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Annotation of /sml/branches/primop-branch-3/NOTES/HISTORY

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Original Path: sml/trunk/HISTORY

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 1761 Date: 2005/02/25 15:00:00 CST
18 :     Tag: Release_110_53
19 :     Description:
20 :    
21 :     New working version (110.53). NEW BOOTFILES!
22 :    
23 :     ----------------------------------------------------------------------
24 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
25 : mblume 1760 Date: 2005/02/25 14:50:00 CST
26 :     Tag: blume-20050225-susp
27 :     Description:
28 :    
29 :     Brought back SMLofNJ.Susp. The underlying suspension type is the one
30 :     implemented in Core -- which means that it is the same as the one used
31 :     by the lazy extension.
32 :    
33 :     ----------------------------------------------------------------------
34 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
35 : mblume 1759 Date: 2005/02/24 16:50:00 CST
36 :     Tag: blume-20050224-cml-atom
37 :     Description:
38 :    
39 :     Simpler and at the same time more general implementation of structure
40 :     Atom in CML.
41 :    
42 :     ----------------------------------------------------------------------
43 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
44 : mblume 1758 Date: 2005/02/15 17:35:00 CST
45 :     Tag: blume-20050215-tools
46 :     Description:
47 :    
48 :     Created new "tools" directory under "src" and moved "TraceDebugProf"
49 :     there.
50 :    
51 :     ----------------------------------------------------------------------
52 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
53 : mblume 1755 Date: 2005/02/10 17:55:00 CST
54 :     Tag: blume-20050210-longlong
55 :     Description:
56 :    
57 :     Implemented "long long" arguments and results for NLFFI. (Only the
58 :     PPC/MacOS implementation is complete, the other backends still need to
59 :     be updated.)
60 :    
61 :     ----------------------------------------------------------------------
62 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
63 : mblume 1751 Date: 2005/01/24 17:40:00 CST
64 :     Tag: blume-20050124-mlyacc
65 :     Description:
66 :    
67 :     Minor cleanup in ML-Yacc rule printing mechanism. This should fix a
68 :     problem with certain "as" patterns which previously got rendered
69 :     using incorrect syntax.
70 :    
71 :     ----------------------------------------------------------------------
72 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
73 : mblume 1750 Date: 2005/01/18 12:00:00 CST
74 :     Tag: blume-20050118-profile
75 :     Description:
76 :    
77 :     Made time profiling code (interrupt handler) in runtime system aware
78 :     of new array representation.
79 :    
80 :     ----------------------------------------------------------------------
81 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
82 : mblume 1747 Date: 2005/01/14 18:00:00 CST
83 :     Tag: blume-20050114-heap2exec
84 :     Description:
85 :    
86 :     Implemented new (but still experimental) heap2exec facility. This is
87 :     tested under Mac OS X and should work under Linux (will test shortly).
88 :     It will probably also work on the Sparc (will test some time later).
89 :    
90 :     - removed old "HACKED_STANDALONE" hack from runtime
91 :    
92 :     To be able to test this, uncomment the request for "heap2asm" in
93 :     config/targets prior to installation. (Notice that this is different
94 :     from "heap2exec" mentioned below. Not a typo.)
95 :    
96 :     To perform an actual test, run the command
97 :    
98 :     $ bin/heap2exec heapfile execfile
99 :    
100 :     (You can put heap2exec on your shell's path.)
101 :    
102 :     For example, run
103 :    
104 :     $ bin/heap2exec bin/.heap/ml-yacc.ppc-darwin mly
105 :    
106 :     This will create a standalone executable called "mly" which you can
107 :     then invoke directly as a command.
108 :    
109 :     ----------------------------------------------------------------------
110 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
111 : mblume 1746 Date: 2005/01/07 11:44:00 CST
112 :     Tag: blume-20050107-mlstring
113 :     Description:
114 :    
115 :     fixed off-by-one error in ML_STRING macro (globals.c)
116 :    
117 :     ----------------------------------------------------------------------
118 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
119 : mblume 1744 Date: 2004/12/23 18:00:00 CST
120 :     Tag: blume-20041223-santa
121 :     Description:
122 :    
123 :     Made ml-build script "smarter" (but only very little).
124 :    
125 :     ----------------------------------------------------------------------
126 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
127 : mblume 1742 Date: 2004/12/21 15:05:00 CST
128 :     Tag: blume-20041221-longlong
129 :     Description:
130 :    
131 :     * Implemented access to signed and unsigned long long data in NLFFI.
132 :     (The parameter-passing part of the picture has not complete. But
133 :     data structure access seems to work.)
134 :    
135 :     * Fixed CM's incorrect assumption that the PPC is little-endian.
136 :     (On the Mac, it is big-endian. And that's currently our only
137 :     PPC platform.)
138 :    
139 :     ----------------------------------------------------------------------
140 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
141 : mblume 1741 Date: 2004/12/21 12:50:00 CST
142 :     Tag: blume-20041221-memory
143 :     Description:
144 :    
145 :     Some cleanup in the $c/memory.cm library: separated some concerns by
146 :     moving allocation code and memory access code each into their own
147 :     files.
148 :    
149 :     ----------------------------------------------------------------------
150 : allenleung 1740 Name: Allen Leung (leunga (at) reservoir (dot) com)
151 :     Date: 2004/12/17 16:12:00 EST
152 :     Tag: leunga-20041217-cygwin-smlnj-home
153 :     Description:
154 :    
155 :     The Unix I/O library of SML/NJ on cygwin does not understand
156 :     Windows style pathname, so problems arise when SMLNJ_HOME is set
157 :     to a Windows style pathname. _run-sml now converts SMLNJ_HOME
158 :     to a POSIX pathname on cygwin.
159 :    
160 :     ----------------------------------------------------------------------
161 : mblume 1737 Name: Matthias Blume (blume (at) tti - c (dot) org)
162 : mblume 1736 Date: 2004/12/16 13:35:00 CST
163 :     Tag: Release_110_52
164 :     Description:
165 :    
166 :     Last-minute changes incorporated into 110.52. Release tag moved.
167 :    
168 :     The changes:
169 :     - HashString.hashString' -> HashString.hashSubstring
170 :     - bug fix in UnivariateStats
171 :    
172 :     ----------------------------------------------------------------------
173 : mblume 1702 Name: Matthias Blume (blume (at) tti - c (dot) org)
174 : mblume 1733 Date: 2004/12/15 23:40:00 CST
175 :     Tag: blume-20041215-hashSubstring
176 :     Description:
177 :    
178 :     - HashString.hashString' -> HashString.hashSubstring
179 :     - corresponding changes in atom.sml
180 :     - "de-compressed" (aka. un-obfuscated) code for UnivariateStats and
181 :     added some comments
182 :    
183 :     ----------------------------------------------------------------------
184 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
185 : mblume 1728 Date: 2004/12/15 15:30:00 CST
186 : mblume 1736 Tag: (Release_110_52)
187 : mblume 1728 Description:
188 :    
189 :     New working version (110.52). NEW BOOTFILES!
190 :    
191 :     ----------------------------------------------------------------------
192 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
193 : mblume 1727 Date: 2004/12/15 12:45:00 CST
194 :     Tag: blume-20041215-spaces
195 :     Description:
196 :    
197 :     More on the space problem (this time for Win32).
198 :    
199 :     ----------------------------------------------------------------------
200 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
201 : mblume 1725 Date: 2004/12/14 17:30:00 CST
202 :     Tag: blume-20041214-spaces
203 :     Description:
204 :    
205 :     Hacked some of the scripts (in particular: the installer) to cope with
206 :     spaces in filenames a bit better. But beware: the current "solution"
207 :     is likely still full of bugs and inherently incomplete. (We need to
208 :     do away with those shell scripts for a comprehensive solution.)
209 :    
210 :     ----------------------------------------------------------------------
211 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
212 : mblume 1724 Date: 2004/12/13 14:45:00 CST
213 :     Tag: blume-20041213-ml-makedepend
214 :     Description:
215 :    
216 :     Fixed bug in code for ml-makedepend.
217 :    
218 :     ----------------------------------------------------------------------
219 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
220 : mblume 1720 Date: 2004/12/09 16:30:00 CST
221 :     Tag: blume-20041209-statistics
222 :     Description:
223 :    
224 :     Added two simple but potentially useful statistics modules to SML/NJ Library.
225 :     (See CHANGES file there.)
226 :    
227 :     ----------------------------------------------------------------------
228 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
229 : mblume 1718 Date: 2004/12/01 16:50:00 CST
230 :     Tag: blume-20041201-atom
231 :     Description:
232 :    
233 :     smlnj-lib:
234 :    
235 :     Added function HashString.hashString' for substrings.
236 :     Hand-inlined CharVector.foldl into HashString (for speed).
237 :     Modified implementation of structure Atom to avoid extracting
238 :     strings from substrings unless necessary.
239 :     (Also see CHANGES file for smlnj-lib.)
240 :    
241 :     ----------------------------------------------------------------------
242 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
243 : mblume 1717 Date: 2004/11/24 22:15:00 CST
244 :     Tag: blume-20041124-cml
245 :     Description:
246 :    
247 :     Made sure CML compiles when Position = Int64.
248 :    
249 :     ----------------------------------------------------------------------
250 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
251 : mblume 1715 Date: 2004/11/24 14:30:00 CST
252 :     Tag: blume-20041124-position
253 :     Description:
254 :    
255 :     The compiler can now be compiled in a mode that makes structure Position
256 :     equal to Int64. The default, however, is unchanged (Position = Int31)
257 :     for the time being.
258 :    
259 :     To enable 64-bit positions, use the following procedure:
260 :    
261 :     1. Start sml
262 :     2. Autoload $smlnj/cmb.cm (if not already autoloaded)
263 :     3. Type
264 :     #set (CMB.symval "USE_64_BIT_POSITIONS") (SOME 1);
265 :     4. Run CMB.make() as usual.
266 :    
267 :     This is barely tested. The only test so far was a little SML program
268 :     counting the number of characters in an 8-gigabyte file by
269 :     reading it character-by-character. That test was successful.
270 :    
271 :     In support of 64-bit positions, a number of new functions have been
272 :     added to the runtime system.
273 :    
274 :     ----------------------------------------------------------------------
275 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
276 : mblume 1716 Date: 2004/11/23 14:45:00 CST
277 :     Tag: blume-20041123-useFile
278 : mblume 1712 Description:
279 :    
280 :     Fixed a problem with unhelpful error messages related to problems with
281 :     .cm- or .sml files that appear as part of the sml command line.
282 :    
283 :     ----------------------------------------------------------------------
284 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
285 : mblume 1703 Date: 2004/11/18 15:40:00 CST
286 :     Tag: Release_110_51
287 :     Description:
288 :    
289 :     New working version (110.51). NEW BOOTFILES!
