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[smlnj] Annotation of /sml/trunk/HISTORY
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Annotation of /sml/trunk/HISTORY

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Revision 1783 - (view) (download)

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 1615 Name:
11 : mblume 1480 Date: yyyy/mm/dd
12 :     Tag: <post-commit CVS tag>
13 :     Description:
14 :    
15 :     ----------------------------------------------------------------------
16 : mblume 1741 Name: Matthias Blume (blume (at) tti - c (dot) org)
17 : mblume 1783 Date: 2005/05/04 10:35:00 CDT
18 :     Tag: blume-20050504-join
19 :     Description:
20 :    
21 :     Added a "join" combinator to the ParserComb module in smlnj-lib.cm.
22 :    
23 :     ----------------------------------------------------------------------
24 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
25 : mblume 1770 Date: 2005/02/28 23:40:00 CST
26 :     Tag: blume-20050228-mVar
27 :     Description:
28 :    
29 :     Fixed serious bug (brown paper bag variety) in new implementation of
30 :     structure Atom in CML. (I had accidentally used a mailbox instead of
31 :     an mvar, leaving the door open for races.)
32 :    
33 :     ----------------------------------------------------------------------
34 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
35 : mblume 1761 Date: 2005/02/25 15:00:00 CST
36 :     Tag: Release_110_53
37 :     Description:
38 :    
39 :     New working version (110.53). NEW BOOTFILES!
40 :    
41 :     ----------------------------------------------------------------------
42 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
43 : mblume 1760 Date: 2005/02/25 14:50:00 CST
44 :     Tag: blume-20050225-susp
45 :     Description:
46 :    
47 :     Brought back SMLofNJ.Susp. The underlying suspension type is the one
48 :     implemented in Core -- which means that it is the same as the one used
49 :     by the lazy extension.
50 :    
51 :     ----------------------------------------------------------------------
52 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
53 : mblume 1759 Date: 2005/02/24 16:50:00 CST
54 :     Tag: blume-20050224-cml-atom
55 :     Description:
56 :    
57 :     Simpler and at the same time more general implementation of structure
58 :     Atom in CML.
59 :    
60 :     ----------------------------------------------------------------------
61 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
62 : mblume 1758 Date: 2005/02/15 17:35:00 CST
63 :     Tag: blume-20050215-tools
64 :     Description:
65 :    
66 :     Created new "tools" directory under "src" and moved "TraceDebugProf"
67 :     there.
68 :    
69 :     ----------------------------------------------------------------------
70 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
71 : mblume 1755 Date: 2005/02/10 17:55:00 CST
72 :     Tag: blume-20050210-longlong
73 :     Description:
74 :    
75 :     Implemented "long long" arguments and results for NLFFI. (Only the
76 :     PPC/MacOS implementation is complete, the other backends still need to
77 :     be updated.)
78 :    
79 :     ----------------------------------------------------------------------
80 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
81 : mblume 1751 Date: 2005/01/24 17:40:00 CST
82 :     Tag: blume-20050124-mlyacc
83 :     Description:
84 :    
85 :     Minor cleanup in ML-Yacc rule printing mechanism. This should fix a
86 :     problem with certain "as" patterns which previously got rendered
87 :     using incorrect syntax.
88 :    
89 :     ----------------------------------------------------------------------
90 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
91 : mblume 1750 Date: 2005/01/18 12:00:00 CST
92 :     Tag: blume-20050118-profile
93 :     Description:
94 :    
95 :     Made time profiling code (interrupt handler) in runtime system aware
96 :     of new array representation.
97 :    
98 :     ----------------------------------------------------------------------
99 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
100 : mblume 1747 Date: 2005/01/14 18:00:00 CST
101 :     Tag: blume-20050114-heap2exec
102 :     Description:
103 :    
104 :     Implemented new (but still experimental) heap2exec facility. This is
105 :     tested under Mac OS X and should work under Linux (will test shortly).
106 :     It will probably also work on the Sparc (will test some time later).
107 :    
108 :     - removed old "HACKED_STANDALONE" hack from runtime
109 :    
110 :     To be able to test this, uncomment the request for "heap2asm" in
111 :     config/targets prior to installation. (Notice that this is different
112 :     from "heap2exec" mentioned below. Not a typo.)
113 :    
114 :     To perform an actual test, run the command
115 :    
116 :     $ bin/heap2exec heapfile execfile
117 :    
118 :     (You can put heap2exec on your shell's path.)
119 :    
120 :     For example, run
121 :    
122 :     $ bin/heap2exec bin/.heap/ml-yacc.ppc-darwin mly
123 :    
124 :     This will create a standalone executable called "mly" which you can
125 :     then invoke directly as a command.
126 :    
127 :     ----------------------------------------------------------------------
128 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
129 : mblume 1746 Date: 2005/01/07 11:44:00 CST
130 :     Tag: blume-20050107-mlstring
131 :     Description:
132 :    
133 :     fixed off-by-one error in ML_STRING macro (globals.c)
134 :    
135 :     ----------------------------------------------------------------------
136 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
137 : mblume 1744 Date: 2004/12/23 18:00:00 CST
138 :     Tag: blume-20041223-santa
139 :     Description:
140 :    
141 :     Made ml-build script "smarter" (but only very little).
142 :    
143 :     ----------------------------------------------------------------------
144 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
145 : mblume 1742 Date: 2004/12/21 15:05:00 CST
146 :     Tag: blume-20041221-longlong
147 :     Description:
148 :    
149 :     * Implemented access to signed and unsigned long long data in NLFFI.
150 :     (The parameter-passing part of the picture has not complete. But
151 :     data structure access seems to work.)
152 :    
153 :     * Fixed CM's incorrect assumption that the PPC is little-endian.
154 :     (On the Mac, it is big-endian. And that's currently our only
155 :     PPC platform.)
156 :    
157 :     ----------------------------------------------------------------------
158 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
159 : mblume 1741 Date: 2004/12/21 12:50:00 CST
160 :     Tag: blume-20041221-memory
161 :     Description:
162 :    
163 :     Some cleanup in the $c/memory.cm library: separated some concerns by
164 :     moving allocation code and memory access code each into their own
165 :     files.
166 :    
167 :     ----------------------------------------------------------------------
168 : allenleung 1740 Name: Allen Leung (leunga (at) reservoir (dot) com)
169 :     Date: 2004/12/17 16:12:00 EST
170 :     Tag: leunga-20041217-cygwin-smlnj-home
171 :     Description:
172 :    
173 :     The Unix I/O library of SML/NJ on cygwin does not understand
174 :     Windows style pathname, so problems arise when SMLNJ_HOME is set
175 :     to a Windows style pathname. _run-sml now converts SMLNJ_HOME
176 :     to a POSIX pathname on cygwin.
177 :    
178 :     ----------------------------------------------------------------------
179 : mblume 1737 Name: Matthias Blume (blume (at) tti - c (dot) org)
180 : mblume 1736 Date: 2004/12/16 13:35:00 CST
181 :     Tag: Release_110_52
182 :     Description:
183 :    
184 :     Last-minute changes incorporated into 110.52. Release tag moved.
185 :    
186 :     The changes:
187 :     - HashString.hashString' -> HashString.hashSubstring
188 :     - bug fix in UnivariateStats
189 :    
190 :     ----------------------------------------------------------------------
191 : mblume 1702 Name: Matthias Blume (blume (at) tti - c (dot) org)
192 : mblume 1733 Date: 2004/12/15 23:40:00 CST
193 :     Tag: blume-20041215-hashSubstring
194 :     Description:
195 :    
196 :     - HashString.hashString' -> HashString.hashSubstring
197 :     - corresponding changes in atom.sml
198 :     - "de-compressed" (aka. un-obfuscated) code for UnivariateStats and
199 :     added some comments
200 :    
201 :     ----------------------------------------------------------------------
202 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
203 : mblume 1728 Date: 2004/12/15 15:30:00 CST
204 : mblume 1736 Tag: (Release_110_52)
205 : mblume 1728 Description:
206 :    
207 :     New working version (110.52). NEW BOOTFILES!
208 :    
209 :     ----------------------------------------------------------------------
210 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
211 : mblume 1727 Date: 2004/12/15 12:45:00 CST
212 :     Tag: blume-20041215-spaces
213 :     Description:
214 :    
215 :     More on the space problem (this time for Win32).
216 :    
217 :     ----------------------------------------------------------------------
218 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
219 : mblume 1725 Date: 2004/12/14 17:30:00 CST
220 :     Tag: blume-20041214-spaces
221 :     Description:
222 :    
223 :     Hacked some of the scripts (in particular: the installer) to cope with
224 :     spaces in filenames a bit better. But beware: the current "solution"
225 :     is likely still full of bugs and inherently incomplete. (We need to
226 :     do away with those shell scripts for a comprehensive solution.)
227 :    
228 :     ----------------------------------------------------------------------
229 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
230 : mblume 1724 Date: 2004/12/13 14:45:00 CST
231 :     Tag: blume-20041213-ml-makedepend
232 :     Description:
233 :    
234 :     Fixed bug in code for ml-makedepend.
235 :    
236 :     ----------------------------------------------------------------------
237 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
238 : mblume 1720 Date: 2004/12/09 16:30:00 CST
239 :     Tag: blume-20041209-statistics
240 :     Description:
241 :    
242 :     Added two simple but potentially useful statistics modules to SML/NJ Library.
243 :     (See CHANGES file there.)
244 :    
245 :     ----------------------------------------------------------------------
246 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
247 : mblume 1718 Date: 2004/12/01 16:50:00 CST
248 :     Tag: blume-20041201-atom
249 :     Description:
250 :    
251 :     smlnj-lib:
252 :    
253 :     Added function HashString.hashString' for substrings.
254 :     Hand-inlined CharVector.foldl into HashString (for speed).
255 :     Modified implementation of structure Atom to avoid extracting
256 :     strings from substrings unless necessary.
257 :     (Also see CHANGES file for smlnj-lib.)
258 :    
259 :     ----------------------------------------------------------------------
260 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
261 : mblume 1717 Date: 2004/11/24 22:15:00 CST
262 :     Tag: blume-20041124-cml
263 :     Description:
264 :    
265 :     Made sure CML compiles when Position = Int64.
266 :    
267 :     ----------------------------------------------------------------------
268 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
269 : mblume 1715 Date: 2004/11/24 14:30:00 CST
270 :     Tag: blume-20041124-position
271 :     Description:
272 :    
273 :     The compiler can now be compiled in a mode that makes structure Position
274 :     equal to Int64. The default, however, is unchanged (Position = Int31)
275 :     for the time being.
276 :    
277 :     To enable 64-bit positions, use the following procedure:
278 :    
279 :     1. Start sml
280 :     2. Autoload $smlnj/cmb.cm (if not already autoloaded)
281 :     3. Type
282 :     #set (CMB.symval "USE_64_BIT_POSITIONS") (SOME 1);
283 :     4. Run CMB.make() as usual.
284 :    
285 :     This is barely tested. The only test so far was a little SML program
286 :     counting the number of characters in an 8-gigabyte file by
287 :     reading it character-by-character. That test was successful.
288 :    
289 :     In support of 64-bit positions, a number of new functions have been
290 :     added to the runtime system.
291 :    
292 :     ----------------------------------------------------------------------
293 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
294 : mblume 1716 Date: 2004/11/23 14:45:00 CST
295 :     Tag: blume-20041123-useFile
296 : mblume 1712 Description:
297 :    
298 :     Fixed a problem with unhelpful error messages related to problems with
299 :     .cm- or .sml files that appear as part of the sml command line.
300 :    
301 :     ----------------------------------------------------------------------
302 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
303 : mblume 1703 Date: 2004/11/18 15:40:00 CST
304 :     Tag: Release_110_51
305 :     Description:
306 :    
307 :     New working version (110.51). NEW BOOTFILES!
308 :    
309 :     ----------------------------------------------------------------------
310 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
311 : mblume 1702 Date: 2004/11/18 15:35:00 CST
312 :     Tag: <none>
313 :     Description:
314 :    
315 :     Enabled dlopen and friends for FreeBSD (as recommended by Johannes 5
316 :     Joemann).
317 :    
318 :     ----------------------------------------------------------------------
319 : allenleung 1701 Name: Allen Leung (leunga (at) reservoir (dot) com)
320 :     Date: 2004/11/17 16:05:21 EST 2004
321 :     Tag: leunga-20041117-mlrisc-live-kill
322 :     Description:
323 :    
324 :     Added support for MLTree constructs LIVE and KILL
325 :     to all the architectures.
326 :    
327 :     ----------------------------------------------------------------------
328 : mblume 1687 Name: Matthias Blume (blume (at) tti - c (dot) org)
329 : mblume 1689 Date: 2004/11/13 00:20:00 CST
330 :     Tag: blume-20041113-versiontool
331 :     Description:
332 :    
333 :     - Stripped down the versiontool: It now only handles the version number.
334 :     The date string is generated at bootstrap time (during makeml).
335 :    
336 :     - In a previous commit, fixed a minor issue with how polyequal is being
337 :     translated. In particular, the code now "looks through" abstractions.
338 :     This results in slightly fewer polyEqual warnings and hopefully slightly
339 :     more efficient code. Important examples for where this matters are
340 :     the new int64 and word64 types.
341 :    
342 :     ----------------------------------------------------------------------
343 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
344 : mblume 1687 Date: 2004/11/12 00:30:00 CST
345 :     Tag: blume-20041112-int64
346 :     Description:
347 :    
348 :     Structure Int64 fully hooked in. (The implementation is not very
349 :     efficient, though.)
350 :    
351 :     ----------------------------------------------------------------------
352 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
353 : mblume 1686 Date: 2004/11/11 17:30:00 CST
354 :     Tag: blume-20041111-more64
355 :     Description:
356 :    
357 :     All the pieces of Word64 are now there, with the exception of the
358 :     conversions from and to LargeWord. (Eventually these need to be identities,
359 :     but for the time being they don't even make sense because LargeWord is
360 :     32-bit wide.)
361 :    
362 :     Also started to add similar support for Int64, but major pieces of that
363 :     are still missing.
364 :    
365 :     ----------------------------------------------------------------------
366 : mblume 1668 Name: Matthias Blume (blume (at) tti - c (dot) org)
367 : mblume 1684 Date: 2004/11/11 00:15:00 CST
368 :     Tag: blume-20041111-word64
369 :     Description:
370 :    
371 :     Structure Word64 is now (almost) complete, word literals and patterns
372 :     seem to work. There are a few odd pieces missing. In particular,
373 :     I didn't do the {from,to}LargeWord parts because LargeWord is still Word32
374 :     at the moment.
375 :    
376 :     Making Word64 official would mean that LargeWord becomes Word64. But
377 :     this requires extreme care because most word-word conversions have to
378 :     go through LargeWord, so making a mistake means loss of efficiency or
379 :     worse. Eventually there will be a solution similar to (but actually
380 :     simpler than) what I did with IntInf.
381 :    
382 :     ----------------------------------------------------------------------
383 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
384 : mblume 1683 Date: 2004/11/10 18:12:00 CST
385 :     Tag: blume-20041110-64bit
386 :     Description:
387 :    
388 :     More 64-bit hacking (but still not even half-way there yet).
389 :     Also, some assorted improvements to the handling of 8-bit words.
390 :    
391 :     ----------------------------------------------------------------------
392 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
393 : mblume 1682 Date: 2004/11/09 17:50:00 CST
394 : mblume 1683 Tag: <none>
395 : mblume 1682 Description:
396 :    
397 :     Started adding some infrastructure for supporting 64-bit int- and
398 :     word-types. (Still in its very early stages.)
399 :    
400 :     ----------------------------------------------------------------------
401 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
402 : mblume 1672 Date: 2004/10/28 10:45:00 CDT
403 :     Tag: Release_110_50
404 :     Description:
405 :    
406 :     New working version (110.50). NEW BOOTFILES!
407 :    
408 :     =====================
409 :    
410 :     Also:
411 :    
412 :     - Changend config/srcarchiveurl from a file just
413 :     containing the URL string into a file containing
414 :     shell script code. The code has access to the $VERSION variable.
415 :     - Made corresponding changes to config/install.sh and config/unpack.
416 :     - Default contents of config/srcarchiveurl uses $VERSION and
417 :     normally does not have to be edited to reflect a version change.
418 :    
419 :     (As a result, a version change can be done by just editing
420 :     config/version, the rest is now automatic.)
421 :    
422 :     ----------------------------------------------------------------------
423 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
424 : mblume 1669 Date: 2004/10/27 17:50:00 CDT
425 :     Tag: blume-20041027-btrace-msg
426 :     Description:
427 :    
428 :     BackTrace.monitor now also reports the source of the exception that
429 :     triggered the trace.
430 :    
431 :     ----------------------------------------------------------------------
432 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
433 : mblume 1668 Date: 2004/10/27 17:20:00 CDT
434 :     Tag: blume-20041027-x86-c-calls
435 :     Description:
436 :    
437 :     This is the HISTORY entry for two earlier commits, both concerning
438 :     the x86 c-calls code in MLRISC:
439 :    
440 :     - added a missing LOAD in the code that deals with struct arguments
441 :     - made sure the caller does not add the wrong number of bytes to the
442 :     stack pointer after a call of a function returning a struct
443 :     (the callee already pops the implicit argument which points to
444 :     the space reserved for the result)
445 :    
446 :     ----------------------------------------------------------------------
447 : allenleung 1662 Name: Allen Leung (leunga (at) reservoir (dot) com)
448 :     Date: 2004/10/24 14:00:00 EST
449 :     Tag: leunga-20041024-x86-gas-fucomip
450 :     Description:
451 :    
452 :     John discovered a bug in the syntax of fucomip.
453 :     The opcodes FU?COMIP? have been changed to
454 :    
455 :     fu?comip? %st(i), %st
456 :    
457 :     ----------------------------------------------------------------------
458 : mblume 1622 Name: Matthias Blume (blume (at) tti - c (dot) org)
459 : mblume 1656 Date: 2004/10/20 15:06:00 CDT
460 :     Tag: blume-20041020-standalone-backtrace
461 :     Description:
462 :    
463 :     Added a mechanism for getting back-trace information from standalone
464 :     programs. Here is how it works:
465 :    
466 :     1. The part of the program from which you want to get backtrace
467 :     information (usually the whole program) should be wrapped with
468 :     BackTrace.monitor. This is a (unit->'a)->'a function, and your
469 :     main program could be modified from something like
470 :    
471 :     fun main (pgm, args) = ...
472 :    
473 :     to
474 :    
475 :     fun main (pgm, args) = BackTrace.monitor (fn () => ...)
476 :    
477 :     2. To be able to access BackTrace.monitor, you have to add
478 :     library $smlnj-tdp/plugins.cm to the .cm file that contains your
479 :     main function.
480 :    
481 :     3. Remove all compiled code (i.e., all the .cm/ subdirectories that
482 :     CM might have created in the past for your project).
483 :    
484 :     4. Build the system using this command line:
485 :    
486 :     ml-build -Ctdp.instrument=true \$smlnj-tdp/back-trace.cm \
487 :     myprog.cm MyProg.main myprog
488 :    
489 :     instead of the usual
490 :    
491 :     ml-build myprog.cm MyProg.main myprog
492 :    
493 :     I changed a library name:
494 :    
495 :     $/trace-debug-profile.cm --> $smlnj-tdp/plugins.cm
496 :    
497 :     New libraries:
498 :    
499 :     $smlnj-tdp/back-trace.cm
500 :     -- when loaded causes the back-trace plugin to be installed
501 :     $smlnj-tdp/coverage.cm
502 :     -- when loaded causes the coverage plugin to be installed
503 :    
504 :     ----------------------------------------------------------------------
505 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
506 : mblume 1655 Date: 2004/10/18 16:45:00 CDT
507 :     Tag: blume-20041018-groupowner
508 :     Description:
509 :    
510 :     Added an "obsolete" warning for the "group owner" syntax to CM's parser.
511 :    
512 :     Eliminated group owner specs from .cm files throughout the source tree.
513 :    
514 :     ----------------------------------------------------------------------
515 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
516 : mblume 1653 Date: 2004/10/15 15:45:00 CDT
517 :     Tag: blume-20041015-coverage
518 :     Description:
519 :    
520 :     * Test coverage tool added!
521 :     * Further reorganization of tracing-, debugging-, and profiling support:
522 :    
523 :     - moved original BTImp -- now called BackTrace -- into a separate
524 :     library called $/trace-debug-profile.cm
525 :     - eliminated all mentions of BTrace from SMLofNJ.Internals
526 :     - only the instrumentation mechanism is now left in the compiler proper
527 :     - BackTrace module is a plugin which is NOT plugged in by default
528 :     - Coverage module is another such plugin
529 :    
530 :     To get the benefits of any of these plugin modules, the code in
531 :     question must be compiled with tdp instrumentation turned on. This
532 :     can be done by setting SMLofNJ.Internals.TDP.mode to true.
533 :     (The ref cell is also controlled via the -Ctdp.instrument=... switch.)
534 :    
535 :     Plugins are selected at link time. (Pre-compiled instrumented code
536 :     can be re-loaded with different plugins in effect.) When an
537 :     instrumented module is linked, whatever plugins are at that time
538 :     enabled will come into effect for that module.
539 :    
540 :     To enable the back-trace plugin, load library $/trace-debug-profile.cm
541 :     and invoke BackTrace.install() (e.g., from the interactive prompt).
542 :     To enable the coverage plugin, load the same library and invoke
543 :     Coverage.install().
544 :    
545 :     Back-traces are generated automatically on uncaught exceptions and
546 :     when the code in question explicitly invokes BackTrace.trigger().
547 :    
548 :     Coverage (and execution frequency-) information must be queried
549 :     explicitly by calling Coverage.not_covered and Coverage.hot_spots.
550 :    
551 :     ----------------------------------------------------------------------
552 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
553 : mblume 1652 Date: 2004/10/14 17:40:00 CDT
554 :     Tag: blume-20041014-tdp-core
555 :     Description:
556 :    
557 :     Snapshot of a significant overhaul of how the trace/debug/profile support
558 :     is hooked into the system (specifically: Core and SMLofNJ.Internals).
559 :    
560 :     ----------------------------------------------------------------------
561 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
562 : mblume 1650 Date: 2004/10/13 16:34:00 CDT
563 :     Tag: blume-20041013-tdp
564 :     Description:
565 :    
566 :     Some rationalization of names:
567 :    
568 :     structure BTrace -> structure TDPInstrument
569 :     etc.
570 :    
571 :     This is is preparation of using the original back-trace
572 :     instrumentation for other purposes. "TDP" stands for
573 :     Trace/Debug/Profile.
