :			Description:
717 :
718 :			fixed off-by-one error in ML_STRING macro (globals.c)
719 :
720 :			----------------------------------------------------------------------
721 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
722 :	mblume	1744	Date: 2004/12/23 18:00:00 CST
723 :			Tag: blume-20041223-santa
724 :			Description:
725 :
726 :			Made ml-build script "smarter" (but only very little).
727 :
728 :			----------------------------------------------------------------------
729 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
730 :	mblume	1742	Date: 2004/12/21 15:05:00 CST
731 :			Tag: blume-20041221-longlong
732 :			Description:
733 :
734 :			* Implemented access to signed and unsigned long long data in NLFFI.
735 :			(The parameter-passing part of the picture has not complete. But
736 :			data structure access seems to work.)
737 :
738 :			* Fixed CM's incorrect assumption that the PPC is little-endian.
739 :			(On the Mac, it is big-endian. And that's currently our only
740 :			PPC platform.)
741 :
742 :			----------------------------------------------------------------------
743 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
744 :	mblume	1741	Date: 2004/12/21 12:50:00 CST
745 :			Tag: blume-20041221-memory
746 :			Description:
747 :
748 :			Some cleanup in the $c/memory.cm library: separated some concerns by
749 :			moving allocation code and memory access code each into their own
750 :			files.
751 :
752 :			----------------------------------------------------------------------
753 :	allenleung	1740	Name: Allen Leung (leunga (at) reservoir (dot) com)
754 :			Date: 2004/12/17 16:12:00 EST
755 :			Tag: leunga-20041217-cygwin-smlnj-home
756 :			Description:
757 :
758 :	blume	2155	The Unix I/O library of SML/NJ on cygwin does not understand
759 :			Windows style pathname, so problems arise when SMLNJ_HOME is set
760 :			to a Windows style pathname. _run-sml now converts SMLNJ_HOME
761 :			to a POSIX pathname on cygwin.
762 :	allenleung	1740
763 :			----------------------------------------------------------------------
764 :	mblume	1737	Name: Matthias Blume (blume (at) tti - c (dot) org)
765 :	mblume	1736	Date: 2004/12/16 13:35:00 CST
766 :			Tag: Release_110_52
767 :			Description:
768 :
769 :			Last-minute changes incorporated into 110.52. Release tag moved.
770 :
771 :			The changes:
772 :			- HashString.hashString' -> HashString.hashSubstring
773 :			- bug fix in UnivariateStats
774 :
775 :			----------------------------------------------------------------------
776 :	mblume	1702	Name: Matthias Blume (blume (at) tti - c (dot) org)
777 :	mblume	1733	Date: 2004/12/15 23:40:00 CST
778 :			Tag: blume-20041215-hashSubstring
779 :			Description:
780 :
781 :			- HashString.hashString' -> HashString.hashSubstring
782 :			- corresponding changes in atom.sml
783 :			- "de-compressed" (aka. un-obfuscated) code for UnivariateStats and
784 :			added some comments
785 :
786 :			----------------------------------------------------------------------
787 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
788 :	mblume	1728	Date: 2004/12/15 15:30:00 CST
789 :	mblume	1736	Tag: (Release_110_52)
790 :	mblume	1728	Description:
791 :
792 :			New working version (110.52). NEW BOOTFILES!
793 :
794 :			----------------------------------------------------------------------
795 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
796 :	mblume	1727	Date: 2004/12/15 12:45:00 CST
797 :			Tag: blume-20041215-spaces
798 :			Description:
799 :
800 :			More on the space problem (this time for Win32).
801 :
802 :			----------------------------------------------------------------------
803 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
804 :	mblume	1725	Date: 2004/12/14 17:30:00 CST
805 :			Tag: blume-20041214-spaces
806 :			Description:
807 :
808 :			Hacked some of the scripts (in particular: the installer) to cope with
809 :			spaces in filenames a bit better. But beware: the current "solution"
810 :			is likely still full of bugs and inherently incomplete. (We need to
811 :			do away with those shell scripts for a comprehensive solution.)
812 :
813 :			----------------------------------------------------------------------
814 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
815 :	mblume	1724	Date: 2004/12/13 14:45:00 CST
816 :			Tag: blume-20041213-ml-makedepend
817 :			Description:
818 :
819 :			Fixed bug in code for ml-makedepend.
820 :
821 :			----------------------------------------------------------------------
822 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
823 :	mblume	1720	Date: 2004/12/09 16:30:00 CST
824 :			Tag: blume-20041209-statistics
825 :			Description:
826 :
827 :			Added two simple but potentially useful statistics modules to SML/NJ Library.
828 :			(See CHANGES file there.)
829 :
830 :			----------------------------------------------------------------------
831 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
832 :	mblume	1718	Date: 2004/12/01 16:50:00 CST
833 :			Tag: blume-20041201-atom
834 :			Description:
835 :
836 :			smlnj-lib:
837 :
838 :			Added function HashString.hashString' for substrings.
839 :			Hand-inlined CharVector.foldl into HashString (for speed).
840 :			Modified implementation of structure Atom to avoid extracting
841 :			strings from substrings unless necessary.
842 :			(Also see CHANGES file for smlnj-lib.)
843 :
844 :			----------------------------------------------------------------------
845 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
846 :	mblume	1717	Date: 2004/11/24 22:15:00 CST
847 :			Tag: blume-20041124-cml
848 :			Description:
849 :
850 :			Made sure CML compiles when Position = Int64.
851 :
852 :			----------------------------------------------------------------------
853 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
854 :	mblume	1715	Date: 2004/11/24 14:30:00 CST
855 :			Tag: blume-20041124-position
856 :			Description:
857 :
858 :			The compiler can now be compiled in a mode that makes structure Position
859 :			equal to Int64. The default, however, is unchanged (Position = Int31)
860 :			for the time being.
861 :
862 :			To enable 64-bit positions, use the following procedure:
863 :
864 :			1. Start sml
865 :			2. Autoload $smlnj/cmb.cm (if not already autoloaded)
866 :			3. Type
867 :			#set (CMB.symval "USE_64_BIT_POSITIONS") (SOME 1);
868 :			4. Run CMB.make() as usual.
869 :
870 :			This is barely tested. The only test so far was a little SML program
871 :			counting the number of characters in an 8-gigabyte file by
872 :			reading it character-by-character. That test was successful.
873 :
874 :			In support of 64-bit positions, a number of new functions have been
875 :			added to the runtime system.
876 :
877 :			----------------------------------------------------------------------
878 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
879 :	mblume	1716	Date: 2004/11/23 14:45:00 CST
880 :			Tag: blume-20041123-useFile
881 :	mblume	1712	Description:
882 :
883 :			Fixed a problem with unhelpful error messages related to problems with
884 :			.cm- or .sml files that appear as part of the sml command line.
885 :
886 :			----------------------------------------------------------------------
887 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
888 :	mblume	1703	Date: 2004/11/18 15:40:00 CST
889 :			Tag: Release_110_51
890 :			Description:
891 :
892 :			New working version (110.51). NEW BOOTFILES!
893 :
894 :			----------------------------------------------------------------------
895 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
896 :	mblume	1702	Date: 2004/11/18 15:35:00 CST
897 :			Tag: <none>
898 :			Description:
899 :
900 :			Enabled dlopen and friends for FreeBSD (as recommended by Johannes 5
901 :			Joemann).
902 :
903 :			----------------------------------------------------------------------
904 :	allenleung	1701	Name: Allen Leung (leunga (at) reservoir (dot) com)
905 :			Date: 2004/11/17 16:05:21 EST 2004
906 :			Tag: leunga-20041117-mlrisc-live-kill
907 :			Description:
908 :
909 :	blume	2155	Added support for MLTree constructs LIVE and KILL
910 :	allenleung	1701	to all the architectures.
911 :
912 :			----------------------------------------------------------------------
913 :	mblume	1687	Name: Matthias Blume (blume (at) tti - c (dot) org)
914 :	mblume	1689	Date: 2004/11/13 00:20:00 CST
915 :			Tag: blume-20041113-versiontool
916 :			Description:
917 :
918 :			- Stripped down the versiontool: It now only handles the version number.
919 :			The date string is generated at bootstrap time (during makeml).
920 :
921 :			- In a previous commit, fixed a minor issue with how polyequal is being
922 :			translated. In particular, the code now "looks through" abstractions.
923 :			This results in slightly fewer polyEqual warnings and hopefully slightly
924 :			more efficient code. Important examples for where this matters are
925 :			the new int64 and word64 types.
926 :
927 :			----------------------------------------------------------------------
928 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
929 :	mblume	1687	Date: 2004/11/12 00:30:00 CST
930 :			Tag: blume-20041112-int64
931 :			Description:
932 :
933 :			Structure Int64 fully hooked in. (The implementation is not very
934 :			efficient, though.)
935 :
936 :			----------------------------------------------------------------------
937 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
938 :	mblume	1686	Date: 2004/11/11 17:30:00 CST
939 :			Tag: blume-20041111-more64
940 :			Description:
941 :
942 :			All the pieces of Word64 are now there, with the exception of the
943 :			conversions from and to LargeWord. (Eventually these need to be identities,
944 :			but for the time being they don't even make sense because LargeWord is
945 :			32-bit wide.)
946 :
947 :			Also started to add similar support for Int64, but major pieces of that
948 :			are still missing.
949 :
950 :			----------------------------------------------------------------------
951 :	mblume	1668	Name: Matthias Blume (blume (at) tti - c (dot) org)
952 :	mblume	1684	Date: 2004/11/11 00:15:00 CST
953 :			Tag: blume-20041111-word64
954 :			Description:
955 :
956 :			Structure Word64 is now (almost) complete, word literals and patterns
957 :			seem to work. There are a few odd pieces missing. In particular,
958 :			I didn't do the {from,to}LargeWord parts because LargeWord is still Word32
959 :			at the moment.
960 :
961 :			Making Word64 official would mean that LargeWord becomes Word64. But
962 :			this requires extreme care because most word-word conversions have to
963 :			go through LargeWord, so making a mistake means loss of efficiency or
964 :			worse. Eventually there will be a solution similar to (but actually
965 :			simpler than) what I did with IntInf.
966 :
967 :			----------------------------------------------------------------------
968 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
969 :	mblume	1683	Date: 2004/11/10 18:12:00 CST
970 :			Tag: blume-20041110-64bit
971 :			Description:
972 :
973 :			More 64-bit hacking (but still not even half-way there yet).
974 :			Also, some assorted improvements to the handling of 8-bit words.
975 :
976 :			----------------------------------------------------------------------
977 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
978 :	mblume	1682	Date: 2004/11/09 17:50:00 CST
979 :	mblume	1683	Tag: <none>
980 :	mblume	1682	Description:
981 :
982 :			Started adding some infrastructure for supporting 64-bit int- and
983 :			word-types. (Still in its very early stages.)
984 :
985 :			----------------------------------------------------------------------
986 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
987 :	mblume	1672	Date: 2004/10/28 10:45:00 CDT
988 :			Tag: Release_110_50
989 :			Description:
990 :
991 :			New working version (110.50). NEW BOOTFILES!
992 :
993 :			=====================
994 :
995 :			Also:
996 :
997 :			- Changend config/srcarchiveurl from a file just
998 :			containing the URL string into a file containing
999 :			shell script code. The code has access to the $VERSION variable.
1000 :			- Made corresponding changes to config/install.sh and config/unpack.
1001 :			- Default contents of config/srcarchiveurl uses $VERSION and
1002 :			normally does not have to be edited to reflect a version change.
1003 :
1004 :			(As a result, a version change can be done by just editing
1005 :			config/version, the rest is now automatic.)
1006 :
1007 :			----------------------------------------------------------------------
1008 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1009 :	mblume	1669	Date: 2004/10/27 17:50:00 CDT
1010 :			Tag: blume-20041027-btrace-msg
1011 :			Description:
1012 :
1013 :			BackTrace.monitor now also reports the source of the exception that
1014 :			triggered the trace.
1015 :
1016 :			----------------------------------------------------------------------
1017 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1018 :	mblume	1668	Date: 2004/10/27 17:20:00 CDT
1019 :			Tag: blume-20041027-x86-c-calls
1020 :			Description:
1021 :
1022 :			This is the HISTORY entry for two earlier commits, both concerning
1023 :			the x86 c-calls code in MLRISC:
1024 :
1025 :			- added a missing LOAD in the code that deals with struct arguments
1026 :			- made sure the caller does not add the wrong number of bytes to the
1027 :			stack pointer after a call of a function returning a struct
1028 :			(the callee already pops the implicit argument which points to
1029 :			the space reserved for the result)
1030 :
1031 :			----------------------------------------------------------------------
1032 :	allenleung	1662	Name: Allen Leung (leunga (at) reservoir (dot) com)
1033 :			Date: 2004/10/24 14:00:00 EST
1034 :			Tag: leunga-20041024-x86-gas-fucomip
1035 :			Description:
1036 :
1037 :			John discovered a bug in the syntax of fucomip.
1038 :			The opcodes FU?COMIP? have been changed to
1039 :
1040 :			fu?comip? %st(i), %st
1041 :
1042 :			----------------------------------------------------------------------
1043 :	mblume	1622	Name: Matthias Blume (blume (at) tti - c (dot) org)
1044 :	mblume	1656	Date: 2004/10/20 15:06:00 CDT
1045 :			Tag: blume-20041020-standalone-backtrace
1046 :			Description:
1047 :
1048 :			Added a mechanism for getting back-trace information from standalone
1049 :			programs. Here is how it works:
1050 :
1051 :			1. The part of the program from which you want to get backtrace
1052 :			information (usually the whole program) should be wrapped with
1053 :			BackTrace.monitor. This is a (unit->'a)->'a function, and your
1054 :			main program could be modified from something like
1055 :
1056 :			fun main (pgm, args) = ...
1057 :
1058 :			to
1059 :
1060 :			fun main (pgm, args) = BackTrace.monitor (fn () => ...)
1061 :
1062 :			2. To be able to access BackTrace.monitor, you have to add
1063 :			library $smlnj-tdp/plugins.cm to the .cm file that contains your
1064 :			main function.
1065 :
1066 :			3. Remove all compiled code (i.e., all the .cm/ subdirectories that
1067 :			CM might have created in the past for your project).
1068 :
1069 :			4. Build the system using this command line:
1070 :
1071 :			ml-build -Ctdp.instrument=true \$smlnj-tdp/back-trace.cm \
1072 :			myprog.cm MyProg.main myprog
1073 :
1074 :			instead of the usual
1075 :
1076 :			ml-build myprog.cm MyProg.main myprog
1077 :
1078 :			I changed a library name:
1079 :
1080 :			$/trace-debug-profile.cm --> $smlnj-tdp/plugins.cm
1081 :
1082 :			New libraries:
1083 :
1084 :			$smlnj-tdp/back-trace.cm
1085 :			-- when loaded causes the back-trace plugin to be installed
1086 :			$smlnj-tdp/coverage.cm
1087 :			-- when loaded causes the coverage plugin to be installed
1088 :
1089 :			----------------------------------------------------------------------
1090 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1091 :	mblume	1655	Date: 2004/10/18 16:45:00 CDT
1092 :			Tag: blume-20041018-groupowner
1093 :			Description:
1094 :
1095 :			Added an "obsolete" warning for the "group owner" syntax to CM's parser.
1096 :
1097 :			Eliminated group owner specs from .cm files throughout the source tree.
1098 :
1099 :			----------------------------------------------------------------------
1100 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1101 :	mblume	1653	Date: 2004/10/15 15:45:00 CDT
1102 :			Tag: blume-20041015-coverage
1103 :			Description:
1104 :
1105 :			* Test coverage tool added!
1106 :			* Further reorganization of tracing-, debugging-, and profiling support:
1107 :
1108 :			- moved original BTImp -- now called BackTrace -- into a separate
1109 :			library called $/trace-debug-profile.cm
1110 :			- eliminated all mentions of BTrace from SMLofNJ.Internals
1111 :			- only the instrumentation mechanism is now left in the compiler proper
1112 :			- BackTrace module is a plugin which is NOT plugged in by default
1113 :			- Coverage module is another such plugin
1114 :
1115 :			To get the benefits of any of these plugin modules, the code in
1116 :			question must be compiled with tdp instrumentation turned on. This
1117 :			can be done by setting SMLofNJ.Internals.TDP.mode to true.
1118 :			(The ref cell is also controlled via the -Ctdp.instrument=... switch.)
1119 :
1120 :			Plugins are selected at link time. (Pre-compiled instrumented code
1121 :			can be re-loaded with different plugins in effect.) When an
1122 :			instrumented module is linked, whatever plugins are at that time
1123 :			enabled will come into effect for that module.
1124 :
1125 :			To enable the back-trace plugin, load library $/trace-debug-profile.cm
1126 :			and invoke BackTrace.install() (e.g., from the interactive prompt).
1127 :			To enable the coverage plugin, load the same library and invoke
1128 :			Coverage.install().
1129 :
1130 :			Back-traces are generated automatically on uncaught exceptions and
1131 :			when the code in question explicitly invokes BackTrace.trigger().
1132 :
1133 :			Coverage (and execution frequency-) information must be queried
1134 :			explicitly by calling Coverage.not_covered and Coverage.hot_spots.
1135 :
1136 :			----------------------------------------------------------------------
1137 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1138 :	mblume	1652	Date: 2004/10/14 17:40:00 CDT
1139 :			Tag: blume-20041014-tdp-core
1140 :			Description:
1141 :
1142 :			Snapshot of a significant overhaul of how the trace/debug/profile support
1143 :			is hooked into the system (specifically: Core and SMLofNJ.Internals).
1144 :
1145 :			----------------------------------------------------------------------
1146 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1147 :	mblume	1650	Date: 2004/10/13 16:34:00 CDT
1148 :			Tag: blume-20041013-tdp
1149 :			Description:
1150 :
1151 :			Some rationalization of names:
1152 :
1153 :			structure BTrace -> structure TDPInstrument
1154 :			etc.
1155 :
1156 :			This is is preparation of using the original back-trace
1157 :			instrumentation for other purposes. "TDP" stands for
1158 :			Trace/Debug/Profile.
1159 :
1160 :			The control flag controlling whether instrumentation is on or off is now
1161 :			registered under a different name, so instead of running sml as
1162 :
1163 :			sml -Cinstrument.btrace-mode=true
1164 :
1165 :			one has to say
1166 :
1167 :			sml -Ctdp.instrument=true
1168 :
1169 :			----------------------------------------------------------------------
1170 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1171 :	mblume	1645	Date: 2004/10/11 16:37:00 CDT
1172 :			Tag: blume-20041011-regions
1173 :			Description:
1174 :
1175 :			Made some minor modifications to elabcore.sml to have source regions
1176 :			be propagated more tightly -- resulting in better (i.e., smaller)
1177 :			regions being reported in error- and debug messages.