290 :    
291 :     ----------------------------------------------------------------------
292 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
293 : mblume 1702 Date: 2004/11/18 15:35:00 CST
294 :     Tag: <none>
295 :     Description:
296 :    
297 :     Enabled dlopen and friends for FreeBSD (as recommended by Johannes 5
298 :     Joemann).
299 :    
300 :     ----------------------------------------------------------------------
301 : allenleung 1701 Name: Allen Leung (leunga (at) reservoir (dot) com)
302 :     Date: 2004/11/17 16:05:21 EST 2004
303 :     Tag: leunga-20041117-mlrisc-live-kill
304 :     Description:
305 :    
306 :     Added support for MLTree constructs LIVE and KILL
307 :     to all the architectures.
308 :    
309 :     ----------------------------------------------------------------------
310 : mblume 1687 Name: Matthias Blume (blume (at) tti - c (dot) org)
311 : mblume 1689 Date: 2004/11/13 00:20:00 CST
312 :     Tag: blume-20041113-versiontool
313 :     Description:
314 :    
315 :     - Stripped down the versiontool: It now only handles the version number.
316 :     The date string is generated at bootstrap time (during makeml).
317 :    
318 :     - In a previous commit, fixed a minor issue with how polyequal is being
319 :     translated. In particular, the code now "looks through" abstractions.
320 :     This results in slightly fewer polyEqual warnings and hopefully slightly
321 :     more efficient code. Important examples for where this matters are
322 :     the new int64 and word64 types.
323 :    
324 :     ----------------------------------------------------------------------
325 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
326 : mblume 1687 Date: 2004/11/12 00:30:00 CST
327 :     Tag: blume-20041112-int64
328 :     Description:
329 :    
330 :     Structure Int64 fully hooked in. (The implementation is not very
331 :     efficient, though.)
332 :    
333 :     ----------------------------------------------------------------------
334 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
335 : mblume 1686 Date: 2004/11/11 17:30:00 CST
336 :     Tag: blume-20041111-more64
337 :     Description:
338 :    
339 :     All the pieces of Word64 are now there, with the exception of the
340 :     conversions from and to LargeWord. (Eventually these need to be identities,
341 :     but for the time being they don't even make sense because LargeWord is
342 :     32-bit wide.)
343 :    
344 :     Also started to add similar support for Int64, but major pieces of that
345 :     are still missing.
346 :    
347 :     ----------------------------------------------------------------------
348 : mblume 1668 Name: Matthias Blume (blume (at) tti - c (dot) org)
349 : mblume 1684 Date: 2004/11/11 00:15:00 CST
350 :     Tag: blume-20041111-word64
351 :     Description:
352 :    
353 :     Structure Word64 is now (almost) complete, word literals and patterns
354 :     seem to work. There are a few odd pieces missing. In particular,
355 :     I didn't do the {from,to}LargeWord parts because LargeWord is still Word32
356 :     at the moment.
357 :    
358 :     Making Word64 official would mean that LargeWord becomes Word64. But
359 :     this requires extreme care because most word-word conversions have to
360 :     go through LargeWord, so making a mistake means loss of efficiency or
361 :     worse. Eventually there will be a solution similar to (but actually
362 :     simpler than) what I did with IntInf.
363 :    
364 :     ----------------------------------------------------------------------
365 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
366 : mblume 1683 Date: 2004/11/10 18:12:00 CST
367 :     Tag: blume-20041110-64bit
368 :     Description:
369 :    
370 :     More 64-bit hacking (but still not even half-way there yet).
371 :     Also, some assorted improvements to the handling of 8-bit words.
372 :    
373 :     ----------------------------------------------------------------------
374 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
375 : mblume 1682 Date: 2004/11/09 17:50:00 CST
376 : mblume 1683 Tag: <none>
377 : mblume 1682 Description:
378 :    
379 :     Started adding some infrastructure for supporting 64-bit int- and
380 :     word-types. (Still in its very early stages.)
381 :    
382 :     ----------------------------------------------------------------------
383 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
384 : mblume 1672 Date: 2004/10/28 10:45:00 CDT
385 :     Tag: Release_110_50
386 :     Description:
387 :    
388 :     New working version (110.50). NEW BOOTFILES!
389 :    
390 :     =====================
391 :    
392 :     Also:
393 :    
394 :     - Changend config/srcarchiveurl from a file just
395 :     containing the URL string into a file containing
396 :     shell script code. The code has access to the $VERSION variable.
397 :     - Made corresponding changes to config/install.sh and config/unpack.
398 :     - Default contents of config/srcarchiveurl uses $VERSION and
399 :     normally does not have to be edited to reflect a version change.
400 :    
401 :     (As a result, a version change can be done by just editing
402 :     config/version, the rest is now automatic.)
403 :    
404 :     ----------------------------------------------------------------------
405 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
406 : mblume 1669 Date: 2004/10/27 17:50:00 CDT
407 :     Tag: blume-20041027-btrace-msg
408 :     Description:
409 :    
410 :     BackTrace.monitor now also reports the source of the exception that
411 :     triggered the trace.
412 :    
413 :     ----------------------------------------------------------------------
414 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
415 : mblume 1668 Date: 2004/10/27 17:20:00 CDT
416 :     Tag: blume-20041027-x86-c-calls
417 :     Description:
418 :    
419 :     This is the HISTORY entry for two earlier commits, both concerning
420 :     the x86 c-calls code in MLRISC:
421 :    
422 :     - added a missing LOAD in the code that deals with struct arguments
423 :     - made sure the caller does not add the wrong number of bytes to the
424 :     stack pointer after a call of a function returning a struct
425 :     (the callee already pops the implicit argument which points to
426 :     the space reserved for the result)
427 :    
428 :     ----------------------------------------------------------------------
429 : allenleung 1662 Name: Allen Leung (leunga (at) reservoir (dot) com)
430 :     Date: 2004/10/24 14:00:00 EST
431 :     Tag: leunga-20041024-x86-gas-fucomip
432 :     Description:
433 :    
434 :     John discovered a bug in the syntax of fucomip.
435 :     The opcodes FU?COMIP? have been changed to
436 :    
437 :     fu?comip? %st(i), %st
438 :    
439 :     ----------------------------------------------------------------------
440 : mblume 1622 Name: Matthias Blume (blume (at) tti - c (dot) org)
441 : mblume 1656 Date: 2004/10/20 15:06:00 CDT
442 :     Tag: blume-20041020-standalone-backtrace
443 :     Description:
444 :    
445 :     Added a mechanism for getting back-trace information from standalone
446 :     programs. Here is how it works:
447 :    
448 :     1. The part of the program from which you want to get backtrace
449 :     information (usually the whole program) should be wrapped with
450 :     BackTrace.monitor. This is a (unit->'a)->'a function, and your
451 :     main program could be modified from something like
452 :    
453 :     fun main (pgm, args) = ...
454 :    
455 :     to
456 :    
457 :     fun main (pgm, args) = BackTrace.monitor (fn () => ...)
458 :    
459 :     2. To be able to access BackTrace.monitor, you have to add
460 :     library $smlnj-tdp/plugins.cm to the .cm file that contains your
461 :     main function.
462 :    
463 :     3. Remove all compiled code (i.e., all the .cm/ subdirectories that
464 :     CM might have created in the past for your project).
465 :    
466 :     4. Build the system using this command line:
467 :    
468 :     ml-build -Ctdp.instrument=true \$smlnj-tdp/back-trace.cm \
469 :     myprog.cm MyProg.main myprog
470 :    
471 :     instead of the usual
472 :    
473 :     ml-build myprog.cm MyProg.main myprog
474 :    
475 :     I changed a library name:
476 :    
477 :     $/trace-debug-profile.cm --> $smlnj-tdp/plugins.cm
478 :    
479 :     New libraries:
480 :    
481 :     $smlnj-tdp/back-trace.cm
482 :     -- when loaded causes the back-trace plugin to be installed
483 :     $smlnj-tdp/coverage.cm
484 :     -- when loaded causes the coverage plugin to be installed
485 :    
486 :     ----------------------------------------------------------------------
487 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
488 : mblume 1655 Date: 2004/10/18 16:45:00 CDT
489 :     Tag: blume-20041018-groupowner
490 :     Description:
491 :    
492 :     Added an "obsolete" warning for the "group owner" syntax to CM's parser.
493 :    
494 :     Eliminated group owner specs from .cm files throughout the source tree.
495 :    
496 :     ----------------------------------------------------------------------
497 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
498 : mblume 1653 Date: 2004/10/15 15:45:00 CDT
499 :     Tag: blume-20041015-coverage
500 :     Description:
501 :    
502 :     * Test coverage tool added!
503 :     * Further reorganization of tracing-, debugging-, and profiling support:
504 :    
505 :     - moved original BTImp -- now called BackTrace -- into a separate
506 :     library called $/trace-debug-profile.cm
507 :     - eliminated all mentions of BTrace from SMLofNJ.Internals
508 :     - only the instrumentation mechanism is now left in the compiler proper
509 :     - BackTrace module is a plugin which is NOT plugged in by default
510 :     - Coverage module is another such plugin
511 :    
512 :     To get the benefits of any of these plugin modules, the code in
513 :     question must be compiled with tdp instrumentation turned on. This
514 :     can be done by setting SMLofNJ.Internals.TDP.mode to true.
515 :     (The ref cell is also controlled via the -Ctdp.instrument=... switch.)
516 :    
517 :     Plugins are selected at link time. (Pre-compiled instrumented code
518 :     can be re-loaded with different plugins in effect.) When an
519 :     instrumented module is linked, whatever plugins are at that time
520 :     enabled will come into effect for that module.
521 :    
522 :     To enable the back-trace plugin, load library $/trace-debug-profile.cm
523 :     and invoke BackTrace.install() (e.g., from the interactive prompt).
524 :     To enable the coverage plugin, load the same library and invoke
525 :     Coverage.install().
526 :    
527 :     Back-traces are generated automatically on uncaught exceptions and
528 :     when the code in question explicitly invokes BackTrace.trigger().
529 :    
530 :     Coverage (and execution frequency-) information must be queried
531 :     explicitly by calling Coverage.not_covered and Coverage.hot_spots.
532 :    
533 :     ----------------------------------------------------------------------
534 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
535 : mblume 1652 Date: 2004/10/14 17:40:00 CDT
536 :     Tag: blume-20041014-tdp-core
537 :     Description:
538 :    
539 :     Snapshot of a significant overhaul of how the trace/debug/profile support
540 :     is hooked into the system (specifically: Core and SMLofNJ.Internals).
541 :    
542 :     ----------------------------------------------------------------------
543 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
544 : mblume 1650 Date: 2004/10/13 16:34:00 CDT
545 :     Tag: blume-20041013-tdp
546 :     Description:
547 :    
548 :     Some rationalization of names:
549 :    
550 :     structure BTrace -> structure TDPInstrument
551 :     etc.