574 :    
575 :     The control flag controlling whether instrumentation is on or off is now
576 :     registered under a different name, so instead of running sml as
577 :    
578 :     sml -Cinstrument.btrace-mode=true
579 :    
580 :     one has to say
581 :    
582 :     sml -Ctdp.instrument=true
583 :    
584 :     ----------------------------------------------------------------------
585 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
586 : mblume 1645 Date: 2004/10/11 16:37:00 CDT
587 :     Tag: blume-20041011-regions
588 :     Description:
589 :    
590 :     Made some minor modifications to elabcore.sml to have source regions
591 :     be propagated more tightly -- resulting in better (i.e., smaller)
592 :     regions being reported in error- and debug messages.
593 :    
594 :     ----------------------------------------------------------------------
595 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
596 : mblume 1644 Date: 2004/10/08 22:50:00 CDT
597 :     Tag: blume-20041008-cmkw
598 :     Description:
599 :    
600 :     Fixed handling of keywords in .cm files: After seeing "is" the lexer
601 :     treats subsequent occurrences of "group", "library", "source", "is",
602 :     "*", and "-" as ordinary identifiers rather than keywords.
603 :    
604 :     Most seriously, this fixes a problem with CM's "shell" tool. The tool
605 :     is supposed to accept a tool argument called "source", but this did
606 :     not work because of the clash with the keyword.
607 :    
608 :     ----------------------------------------------------------------------
609 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
610 : mblume 1642 Date: 2004/10/07 16:00:00 CDT
611 :     Tag: blume-20041007-cleanup
612 :     Description:
613 :    
614 :     Assorted cleanup work:
615 :    
616 :     - got rid of intstrmap in favor of using the library's
617 :     hash table implementation
618 :     - threw out most of the pathnames stuff, as it was not used anyway
619 :     - simplified tokentable implementation
620 :     - fixed some minor spelling errors
621 :    
622 :     ----------------------------------------------------------------------
623 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
624 : mblume 1641 Date: 2004/10/06 15:15:15 CDT
625 :     Tag: blume-20041006-handler
626 :     Description:
627 :    
628 :     Cleaned up the absyn to reflect the invariant that HANDLE always
629 :     carries a FNexp as part of the type definition. This eliminates some
630 :     superfluous sanity checks at runtime down the road.
631 :    
632 :     Some minor cleanup of the btrace code.
633 :    
634 :     ----------------------------------------------------------------------
635 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
636 : mblume 1640 Date: 2004/10/01 10:20:30 CDT
637 :     Tag: blume-20041001-slave
638 :     Description:
639 :    
640 :     Added hack to make slave mode work in the presence of the version
641 :     tool. (Still, since the master does two passes over the code for
642 :     CMB.make, the release number gets bumped twice when slaves are
643 :     attached. I don't know if this is worth fixing...)
644 :    
645 :     ----------------------------------------------------------------------
646 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
647 : mblume 1639 Date: 2004/09/30 10:55:00 CDT
648 :     Tag: blume-20040930-version
649 :     Description:
650 :    
651 :     * Moved the "version" magic into its own little library under
652 : mblume 1672 src/system/smlnj/internal. This avoids expensive reconstruction of
653 :     a stable src/compiler/core.cm.
654 : mblume 1639
655 : mblume 1672 * At the same time, structure CompilerVersion is now known as
656 :     structure SMLNJVersion.
657 : mblume 1639
658 :     * Arranged for the version tool to NOT kick in when rebuilding the system
659 :     (makeml -rebuild, fixpt). Otherwise one would never reach a fixpoint.
660 :     Also, loading the versiontool does not work when rebuilding the system
661 :     because CM is not properly initialized at that time.
662 :    
663 :     ----------------------------------------------------------------------
664 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
665 : mblume 1638 Date: 2004/09/29 14:00:00 CDT
666 :     Tag: blume-20040929-autoversion
667 :     Description:
668 :    
669 :     Implemented some CM magic to have
670 :     file src/compiler/TopLevel/main/version.sml
671 :     generated automagically.
672 :     The version is taken from two files: config/version and config/release.
673 :     The first is expected to contain a two-part version number such as 110.49.
674 :     The second should contain a single number, but it may be missing.
675 :    
676 :     If the environment variable VERSIONTOOL_BUMP_RELEASE is defined at the
677 :     time the version tool is loaded (which is the first time you say CMB.make),
678 :     then the tool will increment the value stored in config/release every
679 :     time CMB.make is invoked.
680 :    
681 :     The binfile format is now insensitive to anything beyond the first
682 :     two components of a version number, so bumping the release does not render
683 :     binfiles incompatible. Auto-bumping can be used to keep track of versions
684 :     during development without invalidating existing binfiles.
685 :    
686 :     In any case, every CMB.make updates the date information in version.sml.
687 :     (This is the date that is printed in the banner.)
688 :    
689 :     ----------------------------------------------------------------------
690 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
691 : mblume 1634 Date: 2004/09/28 10:53:00 CDT
692 :     Tag: blume-20040928-controls
693 :     Description:
694 :    
695 :     Some cleanup of the controls code.
696 :    
697 :     ----------------------------------------------------------------------
698 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
699 : mblume 1633 Date: 2004/09/27 22:08:00 CDT
700 :     Tag: blume-20040927-controls
701 :     Description:
702 :    
703 :     Added two pieces of functionality to the Controls interface:
704 :    
705 :     1. val save'restore: 'a control -> unit -> unit
706 :    
707 :     grabs the current value of the control in stage 1 and restores it
708 :     in stage 2.
709 :    
710 :     2. val set' : 'a control * 'a -> unit -> unit
711 :    
712 :     stores the given value into the control in stage 2 (i.e., delayed)
713 :     but does all error checking in stage 1.
714 :     (This is for string controls that need to do parse their argument --
715 :     something that might fail. In some cases, notably in CM, one
716 :     already knows the intended argument but wants to delay the actual
717 :     assignment until a time when error recovery would be more difficult.)
718 :    
719 :     Changed the handling of controls in tool arguments to classes "sml" and
720 :     "lazysml":
721 :     - use Controls.save'restore as a more robust way of restoring the
722 :     old value (in particular: without having to re-parse the string)
723 :     - use controls to handle the "overload" keyword in the init group
724 :     (I believe this change actually fixes a long-standing obscure bug.)
725 :    
726 :     ----------------------------------------------------------------------
727 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
728 : mblume 1632 Date: 2004/09/27 17:00:00 CDT
729 :     Tag: blume-20040927-lazysml
730 :     Description:
731 :    
732 :     Added a new tool class called "lazysml" to CM's tool chest. The only
733 :     difference to "sml" is that compilation is done with Control.lazysml
734 :     set to true. A source of class "lazysml" is automatically recognized
735 :     by a file name suffix of ".lml".
736 :    
737 :     In addition to the above feature, the original class "sml" now also
738 :     supports a tool argument "lazy" which has the same effect. As a
739 :     result, the following three lines are equivalent:
740 :    
741 :     foo.sml : lazysml
742 :     foo.sml : sml (lazy)
743 :     foo.sml (lazy)
744 :    
745 :     The setting goes into effect both during parsing and during
746 :     compilation. The original setting is restored right after parsing and
747 :     after compilation, respectively.
748 :    
749 :     In addition to all the above, there is also a general mechanism to set
750 :     ANY of the "controls" that are available at the command line via
751 :     "-C..." on a per-sml-file basis. The same rules that apply for "lazy"
752 :     apply as well. (In fact, "lazy" is implemented as a special case of
753 :     the general mechanism.)
754 :    
755 :     The .cm file syntax uses a new keyword tool argument called "with".
756 :     There are several ways of indicating the desired settings:
757 :    
758 :     foo.sml (with:parser.quotations=true)
759 :     foo.sml (with:(name:parser.quotations value:true))
760 :     foo.sml (with:(name:name1 value:value1 name:name2 value:value2 ...))
761 :     foo.sml (with:(name1=value1 name2=value2 ...))
762 :     foo.sml (with:(name1=value1 name:name2 value:value2 name3=value3 ...))
763 :    
764 :     etc.
765 :    
766 :     Another possible abbreviation is to leave out the =v or value:v part
767 :     if the name refers to a boolean control (in which case the value is
768 :     taken to be true). Thus, one could get lazy sml also by saying:
769 :    
770 :     foo.sml (with:parser.lazy-keyword=true)
771 :     foo.sml (with:parser.lazy-keyword)
772 :     foo.sml (with:(name:parser.lazy-keyword value:true))
773 :     foo.sml (with:(name:parser.lazy-keyword))
774 :    
775 :     ----------------------------------------------------------------------
776 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
777 : mblume 1631 Date: 2004/09/24 16:22:00 CDT
778 :     Tag: blume-20040924-ppc-long-branch
779 :     Description:
780 :    
781 :     Turned message about "emiting long form of branch" off by default.
782 :     Added a control flag to turn it back on when desired.
783 :    
784 :     ----------------------------------------------------------------------
785 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
786 : mblume 1630 Date: 2004/09/24 16:05:00 CDT
787 :     Tag: blume-20040924-rounding
788 :     Description:
789 :    
790 :     Applied patch for setting rounding modes under Mac OS X. Thanks to
791 :     Melissa O'Neill for providing the code!
792 :    
793 :     ----------------------------------------------------------------------
794 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
795 : mblume 1629 Date: 2004/09/23 17:30:00 CDT
796 :     Tag: blume-20040923-envvars
797 :     Description:
798 :    
799 :     1. Changed definition of type ControlRegistry.registry_tree to
800 :     include control_info (i.e., the name of the controlling environment
801 :     variable).
802 :    
803 :     2. Added command-line flags -e and -E to print the names of environment
804 :     variables that can be used to control internal settings.
805 :     (This uses the new API mentioned in 1.)
806 :    
807 :     ----------------------------------------------------------------------
808 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
809 : mblume 1622 Date: 2004/09/13 16:50:00 CDT
810 :     Tag: Release_110_49
811 :     Description:
812 :    
813 :     New working version (110.49). NEW BOOTFILES!
814 :    
815 :     ----------------------------------------------------------------------
816 : mblume 1621 Name: Matthias Blume
817 :     Date: 2004/09/13 16:20:00 CDT
818 :     Tag: blume-20040913-config-mlrisc
819 :     Description:
820 :    
821 :     Put target "mlrisc" back into the default list.
822 :     (There is no harm in having it, and some users have expressed their
823 :     wish to have "mlrisc" included by default.)
824 :    
825 :     ----------------------------------------------------------------------
826 : jhr 1620 Name: John Reppy
827 :     Date: 2004/09/13
828 :     Tag: jhr-20040913-signals
829 :     Description:
830 :    
831 :     Fixed the signal masking code to properly nest mask/unmask operations
832 :     on a per-signal basis.
833 :    
834 :     ----------------------------------------------------------------------
835 : mblume 1619 Name: Matthias Blume (blume (at) tti - c (dot) org)
836 :     Date: 2004/09/08 13:20:00 CDT
837 :     Tag: blume-20040908-heap-magic
838 :     Description:
839 :    
840 :     Bumped the heap macig number to 0x09082004 to account for the changed
841 :     layout of the ML frame under MacOS X.
842 :    
843 :     ----------------------------------------------------------------------
844 : allenleung 1618 Name: Allen Leung (leunga (at) reservoir (dot) com)
845 :     Date: 2004/09/03 11:26:00 EST
846 :     Tag: leunga-20040903-cygwin-install
847 :     Description:
848 :    
849 :     Added a patch to _arch-n-opsys to enable the Cygwin runtime.
850 :     The Cygwin runtime is turned on by setting the environment
851 :     variable SMLNJ_CYGWIN_RUNTIME to 1.
852 :    
853 :     ----------------------------------------------------------------------
854 : mblume 1615 Name: Matthias Blume (blume (at) tti - c (dot) org)
855 : mblume 1617 Date: 2004/08/31 17:15:00 CDT
856 :     Tag: blume-20040831-core
857 :     Description:
858 :    
859 :     Added some exports to src/compiler/core.cm upon request by J. Joemann.
860 :    
861 :     ----------------------------------------------------------------------
862 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
863 : mblume 1616 Date: 2004/08/30 17:55:00 CDT
864 :     Tag: blume-20040830-installer
865 :     Description:
866 :    
867 :     Upon request by Johannes Joemann:
868 :    
869 :     - improved ML code of installer to fall back to coping when renaming
870 :     fails (i.e., when source and target are on different file systems);
871 :     the code compiles but has yet to be tested in anger
872 :     - removed mlrisc from list of default targets (config/targets)
873 :    
874 :     ----------------------------------------------------------------------
875 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
876 : mblume 1615 Date: 2004/08/27 17:20:00 CDT
877 :     Tag: blume-20040827-ptreql
878 :     Description:
879 :    
880 :     Added ptreql primop to structure InlineT (upon request from Larry
881 :     Paulson).
882 :    
883 :     ----------------------------------------------------------------------
884 : allenleung 1613 Name: Allen Leung (leunga (at) reservoir (dot) com)
885 : allenleung 1614 Date: 2004/08/15 21:21:00 EST
886 :     Tag: leunga-110_48-udgraph
887 :     Description:
888 :    
889 :     Another bug fix from Carl Hauser:
890 :    
891 :     diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml
892 :     > 48c48
893 :     > < | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else
894 :     > e::L)
895 :     > ---
896 :     > > | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L)
897 :     > Without this, any deletion of an edge in an undirected graph does severe
898 :     > violence to the graph.
899 :    
900 :     ----------------------------------------------------------------------
901 :     Name: Allen Leung (leunga (at) reservoir (dot) com)
902 : allenleung 1613 Date: 2004/08/10 23:35:00 EST
903 :     Tag: leunga-110_48-ppc
904 :     Description:
905 :    
906 :     The IBM/MacOS syntax switch on PPC was incorrectly swapped.
907 :    
908 :     ----------------------------------------------------------------------
909 : mblume 1602 Name: Matthias Blume (blume (at) tti - c (dot) org)
910 : mblume 1615 Date: 2004/08/10 12:00:00 CDT
911 : mblume 1602 Tag: Release_110_48
912 :     Description:
913 :    
914 :     New working version (110.48). NEW BOOTFILES!
915 :    
916 :     ----------------------------------------------------------------------
917 : allenleung 1599 Name: Allen Leung (leunga (at) reservoir (dot) com)
918 :     Date: 2004/08/09 12:21:00 EST
919 :     Tag: leunga-110_47-dijsktra
920 :     Description:
921 :    
922 :     Bug fix from Carl Hauser:
923 :    
924 :     single_source_shortest_paths in dijkstra.sml was observed to get wrong
925 :     answers (by comparing to single_source_shortest_paths in bellman-ford.sml).
926 :    
927 :     The problem is that following the expression A.update(dist,s,Num.zero)
928 :     it is necessary to update the priority queue using Q.decreaseWeight(Q,s).
929 :    
930 :     ----------------------------------------------------------------------
931 : mblume 1595 Name: Matthias Blume (blume (at) tti - c (dot) org)
932 :     Date: 2004/08/06 18:10:00 CDT
933 :     Tag: blume-20040806-cmdline
934 :     Description:
935 :    
936 :     Fiddled with handling of command-line options:
937 :    
938 :     * sml now quits after processing the command line
939 :     if -H, -S, -h<n>, or -s<n> appears as the last
940 :     command-line argument
941 :     * a new option -q terminates the session when encountered on
942 :     the command line; subsequent arguments will be ignored
943 :     * bug fixes: short (erroneous) arguments are no longer ignored
944 :     completely
945 :    
946 :     ----------------------------------------------------------------------
947 : allenleung 1593 Name: Allen Leung (leunga (at) reservoir (dot) com)
948 :     Date: 2004/08/04 18:17:00 EST
949 :     Tag: leunga-110_47-ppc-ibm-asm
950 :     Description:
951 :    
952 :     - Added minimal IBM assembly syntax support for PowerPC.
953 :    
954 :     - Cygwin: manually changed the file cygwin.def. Some exported symbols have
955 :     been altered in the runtime. We need an automatic way to keep the file
956 :     in sync.
957 :    
958 :     ----------------------------------------------------------------------
959 : mblume 1548 Name: Matthias Blume (blume (at) tti - c (dot) org)
960 : mblume 1581 Date: 2004/08/04 14:00:00 CDT
961 :     Tag: Release_110_47
962 :     Description:
963 :    
964 :     New working version (110.47). NEW BOOTFILES!
965 :    
966 :     ----------------------------------------------------------------------
967 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
968 : mblume 1580 Date: 2004/08/03 14:25:00 CDT
969 :     Tag: blume-20040803-callingconv
970 :     Description:
971 :    
972 :     Added low-level support for choosing C calling conventions by
973 :     twiddling the type of rawccall. (See
974 :     src/compiler/Semant/types/cproto.sml for details.)
975 :    
976 :     ----------------------------------------------------------------------
977 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
978 : mblume 1579 Date: 2004/08/02 15:55:00 CDT
979 :     Tag: blume-20040802-backout
980 :     Description:
981 :    
982 :     Backed out of change to win32-filesys.c. The earlier patch to
983 :     get_file_time caused CM to produce files with the wrong time stamp.
984 :    
985 :     ----------------------------------------------------------------------
986 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
987 : mblume 1573 Date: 2004/08/02 14:45:00 CDT
988 :     Tag: blume-20040802-nlffi-win32
989 :     Description:
990 :    
991 :     Added NLFFI support for Win32, adapted from a patch provided by David
992 :     Hansel. This is currently completely untested. Also, the issue
993 :     concerning stdcall vs. ccall is still unresolved.
994 :    
995 :     ----------------------------------------------------------------------
996 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
997 : mblume 1572 Date: 2004/07/30 17:55:00 CDT
998 :     Tag: blume-20040730-various
999 :     Description:
1000 :    
1001 :     Gearing up towards 110.47...
1002 :    
1003 :     - various minor bugfixes to ml-nlffigen
1004 :     - a beginning of a manual for nlffi
1005 :    
1006 :     - eliminated 'export name=value' in config/install.sh as this does
1007 :     not work with certain versions of /bin/sh
1008 :     (Thanks to David King at Motorola for catching this.)
1009 :    
1010 :     - several bugfixes provided or suggested by David Hansel at Reactive Systems:
1011 :     - added a test for tm==NULL to gmtime.c and localtime.c
1012 :     - applied patch for incorrect GetFileTime under win32
1013 :     - toSeconds -> toMilliseconds in Win32/win32-process.sml
1014 :    
1015 :     ----------------------------------------------------------------------
1016 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1017 : mblume 1557 Date: 2004/07/21 18:20:00 CDT
1018 :     Tag: blume-20040721-nlffigen
1019 :     Description:
1020 :    
1021 :     - Fixed minor issue in ml-nlffigen: Now generate structure T_foo
1022 :     for a typedef to an incomplete type, but leave out the "typ" member.
1023 :     (This is just for consistency.)
1024 :     - Started to produce what is supposed to become better (i.e., comprehensive)
1025 :     documentation of what ml-nlffigen does and produces.
1026 :    
1027 :     ----------------------------------------------------------------------
1028 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1029 : mblume 1548 Date: 2004/07/14 16:25:00 CDT
1030 :     Tag: blume-20040714-union
1031 :     Description:
1032 :    
1033 :     Added C_UNION to c-calls/c-types.sml and updated the machinery
1034 :     (ml-nlffigen, cproto.sml) that conveys C function interface
1035 :     information to the code generator.
1036 :    
1037 :     However, the actual architecture-specific implementation of function
1038 :     arguments and results that are C unions is still not implemented.
1039 :    
1040 :     ----------------------------------------------------------------------
1041 : allenleung 1539 Name: Allen Leung (leunga (at) reservoir (dot) com)
1042 : allenleung 1546 Date: 2004/07/14 14:38:00 EST
1043 :     Tag: leunga-110_46_1-ppc-lwzu
1044 :     Description:
1045 :    
1046 :     Added these instructions to the PowerPC architecture:
1047 :     LBZU(X), LHZU(X), LWZU(X),
1048 :     STWU(X), STFDU, STFSU
1049 :    
1050 :     etc...
1051 :    
1052 :     Note: I haven't added their instruction encoding into the description.
1053 :    
1054 :     ----------------------------------------------------------------------
1055 :     Name: Allen Leung (leunga (at) reservoir (dot) com)
1056 : allenleung 1539 Date: 2004/07/13 15:04:00 EST
1057 :     Tag: leunga-110_46_1-ppc-lwarx
1058 :     Description:
1059 :    
1060 :     Added the two instructions LWARX and STWCX to the PowerPC
1061 :     instruction set.
1062 :    
1063 :     A (untested) rewrite of loop-structure.sml. The old version
1064 :     is completely broken.
1065 :    
1066 :     ----------------------------------------------------------------------
1067 : mblume 1479 Name: Matthias Blume (blume (at) tti - c (dot) org)
1068 : mblume 1537 Date: 2004/07/13 13:50:00 CDT
1069 :     Tag: blume-20040713-nlffi
1070 :     Description:
1071 :    
1072 :     - use paramAlloc to report c-calls with too many arguments
1073 :     (for PPC version where parameter area is pre-allocated)
1074 :     - added ccall_maxargspace to machspec (to implement the above)
1075 :     - made "make" commend in CM's "make" tool configurable
1076 :     - added option (default: on) for passing the name of the SML/NJ's "bin"
1077 :     directory to "make"; the call looks like this:
1078 :    
1079 :     make <options> SMLNJ_BINDIR=<dir> <target>
1080 :    
1081 :     This can be used by the Makefile to, e.g., pick the "right" version
1082 :     of ml-nlffigen.
1083 :     - minor code tweaks
1084 :    
1085 :     ----------------------------------------------------------------------
1086 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1087 : mblume 1532 Date: 2004/07/12 22:50:00 CDT
1088 :     Tag: blume-110_46_1-macosx-nlffi
1089 :     Description:
1090 :    
1091 :     NLFFI under Mac OS X now working (sort of). This is largely untested,
1092 :     though.
1093 :    
1094 :     Note: 1. You have to make a new, clean build of the runtime system.
1095 :     2. There are new BOOTFILES, you have to use them!
1096 :     (Doing the bootstrap process yourself would be *very* painful!
1097 :     If you absolutely have to do it, build the system under
1098 :     a different architecture and then cross-compile.)
1099 :    
1100 :     Version bumped to 110.46.1 to account for runtime data format changes.
1101 :    
1102 :     ----------------------------------------------------------------------
1103 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1104 : mblume 1515 Date: 2004/06/18 14:30:00 CDT
1105 :     Tag: blume-20040618-unix
1106 :     Description:
1107 :    
1108 :     Changed the implementation of structure Unix so that the same stream
1109 :     is returned every time one of the {text,bin}{In,Out}streamOf functions
1110 :     is invoked on the same proc. This is not what the spec currently
1111 :     says -- although IMO it arguably should. (See discussion below.)