1178 :
1179 :			----------------------------------------------------------------------
1180 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1181 :	mblume	1644	Date: 2004/10/08 22:50:00 CDT
1182 :			Tag: blume-20041008-cmkw
1183 :			Description:
1184 :
1185 :			Fixed handling of keywords in .cm files: After seeing "is" the lexer
1186 :			treats subsequent occurrences of "group", "library", "source", "is",
1187 :			"*", and "-" as ordinary identifiers rather than keywords.
1188 :
1189 :			Most seriously, this fixes a problem with CM's "shell" tool. The tool
1190 :			is supposed to accept a tool argument called "source", but this did
1191 :			not work because of the clash with the keyword.
1192 :
1193 :			----------------------------------------------------------------------
1194 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1195 :	mblume	1642	Date: 2004/10/07 16:00:00 CDT
1196 :			Tag: blume-20041007-cleanup
1197 :			Description:
1198 :
1199 :			Assorted cleanup work:
1200 :
1201 :			- got rid of intstrmap in favor of using the library's
1202 :			hash table implementation
1203 :			- threw out most of the pathnames stuff, as it was not used anyway
1204 :			- simplified tokentable implementation
1205 :			- fixed some minor spelling errors
1206 :
1207 :			----------------------------------------------------------------------
1208 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1209 :	mblume	1641	Date: 2004/10/06 15:15:15 CDT
1210 :			Tag: blume-20041006-handler
1211 :			Description:
1212 :
1213 :			Cleaned up the absyn to reflect the invariant that HANDLE always
1214 :			carries a FNexp as part of the type definition. This eliminates some
1215 :			superfluous sanity checks at runtime down the road.
1216 :
1217 :			Some minor cleanup of the btrace code.
1218 :
1219 :			----------------------------------------------------------------------
1220 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1221 :	mblume	1640	Date: 2004/10/01 10:20:30 CDT
1222 :			Tag: blume-20041001-slave
1223 :			Description:
1224 :
1225 :			Added hack to make slave mode work in the presence of the version
1226 :			tool. (Still, since the master does two passes over the code for
1227 :			CMB.make, the release number gets bumped twice when slaves are
1228 :			attached. I don't know if this is worth fixing...)
1229 :
1230 :			----------------------------------------------------------------------
1231 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1232 :	mblume	1639	Date: 2004/09/30 10:55:00 CDT
1233 :			Tag: blume-20040930-version
1234 :			Description:
1235 :
1236 :			* Moved the "version" magic into its own little library under
1237 :	mblume	1672	src/system/smlnj/internal. This avoids expensive reconstruction of
1238 :			a stable src/compiler/core.cm.
1239 :	mblume	1639
1240 :	mblume	1672	* At the same time, structure CompilerVersion is now known as
1241 :			structure SMLNJVersion.
1242 :	mblume	1639
1243 :			* Arranged for the version tool to NOT kick in when rebuilding the system
1244 :			(makeml -rebuild, fixpt). Otherwise one would never reach a fixpoint.
1245 :			Also, loading the versiontool does not work when rebuilding the system
1246 :			because CM is not properly initialized at that time.
1247 :
1248 :			----------------------------------------------------------------------
1249 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1250 :	mblume	1638	Date: 2004/09/29 14:00:00 CDT
1251 :			Tag: blume-20040929-autoversion
1252 :			Description:
1253 :
1254 :			Implemented some CM magic to have
1255 :			file src/compiler/TopLevel/main/version.sml
1256 :			generated automagically.
1257 :			The version is taken from two files: config/version and config/release.
1258 :			The first is expected to contain a two-part version number such as 110.49.
1259 :			The second should contain a single number, but it may be missing.
1260 :
1261 :			If the environment variable VERSIONTOOL_BUMP_RELEASE is defined at the
1262 :			time the version tool is loaded (which is the first time you say CMB.make),
1263 :			then the tool will increment the value stored in config/release every
1264 :			time CMB.make is invoked.
1265 :
1266 :			The binfile format is now insensitive to anything beyond the first
1267 :			two components of a version number, so bumping the release does not render
1268 :			binfiles incompatible. Auto-bumping can be used to keep track of versions
1269 :			during development without invalidating existing binfiles.
1270 :
1271 :			In any case, every CMB.make updates the date information in version.sml.
1272 :			(This is the date that is printed in the banner.)
1273 :
1274 :			----------------------------------------------------------------------
1275 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1276 :	mblume	1634	Date: 2004/09/28 10:53:00 CDT
1277 :			Tag: blume-20040928-controls
1278 :			Description:
1279 :
1280 :			Some cleanup of the controls code.
1281 :
1282 :			----------------------------------------------------------------------
1283 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1284 :	mblume	1633	Date: 2004/09/27 22:08:00 CDT
1285 :			Tag: blume-20040927-controls
1286 :			Description:
1287 :
1288 :			Added two pieces of functionality to the Controls interface:
1289 :
1290 :			1. val save'restore: 'a control -> unit -> unit
1291 :
1292 :			grabs the current value of the control in stage 1 and restores it
1293 :			in stage 2.
1294 :
1295 :			2. val set' : 'a control * 'a -> unit -> unit
1296 :
1297 :			stores the given value into the control in stage 2 (i.e., delayed)
1298 :			but does all error checking in stage 1.
1299 :			(This is for string controls that need to do parse their argument --
1300 :			something that might fail. In some cases, notably in CM, one
1301 :			already knows the intended argument but wants to delay the actual
1302 :			assignment until a time when error recovery would be more difficult.)
1303 :
1304 :			Changed the handling of controls in tool arguments to classes "sml" and
1305 :			"lazysml":
1306 :			- use Controls.save'restore as a more robust way of restoring the
1307 :			old value (in particular: without having to re-parse the string)
1308 :			- use controls to handle the "overload" keyword in the init group
1309 :			(I believe this change actually fixes a long-standing obscure bug.)
1310 :
1311 :			----------------------------------------------------------------------
1312 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1313 :	mblume	1632	Date: 2004/09/27 17:00:00 CDT
1314 :			Tag: blume-20040927-lazysml
1315 :			Description:
1316 :
1317 :			Added a new tool class called "lazysml" to CM's tool chest. The only
1318 :			difference to "sml" is that compilation is done with Control.lazysml
1319 :			set to true. A source of class "lazysml" is automatically recognized
1320 :			by a file name suffix of ".lml".
1321 :
1322 :			In addition to the above feature, the original class "sml" now also
1323 :			supports a tool argument "lazy" which has the same effect. As a
1324 :			result, the following three lines are equivalent:
1325 :
1326 :			foo.sml : lazysml
1327 :			foo.sml : sml (lazy)
1328 :			foo.sml (lazy)
1329 :
1330 :			The setting goes into effect both during parsing and during
1331 :			compilation. The original setting is restored right after parsing and
1332 :			after compilation, respectively.
1333 :
1334 :			In addition to all the above, there is also a general mechanism to set
1335 :			ANY of the "controls" that are available at the command line via
1336 :			"-C..." on a per-sml-file basis. The same rules that apply for "lazy"
1337 :			apply as well. (In fact, "lazy" is implemented as a special case of
1338 :			the general mechanism.)
1339 :
1340 :			The .cm file syntax uses a new keyword tool argument called "with".
1341 :			There are several ways of indicating the desired settings:
1342 :
1343 :			foo.sml (with:parser.quotations=true)
1344 :			foo.sml (with:(name:parser.quotations value:true))
1345 :			foo.sml (with:(name:name1 value:value1 name:name2 value:value2 ...))
1346 :			foo.sml (with:(name1=value1 name2=value2 ...))
1347 :			foo.sml (with:(name1=value1 name:name2 value:value2 name3=value3 ...))
1348 :
1349 :			etc.
1350 :
1351 :			Another possible abbreviation is to leave out the =v or value:v part
1352 :			if the name refers to a boolean control (in which case the value is
1353 :			taken to be true). Thus, one could get lazy sml also by saying:
1354 :
1355 :			foo.sml (with:parser.lazy-keyword=true)
1356 :			foo.sml (with:parser.lazy-keyword)
1357 :			foo.sml (with:(name:parser.lazy-keyword value:true))
1358 :			foo.sml (with:(name:parser.lazy-keyword))
1359 :
1360 :			----------------------------------------------------------------------
1361 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1362 :	mblume	1631	Date: 2004/09/24 16:22:00 CDT
1363 :			Tag: blume-20040924-ppc-long-branch
1364 :			Description:
1365 :
1366 :			Turned message about "emiting long form of branch" off by default.
1367 :			Added a control flag to turn it back on when desired.
1368 :
1369 :			----------------------------------------------------------------------
1370 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1371 :	mblume	1630	Date: 2004/09/24 16:05:00 CDT
1372 :			Tag: blume-20040924-rounding
1373 :			Description:
1374 :
1375 :			Applied patch for setting rounding modes under Mac OS X. Thanks to
1376 :			Melissa O'Neill for providing the code!
1377 :
1378 :			----------------------------------------------------------------------
1379 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1380 :	mblume	1629	Date: 2004/09/23 17:30:00 CDT
1381 :			Tag: blume-20040923-envvars
1382 :			Description:
1383 :
1384 :			1. Changed definition of type ControlRegistry.registry_tree to
1385 :			include control_info (i.e., the name of the controlling environment
1386 :			variable).
1387 :
1388 :			2. Added command-line flags -e and -E to print the names of environment
1389 :			variables that can be used to control internal settings.
1390 :			(This uses the new API mentioned in 1.)
1391 :
1392 :			----------------------------------------------------------------------
1393 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1394 :	mblume	1622	Date: 2004/09/13 16:50:00 CDT
1395 :			Tag: Release_110_49
1396 :			Description:
1397 :
1398 :			New working version (110.49). NEW BOOTFILES!
1399 :
1400 :			----------------------------------------------------------------------
1401 :	mblume	1621	Name: Matthias Blume
1402 :			Date: 2004/09/13 16:20:00 CDT
1403 :			Tag: blume-20040913-config-mlrisc
1404 :			Description:
1405 :
1406 :			Put target "mlrisc" back into the default list.
1407 :			(There is no harm in having it, and some users have expressed their
1408 :			wish to have "mlrisc" included by default.)
1409 :
1410 :			----------------------------------------------------------------------
1411 :	jhr	1620	Name: John Reppy
1412 :			Date: 2004/09/13
1413 :			Tag: jhr-20040913-signals
1414 :			Description:
1415 :
1416 :			Fixed the signal masking code to properly nest mask/unmask operations
1417 :			on a per-signal basis.
1418 :
1419 :			----------------------------------------------------------------------
1420 :	mblume	1619	Name: Matthias Blume (blume (at) tti - c (dot) org)
1421 :			Date: 2004/09/08 13:20:00 CDT
1422 :			Tag: blume-20040908-heap-magic
1423 :			Description:
1424 :
1425 :			Bumped the heap macig number to 0x09082004 to account for the changed
1426 :			layout of the ML frame under MacOS X.
1427 :
1428 :			----------------------------------------------------------------------
1429 :	allenleung	1618	Name: Allen Leung (leunga (at) reservoir (dot) com)
1430 :			Date: 2004/09/03 11:26:00 EST
1431 :			Tag: leunga-20040903-cygwin-install
1432 :			Description:
1433 :
1434 :			Added a patch to _arch-n-opsys to enable the Cygwin runtime.
1435 :			The Cygwin runtime is turned on by setting the environment
1436 :			variable SMLNJ_CYGWIN_RUNTIME to 1.
1437 :
1438 :			----------------------------------------------------------------------
1439 :	mblume	1615	Name: Matthias Blume (blume (at) tti - c (dot) org)
1440 :	mblume	1617	Date: 2004/08/31 17:15:00 CDT
1441 :			Tag: blume-20040831-core
1442 :			Description:
1443 :
1444 :			Added some exports to src/compiler/core.cm upon request by J. Joemann.
1445 :
1446 :			----------------------------------------------------------------------
1447 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1448 :	mblume	1616	Date: 2004/08/30 17:55:00 CDT
1449 :			Tag: blume-20040830-installer
1450 :			Description:
1451 :
1452 :			Upon request by Johannes Joemann:
1453 :
1454 :			- improved ML code of installer to fall back to coping when renaming
1455 :			fails (i.e., when source and target are on different file systems);
1456 :			the code compiles but has yet to be tested in anger
1457 :			- removed mlrisc from list of default targets (config/targets)
1458 :
1459 :			----------------------------------------------------------------------
1460 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1461 :	mblume	1615	Date: 2004/08/27 17:20:00 CDT
1462 :			Tag: blume-20040827-ptreql
1463 :			Description:
1464 :
1465 :			Added ptreql primop to structure InlineT (upon request from Larry
1466 :			Paulson).
1467 :
1468 :			----------------------------------------------------------------------
1469 :	allenleung	1613	Name: Allen Leung (leunga (at) reservoir (dot) com)
1470 :	allenleung	1614	Date: 2004/08/15 21:21:00 EST
1471 :			Tag: leunga-110_48-udgraph
1472 :			Description:
1473 :
1474 :			Another bug fix from Carl Hauser:
1475 :
1476 :			diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml
1477 :			> 48c48
1478 :			> < | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else
1479 :			> e::L)
1480 :			> ---
1481 :			> > | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L)
1482 :			> Without this, any deletion of an edge in an undirected graph does severe
1483 :			> violence to the graph.
1484 :
1485 :			----------------------------------------------------------------------
1486 :			Name: Allen Leung (leunga (at) reservoir (dot) com)
1487 :	allenleung	1613	Date: 2004/08/10 23:35:00 EST
1488 :			Tag: leunga-110_48-ppc
1489 :			Description:
1490 :
1491 :			The IBM/MacOS syntax switch on PPC was incorrectly swapped.
1492 :
1493 :			----------------------------------------------------------------------
1494 :	mblume	1602	Name: Matthias Blume (blume (at) tti - c (dot) org)
1495 :	mblume	1615	Date: 2004/08/10 12:00:00 CDT
1496 :	mblume	1602	Tag: Release_110_48
1497 :			Description:
1498 :
1499 :			New working version (110.48). NEW BOOTFILES!
1500 :
1501 :			----------------------------------------------------------------------
1502 :	allenleung	1599	Name: Allen Leung (leunga (at) reservoir (dot) com)
1503 :			Date: 2004/08/09 12:21:00 EST
1504 :			Tag: leunga-110_47-dijsktra
1505 :			Description:
1506 :
1507 :			Bug fix from Carl Hauser:
1508 :
1509 :	blume	2155	single_source_shortest_paths in dijkstra.sml was observed to get wrong
1510 :	allenleung	1599	answers (by comparing to single_source_shortest_paths in bellman-ford.sml).
1511 :
1512 :	blume	2155	The problem is that following the expression A.update(dist,s,Num.zero)
1513 :	allenleung	1599	it is necessary to update the priority queue using Q.decreaseWeight(Q,s).
1514 :
1515 :			----------------------------------------------------------------------
1516 :	mblume	1595	Name: Matthias Blume (blume (at) tti - c (dot) org)
1517 :			Date: 2004/08/06 18:10:00 CDT
1518 :			Tag: blume-20040806-cmdline
1519 :			Description:
1520 :
1521 :			Fiddled with handling of command-line options:
1522 :
1523 :			* sml now quits after processing the command line
1524 :			if -H, -S, -h<n>, or -s<n> appears as the last
1525 :			command-line argument
1526 :			* a new option -q terminates the session when encountered on
1527 :			the command line; subsequent arguments will be ignored
1528 :			* bug fixes: short (erroneous) arguments are no longer ignored
1529 :			completely
1530 :
1531 :			----------------------------------------------------------------------
1532 :	allenleung	1593	Name: Allen Leung (leunga (at) reservoir (dot) com)
1533 :			Date: 2004/08/04 18:17:00 EST
1534 :			Tag: leunga-110_47-ppc-ibm-asm
1535 :			Description:
1536 :
1537 :			- Added minimal IBM assembly syntax support for PowerPC.
1538 :
1539 :	blume	2155	- Cygwin: manually changed the file cygwin.def. Some exported symbols have
1540 :	allenleung	1593	been altered in the runtime. We need an automatic way to keep the file
1541 :			in sync.
1542 :
1543 :			----------------------------------------------------------------------
1544 :	mblume	1548	Name: Matthias Blume (blume (at) tti - c (dot) org)
1545 :	mblume	1581	Date: 2004/08/04 14:00:00 CDT
1546 :			Tag: Release_110_47
1547 :			Description:
1548 :
1549 :			New working version (110.47). NEW BOOTFILES!
1550 :
1551 :			----------------------------------------------------------------------
1552 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1553 :	mblume	1580	Date: 2004/08/03 14:25:00 CDT
1554 :			Tag: blume-20040803-callingconv
1555 :			Description:
1556 :
1557 :			Added low-level support for choosing C calling conventions by
1558 :			twiddling the type of rawccall. (See
1559 :			src/compiler/Semant/types/cproto.sml for details.)
1560 :
1561 :			----------------------------------------------------------------------
1562 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1563 :	mblume	1579	Date: 2004/08/02 15:55:00 CDT
1564 :			Tag: blume-20040802-backout
1565 :			Description:
1566 :
1567 :			Backed out of change to win32-filesys.c. The earlier patch to
1568 :			get_file_time caused CM to produce files with the wrong time stamp.
1569 :
1570 :			----------------------------------------------------------------------
1571 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1572 :	mblume	1573	Date: 2004/08/02 14:45:00 CDT
1573 :			Tag: blume-20040802-nlffi-win32
1574 :			Description:
1575 :
1576 :			Added NLFFI support for Win32, adapted from a patch provided by David
1577 :			Hansel. This is currently completely untested. Also, the issue
1578 :			concerning stdcall vs. ccall is still unresolved.
1579 :
1580 :			----------------------------------------------------------------------
1581 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1582 :	mblume	1572	Date: 2004/07/30 17:55:00 CDT
1583 :			Tag: blume-20040730-various
1584 :			Description:
1585 :
1586 :			Gearing up towards 110.47...
1587 :
1588 :			- various minor bugfixes to ml-nlffigen
1589 :			- a beginning of a manual for nlffi
1590 :
1591 :			- eliminated 'export name=value' in config/install.sh as this does
1592 :			not work with certain versions of /bin/sh
1593 :			(Thanks to David King at Motorola for catching this.)
1594 :
1595 :			- several bugfixes provided or suggested by David Hansel at Reactive Systems:
1596 :			- added a test for tm==NULL to gmtime.c and localtime.c
1597 :			- applied patch for incorrect GetFileTime under win32
1598 :			- toSeconds -> toMilliseconds in Win32/win32-process.sml
1599 :
1600 :			----------------------------------------------------------------------
1601 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1602 :	mblume	1557	Date: 2004/07/21 18:20:00 CDT
1603 :			Tag: blume-20040721-nlffigen
1604 :			Description:
1605 :
1606 :			- Fixed minor issue in ml-nlffigen: Now generate structure T_foo
1607 :			for a typedef to an incomplete type, but leave out the "typ" member.
1608 :			(This is just for consistency.)
1609 :			- Started to produce what is supposed to become better (i.e., comprehensive)
1610 :			documentation of what ml-nlffigen does and produces.