552 :    
553 :     This is is preparation of using the original back-trace
554 :     instrumentation for other purposes. "TDP" stands for
555 :     Trace/Debug/Profile.
556 :    
557 :     The control flag controlling whether instrumentation is on or off is now
558 :     registered under a different name, so instead of running sml as
559 :    
560 :     sml -Cinstrument.btrace-mode=true
561 :    
562 :     one has to say
563 :    
564 :     sml -Ctdp.instrument=true
565 :    
566 :     ----------------------------------------------------------------------
567 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
568 : mblume 1645 Date: 2004/10/11 16:37:00 CDT
569 :     Tag: blume-20041011-regions
570 :     Description:
571 :    
572 :     Made some minor modifications to elabcore.sml to have source regions
573 :     be propagated more tightly -- resulting in better (i.e., smaller)
574 :     regions being reported in error- and debug messages.
575 :    
576 :     ----------------------------------------------------------------------
577 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
578 : mblume 1644 Date: 2004/10/08 22:50:00 CDT
579 :     Tag: blume-20041008-cmkw
580 :     Description:
581 :    
582 :     Fixed handling of keywords in .cm files: After seeing "is" the lexer
583 :     treats subsequent occurrences of "group", "library", "source", "is",
584 :     "*", and "-" as ordinary identifiers rather than keywords.
585 :    
586 :     Most seriously, this fixes a problem with CM's "shell" tool. The tool
587 :     is supposed to accept a tool argument called "source", but this did
588 :     not work because of the clash with the keyword.
589 :    
590 :     ----------------------------------------------------------------------
591 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
592 : mblume 1642 Date: 2004/10/07 16:00:00 CDT
593 :     Tag: blume-20041007-cleanup
594 :     Description:
595 :    
596 :     Assorted cleanup work:
597 :    
598 :     - got rid of intstrmap in favor of using the library's
599 :     hash table implementation
600 :     - threw out most of the pathnames stuff, as it was not used anyway
601 :     - simplified tokentable implementation
602 :     - fixed some minor spelling errors
603 :    
604 :     ----------------------------------------------------------------------
605 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
606 : mblume 1641 Date: 2004/10/06 15:15:15 CDT
607 :     Tag: blume-20041006-handler
608 :     Description:
609 :    
610 :     Cleaned up the absyn to reflect the invariant that HANDLE always
611 :     carries a FNexp as part of the type definition. This eliminates some
612 :     superfluous sanity checks at runtime down the road.
613 :    
614 :     Some minor cleanup of the btrace code.
615 :    
616 :     ----------------------------------------------------------------------
617 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
618 : mblume 1640 Date: 2004/10/01 10:20:30 CDT
619 :     Tag: blume-20041001-slave
620 :     Description:
621 :    
622 :     Added hack to make slave mode work in the presence of the version
623 :     tool. (Still, since the master does two passes over the code for
624 :     CMB.make, the release number gets bumped twice when slaves are
625 :     attached. I don't know if this is worth fixing...)
626 :    
627 :     ----------------------------------------------------------------------
628 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
629 : mblume 1639 Date: 2004/09/30 10:55:00 CDT
630 :     Tag: blume-20040930-version
631 :     Description:
632 :    
633 :     * Moved the "version" magic into its own little library under
634 : mblume 1672 src/system/smlnj/internal. This avoids expensive reconstruction of
635 :     a stable src/compiler/core.cm.
636 : mblume 1639
637 : mblume 1672 * At the same time, structure CompilerVersion is now known as
638 :     structure SMLNJVersion.
639 : mblume 1639
640 :     * Arranged for the version tool to NOT kick in when rebuilding the system
641 :     (makeml -rebuild, fixpt). Otherwise one would never reach a fixpoint.
642 :     Also, loading the versiontool does not work when rebuilding the system
643 :     because CM is not properly initialized at that time.
644 :    
645 :     ----------------------------------------------------------------------
646 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
647 : mblume 1638 Date: 2004/09/29 14:00:00 CDT
648 :     Tag: blume-20040929-autoversion
649 :     Description:
650 :    
651 :     Implemented some CM magic to have
652 :     file src/compiler/TopLevel/main/version.sml
653 :     generated automagically.
654 :     The version is taken from two files: config/version and config/release.
655 :     The first is expected to contain a two-part version number such as 110.49.
656 :     The second should contain a single number, but it may be missing.
657 :    
658 :     If the environment variable VERSIONTOOL_BUMP_RELEASE is defined at the
659 :     time the version tool is loaded (which is the first time you say CMB.make),
660 :     then the tool will increment the value stored in config/release every
661 :     time CMB.make is invoked.
662 :    
663 :     The binfile format is now insensitive to anything beyond the first
664 :     two components of a version number, so bumping the release does not render
665 :     binfiles incompatible. Auto-bumping can be used to keep track of versions
666 :     during development without invalidating existing binfiles.
667 :    
668 :     In any case, every CMB.make updates the date information in version.sml.
669 :     (This is the date that is printed in the banner.)
670 :    
671 :     ----------------------------------------------------------------------
672 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
673 : mblume 1634 Date: 2004/09/28 10:53:00 CDT
674 :     Tag: blume-20040928-controls
675 :     Description:
676 :    
677 :     Some cleanup of the controls code.
678 :    
679 :     ----------------------------------------------------------------------
680 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
681 : mblume 1633 Date: 2004/09/27 22:08:00 CDT
682 :     Tag: blume-20040927-controls
683 :     Description:
684 :    
685 :     Added two pieces of functionality to the Controls interface:
686 :    
687 :     1. val save'restore: 'a control -> unit -> unit
688 :    
689 :     grabs the current value of the control in stage 1 and restores it
690 :     in stage 2.
691 :    
692 :     2. val set' : 'a control * 'a -> unit -> unit
693 :    
694 :     stores the given value into the control in stage 2 (i.e., delayed)
695 :     but does all error checking in stage 1.
696 :     (This is for string controls that need to do parse their argument --
697 :     something that might fail. In some cases, notably in CM, one
698 :     already knows the intended argument but wants to delay the actual
699 :     assignment until a time when error recovery would be more difficult.)
700 :    
701 :     Changed the handling of controls in tool arguments to classes "sml" and
702 :     "lazysml":
703 :     - use Controls.save'restore as a more robust way of restoring the
704 :     old value (in particular: without having to re-parse the string)
705 :     - use controls to handle the "overload" keyword in the init group
706 :     (I believe this change actually fixes a long-standing obscure bug.)
707 :    
708 :     ----------------------------------------------------------------------
709 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
710 : mblume 1632 Date: 2004/09/27 17:00:00 CDT
711 :     Tag: blume-20040927-lazysml
712 :     Description:
713 :    
714 :     Added a new tool class called "lazysml" to CM's tool chest. The only
715 :     difference to "sml" is that compilation is done with Control.lazysml
716 :     set to true. A source of class "lazysml" is automatically recognized
717 :     by a file name suffix of ".lml".
718 :    
719 :     In addition to the above feature, the original class "sml" now also
720 :     supports a tool argument "lazy" which has the same effect. As a
721 :     result, the following three lines are equivalent:
722 :    
723 :     foo.sml : lazysml
724 :     foo.sml : sml (lazy)
725 :     foo.sml (lazy)
726 :    
727 :     The setting goes into effect both during parsing and during
728 :     compilation. The original setting is restored right after parsing and
729 :     after compilation, respectively.
730 :    
731 :     In addition to all the above, there is also a general mechanism to set
732 :     ANY of the "controls" that are available at the command line via
733 :     "-C..." on a per-sml-file basis. The same rules that apply for "lazy"
734 :     apply as well. (In fact, "lazy" is implemented as a special case of
735 :     the general mechanism.)
736 :    
737 :     The .cm file syntax uses a new keyword tool argument called "with".
738 :     There are several ways of indicating the desired settings:
739 :    
740 :     foo.sml (with:parser.quotations=true)
741 :     foo.sml (with:(name:parser.quotations value:true))
742 :     foo.sml (with:(name:name1 value:value1 name:name2 value:value2 ...))
743 :     foo.sml (with:(name1=value1 name2=value2 ...))
744 :     foo.sml (with:(name1=value1 name:name2 value:value2 name3=value3 ...))
745 :    
746 :     etc.
747 :    
748 :     Another possible abbreviation is to leave out the =v or value:v part
749 :     if the name refers to a boolean control (in which case the value is
750 :     taken to be true). Thus, one could get lazy sml also by saying:
751 :    
752 :     foo.sml (with:parser.lazy-keyword=true)
753 :     foo.sml (with:parser.lazy-keyword)
754 :     foo.sml (with:(name:parser.lazy-keyword value:true))
755 :     foo.sml (with:(name:parser.lazy-keyword))
756 :    
757 :     ----------------------------------------------------------------------
758 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
759 : mblume 1631 Date: 2004/09/24 16:22:00 CDT
760 :     Tag: blume-20040924-ppc-long-branch
761 :     Description:
762 :    
763 :     Turned message about "emiting long form of branch" off by default.
764 :     Added a control flag to turn it back on when desired.
765 :    
766 :     ----------------------------------------------------------------------
767 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
768 : mblume 1630 Date: 2004/09/24 16:05:00 CDT
769 :     Tag: blume-20040924-rounding
770 :     Description:
771 :    
772 :     Applied patch for setting rounding modes under Mac OS X. Thanks to
773 :     Melissa O'Neill for providing the code!
774 :    
775 :     ----------------------------------------------------------------------
776 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
777 : mblume 1629 Date: 2004/09/23 17:30:00 CDT
778 :     Tag: blume-20040923-envvars
779 :     Description:
780 :    
781 :     1. Changed definition of type ControlRegistry.registry_tree to
782 :     include control_info (i.e., the name of the controlling environment
783 :     variable).
784 :    
785 :     2. Added command-line flags -e and -E to print the names of environment
786 :     variables that can be used to control internal settings.
787 :     (This uses the new API mentioned in 1.)
788 :    
789 :     ----------------------------------------------------------------------
790 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
791 : mblume 1622 Date: 2004/09/13 16:50:00 CDT
792 :     Tag: Release_110_49
793 :     Description:
794 :    
795 :     New working version (110.49). NEW BOOTFILES!
796 :    
797 :     ----------------------------------------------------------------------
798 : mblume 1621 Name: Matthias Blume
799 :     Date: 2004/09/13 16:20:00 CDT
800 :     Tag: blume-20040913-config-mlrisc
801 :     Description:
802 :    
803 :     Put target "mlrisc" back into the default list.
804 :     (There is no harm in having it, and some users have expressed their
805 :     wish to have "mlrisc" included by default.)
806 :    
807 :     ----------------------------------------------------------------------
808 : jhr 1620 Name: John Reppy
809 :     Date: 2004/09/13
810 :     Tag: jhr-20040913-signals
811 :     Description:
812 :    
813 :     Fixed the signal masking code to properly nest mask/unmask operations
814 :     on a per-signal basis.