1112 :    
1113 :     ----------------------------------------------------------------------
1114 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1115 : mblume 1507 Date: 2004/06/17 18:15:00 CDT
1116 :     Tag: Release_110_46
1117 :     Description:
1118 :    
1119 :     New working version (110.46). NEW BOOTFILES!
1120 :    
1121 :     ----------------------------------------------------------------------
1122 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1123 : mblume 1506 Date: 2004/06/17 17:20:00 CDT
1124 :     Tag: blume-20040617-timer-unix
1125 :     Description:
1126 :    
1127 :     Changed the interface of structures Timer and Unix to match the most
1128 :     recent Basis spec.
1129 :    
1130 :     In the case of Unix there still seems to be an open/weird issue:
1131 :    
1132 :     The {text,bin}{In,Out}streamOf functions are supposed to create
1133 :     fresh streams whenever they are called -- as opposed to have them
1134 :     return the same stream every time. This design is supposed to
1135 :     prevent space leaks caused by proc values hanging on to streams.
1136 :    
1137 :     The reap function, on the other hand, is supposed to close the
1138 :     streams. This cannot be done without having a handle on the
1139 :     stream in proc after all...
1140 :    
1141 :     I took the liberty to implement the following stopgap solution:
1142 :    
1143 :     The proc value hangs on to the most recently created stream(s).
1144 :     Reap closes those. If either or both of the two streams hadn't
1145 :     been created at all yet, then reap will close the corresponding
1146 :     file descriptors directly.
1147 :    
1148 :     PS: I don't understand the original space leak argument anymore. If
1149 :     a proc hangs on to the imperative stream, then I/O operations on those
1150 :     will advance the state of the cached stream and avoid the space leak.
1151 :    
1152 :     ----------------------------------------------------------------------
1153 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1154 : mblume 1500 Date: 2004/05/28 16:45:00 CDT
1155 :     Tag: blume-20040528-basis
1156 :     Description:
1157 :    
1158 :     Added signature PACK_REAL and exported functor PrimIO.
1159 :    
1160 :     ----------------------------------------------------------------------
1161 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1162 : mblume 1498 Date: 2004/05/25 16:00:00 CDT
1163 :     Tag: blume-20040525-group-owner
1164 :     Description:
1165 :    
1166 :     CM now ignores (but still accepts) the "owner" information in group
1167 :     descriptions. The owner of a group is its next enclosing
1168 :     library. Each group must have a unique owner. (There is a virtual
1169 : mblume 1505 "toplevel" library that owns groups which are not nested within a real
1170 : mblume 1498 library.) Previously, each group had to explicitly declare its owner,
1171 :     and CM would check that such a declaration is correct. The new scheme
1172 :     is to have CM check that for each group there is precisely one owning
1173 :     library.
1174 :    
1175 :     The advantage of the new scheme is that the programmer no longer needs
1176 :     to maintain the somewhat annoying owner information. The downside is
1177 :     that CM cannot enforce the ownership rule across multiple runs of
1178 :     CM.make. Fortunately, enclosing the same group in two different
1179 :     libraries A and B which are not part of the same program does not
1180 :     cause real problems.
1181 :    
1182 :     ----------------------------------------------------------------------
1183 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1184 : mblume 1496 Date: 2004/05/20 16:00:00 CDT
1185 :     Tag: blume-20040520-win32
1186 :     Description:
1187 :    
1188 :     Made the win32 version work again. (Strangely, a misplaced comma had
1189 :     slipped into win32-process.c which prevented the runtime from being
1190 :     compiled correctly.)
1191 :    
1192 :     Also, included a minor addition to ml-build.bat analogous to what was
1193 :     done in blume-20040519-ml-build.
1194 :    
1195 :     ----------------------------------------------------------------------
1196 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1197 : mblume 1494 Date: 2004/05/19 22:10:00 CDT
1198 :     Tag: blume-20040519-ml-build
1199 :     Description:
1200 :    
1201 :     Arranged for ml-build to clean up after itself a little bit better.
1202 :     The script generates a temporary SML source file and compiles it using
1203 :     CM, so CM generates metadata (GUID, SKEL, objectfile) for it. It now
1204 :     gets rid of those at the end, so they don't accumulate under .cm.
1205 :    
1206 :     This required a minor change to install.sh because the name of the
1207 :     metadata directory (default: .cm) is actually configurable at
1208 :     installation time.
1209 :    
1210 :     ----------------------------------------------------------------------
1211 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1212 : mblume 1491 Date: 2004/05/18 15:50:00 CDT
1213 :     Tag: blume-20040518-mkreader
1214 :     Description:
1215 :    
1216 :     Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
1217 :     implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
1218 :    
1219 :     ----------------------------------------------------------------------
1220 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1221 : mblume 1489 Date: 2004/05/11 14:35:00 CDT
1222 :     Tag: blume-20040511-win32sock
1223 :     Description:
1224 :    
1225 :     Added previously missing support for many socket-related functions
1226 :     under win32. Thanks to David Hansel <hansel@reactive-systems.com>
1227 :     for the voluminous patch!
1228 :    
1229 :     (I have not tested this patch under win32 yet.)
1230 :    
1231 : mblume 1490 Here is David's e-mail:
1232 :    
1233 :     Hi,
1234 :    
1235 :     Attached to this email you find a diff against sml/nj 110.45
1236 :     that will enable socket support under Windows.
1237 :    
1238 :     To apply the patch (using unix or cygwin)
1239 :     1) gunzip runtime.diff.gz
1240 :     2) "cd" into "src/runtime" in the source tree of a fresh
1241 :     110.45 installation.
1242 :     3) patch -p 1 < [your/path/to]runtime.diff
1243 :    
1244 :     The code compiles fine but has NOT yet been extensively tested.
1245 :     I only ran a few tests for basic socket client functionality
1246 :     (which worked fine). Especially the functions that use ioctl
1247 :     are not tested at all and might not work (see below).
1248 :    
1249 :     I implemented this since we want to move to a newer version of sml/nj
1250 :     but need socket support in order to use it. This is the first time I
1251 :     even had a look at the sml/nj source, so please review my changes
1252 :     before making this part of the distribution! Here are a few issues
1253 :     that I think might be better for someone to solve who is more
1254 :     familiar with the sml/nj source (and socket programming):
1255 :    
1256 :     - getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
1257 :     exception since I could not figure out what the windows equivalent
1258 :     of these functions is
1259 :    
1260 :     - In sockets-osdep.h there are a some #include statements that are
1261 :     only used in a few files that include sockets-osdep.h
1262 :    
1263 :     - In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
1264 :     does not process its return value since I don't know how to
1265 :     report an error upwards.
1266 :    
1267 :     - It would probably be good to have a call to WSACleanup() when
1268 :     the library is unloaded (if there is such a possibility).
1269 :     Otherwise I think Windows will take care of this automatically
1270 :     when the process finishes.
1271 :    
1272 :     - I used ioctlsocket() as a replacement for ioctl() but I have
1273 :     no idea if that is actually the proper replacement on Windows.
1274 :    
1275 :     - All these issues are marked in the code by "FIXME" comments.
1276 :    
1277 :     We use sml/nj extensively in our products and are quite happy
1278 :     with it. I hope this contribution will help you.
1279 :    
1280 :     Keep up the good work!
1281 :    
1282 :     David
1283 :    
1284 : mblume 1489 ----------------------------------------------------------------------
1285 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1286 : mblume 1488 Date: 2004/05/11 14:20:00 CDT
1287 :     Tag: blume-20040511-installml
1288 :     Description:
1289 :    
1290 :     Fixed two bugs in installml script. (Thanks to Vesa A. Norrman for
1291 :     the patch.)
1292 :    
1293 :     ----------------------------------------------------------------------
1294 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1295 : mblume 1487 Date: 2004/05/11 14:05:00 CDT
1296 :     Tag: blume-20040511-nlffi-netbsd
1297 :     Description:
1298 :    
1299 :     Added support for nlffi under netbsd. (Thanks to Vesa A. Norrman for
1300 :     the patch.)
1301 :    
1302 :     ----------------------------------------------------------------------
1303 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1304 : mblume 1486 Date: 2004/05/11 12:05:00 CDT
1305 :     Tag: blume-20040511-exports
1306 :     Description:
1307 :    
1308 :     As per request by Adam Chlipala <adam@hcoop.net>, extended various
1309 :     export lists in compiler-related .cm-files.
1310 :    
1311 :     ----------------------------------------------------------------------
1312 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1313 : mblume 1485 Date: 2004/05/11 11:35:00 CDT
1314 :     Tag: blume-20040511-allsource
1315 :     Description:
1316 :    
1317 :     The installer now honors the "src-smlnj" target again, although its meaning
1318 :     has changed from "all sources required for the compiler" to "all sources
1319 :     the installer knows about". In other words, if you enable "src-smlnj"
1320 :     in the "targets" file, then the installer will pull in sources for
1321 :     everything. (Notice that this refers to source code only. Compiled
1322 :     code is still only installed for modules that were requested explicitly
1323 :     or which are required for other modules that were requested explicitly.)
1324 :    
1325 :     ----------------------------------------------------------------------
1326 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1327 : mblume 1482 Date: 2004/04/23 17:40:00 CDT
1328 :     Tag: blume-20040423-ieee-scan
1329 :     Description:
1330 :    
1331 :     Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
1332 :     in the exponent calculation we get INF or ZERO (depending on the mantissa
1333 :     and the sign of the exponent).
1334 :    
1335 :     ----------------------------------------------------------------------
1336 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1337 : mblume 1480 Date: 2004/04/23 10:40:00 CDT
1338 :     Tag: blume-20040423-ml-build
1339 :     Description:
1340 :    
1341 :     The ml-build script now terminates with a non-0 status when something
1342 :     goes wrong.
1343 :    
1344 :     ----------------------------------------------------------------------
1345 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1346 : mblume 1479 Date: 2004/04/22 16:35:00 CDT
1347 :     Tag: blume-20040422-Option
1348 :     Description:
1349 :    
1350 :     Made exception Option to be the same as exception Option.Option
1351 :     (as it should be).
1352 :    
1353 :     ----------------------------------------------------------------------
1354 : allenleung 1468 Name: Allen Leung (leunga (at) reservoir (dot) com)
1355 :     Date: 2004/03/19 14:40:00 EST
1356 :     Tag: leunga-20040319-cygwin-nlffi
1357 :     Description:
1358 :    
1359 :     Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
1360 :     of SML/NJ. The problem is that
1361 :    
1362 :     lib = dlopen(NULL, ...)
1363 :     f = dlsym(lib, "malloc");
1364 :    
1365 :     does not work on Windows unless we explicitly export symbols
1366 :     such as 'malloc' during linking. We fixed this by explicitly
1367 :     exporting the required symbols with the magic gcc incantation:
1368 :    
1369 :     -Wl,--export-all cygwin.def
1370 :    
1371 :     where cygwin.def is a file containing all the symbols that
1372 :     we wish to export.
1373 :    
1374 :     I suspect this is a Windows problem and we'll have to
1375 :     do the same (somehow with windows compilers) when
1376 :     we build the native win32 version with the system
1377 :     calls LoadLibrary/GetProcAddress.
1378 :    
1379 :     ----------------------------------------------------------------------
1380 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
1381 : mblume 1465 Date: 2004/03/04 16:35:00 CST
1382 :     Tag: blume-20040304-intinf-fmt
1383 :     Description:
1384 :    
1385 :     Fixed problem with IntInf.fmt (sign would show up on the right instead
1386 :     of on the left for BIN, OCT, and HEX).
1387 :    
1388 :     ----------------------------------------------------------------------
1389 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1390 : mblume 1464 Date: 2004/03/04 11:25:00 CST
1391 :     Tag: blume-20040304-symlinks
1392 :     Description:
1393 :    
1394 :     Fixed problem with installer script (unix only) where bin/ml-yacc and
1395 :     friends pointed (via symlinks) to absolute locations instead of just
1396 :     .run-sml. This was reported by Vesa A Norrman.
1397 :    
1398 :     ----------------------------------------------------------------------
1399 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1400 : mblume 1455 Date: 2004/02/13 14:50:00 CST
1401 :     Tag: Release_110_45
1402 :     Description:
1403 :    
1404 :     New working version (110.45). New bootfiles.
1405 :    
1406 :     ----------------------------------------------------------------------
1407 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1408 : mblume 1448 Date: 2004/01/26 15:15:15 CST
1409 :     Tag: blume-20040126-toplevel
1410 :     Description:
1411 :    
1412 :     Improved handling of exceptions at the interactive toplevel.
1413 :    
1414 :     ----------------------------------------------------------------------
1415 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1416 :     Date: 2004/01/26 11:25:00
1417 : mblume 1446 Tag: blume-20040126-app
1418 :     Description:
1419 :    
1420 :     Type of top-level "app" corrected.
1421 : mblume 1447 Added code for setting vp_limitPtrMask to Win32-specific runtime.
1422 : mblume 1446
1423 :     ----------------------------------------------------------------------
1424 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1425 : mblume 1427 Date: 2003/11/18 17:10 CST
1426 :     Tag: blume-20031118-basis-fiddle
1427 :     Description:
1428 :    
1429 :     - changed Timer interface to what might become the spec
1430 :     - POSIX_FLAGS -> BIT_FLAGS according to spec
1431 :     - some other minor discrepancies wrt. spec eliminated
1432 :    
1433 :     ----------------------------------------------------------------------
1434 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1435 : mblume 1414 Date: 2003/11/06 12:00:00 CST
1436 :     Tag: Release_110_44
1437 :     Description:
1438 :    
1439 :     New working version (110.44). New bootfiles.
1440 :    
1441 :     ----------------------------------------------------------------------
1442 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1443 : mblume 1411 Date: 2003/11/04 11:50:00 CST
1444 :     Tag: blume-20031104-move-libraries
1445 :     Description:
1446 :    
1447 :     Eliminated the "dont_move_libraries" directive in config/targets.
1448 :     (The mechanism was broken and could not be fixed easily. Moreover,
1449 :     there does not seem to be any reason not to move all libraries into
1450 :     lib during installation. I originally implemented this directive as a
1451 :     backward-compatibility feature when I first introduced the new CM.
1452 :     Now that things have been stable for a long time and going back to the
1453 :     old CM is not an option, there is no reason to keep it around.)
1454 :    
1455 :     ----------------------------------------------------------------------
1456 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1457 : mblume 1409 Date: 2003/11/03 16:00:00 CST
1458 :     Tag: blume-20031103-installdir
1459 :     Description:
1460 :    
1461 :     Made installer honor INSTALLDIR variable again. (Thanks to Chris
1462 :     Richards for pointing out the problem and providing the solution.)
1463 :    
1464 :     ----------------------------------------------------------------------
1465 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1466 : mblume 1400 Date: 2003/10/01 17:05:00 CDT
1467 :     Tag: blume-20031001-lal-mlrisc
1468 :     Description:
1469 :    
1470 :     MLRISC bug fix from Lal.
1471 :    
1472 :     ----------------------------------------------------------------------
1473 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1474 : mblume 1399 Date: 2003/09/30 16:10:00 CDT
1475 :     Tag: blume-20030930-primio-bat
1476 : mblume 1398 Description:
1477 :    
1478 :     1. Added openVector, nullRd, and nullWr to PRIM_IO.
1479 :     2. Improved .bat files (for Win32 port) to make things work under Win95.
1480 :     (thanks to Aaron S. Hawley for this one)
1481 :    
1482 :     ----------------------------------------------------------------------
1483 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1484 : mblume 1395 Date: 2003/09/26 16:05:00 CDT
1485 :     Tag: blume-20030926-wrappriv
1486 :     Description:
1487 :    
1488 :     Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
1489 :    
1490 :     ----------------------------------------------------------------------
1491 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1492 : mblume 1394 Date: 2003/09/26 15:00:00 CDT
1493 :     Tag: blume-20030926-110_43_3
1494 :     Description:
1495 :    
1496 :     - additional cleanup
1497 :     - version number bump, NEW BOOTFILES
1498 :    
1499 :     ----------------------------------------------------------------------
1500 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1501 : mblume 1393 Date: 2003/09/26 12:00:00 CDT
1502 :     Tag: blume-20030926-ppautoload
1503 :     Description:
1504 :    
1505 :     I modified the read-eval-print loop so that the autoloader gets
1506 :     invoked whenever the prettyprinter tries to look up a symbol that
1507 :     is not currently defined in the toplevel environment but which
1508 :     appears in CM's autoload registry. As a result, we see far fewer of
1509 :     those ?.Foo.Bar.xxx names in the prettyprinter's output.
1510 :    
1511 :     In addition to this I tried to clean up some pieces of the Basis
1512 :     implementation (e.g., Socket, Word8Array) in order to prevent other
1513 :     instances of these ?.Foo.Bar.xxx names from being printed.
1514 :    
1515 :     The mechanism that picks names for types still needs some work, though.
1516 :     (Right now it seems that if there is a type A.t which is defined to
1517 : mblume 1394 be B.u, but B is unavailable at toplevel, then A.t gets printed as
1518 :     "?.B.u" although the perhaps more sensible solution would be to use
1519 : mblume 1393 "A.t" in this case. In other words, the prettyprinter should follow
1520 :     a chain of DEFtycs not farther than there are corresponding toplevel
1521 :     names in the current environment.)
1522 :    
1523 :     ----------------------------------------------------------------------
1524 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1525 : mblume 1391 Date: 2003/09/24 16:31:00 CDT
1526 :     Tag: blume-20030924-installer
1527 :     Description:
1528 :    
1529 :     Another installer tweak: All the ML code for the installer is now
1530 :     compiled during CMB.make and put into a little library called
1531 :     $smlnj/installer.cm. The installation then simply invokes
1532 :    
1533 :     sml -m $smlnj/installer.cm
1534 :    
1535 :     and everything happens automagically.
1536 :    
1537 :     Win32: ML code senses value of environment variable SMLNJ_HOME.
1538 :     Unix: ML code senses values of environment variables ROOT, CONFIGDIR,
1539 :     and BINDIR.
1540 :    
1541 :     The new scheme guarantees that the ML code responsible for the installation
1542 :     is in sync with the APIs of the main system. Also, the installer is
1543 :     somewhat faster because the installer script is precompiled.
1544 :    
1545 :     ----------------------------------------------------------------------
1546 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1547 : mblume 1390 Date: 2003/09/24 15:35:00 CDT
1548 :     Tag: blume-20030924-synsock
1549 :     Description:
1550 :    
1551 :     Added a signature SYNCHRONOUS_SOCKET to basis.cm. This is like SOCKET
1552 :     but excludes all non-blocking operations. Defined SOCKET (in Basis)
1553 :     and CML_SOCKET in terms of SYNCHRONOUS_SOCKET. Removed superfluous
1554 :     implementations of non-blocking operations from CML's Socket
1555 :     structure.
1556 :    
1557 :     ----------------------------------------------------------------------
1558 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1559 : mblume 1389 Date: 2003/09/24 15:10:05 CDT
1560 :     Tag: blume-20030924-sockets
1561 :     Description:
1562 :    
1563 :     1. Fixed SOCKET API and implementation to match Basis spec.
1564 :     This required changing the internal representation of sockets to one
1565 :     that remembers (for each socket file descriptor) whether it is currently
1566 :     blocking or non-blocking. This state is maintained lazily (i.e., a system
1567 :     call is made only if the state actually needs to change).
1568 :    
1569 :     2. OS-specific details of sockets were moved into separate files, thus
1570 :     making it possible to unify the bulk of the socket implementations
1571 :     between Unix and Win32.
1572 :    
1573 :     3. CML's socket API changed accordingly.
1574 :     (Note that we need to remove non-blocking functions from this API
1575 :     since they are redundant in the case of CML!)
1576 :    
1577 :     4. CML's socket implementation now makes use of non-blocking functions
1578 :     provided by Basis, thus removing all OS-dependent code from this part
1579 :     of CML.
1580 :    
1581 :     5. Changed Real64.precision from 52 to 53. Minor cleanup in Real64 code.
1582 :    
1583 :     ----------------------------------------------------------------------
1584 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1585 : mblume 1387 Date: 2003/09/22 12:10:00 CDT
1586 : mblume 1388 Tag: blume-20030922-110_43_2
1587 : mblume 1387 Description:
1588 :    
1589 :     Made a new interim version and bootfiles for developer's bootstrapping
1590 :     convenience.
1591 :    
1592 :     110.43.2 -- NEW BOOTFILES
1593 :    
1594 :     ----------------------------------------------------------------------
1595 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1596 : mblume 1385 Date: 2003/09/19 15:55:00 CDT
1597 :     Tag: blume-20030919-cmdir
1598 :     Description:
1599 :    
1600 :     1. new-install.sh -> install.sh
1601 :     2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
1602 :     3. tweaked installer so that another name instead of .cm can be chosen
1603 :     at install time (by setting the CM_DIR_ARC environment variable
1604 :     during installation); once installation is complete, the name is
1605 :     fixed
1606 :    
1607 :     ----------------------------------------------------------------------
1608 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1609 : mblume 1384 Date: 2003/09/18 16:00:00 CDT
1610 :     Tag: blume-20030918-110_43_1
1611 :     Description:
1612 :    
1613 :     Made a new interim version and bootfiles for developer's bootstrapping
1614 :     convenience.
1615 :    
1616 :     110.43.1 -- NEW BOOTFILES
1617 :    
1618 :     ----------------------------------------------------------------------
1619 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1620 : mblume 1383 Date: 2003/09/18 15:20:00 CDT
1621 :     Tag: blume-20030918-misc
1622 :     Description:
1623 :    
1624 :     1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
1625 :     this seems to be controversial at the moment) and used those in
1626 :     Posix.ProcEnv.times.
1627 :    
1628 :     2. Added Time.{from,to}Nanoseconds to Time.
1629 :    
1630 :     3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
1631 :     For example, fromLargeInt never needs to look at more than 3 "big
1632 :     digits" to get its 53 bits of precision.
1633 :    
1634 :     ----------------------------------------------------------------------
1635 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
1636 : mblume 1381 Date: 2003/09/17 16:30:00 CDT
1637 :     Tag: blume-20030917-real32-slices
1638 :     Description:
1639 :    
1640 :     Added an entry to the primitive environment
1641 :     (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
1642 :     added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
1643 :    
1644 :     Removed some of the "magic" constants in real64.sml and replaced them
1645 :     with code that generates these values from their corresponding
1646 :     integer counterparts.
1647 :    
1648 :     Made all(?) the slice-related changes to the Basis and made everything
1649 :     compile again...
1650 :    
1651 :     ----------------------------------------------------------------------
1652 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1653 : mblume 1375 Date: 2003/09/15 17:45:00 CDT
1654 :     Tag: blume-20030915-rbase
1655 :     Description:
1656 :    
1657 :     Fixed bug in Real.fromLargeInt.