1611 :
1612 :			----------------------------------------------------------------------
1613 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1614 :	mblume	1548	Date: 2004/07/14 16:25:00 CDT
1615 :			Tag: blume-20040714-union
1616 :			Description:
1617 :
1618 :			Added C_UNION to c-calls/c-types.sml and updated the machinery
1619 :			(ml-nlffigen, cproto.sml) that conveys C function interface
1620 :			information to the code generator.
1621 :
1622 :			However, the actual architecture-specific implementation of function
1623 :			arguments and results that are C unions is still not implemented.
1624 :
1625 :			----------------------------------------------------------------------
1626 :	allenleung	1539	Name: Allen Leung (leunga (at) reservoir (dot) com)
1627 :	allenleung	1546	Date: 2004/07/14 14:38:00 EST
1628 :			Tag: leunga-110_46_1-ppc-lwzu
1629 :			Description:
1630 :
1631 :			Added these instructions to the PowerPC architecture:
1632 :			LBZU(X), LHZU(X), LWZU(X),
1633 :	blume	2155	STWU(X), STFDU, STFSU
1634 :
1635 :	allenleung	1546	etc...
1636 :
1637 :			Note: I haven't added their instruction encoding into the description.
1638 :
1639 :			----------------------------------------------------------------------
1640 :			Name: Allen Leung (leunga (at) reservoir (dot) com)
1641 :	allenleung	1539	Date: 2004/07/13 15:04:00 EST
1642 :			Tag: leunga-110_46_1-ppc-lwarx
1643 :			Description:
1644 :
1645 :			Added the two instructions LWARX and STWCX to the PowerPC
1646 :	blume	2155	instruction set.
1647 :	allenleung	1539
1648 :			A (untested) rewrite of loop-structure.sml. The old version
1649 :			is completely broken.
1650 :
1651 :			----------------------------------------------------------------------
1652 :	mblume	1479	Name: Matthias Blume (blume (at) tti - c (dot) org)
1653 :	mblume	1537	Date: 2004/07/13 13:50:00 CDT
1654 :			Tag: blume-20040713-nlffi
1655 :			Description:
1656 :
1657 :			- use paramAlloc to report c-calls with too many arguments
1658 :			(for PPC version where parameter area is pre-allocated)
1659 :			- added ccall_maxargspace to machspec (to implement the above)
1660 :			- made "make" commend in CM's "make" tool configurable
1661 :			- added option (default: on) for passing the name of the SML/NJ's "bin"
1662 :			directory to "make"; the call looks like this:
1663 :
1664 :			make <options> SMLNJ_BINDIR=<dir> <target>
1665 :
1666 :			This can be used by the Makefile to, e.g., pick the "right" version
1667 :			of ml-nlffigen.
1668 :			- minor code tweaks
1669 :
1670 :			----------------------------------------------------------------------
1671 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1672 :	mblume	1532	Date: 2004/07/12 22:50:00 CDT
1673 :			Tag: blume-110_46_1-macosx-nlffi
1674 :			Description:
1675 :
1676 :			NLFFI under Mac OS X now working (sort of). This is largely untested,
1677 :			though.
1678 :
1679 :			Note: 1. You have to make a new, clean build of the runtime system.
1680 :			2. There are new BOOTFILES, you have to use them!
1681 :			(Doing the bootstrap process yourself would be *very* painful!
1682 :			If you absolutely have to do it, build the system under
1683 :			a different architecture and then cross-compile.)
1684 :
1685 :			Version bumped to 110.46.1 to account for runtime data format changes.
1686 :
1687 :			----------------------------------------------------------------------
1688 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1689 :	mblume	1515	Date: 2004/06/18 14:30:00 CDT
1690 :			Tag: blume-20040618-unix
1691 :			Description:
1692 :
1693 :			Changed the implementation of structure Unix so that the same stream
1694 :			is returned every time one of the {text,bin}{In,Out}streamOf functions
1695 :			is invoked on the same proc. This is not what the spec currently
1696 :			says -- although IMO it arguably should. (See discussion below.)
1697 :
1698 :			----------------------------------------------------------------------
1699 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1700 :	mblume	1507	Date: 2004/06/17 18:15:00 CDT
1701 :			Tag: Release_110_46
1702 :			Description:
1703 :
1704 :			New working version (110.46). NEW BOOTFILES!
1705 :
1706 :			----------------------------------------------------------------------
1707 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1708 :	mblume	1506	Date: 2004/06/17 17:20:00 CDT
1709 :			Tag: blume-20040617-timer-unix
1710 :			Description:
1711 :
1712 :			Changed the interface of structures Timer and Unix to match the most
1713 :			recent Basis spec.
1714 :
1715 :			In the case of Unix there still seems to be an open/weird issue:
1716 :
1717 :			The {text,bin}{In,Out}streamOf functions are supposed to create
1718 :			fresh streams whenever they are called -- as opposed to have them
1719 :			return the same stream every time. This design is supposed to
1720 :			prevent space leaks caused by proc values hanging on to streams.
1721 :
1722 :			The reap function, on the other hand, is supposed to close the
1723 :			streams. This cannot be done without having a handle on the
1724 :			stream in proc after all...
1725 :
1726 :			I took the liberty to implement the following stopgap solution:
1727 :
1728 :			The proc value hangs on to the most recently created stream(s).
1729 :			Reap closes those. If either or both of the two streams hadn't
1730 :			been created at all yet, then reap will close the corresponding
1731 :			file descriptors directly.
1732 :
1733 :			PS: I don't understand the original space leak argument anymore. If
1734 :			a proc hangs on to the imperative stream, then I/O operations on those
1735 :			will advance the state of the cached stream and avoid the space leak.
1736 :
1737 :			----------------------------------------------------------------------
1738 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1739 :	mblume	1500	Date: 2004/05/28 16:45:00 CDT
1740 :			Tag: blume-20040528-basis
1741 :			Description:
1742 :
1743 :			Added signature PACK_REAL and exported functor PrimIO.
1744 :
1745 :			----------------------------------------------------------------------
1746 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1747 :	mblume	1498	Date: 2004/05/25 16:00:00 CDT
1748 :			Tag: blume-20040525-group-owner
1749 :			Description:
1750 :
1751 :			CM now ignores (but still accepts) the "owner" information in group
1752 :			descriptions. The owner of a group is its next enclosing
1753 :			library. Each group must have a unique owner. (There is a virtual
1754 :	mblume	1505	"toplevel" library that owns groups which are not nested within a real
1755 :	mblume	1498	library.) Previously, each group had to explicitly declare its owner,
1756 :			and CM would check that such a declaration is correct. The new scheme
1757 :			is to have CM check that for each group there is precisely one owning
1758 :			library.
1759 :
1760 :			The advantage of the new scheme is that the programmer no longer needs
1761 :			to maintain the somewhat annoying owner information. The downside is
1762 :			that CM cannot enforce the ownership rule across multiple runs of
1763 :			CM.make. Fortunately, enclosing the same group in two different
1764 :			libraries A and B which are not part of the same program does not
1765 :			cause real problems.
1766 :
1767 :			----------------------------------------------------------------------
1768 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1769 :	mblume	1496	Date: 2004/05/20 16:00:00 CDT
1770 :			Tag: blume-20040520-win32
1771 :			Description:
1772 :
1773 :			Made the win32 version work again. (Strangely, a misplaced comma had
1774 :			slipped into win32-process.c which prevented the runtime from being
1775 :			compiled correctly.)
1776 :
1777 :			Also, included a minor addition to ml-build.bat analogous to what was
1778 :			done in blume-20040519-ml-build.
1779 :
1780 :			----------------------------------------------------------------------
1781 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1782 :	mblume	1494	Date: 2004/05/19 22:10:00 CDT
1783 :			Tag: blume-20040519-ml-build
1784 :			Description:
1785 :
1786 :			Arranged for ml-build to clean up after itself a little bit better.
1787 :			The script generates a temporary SML source file and compiles it using
1788 :			CM, so CM generates metadata (GUID, SKEL, objectfile) for it. It now
1789 :			gets rid of those at the end, so they don't accumulate under .cm.
1790 :
1791 :			This required a minor change to install.sh because the name of the
1792 :			metadata directory (default: .cm) is actually configurable at
1793 :			installation time.
1794 :
1795 :			----------------------------------------------------------------------
1796 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1797 :	mblume	1491	Date: 2004/05/18 15:50:00 CDT
1798 :			Tag: blume-20040518-mkreader
1799 :			Description:
1800 :
1801 :			Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
1802 :			implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
1803 :
1804 :			----------------------------------------------------------------------
1805 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1806 :	mblume	1489	Date: 2004/05/11 14:35:00 CDT
1807 :			Tag: blume-20040511-win32sock
1808 :			Description:
1809 :
1810 :			Added previously missing support for many socket-related functions
1811 :			under win32. Thanks to David Hansel <hansel@reactive-systems.com>
1812 :			for the voluminous patch!
1813 :
1814 :			(I have not tested this patch under win32 yet.)
1815 :
1816 :	mblume	1490	Here is David's e-mail:
1817 :
1818 :			Hi,
1819 :
1820 :			Attached to this email you find a diff against sml/nj 110.45
1821 :			that will enable socket support under Windows.
1822 :
1823 :			To apply the patch (using unix or cygwin)
1824 :			1) gunzip runtime.diff.gz
1825 :			2) "cd" into "src/runtime" in the source tree of a fresh
1826 :			110.45 installation.
1827 :			3) patch -p 1 < [your/path/to]runtime.diff
1828 :
1829 :	blume	2155	The code compiles fine but has NOT yet been extensively tested.
1830 :			I only ran a few tests for basic socket client functionality
1831 :			(which worked fine). Especially the functions that use ioctl
1832 :	mblume	1490	are not tested at all and might not work (see below).
1833 :
1834 :			I implemented this since we want to move to a newer version of sml/nj
1835 :			but need socket support in order to use it. This is the first time I
1836 :			even had a look at the sml/nj source, so please review my changes
1837 :			before making this part of the distribution! Here are a few issues
1838 :	blume	2155	that I think might be better for someone to solve who is more
1839 :	mblume	1490	familiar with the sml/nj source (and socket programming):
1840 :
1841 :			- getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
1842 :			exception since I could not figure out what the windows equivalent
1843 :			of these functions is
1844 :
1845 :			- In sockets-osdep.h there are a some #include statements that are
1846 :			only used in a few files that include sockets-osdep.h
1847 :
1848 :			- In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
1849 :			does not process its return value since I don't know how to
1850 :			report an error upwards.
1851 :
1852 :			- It would probably be good to have a call to WSACleanup() when
1853 :	blume	2155	the library is unloaded (if there is such a possibility).
1854 :	mblume	1490	Otherwise I think Windows will take care of this automatically
1855 :			when the process finishes.
1856 :
1857 :			- I used ioctlsocket() as a replacement for ioctl() but I have
1858 :			no idea if that is actually the proper replacement on Windows.
1859 :
1860 :			- All these issues are marked in the code by "FIXME" comments.
1861 :
1862 :	blume	2155	We use sml/nj extensively in our products and are quite happy
1863 :			with it. I hope this contribution will help you.
1864 :	mblume	1490
1865 :			Keep up the good work!
1866 :
1867 :			David
1868 :
1869 :	mblume	1489	----------------------------------------------------------------------
1870 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1871 :	mblume	1488	Date: 2004/05/11 14:20:00 CDT
1872 :			Tag: blume-20040511-installml
1873 :			Description:
1874 :
1875 :			Fixed two bugs in installml script. (Thanks to Vesa A. Norrman for
1876 :			the patch.)
1877 :
1878 :			----------------------------------------------------------------------
1879 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1880 :	mblume	1487	Date: 2004/05/11 14:05:00 CDT
1881 :			Tag: blume-20040511-nlffi-netbsd
1882 :			Description:
1883 :
1884 :			Added support for nlffi under netbsd. (Thanks to Vesa A. Norrman for
1885 :			the patch.)
1886 :
1887 :			----------------------------------------------------------------------
1888 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1889 :	mblume	1486	Date: 2004/05/11 12:05:00 CDT
1890 :			Tag: blume-20040511-exports
1891 :			Description:
1892 :
1893 :			As per request by Adam Chlipala <adam@hcoop.net>, extended various
1894 :			export lists in compiler-related .cm-files.
1895 :
1896 :			----------------------------------------------------------------------
1897 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1898 :	mblume	1485	Date: 2004/05/11 11:35:00 CDT
1899 :			Tag: blume-20040511-allsource
1900 :			Description:
1901 :
1902 :			The installer now honors the "src-smlnj" target again, although its meaning
1903 :			has changed from "all sources required for the compiler" to "all sources
1904 :			the installer knows about". In other words, if you enable "src-smlnj"
1905 :			in the "targets" file, then the installer will pull in sources for
1906 :			everything. (Notice that this refers to source code only. Compiled
1907 :			code is still only installed for modules that were requested explicitly
1908 :			or which are required for other modules that were requested explicitly.)
1909 :
1910 :			----------------------------------------------------------------------
1911 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1912 :	mblume	1482	Date: 2004/04/23 17:40:00 CDT
1913 :			Tag: blume-20040423-ieee-scan
1914 :			Description:
1915 :
1916 :			Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
1917 :			in the exponent calculation we get INF or ZERO (depending on the mantissa
1918 :			and the sign of the exponent).
1919 :
1920 :			----------------------------------------------------------------------
1921 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1922 :	mblume	1480	Date: 2004/04/23 10:40:00 CDT
1923 :			Tag: blume-20040423-ml-build
1924 :			Description:
1925 :
1926 :			The ml-build script now terminates with a non-0 status when something
1927 :			goes wrong.
1928 :
1929 :			----------------------------------------------------------------------
1930 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1931 :	mblume	1479	Date: 2004/04/22 16:35:00 CDT
1932 :			Tag: blume-20040422-Option
1933 :			Description:
1934 :
1935 :			Made exception Option to be the same as exception Option.Option
1936 :			(as it should be).
1937 :
1938 :			----------------------------------------------------------------------
1939 :	allenleung	1468	Name: Allen Leung (leunga (at) reservoir (dot) com)
1940 :			Date: 2004/03/19 14:40:00 EST
1941 :			Tag: leunga-20040319-cygwin-nlffi
1942 :			Description:
1943 :
1944 :			Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
1945 :			of SML/NJ. The problem is that
1946 :
1947 :			lib = dlopen(NULL, ...)
1948 :			f = dlsym(lib, "malloc");
1949 :
1950 :	blume	2155	does not work on Windows unless we explicitly export symbols
1951 :			such as 'malloc' during linking. We fixed this by explicitly
1952 :	allenleung	1468	exporting the required symbols with the magic gcc incantation:
1953 :
1954 :			-Wl,--export-all cygwin.def
1955 :
1956 :			where cygwin.def is a file containing all the symbols that
1957 :	blume	2155	we wish to export.
1958 :	allenleung	1468
1959 :	blume	2155	I suspect this is a Windows problem and we'll have to
1960 :			do the same (somehow with windows compilers) when
1961 :	allenleung	1468	we build the native win32 version with the system
1962 :	blume	2155	calls LoadLibrary/GetProcAddress.
1963 :	allenleung	1468
1964 :			----------------------------------------------------------------------
1965 :	mblume	1384	Name: Matthias Blume (blume (at) tti - c (dot) org)
1966 :	mblume	1465	Date: 2004/03/04 16:35:00 CST
1967 :			Tag: blume-20040304-intinf-fmt
1968 :			Description:
1969 :
1970 :			Fixed problem with IntInf.fmt (sign would show up on the right instead
1971 :			of on the left for BIN, OCT, and HEX).
1972 :
1973 :			----------------------------------------------------------------------
1974 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1975 :	mblume	1464	Date: 2004/03/04 11:25:00 CST
1976 :			Tag: blume-20040304-symlinks
1977 :			Description:
1978 :
1979 :			Fixed problem with installer script (unix only) where bin/ml-yacc and
1980 :			friends pointed (via symlinks) to absolute locations instead of just
1981 :			.run-sml. This was reported by Vesa A Norrman.
1982 :
1983 :			----------------------------------------------------------------------
1984 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1985 :	mblume	1455	Date: 2004/02/13 14:50:00 CST
1986 :			Tag: Release_110_45
1987 :			Description:
1988 :
1989 :			New working version (110.45). New bootfiles.
1990 :
1991 :			----------------------------------------------------------------------
1992 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
1993 :	mblume	1448	Date: 2004/01/26 15:15:15 CST
1994 :			Tag: blume-20040126-toplevel
1995 :			Description:
1996 :
1997 :			Improved handling of exceptions at the interactive toplevel.
1998 :
1999 :			----------------------------------------------------------------------
2000 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2001 :			Date: 2004/01/26 11:25:00
2002 :	mblume	1446	Tag: blume-20040126-app
2003 :			Description:
2004 :
2005 :			Type of top-level "app" corrected.
2006 :	mblume	1447	Added code for setting vp_limitPtrMask to Win32-specific runtime.
2007 :	mblume	1446
2008 :			----------------------------------------------------------------------
2009 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2010 :	mblume	1427	Date: 2003/11/18 17:10 CST
2011 :			Tag: blume-20031118-basis-fiddle
2012 :			Description:
2013 :
2014 :			- changed Timer interface to what might become the spec
2015 :			- POSIX_FLAGS -> BIT_FLAGS according to spec
2016 :			- some other minor discrepancies wrt. spec eliminated
2017 :
2018 :			----------------------------------------------------------------------
2019 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2020 :	mblume	1414	Date: 2003/11/06 12:00:00 CST
2021 :			Tag: Release_110_44
2022 :			Description:
2023 :
2024 :			New working version (110.44). New bootfiles.
2025 :
2026 :			----------------------------------------------------------------------
2027 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2028 :	mblume	1411	Date: 2003/11/04 11:50:00 CST
2029 :			Tag: blume-20031104-move-libraries
2030 :			Description:
2031 :
2032 :			Eliminated the "dont_move_libraries" directive in config/targets.
2033 :			(The mechanism was broken and could not be fixed easily. Moreover,
2034 :			there does not seem to be any reason not to move all libraries into
2035 :			lib during installation. I originally implemented this directive as a
2036 :			backward-compatibility feature when I first introduced the new CM.
2037 :			Now that things have been stable for a long time and going back to the
2038 :			old CM is not an option, there is no reason to keep it around.)
2039 :
2040 :			----------------------------------------------------------------------
2041 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2042 :	mblume	1409	Date: 2003/11/03 16:00:00 CST
2043 :			Tag: blume-20031103-installdir
2044 :			Description:
2045 :
2046 :			Made installer honor INSTALLDIR variable again. (Thanks to Chris
2047 :			Richards for pointing out the problem and providing the solution.)
2048 :
2049 :			----------------------------------------------------------------------
2050 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2051 :	mblume	1400	Date: 2003/10/01 17:05:00 CDT
2052 :			Tag: blume-20031001-lal-mlrisc
2053 :			Description:
2054 :
2055 :			MLRISC bug fix from Lal.