815 :    
816 :     ----------------------------------------------------------------------
817 : mblume 1619 Name: Matthias Blume (blume (at) tti - c (dot) org)
818 :     Date: 2004/09/08 13:20:00 CDT
819 :     Tag: blume-20040908-heap-magic
820 :     Description:
821 :    
822 :     Bumped the heap macig number to 0x09082004 to account for the changed
823 :     layout of the ML frame under MacOS X.
824 :    
825 :     ----------------------------------------------------------------------
826 : allenleung 1618 Name: Allen Leung (leunga (at) reservoir (dot) com)
827 :     Date: 2004/09/03 11:26:00 EST
828 :     Tag: leunga-20040903-cygwin-install
829 :     Description:
830 :    
831 :     Added a patch to _arch-n-opsys to enable the Cygwin runtime.
832 :     The Cygwin runtime is turned on by setting the environment
833 :     variable SMLNJ_CYGWIN_RUNTIME to 1.
834 :    
835 :     ----------------------------------------------------------------------
836 : mblume 1615 Name: Matthias Blume (blume (at) tti - c (dot) org)
837 : mblume 1617 Date: 2004/08/31 17:15:00 CDT
838 :     Tag: blume-20040831-core
839 :     Description:
840 :    
841 :     Added some exports to src/compiler/core.cm upon request by J. Joemann.
842 :    
843 :     ----------------------------------------------------------------------
844 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
845 : mblume 1616 Date: 2004/08/30 17:55:00 CDT
846 :     Tag: blume-20040830-installer
847 :     Description:
848 :    
849 :     Upon request by Johannes Joemann:
850 :    
851 :     - improved ML code of installer to fall back to coping when renaming
852 :     fails (i.e., when source and target are on different file systems);
853 :     the code compiles but has yet to be tested in anger
854 :     - removed mlrisc from list of default targets (config/targets)
855 :    
856 :     ----------------------------------------------------------------------
857 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
858 : mblume 1615 Date: 2004/08/27 17:20:00 CDT
859 :     Tag: blume-20040827-ptreql
860 :     Description:
861 :    
862 :     Added ptreql primop to structure InlineT (upon request from Larry
863 :     Paulson).
864 :    
865 :     ----------------------------------------------------------------------
866 : allenleung 1613 Name: Allen Leung (leunga (at) reservoir (dot) com)
867 : allenleung 1614 Date: 2004/08/15 21:21:00 EST
868 :     Tag: leunga-110_48-udgraph
869 :     Description:
870 :    
871 :     Another bug fix from Carl Hauser:
872 :    
873 :     diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml
874 :     > 48c48
875 :     > < | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else
876 :     > e::L)
877 :     > ---
878 :     > > | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L)
879 :     > Without this, any deletion of an edge in an undirected graph does severe
880 :     > violence to the graph.
881 :    
882 :     ----------------------------------------------------------------------
883 :     Name: Allen Leung (leunga (at) reservoir (dot) com)
884 : allenleung 1613 Date: 2004/08/10 23:35:00 EST
885 :     Tag: leunga-110_48-ppc
886 :     Description:
887 :    
888 :     The IBM/MacOS syntax switch on PPC was incorrectly swapped.
889 :    
890 :     ----------------------------------------------------------------------
891 : mblume 1602 Name: Matthias Blume (blume (at) tti - c (dot) org)
892 : mblume 1615 Date: 2004/08/10 12:00:00 CDT
893 : mblume 1602 Tag: Release_110_48
894 :     Description:
895 :    
896 :     New working version (110.48). NEW BOOTFILES!
897 :    
898 :     ----------------------------------------------------------------------
899 : allenleung 1599 Name: Allen Leung (leunga (at) reservoir (dot) com)
900 :     Date: 2004/08/09 12:21:00 EST
901 :     Tag: leunga-110_47-dijsktra
902 :     Description:
903 :    
904 :     Bug fix from Carl Hauser:
905 :    
906 :     single_source_shortest_paths in dijkstra.sml was observed to get wrong
907 :     answers (by comparing to single_source_shortest_paths in bellman-ford.sml).
908 :    
909 :     The problem is that following the expression A.update(dist,s,Num.zero)
910 :     it is necessary to update the priority queue using Q.decreaseWeight(Q,s).
911 :    
912 :     ----------------------------------------------------------------------
913 : mblume 1595 Name: Matthias Blume (blume (at) tti - c (dot) org)
914 :     Date: 2004/08/06 18:10:00 CDT
915 :     Tag: blume-20040806-cmdline
916 :     Description:
917 :    
918 :     Fiddled with handling of command-line options:
919 :    
920 :     * sml now quits after processing the command line
921 :     if -H, -S, -h<n>, or -s<n> appears as the last
922 :     command-line argument
923 :     * a new option -q terminates the session when encountered on
924 :     the command line; subsequent arguments will be ignored
925 :     * bug fixes: short (erroneous) arguments are no longer ignored
926 :     completely
927 :    
928 :     ----------------------------------------------------------------------
929 : allenleung 1593 Name: Allen Leung (leunga (at) reservoir (dot) com)
930 :     Date: 2004/08/04 18:17:00 EST
931 :     Tag: leunga-110_47-ppc-ibm-asm
932 :     Description:
933 :    
934 :     - Added minimal IBM assembly syntax support for PowerPC.
935 :    
936 :     - Cygwin: manually changed the file cygwin.def. Some exported symbols have
937 :     been altered in the runtime. We need an automatic way to keep the file
938 :     in sync.
939 :    
940 :     ----------------------------------------------------------------------
941 : mblume 1548 Name: Matthias Blume (blume (at) tti - c (dot) org)
942 : mblume 1581 Date: 2004/08/04 14:00:00 CDT
943 :     Tag: Release_110_47
944 :     Description:
945 :    
946 :     New working version (110.47). NEW BOOTFILES!
947 :    
948 :     ----------------------------------------------------------------------
949 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
950 : mblume 1580 Date: 2004/08/03 14:25:00 CDT
951 :     Tag: blume-20040803-callingconv
952 :     Description:
953 :    
954 :     Added low-level support for choosing C calling conventions by
955 :     twiddling the type of rawccall. (See
956 :     src/compiler/Semant/types/cproto.sml for details.)
957 :    
958 :     ----------------------------------------------------------------------
959 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
960 : mblume 1579 Date: 2004/08/02 15:55:00 CDT
961 :     Tag: blume-20040802-backout
962 :     Description:
963 :    
964 :     Backed out of change to win32-filesys.c. The earlier patch to
965 :     get_file_time caused CM to produce files with the wrong time stamp.
966 :    
967 :     ----------------------------------------------------------------------
968 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
969 : mblume 1573 Date: 2004/08/02 14:45:00 CDT
970 :     Tag: blume-20040802-nlffi-win32
971 :     Description:
972 :    
973 :     Added NLFFI support for Win32, adapted from a patch provided by David
974 :     Hansel. This is currently completely untested. Also, the issue
975 :     concerning stdcall vs. ccall is still unresolved.
976 :    
977 :     ----------------------------------------------------------------------
978 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
979 : mblume 1572 Date: 2004/07/30 17:55:00 CDT
980 :     Tag: blume-20040730-various
981 :     Description:
982 :    
983 :     Gearing up towards 110.47...
984 :    
985 :     - various minor bugfixes to ml-nlffigen
986 :     - a beginning of a manual for nlffi
987 :    
988 :     - eliminated 'export name=value' in config/install.sh as this does
989 :     not work with certain versions of /bin/sh
990 :     (Thanks to David King at Motorola for catching this.)
991 :    
992 :     - several bugfixes provided or suggested by David Hansel at Reactive Systems:
993 :     - added a test for tm==NULL to gmtime.c and localtime.c
994 :     - applied patch for incorrect GetFileTime under win32
995 :     - toSeconds -> toMilliseconds in Win32/win32-process.sml
996 :    
997 :     ----------------------------------------------------------------------
998 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
999 : mblume 1557 Date: 2004/07/21 18:20:00 CDT
1000 :     Tag: blume-20040721-nlffigen
1001 :     Description:
1002 :    
1003 :     - Fixed minor issue in ml-nlffigen: Now generate structure T_foo
1004 :     for a typedef to an incomplete type, but leave out the "typ" member.
1005 :     (This is just for consistency.)
1006 :     - Started to produce what is supposed to become better (i.e., comprehensive)
1007 :     documentation of what ml-nlffigen does and produces.
1008 :    
1009 :     ----------------------------------------------------------------------
1010 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1011 : mblume 1548 Date: 2004/07/14 16:25:00 CDT
1012 :     Tag: blume-20040714-union
1013 :     Description:
1014 :    
1015 :     Added C_UNION to c-calls/c-types.sml and updated the machinery
1016 :     (ml-nlffigen, cproto.sml) that conveys C function interface
1017 :     information to the code generator.
1018 :    
1019 :     However, the actual architecture-specific implementation of function
1020 :     arguments and results that are C unions is still not implemented.
1021 :    
1022 :     ----------------------------------------------------------------------
1023 : allenleung 1539 Name: Allen Leung (leunga (at) reservoir (dot) com)
1024 : allenleung 1546 Date: 2004/07/14 14:38:00 EST
1025 :     Tag: leunga-110_46_1-ppc-lwzu
1026 :     Description:
1027 :    
1028 :     Added these instructions to the PowerPC architecture:
1029 :     LBZU(X), LHZU(X), LWZU(X),
1030 :     STWU(X), STFDU, STFSU
1031 :    
1032 :     etc...
1033 :    
1034 :     Note: I haven't added their instruction encoding into the description.
1035 :    
1036 :     ----------------------------------------------------------------------
1037 :     Name: Allen Leung (leunga (at) reservoir (dot) com)
1038 : allenleung 1539 Date: 2004/07/13 15:04:00 EST
1039 :     Tag: leunga-110_46_1-ppc-lwarx
1040 :     Description:
1041 :    
1042 :     Added the two instructions LWARX and STWCX to the PowerPC
1043 :     instruction set.
1044 :    
1045 :     A (untested) rewrite of loop-structure.sml. The old version
1046 :     is completely broken.
1047 :    
1048 :     ----------------------------------------------------------------------
1049 : mblume 1479 Name: Matthias Blume (blume (at) tti - c (dot) org)
1050 : mblume 1537 Date: 2004/07/13 13:50:00 CDT
1051 :     Tag: blume-20040713-nlffi
1052 :     Description:
1053 :    
1054 :     - use paramAlloc to report c-calls with too many arguments
1055 :     (for PPC version where parameter area is pre-allocated)
1056 :     - added ccall_maxargspace to machspec (to implement the above)
1057 :     - made "make" commend in CM's "make" tool configurable
1058 :     - added option (default: on) for passing the name of the SML/NJ's "bin"
1059 :     directory to "make"; the call looks like this:
1060 :    
1061 :     make <options> SMLNJ_BINDIR=<dir> <target>
1062 :    
1063 :     This can be used by the Makefile to, e.g., pick the "right" version
1064 :     of ml-nlffigen.