1658 :    
1659 :     ----------------------------------------------------------------------
1660 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1661 : mblume 1369 Date: 2003/09/13 18:11:00 CDT
1662 :     Tag: blume-20030913-libinstall
1663 :     Description:
1664 :    
1665 :     Minor bugfix in config/libinstall (set anchor with path to
1666 :     standalone tool after installing it, otherwise libraries that
1667 :     need ml-lex or ml-yacc won't compile the first time the installer
1668 :     runs).
1669 :    
1670 :     ----------------------------------------------------------------------
1671 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1672 : mblume 1368 Date: 2003/09/12 11:45:00 CDT
1673 :     Tag: blume-20030912-various
1674 :     Description:
1675 :    
1676 :     - fixed bug in Real.toLargeInt
1677 :     - fixed bug in Posix.ProcEnv.times
1678 :     - changed inputLine functions to return an option
1679 :     - minor installer improvements / bugfixes
1680 :     - changed default @SMLalloc parameter for x86/celeron to 64k
1681 :    
1682 :     ----------------------------------------------------------------------
1683 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1684 : mblume 1356 Date: 2003/09/09 22:00:00 CDT
1685 :     Tag: Release_110_43
1686 :     Description:
1687 :    
1688 :     New working release 110.43. New bootfiles.
1689 :    
1690 :     ----------------------------------------------------------------------
1691 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1692 : mblume 1354 Date: 2003/09/09 19:20:00 CDT
1693 :     Tag: blume-20030909-installer
1694 :     Description:
1695 :    
1696 :     Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
1697 :     Modified config/install.bat to take advantage of it. Also modified
1698 :     config/install.sh (and called it config/new-install.sh) to take advantage
1699 :     of it on Unix systems. (The SML code is (supposed to be) platform-
1700 :     independent.)
1701 :    
1702 :     The installer can now install everything under Win32
1703 :     as well as under *nix as long as it compiles.
1704 :    
1705 :     Other changes:
1706 :    
1707 :     - made CML compile again under Win32
1708 :     - made eXene compile under Win32 (by providing a fake structure UnixSock
1709 :     and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
1710 :     - fixed a bug in nowhere: it assumed that type OS.Process.status is the
1711 :     same as type int; under Win32 it isn't
1712 :     - fixed some slice-related problems in the win32-specific parts of CML
1713 :     - added a functor argument "sameVol" to os-path-fn.sml in the Basis
1714 :     (under Win32, the volume name is case-insensitive, and the
1715 :     OS.Path code compares volume names for equality)
1716 :    
1717 :     ----------------------------------------------------------------------
1718 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1719 : mblume 1353 Date: 2003/09/08 11:55:00 CDT
1720 :     Tag: blume-20030908-fullpath
1721 :     Description:
1722 :    
1723 :     Made Win32 version of OS.FileSys.fullPath return current directory
1724 :     when given an empty string. This is what the spec says, and incidentally,
1725 :     CM depends on it. (CM otherwise goes into an infinite loop in certain
1726 :     cases when presented with the name of a non-existing .cm file.)
1727 :    
1728 :     ----------------------------------------------------------------------
1729 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1730 : mblume 1350 Date: 2003/09/04 16:30:00 CDT
1731 : mblume 1352 Tag: blume-20030905-slices-etc
1732 : mblume 1350 Description:
1733 :    
1734 :     1. Changed interface to vectors and arrays in Basis to match
1735 :     (draft) Basis spec.
1736 :     2. Added signatures and implementations of slices according to
1737 :     Basis spec.
1738 :     3. Edited source code throughout the system to make it compile again
1739 :     under 1. and 2. (In some cases code had to be added to have it
1740 :     match the new signatures.)
1741 :     4. MLRISC should be backward-compatible: the copies of the originals
1742 :     of files that needed to change under 3. were retained, the .cm files
1743 :     check the compiler version number and use old versions when
1744 :     appropriate.
1745 :     5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
1746 :     dirstream -> string option (in accordance with Basis spec).
1747 :     6. When generating code that counts lines, ml-lex used function
1748 :     CharVector.foldli, taking advantage of its old interface.
1749 :     This has been replaced with the corresponding code from
1750 :     CharVectorSlice. (html-lex must be re-lexed!)
1751 :     7. BitArray in smlnj-lib/Util has been extended/modified to match the
1752 :     new MONO_ARRAY signature. (Do we need BitArraySlice?)
1753 :     8. Removed temporary additions (fromInternal, toInternal) from the
1754 :     (now obsolete) IntInf in smlnj-lib/Util.
1755 :     9. Cleaned up structure Byte.
1756 :     10. Added localOffset, scan, and fromString to Date (according to spec).
1757 :     Cleaned/corrected implementation of Date.
1758 :     (Still need to check for correctness; implement better canonicalizeDate.)
1759 :     11. Added "scan" to signature IEEE_REAL.
1760 :     12. Some improvements to IntInf [in particular: efficiency-hack for
1761 :     mod and rem when second operand is 2 (for parity checks).]
1762 :     13. Changed representation of type Time.time, using a single IntInf.int
1763 :     value counting microseconds. This considerably simplified the
1764 :     implementation of structure Time. We now support negative time
1765 :     values; scan and fromString handle signs.
1766 :     14. Functor PrimIO now takes two additional arguments (VectorSlice and
1767 :     ArraySlice).
1768 :    
1769 :     ----------------------------------------------------------------------
1770 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1771 : mblume 1347 Date: 2003/08/28 17:00:00 CDT
1772 :     Tag: blume-20030828-intinf
1773 :     Description:
1774 :    
1775 :     This is a major update which comes with a version number bump
1776 :     (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
1777 :     and an implementation of IntInf in the Basis.
1778 :    
1779 :     There are a fairly large number of related changes and updates throughout
1780 :     the system:
1781 :    
1782 :     Basis:
1783 :     - Implemented IntInf.
1784 :     - Made LargeInt a projection of IntInf (by filtering through INTEGER).
1785 : mblume 1348 - Added some missing Real64 operations, most notably Real.toLargeInt.
1786 : mblume 1347 - Added FixedInt as a synonym for Int32.
1787 :    
1788 :     compiler:
1789 :     * Added support for a built-in intinf type.
1790 :     - literals
1791 :     - pattern matching
1792 :     - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
1793 :     - overloading on literals and operations
1794 :    
1795 :     This required adding a primitive type intinf, some additional
1796 :     primops, and implementations for several non-trivial intinf
1797 :     operations in Core. (The intinf type is completely abstract
1798 :     to the compiler; all operations get delegated back to the Core.)
1799 :    
1800 :     * Intinf equality is handled by polyequal. However, the compiler
1801 :     does not print its usual warning in this case (since polyequal
1802 :     is the right thing to do there).
1803 :    
1804 :     * Improved the organization of structure InlineT.
1805 :    
1806 :     * A word about conversion primops:
1807 :     If conversions involving intinf do not cancel out during
1808 : mblume 1348 CPS contract, then the compiler must insert calls to Core functions.
1809 : mblume 1347 Since all core access must be resolved already during the FLINT
1810 :     translate phase, it would be too late a the time of CPS contract
1811 : mblume 1348 to add new Core calls. For this reason, conversion primops
1812 : mblume 1347 for intinf carry two arguments: 1. the numeric argument that
1813 :     they are supposed to convert, and 2. the Core function that
1814 :     can help with this conversion if necessary. If CPS contract
1815 : mblume 1348 eliminates a primop, then the associated Core function becomes
1816 :     dead and goes away. Intinf conversion primops that do not get
1817 :     eliminated by CPS contract get rewritten into calls of their
1818 :     core functions by a separate, new phase.
1819 : mblume 1347
1820 :     interactive system:
1821 :     - Control.Print.intinfDepth controls max length of intinf constants
1822 :     being printed. (Analogous to Control.Print.stringDepth.)
1823 :     - Cleanup in printutil and pputil: got rid of unused stuff and
1824 :     duplicates; replaced some of the code with code that makes better
1825 :     use of library functionality.
1826 :    
1827 :     CM:
1828 :     Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
1829 :     are no longer silent.
1830 :    
1831 :     CKIT:
1832 :     Fixed mismatched uses of Int32 and LargeInt. I always decided
1833 :     in favor of LargeInt -- which is now the same as IntInf.
1834 :     CKIT-knowledgable people should check whether this is what's
1835 :     intended and otherwise change things back to using Int32 or
1836 :     FixedInt.
1837 :    
1838 :     Throughout the code:
1839 : mblume 1348 Started using IntInf.int literals and built-in operations
1840 : mblume 1347 (e.g., comparison with 0) where this seems appropriate.
1841 :    
1842 :    
1843 :     ----------------------------------------------------------------------
1844 : macqueen 1343 Name: Dave MacQueen (dbm@cs.uchicago.edu)
1845 :     Date: 2003/08/13 11:36:00 CDT
1846 :     Tag: dbm-20030813-mcz-merge1
1847 :     Description:
1848 :    
1849 :     Merging changes from the mcz-branch development branch into trunk.
1850 :     These changes involve replacement of the emulated old prettyprinter
1851 :     interface with direct use of the SML/NJ Lib PP library, and fixing
1852 :     of a couple of bugs (895, 1186) relating to error messages. A new
1853 :     prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
1854 :     has been added.
1855 :    
1856 :     ----------------------------------------------------------------------
1857 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1858 : mblume 1342 Date: 2003/08/11 15:45:00 CDT
1859 :     Tag: blume-20030811-windows
1860 :     Description:
1861 :    
1862 :     Version number bumped to 110.42.9. NEW BOOTFILES!!!
1863 :    
1864 :     http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
1865 :    
1866 :     This patch restores SML/NJ's ability to run under win32. There are a
1867 :     number of changes, including fixes for several bugs that had gone
1868 :     unnoticed until now:
1869 :    
1870 :     - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
1871 :     trying to run the win32 version from within cygwin.)
1872 :    
1873 :     - There are a number of simple .bat scripts that substitute for their
1874 :     corresponding Unix shell-scripts. (See below.)
1875 :    
1876 :     - The internals of ml-build have been modified slightly. The main
1877 :     difference is that instead of calling ".link-sml" (or link-sml.bat)
1878 :     using OS.Process.system, the ML process delegates this task back
1879 :     to the script. Otherwise problems arise in mixed environments such
1880 :     as Cygwin where scripts look and work like Unix scripts, but
1881 :     where OS.Process.system cannot run them.
1882 :    
1883 :     - In CM, the srcpath pickler used native pathname syntax -- which
1884 :     is incorrect in the case of cross-compilation. The new pickle format
1885 :     is independent of platform-specific naming conventions.
1886 :    
1887 :     - Path configuration files (such as lib/pathconfig) can now choose
1888 :     between native and standard syntax. Placing a line of the form
1889 :    
1890 :     standard!
1891 :    
1892 :     into the file causes all subsequent paths to be interpreted using
1893 :     CM standard pathname syntax (= Unix conventions); a line
1894 :    
1895 :     native!
1896 :    
1897 :     switches back to native style. This was needed so that
1898 :     path config files can be written portably, see src/system/pathconfig.
1899 :    
1900 :     - Runtime system:
1901 :    
1902 :     - win32-filesys.c: get_file_time and set_file_time now
1903 :     access modification time, not creation time.
1904 :    
1905 :     - I/O code made aware of new array representation.
1906 :    
1907 :     - Bug fixes in X86.prim.masm.
1908 :    
1909 :     - src/system/makeml made aware of win32. (For use under cygwin
1910 :     and other Unix-environments for windows.)
1911 :    
1912 :     - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
1913 :     which caused BinIO.inputAll to fail consistently.
1914 :    
1915 :     .bat scripts:
1916 :    
1917 :     Windows .bat scripts assume that SMLNJ_HOME is defined.
1918 :    
1919 :     - sml.bat, ml-yacc.bat, ml-lex.bat: Driver scripts for standalone
1920 :     applications (sml, ml-yacc, ml-lex).
1921 :     - ml-build.bat: analogous to ml-build.
1922 :     - config\install.bat: Analogous to config/install.sh. This requires
1923 :     that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
1924 :     (nmake etc. must be on the path, and vcvars32 must have been run.)
1925 :     Moreover, sources for ml-lex and ml-yacc need to exist under src,
1926 :     and the bootfile hierarchy must have been unpacked under
1927 :     sml.boot.x86-win32.
1928 :     The script is very primitive and does a poor job at error checking.
1929 :     It only installs the base system, ml-lex, and ml-yacc. No other
1930 :     libraries are being installed (i.e., you get only those that
1931 :     are part of the compiler.)
1932 :     - link-sml.bat: analogous to .link-sml, but not currently used
1933 :    
1934 :     Unrelated bug fixes:
1935 :    
1936 :     - ml-nlffigen now exports structures ST_* corresponding to incomplete
1937 :     types.
1938 :     - Added getDevice to PP/src/pp-debug-fn.sml. (Would not compile
1939 :     otherwise.)
1940 :    
1941 :     ----------------------------------------------------------------------
1942 : macqueen 1337 Name: Dave MacQueen (macqueen@cs.uchicago.edu)
1943 :     Date: 2003/06/17
1944 :     Tag: macqueen-20030617-bug895
1945 :     Description:
1946 :    
1947 :     Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
1948 :     Tag will be used for new development branch (mcz-branch) for
1949 :     use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
1950 :    
1951 :     ----------------------------------------------------------------------
1952 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1953 : mblume 1335 Date: 2003/05/27 16:55:00 CDT
1954 :     Tag: blume-20030527-polyeq
1955 :     Description:
1956 :    
1957 :     Tried to eliminated most cases of polymorphic equality.
1958 :    
1959 :     ----------------------------------------------------------------------
1960 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1961 : mblume 1334 Date: 2003/05/21 17:45:00 CDT
1962 :     Tag: blume-20030517-complete
1963 :     Description:
1964 :    
1965 :     Two changes:
1966 :    
1967 :     1. Added a flag for controlling whether non-exhaustive bindings will
1968 :     be treated as errors (default is false).
1969 :     2. Cleaned up the *entire* source tree so that CMB.make goes through
1970 :     without a single non-exhaustive match- or bind warning.
1971 :    
1972 :     ----------------------------------------------------------------------
1973 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1974 : mblume 1332 Date: 2003/05/17 10:20:00 CDT
1975 :     Tag: blume-20030517-absyn
1976 :     Description:
1977 :    
1978 :     1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
1979 :    
1980 :     This mainly affects the quality of error messages. However, some
1981 :     of the code is now more straightforward than before. (Treatment of
1982 :     the above four constructs in translate.sml is much simpler than
1983 :     the "macro-expansion" that was going on before. Plus, the mach-
1984 :     compiler no longer gets invoked just to be able to compile an
1985 :     if-expression.)
1986 :    
1987 :     2. The ErrorMsg.Error exception is now caught and absorbed by the
1988 :     interactive loop.
1989 :    
1990 :     ----------------------------------------------------------------------
1991 : allenleung 1327 Name: Allen Leung
1992 :     Date: 2003/05/16 13:05:00 CDT
1993 :     Tag: leunga-20030516-cygwin-runtime
1994 :     Description:
1995 :    
1996 :     Ported the runtime system to cygwin, which uses the unix
1997 :     x86-unix bin files. Missing/buggy features:
1998 :    
1999 :     o getnetbyname, getnetbyaddr: these functions seem to be missing in
2000 :     the Cygwin library.
2001 :     o Ctrl-C handling may be flaky.
2002 :     o Windows system calls and Windows I/O are not supported.
2003 :    
2004 :     A new set of binfiles is located at:
2005 :    
2006 :     http://www.dorsai.org/~leunga/boot.x86-unix.tgz
2007 :    
2008 :     This is only needed for bootstrapping the cygwin version of smlnj.
2009 :     Other x86 versions can use the existing binfiles.
2010 :    
2011 :     ----------------------------------------------------------------------
2012 : mblume 1317 Name: Matthias Blume
2013 :     Date: 2003/04/08 15:42:00 CDT
2014 :     Tag: blume-20030408-listpair
2015 :     Description:
2016 :    
2017 :     1. Added a target 'mlrisc' to installer.
2018 :    
2019 :     2. Added missing elements to structure ListPair.
2020 :    
2021 :     ----------------------------------------------------------------------
2022 : leunga 1296 Name: Allen Leung
2023 :     Date: 2003/01/07 10:40:00 EST
2024 :     Tag: leunga-20030107-int-rem
2025 :     Description:
2026 :    
2027 :     Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
2028 :     The arguments to the SUBL instruction were swapped.
2029 :    
2030 :     ----------------------------------------------------------------------
2031 : blume 1229 Name: Matthias Blume
2032 : blume 1294 Date: 2002/12/12 16:25:00 EST
2033 :     Tag: blume-20021212-risc-ra
2034 :     Description:
2035 :    
2036 :     Fixed a serious bug in the rewrite code for FP spilling/reloading that
2037 :     sent the RA into an infinite loop when floating point registers get
2038 :     spilled. (Because of this bug, e.g., nucleic stopped compiling between
2039 :     110.37 and 110.38.)
2040 :     There was another set of potential problems related to the handling of
2041 :     MLRISC annotations (but those did not yet cause real problems, apparently).
2042 :    
2043 :     ----------------------------------------------------------------------
2044 :     Name: Matthias Blume
2045 : blume 1291 Date: 2002/12/06 22:40:00 EST
2046 :     Tag: blume-20021206-cm-fileid
2047 :     Description:
2048 :    
2049 :     Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
2050 :     This fixes the problem of CM getting confused by files that suddenly
2051 :     change their identity (e.g., by getting unlinked and recreated by some
2052 :     text editor such as vi). There might be a better/cheaper/cleaner way
2053 :     of doing this, but for now this will have to do.
2054 :    
2055 :     ----------------------------------------------------------------------
2056 :     Name: Matthias Blume
2057 : blume 1288 Date: 2002/10/28 09:50:00 EST
2058 :     Tag: blume-20021028-typecheck
2059 :     Description:
2060 :    
2061 :     Exported structure Typecheck from $smlnj/viscomp/core.cm.
2062 :    
2063 :     ----------------------------------------------------------------------
2064 :     Name: Matthias Blume
2065 : blume 1282 Date: 2002/10/17 09:10:00 EDT
2066 : blume 1279 Tag: Release_110_42
2067 :     Description:
2068 :    
2069 : blume 1282 In good old tradition, there has been a slight hiccup so that we have
2070 :     to patch 110.42 after the fact. The old release tag has been replaced
2071 :     (see below).
2072 :    
2073 :     The change solves a problem with two competing approaches the
2074 :     configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
2075 :     each other's way.
2076 :    
2077 :     This change only affects the runtime system code and the installer script.
2078 :     (No new bootfiles.)
2079 :    
2080 :     ----------------------------------------------------------------------
2081 :     Name: Matthias Blume
2082 :     Date: 2002/10/16 12:00:00 EDT
2083 :     Tag: Release_110_42_removed
2084 :     Description:
2085 :    
2086 : blume 1279 New working release. New bootfiles.
2087 :    
2088 :     ----------------------------------------------------------------------
2089 :     Name: Matthias Blume
2090 : blume 1273 Date: 2002/10/10 13:10:00 EDT
2091 :     Tag: blume-20021010-ppc-divs
2092 :     Description:
2093 :    
2094 :     The mltree operator DIVS must be implemented with an overflow check on
2095 :     the PPC because the hardware indicates divide-by-zero using "overflow" as
2096 :     well.
2097 :    
2098 :     ----------------------------------------------------------------------
2099 :     Name: Matthias Blume
2100 : blume 1261 Date: 2002/07/23 11:45:00
2101 :     Tag: blume-20020723-smlnj-home
2102 :     Description:
2103 :    
2104 :     Sml now senses the SMLNJ_HOME environment variable. If this is set,
2105 :     then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
2106 :     CM_PATHCONFIG is also set), the path configuration file is assumed
2107 :     to be in $SMLNJ_HOME/lib/pathconfig. This way one can easily move
2108 :     the entire tree to some other place and everything will "just work".
2109 :    
2110 :     (Companion commands such as ml-build and ml-makedepend also sense this
2111 :     variable.)
2112 :    
2113 :     ----------------------------------------------------------------------
2114 :     Name: Matthias Blume
2115 : blume 1259 Date: 2002/07/12 21:19:00 EDT
2116 :     Tag: blume-20020712-liveness
2117 :     Description:
2118 :    
2119 :     Exported two useful "step" functions from liveness module (MLRISC).
2120 :    
2121 :     ----------------------------------------------------------------------
2122 :     Name: Matthias Blume
2123 : blume 1253 Date: 2002/07/05 16:00 EDT
2124 :     Tag: Release_110_41
2125 :     Description:
2126 :    
2127 :     New working release. New bootfiles.
2128 :    
2129 :     ----------------------------------------------------------------------
2130 :     Name: Matthias Blume
2131 : blume 1250 Date: 2002/07/05 10:25:00 EDT
2132 :     Tag: blume-20020705-btimp
2133 :     Description:
2134 :    
2135 :     Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
2136 :     other clients can set up backtracing support.
2137 :    
2138 :     ----------------------------------------------------------------------
2139 :     Name: Matthias Blume
2140 : blume 1249 Date: 2002/06/25 17:23:00 EDT
2141 :     Tag: blume-20020625-fpmax
2142 :     Description:
2143 :    
2144 :     Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
2145 :     case. (The sense of the isNaN test was reversed -- which made min and
2146 :     max always return their first argument.)
2147 :    
2148 :     ----------------------------------------------------------------------
2149 :     Name: Matthias Blume
2150 : blume 1240 Date: 2002/06/11
2151 :     Tag: blume-20020611-unixpath
2152 :     Description:
2153 :    
2154 :     Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
2155 :    
2156 :     ----------------------------------------------------------------------
2157 :     Name: Matthias Blume
2158 : blume 1238 Date: 2002/06/10 16:35:00 EDT
2159 :     Tag: blume-20020610-ieeereal
2160 :     Description:
2161 :    
2162 :     I back-ported my implementation of IEEEReal.fromString from the
2163 :     idlbasis-devel branch so that we can test it.
2164 :    
2165 :     Another small change is that ppDec tries to give more information
2166 :     than just "<sig>" in the case of functors. However, this code is
2167 :     broken in some mysterious way if the functor's body's signature
2168 :     has not been declared by ascription but gets inferred from the
2169 :     implementation. This needs fixing...
2170 :    
2171 :     ----------------------------------------------------------------------
2172 :     Name: Matthias Blume
2173 : blume 1229 Date: 2002/05/31
2174 :     Tag: blume-20020531-btrace-mode
2175 :     Description:
2176 :    
2177 :     Resurrected SMLofNJ.Internals.BTrace.mode. (It accidentally fell by
2178 :     the wayside when I switched over to using Controls everywhere.)