2056 :
2057 :			----------------------------------------------------------------------
2058 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2059 :	mblume	1399	Date: 2003/09/30 16:10:00 CDT
2060 :			Tag: blume-20030930-primio-bat
2061 :	mblume	1398	Description:
2062 :
2063 :			1. Added openVector, nullRd, and nullWr to PRIM_IO.
2064 :			2. Improved .bat files (for Win32 port) to make things work under Win95.
2065 :			(thanks to Aaron S. Hawley for this one)
2066 :
2067 :			----------------------------------------------------------------------
2068 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2069 :	mblume	1395	Date: 2003/09/26 16:05:00 CDT
2070 :			Tag: blume-20030926-wrappriv
2071 :			Description:
2072 :
2073 :			Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
2074 :
2075 :			----------------------------------------------------------------------
2076 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2077 :	mblume	1394	Date: 2003/09/26 15:00:00 CDT
2078 :			Tag: blume-20030926-110_43_3
2079 :			Description:
2080 :
2081 :			- additional cleanup
2082 :			- version number bump, NEW BOOTFILES
2083 :
2084 :			----------------------------------------------------------------------
2085 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2086 :	mblume	1393	Date: 2003/09/26 12:00:00 CDT
2087 :			Tag: blume-20030926-ppautoload
2088 :			Description:
2089 :
2090 :			I modified the read-eval-print loop so that the autoloader gets
2091 :			invoked whenever the prettyprinter tries to look up a symbol that
2092 :			is not currently defined in the toplevel environment but which
2093 :			appears in CM's autoload registry. As a result, we see far fewer of
2094 :			those ?.Foo.Bar.xxx names in the prettyprinter's output.
2095 :
2096 :			In addition to this I tried to clean up some pieces of the Basis
2097 :			implementation (e.g., Socket, Word8Array) in order to prevent other
2098 :			instances of these ?.Foo.Bar.xxx names from being printed.
2099 :
2100 :			The mechanism that picks names for types still needs some work, though.
2101 :			(Right now it seems that if there is a type A.t which is defined to
2102 :	mblume	1394	be B.u, but B is unavailable at toplevel, then A.t gets printed as
2103 :			"?.B.u" although the perhaps more sensible solution would be to use
2104 :	mblume	1393	"A.t" in this case. In other words, the prettyprinter should follow
2105 :			a chain of DEFtycs not farther than there are corresponding toplevel
2106 :			names in the current environment.)
2107 :
2108 :			----------------------------------------------------------------------
2109 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2110 :	mblume	1391	Date: 2003/09/24 16:31:00 CDT
2111 :			Tag: blume-20030924-installer
2112 :			Description:
2113 :
2114 :			Another installer tweak: All the ML code for the installer is now
2115 :			compiled during CMB.make and put into a little library called
2116 :			$smlnj/installer.cm. The installation then simply invokes
2117 :
2118 :			sml -m $smlnj/installer.cm
2119 :
2120 :			and everything happens automagically.
2121 :
2122 :			Win32: ML code senses value of environment variable SMLNJ_HOME.
2123 :			Unix: ML code senses values of environment variables ROOT, CONFIGDIR,
2124 :			and BINDIR.
2125 :
2126 :			The new scheme guarantees that the ML code responsible for the installation
2127 :			is in sync with the APIs of the main system. Also, the installer is
2128 :			somewhat faster because the installer script is precompiled.
2129 :
2130 :			----------------------------------------------------------------------
2131 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2132 :	mblume	1390	Date: 2003/09/24 15:35:00 CDT
2133 :			Tag: blume-20030924-synsock
2134 :			Description:
2135 :
2136 :			Added a signature SYNCHRONOUS_SOCKET to basis.cm. This is like SOCKET
2137 :			but excludes all non-blocking operations. Defined SOCKET (in Basis)
2138 :			and CML_SOCKET in terms of SYNCHRONOUS_SOCKET. Removed superfluous
2139 :			implementations of non-blocking operations from CML's Socket
2140 :			structure.
2141 :
2142 :			----------------------------------------------------------------------
2143 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2144 :	mblume	1389	Date: 2003/09/24 15:10:05 CDT
2145 :			Tag: blume-20030924-sockets
2146 :			Description:
2147 :
2148 :			1. Fixed SOCKET API and implementation to match Basis spec.
2149 :			This required changing the internal representation of sockets to one
2150 :			that remembers (for each socket file descriptor) whether it is currently
2151 :			blocking or non-blocking. This state is maintained lazily (i.e., a system
2152 :			call is made only if the state actually needs to change).
2153 :
2154 :			2. OS-specific details of sockets were moved into separate files, thus
2155 :			making it possible to unify the bulk of the socket implementations
2156 :			between Unix and Win32.
2157 :
2158 :			3. CML's socket API changed accordingly.
2159 :			(Note that we need to remove non-blocking functions from this API
2160 :			since they are redundant in the case of CML!)
2161 :
2162 :			4. CML's socket implementation now makes use of non-blocking functions
2163 :			provided by Basis, thus removing all OS-dependent code from this part
2164 :			of CML.
2165 :
2166 :			5. Changed Real64.precision from 52 to 53. Minor cleanup in Real64 code.
2167 :
2168 :			----------------------------------------------------------------------
2169 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2170 :	mblume	1387	Date: 2003/09/22 12:10:00 CDT
2171 :	mblume	1388	Tag: blume-20030922-110_43_2
2172 :	mblume	1387	Description:
2173 :
2174 :			Made a new interim version and bootfiles for developer's bootstrapping
2175 :			convenience.
2176 :
2177 :			110.43.2 -- NEW BOOTFILES
2178 :
2179 :			----------------------------------------------------------------------
2180 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2181 :	mblume	1385	Date: 2003/09/19 15:55:00 CDT
2182 :			Tag: blume-20030919-cmdir
2183 :			Description:
2184 :
2185 :			1. new-install.sh -> install.sh
2186 :			2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
2187 :			3. tweaked installer so that another name instead of .cm can be chosen
2188 :			at install time (by setting the CM_DIR_ARC environment variable
2189 :			during installation); once installation is complete, the name is
2190 :			fixed
2191 :
2192 :			----------------------------------------------------------------------
2193 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2194 :	mblume	1384	Date: 2003/09/18 16:00:00 CDT
2195 :			Tag: blume-20030918-110_43_1
2196 :			Description:
2197 :
2198 :			Made a new interim version and bootfiles for developer's bootstrapping
2199 :			convenience.
2200 :
2201 :			110.43.1 -- NEW BOOTFILES
2202 :
2203 :			----------------------------------------------------------------------
2204 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2205 :	mblume	1383	Date: 2003/09/18 15:20:00 CDT
2206 :			Tag: blume-20030918-misc
2207 :			Description:
2208 :
2209 :			1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
2210 :			this seems to be controversial at the moment) and used those in
2211 :			Posix.ProcEnv.times.
2212 :
2213 :			2. Added Time.{from,to}Nanoseconds to Time.
2214 :
2215 :			3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
2216 :			For example, fromLargeInt never needs to look at more than 3 "big
2217 :			digits" to get its 53 bits of precision.
2218 :
2219 :			----------------------------------------------------------------------
2220 :	mblume	1384	Name: Matthias Blume (blume (at) tti - c (dot) org)
2221 :	mblume	1381	Date: 2003/09/17 16:30:00 CDT
2222 :			Tag: blume-20030917-real32-slices
2223 :			Description:
2224 :
2225 :			Added an entry to the primitive environment
2226 :			(compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
2227 :			added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
2228 :
2229 :			Removed some of the "magic" constants in real64.sml and replaced them
2230 :			with code that generates these values from their corresponding
2231 :			integer counterparts.
2232 :
2233 :			Made all(?) the slice-related changes to the Basis and made everything
2234 :			compile again...
2235 :
2236 :			----------------------------------------------------------------------
2237 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2238 :	mblume	1375	Date: 2003/09/15 17:45:00 CDT
2239 :			Tag: blume-20030915-rbase
2240 :			Description:
2241 :
2242 :			Fixed bug in Real.fromLargeInt.
2243 :
2244 :			----------------------------------------------------------------------
2245 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2246 :	mblume	1369	Date: 2003/09/13 18:11:00 CDT
2247 :			Tag: blume-20030913-libinstall
2248 :			Description:
2249 :
2250 :			Minor bugfix in config/libinstall (set anchor with path to
2251 :			standalone tool after installing it, otherwise libraries that
2252 :			need ml-lex or ml-yacc won't compile the first time the installer
2253 :			runs).
2254 :
2255 :			----------------------------------------------------------------------
2256 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2257 :	mblume	1368	Date: 2003/09/12 11:45:00 CDT
2258 :			Tag: blume-20030912-various
2259 :			Description:
2260 :
2261 :			- fixed bug in Real.toLargeInt
2262 :			- fixed bug in Posix.ProcEnv.times
2263 :			- changed inputLine functions to return an option
2264 :			- minor installer improvements / bugfixes
2265 :			- changed default @SMLalloc parameter for x86/celeron to 64k
2266 :
2267 :			----------------------------------------------------------------------
2268 :			Name: Matthias Blume (blume (at) tti - c (dot) org)
2269 :	mblume	1356	Date: 2003/09/09 22:00:00 CDT
2270 :			Tag: Release_110_43
2271 :			Description:
2272 :
2273 :			New working release 110.43. New bootfiles.
2274 :
2275 :			----------------------------------------------------------------------
2276 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2277 :	mblume	1354	Date: 2003/09/09 19:20:00 CDT
2278 :			Tag: blume-20030909-installer
2279 :			Description:
2280 :
2281 :			Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
2282 :			Modified config/install.bat to take advantage of it. Also modified
2283 :			config/install.sh (and called it config/new-install.sh) to take advantage
2284 :			of it on Unix systems. (The SML code is (supposed to be) platform-
2285 :			independent.)
2286 :
2287 :			The installer can now install everything under Win32
2288 :			as well as under *nix as long as it compiles.
2289 :
2290 :			Other changes:
2291 :
2292 :			- made CML compile again under Win32
2293 :			- made eXene compile under Win32 (by providing a fake structure UnixSock
2294 :			and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
2295 :			- fixed a bug in nowhere: it assumed that type OS.Process.status is the
2296 :			same as type int; under Win32 it isn't
2297 :			- fixed some slice-related problems in the win32-specific parts of CML
2298 :			- added a functor argument "sameVol" to os-path-fn.sml in the Basis
2299 :			(under Win32, the volume name is case-insensitive, and the
2300 :			OS.Path code compares volume names for equality)
2301 :
2302 :			----------------------------------------------------------------------
2303 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2304 :	mblume	1353	Date: 2003/09/08 11:55:00 CDT
2305 :			Tag: blume-20030908-fullpath
2306 :			Description:
2307 :
2308 :			Made Win32 version of OS.FileSys.fullPath return current directory
2309 :			when given an empty string. This is what the spec says, and incidentally,
2310 :			CM depends on it. (CM otherwise goes into an infinite loop in certain
2311 :			cases when presented with the name of a non-existing .cm file.)
2312 :
2313 :			----------------------------------------------------------------------
2314 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2315 :	mblume	1350	Date: 2003/09/04 16:30:00 CDT
2316 :	mblume	1352	Tag: blume-20030905-slices-etc
2317 :	mblume	1350	Description:
2318 :
2319 :			1. Changed interface to vectors and arrays in Basis to match
2320 :			(draft) Basis spec.
2321 :			2. Added signatures and implementations of slices according to
2322 :			Basis spec.
2323 :			3. Edited source code throughout the system to make it compile again
2324 :			under 1. and 2. (In some cases code had to be added to have it
2325 :			match the new signatures.)
2326 :			4. MLRISC should be backward-compatible: the copies of the originals
2327 :			of files that needed to change under 3. were retained, the .cm files
2328 :			check the compiler version number and use old versions when
2329 :			appropriate.
2330 :			5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
2331 :			dirstream -> string option (in accordance with Basis spec).
2332 :			6. When generating code that counts lines, ml-lex used function
2333 :			CharVector.foldli, taking advantage of its old interface.
2334 :			This has been replaced with the corresponding code from
2335 :			CharVectorSlice. (html-lex must be re-lexed!)
2336 :			7. BitArray in smlnj-lib/Util has been extended/modified to match the
2337 :			new MONO_ARRAY signature. (Do we need BitArraySlice?)
2338 :			8. Removed temporary additions (fromInternal, toInternal) from the
2339 :			(now obsolete) IntInf in smlnj-lib/Util.
2340 :			9. Cleaned up structure Byte.
2341 :			10. Added localOffset, scan, and fromString to Date (according to spec).
2342 :			Cleaned/corrected implementation of Date.
2343 :			(Still need to check for correctness; implement better canonicalizeDate.)
2344 :			11. Added "scan" to signature IEEE_REAL.
2345 :			12. Some improvements to IntInf [in particular: efficiency-hack for
2346 :			mod and rem when second operand is 2 (for parity checks).]
2347 :			13. Changed representation of type Time.time, using a single IntInf.int
2348 :			value counting microseconds. This considerably simplified the
2349 :			implementation of structure Time. We now support negative time
2350 :			values; scan and fromString handle signs.
2351 :			14. Functor PrimIO now takes two additional arguments (VectorSlice and
2352 :			ArraySlice).
2353 :
2354 :			----------------------------------------------------------------------
2355 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2356 :	mblume	1347	Date: 2003/08/28 17:00:00 CDT
2357 :			Tag: blume-20030828-intinf
2358 :			Description:
2359 :
2360 :			This is a major update which comes with a version number bump
2361 :			(110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
2362 :			and an implementation of IntInf in the Basis.
2363 :
2364 :			There are a fairly large number of related changes and updates throughout
2365 :			the system:
2366 :
2367 :			Basis:
2368 :			- Implemented IntInf.
2369 :			- Made LargeInt a projection of IntInf (by filtering through INTEGER).
2370 :	mblume	1348	- Added some missing Real64 operations, most notably Real.toLargeInt.
2371 :	mblume	1347	- Added FixedInt as a synonym for Int32.
2372 :
2373 :			compiler:
2374 :			* Added support for a built-in intinf type.
2375 :			- literals
2376 :			- pattern matching
2377 :			- conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
2378 :			- overloading on literals and operations
2379 :
2380 :			This required adding a primitive type intinf, some additional
2381 :			primops, and implementations for several non-trivial intinf
2382 :			operations in Core. (The intinf type is completely abstract
2383 :			to the compiler; all operations get delegated back to the Core.)
2384 :
2385 :			* Intinf equality is handled by polyequal. However, the compiler
2386 :			does not print its usual warning in this case (since polyequal
2387 :			is the right thing to do there).
2388 :
2389 :			* Improved the organization of structure InlineT.
2390 :
2391 :			* A word about conversion primops:
2392 :			If conversions involving intinf do not cancel out during
2393 :	mblume	1348	CPS contract, then the compiler must insert calls to Core functions.
2394 :	mblume	1347	Since all core access must be resolved already during the FLINT
2395 :			translate phase, it would be too late a the time of CPS contract
2396 :	mblume	1348	to add new Core calls. For this reason, conversion primops
2397 :	mblume	1347	for intinf carry two arguments: 1. the numeric argument that
2398 :			they are supposed to convert, and 2. the Core function that
2399 :			can help with this conversion if necessary. If CPS contract
2400 :	mblume	1348	eliminates a primop, then the associated Core function becomes
2401 :			dead and goes away. Intinf conversion primops that do not get
2402 :			eliminated by CPS contract get rewritten into calls of their
2403 :			core functions by a separate, new phase.
2404 :	mblume	1347
2405 :			interactive system:
2406 :			- Control.Print.intinfDepth controls max length of intinf constants
2407 :			being printed. (Analogous to Control.Print.stringDepth.)
2408 :			- Cleanup in printutil and pputil: got rid of unused stuff and
2409 :			duplicates; replaced some of the code with code that makes better
2410 :			use of library functionality.
2411 :
2412 :			CM:
2413 :			Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
2414 :			are no longer silent.
2415 :
2416 :			CKIT:
2417 :			Fixed mismatched uses of Int32 and LargeInt. I always decided
2418 :			in favor of LargeInt -- which is now the same as IntInf.
2419 :			CKIT-knowledgable people should check whether this is what's
2420 :			intended and otherwise change things back to using Int32 or
2421 :			FixedInt.
2422 :
2423 :			Throughout the code:
2424 :	mblume	1348	Started using IntInf.int literals and built-in operations
2425 :	mblume	1347	(e.g., comparison with 0) where this seems appropriate.
2426 :
2427 :
2428 :			----------------------------------------------------------------------
2429 :	macqueen	1343	Name: Dave MacQueen (dbm@cs.uchicago.edu)
2430 :			Date: 2003/08/13 11:36:00 CDT
2431 :			Tag: dbm-20030813-mcz-merge1
2432 :			Description:
2433 :
2434 :			Merging changes from the mcz-branch development branch into trunk.
2435 :			These changes involve replacement of the emulated old prettyprinter
2436 :			interface with direct use of the SML/NJ Lib PP library, and fixing
2437 :			of a couple of bugs (895, 1186) relating to error messages. A new
2438 :			prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
2439 :			has been added.
2440 :
2441 :			----------------------------------------------------------------------
2442 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2443 :	mblume	1342	Date: 2003/08/11 15:45:00 CDT
2444 :			Tag: blume-20030811-windows
2445 :			Description:
2446 :
2447 :			Version number bumped to 110.42.9. NEW BOOTFILES!!!
2448 :
2449 :			http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
2450 :
2451 :			This patch restores SML/NJ's ability to run under win32. There are a
2452 :			number of changes, including fixes for several bugs that had gone
2453 :			unnoticed until now:
2454 :
2455 :			- uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
2456 :			trying to run the win32 version from within cygwin.)
2457 :
2458 :			- There are a number of simple .bat scripts that substitute for their
2459 :			corresponding Unix shell-scripts. (See below.)
2460 :
2461 :			- The internals of ml-build have been modified slightly. The main
2462 :			difference is that instead of calling ".link-sml" (or link-sml.bat)
2463 :			using OS.Process.system, the ML process delegates this task back
2464 :			to the script. Otherwise problems arise in mixed environments such
2465 :			as Cygwin where scripts look and work like Unix scripts, but
2466 :			where OS.Process.system cannot run them.
2467 :
2468 :			- In CM, the srcpath pickler used native pathname syntax -- which
2469 :			is incorrect in the case of cross-compilation. The new pickle format
2470 :			is independent of platform-specific naming conventions.
2471 :
2472 :			- Path configuration files (such as lib/pathconfig) can now choose
2473 :			between native and standard syntax. Placing a line of the form
2474 :
2475 :			standard!
2476 :
2477 :			into the file causes all subsequent paths to be interpreted using
2478 :			CM standard pathname syntax (= Unix conventions); a line
2479 :
2480 :			native!
2481 :
2482 :			switches back to native style. This was needed so that
2483 :			path config files can be written portably, see src/system/pathconfig.