1065 :     - minor code tweaks
1066 :    
1067 :     ----------------------------------------------------------------------
1068 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1069 : mblume 1532 Date: 2004/07/12 22:50:00 CDT
1070 :     Tag: blume-110_46_1-macosx-nlffi
1071 :     Description:
1072 :    
1073 :     NLFFI under Mac OS X now working (sort of). This is largely untested,
1074 :     though.
1075 :    
1076 :     Note: 1. You have to make a new, clean build of the runtime system.
1077 :     2. There are new BOOTFILES, you have to use them!
1078 :     (Doing the bootstrap process yourself would be *very* painful!
1079 :     If you absolutely have to do it, build the system under
1080 :     a different architecture and then cross-compile.)
1081 :    
1082 :     Version bumped to 110.46.1 to account for runtime data format changes.
1083 :    
1084 :     ----------------------------------------------------------------------
1085 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1086 : mblume 1515 Date: 2004/06/18 14:30:00 CDT
1087 :     Tag: blume-20040618-unix
1088 :     Description:
1089 :    
1090 :     Changed the implementation of structure Unix so that the same stream
1091 :     is returned every time one of the {text,bin}{In,Out}streamOf functions
1092 :     is invoked on the same proc. This is not what the spec currently
1093 :     says -- although IMO it arguably should. (See discussion below.)
1094 :    
1095 :     ----------------------------------------------------------------------
1096 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1097 : mblume 1507 Date: 2004/06/17 18:15:00 CDT
1098 :     Tag: Release_110_46
1099 :     Description:
1100 :    
1101 :     New working version (110.46). NEW BOOTFILES!
1102 :    
1103 :     ----------------------------------------------------------------------
1104 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1105 : mblume 1506 Date: 2004/06/17 17:20:00 CDT
1106 :     Tag: blume-20040617-timer-unix
1107 :     Description:
1108 :    
1109 :     Changed the interface of structures Timer and Unix to match the most
1110 :     recent Basis spec.
1111 :    
1112 :     In the case of Unix there still seems to be an open/weird issue:
1113 :    
1114 :     The {text,bin}{In,Out}streamOf functions are supposed to create
1115 :     fresh streams whenever they are called -- as opposed to have them
1116 :     return the same stream every time. This design is supposed to
1117 :     prevent space leaks caused by proc values hanging on to streams.
1118 :    
1119 :     The reap function, on the other hand, is supposed to close the
1120 :     streams. This cannot be done without having a handle on the
1121 :     stream in proc after all...
1122 :    
1123 :     I took the liberty to implement the following stopgap solution:
1124 :    
1125 :     The proc value hangs on to the most recently created stream(s).
1126 :     Reap closes those. If either or both of the two streams hadn't
1127 :     been created at all yet, then reap will close the corresponding
1128 :     file descriptors directly.
1129 :    
1130 :     PS: I don't understand the original space leak argument anymore. If
1131 :     a proc hangs on to the imperative stream, then I/O operations on those
1132 :     will advance the state of the cached stream and avoid the space leak.
1133 :    
1134 :     ----------------------------------------------------------------------
1135 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1136 : mblume 1500 Date: 2004/05/28 16:45:00 CDT
1137 :     Tag: blume-20040528-basis
1138 :     Description:
1139 :    
1140 :     Added signature PACK_REAL and exported functor PrimIO.
1141 :    
1142 :     ----------------------------------------------------------------------
1143 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1144 : mblume 1498 Date: 2004/05/25 16:00:00 CDT
1145 :     Tag: blume-20040525-group-owner
1146 :     Description:
1147 :    
1148 :     CM now ignores (but still accepts) the "owner" information in group
1149 :     descriptions. The owner of a group is its next enclosing
1150 :     library. Each group must have a unique owner. (There is a virtual
1151 : mblume 1505 "toplevel" library that owns groups which are not nested within a real
1152 : mblume 1498 library.) Previously, each group had to explicitly declare its owner,
1153 :     and CM would check that such a declaration is correct. The new scheme
1154 :     is to have CM check that for each group there is precisely one owning
1155 :     library.
1156 :    
1157 :     The advantage of the new scheme is that the programmer no longer needs
1158 :     to maintain the somewhat annoying owner information. The downside is
1159 :     that CM cannot enforce the ownership rule across multiple runs of
1160 :     CM.make. Fortunately, enclosing the same group in two different
1161 :     libraries A and B which are not part of the same program does not
1162 :     cause real problems.
1163 :    
1164 :     ----------------------------------------------------------------------
1165 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1166 : mblume 1496 Date: 2004/05/20 16:00:00 CDT
1167 :     Tag: blume-20040520-win32
1168 :     Description:
1169 :    
1170 :     Made the win32 version work again. (Strangely, a misplaced comma had
1171 :     slipped into win32-process.c which prevented the runtime from being
1172 :     compiled correctly.)
1173 :    
1174 :     Also, included a minor addition to ml-build.bat analogous to what was
1175 :     done in blume-20040519-ml-build.
1176 :    
1177 :     ----------------------------------------------------------------------
1178 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1179 : mblume 1494 Date: 2004/05/19 22:10:00 CDT
1180 :     Tag: blume-20040519-ml-build
1181 :     Description:
1182 :    
1183 :     Arranged for ml-build to clean up after itself a little bit better.
1184 :     The script generates a temporary SML source file and compiles it using
1185 :     CM, so CM generates metadata (GUID, SKEL, objectfile) for it. It now
1186 :     gets rid of those at the end, so they don't accumulate under .cm.
1187 :    
1188 :     This required a minor change to install.sh because the name of the
1189 :     metadata directory (default: .cm) is actually configurable at
1190 :     installation time.
1191 :    
1192 :     ----------------------------------------------------------------------
1193 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1194 : mblume 1491 Date: 2004/05/18 15:50:00 CDT
1195 :     Tag: blume-20040518-mkreader
1196 :     Description:
1197 :    
1198 :     Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
1199 :     implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
1200 :    
1201 :     ----------------------------------------------------------------------
1202 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1203 : mblume 1489 Date: 2004/05/11 14:35:00 CDT
1204 :     Tag: blume-20040511-win32sock
1205 :     Description:
1206 :    
1207 :     Added previously missing support for many socket-related functions
1208 :     under win32. Thanks to David Hansel <hansel@reactive-systems.com>
1209 :     for the voluminous patch!
1210 :    
1211 :     (I have not tested this patch under win32 yet.)
1212 :    
1213 : mblume 1490 Here is David's e-mail:
1214 :    
1215 :     Hi,
1216 :    
1217 :     Attached to this email you find a diff against sml/nj 110.45
1218 :     that will enable socket support under Windows.
1219 :    
1220 :     To apply the patch (using unix or cygwin)
1221 :     1) gunzip runtime.diff.gz
1222 :     2) "cd" into "src/runtime" in the source tree of a fresh
1223 :     110.45 installation.
1224 :     3) patch -p 1 < [your/path/to]runtime.diff
1225 :    
1226 :     The code compiles fine but has NOT yet been extensively tested.
1227 :     I only ran a few tests for basic socket client functionality
1228 :     (which worked fine). Especially the functions that use ioctl
1229 :     are not tested at all and might not work (see below).
1230 :    
1231 :     I implemented this since we want to move to a newer version of sml/nj
1232 :     but need socket support in order to use it. This is the first time I
1233 :     even had a look at the sml/nj source, so please review my changes
1234 :     before making this part of the distribution! Here are a few issues
1235 :     that I think might be better for someone to solve who is more
1236 :     familiar with the sml/nj source (and socket programming):
1237 :    
1238 :     - getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
1239 :     exception since I could not figure out what the windows equivalent
1240 :     of these functions is
1241 :    
1242 :     - In sockets-osdep.h there are a some #include statements that are
1243 :     only used in a few files that include sockets-osdep.h
1244 :    
1245 :     - In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
1246 :     does not process its return value since I don't know how to
1247 :     report an error upwards.
1248 :    
1249 :     - It would probably be good to have a call to WSACleanup() when
1250 :     the library is unloaded (if there is such a possibility).
1251 :     Otherwise I think Windows will take care of this automatically
1252 :     when the process finishes.
1253 :    
1254 :     - I used ioctlsocket() as a replacement for ioctl() but I have
1255 :     no idea if that is actually the proper replacement on Windows.
1256 :    
1257 :     - All these issues are marked in the code by "FIXME" comments.
1258 :    
1259 :     We use sml/nj extensively in our products and are quite happy
1260 :     with it. I hope this contribution will help you.
1261 :    
1262 :     Keep up the good work!
1263 :    
1264 :     David
1265 :    
1266 : mblume 1489 ----------------------------------------------------------------------
1267 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1268 : mblume 1488 Date: 2004/05/11 14:20:00 CDT
1269 :     Tag: blume-20040511-installml
1270 :     Description:
1271 :    
1272 :     Fixed two bugs in installml script. (Thanks to Vesa A. Norrman for
1273 :     the patch.)
1274 :    
1275 :     ----------------------------------------------------------------------
1276 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1277 : mblume 1487 Date: 2004/05/11 14:05:00 CDT
1278 :     Tag: blume-20040511-nlffi-netbsd
1279 :     Description:
1280 :    
1281 :     Added support for nlffi under netbsd. (Thanks to Vesa A. Norrman for
1282 :     the patch.)
1283 :    
1284 :     ----------------------------------------------------------------------
1285 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1286 : mblume 1486 Date: 2004/05/11 12:05:00 CDT
1287 :     Tag: blume-20040511-exports
1288 :     Description:
1289 :    
1290 :     As per request by Adam Chlipala <adam@hcoop.net>, extended various
1291 :     export lists in compiler-related .cm-files.
1292 :    
1293 :     ----------------------------------------------------------------------
1294 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1295 : mblume 1485 Date: 2004/05/11 11:35:00 CDT
1296 :     Tag: blume-20040511-allsource
1297 :     Description:
1298 :    
1299 :     The installer now honors the "src-smlnj" target again, although its meaning
1300 :     has changed from "all sources required for the compiler" to "all sources
1301 :     the installer knows about". In other words, if you enable "src-smlnj"
1302 :     in the "targets" file, then the installer will pull in sources for
1303 :     everything. (Notice that this refers to source code only. Compiled
1304 :     code is still only installed for modules that were requested explicitly
1305 :     or which are required for other modules that were requested explicitly.)
1306 :    
1307 :     ----------------------------------------------------------------------
1308 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1309 : mblume 1482 Date: 2004/04/23 17:40:00 CDT
1310 :     Tag: blume-20040423-ieee-scan
1311 :     Description:
1312 :    
1313 :     Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
1314 :     in the exponent calculation we get INF or ZERO (depending on the mantissa
1315 :     and the sign of the exponent).