2179 :    
2180 :     ----------------------------------------------------------------------
2181 : george 1222 Name: Lal George
2182 :     Date: 2002/05/23 12:21:40 EDT
2183 :     Tag: george-20020523-visual-labels
2184 :     Description:
2185 :    
2186 :     Labels are now displayed in the graphical output to make
2187 :     the fall-through and target blocks obvious.
2188 :    
2189 :     ----------------------------------------------------------------------
2190 : blume 1204 Name: Matthias Blume
2191 : blume 1220 Date: 2002/05/22 11:03:00 EDT
2192 :     Tag: blume-20020522-shrink
2193 :     Description:
2194 :    
2195 :     John tweaked yesterday's fix for 1131 to handle an out-of-memory
2196 :     situation that comes up when allocating huge arrays.
2197 :    
2198 :     ----------------------------------------------------------------------
2199 :     Name: Matthias Blume
2200 : blume 1215 Date: 2002/05/21 16:00:00 EDT
2201 :     Tag: Release_110_40
2202 :     Description:
2203 :    
2204 :     New working release (110.40). New bootfiles.
2205 :    
2206 :     [Also: John Reppy fixed GC bug 1131.]
2207 :    
2208 :     ----------------------------------------------------------------------
2209 :     Name: Matthias Blume
2210 : blume 1212 Date: 2002/05/21 12:35:00 EDT
2211 :     Tag: blume-20020521-cmdoc
2212 :     Description:
2213 :    
2214 :     CM documentation update.
2215 :    
2216 :     ----------------------------------------------------------------------
2217 :     Name: Matthias Blume
2218 : blume 1211 Date: 2002/05/21 10:55:00 EDT
2219 :     Tag: blume-20020521-misc
2220 :     Description:
2221 :    
2222 :     - John tweaked runtime to be silent on heap export (except when
2223 :     GC messages are on).
2224 :     - I added a few more things (cross-compiling versions of CMB) to
2225 :     config/preloads (as suggestions).
2226 :    
2227 :     ----------------------------------------------------------------------
2228 :     Name: Matthias Blume
2229 : blume 1208 Date: 2002/05/20 22:25:00 EDT
2230 :     Tag: blume-20020520-controls
2231 :     Description:
2232 :    
2233 :     - Added ControlUtil structure to control-lib.cm.
2234 :     - Use it throughout.
2235 :     - Used Controls facility to define MLRISC controls (as opposed to
2236 :     registering MLRISC control ref cells with Controls after the fact)
2237 :     - Fixed messed-up controls priorities.
2238 :    
2239 :     * Removed again all the stuff from config/preloads that one wouldn't
2240 :     be able to preload at the time the initial heap image is built.
2241 :     (Many libraries, e.g., CML, do not exist yet at this time. The
2242 :     only libraries that can be preloaded via config/preloads are those
2243 :     that come bundled with the bootfiles.)
2244 :    
2245 :     ----------------------------------------------------------------------
2246 :     Name: Matthias Blume
2247 : blume 1204 Date: 2002/05/20 10:59:00 EDT
2248 :     Tag: blume-20020520-preloads
2249 :     Description:
2250 :    
2251 :     Added a lot of commented-out suggestions for things to be included
2252 :     in config/preloads.
2253 :    
2254 :     ----------------------------------------------------------------------
2255 : leunga 1203 Name: Allen Leung
2256 :     Date: 2002/05/18 14:20:00 EDT
2257 :     Tag: leunga-20020518-mdl
2258 :     Description:
2259 :    
2260 :     o Made the mdl tool stuff compile and run again.
2261 :     o I've disabled all the stuff that depends on RTL specifications; they
2262 :     are all badly broken anyway.
2263 :    
2264 :     ----------------------------------------------------------------------
2265 : blume 1201 Name: Matthias Blume
2266 :     Date: 2002/05/17 16:49:00 EDT
2267 :     Tag: blume-20020517-controls
2268 :     Description:
2269 :    
2270 :     0. John Reppy made several modifications to the SML/NJ library.
2271 :     In particular, there is a shiny new controls-lib.cm.
2272 :    
2273 :     1. Pushed new controls interface through compiler so that everything
2274 :     compiles again.
2275 :    
2276 :     2. Added FormatComb and FORMAT_COMB to the CML version of the
2277 :     SML/NJ library (so that CML compiles again).
2278 :    
2279 :     3. Modified init scripts because XXX_DEFAULT environment variables
2280 :     are no longer with us. (Boot-time initialization is now done
2281 :     using the same environment variables that are also used for
2282 :     startup-time initialization of controls.)
2283 :    
2284 :     ----------------------------------------------------------------------
2285 : george 1192 Name: Lal George
2286 :     Date: 2002/05/15 09:20:10 EDT
2287 :     Tag: george-20020515-pseudo-op-decls
2288 :     Description:
2289 :    
2290 :     All pseudo-ops emitted before the first segment declaration
2291 :     such as TEXT, DATA, and BSS directives are assumed to be global
2292 :     declarations and are emitted first in the assembly file. This is
2293 :     useful in a number of situations where one has pseudo-ops that are not
2294 :     specific to any segment, and also works around the constraint that one
2295 :     cannot have client pseudo-ops in the TEXT segment.
2296 :    
2297 :     Because no segment is associated with these declarations it is
2298 :     an error to allocate any space or objects before the first segment
2299 :     directive and an exception will be raised. However, we cannot make
2300 :     this check for client pseudo-ops.
2301 :    
2302 :     These top level declarations are a field in the CFG graph_info.
2303 :     In theory you can continue to add to this field after the CFG has been
2304 :     built -- provided you know what you are doing;-)
2305 :    
2306 :     ----------------------------------------------------------------------
2307 : blume 1175 Name: Matthias Blume
2308 : blume 1190 Date: 2002/05/13 16:40:00 EDT
2309 :     Tag: blume-20020513-pp-etc
2310 :     Description:
2311 :    
2312 :     A few minor bugfixes:
2313 :    
2314 :     - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
2315 :     (Bogus printouts for redefined bindings still occur. Compiler
2316 :     bug should no longer occur now. We need to redo the prettyprinter
2317 :     from scratch.)
2318 :    
2319 :     - CM pathname printer now also adds escape sequences for ( and )
2320 :    
2321 :     - commend and docu fixes for ml-nlffi
2322 :    
2323 :     ----------------------------------------------------------------------
2324 :     Name: Matthias Blume
2325 : blume 1189 Date: 2002/05/10 16:40:00 EDT
2326 :     Tag: blume-20020510-erg-textio
2327 :     Description:
2328 :    
2329 :     Applied the following bugfix provided by Emden Gansner:
2330 :    
2331 :     Output is corrupted when outputSubstr is used rather than output.
2332 :    
2333 :     The problem occurs when a substring
2334 :    
2335 :     ss = (s, dataStart, dataLen)
2336 :    
2337 :     where dataStart > 0, fills a stream buffer with avail bytes left.
2338 :     avail bytes of s, starting at index dataStart, are copied into the
2339 :     buffer, the buffer is flushed, and then the remaining dataLen-avail
2340 :     bytes of ss are copied into the beginning of the buffer. Instead of
2341 :     starting this copy at index dataStart+avail in s, the current code
2342 :     starts the copy at index avail.
2343 :    
2344 :     Fix:
2345 :     In text-io-fn.sml, change line 695 from
2346 :     val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
2347 :     to
2348 :     val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
2349 :    
2350 :     ----------------------------------------------------------------------
2351 :     Name: Matthias Blume
2352 : blume 1186 Date: 2002/04/12 13:55:00 EDT
2353 :     Tag: blume-20020412-assyntax
2354 :     Description:
2355 :    
2356 :     1. Grabbed newer assyntax.h from the XFree86 project.
2357 :     2. Fiddled with how to compile X86.prim.asm without warnings.
2358 :     3. (Very) Minor cleanup in CM.
2359 :    
2360 :     ----------------------------------------------------------------------
2361 :     Name: Matthias Blume
2362 : blume 1185 Date: 2002/04/01 (no joke!) 17:07:00 EST
2363 :     Tag: blume-20020401-x86div
2364 :     Description:
2365 :    
2366 :     Added full support for div/mod/rem/quot on the x86, using the machine
2367 :     instruction's two results (without clumsily recomputing the remainder)
2368 :     directly where appropriate.
2369 :    
2370 :     Some more extensive power-of-two support was added to the x86 instruction
2371 :     selector (avoiding expensive divs, mods, and muls where they can be
2372 :     replaced with cheaper shifts and masks). However, this sort of thing
2373 :     ought to be done earlier, e.g., within the CPS optimizer so that
2374 :     all architectures benefit from it.
2375 :    
2376 :     The compiler compiles to a fixed point, but changes might be somewhat
2377 :     fragile nevertheless. Please, report any strange things that you might
2378 :     see wrt. div/mod/quot/rem...
2379 :    
2380 :     ----------------------------------------------------------------------
2381 :     Name: Matthias Blume
2382 : blume 1184 Date: 2002/03/29 17:22:00
2383 :     Tag: blume-20020329-div
2384 :     Description:
2385 :    
2386 :     Fixed my broken div/mod logic. Unfortunately, this means that the
2387 :     inline code for div/mod now has one more comparison than before.
2388 :     Fast paths (quotient > 0 or remainder = 0) are not affected, though.
2389 :     The problem was with quotient = 0, because that alone does not tell
2390 :     us which way the rounding went. One then has to look at whether
2391 :     remainder and divisor have the same sign... :(
2392 :    
2393 :     Anyway, I replaced the bootfiles with fresh ones...
2394 :    
2395 :     ----------------------------------------------------------------------
2396 :     Name: Matthias Blume
2397 : blume 1183 Date: 2002/03/29 14:10:00 EST
2398 :     Tag: blume-20020329-inlprims
2399 :     Description:
2400 :    
2401 :     NEW BOOTFILES!!! Version number bumped to 110.39.3.
2402 :    
2403 :     Primops have changed. This means that the bin/boot-file formats have
2404 :     changed as well.
2405 :    
2406 :     To make sure that there is no confusion, I made a new version.
2407 :    
2408 :    
2409 :     CHANGES:
2410 :    
2411 :     * removed REMT from mltree (remainder should never overflow).
2412 :    
2413 :     * added primops to deal with divisions of all flavors to the frontend
2414 :    
2415 :     * handled these primops all the way through so they map to their respective
2416 :     MLRISC support
2417 :    
2418 :     * used these primops in the implementation of Int, Int32, Word, Word32
2419 :    
2420 :     * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
2421 :    
2422 :     * parameterized INLMIN, INLMAX, and INLABS by a numkind
2423 :    
2424 :     * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
2425 :     floating point
2426 :    
2427 :     * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
2428 :     and Real (but Real.abs maps to a separate floating-point-only primop)
2429 :    
2430 :    
2431 :     TODO items:
2432 :    
2433 :     * Hacked Alpha32 instruction selection, disabling the selection of REMx
2434 :     instructions because the machine instruction encoder cannot handle
2435 :     them. (Hppa, PPC, and Sparc instruction selection did not handle
2436 :     REM in the first place, and REM is supported by the x86 machine coder.)
2437 :    
2438 :     * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
2439 :     selection phase. (The two can be streamlined because the hardware
2440 :     delivers both quotient and remainder at the same time anyway.)
2441 :    
2442 :     * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
2443 :     (Currently the behavior is inconsistent both across architectures and
2444 :     wrt. the draft Basis spec.)
2445 :    
2446 :     * Word8 should eventually be handled natively, too.
2447 :    
2448 :     * There seems to be one serious bug in mltree-gen.sml. It appears, though,
2449 :     as if there currently is no execution path that could trigger it in
2450 :     SML/NJ. (The assumptions underlying functions arith and promotable do not
2451 :     hold for things like multiplication and division.)
2452 :    
2453 :     ----------------------------------------------------------------------
2454 :     Name: Matthias Blume
2455 : blume 1181 Date: 2002/03/27 16:27:00 EST
2456 :     Tag: blume-20020327-mlrisc-divisions
2457 :     Description:
2458 :    
2459 :     Added support for all four division operations (ML's div, mod, quot,
2460 :     and rem) to MLRISC. In the course of doing so, I also rationalized
2461 :     the naming (no more annoying switch-around of DIV and QUOT), by
2462 :     parameterizing the operation by div_rounding_mode (which can be either
2463 :     DIV_TO_ZERO or DIV_TO_NEGINF).
2464 :    
2465 :     The generic MLTreeGen functor takes care of compiling all four
2466 :     operations down to only round-to-zero div.
2467 :    
2468 :     Missing pieces:
2469 :    
2470 :     * Doing something smarter than relying on MLTreeGen on architectures
2471 :     like, e.g., the x86 where hardware division delivers both quotient and
2472 :     remainder at the same time. With this, the implementation of the
2473 :     round-to-neginf operations could be further streamlined.
2474 :    
2475 :     * Remove inlining support for div/mod/rem from the frontend and replace it
2476 :     with primops that get carried through to the backend. Do this for all
2477 :     int and word types.
2478 :    
2479 :     ----------------------------------------------------------------------
2480 :     Name: Matthias Blume
2481 : blume 1180 Date: 2002/03/25 17:25:00 EST
2482 :     Tag: blume-20020325-divmod
2483 :     Description:
2484 :    
2485 :     I improved (hopefully without breaking them) the implementation of Int.div,
2486 :     Int.mod, and Int.rem. For this, the code in translate.sml now takes
2487 :     advantage of the following observations:
2488 :    
2489 :     Let q = x quot y r = x rem y
2490 :     d = x div y m = x mod y
2491 :    
2492 :     where "quot" is the round-to-zero version of integer division that
2493 :     hardware usually provides. Then we have:
2494 :    
2495 :     r = x - q * y where neither the * nor the - will overflow
2496 :     d = if q >= 0 orelse x = q * y then q else q - 1
2497 :     where neither the * nor the - will overflow
2498 :     m = if q >= 0 orelse r = 0 then r else r + y
2499 :     where the + will not overflow
2500 :    
2501 :     This results in substantial simplification of the generated code.
2502 :     The following table shows the number of CFG nodes and edges generated
2503 :     for
2504 :     fun f (x, y) = x OPER y
2505 :     (* with OPER \in div, mod, quot, rem *)
2506 :    
2507 :    
2508 :     OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
2509 :     --------------------------------------------------------
2510 :     div | 24 | 39 | 12 | 16
2511 :     mod | 41 | 71 | 12 | 16
2512 :     quot | 8 | 10 | 8 | 10
2513 :     rem | 10 | 14 | 8 | 10
2514 :    
2515 :    
2516 :     ----------------------------------------------------------------------
2517 :     Name: Matthias Blume
2518 : blume 1179 Date: 2002/03/25 22:06:00 EST
2519 :     Tag: blume-20020325-cprotobug
2520 :     Description:
2521 :    
2522 :     Fixed a bug in cproto (c prototype decoder).
2523 :    
2524 :     ----------------------------------------------------------------------
2525 :     Name: Matthias Blume
2526 : blume 1178 Date: 2002/03/25 16:00:00 EST
2527 :     Tag: blume-20020325-raw-primops
2528 :     Description:
2529 :    
2530 :     I did some cleanup to Allen's new primop code and
2531 :     replaced yesterday's bootfiles with new ones.
2532 :     (But they are stored in the same place.)
2533 :    
2534 :     ----------------------------------------------------------------------
2535 :     Name: Matthias Blume
2536 : blume 1175 Date: 2002/03/24 22:40:00 EST
2537 :     Tag: blume-20020324-bootfiles
2538 :     Description:
2539 :    
2540 :     Made the bootfiles that Allen asked for.
2541 :    
2542 :     ----------------------------------------------------------------------
2543 : leunga 1174 Name: Allen Leung
2544 :     Date: 2002/03/23 15:50:00 EST
2545 :     Tag: leunga-20020323-flint-cps-rcc-primops
2546 :     Description:
2547 :    
2548 :     1. Changes to FLINT primops:
2549 :    
2550 :     (* make a call to a C-function;
2551 :     * The primop carries C function prototype information and specifies
2552 :     * which of its (ML-) arguments are floating point. C prototype
2553 :     * information is for use by the backend, ML information is for
2554 :     * use by the CPS converter. *)
2555 :     | RAW_CCALL of { c_proto: CTypes.c_proto,
2556 :     ml_args: ccall_type list,
2557 :     ml_res_opt: ccall_type option,
2558 :     reentrant : bool
2559 :     } option
2560 :     (* Allocate uninitialized storage on the heap.
2561 :     * The record is meant to hold short-lived C objects, i.e., they
2562 :     * are not ML pointers. With the tag, the representation is
2563 :     * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
2564 :     *)
2565 :     | RAW_RECORD of {tag:bool,sz:int}
2566 :     and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
2567 :    
2568 :     2. These CPS primops are now overloaded:
2569 :    
2570 :     rawload of {kind:numkind}
2571 :     rawstore of {kind:numkind}
2572 :    
2573 :     The one argument form is:
2574 :    
2575 :     rawload {kind} address
2576 :    
2577 :     The two argument form is:
2578 :    
2579 :     rawload {kind} [ml object, byte-offset]
2580 :    
2581 :     3. RAW_CCALL/RCC now takes two extra arguments:
2582 :    
2583 :     a. The first is whether the C call is reentrant, i.e., whether
2584 :     ML state should be saved and restored.
2585 :     b. The second argument is a string argument specifying the name of
2586 :     library and the C function.
2587 :    
2588 :     These things are currently not handled in the code generator, yet.
2589 :    
2590 :     4. In CProto,
2591 :    
2592 :     An encoding type of "bool" means "ml object" and is mapped into
2593 :     C prototype of PTR. Note that "bool" is different than "string",
2594 :     even though "string" is also mapped into PTR, because "bool"
2595 :     is assigned an CPS type of BOGt, while "string" is assigned INT32t.
2596 :    
2597 :     5. Pickler/unpicker
2598 :    
2599 :     Changed to handle RAW_RECORD and newest RAW_CCALL
2600 :    
2601 :     6. MLRiscGen,
2602 :    
2603 :     1. Changed to handle the new rawload/rawstore/rawrecord operators.
2604 :     2. Code for handling C Calls has been moved to a new module CPSCCalls,
2605 :     in the file CodeGen/cpscompile/cps-c-calls.sml
2606 :    
2607 :     7. Added the conditional move operator
2608 :    
2609 :     condmove of branch
2610 :    
2611 :     to cps. Generation of this is still buggy so it is currently
2612 :     disabled.
2613 :    
2614 :     ----------------------------------------------------------------------
2615 : george 1168 Name: Lal George
2616 :     Date: 2002/03/22 14:18:25 EST
2617 : george 1171 Tag: george-20020322-cps-branch-prob
2618 : george 1168 Description:
2619 :    
2620 : george 1171 Implemented the Ball-Larus branch prediction-heuristics, and
2621 : george 1168 incorporated graphical viewers for control flow graphs.
2622 :    
2623 : george 1171 Ball-Larus Heuristics:
2624 : george 1168 ---------------------
2625 :     See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
2626 :    
2627 :     By design it uses the Dempster-Shafer theory for combining
2628 :     probabilities. For example, in the function:
2629 :    
2630 :     fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
2631 :    
2632 :     the ball-larus heuristics predicts that the n=0 is unlikely
2633 :     (OH-heuristic), and the 'then' branch is unlikely because of the
2634 :     RH-heuristic -- giving the 'then' branch an even lower combined
2635 : george 1171 probability using the Dempster-Shafer theory.
2636 : george 1168
2637 :     Finally, John Reppy's loop analysis in MLRISC, further lowers the
2638 :     probability of the 'then' branch because of the loop in the else
2639 :     branch.
2640 :    
2641 :    
2642 :     Graphical Viewing:
2643 :     ------------------
2644 :     I merely plugged in Allen's graphical viewers into the compiler. The
2645 :     additional code is not much. At the top level, saying:
2646 :    
2647 :     Control.MLRISC.getFlag "cfg-graphical-view" := true;
2648 :    
2649 :     will display the graphical view of the control flow graph just before
2650 :     back-patching. daVinci must be in your path for this to work. If
2651 :     daVinci is not available, then the default viewer can be changed
2652 :     using:
2653 :    
2654 :     Control.MLRISC.getString "viewer"
2655 :    
2656 :     which can be set to "dot" or "vcg" for the corresponding viewers. Of
2657 :     course, these viewers must be in your path.
2658 :    
2659 :     The above will display the compilation unit at the level of clusters,
2660 :     many of which are small, boring, and un-interesting. Also setting:
2661 :    
2662 :     Control.MLRISC.getInt "cfg-graphical-view_size"
2663 :    
2664 :     will display clusters that are larger than the value set by the above.
2665 :    
2666 :    
2667 :     ----------------------------------------------------------------------
2668 : blume 1159 Name: Matthias Blume
2669 :     Date: 2002/03/21 22:20:00 EST
2670 :     Tag: blume-20020321-kmp-bugfix
2671 :     Description:
2672 :    
2673 :     Changed the interface to the KMP routine in PreString and fixed
2674 :     a minor bug in one place where it was used.
2675 :    
2676 :     ----------------------------------------------------------------------
2677 : leunga 1156 Name: Allen Leung
2678 : leunga 1158 Date: 2002/03/21 20:30:00 EST
2679 :     Tag: leunga-20020321-cfg
2680 :     Description:
2681 :    
2682 :     Fixed a potential problem in cfg edge splitting.
2683 :    
2684 :     ----------------------------------------------------------------------
2685 :     Name: Allen Leung
2686 : leunga 1156 Date: 2002/03/21 17:15:00 EST
2687 :     Tag: leunga-20020321-x86-fp-cfg
2688 :     Description:
2689 :    
2690 :     1. Recoded the buggy parts of x86-fp.
2691 :    
2692 :     a. All the block reordering code has been removed.
2693 :     We now depend on the block placement phases to do this work.
2694 :    
2695 :     b. Critical edge splitting code has been simplified and moved into the
2696 :     CFG modules, as where they belong.
2697 :    
2698 :     Both of these were quite buggy and complex. The code is now much, much
2699 :     simpler.
2700 :    
2701 :     2. X86 backend.
2702 :    
2703 :     a. Added instructions for 64-bit support. Instruction selection for
2704 :     64-bit has not been committed, however, since that
2705 :     requires changes to MLTREE which haven't been approved by
2706 :     Lal and John.
2707 :    
2708 :     b. Added support for FUCOMI and FUCOMIP when generating code for
2709 :     PentiumPro and above. We only generate these instructions in
2710 :     the fast-fp mode.
2711 :    
2712 :     c. Added cases for JP and JNP in X86FreqProps.
2713 :    
2714 :     3. CFG
2715 :    
2716 :     CFG now has a bunch of methods for edge splitting and merging.
2717 :    
2718 :     4. Machine description.
2719 :    
2720 :     John's simplification of MLTREE_BASIS.fcond broke a few machine
2721 :     description things:
2722 :    
2723 :     rtl-build.{sig,sml} and hppa.mdl fixed.