2484 :
2485 :			- Runtime system:
2486 :
2487 :			- win32-filesys.c: get_file_time and set_file_time now
2488 :			access modification time, not creation time.
2489 :
2490 :			- I/O code made aware of new array representation.
2491 :
2492 :			- Bug fixes in X86.prim.masm.
2493 :
2494 :			- src/system/makeml made aware of win32. (For use under cygwin
2495 :			and other Unix-environments for windows.)
2496 :
2497 :			- In Basis, fixed off-by-one error in win32-io.sml (function vecF)
2498 :			which caused BinIO.inputAll to fail consistently.
2499 :
2500 :			.bat scripts:
2501 :
2502 :			Windows .bat scripts assume that SMLNJ_HOME is defined.
2503 :
2504 :			- sml.bat, ml-yacc.bat, ml-lex.bat: Driver scripts for standalone
2505 :			applications (sml, ml-yacc, ml-lex).
2506 :			- ml-build.bat: analogous to ml-build.
2507 :			- config\install.bat: Analogous to config/install.sh. This requires
2508 :			that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
2509 :			(nmake etc. must be on the path, and vcvars32 must have been run.)
2510 :			Moreover, sources for ml-lex and ml-yacc need to exist under src,
2511 :			and the bootfile hierarchy must have been unpacked under
2512 :			sml.boot.x86-win32.
2513 :			The script is very primitive and does a poor job at error checking.
2514 :			It only installs the base system, ml-lex, and ml-yacc. No other
2515 :			libraries are being installed (i.e., you get only those that
2516 :			are part of the compiler.)
2517 :			- link-sml.bat: analogous to .link-sml, but not currently used
2518 :
2519 :			Unrelated bug fixes:
2520 :
2521 :			- ml-nlffigen now exports structures ST_* corresponding to incomplete
2522 :			types.
2523 :			- Added getDevice to PP/src/pp-debug-fn.sml. (Would not compile
2524 :			otherwise.)
2525 :
2526 :			----------------------------------------------------------------------
2527 :	macqueen	1337	Name: Dave MacQueen (macqueen@cs.uchicago.edu)
2528 :			Date: 2003/06/17
2529 :			Tag: macqueen-20030617-bug895
2530 :			Description:
2531 :
2532 :			Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
2533 :			Tag will be used for new development branch (mcz-branch) for
2534 :			use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
2535 :
2536 :			----------------------------------------------------------------------
2537 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2538 :	mblume	1335	Date: 2003/05/27 16:55:00 CDT
2539 :			Tag: blume-20030527-polyeq
2540 :			Description:
2541 :
2542 :			Tried to eliminated most cases of polymorphic equality.
2543 :
2544 :			----------------------------------------------------------------------
2545 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2546 :	mblume	1334	Date: 2003/05/21 17:45:00 CDT
2547 :			Tag: blume-20030517-complete
2548 :			Description:
2549 :
2550 :			Two changes:
2551 :
2552 :			1. Added a flag for controlling whether non-exhaustive bindings will
2553 :			be treated as errors (default is false).
2554 :			2. Cleaned up the *entire* source tree so that CMB.make goes through
2555 :			without a single non-exhaustive match- or bind warning.
2556 :
2557 :			----------------------------------------------------------------------
2558 :	mblume	1368	Name: Matthias Blume (blume (at) tti - c (dot) org)
2559 :	mblume	1332	Date: 2003/05/17 10:20:00 CDT
2560 :			Tag: blume-20030517-absyn
2561 :			Description:
2562 :
2563 :			1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
2564 :
2565 :			This mainly affects the quality of error messages. However, some
2566 :			of the code is now more straightforward than before. (Treatment of
2567 :			the above four constructs in translate.sml is much simpler than
2568 :			the "macro-expansion" that was going on before. Plus, the mach-
2569 :			compiler no longer gets invoked just to be able to compile an
2570 :			if-expression.)
2571 :
2572 :			2. The ErrorMsg.Error exception is now caught and absorbed by the
2573 :			interactive loop.
2574 :
2575 :			----------------------------------------------------------------------
2576 :	allenleung	1327	Name: Allen Leung
2577 :			Date: 2003/05/16 13:05:00 CDT
2578 :			Tag: leunga-20030516-cygwin-runtime
2579 :			Description:
2580 :
2581 :	blume	2155	Ported the runtime system to cygwin, which uses the unix
2582 :	allenleung	1327	x86-unix bin files. Missing/buggy features:
2583 :
2584 :	blume	2155	o getnetbyname, getnetbyaddr: these functions seem to be missing in
2585 :	allenleung	1327	the Cygwin library.
2586 :			o Ctrl-C handling may be flaky.
2587 :			o Windows system calls and Windows I/O are not supported.
2588 :
2589 :			A new set of binfiles is located at:
2590 :
2591 :			http://www.dorsai.org/~leunga/boot.x86-unix.tgz
2592 :
2593 :			This is only needed for bootstrapping the cygwin version of smlnj.
2594 :			Other x86 versions can use the existing binfiles.
2595 :
2596 :			----------------------------------------------------------------------
2597 :	mblume	1317	Name: Matthias Blume
2598 :			Date: 2003/04/08 15:42:00 CDT
2599 :			Tag: blume-20030408-listpair
2600 :			Description:
2601 :
2602 :			1. Added a target 'mlrisc' to installer.
2603 :
2604 :			2. Added missing elements to structure ListPair.
2605 :
2606 :			----------------------------------------------------------------------
2607 :	leunga	1296	Name: Allen Leung
2608 :			Date: 2003/01/07 10:40:00 EST
2609 :			Tag: leunga-20030107-int-rem
2610 :			Description:
2611 :
2612 :			Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
2613 :			The arguments to the SUBL instruction were swapped.
2614 :
2615 :			----------------------------------------------------------------------
2616 :	blume	1229	Name: Matthias Blume
2617 :	blume	1294	Date: 2002/12/12 16:25:00 EST
2618 :			Tag: blume-20021212-risc-ra
2619 :			Description:
2620 :
2621 :			Fixed a serious bug in the rewrite code for FP spilling/reloading that
2622 :			sent the RA into an infinite loop when floating point registers get
2623 :			spilled. (Because of this bug, e.g., nucleic stopped compiling between
2624 :			110.37 and 110.38.)
2625 :			There was another set of potential problems related to the handling of
2626 :			MLRISC annotations (but those did not yet cause real problems, apparently).
2627 :
2628 :			----------------------------------------------------------------------
2629 :			Name: Matthias Blume
2630 :	blume	1291	Date: 2002/12/06 22:40:00 EST
2631 :			Tag: blume-20021206-cm-fileid
2632 :			Description:
2633 :
2634 :			Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
2635 :			This fixes the problem of CM getting confused by files that suddenly
2636 :			change their identity (e.g., by getting unlinked and recreated by some
2637 :			text editor such as vi). There might be a better/cheaper/cleaner way
2638 :			of doing this, but for now this will have to do.
2639 :
2640 :			----------------------------------------------------------------------
2641 :			Name: Matthias Blume
2642 :	blume	1288	Date: 2002/10/28 09:50:00 EST
2643 :	blume	2155	Tag: blume-20021028-typecheck
2644 :	blume	1288	Description:
2645 :
2646 :			Exported structure Typecheck from $smlnj/viscomp/core.cm.
2647 :
2648 :			----------------------------------------------------------------------
2649 :			Name: Matthias Blume
2650 :	blume	1282	Date: 2002/10/17 09:10:00 EDT
2651 :	blume	1279	Tag: Release_110_42
2652 :			Description:
2653 :
2654 :	blume	1282	In good old tradition, there has been a slight hiccup so that we have
2655 :			to patch 110.42 after the fact. The old release tag has been replaced
2656 :			(see below).
2657 :
2658 :			The change solves a problem with two competing approaches the
2659 :			configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
2660 :			each other's way.
2661 :
2662 :			This change only affects the runtime system code and the installer script.
2663 :			(No new bootfiles.)
2664 :
2665 :			----------------------------------------------------------------------
2666 :			Name: Matthias Blume
2667 :			Date: 2002/10/16 12:00:00 EDT
2668 :			Tag: Release_110_42_removed
2669 :			Description:
2670 :
2671 :	blume	1279	New working release. New bootfiles.
2672 :
2673 :			----------------------------------------------------------------------
2674 :			Name: Matthias Blume
2675 :	blume	1273	Date: 2002/10/10 13:10:00 EDT
2676 :			Tag: blume-20021010-ppc-divs
2677 :			Description:
2678 :
2679 :			The mltree operator DIVS must be implemented with an overflow check on
2680 :			the PPC because the hardware indicates divide-by-zero using "overflow" as
2681 :			well.
2682 :
2683 :			----------------------------------------------------------------------
2684 :			Name: Matthias Blume
2685 :	blume	1261	Date: 2002/07/23 11:45:00
2686 :			Tag: blume-20020723-smlnj-home
2687 :			Description:
2688 :
2689 :			Sml now senses the SMLNJ_HOME environment variable. If this is set,
2690 :			then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
2691 :			CM_PATHCONFIG is also set), the path configuration file is assumed
2692 :			to be in $SMLNJ_HOME/lib/pathconfig. This way one can easily move
2693 :			the entire tree to some other place and everything will "just work".
2694 :
2695 :			(Companion commands such as ml-build and ml-makedepend also sense this
2696 :			variable.)
2697 :
2698 :			----------------------------------------------------------------------
2699 :			Name: Matthias Blume
2700 :	blume	1259	Date: 2002/07/12 21:19:00 EDT
2701 :			Tag: blume-20020712-liveness
2702 :			Description:
2703 :
2704 :			Exported two useful "step" functions from liveness module (MLRISC).
2705 :
2706 :			----------------------------------------------------------------------
2707 :			Name: Matthias Blume
2708 :	blume	1253	Date: 2002/07/05 16:00 EDT
2709 :			Tag: Release_110_41
2710 :			Description:
2711 :
2712 :			New working release. New bootfiles.
2713 :
2714 :			----------------------------------------------------------------------
2715 :			Name: Matthias Blume
2716 :	blume	1250	Date: 2002/07/05 10:25:00 EDT
2717 :			Tag: blume-20020705-btimp
2718 :			Description:
2719 :
2720 :			Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
2721 :			other clients can set up backtracing support.
2722 :
2723 :			----------------------------------------------------------------------
2724 :			Name: Matthias Blume
2725 :	blume	1249	Date: 2002/06/25 17:23:00 EDT
2726 :			Tag: blume-20020625-fpmax
2727 :			Description:
2728 :
2729 :			Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
2730 :			case. (The sense of the isNaN test was reversed -- which made min and
2731 :			max always return their first argument.)
2732 :
2733 :			----------------------------------------------------------------------
2734 :			Name: Matthias Blume
2735 :	blume	1240	Date: 2002/06/11
2736 :			Tag: blume-20020611-unixpath
2737 :			Description:
2738 :
2739 :			Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
2740 :
2741 :			----------------------------------------------------------------------
2742 :			Name: Matthias Blume
2743 :	blume	1238	Date: 2002/06/10 16:35:00 EDT
2744 :			Tag: blume-20020610-ieeereal
2745 :			Description:
2746 :
2747 :			I back-ported my implementation of IEEEReal.fromString from the
2748 :			idlbasis-devel branch so that we can test it.
2749 :
2750 :			Another small change is that ppDec tries to give more information
2751 :			than just "<sig>" in the case of functors. However, this code is
2752 :			broken in some mysterious way if the functor's body's signature
2753 :			has not been declared by ascription but gets inferred from the
2754 :			implementation. This needs fixing...
2755 :
2756 :			----------------------------------------------------------------------
2757 :			Name: Matthias Blume
2758 :	blume	1229	Date: 2002/05/31
2759 :			Tag: blume-20020531-btrace-mode
2760 :			Description:
2761 :
2762 :			Resurrected SMLofNJ.Internals.BTrace.mode. (It accidentally fell by
2763 :			the wayside when I switched over to using Controls everywhere.)
2764 :
2765 :			----------------------------------------------------------------------
2766 :	george	1222	Name: Lal George
2767 :			Date: 2002/05/23 12:21:40 EDT
2768 :			Tag: george-20020523-visual-labels
2769 :			Description:
2770 :
2771 :			Labels are now displayed in the graphical output to make
2772 :			the fall-through and target blocks obvious.
2773 :
2774 :			----------------------------------------------------------------------
2775 :	blume	1204	Name: Matthias Blume
2776 :	blume	1220	Date: 2002/05/22 11:03:00 EDT
2777 :			Tag: blume-20020522-shrink
2778 :			Description:
2779 :
2780 :			John tweaked yesterday's fix for 1131 to handle an out-of-memory
2781 :			situation that comes up when allocating huge arrays.
2782 :
2783 :			----------------------------------------------------------------------
2784 :			Name: Matthias Blume
2785 :	blume	1215	Date: 2002/05/21 16:00:00 EDT
2786 :			Tag: Release_110_40
2787 :			Description:
2788 :
2789 :			New working release (110.40). New bootfiles.
2790 :
2791 :			[Also: John Reppy fixed GC bug 1131.]
2792 :
2793 :			----------------------------------------------------------------------
2794 :			Name: Matthias Blume
2795 :	blume	1212	Date: 2002/05/21 12:35:00 EDT
2796 :			Tag: blume-20020521-cmdoc
2797 :			Description:
2798 :
2799 :			CM documentation update.
2800 :
2801 :			----------------------------------------------------------------------
2802 :			Name: Matthias Blume
2803 :	blume	1211	Date: 2002/05/21 10:55:00 EDT
2804 :			Tag: blume-20020521-misc
2805 :			Description:
2806 :
2807 :			- John tweaked runtime to be silent on heap export (except when
2808 :			GC messages are on).
2809 :			- I added a few more things (cross-compiling versions of CMB) to
2810 :			config/preloads (as suggestions).
2811 :
2812 :			----------------------------------------------------------------------
2813 :			Name: Matthias Blume
2814 :	blume	1208	Date: 2002/05/20 22:25:00 EDT
2815 :			Tag: blume-20020520-controls
2816 :			Description:
2817 :
2818 :			- Added ControlUtil structure to control-lib.cm.
2819 :			- Use it throughout.
2820 :			- Used Controls facility to define MLRISC controls (as opposed to
2821 :			registering MLRISC control ref cells with Controls after the fact)
2822 :			- Fixed messed-up controls priorities.
2823 :
2824 :			* Removed again all the stuff from config/preloads that one wouldn't
2825 :			be able to preload at the time the initial heap image is built.
2826 :			(Many libraries, e.g., CML, do not exist yet at this time. The
2827 :			only libraries that can be preloaded via config/preloads are those
2828 :			that come bundled with the bootfiles.)
2829 :
2830 :			----------------------------------------------------------------------
2831 :			Name: Matthias Blume
2832 :	blume	1204	Date: 2002/05/20 10:59:00 EDT
2833 :			Tag: blume-20020520-preloads
2834 :			Description:
2835 :
2836 :			Added a lot of commented-out suggestions for things to be included
2837 :			in config/preloads.
2838 :
2839 :			----------------------------------------------------------------------
2840 :	leunga	1203	Name: Allen Leung
2841 :			Date: 2002/05/18 14:20:00 EDT
2842 :			Tag: leunga-20020518-mdl
2843 :			Description:
2844 :
2845 :			o Made the mdl tool stuff compile and run again.
2846 :			o I've disabled all the stuff that depends on RTL specifications; they
2847 :			are all badly broken anyway.
2848 :
2849 :			----------------------------------------------------------------------
2850 :	blume	1201	Name: Matthias Blume
2851 :			Date: 2002/05/17 16:49:00 EDT
2852 :			Tag: blume-20020517-controls
2853 :			Description:
2854 :
2855 :			0. John Reppy made several modifications to the SML/NJ library.
2856 :			In particular, there is a shiny new controls-lib.cm.
2857 :
2858 :			1. Pushed new controls interface through compiler so that everything
2859 :			compiles again.
2860 :
2861 :			2. Added FormatComb and FORMAT_COMB to the CML version of the
2862 :			SML/NJ library (so that CML compiles again).
2863 :
2864 :			3. Modified init scripts because XXX_DEFAULT environment variables
2865 :			are no longer with us. (Boot-time initialization is now done
2866 :			using the same environment variables that are also used for
2867 :			startup-time initialization of controls.)
2868 :
2869 :			----------------------------------------------------------------------
2870 :	george	1192	Name: Lal George
2871 :			Date: 2002/05/15 09:20:10 EDT
2872 :			Tag: george-20020515-pseudo-op-decls
2873 :			Description:
2874 :
2875 :			All pseudo-ops emitted before the first segment declaration
2876 :			such as TEXT, DATA, and BSS directives are assumed to be global
2877 :			declarations and are emitted first in the assembly file. This is
2878 :			useful in a number of situations where one has pseudo-ops that are not
2879 :			specific to any segment, and also works around the constraint that one
2880 :			cannot have client pseudo-ops in the TEXT segment.
2881 :
2882 :			Because no segment is associated with these declarations it is
2883 :			an error to allocate any space or objects before the first segment
2884 :			directive and an exception will be raised. However, we cannot make
2885 :			this check for client pseudo-ops.
2886 :
2887 :			These top level declarations are a field in the CFG graph_info.
2888 :			In theory you can continue to add to this field after the CFG has been
2889 :			built -- provided you know what you are doing;-)
2890 :
2891 :			----------------------------------------------------------------------
2892 :	blume	1175	Name: Matthias Blume
2893 :	blume	1190	Date: 2002/05/13 16:40:00 EDT
2894 :			Tag: blume-20020513-pp-etc
2895 :			Description:
2896 :
2897 :			A few minor bugfixes:
2898 :
2899 :			- Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
2900 :			(Bogus printouts for redefined bindings still occur. Compiler
2901 :			bug should no longer occur now. We need to redo the prettyprinter
2902 :			from scratch.)
2903 :
2904 :			- CM pathname printer now also adds escape sequences for ( and )
2905 :
2906 :			- commend and docu fixes for ml-nlffi
2907 :
2908 :			----------------------------------------------------------------------
2909 :			Name: Matthias Blume
2910 :	blume	1189	Date: 2002/05/10 16:40:00 EDT
2911 :			Tag: blume-20020510-erg-textio
2912 :			Description:
2913 :
2914 :			Applied the following bugfix provided by Emden Gansner:
2915 :
2916 :			Output is corrupted when outputSubstr is used rather than output.
2917 :
2918 :	blume	2155	The problem occurs when a substring
2919 :	blume	1189
2920 :			ss = (s, dataStart, dataLen)
2921 :
2922 :	blume	2155	where dataStart > 0, fills a stream buffer with avail bytes left.
2923 :			avail bytes of s, starting at index dataStart, are copied into the
2924 :	blume	1189	buffer, the buffer is flushed, and then the remaining dataLen-avail
2925 :	blume	2155	bytes of ss are copied into the beginning of the buffer. Instead of
2926 :			starting this copy at index dataStart+avail in s, the current code
2927 :	blume	1189	starts the copy at index avail.