1316 :    
1317 :     ----------------------------------------------------------------------
1318 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1319 : mblume 1480 Date: 2004/04/23 10:40:00 CDT
1320 :     Tag: blume-20040423-ml-build
1321 :     Description:
1322 :    
1323 :     The ml-build script now terminates with a non-0 status when something
1324 :     goes wrong.
1325 :    
1326 :     ----------------------------------------------------------------------
1327 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1328 : mblume 1479 Date: 2004/04/22 16:35:00 CDT
1329 :     Tag: blume-20040422-Option
1330 :     Description:
1331 :    
1332 :     Made exception Option to be the same as exception Option.Option
1333 :     (as it should be).
1334 :    
1335 :     ----------------------------------------------------------------------
1336 : allenleung 1468 Name: Allen Leung (leunga (at) reservoir (dot) com)
1337 :     Date: 2004/03/19 14:40:00 EST
1338 :     Tag: leunga-20040319-cygwin-nlffi
1339 :     Description:
1340 :    
1341 :     Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
1342 :     of SML/NJ. The problem is that
1343 :    
1344 :     lib = dlopen(NULL, ...)
1345 :     f = dlsym(lib, "malloc");
1346 :    
1347 :     does not work on Windows unless we explicitly export symbols
1348 :     such as 'malloc' during linking. We fixed this by explicitly
1349 :     exporting the required symbols with the magic gcc incantation:
1350 :    
1351 :     -Wl,--export-all cygwin.def
1352 :    
1353 :     where cygwin.def is a file containing all the symbols that
1354 :     we wish to export.
1355 :    
1356 :     I suspect this is a Windows problem and we'll have to
1357 :     do the same (somehow with windows compilers) when
1358 :     we build the native win32 version with the system
1359 :     calls LoadLibrary/GetProcAddress.
1360 :    
1361 :     ----------------------------------------------------------------------
1362 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
1363 : mblume 1465 Date: 2004/03/04 16:35:00 CST
1364 :     Tag: blume-20040304-intinf-fmt
1365 :     Description:
1366 :    
1367 :     Fixed problem with IntInf.fmt (sign would show up on the right instead
1368 :     of on the left for BIN, OCT, and HEX).
1369 :    
1370 :     ----------------------------------------------------------------------
1371 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1372 : mblume 1464 Date: 2004/03/04 11:25:00 CST
1373 :     Tag: blume-20040304-symlinks
1374 :     Description:
1375 :    
1376 :     Fixed problem with installer script (unix only) where bin/ml-yacc and
1377 :     friends pointed (via symlinks) to absolute locations instead of just
1378 :     .run-sml. This was reported by Vesa A Norrman.
1379 :    
1380 :     ----------------------------------------------------------------------
1381 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1382 : mblume 1455 Date: 2004/02/13 14:50:00 CST
1383 :     Tag: Release_110_45
1384 :     Description:
1385 :    
1386 :     New working version (110.45). New bootfiles.
1387 :    
1388 :     ----------------------------------------------------------------------
1389 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1390 : mblume 1448 Date: 2004/01/26 15:15:15 CST
1391 :     Tag: blume-20040126-toplevel
1392 :     Description:
1393 :    
1394 :     Improved handling of exceptions at the interactive toplevel.
1395 :    
1396 :     ----------------------------------------------------------------------
1397 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1398 :     Date: 2004/01/26 11:25:00
1399 : mblume 1446 Tag: blume-20040126-app
1400 :     Description:
1401 :    
1402 :     Type of top-level "app" corrected.
1403 : mblume 1447 Added code for setting vp_limitPtrMask to Win32-specific runtime.
1404 : mblume 1446
1405 :     ----------------------------------------------------------------------
1406 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1407 : mblume 1427 Date: 2003/11/18 17:10 CST
1408 :     Tag: blume-20031118-basis-fiddle
1409 :     Description:
1410 :    
1411 :     - changed Timer interface to what might become the spec
1412 :     - POSIX_FLAGS -> BIT_FLAGS according to spec
1413 :     - some other minor discrepancies wrt. spec eliminated
1414 :    
1415 :     ----------------------------------------------------------------------
1416 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1417 : mblume 1414 Date: 2003/11/06 12:00:00 CST
1418 :     Tag: Release_110_44
1419 :     Description:
1420 :    
1421 :     New working version (110.44). New bootfiles.
1422 :    
1423 :     ----------------------------------------------------------------------
1424 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1425 : mblume 1411 Date: 2003/11/04 11:50:00 CST
1426 :     Tag: blume-20031104-move-libraries
1427 :     Description:
1428 :    
1429 :     Eliminated the "dont_move_libraries" directive in config/targets.
1430 :     (The mechanism was broken and could not be fixed easily. Moreover,
1431 :     there does not seem to be any reason not to move all libraries into
1432 :     lib during installation. I originally implemented this directive as a
1433 :     backward-compatibility feature when I first introduced the new CM.
1434 :     Now that things have been stable for a long time and going back to the
1435 :     old CM is not an option, there is no reason to keep it around.)
1436 :    
1437 :     ----------------------------------------------------------------------
1438 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1439 : mblume 1409 Date: 2003/11/03 16:00:00 CST
1440 :     Tag: blume-20031103-installdir
1441 :     Description:
1442 :    
1443 :     Made installer honor INSTALLDIR variable again. (Thanks to Chris
1444 :     Richards for pointing out the problem and providing the solution.)
1445 :    
1446 :     ----------------------------------------------------------------------
1447 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1448 : mblume 1400 Date: 2003/10/01 17:05:00 CDT
1449 :     Tag: blume-20031001-lal-mlrisc
1450 :     Description:
1451 :    
1452 :     MLRISC bug fix from Lal.
1453 :    
1454 :     ----------------------------------------------------------------------
1455 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1456 : mblume 1399 Date: 2003/09/30 16:10:00 CDT
1457 :     Tag: blume-20030930-primio-bat
1458 : mblume 1398 Description:
1459 :    
1460 :     1. Added openVector, nullRd, and nullWr to PRIM_IO.
1461 :     2. Improved .bat files (for Win32 port) to make things work under Win95.
1462 :     (thanks to Aaron S. Hawley for this one)
1463 :    
1464 :     ----------------------------------------------------------------------
1465 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1466 : mblume 1395 Date: 2003/09/26 16:05:00 CDT
1467 :     Tag: blume-20030926-wrappriv
1468 :     Description:
1469 :    
1470 :     Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
1471 :    
1472 :     ----------------------------------------------------------------------
1473 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1474 : mblume 1394 Date: 2003/09/26 15:00:00 CDT
1475 :     Tag: blume-20030926-110_43_3
1476 :     Description:
1477 :    
1478 :     - additional cleanup
1479 :     - version number bump, NEW BOOTFILES
1480 :    
1481 :     ----------------------------------------------------------------------
1482 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1483 : mblume 1393 Date: 2003/09/26 12:00:00 CDT
1484 :     Tag: blume-20030926-ppautoload
1485 :     Description:
1486 :    
1487 :     I modified the read-eval-print loop so that the autoloader gets
1488 :     invoked whenever the prettyprinter tries to look up a symbol that
1489 :     is not currently defined in the toplevel environment but which
1490 :     appears in CM's autoload registry. As a result, we see far fewer of
1491 :     those ?.Foo.Bar.xxx names in the prettyprinter's output.
1492 :    
1493 :     In addition to this I tried to clean up some pieces of the Basis
1494 :     implementation (e.g., Socket, Word8Array) in order to prevent other
1495 :     instances of these ?.Foo.Bar.xxx names from being printed.
1496 :    
1497 :     The mechanism that picks names for types still needs some work, though.
1498 :     (Right now it seems that if there is a type A.t which is defined to
1499 : mblume 1394 be B.u, but B is unavailable at toplevel, then A.t gets printed as
1500 :     "?.B.u" although the perhaps more sensible solution would be to use
1501 : mblume 1393 "A.t" in this case. In other words, the prettyprinter should follow
1502 :     a chain of DEFtycs not farther than there are corresponding toplevel
1503 :     names in the current environment.)
1504 :    
1505 :     ----------------------------------------------------------------------
1506 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1507 : mblume 1391 Date: 2003/09/24 16:31:00 CDT
1508 :     Tag: blume-20030924-installer
1509 :     Description:
1510 :    
1511 :     Another installer tweak: All the ML code for the installer is now
1512 :     compiled during CMB.make and put into a little library called
1513 :     $smlnj/installer.cm. The installation then simply invokes
1514 :    
1515 :     sml -m $smlnj/installer.cm
1516 :    
1517 :     and everything happens automagically.
1518 :    
1519 :     Win32: ML code senses value of environment variable SMLNJ_HOME.
1520 :     Unix: ML code senses values of environment variables ROOT, CONFIGDIR,
1521 :     and BINDIR.
1522 :    
1523 :     The new scheme guarantees that the ML code responsible for the installation
1524 :     is in sync with the APIs of the main system. Also, the installer is
1525 :     somewhat faster because the installer script is precompiled.
1526 :    
1527 :     ----------------------------------------------------------------------
1528 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1529 : mblume 1390 Date: 2003/09/24 15:35:00 CDT
1530 :     Tag: blume-20030924-synsock
1531 :     Description:
1532 :    
1533 :     Added a signature SYNCHRONOUS_SOCKET to basis.cm. This is like SOCKET
1534 :     but excludes all non-blocking operations. Defined SOCKET (in Basis)
1535 :     and CML_SOCKET in terms of SYNCHRONOUS_SOCKET. Removed superfluous
1536 :     implementations of non-blocking operations from CML's Socket
1537 :     structure.
1538 :    
1539 :     ----------------------------------------------------------------------
1540 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1541 : mblume 1389 Date: 2003/09/24 15:10:05 CDT
1542 :     Tag: blume-20030924-sockets
1543 :     Description:
1544 :    
1545 :     1. Fixed SOCKET API and implementation to match Basis spec.
1546 :     This required changing the internal representation of sockets to one
1547 :     that remembers (for each socket file descriptor) whether it is currently
1548 :     blocking or non-blocking. This state is maintained lazily (i.e., a system
1549 :     call is made only if the state actually needs to change).
1550 :    
1551 :     2. OS-specific details of sockets were moved into separate files, thus
1552 :     making it possible to unify the bulk of the socket implementations
1553 :     between Unix and Win32.
1554 :    
1555 :     3. CML's socket API changed accordingly.
1556 :     (Note that we need to remove non-blocking functions from this API
1557 :     since they are redundant in the case of CML!)
1558 :    
1559 :     4. CML's socket implementation now makes use of non-blocking functions
1560 :     provided by Basis, thus removing all OS-dependent code from this part
1561 :     of CML.
1562 :    
1563 :     5. Changed Real64.precision from 52 to 53. Minor cleanup in Real64 code.