2724 :    
2725 :     NOTE: the machine description stuff in the repository is still broken.
2726 :     Again, I can't put my fixes in because that involves
2727 :     changes to MLTREE.
2728 :    
2729 :     ----------------------------------------------------------------------
2730 : blume 1145 Name: Matthias Blume
2731 : blume 1155 Date: 2002/03/20 15:55:00 EST
2732 :     Tag: blume-20020320-kmp
2733 :     Description:
2734 :    
2735 :     Implemented Knuth-Morris-Pratt string matching in PreString and used
2736 :     it for String.isSubstring, Substring.isSubstring, and
2737 :     Substring.position.
2738 :    
2739 :     (Might need some stress-testing. Simple examples worked fine.)
2740 :    
2741 :     ----------------------------------------------------------------------
2742 :     Name: Matthias Blume
2743 : blume 1152 Date: 2002/03/19 16:37:00 EST
2744 :     Tag: blume-20020319-witnesses
2745 :     Description:
2746 :    
2747 :     Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
2748 :    
2749 :     This implements a generic mechanism for changing constness qualifiers
2750 :     anywhere within big C types without resorting to outright "casts".
2751 :     (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
2752 :     modify the constness at the outermost level.)
2753 :     The implementation of "convert" is based on the idea of "witness"
2754 :     values -- values that are not used by the operation but whose types
2755 :     "testify" to their applicability. On the implementation side, "convert"
2756 :     is simply a projection (returning its second curried argument). With
2757 :     cross-module inlining, it should not result in any machine code being
2758 :     generated.
2759 :    
2760 :     ----------------------------------------------------------------------
2761 :     Name: Matthias Blume
2762 : blume 1148 Date: 2002/03/15 16:40:00 EST
2763 :     Tag: blume-20020315-basis
2764 :     Description:
2765 :    
2766 :     Provided (preliminary?) implementations for
2767 :    
2768 :     {String,Substring}.{concatWith,isSuffix,isSubstring}
2769 :    
2770 :     and
2771 :    
2772 :     Substring.full
2773 :    
2774 :     Those are in the Basis spec but they were missing in SML/NJ.
2775 :    
2776 :     ----------------------------------------------------------------------
2777 :     Name: Matthias Blume
2778 : blume 1145 Date: 2002/03/14 21:30:00 EST
2779 :     Tag: blume-20020314-controls
2780 :     Description:
2781 :    
2782 :     Controls:
2783 :     ---------
2784 :    
2785 :     1. Factored out the recently-added Controls : CONTROLS stuff and put
2786 :     it into its own library $/controls-lib.cm. The source tree for
2787 :     this is under src/smlnj-lib/Controls.
2788 :    
2789 :     2. Changed the names of types and functions in this interface, so they
2790 :     make a bit more "sense":
2791 :    
2792 :     module -> registry
2793 :     'a registry -> 'a group
2794 :    
2795 :     3. The interface now deals in ref cells only. The getter/setter interface
2796 :     is (mostly) gone.
2797 :    
2798 :     4. Added a function that lets one register an already-existing ref cell.
2799 :    
2800 :     5. Made the corresponding modifications to the rest of the code so that
2801 :     everything compiles again.
2802 :    
2803 :     6. Changed the implementation of Controls.MLRISC back to something closer
2804 :     to the original. In particular, this module (and therefore MLRISC)
2805 :     does not depend on Controls. There now is some link-time code in
2806 :     int-sys.sml that registers the MLRISC controls with the Controls
2807 :     module.
2808 :    
2809 :     CM:
2810 :     ---
2811 :    
2812 :     * One can now specify the lambda-split aggressiveness in init.cmi.
2813 :    
2814 :     ----------------------------------------------------------------------
2815 : leunga 1142 Name: Allen Leung
2816 :     Date: 2002/03/13 17:30:00 EST
2817 :     Tag: leunga-20020313-x86-fp-unary
2818 :     Description:
2819 :    
2820 :     Bug fix for:
2821 :    
2822 :     > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
2823 :     > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
2824 :     > - fun f(x,(y,z)) = Real.~ y;
2825 :     > [autoloading]
2826 :     > [autoloading done]
2827 :     > fchsl (%eax), 184(%esp)
2828 :     > Error: MLRisc bug: X86MCEmitter.emitInstr
2829 :     >
2830 :     > uncaught exception Error
2831 :     > raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
2832 :    
2833 :     The problem was that the code generator did not generate any fp registers
2834 :     in this case, and the ra didn't know that it needed to run the X86FP phase to
2835 :     translate the pseudo fp instruction. This only happened with unary fp
2836 :     operators in certain situations.
2837 :    
2838 :     ----------------------------------------------------------------------
2839 : blume 1137 Name: Matthias Blume
2840 : blume 1140 Date: 2002/03/13 14:00:00 EST
2841 :     Tag: blume-20020313-overload-etc
2842 :     Description:
2843 :    
2844 :     1. Added _overload as a synonym for overload for backward compatibility.
2845 :     (Control.overloadKW must be true for either version to be accepted.)
2846 :    
2847 :     2. Fixed bug in install script that caused more things to be installed
2848 :     than what was requested in config/targets.
2849 :    
2850 :     3. Made CM aware of the (_)overload construct so that autoloading
2851 :     works.
2852 :    
2853 :     ----------------------------------------------------------------------
2854 :     Name: Matthias Blume
2855 : blume 1138 Date: 2002/03/12 22:03:00 EST
2856 :     Tag: blume-20020312-url
2857 :     Description:
2858 :    
2859 :     Forgot to update BOOT and srcarchiveurl.
2860 :    
2861 :     ----------------------------------------------------------------------
2862 :     Name: Matthias Blume
2863 : blume 1137 Date: 2002/03/12 17:30:00 EST
2864 :     Tag: blume-20020312-version110392
2865 :     Description:
2866 :    
2867 :     Yet another version number bump (because of small changes to the
2868 :     binfile format). Version number is now 110.39.2. NEW BOOTFILES!
2869 :    
2870 :     Changes:
2871 :    
2872 :     The new pid generation scheme described a few weeks ago was overly
2873 :     complicated. I implemented a new mechanism that is simpler and
2874 :     provides a bit more "stability": Once CM has seen a compilation
2875 :     unit, it keeps its identity constant (as long as you do not delete
2876 :     those crucial CM/GUID/* files). This means that when you change
2877 : blume 1145 an interface, compile, then go back to the old interface, and
2878 : blume 1137 compile again, you arrive at the original pid.
2879 :    
2880 :     There now also is a mechanism that instructs CM to use the plain
2881 :     environment hash as a module's pid (effectively making its GUID
2882 :     the empty string). For this, "noguid" must be specified as an
2883 :     option to the .sml file in question within its .cm file.
2884 :     This is most useful for code that is being generated by tools such
2885 :     as ml-nlffigen (because during development programmers tend to
2886 :     erase the tool's entire output directory tree including CM's cached
2887 :     GUIDs). "noguid" is somewhat dangerous (since it can be used to locally
2888 :     revert to the old, broken behavior of SML/NJ, but in specific cases
2889 :     where there is no danger of interface confusion, its use is ok
2890 :     (I think).
2891 :    
2892 :     ml-nlffigen by default generates "noguid" annotations. They can be
2893 :     turned off by specifying -guid in its command line.
2894 :    
2895 :     ----------------------------------------------------------------------
2896 : george 1136 Name: Lal George
2897 :     Date: 2002/03/12 12 14:42:36 EST
2898 :     Tag: george-20020312-frequency-computation
2899 :     Description:
2900 :    
2901 :     Integrated jump chaining and static block frequency into the
2902 :     compiler. More details and numbers later.
2903 : leunga 1025
2904 : george 1003 ----------------------------------------------------------------------
2905 : george 1133 Name: Lal George
2906 :     Date: 2002/03/11 11 22:38:53 EST
2907 :     Tag: george-20020311-jump-chain-elim
2908 :     Description:
2909 :    
2910 :     Tested the jump chain elimination on all architectures (except the
2911 :     hppa). This is on by default right now and is profitable for the
2912 :     alpha and x86, however, it may not be profitable for the sparc and ppc
2913 :     when compiling the compiler.
2914 :    
2915 :     The gc test will typically jump to a label at the end of the cluster,
2916 :     where there is another jump to an external cluster containing the actual
2917 :     code to invoke gc. This is to allow factoring of common gc invocation
2918 :     sequences. That is to say, we generate:
2919 :    
2920 :     f:
2921 :     testgc
2922 :     ja L1 % jump if above to L1
2923 :    
2924 :     L1:
2925 :     jmp L2
2926 :    
2927 :    
2928 :     After jump chain elimination the 'ja L1' instructions is converted to
2929 :     'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end
2930 :     up being implemented in their long form (if L2 is far away) using:
2931 :    
2932 :     jbe L3 % jump if below or equal to L3
2933 :     jmp L2
2934 :     L3:
2935 :     ...
2936 :    
2937 :    
2938 :     For large compilation units L2 may be far away.
2939 :    
2940 :    
2941 :     ----------------------------------------------------------------------
2942 : blume 1132 Name: Matthias Blume
2943 :     Date: 2002/03/11 13:30:00 EST
2944 :     Tag: blume-20020311-mltreeeval
2945 :     Description:
2946 :    
2947 :     A functor parameter was missing.
2948 :    
2949 :     ----------------------------------------------------------------------
2950 : leunga 1130 Name: Allen Leung
2951 : leunga 1131 Date: 2002/03/11 10:30:00 EST
2952 : leunga 1142 Tag: leunga-20020311-runtime-string0
2953 : leunga 1131 Description:
2954 :    
2955 :     The representation of the empty string now points to a
2956 :     legal null terminated C string instead of unit. It is now possible
2957 :     to convert an ML string into C string with InlineT.CharVector.getData.
2958 :     This compiles into one single machine instruction.
2959 :    
2960 :     ----------------------------------------------------------------------
2961 :     Name: Allen Leung
2962 : leunga 1130 Date: 2002/03/10 23:55:00 EST
2963 :     Tag: leunga-20020310-x86-call
2964 :     Description:
2965 :    
2966 :     Added machine generation for CALL instruction (relative displacement mode)
2967 :    
2968 :     ----------------------------------------------------------------------
2969 : blume 1128 Name: Matthias Blume
2970 :     Date: 2002/03/08 16:05:00
2971 :     Tag: blume-20020308-entrypoints
2972 :     Description:
2973 :    
2974 :     Version number bumped to 110.39.1. NEW BOOTFILES!
2975 :    
2976 :     Entrypoints: non-zero offset into a code object where execution should begin.
2977 :    
2978 :     - Added the notion of an entrypoint to CodeObj.
2979 :     - Added reading/writing of entrypoint info to Binfile.
2980 :     - Made runtime system bootloader aware of entrypoints.
2981 :     - Use the address of the label of the first function given to mlriscGen
2982 :     as the entrypoint. This address is currently always 0, but it will
2983 :     not be 0 once we turn on block placement.
2984 :     - Removed the linkage cluster code (which was The Other Way(tm) of dealing
2985 :     with entry points) from mlriscGen.
2986 :    
2987 :     ----------------------------------------------------------------------
2988 : leunga 1127 Name: Allen Leung
2989 :     Date: 2002/03/07 20:45:00 EST
2990 :     Tag: leunga-20020307-x86-cmov
2991 :     Description:
2992 :    
2993 :     Bug fixes for CMOVcc on x86.
2994 :    
2995 :     1. Added machine code generation for CMOVcc
2996 :     2. CMOVcc is now generated in preference over SETcc on PentiumPro or above.
2997 :     3. CMOVcc cannot have an immediate operand as argument.
2998 :    
2999 :     ----------------------------------------------------------------------
3000 : blume 1126 Name: Matthias Blume
3001 :     Date: 2002/03/07 16:15:00 EST
3002 :     Tag: blume-20020307-controls
3003 :     Description:
3004 :    
3005 :     This is a very large but mostly boring patch which makes (almost)
3006 :     every tuneable compiler knob (i.e., pretty much everything under
3007 :     Control.* plus a few other things) configurable via both the command
3008 :     line and environment variables in the style CM did its configuration
3009 :     until now.
3010 :    
3011 :     Try starting sml with '-h' (or, if you are brave, '-H')
3012 :    
3013 :     To this end, I added a structure Controls : CONTROLS to smlnj-lib.cm which
3014 :     implements the underlying generic mechanism.
3015 :    
3016 :     The interface to some of the existing such facilities has changed somewhat.
3017 :     For example, the MLRiscControl module now provides mkFoo instead of getFoo.
3018 :     (The getFoo interface is still there for backward-compatibility, but its
3019 :     use is deprecated.)
3020 :    
3021 :     The ml-build script passes -Cxxx=yyy command-line arguments through so
3022 :     that one can now twiddle the compiler settings when using this "batch"
3023 :     compiler.
3024 :    
3025 :     TODO items:
3026 :    
3027 :     We should go through and throw out all controls that are no longer
3028 :     connected to anything. Moreover, we should go through and provide
3029 :     meaningful (and correct!) documentation strings for those controls
3030 :     that still are connected.
3031 :    
3032 :     Currently, multiple calls to Controls.new are accepted (only the first
3033 :     has any effect). Eventually we should make sure that every control
3034 :     is being made (via Controls.new) exactly once. Future access can then
3035 :     be done using Controls.acc.
3036 :    
3037 :     Finally, it would probably be a good idea to use the getter-setter
3038 :     interface to controls rather than ref cells. For the time being, both
3039 :     styles are provided by the Controls module, but getter-setter pairs are
3040 :     better if thread-safety is of any concern because they can be wrapped.
3041 :    
3042 :     *****************************************
3043 :    
3044 :     One bug fix: The function blockPlacement in three of the MLRISC
3045 :     backpatch files used to be hard-wired to one of two possibilities at
3046 :     link time (according to the value of the placementFlag). But (I
3047 :     think) it should rather sense the flag every time.
3048 :    
3049 :     *****************************************
3050 :    
3051 :     Other assorted changes (by other people who did not supply a HISTORY entry):
3052 :    
3053 :     1. the cross-module inliner now works much better (Monnier)
3054 :     2. representation of weights, frequencies, and probabilities in MLRISC
3055 :     changed in preparation of using those for weighted block placement
3056 :     (Reppy, George)
3057 :    
3058 :     ----------------------------------------------------------------------
3059 : george 1116 Name: Lal George
3060 : george 1124 Date: 2002/03/07 14:44:24 EST 2002
3061 :     Tag: george-20020307-weighted-block-placement
3062 :    
3063 :     Tested the weighted block placement optimization on all architectures
3064 :     (except the hppa) using AMPL to generate the block and edge frequencies.
3065 :     Changes were required in the machine properties to correctly
3066 :     categorize trap instructions. There is an MLRISC flag
3067 :     "weighted-block-placement" that can be used to enable weighted block
3068 :     placement, but this will be ineffective without block/edge
3069 :     frequencies (coming soon).
3070 :    
3071 :    
3072 :     ----------------------------------------------------------------------
3073 :     Name: Lal George
3074 : george 1116 Date: 2002/03/05 17:24:48 EST
3075 :     Tag: george-20020305-linkage-cluster
3076 :    
3077 : george 1124 In order to support the block placement optimization, a new cluster
3078 :     is generated as the very first cluster (called the linkage cluster).
3079 :     It contains a single jump to the 'real' entry point for the compilation
3080 :     unit. Block placement has no effect on the linkage cluster itself, but
3081 :     all the other clusters have full freedom in the manner in which they
3082 :     reorder blocks or functions.
3083 : george 1116
3084 :     On the x86 the typical linkage code that is generated is:
3085 :     ----------------------
3086 :     .align 2
3087 :     L0:
3088 :     addl $L1-L0, 72(%esp)
3089 : george 1124 jmp L1
3090 : george 1116
3091 :    
3092 :     .align 2
3093 :     L1:
3094 :     ----------------------
3095 :    
3096 :     72(%esp) is the memory location for the stdlink register. This
3097 :     must contain the address of the CPS function being called. In the
3098 : george 1124 above example, it contains the address of L0; before
3099 : george 1116 calling L1 (the real entry point for the compilation unit), it
3100 :     must contain the address for L1, and hence
3101 :    
3102 :     addl $L1-L0, 72(%esp)
3103 :    
3104 : george 1124 I have tested this on all architectures except the hppa.The increase
3105 :     in code size is of course negligible
3106 : george 1116
3107 :     ----------------------------------------------------------------------
3108 : leunga 1115 Name: Allen Leung
3109 :     Date: 2002/03/03 13:20:00 EST
3110 :     Tag: leunga-20020303-mlrisc-tools
3111 :    
3112 :     Added #[ ... ] expressions to mlrisc tools
3113 :    
3114 :     ----------------------------------------------------------------------
3115 : blume 1096 Name: Matthias Blume
3116 : blume 1098 Date: 2002/02/27 12:29:00 EST
3117 :     Tag: blume-20020227-cdebug
3118 :     Description:
3119 :    
3120 :     - made types in structure C and C_Debug to be equal
3121 :     - got rid of code duplication (c-int.sml vs. c-int-debug.sml)
3122 :     - there no longer is a C_Int_Debug (C_Debug is directly derived from C)
3123 :    
3124 :     ----------------------------------------------------------------------
3125 :     Name: Matthias Blume
3126 : blume 1096 Date: 2002/02/26 12:00:00 EST
3127 :     Tag: blume-20020226-ffi
3128 :     Description:
3129 :    
3130 :     1. Fixed a minor bug in CM's "noweb" tool:
3131 :     If numbering is turned off, then truly don't number (i.e., do not
3132 :     supply the -L option to noweb). The previous behavior was to supply
3133 :     -L'' -- which caused noweb to use the "default" line numbering scheme.
3134 :     Thanks to Chris Richards for pointing this out (and supplying the fix).
3135 :    
3136 :     2. Once again, I reworked some aspects of the FFI:
3137 :    
3138 :     A. The incomplete/complete type business:
3139 :    
3140 :     - Signatures POINTER_TO_INCOMPLETE_TYPE and accompanying functors are
3141 :     gone!
3142 :     - ML types representing an incomplete type are now *equal* to
3143 :     ML types representing their corresponding complete types (just like
3144 :     in C). This is still safe because ml-nlffigen will not generate
3145 :     RTTI for incomplete types, nor will it generate functions that
3146 :     require access to such RTTI. But when ML code generated from both
3147 :     incomplete and complete versions of the C type meet, the ML types
3148 :     are trivially interoperable.
3149 :    
3150 :     NOTE: These changes restore the full generality of the translation
3151 :     (which was previously lost when I eliminated functorization)!
3152 :    
3153 :     B. Enum types:
3154 :    
3155 :     - Structure C now has a type constructor "enum" that is similar to
3156 :     how the "su" constructor works. However, "enum" is not a phantom
3157 :     type because each "T enum" has values (and is isomorphic to
3158 :     MLRep.Signed.int).
3159 :     - There are generic access operations for enum objects (using
3160 :     MLRep.Signed.int).
3161 :     - ml-nlffigen will generate a structure E_foo for each "enum foo".
3162 :     * The structure contains the definition of type "mlrep" (the ML-side
3163 :     representation type of the enum). Normally, mlrep is the same
3164 :     as "MLRep.Signed.int", but if ml-nlffigen was invoked with "-ec",
3165 :     then mlrep will be defined as a datatype -- thus facilitating
3166 :     pattern matching on mlrep values.
3167 :     ("-ec" will be suppressed if there are duplicate values in an
3168 :     enumeration.)
3169 :     * Constructors ("-ec") or values (no "-ec") e_xxx of type mlrep
3170 :     will be generated for each C enum constant xxx.
3171 :     * Conversion functions m2i and i2m convert between mlrep and
3172 :     MLRep.Signed.int. (Without "-ec", these functions are identities.)
3173 :     * Coversion functions c and ml convert between mlrep and "tag enum".
3174 :     * Access functions (get/set) fetch and store mlrep values.
3175 :     - By default (unless ml-nlffigen was invoked with "-nocollect"), unnamed
3176 :     enumerations are merged into one single enumeration represented by
3177 :     structure E_'.
3178 :    
3179 :     ----------------------------------------------------------------------
3180 : leunga 1080 Name: Allen Leung
3181 : leunga 1094 Date: 2002/02/25 04:45:00 EST
3182 :     Tag: leunga-20020225-cps-spill
3183 :    
3184 :     This is a new implementation of the CPS spill phase.
3185 :     The new phase is in the new file compiler/CodeGen/cpscompile/spill-new.sml
3186 :     In case of problems, replace it with the old file spill.sml
3187 :    
3188 :     The current compiler runs into some serious performance problems when
3189 :     constructing a large record. This can happen when we try to compile a
3190 :     structure with many items. Even a very simple structure like the following
3191 :     makes the compiler slow down.
3192 :    
3193 :     structure Foo = struct
3194 :     val x_1 = 0w1 : Word32.int
3195 :     val x_2 = 0w2 : Word32.int
3196 :     val x_3 = 0w3 : Word32.int
3197 :     ...
3198 :     val x_N = 0wN : Word32.int
3199 :     end
3200 :    
3201 :     The following table shows the compile time, from N=1000 to N=4000,
3202 :     with the old compiler:
3203 :    
3204 :     N
3205 :     1000 CPS 100 spill 0.04u 0.00s 0.00g
3206 :     MLRISC ra 0.06u 0.00s 0.05g
3207 :     (spills = 0 reloads = 0)
3208 :     TOTAL 0.63u 0.07s 0.21g
3209 :    
3210 :     1100 CPS 100 spill 8.25u 0.32s 0.64g
3211 :     MLRISC ra 5.68u 0.59s 3.93g
3212 :     (spills = 0 reloads = 0)
3213 :     TOTAL 14.71u 0.99s 4.81g
3214 :    
3215 :     1500 CPS 100 spill 58.55u 2.34s 1.74g
3216 :     MLRISC ra 5.54u 0.65s 3.91g
3217 :     (spills = 543 reloads = 1082)
3218 :     TOTAL 65.40u 3.13s 6.00g
3219 :    
3220 :     2000 CPS 100 spill 126.69u 4.84s 3.08g
3221 :     MLRISC ra 0.80u 0.10s 0.55g
3222 :     (spills = 42 reloads = 84)
3223 :     TOTAL 129.42u 5.10s 4.13g
3224 :    
3225 :     3000 CPS 100 spill 675.59u 19.03s 11.64g
3226 :     MLRISC ra 2.69u 0.27s 1.38g
3227 :     (spills = 62 reloads = 124)
3228 :     TOTAL 682.48u 19.61s 13.99g
3229 :    
3230 :     4000 CPS 100 spill 2362.82u 56.28s 43.60g
3231 :     MLRISC ra 4.96u 0.27s 2.72g
3232 :     (spills = 85 reloads = 170)
3233 :     TOTAL 2375.26u 57.21s 48.00g
3234 :    
3235 :     As you can see the old cps spill module suffers from some serious
3236 : leunga 1115 performance problem. But since I cannot decipher the old code fully,
3237 :     instead of patching the problems up, I'm reimplementing it
3238 : leunga 1094 with a different algorithm. The new code is more modular,
3239 :     smaller when compiled, and substantially faster
3240 :     (O(n log n) time and O(n) space). Timing of the new spill module:
3241 :    
3242 :     4000 CPS 100 spill 0.02u 0.00s 0.00g
3243 :     MLRISC ra 0.25u 0.02s 0.15g
3244 :     (spills=1 reloads=3)
3245 :     TOTAL 7.74u 0.34s 1.62g
3246 :    
3247 :     Implementation details:
3248 :    
3249 :     As far as I can tell, the purpose of the CPS spill module is to make sure the
3250 :     number of live variables at any program point (the bandwidth)
3251 :     does not exceed a certain limit, which is determined by the
3252 :     size of the spill area.