2928 :
2929 :			Fix:
2930 :			In text-io-fn.sml, change line 695 from
2931 :			val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
2932 :	blume	2155	to
2933 :	blume	1189	val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
2934 :
2935 :			----------------------------------------------------------------------
2936 :			Name: Matthias Blume
2937 :	blume	1186	Date: 2002/04/12 13:55:00 EDT
2938 :			Tag: blume-20020412-assyntax
2939 :			Description:
2940 :
2941 :			1. Grabbed newer assyntax.h from the XFree86 project.
2942 :			2. Fiddled with how to compile X86.prim.asm without warnings.
2943 :			3. (Very) Minor cleanup in CM.
2944 :
2945 :			----------------------------------------------------------------------
2946 :			Name: Matthias Blume
2947 :	blume	1185	Date: 2002/04/01 (no joke!) 17:07:00 EST
2948 :			Tag: blume-20020401-x86div
2949 :			Description:
2950 :
2951 :			Added full support for div/mod/rem/quot on the x86, using the machine
2952 :			instruction's two results (without clumsily recomputing the remainder)
2953 :			directly where appropriate.
2954 :
2955 :			Some more extensive power-of-two support was added to the x86 instruction
2956 :			selector (avoiding expensive divs, mods, and muls where they can be
2957 :			replaced with cheaper shifts and masks). However, this sort of thing
2958 :			ought to be done earlier, e.g., within the CPS optimizer so that
2959 :			all architectures benefit from it.
2960 :
2961 :			The compiler compiles to a fixed point, but changes might be somewhat
2962 :			fragile nevertheless. Please, report any strange things that you might
2963 :			see wrt. div/mod/quot/rem...
2964 :
2965 :			----------------------------------------------------------------------
2966 :			Name: Matthias Blume
2967 :	blume	1184	Date: 2002/03/29 17:22:00
2968 :			Tag: blume-20020329-div
2969 :			Description:
2970 :
2971 :			Fixed my broken div/mod logic. Unfortunately, this means that the
2972 :			inline code for div/mod now has one more comparison than before.
2973 :			Fast paths (quotient > 0 or remainder = 0) are not affected, though.
2974 :			The problem was with quotient = 0, because that alone does not tell
2975 :			us which way the rounding went. One then has to look at whether
2976 :			remainder and divisor have the same sign... :(
2977 :
2978 :			Anyway, I replaced the bootfiles with fresh ones...
2979 :
2980 :			----------------------------------------------------------------------
2981 :			Name: Matthias Blume
2982 :	blume	1183	Date: 2002/03/29 14:10:00 EST
2983 :			Tag: blume-20020329-inlprims
2984 :			Description:
2985 :
2986 :			NEW BOOTFILES!!! Version number bumped to 110.39.3.
2987 :
2988 :			Primops have changed. This means that the bin/boot-file formats have
2989 :			changed as well.
2990 :
2991 :			To make sure that there is no confusion, I made a new version.
2992 :
2993 :
2994 :			CHANGES:
2995 :
2996 :			* removed REMT from mltree (remainder should never overflow).
2997 :
2998 :			* added primops to deal with divisions of all flavors to the frontend
2999 :
3000 :			* handled these primops all the way through so they map to their respective
3001 :			MLRISC support
3002 :
3003 :			* used these primops in the implementation of Int, Int32, Word, Word32
3004 :
3005 :			* removed INLDIV, INLMOD, and INLREM as they are no longer necessary
3006 :
3007 :			* parameterized INLMIN, INLMAX, and INLABS by a numkind
3008 :
3009 :			* translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
3010 :			floating point
3011 :
3012 :			* used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
3013 :			and Real (but Real.abs maps to a separate floating-point-only primop)
3014 :
3015 :
3016 :			TODO items:
3017 :
3018 :			* Hacked Alpha32 instruction selection, disabling the selection of REMx
3019 :			instructions because the machine instruction encoder cannot handle
3020 :			them. (Hppa, PPC, and Sparc instruction selection did not handle
3021 :			REM in the first place, and REM is supported by the x86 machine coder.)
3022 :
3023 :			* Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
3024 :			selection phase. (The two can be streamlined because the hardware
3025 :			delivers both quotient and remainder at the same time anyway.)
3026 :
3027 :			* Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
3028 :			(Currently the behavior is inconsistent both across architectures and
3029 :			wrt. the draft Basis spec.)
3030 :
3031 :			* Word8 should eventually be handled natively, too.
3032 :
3033 :			* There seems to be one serious bug in mltree-gen.sml. It appears, though,
3034 :			as if there currently is no execution path that could trigger it in
3035 :			SML/NJ. (The assumptions underlying functions arith and promotable do not
3036 :			hold for things like multiplication and division.)
3037 :
3038 :			----------------------------------------------------------------------
3039 :			Name: Matthias Blume
3040 :	blume	1181	Date: 2002/03/27 16:27:00 EST
3041 :			Tag: blume-20020327-mlrisc-divisions
3042 :			Description:
3043 :
3044 :			Added support for all four division operations (ML's div, mod, quot,
3045 :			and rem) to MLRISC. In the course of doing so, I also rationalized
3046 :			the naming (no more annoying switch-around of DIV and QUOT), by
3047 :			parameterizing the operation by div_rounding_mode (which can be either
3048 :			DIV_TO_ZERO or DIV_TO_NEGINF).
3049 :
3050 :			The generic MLTreeGen functor takes care of compiling all four
3051 :			operations down to only round-to-zero div.
3052 :
3053 :			Missing pieces:
3054 :
3055 :			* Doing something smarter than relying on MLTreeGen on architectures
3056 :			like, e.g., the x86 where hardware division delivers both quotient and
3057 :			remainder at the same time. With this, the implementation of the
3058 :			round-to-neginf operations could be further streamlined.
3059 :
3060 :			* Remove inlining support for div/mod/rem from the frontend and replace it
3061 :			with primops that get carried through to the backend. Do this for all
3062 :			int and word types.
3063 :
3064 :			----------------------------------------------------------------------
3065 :			Name: Matthias Blume
3066 :	blume	1180	Date: 2002/03/25 17:25:00 EST
3067 :			Tag: blume-20020325-divmod
3068 :			Description:
3069 :
3070 :			I improved (hopefully without breaking them) the implementation of Int.div,
3071 :			Int.mod, and Int.rem. For this, the code in translate.sml now takes
3072 :			advantage of the following observations:
3073 :
3074 :			Let q = x quot y r = x rem y
3075 :			d = x div y m = x mod y
3076 :
3077 :			where "quot" is the round-to-zero version of integer division that
3078 :			hardware usually provides. Then we have:
3079 :
3080 :			r = x - q * y where neither the * nor the - will overflow
3081 :			d = if q >= 0 orelse x = q * y then q else q - 1
3082 :			where neither the * nor the - will overflow
3083 :			m = if q >= 0 orelse r = 0 then r else r + y
3084 :			where the + will not overflow
3085 :
3086 :			This results in substantial simplification of the generated code.
3087 :			The following table shows the number of CFG nodes and edges generated
3088 :			for
3089 :			fun f (x, y) = x OPER y
3090 :			(* with OPER \in div, mod, quot, rem *)
3091 :
3092 :
3093 :			OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
3094 :			--------------------------------------------------------
3095 :			div | 24 | 39 | 12 | 16
3096 :			mod | 41 | 71 | 12 | 16
3097 :			quot | 8 | 10 | 8 | 10
3098 :			rem | 10 | 14 | 8 | 10
3099 :
3100 :
3101 :			----------------------------------------------------------------------
3102 :			Name: Matthias Blume
3103 :	blume	1179	Date: 2002/03/25 22:06:00 EST
3104 :			Tag: blume-20020325-cprotobug
3105 :			Description:
3106 :
3107 :			Fixed a bug in cproto (c prototype decoder).
3108 :
3109 :			----------------------------------------------------------------------
3110 :			Name: Matthias Blume
3111 :	blume	1178	Date: 2002/03/25 16:00:00 EST
3112 :			Tag: blume-20020325-raw-primops
3113 :			Description:
3114 :
3115 :			I did some cleanup to Allen's new primop code and
3116 :			replaced yesterday's bootfiles with new ones.
3117 :			(But they are stored in the same place.)
3118 :
3119 :			----------------------------------------------------------------------
3120 :			Name: Matthias Blume
3121 :	blume	1175	Date: 2002/03/24 22:40:00 EST
3122 :			Tag: blume-20020324-bootfiles
3123 :			Description:
3124 :
3125 :			Made the bootfiles that Allen asked for.
3126 :
3127 :			----------------------------------------------------------------------
3128 :	leunga	1174	Name: Allen Leung
3129 :			Date: 2002/03/23 15:50:00 EST
3130 :			Tag: leunga-20020323-flint-cps-rcc-primops
3131 :			Description:
3132 :
3133 :			1. Changes to FLINT primops:
3134 :
3135 :			(* make a call to a C-function;
3136 :			* The primop carries C function prototype information and specifies
3137 :			* which of its (ML-) arguments are floating point. C prototype
3138 :			* information is for use by the backend, ML information is for
3139 :			* use by the CPS converter. *)
3140 :			| RAW_CCALL of { c_proto: CTypes.c_proto,
3141 :			ml_args: ccall_type list,
3142 :			ml_res_opt: ccall_type option,
3143 :			reentrant : bool
3144 :			} option
3145 :			(* Allocate uninitialized storage on the heap.
3146 :			* The record is meant to hold short-lived C objects, i.e., they
3147 :	blume	2155	* are not ML pointers. With the tag, the representation is
3148 :	leunga	1174	* the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
3149 :			*)
3150 :	blume	2155	| RAW_RECORD of {tag:bool,sz:int}
3151 :	leunga	1174	and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
3152 :
3153 :			2. These CPS primops are now overloaded:
3154 :
3155 :			rawload of {kind:numkind}
3156 :			rawstore of {kind:numkind}
3157 :
3158 :			The one argument form is:
3159 :
3160 :			rawload {kind} address
3161 :
3162 :			The two argument form is:
3163 :	blume	2155
3164 :	leunga	1174	rawload {kind} [ml object, byte-offset]
3165 :
3166 :			3. RAW_CCALL/RCC now takes two extra arguments:
3167 :
3168 :			a. The first is whether the C call is reentrant, i.e., whether
3169 :			ML state should be saved and restored.
3170 :			b. The second argument is a string argument specifying the name of
3171 :			library and the C function.
3172 :
3173 :			These things are currently not handled in the code generator, yet.
3174 :
3175 :			4. In CProto,
3176 :
3177 :	blume	2155	An encoding type of "bool" means "ml object" and is mapped into
3178 :			C prototype of PTR. Note that "bool" is different than "string",
3179 :	leunga	1174	even though "string" is also mapped into PTR, because "bool"
3180 :			is assigned an CPS type of BOGt, while "string" is assigned INT32t.
3181 :
3182 :			5. Pickler/unpicker
3183 :
3184 :			Changed to handle RAW_RECORD and newest RAW_CCALL
3185 :
3186 :			6. MLRiscGen,
3187 :
3188 :			1. Changed to handle the new rawload/rawstore/rawrecord operators.
3189 :			2. Code for handling C Calls has been moved to a new module CPSCCalls,
3190 :			in the file CodeGen/cpscompile/cps-c-calls.sml
3191 :
3192 :			7. Added the conditional move operator
3193 :
3194 :			condmove of branch
3195 :
3196 :	blume	2155	to cps. Generation of this is still buggy so it is currently
3197 :	leunga	1174	disabled.
3198 :	blume	2155
3199 :	leunga	1174	----------------------------------------------------------------------
3200 :	george	1168	Name: Lal George
3201 :	blume	2155	Date: 2002/03/22 14:18:25 EST
3202 :	george	1171	Tag: george-20020322-cps-branch-prob
3203 :	george	1168	Description:
3204 :
3205 :	blume	2155	Implemented the Ball-Larus branch prediction-heuristics, and
3206 :	george	1168	incorporated graphical viewers for control flow graphs.
3207 :
3208 :	george	1171	Ball-Larus Heuristics:
3209 :	george	1168	---------------------
3210 :			See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
3211 :
3212 :			By design it uses the Dempster-Shafer theory for combining
3213 :			probabilities. For example, in the function:
3214 :
3215 :			fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
3216 :
3217 :			the ball-larus heuristics predicts that the n=0 is unlikely
3218 :			(OH-heuristic), and the 'then' branch is unlikely because of the
3219 :			RH-heuristic -- giving the 'then' branch an even lower combined
3220 :	george	1171	probability using the Dempster-Shafer theory.
3221 :	george	1168
3222 :			Finally, John Reppy's loop analysis in MLRISC, further lowers the
3223 :			probability of the 'then' branch because of the loop in the else
3224 :			branch.
3225 :
3226 :
3227 :			Graphical Viewing:
3228 :	blume	2155	------------------
3229 :	george	1168	I merely plugged in Allen's graphical viewers into the compiler. The
3230 :			additional code is not much. At the top level, saying:
3231 :
3232 :			Control.MLRISC.getFlag "cfg-graphical-view" := true;
3233 :
3234 :			will display the graphical view of the control flow graph just before
3235 :			back-patching. daVinci must be in your path for this to work. If
3236 :			daVinci is not available, then the default viewer can be changed
3237 :			using:
3238 :
3239 :			Control.MLRISC.getString "viewer"
3240 :
3241 :			which can be set to "dot" or "vcg" for the corresponding viewers. Of
3242 :			course, these viewers must be in your path.
3243 :
3244 :			The above will display the compilation unit at the level of clusters,
3245 :			many of which are small, boring, and un-interesting. Also setting:
3246 :
3247 :			Control.MLRISC.getInt "cfg-graphical-view_size"
3248 :
3249 :			will display clusters that are larger than the value set by the above.
3250 :
3251 :	blume	2155
3252 :	george	1168	----------------------------------------------------------------------
3253 :	blume	1159	Name: Matthias Blume
3254 :			Date: 2002/03/21 22:20:00 EST
3255 :			Tag: blume-20020321-kmp-bugfix
3256 :			Description:
3257 :
3258 :			Changed the interface to the KMP routine in PreString and fixed
3259 :			a minor bug in one place where it was used.
3260 :
3261 :			----------------------------------------------------------------------
3262 :	leunga	1156	Name: Allen Leung
3263 :	leunga	1158	Date: 2002/03/21 20:30:00 EST
3264 :			Tag: leunga-20020321-cfg
3265 :			Description:
3266 :
3267 :			Fixed a potential problem in cfg edge splitting.
3268 :
3269 :			----------------------------------------------------------------------
3270 :			Name: Allen Leung
3271 :	leunga	1156	Date: 2002/03/21 17:15:00 EST
3272 :			Tag: leunga-20020321-x86-fp-cfg
3273 :			Description:
3274 :
3275 :	blume	2155	1. Recoded the buggy parts of x86-fp.
3276 :	leunga	1156
3277 :			a. All the block reordering code has been removed.
3278 :			We now depend on the block placement phases to do this work.
3279 :
3280 :			b. Critical edge splitting code has been simplified and moved into the
3281 :			CFG modules, as where they belong.
3282 :
3283 :			Both of these were quite buggy and complex. The code is now much, much
3284 :			simpler.
3285 :
3286 :			2. X86 backend.
3287 :
3288 :			a. Added instructions for 64-bit support. Instruction selection for
3289 :			64-bit has not been committed, however, since that
3290 :	blume	2155	requires changes to MLTREE which haven't been approved by
3291 :	leunga	1156	Lal and John.
3292 :
3293 :	blume	2155	b. Added support for FUCOMI and FUCOMIP when generating code for
3294 :	leunga	1156	PentiumPro and above. We only generate these instructions in
3295 :			the fast-fp mode.
3296 :
3297 :	blume	2155	c. Added cases for JP and JNP in X86FreqProps.
3298 :
3299 :	leunga	1156	3. CFG
3300 :
3301 :			CFG now has a bunch of methods for edge splitting and merging.
3302 :
3303 :			4. Machine description.
3304 :
3305 :			John's simplification of MLTREE_BASIS.fcond broke a few machine
3306 :			description things:
3307 :
3308 :			rtl-build.{sig,sml} and hppa.mdl fixed.
3309 :
3310 :	blume	2155	NOTE: the machine description stuff in the repository is still broken.
3311 :			Again, I can't put my fixes in because that involves
3312 :			changes to MLTREE.
3313 :	leunga	1156
3314 :			----------------------------------------------------------------------
3315 :	blume	1145	Name: Matthias Blume
3316 :	blume	1155	Date: 2002/03/20 15:55:00 EST
3317 :			Tag: blume-20020320-kmp
3318 :			Description:
3319 :
3320 :			Implemented Knuth-Morris-Pratt string matching in PreString and used
3321 :			it for String.isSubstring, Substring.isSubstring, and
3322 :			Substring.position.
3323 :
3324 :			(Might need some stress-testing. Simple examples worked fine.)
3325 :
3326 :			----------------------------------------------------------------------
3327 :			Name: Matthias Blume
3328 :	blume	1152	Date: 2002/03/19 16:37:00 EST
3329 :			Tag: blume-20020319-witnesses
3330 :			Description:
3331 :
3332 :			Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
3333 :
3334 :			This implements a generic mechanism for changing constness qualifiers
3335 :			anywhere within big C types without resorting to outright "casts".
3336 :			(So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
3337 :			modify the constness at the outermost level.)
3338 :			The implementation of "convert" is based on the idea of "witness"
3339 :			values -- values that are not used by the operation but whose types
3340 :			"testify" to their applicability. On the implementation side, "convert"
3341 :			is simply a projection (returning its second curried argument). With
3342 :			cross-module inlining, it should not result in any machine code being
3343 :			generated.
3344 :
3345 :			----------------------------------------------------------------------
3346 :			Name: Matthias Blume
3347 :	blume	1148	Date: 2002/03/15 16:40:00 EST
3348 :			Tag: blume-20020315-basis
3349 :			Description:
3350 :
3351 :			Provided (preliminary?) implementations for
3352 :
3353 :			{String,Substring}.{concatWith,isSuffix,isSubstring}
3354 :
3355 :			and
3356 :
3357 :			Substring.full
3358 :
3359 :			Those are in the Basis spec but they were missing in SML/NJ.
3360 :
3361 :			----------------------------------------------------------------------
3362 :			Name: Matthias Blume
3363 :	blume	1145	Date: 2002/03/14 21:30:00 EST
3364 :			Tag: blume-20020314-controls
3365 :			Description:
3366 :
3367 :			Controls:
3368 :			---------
3369 :
3370 :			1. Factored out the recently-added Controls : CONTROLS stuff and put
3371 :			it into its own library $/controls-lib.cm. The source tree for
3372 :			this is under src/smlnj-lib/Controls.
3373 :
3374 :			2. Changed the names of types and functions in this interface, so they
3375 :			make a bit more "sense":
3376 :
3377 :			module -> registry
3378 :			'a registry -> 'a group
3379 :
3380 :			3. The interface now deals in ref cells only. The getter/setter interface
3381 :			is (mostly) gone.