1564 :    
1565 :     ----------------------------------------------------------------------
1566 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1567 : mblume 1387 Date: 2003/09/22 12:10:00 CDT
1568 : mblume 1388 Tag: blume-20030922-110_43_2
1569 : mblume 1387 Description:
1570 :    
1571 :     Made a new interim version and bootfiles for developer's bootstrapping
1572 :     convenience.
1573 :    
1574 :     110.43.2 -- NEW BOOTFILES
1575 :    
1576 :     ----------------------------------------------------------------------
1577 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1578 : mblume 1385 Date: 2003/09/19 15:55:00 CDT
1579 :     Tag: blume-20030919-cmdir
1580 :     Description:
1581 :    
1582 :     1. new-install.sh -> install.sh
1583 :     2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
1584 :     3. tweaked installer so that another name instead of .cm can be chosen
1585 :     at install time (by setting the CM_DIR_ARC environment variable
1586 :     during installation); once installation is complete, the name is
1587 :     fixed
1588 :    
1589 :     ----------------------------------------------------------------------
1590 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1591 : mblume 1384 Date: 2003/09/18 16:00:00 CDT
1592 :     Tag: blume-20030918-110_43_1
1593 :     Description:
1594 :    
1595 :     Made a new interim version and bootfiles for developer's bootstrapping
1596 :     convenience.
1597 :    
1598 :     110.43.1 -- NEW BOOTFILES
1599 :    
1600 :     ----------------------------------------------------------------------
1601 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1602 : mblume 1383 Date: 2003/09/18 15:20:00 CDT
1603 :     Tag: blume-20030918-misc
1604 :     Description:
1605 :    
1606 :     1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
1607 :     this seems to be controversial at the moment) and used those in
1608 :     Posix.ProcEnv.times.
1609 :    
1610 :     2. Added Time.{from,to}Nanoseconds to Time.
1611 :    
1612 :     3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
1613 :     For example, fromLargeInt never needs to look at more than 3 "big
1614 :     digits" to get its 53 bits of precision.
1615 :    
1616 :     ----------------------------------------------------------------------
1617 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
1618 : mblume 1381 Date: 2003/09/17 16:30:00 CDT
1619 :     Tag: blume-20030917-real32-slices
1620 :     Description:
1621 :    
1622 :     Added an entry to the primitive environment
1623 :     (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
1624 :     added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
1625 :    
1626 :     Removed some of the "magic" constants in real64.sml and replaced them
1627 :     with code that generates these values from their corresponding
1628 :     integer counterparts.
1629 :    
1630 :     Made all(?) the slice-related changes to the Basis and made everything
1631 :     compile again...
1632 :    
1633 :     ----------------------------------------------------------------------
1634 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1635 : mblume 1375 Date: 2003/09/15 17:45:00 CDT
1636 :     Tag: blume-20030915-rbase
1637 :     Description:
1638 :    
1639 :     Fixed bug in Real.fromLargeInt.
1640 :    
1641 :     ----------------------------------------------------------------------
1642 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1643 : mblume 1369 Date: 2003/09/13 18:11:00 CDT
1644 :     Tag: blume-20030913-libinstall
1645 :     Description:
1646 :    
1647 :     Minor bugfix in config/libinstall (set anchor with path to
1648 :     standalone tool after installing it, otherwise libraries that
1649 :     need ml-lex or ml-yacc won't compile the first time the installer
1650 :     runs).
1651 :    
1652 :     ----------------------------------------------------------------------
1653 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1654 : mblume 1368 Date: 2003/09/12 11:45:00 CDT
1655 :     Tag: blume-20030912-various
1656 :     Description:
1657 :    
1658 :     - fixed bug in Real.toLargeInt
1659 :     - fixed bug in Posix.ProcEnv.times
1660 :     - changed inputLine functions to return an option
1661 :     - minor installer improvements / bugfixes
1662 :     - changed default @SMLalloc parameter for x86/celeron to 64k
1663 :    
1664 :     ----------------------------------------------------------------------
1665 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1666 : mblume 1356 Date: 2003/09/09 22:00:00 CDT
1667 :     Tag: Release_110_43
1668 :     Description:
1669 :    
1670 :     New working release 110.43. New bootfiles.
1671 :    
1672 :     ----------------------------------------------------------------------
1673 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1674 : mblume 1354 Date: 2003/09/09 19:20:00 CDT
1675 :     Tag: blume-20030909-installer
1676 :     Description:
1677 :    
1678 :     Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
1679 :     Modified config/install.bat to take advantage of it. Also modified
1680 :     config/install.sh (and called it config/new-install.sh) to take advantage
1681 :     of it on Unix systems. (The SML code is (supposed to be) platform-
1682 :     independent.)
1683 :    
1684 :     The installer can now install everything under Win32
1685 :     as well as under *nix as long as it compiles.
1686 :    
1687 :     Other changes:
1688 :    
1689 :     - made CML compile again under Win32
1690 :     - made eXene compile under Win32 (by providing a fake structure UnixSock
1691 :     and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
1692 :     - fixed a bug in nowhere: it assumed that type OS.Process.status is the
1693 :     same as type int; under Win32 it isn't
1694 :     - fixed some slice-related problems in the win32-specific parts of CML
1695 :     - added a functor argument "sameVol" to os-path-fn.sml in the Basis
1696 :     (under Win32, the volume name is case-insensitive, and the
1697 :     OS.Path code compares volume names for equality)
1698 :    
1699 :     ----------------------------------------------------------------------
1700 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1701 : mblume 1353 Date: 2003/09/08 11:55:00 CDT
1702 :     Tag: blume-20030908-fullpath
1703 :     Description:
1704 :    
1705 :     Made Win32 version of OS.FileSys.fullPath return current directory
1706 :     when given an empty string. This is what the spec says, and incidentally,
1707 :     CM depends on it. (CM otherwise goes into an infinite loop in certain
1708 :     cases when presented with the name of a non-existing .cm file.)
1709 :    
1710 :     ----------------------------------------------------------------------
1711 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1712 : mblume 1350 Date: 2003/09/04 16:30:00 CDT
1713 : mblume 1352 Tag: blume-20030905-slices-etc
1714 : mblume 1350 Description:
1715 :    
1716 :     1. Changed interface to vectors and arrays in Basis to match
1717 :     (draft) Basis spec.
1718 :     2. Added signatures and implementations of slices according to
1719 :     Basis spec.
1720 :     3. Edited source code throughout the system to make it compile again
1721 :     under 1. and 2. (In some cases code had to be added to have it
1722 :     match the new signatures.)
1723 :     4. MLRISC should be backward-compatible: the copies of the originals
1724 :     of files that needed to change under 3. were retained, the .cm files
1725 :     check the compiler version number and use old versions when
1726 :     appropriate.
1727 :     5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
1728 :     dirstream -> string option (in accordance with Basis spec).
1729 :     6. When generating code that counts lines, ml-lex used function
1730 :     CharVector.foldli, taking advantage of its old interface.
1731 :     This has been replaced with the corresponding code from
1732 :     CharVectorSlice. (html-lex must be re-lexed!)
1733 :     7. BitArray in smlnj-lib/Util has been extended/modified to match the
1734 :     new MONO_ARRAY signature. (Do we need BitArraySlice?)
1735 :     8. Removed temporary additions (fromInternal, toInternal) from the
1736 :     (now obsolete) IntInf in smlnj-lib/Util.
1737 :     9. Cleaned up structure Byte.
1738 :     10. Added localOffset, scan, and fromString to Date (according to spec).
1739 :     Cleaned/corrected implementation of Date.
1740 :     (Still need to check for correctness; implement better canonicalizeDate.)
1741 :     11. Added "scan" to signature IEEE_REAL.
1742 :     12. Some improvements to IntInf [in particular: efficiency-hack for
1743 :     mod and rem when second operand is 2 (for parity checks).]
1744 :     13. Changed representation of type Time.time, using a single IntInf.int
1745 :     value counting microseconds. This considerably simplified the
1746 :     implementation of structure Time. We now support negative time
1747 :     values; scan and fromString handle signs.
1748 :     14. Functor PrimIO now takes two additional arguments (VectorSlice and
1749 :     ArraySlice).
1750 :    
1751 :     ----------------------------------------------------------------------
1752 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1753 : mblume 1347 Date: 2003/08/28 17:00:00 CDT
1754 :     Tag: blume-20030828-intinf
1755 :     Description:
1756 :    
1757 :     This is a major update which comes with a version number bump
1758 :     (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
1759 :     and an implementation of IntInf in the Basis.
1760 :    
1761 :     There are a fairly large number of related changes and updates throughout
1762 :     the system:
1763 :    
1764 :     Basis:
1765 :     - Implemented IntInf.
1766 :     - Made LargeInt a projection of IntInf (by filtering through INTEGER).
1767 : mblume 1348 - Added some missing Real64 operations, most notably Real.toLargeInt.
1768 : mblume 1347 - Added FixedInt as a synonym for Int32.
1769 :    
1770 :     compiler:
1771 :     * Added support for a built-in intinf type.
1772 :     - literals
1773 :     - pattern matching
1774 :     - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
1775 :     - overloading on literals and operations
1776 :    
1777 :     This required adding a primitive type intinf, some additional
1778 :     primops, and implementations for several non-trivial intinf
1779 :     operations in Core. (The intinf type is completely abstract
1780 :     to the compiler; all operations get delegated back to the Core.)
1781 :    
1782 :     * Intinf equality is handled by polyequal. However, the compiler
1783 :     does not print its usual warning in this case (since polyequal
1784 :     is the right thing to do there).
1785 :    
1786 :     * Improved the organization of structure InlineT.
1787 :    
1788 :     * A word about conversion primops:
1789 :     If conversions involving intinf do not cancel out during
1790 : mblume 1348 CPS contract, then the compiler must insert calls to Core functions.
1791 : mblume 1347 Since all core access must be resolved already during the FLINT
1792 :     translate phase, it would be too late a the time of CPS contract
1793 : mblume 1348 to add new Core calls. For this reason, conversion primops
1794 : mblume 1347 for intinf carry two arguments: 1. the numeric argument that
1795 :     they are supposed to convert, and 2. the Core function that
1796 :     can help with this conversion if necessary. If CPS contract
1797 : mblume 1348 eliminates a primop, then the associated Core function becomes
1798 :     dead and goes away. Intinf conversion primops that do not get
1799 :     eliminated by CPS contract get rewritten into calls of their
1800 :     core functions by a separate, new phase.
1801 : mblume 1347
1802 :     interactive system:
1803 :     - Control.Print.intinfDepth controls max length of intinf constants
1804 :     being printed. (Analogous to Control.Print.stringDepth.)
1805 :     - Cleanup in printutil and pputil: got rid of unused stuff and
1806 :     duplicates; replaced some of the code with code that makes better
1807 :     use of library functionality.