3253 :    
3254 :     When the bandwidth is too large, we decrease the register pressure by
3255 :     packing live variables into spill records. How we achieve this is
3256 :     completely different than what we did in the old code.
3257 :    
3258 :     First, there is something about the MLRiscGen code generator
3259 :     that we should be aware of:
3260 :    
3261 :     o MLRiscGen performs code motion!
3262 :    
3263 :     In particular, it will move floating point computations and
3264 :     address computations involving only the heap pointer to
3265 :     their use sites (if there is only a single use).
3266 :     What this means is that if we have a CPS record construction
3267 :     statement
3268 :    
3269 :     RECORD(k,vl,w,e)
3270 :    
3271 :     we should never count the new record address w as live if w
3272 :     has only one use (which is often the case).
3273 :    
3274 :     We should do something similar to floating point, but the transformation
3275 :     there is much more complex, so I won't deal with that.
3276 :    
3277 :     Secondly, there are now two new cps primops at our disposal:
3278 :    
3279 :     1. rawrecord of record_kind option
3280 :     This pure operator allocates some uninitialized storage from the heap.
3281 :     There are two forms:
3282 :    
3283 :     rawrecord NONE [INT n] allocates a tagless record of length n
3284 :     rawrecord (SOME rk) [INT n] allocates a tagged record of length n
3285 :     and initializes the tag.
3286 :    
3287 :     2. rawupdate of cty
3288 :     rawupdate cty (v,i,x)
3289 :     Assigns to x to the ith component of record v.
3290 :     The storelist is not updated.
3291 :    
3292 :     We use these new primops for both spilling and increment record construction.
3293 :    
3294 :     1. Spilling.
3295 :    
3296 :     This is implemented with a linear scan algorithm (but generalized
3297 :     to trees). The algorithm will create a single spill record at the
3298 :     beginning of the cps function and use rawupdate to spill to it,
3299 :     and SELECT or SELp to reload from it. So both spills and reloads
3300 :     are fine-grain operations. In contrast, in the old algorithm
3301 :     "spills" have to be bundled together in records.
3302 :    
3303 :     Ideally, we should sink the spill record construction to where
3304 :     it is needed. We can even split the spill record into multiple ones
3305 :     at the places where they are needed. But CPS is not a good
3306 :     representation for global code motion, so I'll keep it simple and
3307 :     am not attempting this.
3308 :    
3309 :     2. Incremental record construction (aka record splitting).
3310 :    
3311 :     Long records with many component values which are simulatenously live
3312 :     (recall that single use record addresses are not considered to
3313 :     be live) are constructed with rawrecord and rawupdate.
3314 :     We allocate space on the heap with rawrecord first, then gradually
3315 :     fill it in with rawupdate. This is the technique suggested to me
3316 :     by Matthias.
3317 :    
3318 :     Some restrictions on when this is applicable:
3319 :     1. It is not a VECTOR record. The code generator currently does not handle
3320 :     this case. VECTOR record uses double indirection like arrays.
3321 :     2. All the record component values are defined in the same "basic block"
3322 :     as the record constructor. This is to prevent speculative
3323 :     record construction.
3324 :    
3325 :     ----------------------------------------------------------------------
3326 :     Name: Allen Leung
3327 : leunga 1086 Date: 2002/02/22 01:02:00 EST
3328 :     Tag: leunga-20020222-mlrisc-tools
3329 :    
3330 :     Minor bug fixes in the parser and rewriter
3331 :    
3332 :     ----------------------------------------------------------------------
3333 :     Name: Allen Leung
3334 : leunga 1085 Date: 2002/02/21 20:20:00 EST
3335 :     Tag: leunga-20020221-peephole
3336 :    
3337 :     Regenerated the peephole files. Some contained typos in the specification
3338 :     and some didn't compile because of pretty printing bugs in the old version
3339 :     of 'nowhere'.
3340 :    
3341 :     ----------------------------------------------------------------------
3342 :     Name: Allen Leung
3343 : leunga 1079 Date: 2002/02/19 20:20:00 EST
3344 :     Tag: leunga-20020219-mlrisc-tools
3345 :     Description:
3346 :    
3347 :     Minor bug fixes to the mlrisc-tools library:
3348 :    
3349 :     1. Fixed up parsing colon suffixed keywords
3350 :     2. Added the ability to shut the error messages up
3351 :     3. Reimplemented the pretty printer and fixed up/improved
3352 :     the pretty printing of handle and -> types.
3353 :     4. Fixed up generation of literal symbols in the nowhere tool.
3354 :     5. Added some SML keywords to to sml.sty
3355 :    
3356 :     ----------------------------------------------------------------------
3357 :     Name: Matthias Blume
3358 : blume 1078 Date: 2002/02/19 16:20:00 EST
3359 :     Tag: blume-20020219-cmffi
3360 :     Description:
3361 :    
3362 :     A wild mix of changes, some minor, some major:
3363 :    
3364 :     * All C FFI-related libraries are now anchored under $c:
3365 :     $/c.cm --> $c/c.cm
3366 :     $/c-int.cm --> $c/internals/c-int.cm
3367 :     $/memory.cm --> $c/memory/memory.cm
3368 :    
3369 :     * "make" tool (in CM) now treats its argument pathname slightly
3370 :     differently:
3371 :     1. If the native expansion is an absolute name, then before invoking
3372 :     the "make" command on it, CM will apply OS.Path.mkRelative
3373 :     (with relativeTo = OS.FileSys.getDir()) to it.
3374 :     2. The argument will be passed through to subsequent phases of CM
3375 :     processing without "going native". In particular, if the argument
3376 :     was an anchored path, then "make" will not lose track of that anchor.
3377 :    
3378 :     * Compiler backends now "know" their respective C calling conventions
3379 :     instead of having to be told about it by ml-nlffigen. This relieves
3380 :     ml-nlffigen from one of its burdens.
3381 :    
3382 :     * The X86Backend has been split into X86CCallBackend and X86StdCallBackend.
3383 :    
3384 :     * Export C_DEBUG and C_Debug from $c/c.cm.
3385 :    
3386 :     * C type encoding in ml-nlffi-lib has been improved to model the conceptual
3387 :     subtyping relationship between incomplete pointers and their complete
3388 :     counterparts. For this, ('t, 'c) ptr has been changed to 'o ptr --
3389 :     with the convention of instantiating 'o with ('t, 'c) obj whenever
3390 :     the pointer target type is complete. In the incomplete case, 'o
3391 :     will be instantiated with some "'c iobj" -- a type obtained by
3392 :     using one of the functors PointerToIncompleteType or PointerToCompleteType.
3393 :    
3394 :     Operations that work on both incomplete and complete pointer types are
3395 :     typed as taking an 'o ptr while operations that require the target to
3396 :     be known are typed as taking some ('t, 'c) obj ptr.
3397 :    
3398 :     voidptr is now a bit "more concrete", namely "type voidptr = void ptr'"
3399 :     where void is an eqtype without any values. This makes it possible
3400 :     to work on voidptr values using functions meant to operate on light
3401 :     incomplete pointers.
3402 :    
3403 :     * As a result of the above, signature POINTER_TO_INCOMPLETE_TYPE has
3404 :     been vastly simplified.
3405 :    
3406 :     ----------------------------------------------------------------------
3407 :     Name: Matthias Blume
3408 : blume 1076 Date: 2002/02/19 10:48:00 EST
3409 :     Tag: blume-20020219-pqfix
3410 :     Description:
3411 :    
3412 :     Applied Chris Okasaki's bug fix for priority queues.
3413 :    
3414 :     ----------------------------------------------------------------------
3415 :     Name: Matthias Blume
3416 : blume 1073 Date: 2002/02/15 17:05:00
3417 : blume 1069 Tag: Release_110_39
3418 :     Description:
3419 :    
3420 : blume 1073 Last-minute retagging is becoming a tradition... :-(
3421 :    
3422 :     This is the working release 110.39.
3423 :    
3424 :     ----------------------------------------------------------------------
3425 :     Name: Matthias Blume
3426 :     Date: 2002/02/15 16:00:00 EST
3427 :     Tag: Release_110_39-orig
3428 :     Description:
3429 :    
3430 : blume 1069 Working release 110.39. New bootfiles.
3431 :    
3432 : blume 1073 (Update: There was a small bug in the installer so it wouldn't work
3433 :     with all shells. So I retagged. -Matthias)
3434 :    
3435 : blume 1069 ----------------------------------------------------------------------
3436 :     Name: Matthias Blume
3437 : blume 1068 Date: 2002/02/15 14:17:00 EST
3438 :     Tag: blume-20020215-showbindings
3439 :     Description:
3440 :    
3441 :     Added EnvRef.listBoundSymbols and CM.State.showBindings. Especially
3442 :     the latter can be useful for exploring what bindings are available at
3443 :     the interactive prompt. (The first function returns only the list
3444 :     of symbols that are really bound, the second prints those but also the
3445 :     ones that CM's autoloading mechanism knows about.)
3446 :    
3447 :     ----------------------------------------------------------------------
3448 :     Name: Matthias Blume
3449 : blume 1067 Date: 2002/02/15 12:08:00 EST
3450 :     Tag: blume-20020215-iptrs
3451 :     Description:
3452 :    
3453 :     Two improvements to ml-nlffigen:
3454 :    
3455 :     1. Write files only if they do not exist or if their current contents
3456 :     do not coincide with what's being written. (That is, avoid messing
3457 :     with the time stamps unless absolutely necessary.)
3458 :    
3459 :     2. Implement a "repository" mechanism for generated files related
3460 :     to "incomplete pointer types". See the README file for details.
3461 :    
3462 :     ----------------------------------------------------------------------
3463 :     Name: Matthias Blume
3464 : blume 1066 Date: 2002/02/14 11:50:00 EST
3465 :     Tag: blume-20020214-quote
3466 :     Description:
3467 :    
3468 :     Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm). This is required
3469 :     because of the new and improved tag generation scheme. (Thanks to Allen
3470 :     Leung for pointing it out.)
3471 :    
3472 :     ----------------------------------------------------------------------
3473 : george 1065 Name: Lal George
3474 :     Date: 2002/02/14 09:55:27 EST 2002
3475 :     Tag: george-20020214-isabelle-bug
3476 :     Description:
3477 :    
3478 :     Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
3479 :     of Isabelle on the x86.
3480 :    
3481 :     From Allen:
3482 :     -----------
3483 :     I've found the problem:
3484 :    
3485 :     in ra-core.sml, I use the counter "blocked" to keep track of the
3486 :     true number of elements in the freeze queue. When the counter goes
3487 :     to zero, I skip examining the queue. But I've messed up the
3488 :     bookkeeping in combine():
3489 :    
3490 :     else ();
3491 :     case !ucol of
3492 :     PSEUDO => (if !cntv > 0 then
3493 :     (if !cntu > 0 then blocked := !blocked - 1 else ();
3494 :     ^^^^^^^^^^^^^^^^^^^^^^^
3495 :     moveu := mergeMoveList(!movev, !moveu)
3496 :     )
3497 :     else ();
3498 :    
3499 :     combine() is called to coalesce two nodes u and v.
3500 :     I think I was thinking that if the move counts of u and v are both
3501 :     greater than zero then after they are coalesced then one node is
3502 :     removed from the freeze queue. Apparently I was thinking that
3503 :     both u and v are of low degree, but that's clearly not necessarily true.
3504 :    
3505 :    
3506 :     02/12/2002:
3507 :     Here's the patch. HOL now compiles.
3508 :    
3509 :     I don't know how this impact on performance (compile
3510 :     time or runtime). This bug caused the RA (especially on the x86)
3511 :     to go thru the potential spill phase when there are still nodes on the
3512 :     freeze queue.
3513 :    
3514 :    
3515 :    
3516 :    
3517 :     ----------------------------------------------------------------------
3518 : blume 1058 Name: Matthias Blume
3519 : blume 1064 Date: 2002/02/13 22:40:00 EST
3520 :     Tag: blume-20020213-fptr-rtti
3521 :     Description:
3522 :    
3523 :     Fixed a bug in ml-nlffigen that was introduced with one of the previous
3524 :     updates.
3525 :    
3526 :     ----------------------------------------------------------------------
3527 :     Name: Matthias Blume
3528 : blume 1063 Date: 2002/02/13 16:41:00 EST
3529 :     Tag: blume-20020213-cmlpq
3530 :     Description:
3531 :    
3532 :     Added new priority queue export symbols (which have just been added to
3533 :     smlnj-lib.cm) to CML's version of smlnj-lib.cm. (Otherwise CML would
3534 :     not compile and the installer would choke.)
3535 :    
3536 :     ----------------------------------------------------------------------
3537 :     Name: Matthias Blume
3538 : blume 1062 Date: 2002/02/13 16:15:00 EST
3539 :     Tag: blume-20020213-various
3540 :     Description:
3541 :    
3542 :     1. More tweaks to ml-nlffigen:
3543 :    
3544 :     - better internal datastructures (resulting in slight speedup)
3545 :     - "-match" option requires exact match
3546 :     - "localized" gensym counters (untagged structs/unions nested within
3547 :     other structs/unions or within typedefs get a fresh counter; their
3548 :     tag will be prefixed by a concatenation of their parents' tags)
3549 :     - bug fixes (related to calculation of transitive closure of types
3550 :     to be included in the output)
3551 :    
3552 :     2. Minor Basis updates:
3553 :    
3554 :     - added implementations for List.collate and Option.app
3555 :    
3556 :     ----------------------------------------------------------------------
3557 :     Name: Matthias Blume
3558 : blume 1060 Date: 2002/02/11 15:55:00 EST
3559 :     Tag: blume-20020211-gensym
3560 :     Description:
3561 :    
3562 :     Added a "-gensym" option to command line of ml-nlffigen. This can be
3563 :     used to specify a "stem" -- a string that is inserted in all "gensym'd"
3564 :     names (ML structure names that correspond to unnamed C structs, unions,
3565 :     and enums), so that separate runs of ml-nlffigen do not clash.
3566 :    
3567 :     ----------------------------------------------------------------------
3568 :     Name: Matthias Blume
3569 : blume 1059 Date: 2002/02/11 12:05:00 EST
3570 :     Tag: blume-20020211-gensml
3571 :     Description:
3572 :    
3573 :     A quick fix for a problem with GenSML (in the pgraph-util library):
3574 :     Make generation of toplevel "local" optional. (Strictly speaking,
3575 :     signature definitions within "local" are not legal SML.)
3576 :    
3577 :     Other than that: updates to INSTALL and cm/TODO.
3578 :    
3579 :     ----------------------------------------------------------------------
3580 :     Name: Matthias Blume
3581 : blume 1058 Date: 2002/02/08 15:00:00 EST
3582 :     Tag: blume-20020208-uniquepid
3583 :     Description:
3584 :    
3585 :     0. Version number has been bumped to 110.38.1. NEW BOOTFILES!!!
3586 :    
3587 :     1. The installer (config/install.sh) has gotten smarter:
3588 :    
3589 :     - Configuration options are a bit easier to specify now
3590 :     (in config/targets).
3591 :     - Bug in recognizing .tar.bz2 files fixed.
3592 :     - Installer automatically resolves dependencies between
3593 :     configuration options (e.g., if you ask for eXene, you will
3594 :     also get cml -- regardless whether you asked for it or not).
3595 :     - Installer can run in "quieter mode" by setting the environment
3596 :     variable INSTALL_QUIETLY to "true". "Quieter" does not mean
3597 :     "completely silent", though.
3598 :     - Build HashCons library as part of smlnj-lib.
3599 :    
3600 :     2. A new scheme for assigning persistent identifiers to compilation
3601 :     units (and, by extension, to types etc.) has been put into place.
3602 :     This fixes a long-standing bug where types and even dynamic values
3603 :     can get internally confused, thereby compromising type safety
3604 :     (abstraction) and dynamic correctness. See
3605 :    
3606 :     http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
3607 :    
3608 :     for an example of how things could go wrong until now.
3609 :    
3610 :     The downside of the new scheme is that pids are not quite as
3611 :     persistent as they used to be: CM will generate a fresh pid
3612 :     for every compilation unit that it thinks it sees for the first
3613 :     time. That means that if you compile starting from a clean, fresh
3614 :     source tree at two different times, you end up with different
3615 :     binaries.
3616 :    
3617 :     Cutoff recompilation, however, has not been compromised because
3618 :     CM keeps pid information in special caches between runs.
3619 :    
3620 :     ----------------------------------------------------------------------
3621 : george 1053 Name: Lal George
3622 : george 1055 Date: 2002/02/07 15:34:13 EST 2002
3623 :     Tag: <none>
3624 :     Description:
3625 :    
3626 :     Compilers that generate assembly code may produce global labels
3627 :     whose value is resolved at link time. The various peephole optimization
3628 :     modules did not take this in account.
3629 :    
3630 :     TODO. The Labels.addrOf function should really return an option
3631 :     type so that clients are forced to deal with this issue, rather
3632 :     than an exception being raised.
3633 :    
3634 :     ----------------------------------------------------------------------
3635 :     Name: Lal George
3636 : george 1053 Date: 2002/02/06 13:55:02 EST
3637 :     Tag: george-20020206-ra-breakup
3638 :     Description:
3639 :    
3640 :     1. A bug fix from Allen.
3641 :    
3642 :     A typo causes extra fstp %st(0)'s to be generated at compensation
3643 :     edges, which might cause stack underflow traps at runtime. This
3644 :     occurs in fft where there are extraneous fstps right before the 'into'
3645 :     trap instruction (in this case they are harmless since none of the
3646 :     integers overflow.)
3647 :    
3648 : george 1054 2. Pulled out various utility modules that were embedded in the modules
3649 : george 1053 of the register allocator. I need these modules for other purposes, but
3650 : george 1054 they are not complete enough to put into a library (just yet).
3651 : george 1053 ----------------------------------------------------------------------
3652 : blume 1049 Name: Matthias Blume
3653 :     Date: 2002/01/31 16:05:00 EST
3654 :     Tag: blume-20020131-sparc-ccalls
3655 :     Description:
3656 :    
3657 :     1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
3658 :     of extra stack space by mistake. Fixed.
3659 :    
3660 :     2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
3661 :    
3662 :     ----------------------------------------------------------------------
3663 : leunga 1048 Name: Allen Leung
3664 :     Date: 2002/01/30
3665 :     Tag: leunga-20020130-nowhere-bug-fix
3666 :     Description:
3667 :    
3668 :     MLRISC bug fixes:
3669 :     1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
3670 :     2. MachineInt.fromString was negating its value.
3671 :    
3672 :     ----------------------------------------------------------------------
3673 : blume 1039 Name: Matthias Blume
3674 : blume 1047 Date: 2002/01/29
3675 :     Tag: blume-20020129-INSTALL
3676 :     Description:
3677 :    
3678 :     - Added somewhat detailed installation instructions (file INSTALL).
3679 :     - Fixed curl-detection bug in config/install.sh.
3680 :     - It is now possible to select the URL getter using the URLGETTER
3681 :     environment variable:
3682 :    
3683 :     not set / "unknown" --> automatic detection (script tries wget,
3684 :     curl, and lynx)
3685 :     "wget" / "curl" / "lynx" --> use the specified program (script "knows"
3686 :     how to properly invoke them)
3687 :     other --> use $URLGETTER directly, it must take
3688 :     precisely two command-line arguments
3689 :     (source URL and destination file name)
3690 :    
3691 :     ----------------------------------------------------------------------
3692 :     Name: Matthias Blume
3693 : blume 1044 Date: 2002/01/28
3694 : blume 1045 Tag: blume-20020128-sparc-ccalls
3695 :     Description:
3696 :    
3697 :     - Fixed problem with calculation of "used" registers in sparc-c-calls.
3698 :     - Make use of the allocParam argument in sparc-c-calls.
3699 :    
3700 :     ----------------------------------------------------------------------
3701 :     Name: Matthias Blume
3702 :     Date: 2002/01/28
3703 : blume 1044 Tag: blume-20020128-allocParam
3704 :     Description:
3705 :    
3706 :     John Reppy: Changes c-calls API to accept client-callback for
3707 :     allocating extra stack space.
3708 :     me: Corresponding changes to mlriscGen (using a dummy argument that
3709 :     does not change the current behavior).
3710 :    
3711 :     ----------------------------------------------------------------------
3712 :     Name: Matthias Blume
3713 : blume 1040 Date: 2002/01/28 12:00:00
3714 :     Tag: Release_110_38
3715 :     Description:
3716 :    
3717 :     This time for real!!!
3718 :    
3719 :     ----------------------------------------------------------------------
3720 :     Name: Matthias Blume
3721 : blume 1039 Date: 2002/01/28 10:56:00 EST
3722 :     Tag: blume-20020128-retraction
3723 :     Description:
3724 :    
3725 :     0. Retracted earlier 110.38. (The Release_110_38 tag has been replaced
3726 :     with blume-Release_110_38-retracted.)
3727 :    
3728 :     1. Fixed a problem with incorrect rounding modes in real64.sml.
3729 :     (Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
3730 :    
3731 :     2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
3732 :     and enums fixed. The naming of corresponding ML identifiers should
3733 :     now be consistent again.
3734 :    
3735 :     ----------------------------------------------------------------------
3736 : leunga 1038 Name: Allen Leung
3737 :     Date: 2002/01/27
3738 :     Tag: leunga-20020127-nowhere
3739 :     Description:
3740 :    
3741 :     Added a target called nowhere in the configuration scripts.
3742 :     Enabling this will build the MLRISC 'nowhere' tool (for translating
3743 :     programs with where-clauses into legal SML code) during installation.