3382 :
3383 :			4. Added a function that lets one register an already-existing ref cell.
3384 :
3385 :			5. Made the corresponding modifications to the rest of the code so that
3386 :			everything compiles again.
3387 :
3388 :			6. Changed the implementation of Controls.MLRISC back to something closer
3389 :			to the original. In particular, this module (and therefore MLRISC)
3390 :			does not depend on Controls. There now is some link-time code in
3391 :			int-sys.sml that registers the MLRISC controls with the Controls
3392 :			module.
3393 :
3394 :			CM:
3395 :			---
3396 :
3397 :			* One can now specify the lambda-split aggressiveness in init.cmi.
3398 :
3399 :			----------------------------------------------------------------------
3400 :	leunga	1142	Name: Allen Leung
3401 :			Date: 2002/03/13 17:30:00 EST
3402 :			Tag: leunga-20020313-x86-fp-unary
3403 :			Description:
3404 :
3405 :			Bug fix for:
3406 :
3407 :			> leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
3408 :			> Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
3409 :			> - fun f(x,(y,z)) = Real.~ y;
3410 :			> [autoloading]
3411 :			> [autoloading done]
3412 :			> fchsl (%eax), 184(%esp)
3413 :			> Error: MLRisc bug: X86MCEmitter.emitInstr
3414 :	blume	2155	>
3415 :	leunga	1142	> uncaught exception Error
3416 :			> raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
3417 :
3418 :			The problem was that the code generator did not generate any fp registers
3419 :			in this case, and the ra didn't know that it needed to run the X86FP phase to
3420 :			translate the pseudo fp instruction. This only happened with unary fp
3421 :			operators in certain situations.
3422 :
3423 :			----------------------------------------------------------------------
3424 :	blume	1137	Name: Matthias Blume
3425 :	blume	1140	Date: 2002/03/13 14:00:00 EST
3426 :			Tag: blume-20020313-overload-etc
3427 :			Description:
3428 :
3429 :			1. Added _overload as a synonym for overload for backward compatibility.
3430 :			(Control.overloadKW must be true for either version to be accepted.)
3431 :
3432 :			2. Fixed bug in install script that caused more things to be installed
3433 :			than what was requested in config/targets.
3434 :
3435 :			3. Made CM aware of the (_)overload construct so that autoloading
3436 :			works.
3437 :
3438 :			----------------------------------------------------------------------
3439 :			Name: Matthias Blume
3440 :	blume	1138	Date: 2002/03/12 22:03:00 EST
3441 :			Tag: blume-20020312-url
3442 :			Description:
3443 :
3444 :			Forgot to update BOOT and srcarchiveurl.
3445 :
3446 :			----------------------------------------------------------------------
3447 :			Name: Matthias Blume
3448 :	blume	1137	Date: 2002/03/12 17:30:00 EST
3449 :			Tag: blume-20020312-version110392
3450 :			Description:
3451 :
3452 :			Yet another version number bump (because of small changes to the
3453 :			binfile format). Version number is now 110.39.2. NEW BOOTFILES!
3454 :
3455 :			Changes:
3456 :
3457 :			The new pid generation scheme described a few weeks ago was overly
3458 :			complicated. I implemented a new mechanism that is simpler and
3459 :			provides a bit more "stability": Once CM has seen a compilation
3460 :			unit, it keeps its identity constant (as long as you do not delete
3461 :			those crucial CM/GUID/* files). This means that when you change
3462 :	blume	1145	an interface, compile, then go back to the old interface, and
3463 :	blume	1137	compile again, you arrive at the original pid.
3464 :
3465 :			There now also is a mechanism that instructs CM to use the plain
3466 :			environment hash as a module's pid (effectively making its GUID
3467 :			the empty string). For this, "noguid" must be specified as an
3468 :			option to the .sml file in question within its .cm file.
3469 :			This is most useful for code that is being generated by tools such
3470 :			as ml-nlffigen (because during development programmers tend to
3471 :			erase the tool's entire output directory tree including CM's cached
3472 :			GUIDs). "noguid" is somewhat dangerous (since it can be used to locally
3473 :			revert to the old, broken behavior of SML/NJ, but in specific cases
3474 :			where there is no danger of interface confusion, its use is ok
3475 :			(I think).
3476 :
3477 :			ml-nlffigen by default generates "noguid" annotations. They can be
3478 :			turned off by specifying -guid in its command line.
3479 :
3480 :			----------------------------------------------------------------------
3481 :	george	1136	Name: Lal George
3482 :			Date: 2002/03/12 12 14:42:36 EST
3483 :			Tag: george-20020312-frequency-computation
3484 :			Description:
3485 :	blume	2155
3486 :	george	1136	Integrated jump chaining and static block frequency into the
3487 :			compiler. More details and numbers later.
3488 :	leunga	1025
3489 :	george	1003	----------------------------------------------------------------------
3490 :	george	1133	Name: Lal George
3491 :			Date: 2002/03/11 11 22:38:53 EST
3492 :			Tag: george-20020311-jump-chain-elim
3493 :			Description:
3494 :
3495 :			Tested the jump chain elimination on all architectures (except the
3496 :			hppa). This is on by default right now and is profitable for the
3497 :			alpha and x86, however, it may not be profitable for the sparc and ppc
3498 :			when compiling the compiler.
3499 :
3500 :	blume	2155	The gc test will typically jump to a label at the end of the cluster,
3501 :			where there is another jump to an external cluster containing the actual
3502 :	george	1133	code to invoke gc. This is to allow factoring of common gc invocation
3503 :			sequences. That is to say, we generate:
3504 :
3505 :			f:
3506 :			testgc
3507 :			ja L1 % jump if above to L1
3508 :
3509 :			L1:
3510 :			jmp L2
3511 :
3512 :
3513 :			After jump chain elimination the 'ja L1' instructions is converted to
3514 :			'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end
3515 :			up being implemented in their long form (if L2 is far away) using:
3516 :
3517 :			jbe L3 % jump if below or equal to L3
3518 :			jmp L2
3519 :			L3:
3520 :			...
3521 :
3522 :
3523 :			For large compilation units L2 may be far away.
3524 :
3525 :
3526 :			----------------------------------------------------------------------
3527 :	blume	1132	Name: Matthias Blume
3528 :			Date: 2002/03/11 13:30:00 EST
3529 :			Tag: blume-20020311-mltreeeval
3530 :			Description:
3531 :
3532 :			A functor parameter was missing.
3533 :
3534 :			----------------------------------------------------------------------
3535 :	leunga	1130	Name: Allen Leung
3536 :	leunga	1131	Date: 2002/03/11 10:30:00 EST
3537 :	leunga	1142	Tag: leunga-20020311-runtime-string0
3538 :	leunga	1131	Description:
3539 :
3540 :	blume	2155	The representation of the empty string now points to a
3541 :			legal null terminated C string instead of unit. It is now possible
3542 :			to convert an ML string into C string with InlineT.CharVector.getData.
3543 :	leunga	1131	This compiles into one single machine instruction.
3544 :
3545 :			----------------------------------------------------------------------
3546 :			Name: Allen Leung
3547 :	leunga	1130	Date: 2002/03/10 23:55:00 EST
3548 :			Tag: leunga-20020310-x86-call
3549 :			Description:
3550 :
3551 :			Added machine generation for CALL instruction (relative displacement mode)
3552 :
3553 :			----------------------------------------------------------------------
3554 :	blume	1128	Name: Matthias Blume
3555 :			Date: 2002/03/08 16:05:00
3556 :			Tag: blume-20020308-entrypoints
3557 :			Description:
3558 :
3559 :			Version number bumped to 110.39.1. NEW BOOTFILES!
3560 :
3561 :			Entrypoints: non-zero offset into a code object where execution should begin.
3562 :
3563 :			- Added the notion of an entrypoint to CodeObj.
3564 :			- Added reading/writing of entrypoint info to Binfile.
3565 :			- Made runtime system bootloader aware of entrypoints.
3566 :			- Use the address of the label of the first function given to mlriscGen
3567 :			as the entrypoint. This address is currently always 0, but it will
3568 :			not be 0 once we turn on block placement.
3569 :			- Removed the linkage cluster code (which was The Other Way(tm) of dealing
3570 :			with entry points) from mlriscGen.
3571 :
3572 :			----------------------------------------------------------------------
3573 :	leunga	1127	Name: Allen Leung
3574 :			Date: 2002/03/07 20:45:00 EST
3575 :			Tag: leunga-20020307-x86-cmov
3576 :			Description:
3577 :
3578 :			Bug fixes for CMOVcc on x86.
3579 :
3580 :			1. Added machine code generation for CMOVcc
3581 :			2. CMOVcc is now generated in preference over SETcc on PentiumPro or above.
3582 :			3. CMOVcc cannot have an immediate operand as argument.
3583 :
3584 :			----------------------------------------------------------------------
3585 :	blume	1126	Name: Matthias Blume
3586 :			Date: 2002/03/07 16:15:00 EST
3587 :			Tag: blume-20020307-controls
3588 :			Description:
3589 :
3590 :			This is a very large but mostly boring patch which makes (almost)
3591 :			every tuneable compiler knob (i.e., pretty much everything under
3592 :			Control.* plus a few other things) configurable via both the command
3593 :			line and environment variables in the style CM did its configuration
3594 :			until now.
3595 :
3596 :			Try starting sml with '-h' (or, if you are brave, '-H')
3597 :
3598 :			To this end, I added a structure Controls : CONTROLS to smlnj-lib.cm which
3599 :			implements the underlying generic mechanism.
3600 :
3601 :			The interface to some of the existing such facilities has changed somewhat.
3602 :			For example, the MLRiscControl module now provides mkFoo instead of getFoo.
3603 :			(The getFoo interface is still there for backward-compatibility, but its
3604 :			use is deprecated.)
3605 :
3606 :			The ml-build script passes -Cxxx=yyy command-line arguments through so
3607 :			that one can now twiddle the compiler settings when using this "batch"
3608 :			compiler.
3609 :
3610 :			TODO items:
3611 :
3612 :			We should go through and throw out all controls that are no longer
3613 :			connected to anything. Moreover, we should go through and provide
3614 :			meaningful (and correct!) documentation strings for those controls
3615 :			that still are connected.
3616 :
3617 :			Currently, multiple calls to Controls.new are accepted (only the first
3618 :			has any effect). Eventually we should make sure that every control
3619 :			is being made (via Controls.new) exactly once. Future access can then
3620 :			be done using Controls.acc.
3621 :
3622 :			Finally, it would probably be a good idea to use the getter-setter
3623 :			interface to controls rather than ref cells. For the time being, both
3624 :			styles are provided by the Controls module, but getter-setter pairs are
3625 :			better if thread-safety is of any concern because they can be wrapped.
3626 :
3627 :			*****************************************
3628 :
3629 :			One bug fix: The function blockPlacement in three of the MLRISC
3630 :			backpatch files used to be hard-wired to one of two possibilities at
3631 :			link time (according to the value of the placementFlag). But (I
3632 :			think) it should rather sense the flag every time.
3633 :
3634 :			*****************************************
3635 :
3636 :			Other assorted changes (by other people who did not supply a HISTORY entry):
3637 :
3638 :			1. the cross-module inliner now works much better (Monnier)
3639 :			2. representation of weights, frequencies, and probabilities in MLRISC
3640 :			changed in preparation of using those for weighted block placement
3641 :			(Reppy, George)
3642 :
3643 :			----------------------------------------------------------------------
3644 :	george	1116	Name: Lal George
3645 :	george	1124	Date: 2002/03/07 14:44:24 EST 2002
3646 :			Tag: george-20020307-weighted-block-placement
3647 :
3648 :			Tested the weighted block placement optimization on all architectures
3649 :			(except the hppa) using AMPL to generate the block and edge frequencies.
3650 :			Changes were required in the machine properties to correctly
3651 :	blume	2155	categorize trap instructions. There is an MLRISC flag
3652 :			"weighted-block-placement" that can be used to enable weighted block
3653 :	george	1124	placement, but this will be ineffective without block/edge
3654 :			frequencies (coming soon).
3655 :
3656 :
3657 :			----------------------------------------------------------------------
3658 :			Name: Lal George
3659 :	blume	2155	Date: 2002/03/05 17:24:48 EST
3660 :	george	1116	Tag: george-20020305-linkage-cluster
3661 :
3662 :	george	1124	In order to support the block placement optimization, a new cluster
3663 :			is generated as the very first cluster (called the linkage cluster).
3664 :	blume	2155	It contains a single jump to the 'real' entry point for the compilation
3665 :	george	1124	unit. Block placement has no effect on the linkage cluster itself, but
3666 :			all the other clusters have full freedom in the manner in which they
3667 :	blume	2155	reorder blocks or functions.
3668 :	george	1116
3669 :			On the x86 the typical linkage code that is generated is:
3670 :			----------------------
3671 :			.align 2
3672 :			L0:
3673 :			addl $L1-L0, 72(%esp)
3674 :	george	1124	jmp L1
3675 :	george	1116
3676 :
3677 :			.align 2
3678 :			L1:
3679 :			----------------------
3680 :
3681 :	blume	2155	72(%esp) is the memory location for the stdlink register. This
3682 :	george	1116	must contain the address of the CPS function being called. In the
3683 :	george	1124	above example, it contains the address of L0; before
3684 :	george	1116	calling L1 (the real entry point for the compilation unit), it
3685 :			must contain the address for L1, and hence
3686 :
3687 :			addl $L1-L0, 72(%esp)
3688 :
3689 :	george	1124	I have tested this on all architectures except the hppa.The increase
3690 :			in code size is of course negligible
3691 :	george	1116
3692 :			----------------------------------------------------------------------
3693 :	leunga	1115	Name: Allen Leung
3694 :			Date: 2002/03/03 13:20:00 EST
3695 :			Tag: leunga-20020303-mlrisc-tools
3696 :
3697 :			Added #[ ... ] expressions to mlrisc tools
3698 :
3699 :			----------------------------------------------------------------------
3700 :	blume	1096	Name: Matthias Blume
3701 :	blume	1098	Date: 2002/02/27 12:29:00 EST
3702 :			Tag: blume-20020227-cdebug
3703 :			Description:
3704 :
3705 :			- made types in structure C and C_Debug to be equal
3706 :			- got rid of code duplication (c-int.sml vs. c-int-debug.sml)
3707 :			- there no longer is a C_Int_Debug (C_Debug is directly derived from C)
3708 :
3709 :			----------------------------------------------------------------------
3710 :			Name: Matthias Blume
3711 :	blume	1096	Date: 2002/02/26 12:00:00 EST
3712 :			Tag: blume-20020226-ffi
3713 :			Description:
3714 :
3715 :			1. Fixed a minor bug in CM's "noweb" tool:
3716 :			If numbering is turned off, then truly don't number (i.e., do not
3717 :			supply the -L option to noweb). The previous behavior was to supply
3718 :			-L'' -- which caused noweb to use the "default" line numbering scheme.
3719 :			Thanks to Chris Richards for pointing this out (and supplying the fix).
3720 :
3721 :			2. Once again, I reworked some aspects of the FFI:
3722 :
3723 :			A. The incomplete/complete type business:
3724 :
3725 :			- Signatures POINTER_TO_INCOMPLETE_TYPE and accompanying functors are
3726 :			gone!
3727 :			- ML types representing an incomplete type are now *equal* to
3728 :			ML types representing their corresponding complete types (just like
3729 :			in C). This is still safe because ml-nlffigen will not generate
3730 :			RTTI for incomplete types, nor will it generate functions that
3731 :			require access to such RTTI. But when ML code generated from both
3732 :			incomplete and complete versions of the C type meet, the ML types
3733 :			are trivially interoperable.
3734 :
3735 :			NOTE: These changes restore the full generality of the translation
3736 :			(which was previously lost when I eliminated functorization)!
3737 :
3738 :			B. Enum types:
3739 :
3740 :			- Structure C now has a type constructor "enum" that is similar to
3741 :			how the "su" constructor works. However, "enum" is not a phantom
3742 :			type because each "T enum" has values (and is isomorphic to
3743 :			MLRep.Signed.int).
3744 :			- There are generic access operations for enum objects (using
3745 :			MLRep.Signed.int).
3746 :			- ml-nlffigen will generate a structure E_foo for each "enum foo".
3747 :			* The structure contains the definition of type "mlrep" (the ML-side
3748 :			representation type of the enum). Normally, mlrep is the same
3749 :			as "MLRep.Signed.int", but if ml-nlffigen was invoked with "-ec",
3750 :			then mlrep will be defined as a datatype -- thus facilitating
3751 :			pattern matching on mlrep values.
3752 :			("-ec" will be suppressed if there are duplicate values in an
3753 :			enumeration.)
3754 :			* Constructors ("-ec") or values (no "-ec") e_xxx of type mlrep
3755 :			will be generated for each C enum constant xxx.
3756 :			* Conversion functions m2i and i2m convert between mlrep and
3757 :			MLRep.Signed.int. (Without "-ec", these functions are identities.)
3758 :			* Coversion functions c and ml convert between mlrep and "tag enum".
3759 :			* Access functions (get/set) fetch and store mlrep values.
3760 :			- By default (unless ml-nlffigen was invoked with "-nocollect"), unnamed
3761 :			enumerations are merged into one single enumeration represented by
3762 :			structure E_'.
3763 :
3764 :			----------------------------------------------------------------------
3765 :	leunga	1080	Name: Allen Leung
3766 :	leunga	1094	Date: 2002/02/25 04:45:00 EST
3767 :			Tag: leunga-20020225-cps-spill
3768 :
3769 :			This is a new implementation of the CPS spill phase.
3770 :			The new phase is in the new file compiler/CodeGen/cpscompile/spill-new.sml
3771 :			In case of problems, replace it with the old file spill.sml
3772 :
3773 :	blume	2155	The current compiler runs into some serious performance problems when
3774 :	leunga	1094	constructing a large record. This can happen when we try to compile a
3775 :			structure with many items. Even a very simple structure like the following
3776 :			makes the compiler slow down.
3777 :
3778 :			structure Foo = struct
3779 :			val x_1 = 0w1 : Word32.int
3780 :			val x_2 = 0w2 : Word32.int
3781 :			val x_3 = 0w3 : Word32.int
3782 :			...