3744 :    
3745 :     ----------------------------------------------------------------------
3746 : blume 1036 Name: Matthias Blume
3747 : leunga 1038 Date: 2002/01/25 21:27:00 EST
3748 : blume 1039 Tag: blume-Release_110_38-retracted
3749 : blume 1037 Description:
3750 :    
3751 :     Call it a (working) release! Version is 110.38. Bootfiles are ready.
3752 :    
3753 :     README will be added later.
3754 :    
3755 : blume 1039 !!! NOTE: Re-tagged as blume-Release_110_38-retracted. Original tag
3756 :     (Release_110_38) removed. Reason: Last-minute bug fixes.
3757 :    
3758 : blume 1037 ----------------------------------------------------------------------
3759 :     Name: Matthias Blume
3760 : blume 1036 Date: 2002/01/25
3761 :     Tag: blume-20020125-ffi
3762 :     Description:
3763 :    
3764 :     A large number of tweaks and improvements to ml-nlffi-lib and
3765 :     ml-nlffigen:
3766 :    
3767 :     - ML represenation types have been streamlined
3768 :     - getter and setter functions work with concrete values, not abstract
3769 :     ones where possible
3770 :     - ml-nlffigen command line more flexible (see README file there)
3771 :     - some bugs have been fixed (hopefully)
3772 :    
3773 :     ----------------------------------------------------------------------
3774 : george 1034 Name: Lal George
3775 :     Date: 2002/01/24
3776 :     Tag: george-20020124-risc-ra-interface
3777 :     Description:
3778 :    
3779 :     There is a dramatic simplification in the interface to the
3780 :     register allocator for RISC architectures as a result of making
3781 :     parallel copy instructions explicit.
3782 :    
3783 :     ----------------------------------------------------------------------
3784 : blume 1028 Name: Matthias Blume
3785 : blume 1032 Date: 2002/01/22
3786 :     Tag: blume-20020122-x86-ccalls
3787 :     Description:
3788 :    
3789 :     Bug fix for c-calls on x86 (having to do with how char- and
3790 :     short-arguments are being handled).
3791 :    
3792 :     ----------------------------------------------------------------------
3793 :     Name: Matthias Blume
3794 : blume 1031 Date: 2002/01/21
3795 :     Tag: blume-20020121-ff
3796 :     Description:
3797 :    
3798 :     Another day of fiddling with the FFI...
3799 :    
3800 :     1. Bug fix/workaround: CKIT does not complain about negative array
3801 :     dimensions, so ml-nlffigen has to guard itself against this possibility.
3802 :     (Otherwise a negative dimension would send it into an infinite loop.)
3803 :    
3804 :     2. Some of the abstract types (light objects, light pointers, most "base"
3805 :     types) in structure C are now eqtypes.
3806 :    
3807 :     3. Added constructors and test functions for NULL function pointers.
3808 :    
3809 :     ----------------------------------------------------------------------
3810 :     Name: Matthias Blume
3811 : blume 1028 Date: 2002/01/18
3812 : blume 1030 Tag: blume-20020118-ready-for-new-release
3813 :     Description:
3814 :    
3815 :     Made config/srcarchiveurl point to a new place. (Will provide boot
3816 :     files shortly.)
3817 :    
3818 :     Maybe we christen this to be 110.38?
3819 :    
3820 :     ----------------------------------------------------------------------
3821 :     Name: Matthias Blume
3822 :     Date: 2002/01/18
3823 : blume 1029 Tag: blume-20020118-more-ffifiddle
3824 :     Description:
3825 :    
3826 :     Today's FFI fiddling:
3827 :    
3828 :     - Provided a structure CGetSet with "convenient" versions of C.Get.* and
3829 :     C.Set.* that use concrete (MLRep.*) arguments and results instead
3830 :     of abstract ones.
3831 :    
3832 :     - Provided word-style bit operations etc. for "int" representation
3833 :     types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
3834 :     and Long.
3835 :    
3836 :     ----------------------------------------------------------------------
3837 :     Name: Matthias Blume
3838 :     Date: 2002/01/18
3839 : blume 1028 Tag: blume-20020118-use-x86-fp
3840 :     Description:
3841 :    
3842 :     Now that x86-fast-fp seems to be working, I turned it back on again
3843 :     by default. (Seems to work fine now, even with the FFI.)
3844 :    
3845 :     Other than that, I added some documentation about the FFI to
3846 :     src/ml-nlffigen/README and updated the FFI test examples in
3847 :     src/ml-nlffi-lib/Tests/*.
3848 :    
3849 :     ----------------------------------------------------------------------
3850 : leunga 1025 Name: Allen Leung
3851 :     Date: 2002/01/17
3852 :     Tag: leunga-20020117-x86-fast-fp-call
3853 :     Description:
3854 :    
3855 :     1. Fixed a problem with handling return fp values when x86's fast fp
3856 :     mode is turned on.
3857 :    
3858 :     2. Minor pretty printing fix for cellset. Print %st(0) as %st(0) instead
3859 :     of %f32.
3860 :    
3861 :     3. Added a constructor INT32lit to the ast of MLRISC tools.
3862 :    
3863 :     ----------------------------------------------------------------------
3864 : blume 1021 Name: Matthias Blume
3865 :     Date: 2002/01/16
3866 :     Tag: blume-20020116-ffifiddle
3867 :     Description:
3868 :    
3869 :     More fiddling with the FFI interface:
3870 :    
3871 :     - Make constness 'c instead of rw wherever possible. This eliminates
3872 :     the need for certain explicit coercions. (However, due to ML's
3873 :     value polymorphism, there will still be many cases where explicit
3874 :     coercions are necessary. Phantom types are not the whole answer
3875 :     to modeling a subtyping relationship in ML.)
3876 :    
3877 :     - ro/rw coersions for pointers added. (Avoids the detour through */&.)
3878 :    
3879 :     - "printf" test example added to src/ml-nlffi-lib/Tests. (Demonstrates
3880 :     clumsy workaround for varargs problem.)
3881 :    
3882 :     ----------------------------------------------------------------------
3883 : george 1016 Name: Lal George
3884 :     Date: 2002/01/15
3885 :     Tag: <none>
3886 :     Description:
3887 :    
3888 :     1. Since COPY instructions are no longer native to the architecture,
3889 :     a generic functor can be used to implement the expandCopies function.
3890 :    
3891 :     2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
3892 :     TEXT segment.
3893 :    
3894 :     ----------------------------------------------------------------------
3895 : blume 1011 Name: Matthias Blume
3896 : blume 1015 Date: 2002/01/15
3897 :     Tag: blume-20020115-ffiupdates
3898 :     Description:
3899 :    
3900 :     1. Fix for bug resulting in single-precision float values being returned
3901 :     incorrectly from FFI calls.
3902 :    
3903 :     2. Small modifications to C FFI API:
3904 :    
3905 :     - memory-allocation routines return straight objects (no options)
3906 :     and raise an exception in out-of-memory situations
3907 :     - unsafe extensions to cast between function pointers and pointers
3908 :     from/to ints
3909 :     - added structure C_Debug as an alternative to structure C where
3910 :     pointer-dereferencing (|*| and |*!) always check for null-pointers
3911 :     - added open_lib' to DynLinkage; open_lib' works like open_lib
3912 :     but also takes a (possibly empty) list of existing library handles
3913 :     that the current library depends on
3914 :    
3915 :     ----------------------------------------------------------------------
3916 :     Name: Matthias Blume
3917 : blume 1011 Date: 2002/01/10
3918 :     Tag: blume-20020110-newffigen
3919 :     Description:
3920 :    
3921 :     1. Updates to portable graph code.
3922 :    
3923 :     2. Major update to ml-nlffigen and ml-nlffi-lib. Things are much
3924 :     more scalable now so that even huge interfaces such as the one
3925 :     for GTK compile in finite time and space. :-)
3926 :     See src/ml-nlffigen/README for details on what's new.
3927 :    
3928 :     ----------------------------------------------------------------------
3929 : george 1003 Name: Lal George
3930 : george 1009 Date: 2001/01/09 14:31:35 EST 2002
3931 :     Tag: george-20011206-rm-native-copy
3932 :     Description:
3933 :    
3934 :     Removed the native COPY and FCOPY instructions
3935 :     from all the architectures and replaced it with the
3936 :     explicit COPY instruction from the previous commit.
3937 :    
3938 :     It is now possible to simplify many of the optimizations
3939 :     modules that manipulate copies. This has not been
3940 :     done in this change.
3941 :    
3942 :     ----------------------------------------------------------------------
3943 :     Name: Lal George
3944 : george 1003 Date: 2001/12/06 16:50:13 EST 2001
3945 :     Tag: george-20011206-mlrisc-instruction
3946 :     Description:
3947 : george 824
3948 : george 1003 Changed the representation of instructions from being fully abstract
3949 :     to being partially concrete. That is to say:
3950 :    
3951 :     from
3952 :     type instruction
3953 :    
3954 :     to
3955 :     type instr (* machine instruction *)
3956 :    
3957 :     datatype instruction =
3958 :     LIVE of {regs: C.cellset, spilled: C.cellset}
3959 :     | KILL of {regs: C.cellset, spilled: C.cellset}
3960 :     | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
3961 :     | ANNOTATION of {i: instruction, a: Annotations.annotation}
3962 :     | INSTR of instr
3963 :    
3964 :     This makes the handling of certain special instructions that appear on
3965 :     all architectures easier and uniform.
3966 :    
3967 :     LIVE and KILL say that a list of registers are live or killed at the
3968 :     program point where they appear. No spill code is generated when an
3969 :     element of the 'regs' field is spilled, but the register is moved to
3970 :     the 'spilled' (which is present, more for debugging than anything else).
3971 :    
3972 :     LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
3973 :     We used to generate:
3974 :    
3975 :     DEFFREG f1
3976 :     f1 := f2 + f3
3977 :     trapb
3978 :    
3979 :     but now generate:
3980 :    
3981 :     f1 := f2 + f3
3982 :     trapb
3983 :     LIVE {regs=[f1,f2,f3], spilled=[]}
3984 :    
3985 :     Furthermore, the DEFFREG (hack) required that all floating point instruction
3986 :     use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
3987 :     defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
3988 :     in a cleaner alpha implementation. (Hopefully, intel will not get rid of
3989 :     this architecture).
3990 :    
3991 :     COPYXXX is intended to replace the parallel COPY and FCOPY available on
3992 :     all the architectures. This will result in further simplification of the
3993 :     register allocator that must be aware of them for coalescing purposes, and
3994 :     will also simplify certain aspects of the machine description that provides
3995 :     callbacks related to parallel copies.
3996 :    
3997 :     ANNOTATION should be obvious, and now INSTR represents the honest to God
3998 :     machine instruction set!
3999 :    
4000 :     The <arch>/instructions/<arch>Instr.sml files define certain utility
4001 :     functions for making porting easier -- essentially converting upper case
4002 :     to lower case. All machine instructions (of type instr) are in upper case,
4003 :     and the lower case form generates an MLRISC instruction. For example on
4004 :     the alpha we have:
4005 :    
4006 :     datatype instr =
4007 :     LDA of {r:cell, b:cell, d:operand}
4008 :     | ...
4009 :    
4010 :     val lda : {r:cell, b:cell, d:operand} -> instruction
4011 :     ...
4012 :    
4013 :     where lda is just (INSTR o LDA), etc.
4014 :    
4015 : leunga 815 ----------------------------------------------------------------------
4016 : blume 986 Name: Matthias Blume
4017 : blume 993 Date: 2001/11/22 21:40:00 EST
4018 :     Tag: Release_110_37
4019 :     Description:
4020 :    
4021 :     Release 110.37. This time for real.
4022 :    
4023 :     ----------------------------------------------------------------------
4024 :     Name: Matthias Blume
4025 : blume 988 Date: 2001/11/21 16:35:00 EST
4026 :     Tag: blume-20011121-foot-in-mouth
4027 :     Description:
4028 :    
4029 :     Removed the "Release_110_37" tag because of a serious bug.
4030 :     This will be re-tagged once the bug is fixed.
4031 :    
4032 :     ----------------------------------------------------------------------
4033 :     Name: Matthias Blume
4034 : blume 987 Date: 2001/11/21 16:14:00 EST
4035 :     Tag: blume-20011121-forgottenfile
4036 :     Description:
4037 :    
4038 :     Forgot to add a file. (Just a .tex-file -- part of
4039 :     the CM manual source.)
4040 :    
4041 :     ----------------------------------------------------------------------
4042 :     Name: Matthias Blume
4043 : blume 986 Date: 2001/11/21 16:10:00 EST
4044 : blume 988 Tag: blume-20011121-invalid_110_37
4045 : blume 986 Description:
4046 :    
4047 : blume 988 Note: I removed the original tag "Release_110_37" from this commit
4048 :     because we found a serious bug in all non-x86 backends.
4049 :     - Matthias
4050 :    
4051 : blume 986 1. Modifications to the SML/NJ code generator and to the runtime system
4052 :     so that code object name strings are directly inserted into code
4053 :     objects at code generation time. The only business the runtime system
4054 :     has with this is now to read the name strings on occasions.
4055 :     (The encoding of the name string has also changed somewhat.)
4056 :    
4057 :     2. CM now implements a simple "set calculus" for specifying export lists.
4058 :     In particular, it is now possible to refer to the export lists of
4059 :     other libraries/groups/sources and form unions as well as differences.
4060 :     See the latest CM manual for details.
4061 :    
4062 :     3. An separate notion of "proxy" libraries has again be eliminated from
4063 :     CM's model. (Proxy libraries are now simply a special case of using
4064 :     the export list calculus.)
4065 :    
4066 :     4. Some of the existing libraries now take advantage of the new set
4067 :     calculus.
4068 :     (Notice that not all libraries have been converted because some
4069 :     of the existing .cm-files are supposed to be backward compatible
4070 :     with 110.0.x.)
4071 :    
4072 :     5. Some cleanup in stand-alone programs. (Don't use "exnMessage" -- use
4073 :     "General.exnMessage"! The former relies on a certain hook to be
4074 :     initialized, and that often does not happen in the stand-alone case.)
4075 :    
4076 :     ----------------------------------------------------------------------
4077 : george 984 Name: Lal George
4078 :     Date: 2001/11/21 13:56:18 EST
4079 :     Tag: george-2001121-pseudo-ops
4080 :     Description:
4081 :    
4082 :     Implemented a complete redesign of MLRISC pseudo-ops. Now there
4083 :     ought to never be any question of incompatabilities with
4084 :     pseudo-op syntax expected by host assemblers.
4085 :    
4086 :     For now, only modules supporting GAS syntax are implemented
4087 :     but more should follow, such as MASM, and vendor assembler
4088 :     syntax, e.g. IBM as, Sun as, etc.
4089 :    
4090 :     ----------------------------------------------------------------------
4091 : blume 977 Name: Matthias Blume
4092 :     Date: 2001/11/14 11:52:00 EST
4093 :     Tag: blume-20011114-srcname
4094 :     Description:
4095 :    
4096 :     1. Routed the name of the current source file to mlriscgen where it
4097 :     should be directly emitted into the code object. (This last part
4098 :     is yet to be done.)
4099 :    
4100 :     2. Some cleanup of the pgraph code to make it match the proposal that
4101 :     I put out the other day. (The proposal notwithstanding, things are
4102 :     still in flux here.)
4103 :    
4104 :     ----------------------------------------------------------------------
4105 : george 976 Name: Lal George
4106 :     Date: 2001/11/14 09:44:04 EST
4107 :     Tag:
4108 :     Description:
4109 :    
4110 :     Fix for a backpatching bug reported by Allen.
4111 :    
4112 :     Because the boundary between short and long span-dependent
4113 :     instructions is +/- 128, there are an astounding number of
4114 :     span-dependent instructions whose size is over estimated.
4115 :    
4116 :     Allen came up with the idea of letting the size of span
4117 :     dependent instructions be non-monotonic, for a maxIter
4118 :     number of times, after which the size must be monotonically
4119 :     increasing.
4120 :    
4121 :     This table shows the number of span-dependent instructions
4122 :     whose size was over-estimated as a function of maxIter, for the
4123 :     file Parse/parse/ml.grm.sml:
4124 :    
4125 :     maxIter # of instructions:
4126 :     10 687
4127 :     20 438
4128 :     30 198
4129 :     40 0
4130 :    
4131 :     In compiling the compiler, there is no significant difference in
4132 :     compilation speed between maxIter=10 and maxIter=40. Actually,
4133 :     my measurements showed that maxIter=40 was a tad faster than
4134 :     maxIter=10! Also 96% of the files in the compiler reach a fix
4135 :     point within 13 iterations, so fixing maxIter at 40, while high,
4136 :     is okay.
4137 :    
4138 :     ----------------------------------------------------------------------
4139 : blume 975 Name: Matthias Blume
4140 :     Date: 2001/10/31 15:25:00 EST
4141 :     Tag: blume-20011031-pgraph
4142 :     Description:
4143 :    
4144 :     CKIT:
4145 :     * Changed the "Function" constructor of type Ast.ctype to carry optional
4146 :     argument identifiers.
4147 :     * Changed the return type of TypeUtil.getFunction accordingly.
4148 :     * Type equality ignores the argument names.
4149 :     * TypeUtil.composite tries to preserve argument names but gives up quickly
4150 :     if there is a mismatch.
4151 :    
4152 :     installation script:
4153 :     * attempts to use "curl" if available (unless "wget" is available as well)
4154 :    
4155 :     CM:
4156 :     * has an experimental implementation of "portable graphs" which I will
4157 :     soon propose as an implementation-independent library format
4158 :     * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
4159 :    
4160 :     NLFFI-LIB:
4161 :     * some cleanup (all cosmetic)
4162 :    
4163 :     NLFFIGEN:
4164 :     * temporarily disabled the mechanism that suppresses ML output for
4165 :     C definitions whose identifiers start with an underscore character
4166 :     * generate val bindings for enum constants
4167 :     * user can request that only one style (light or heavy) is being used;
4168 :     default is to use both (command-line arguments: -heavy and -light)
4169 :     * fixed bug in handling of function types involving incomplete pointers
4170 :     * generate ML entry points that take record arguments (i.e., using
4171 :     named arguments) for C functions that have a prototype with named
4172 :     arguments
4173 :     (see changes to CKIT)
4174 :    
4175 :     ----------------------------------------------------------------------
4176 : leunga 972 Name: Allen Leung
4177 :     Date: 2001/10/27 20:34:00 EDT
4178 :     Tag: leunga-20011027-x86-fast-fp-call
4179 :     Description:
4180 :    
4181 :     Fixed the bug described in blume-20010920-slowfp.
4182 :    
4183 :     The fix involves
4184 :     1. generating FCOPYs in FSTP in ia32-svid
4185 :     2. marking a CALL with the appropriate annotation
4186 :    
4187 :     ----------------------------------------------------------------------
4188 : blume 961 Name: Matthias Blume
4189 :     Date: 2001/10/16 11:32:00 EDT
4190 :     Tag: blume-20011016-netbsd
4191 :     Description:
4192 :    
4193 :     Underscore patch from Chris Richards (fixing problem with compiling
4194 :     runtime system under recent NetBSD).
4195 :    
4196 :     ----------------------------------------------------------------------
4197 : george 959 Name: Allen Leung
4198 :     Date: 2001/10/12 17:18:32 EDT 2001
4199 :     Tag: leung-20011012-x86-printflowgraph
4200 :     Description:
4201 :    
4202 :     X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
4203 :    
4204 :     ----------------------------------------------------------------------
4205 : george 952 Name: Lal George
4206 : george 958 Date: 2001/10/11 23:51:34 EDT
4207 :     Tag: george-20011011-too-many-instrs
4208 :     Description:
4209 :    
4210 :     The representation of a program point never expected to see more
4211 :     than 65536 instructions in a basic block!
4212 :    
4213 :     ----------------------------------------------------------------------
4214 :     Name: Lal George
4215 : george 952 Date: 2001/10/09 09:41:37 EDT
4216 :     Tag: george-20011008-mlrisc-labels
4217 :     Description:
4218 :    
4219 :     Changed the machine description files to support printing of
4220 :     local and global labels in assembly code, based on host assembler
4221 :     conventions.
4222 :    
4223 :     ----------------------------------------------------------------------
4224 : blume 916 Name: Matthias Blume
4225 : blume 939 Date: 2001/09/25 15:25:00 EDT
4226 :     Tag: blume-20010925-exninfo
4227 :     Description:
4228 :    
4229 :     I provided a non-hook implementation of exnName (at the toplevel) and
4230 :     made the "dummy" implementation of exnMessage (at the toplevel) more
4231 :     useful: if nothing gets "hooked in", then at least you are going to
4232 :     see the exception name and a message indicating why you don't see more.
4233 :    
4234 :     [For the time being, programs that need exnMessage and want to use
4235 :     ml-build should either use General.exnMessage (strongly recommended) or
4236 :     refer to structure General at some other point so that CM sees a
4237 :     static dependency.]
4238 :    
4239 :     [Similar remarks go for "print" and "use": If you want to use their
4240 :     functionality in stand-alone programs generated by ml-build, then use
4241 :     TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
4242 :    
4243 :     ----------------------------------------------------------------------
4244 :     Name: Matthias Blume
4245 : blume 938 Date: 2001/09/20 17:28:00 EDT
4246 :     Tag: blume-20010920-slowfp
4247 :     Description:
4248 :    
4249 :     Allen says that x86-fast-fp is not safe yet, so I turned it off again...
4250 :    
4251 :     ----------------------------------------------------------------------
4252 :     Name: Matthias Blume
4253 : blume 937 Date: 2001/09/20 17:20:00 EDT
4254 :     Tag: blume-20010920-canonicalpaths
4255 :     Description:
4256 :    
4257 :     0. Updated the BOOT file (something that I forgot to do earlier).
4258 :    
4259 :     1. Small internal change to CM so that it avoids "/../" in filenames
4260 :     as much as possible (but only where it is safe).
4261 :    
4262 :     2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
4263 :     that arguments that contain delimiters are passed through correctly.
4264 :     This change also means that all "special" arguments of the form
4265 :     @SMLxxx... must come first.
4266 :    
4267 :     3. Changed install script to put relative anchor names for tool commands
4268 :     into pathconfig.
4269 :    
4270 :     ----------------------------------------------------------------------
4271 :     Name: Matthias Blume
4272 : blume 932 Date: 2001/09/18 15:35:00 EDT
4273 :     Tag: blume-20010918-readme11036
4274 :     Description:
4275 :    
4276 :     Added README files.
4277 :    
4278 :     ----------------------------------------------------------------------
4279 :     Name: Matthias Blume
4280 : blume 929 Date: 2001/09/18 11:45:00 EDT
4281 :     Tag: Release_110_36 (retag)
4282 :     Description:
4283 :    
4284 :     Fixed mistake in config/preloads. Retagged as 110.36.
4285 :    
4286 :     ----------------------------------------------------------------------
4287 :     Name: Matthias Blume
4288 : blume