3783 :			val x_N = 0wN : Word32.int
3784 :			end
3785 :
3786 :	blume	2155	The following table shows the compile time, from N=1000 to N=4000,
3787 :	leunga	1094	with the old compiler:
3788 :
3789 :			N
3790 :	blume	2155	1000 CPS 100 spill 0.04u 0.00s 0.00g
3791 :			MLRISC ra 0.06u 0.00s 0.05g
3792 :	leunga	1094	(spills = 0 reloads = 0)
3793 :	blume	2155	TOTAL 0.63u 0.07s 0.21g
3794 :	leunga	1094
3795 :	blume	2155	1100 CPS 100 spill 8.25u 0.32s 0.64g
3796 :			MLRISC ra 5.68u 0.59s 3.93g
3797 :	leunga	1094	(spills = 0 reloads = 0)
3798 :	blume	2155	TOTAL 14.71u 0.99s 4.81g
3799 :	leunga	1094
3800 :	blume	2155	1500 CPS 100 spill 58.55u 2.34s 1.74g
3801 :			MLRISC ra 5.54u 0.65s 3.91g
3802 :	leunga	1094	(spills = 543 reloads = 1082)
3803 :	blume	2155	TOTAL 65.40u 3.13s 6.00g
3804 :	leunga	1094
3805 :	blume	2155	2000 CPS 100 spill 126.69u 4.84s 3.08g
3806 :			MLRISC ra 0.80u 0.10s 0.55g
3807 :	leunga	1094	(spills = 42 reloads = 84)
3808 :	blume	2155	TOTAL 129.42u 5.10s 4.13g
3809 :	leunga	1094
3810 :	blume	2155	3000 CPS 100 spill 675.59u 19.03s 11.64g
3811 :			MLRISC ra 2.69u 0.27s 1.38g
3812 :	leunga	1094	(spills = 62 reloads = 124)
3813 :	blume	2155	TOTAL 682.48u 19.61s 13.99g
3814 :	leunga	1094
3815 :	blume	2155	4000 CPS 100 spill 2362.82u 56.28s 43.60g
3816 :			MLRISC ra 4.96u 0.27s 2.72g
3817 :	leunga	1094	(spills = 85 reloads = 170)
3818 :	blume	2155	TOTAL 2375.26u 57.21s 48.00g
3819 :	leunga	1094
3820 :	blume	2155	As you can see the old cps spill module suffers from some serious
3821 :			performance problem. But since I cannot decipher the old code fully,
3822 :			instead of patching the problems up, I'm reimplementing it
3823 :			with a different algorithm. The new code is more modular,
3824 :			smaller when compiled, and substantially faster
3825 :			(O(n log n) time and O(n) space). Timing of the new spill module:
3826 :	leunga	1094
3827 :	blume	2155	4000 CPS 100 spill 0.02u 0.00s 0.00g
3828 :			MLRISC ra 0.25u 0.02s 0.15g
3829 :			(spills=1 reloads=3)
3830 :			TOTAL 7.74u 0.34s 1.62g
3831 :	leunga	1094
3832 :			Implementation details:
3833 :
3834 :	blume	2155	As far as I can tell, the purpose of the CPS spill module is to make sure the
3835 :			number of live variables at any program point (the bandwidth)
3836 :			does not exceed a certain limit, which is determined by the
3837 :			size of the spill area.
3838 :	leunga	1094
3839 :	blume	2155	When the bandwidth is too large, we decrease the register pressure by
3840 :	leunga	1094	packing live variables into spill records. How we achieve this is
3841 :			completely different than what we did in the old code.
3842 :
3843 :	blume	2155	First, there is something about the MLRiscGen code generator
3844 :	leunga	1094	that we should be aware of:
3845 :
3846 :			o MLRiscGen performs code motion!
3847 :	blume	2155
3848 :	leunga	1094	In particular, it will move floating point computations and
3849 :	blume	2155	address computations involving only the heap pointer to
3850 :			their use sites (if there is only a single use).
3851 :	leunga	1094	What this means is that if we have a CPS record construction
3852 :			statement
3853 :	blume	2155
3854 :	leunga	1094	RECORD(k,vl,w,e)
3855 :	blume	2155
3856 :			we should never count the new record address w as live if w
3857 :	leunga	1094	has only one use (which is often the case).
3858 :	blume	2155
3859 :	leunga	1094	We should do something similar to floating point, but the transformation
3860 :			there is much more complex, so I won't deal with that.
3861 :
3862 :			Secondly, there are now two new cps primops at our disposal:
3863 :
3864 :	blume	2155	1. rawrecord of record_kind option
3865 :	leunga	1094	This pure operator allocates some uninitialized storage from the heap.
3866 :			There are two forms:
3867 :	blume	2155
3868 :	leunga	1094	rawrecord NONE [INT n] allocates a tagless record of length n
3869 :			rawrecord (SOME rk) [INT n] allocates a tagged record of length n
3870 :			and initializes the tag.
3871 :	blume	2155
3872 :	leunga	1094	2. rawupdate of cty
3873 :	blume	2155	rawupdate cty (v,i,x)
3874 :	leunga	1094	Assigns to x to the ith component of record v.
3875 :			The storelist is not updated.
3876 :	blume	2155
3877 :	leunga	1094	We use these new primops for both spilling and increment record construction.
3878 :	blume	2155
3879 :	leunga	1094	1. Spilling.
3880 :	blume	2155
3881 :	leunga	1094	This is implemented with a linear scan algorithm (but generalized
3882 :			to trees). The algorithm will create a single spill record at the
3883 :			beginning of the cps function and use rawupdate to spill to it,
3884 :			and SELECT or SELp to reload from it. So both spills and reloads
3885 :	blume	2155	are fine-grain operations. In contrast, in the old algorithm
3886 :			"spills" have to be bundled together in records.
3887 :
3888 :	leunga	1094	Ideally, we should sink the spill record construction to where
3889 :			it is needed. We can even split the spill record into multiple ones
3890 :			at the places where they are needed. But CPS is not a good
3891 :			representation for global code motion, so I'll keep it simple and
3892 :			am not attempting this.
3893 :	blume	2155
3894 :	leunga	1094	2. Incremental record construction (aka record splitting).
3895 :
3896 :			Long records with many component values which are simulatenously live
3897 :	blume	2155	(recall that single use record addresses are not considered to
3898 :	leunga	1094	be live) are constructed with rawrecord and rawupdate.
3899 :			We allocate space on the heap with rawrecord first, then gradually
3900 :			fill it in with rawupdate. This is the technique suggested to me
3901 :			by Matthias.
3902 :	blume	2155
3903 :	leunga	1094	Some restrictions on when this is applicable:
3904 :			1. It is not a VECTOR record. The code generator currently does not handle
3905 :			this case. VECTOR record uses double indirection like arrays.
3906 :	blume	2155	2. All the record component values are defined in the same "basic block"
3907 :			as the record constructor. This is to prevent speculative
3908 :			record construction.
3909 :	leunga	1094
3910 :			----------------------------------------------------------------------
3911 :			Name: Allen Leung
3912 :	leunga	1086	Date: 2002/02/22 01:02:00 EST
3913 :			Tag: leunga-20020222-mlrisc-tools
3914 :
3915 :			Minor bug fixes in the parser and rewriter
3916 :
3917 :			----------------------------------------------------------------------
3918 :			Name: Allen Leung
3919 :	leunga	1085	Date: 2002/02/21 20:20:00 EST
3920 :			Tag: leunga-20020221-peephole
3921 :
3922 :			Regenerated the peephole files. Some contained typos in the specification
3923 :			and some didn't compile because of pretty printing bugs in the old version
3924 :			of 'nowhere'.
3925 :
3926 :			----------------------------------------------------------------------
3927 :			Name: Allen Leung
3928 :	leunga	1079	Date: 2002/02/19 20:20:00 EST
3929 :			Tag: leunga-20020219-mlrisc-tools
3930 :			Description:
3931 :
3932 :			Minor bug fixes to the mlrisc-tools library:
3933 :
3934 :			1. Fixed up parsing colon suffixed keywords
3935 :			2. Added the ability to shut the error messages up
3936 :			3. Reimplemented the pretty printer and fixed up/improved
3937 :			the pretty printing of handle and -> types.
3938 :			4. Fixed up generation of literal symbols in the nowhere tool.
3939 :			5. Added some SML keywords to to sml.sty
3940 :
3941 :			----------------------------------------------------------------------
3942 :			Name: Matthias Blume
3943 :	blume	1078	Date: 2002/02/19 16:20:00 EST
3944 :			Tag: blume-20020219-cmffi
3945 :			Description:
3946 :
3947 :			A wild mix of changes, some minor, some major:
3948 :
3949 :			* All C FFI-related libraries are now anchored under $c:
3950 :			$/c.cm --> $c/c.cm
3951 :			$/c-int.cm --> $c/internals/c-int.cm
3952 :			$/memory.cm --> $c/memory/memory.cm
3953 :
3954 :			* "make" tool (in CM) now treats its argument pathname slightly
3955 :			differently:
3956 :			1. If the native expansion is an absolute name, then before invoking
3957 :			the "make" command on it, CM will apply OS.Path.mkRelative
3958 :			(with relativeTo = OS.FileSys.getDir()) to it.
3959 :			2. The argument will be passed through to subsequent phases of CM
3960 :			processing without "going native". In particular, if the argument
3961 :			was an anchored path, then "make" will not lose track of that anchor.
3962 :
3963 :			* Compiler backends now "know" their respective C calling conventions
3964 :			instead of having to be told about it by ml-nlffigen. This relieves
3965 :			ml-nlffigen from one of its burdens.
3966 :
3967 :			* The X86Backend has been split into X86CCallBackend and X86StdCallBackend.
3968 :
3969 :			* Export C_DEBUG and C_Debug from $c/c.cm.
3970 :
3971 :			* C type encoding in ml-nlffi-lib has been improved to model the conceptual
3972 :			subtyping relationship between incomplete pointers and their complete
3973 :			counterparts. For this, ('t, 'c) ptr has been changed to 'o ptr --
3974 :			with the convention of instantiating 'o with ('t, 'c) obj whenever
3975 :			the pointer target type is complete. In the incomplete case, 'o
3976 :			will be instantiated with some "'c iobj" -- a type obtained by
3977 :			using one of the functors PointerToIncompleteType or PointerToCompleteType.
3978 :
3979 :			Operations that work on both incomplete and complete pointer types are
3980 :			typed as taking an 'o ptr while operations that require the target to
3981 :			be known are typed as taking some ('t, 'c) obj ptr.
3982 :
3983 :			voidptr is now a bit "more concrete", namely "type voidptr = void ptr'"
3984 :			where void is an eqtype without any values. This makes it possible
3985 :			to work on voidptr values using functions meant to operate on light
3986 :			incomplete pointers.
3987 :
3988 :			* As a result of the above, signature POINTER_TO_INCOMPLETE_TYPE has
3989 :			been vastly simplified.
3990 :
3991 :			----------------------------------------------------------------------
3992 :			Name: Matthias Blume
3993 :	blume	1076	Date: 2002/02/19 10:48:00 EST
3994 :			Tag: blume-20020219-pqfix
3995 :			Description:
3996 :
3997 :			Applied Chris Okasaki's bug fix for priority queues.
3998 :
3999 :			----------------------------------------------------------------------
4000 :			Name: Matthias Blume
4001 :	blume	1073	Date: 2002/02/15 17:05:00
4002 :	blume	1069	Tag: Release_110_39
4003 :			Description:
4004 :
4005 :	blume	1073	Last-minute retagging is becoming a tradition... :-(
4006 :
4007 :			This is the working release 110.39.
4008 :
4009 :			----------------------------------------------------------------------
4010 :			Name: Matthias Blume
4011 :			Date: 2002/02/15 16:00:00 EST
4012 :			Tag: Release_110_39-orig
4013 :			Description:
4014 :
4015 :	blume	1069	Working release 110.39. New bootfiles.
4016 :
4017 :	blume	1073	(Update: There was a small bug in the installer so it wouldn't work
4018 :			with all shells. So I retagged. -Matthias)
4019 :
4020 :	blume	1069	----------------------------------------------------------------------
4021 :			Name: Matthias Blume
4022 :	blume	1068	Date: 2002/02/15 14:17:00 EST
4023 :			Tag: blume-20020215-showbindings
4024 :			Description:
4025 :
4026 :			Added EnvRef.listBoundSymbols and CM.State.showBindings. Especially
4027 :			the latter can be useful for exploring what bindings are available at
4028 :			the interactive prompt. (The first function returns only the list
4029 :			of symbols that are really bound, the second prints those but also the
4030 :			ones that CM's autoloading mechanism knows about.)
4031 :
4032 :			----------------------------------------------------------------------
4033 :			Name: Matthias Blume
4034 :	blume	1067	Date: 2002/02/15 12:08:00 EST
4035 :			Tag: blume-20020215-iptrs
4036 :			Description:
4037 :
4038 :			Two improvements to ml-nlffigen:
4039 :
4040 :			1. Write files only if they do not exist or if their current contents
4041 :			do not coincide with what's being written. (That is, avoid messing
4042 :			with the time stamps unless absolutely necessary.)
4043 :
4044 :			2. Implement a "repository" mechanism for generated files related
4045 :			to "incomplete pointer types". See the README file for details.
4046 :
4047 :			----------------------------------------------------------------------
4048 :			Name: Matthias Blume
4049 :	blume	1066	Date: 2002/02/14 11:50:00 EST
4050 :			Tag: blume-20020214-quote
4051 :			Description:
4052 :
4053 :			Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm). This is required
4054 :			because of the new and improved tag generation scheme. (Thanks to Allen
4055 :			Leung for pointing it out.)
4056 :
4057 :			----------------------------------------------------------------------
4058 :	george	1065	Name: Lal George
4059 :			Date: 2002/02/14 09:55:27 EST 2002
4060 :			Tag: george-20020214-isabelle-bug
4061 :	blume	2155	Description:
4062 :	george	1065
4063 :			Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
4064 :			of Isabelle on the x86.
4065 :
4066 :			From Allen:
4067 :			-----------
4068 :	blume	2155	I've found the problem:
4069 :	george	1065
4070 :			in ra-core.sml, I use the counter "blocked" to keep track of the
4071 :			true number of elements in the freeze queue. When the counter goes
4072 :			to zero, I skip examining the queue. But I've messed up the
4073 :			bookkeeping in combine():
4074 :
4075 :			else ();
4076 :			case !ucol of
4077 :	blume	2155	PSEUDO => (if !cntv > 0 then
4078 :			(if !cntu > 0 then blocked := !blocked - 1 else ();
4079 :	george	1065	^^^^^^^^^^^^^^^^^^^^^^^
4080 :			moveu := mergeMoveList(!movev, !moveu)
4081 :			)
4082 :	blume	2155	else ();
4083 :
4084 :	george	1065	combine() is called to coalesce two nodes u and v.
4085 :			I think I was thinking that if the move counts of u and v are both
4086 :			greater than zero then after they are coalesced then one node is
4087 :			removed from the freeze queue. Apparently I was thinking that
4088 :			both u and v are of low degree, but that's clearly not necessarily true.
4089 :
4090 :	blume	2155
4091 :	george	1065	02/12/2002:
4092 :			Here's the patch. HOL now compiles.
4093 :
4094 :			I don't know how this impact on performance (compile
4095 :	blume	2155	time or runtime). This bug caused the RA (especially on the x86)
4096 :	george	1065	to go thru the potential spill phase when there are still nodes on the
4097 :			freeze queue.
4098 :
4099 :
4100 :
4101 :
4102 :			----------------------------------------------------------------------
4103 :	blume	1058	Name: Matthias Blume
4104 :	blume	1064	Date: 2002/02/13 22:40:00 EST
4105 :			Tag: blume-20020213-fptr-rtti
4106 :			Description:
4107 :
4108 :			Fixed a bug in ml-nlffigen that was introduced with one of the previous
4109 :			updates.
4110 :
4111 :			----------------------------------------------------------------------
4112 :			Name: Matthias Blume
4113 :	blume	1063	Date: 2002/02/13 16:41:00 EST
4114 :			Tag: blume-20020213-cmlpq
4115 :			Description:
4116 :
4117 :			Added new priority queue export symbols (which have just been added to
4118 :			smlnj-lib.cm) to CML's version of smlnj-lib.cm. (Otherwise CML would
4119 :			not compile and the installer would choke.)
4120 :
4121 :			----------------------------------------------------------------------
4122 :			Name: Matthias Blume
4123 :	blume	1062	Date: 2002/02/13 16:15:00 EST
4124 :			Tag: blume-20020213-various
4125 :			Description:
4126 :
4127 :			1. More tweaks to ml-nlffigen:
4128 :
4129 :			- better internal datastructures (resulting in slight speedup)
4130 :			- "-match" option requires exact match
4131 :			- "localized" gensym counters (untagged structs/unions nested within
4132 :			other structs/unions or within typedefs get a fresh counter; their
4133 :			tag will be prefixed by a concatenation of their parents' tags)
4134 :			- bug fixes (related to calculation of transitive closure of types
4135 :			to be included in the output)
4136 :
4137 :			2. Minor Basis updates:
4138 :
4139 :			- added implementations for List.collate and Option.app
4140 :
4141 :			----------------------------------------------------------------------
4142 :			Name: Matthias Blume
4143 :	blume	1060	Date: 2002/02/11 15:55:00 EST
4144 :			Tag: blume-20020211-gensym
4145 :			Description:
4146 :
4147 :			Added a "-gensym" option to command line of ml-nlffigen. This can be
4148 :			used to specify a "stem" -- a string that is inserted in all "gensym'd"
4149 :			names (ML structure names that correspond to unnamed C structs, unions,
4150 :			and enums), so that separate runs of ml-nlffigen do not clash.
4151 :
4152 :			----------------------------------------------------------------------
4153 :			Name: Matthias Blume
4154 :	blume	1059	Date: 2002/02/11 12:05:00 EST
4155 :			Tag: blume-20020211-gensml
4156 :			Description:
4157 :
4158 :			A quick fix for a problem with GenSML (in the pgraph-util library):
4159 :			Make generation of toplevel "local" optional. (Strictly speaking,
4160 :			signature definitions within "local" are not legal SML.)
4161 :
4162 :			Other than that: updates to INSTALL and cm/TODO.
4163 :
4164 :			----------------------------------------------------------------------
4165 :			Name: Matthias Blume
4166 :	blume	1058	Date: 2002/02/08 15:00:00 EST
4167 :			Tag: blume-20020208-uniquepid
4168 :			Description:
4169 :
4170 :			0. Version number has been bumped to 110.38.1. NEW BOOTFILES!!!
4171 :
4172 :			1. The installer (config/install.sh) has gotten smarter:
4173 :
4174 :			- Configuration options are a bit easier to specify now
4175 :			(in config/targets).
4176 :			- Bug in recognizing .tar.bz2 files fixed.
4177 :			- Installer automatically resolves dependencies between
4178 :			configuration options (e.g., if you ask for eXene, you will
4179 :			also get cml -- regardless whether you asked for it or not).
4180 :			- Installer can run in "quieter mode" by setting the environment
4181 :			variable INSTALL_QUIETLY to "true". "Quieter" does not mean
4182 :			"completely silent", though.
4183 :			- Build HashCons library as part of smlnj-lib.
4184 :
4185 :			2. A new scheme for assigning persistent identifiers to compilation
4186 :			units (and, by extension, to types etc.) has been put into place.
4187 :			This fixes a long-standing bug where types and even dynamic values
4188 :			can get internally confused, thereby compromising type safety
4189 :			(abstraction) and dynamic correctness. See
4190 :