1808 :    
1809 :     CM:
1810 :     Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
1811 :     are no longer silent.
1812 :    
1813 :     CKIT:
1814 :     Fixed mismatched uses of Int32 and LargeInt. I always decided
1815 :     in favor of LargeInt -- which is now the same as IntInf.
1816 :     CKIT-knowledgable people should check whether this is what's
1817 :     intended and otherwise change things back to using Int32 or
1818 :     FixedInt.
1819 :    
1820 :     Throughout the code:
1821 : mblume 1348 Started using IntInf.int literals and built-in operations
1822 : mblume 1347 (e.g., comparison with 0) where this seems appropriate.
1823 :    
1824 :    
1825 :     ----------------------------------------------------------------------
1826 : macqueen 1343 Name: Dave MacQueen (dbm@cs.uchicago.edu)
1827 :     Date: 2003/08/13 11:36:00 CDT
1828 :     Tag: dbm-20030813-mcz-merge1
1829 :     Description:
1830 :    
1831 :     Merging changes from the mcz-branch development branch into trunk.
1832 :     These changes involve replacement of the emulated old prettyprinter
1833 :     interface with direct use of the SML/NJ Lib PP library, and fixing
1834 :     of a couple of bugs (895, 1186) relating to error messages. A new
1835 :     prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
1836 :     has been added.
1837 :    
1838 :     ----------------------------------------------------------------------
1839 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1840 : mblume 1342 Date: 2003/08/11 15:45:00 CDT
1841 :     Tag: blume-20030811-windows
1842 :     Description:
1843 :    
1844 :     Version number bumped to 110.42.9. NEW BOOTFILES!!!
1845 :    
1846 :     http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
1847 :    
1848 :     This patch restores SML/NJ's ability to run under win32. There are a
1849 :     number of changes, including fixes for several bugs that had gone
1850 :     unnoticed until now:
1851 :    
1852 :     - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
1853 :     trying to run the win32 version from within cygwin.)
1854 :    
1855 :     - There are a number of simple .bat scripts that substitute for their
1856 :     corresponding Unix shell-scripts. (See below.)
1857 :    
1858 :     - The internals of ml-build have been modified slightly. The main
1859 :     difference is that instead of calling ".link-sml" (or link-sml.bat)
1860 :     using OS.Process.system, the ML process delegates this task back
1861 :     to the script. Otherwise problems arise in mixed environments such
1862 :     as Cygwin where scripts look and work like Unix scripts, but
1863 :     where OS.Process.system cannot run them.
1864 :    
1865 :     - In CM, the srcpath pickler used native pathname syntax -- which
1866 :     is incorrect in the case of cross-compilation. The new pickle format
1867 :     is independent of platform-specific naming conventions.
1868 :    
1869 :     - Path configuration files (such as lib/pathconfig) can now choose
1870 :     between native and standard syntax. Placing a line of the form
1871 :    
1872 :     standard!
1873 :    
1874 :     into the file causes all subsequent paths to be interpreted using
1875 :     CM standard pathname syntax (= Unix conventions); a line
1876 :    
1877 :     native!
1878 :    
1879 :     switches back to native style. This was needed so that
1880 :     path config files can be written portably, see src/system/pathconfig.
1881 :    
1882 :     - Runtime system:
1883 :    
1884 :     - win32-filesys.c: get_file_time and set_file_time now
1885 :     access modification time, not creation time.
1886 :    
1887 :     - I/O code made aware of new array representation.
1888 :    
1889 :     - Bug fixes in X86.prim.masm.
1890 :    
1891 :     - src/system/makeml made aware of win32. (For use under cygwin
1892 :     and other Unix-environments for windows.)
1893 :    
1894 :     - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
1895 :     which caused BinIO.inputAll to fail consistently.
1896 :    
1897 :     .bat scripts:
1898 :    
1899 :     Windows .bat scripts assume that SMLNJ_HOME is defined.
1900 :    
1901 :     - sml.bat, ml-yacc.bat, ml-lex.bat: Driver scripts for standalone
1902 :     applications (sml, ml-yacc, ml-lex).
1903 :     - ml-build.bat: analogous to ml-build.
1904 :     - config\install.bat: Analogous to config/install.sh. This requires
1905 :     that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
1906 :     (nmake etc. must be on the path, and vcvars32 must have been run.)
1907 :     Moreover, sources for ml-lex and ml-yacc need to exist under src,
1908 :     and the bootfile hierarchy must have been unpacked under
1909 :     sml.boot.x86-win32.
1910 :     The script is very primitive and does a poor job at error checking.
1911 :     It only installs the base system, ml-lex, and ml-yacc. No other
1912 :     libraries are being installed (i.e., you get only those that
1913 :     are part of the compiler.)
1914 :     - link-sml.bat: analogous to .link-sml, but not currently used
1915 :    
1916 :     Unrelated bug fixes:
1917 :    
1918 :     - ml-nlffigen now exports structures ST_* corresponding to incomplete
1919 :     types.
1920 :     - Added getDevice to PP/src/pp-debug-fn.sml. (Would not compile
1921 :     otherwise.)
1922 :    
1923 :     ----------------------------------------------------------------------
1924 : macqueen 1337 Name: Dave MacQueen (macqueen@cs.uchicago.edu)
1925 :     Date: 2003/06/17
1926 :     Tag: macqueen-20030617-bug895
1927 :     Description:
1928 :    
1929 :     Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
1930 :     Tag will be used for new development branch (mcz-branch) for
1931 :     use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
1932 :    
1933 :     ----------------------------------------------------------------------
1934 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1935 : mblume 1335 Date: 2003/05/27 16:55:00 CDT
1936 :     Tag: blume-20030527-polyeq
1937 :     Description:
1938 :    
1939 :     Tried to eliminated most cases of polymorphic equality.
1940 :    
1941 :     ----------------------------------------------------------------------
1942 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1943 : mblume 1334 Date: 2003/05/21 17:45:00 CDT
1944 :     Tag: blume-20030517-complete
1945 :     Description:
1946 :    
1947 :     Two changes:
1948 :    
1949 :     1. Added a flag for controlling whether non-exhaustive bindings will
1950 :     be treated as errors (default is false).
1951 :     2. Cleaned up the *entire* source tree so that CMB.make goes through
1952 :     without a single non-exhaustive match- or bind warning.
1953 :    
1954 :     ----------------------------------------------------------------------
1955 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1956 : mblume 1332 Date: 2003/05/17 10:20:00 CDT
1957 :     Tag: blume-20030517-absyn
1958 :     Description:
1959 :    
1960 :     1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
1961 :    
1962 :     This mainly affects the quality of error messages. However, some
1963 :     of the code is now more straightforward than before. (Treatment of
1964 :     the above four constructs in translate.sml is much simpler than
1965 :     the "macro-expansion" that was going on before. Plus, the mach-
1966 :     compiler no longer gets invoked just to be able to compile an
1967 :     if-expression.)
1968 :    
1969 :     2. The ErrorMsg.Error exception is now caught and absorbed by the
1970 :     interactive loop.
1971 :    
1972 :     ----------------------------------------------------------------------
1973 : allenleung 1327 Name: Allen Leung
1974 :     Date: 2003/05/16 13:05:00 CDT
1975 :     Tag: leunga-20030516-cygwin-runtime
1976 :     Description:
1977 :    
1978 :     Ported the runtime system to cygwin, which uses the unix
1979 :     x86-unix bin files. Missing/buggy features:
1980 :    
1981 :     o getnetbyname, getnetbyaddr: these functions seem to be missing in
1982 :     the Cygwin library.
1983 :     o Ctrl-C handling may be flaky.
1984 :     o Windows system calls and Windows I/O are not supported.
1985 :    
1986 :     A new set of binfiles is located at:
1987 :    
1988 :     http://www.dorsai.org/~leunga/boot.x86-unix.tgz
1989 :    
1990 :     This is only needed for bootstrapping the cygwin version of smlnj.
1991 :     Other x86 versions can use the existing binfiles.
1992 :    
1993 :     ----------------------------------------------------------------------
1994 : mblume 1317 Name: Matthias Blume
1995 :     Date: 2003/04/08 15:42:00 CDT
1996 :     Tag: blume-20030408-listpair
1997 :     Description:
1998 :    
1999 :     1. Added a target 'mlrisc' to installer.
2000 :    
2001 :     2. Added missing elements to structure ListPair.
2002 :    
2003 :     ----------------------------------------------------------------------
2004 : leunga 1296 Name: Allen Leung
2005 :     Date: 2003/01/07 10:40:00 EST
2006 :     Tag: leunga-20030107-int-rem
2007 :     Description:
2008 :    
2009 :     Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
2010 :     The arguments to the SUBL instruction were swapped.
2011 :    
2012 :     ----------------------------------------------------------------------
2013 : blume 1229 Name: Matthias Blume
2014 : blume 1294 Date: 2002/12/12 16:25:00 EST
2015 :     Tag: blume-20021212-risc-ra
2016 :     Description:
2017 :    
2018 :     Fixed a serious bug in the rewrite code for FP spilling/reloading that
2019 :     sent the RA into an infinite loop when floating point registers get
2020 :     spilled. (Because of this bug, e.g., nucleic stopped compiling between
2021 :     110.37 and 110.38.)
2022 :     There was another set of potential problems related to the handling of
2023 :     MLRISC annotations (but those did not yet cause real problems, apparently).
2024 :    
2025 :     ----------------------------------------------------------------------
2026 :     Name: Matthias Blume
2027 : blume 1291 Date: 2002/12/06 22:40:00 EST
2028 :     Tag: blume-20021206-cm-fileid
2029 :     Description:
2030 :    
2031 :     Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
2032 :     This fixes the problem of CM getting confused by files that suddenly
2033 :     change their identity (e.g., by getting unlinked and recreated by some
2034 :     text editor such as vi). There might be a better/cheaper/cleaner way
2035 :     of doing this, but for now this will have to do.
2036 :    
2037 :     ----------------------------------------------------------------------
2038 :     Name: Matthias Blume
2039 : blume 1288 Date: 2002/10/28 09:50:00 EST
2040 :     Tag: blume-20021028-typecheck
2041 :     Description:
2042 :    
2043 :     Exported structure Typecheck from $smlnj/viscomp/core.cm.
2044 :    
2045 :     ----------------------------------------------------------------------
2046 :     Name: Matthias Blume
2047 : blume 1282 Date: 2002/10/17 09:10:00 EDT
2048 : blume 1279 Tag: Release_110_42
2049 :     Description:
2050 :    
2051 : blume 1282 In good old tradition, there has been a slight hiccup so that we have
2052 :     to patch 110.42 after the fact. The old release tag has been replaced
2053 :     (see below).
2054 :    
2055 :     The change solves a problem with two competing approaches the
2056 :     configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
2057 :     each other's way.
2058 :    
2059 :     This change only affects the runtime system code and the installer script.
2060 :     (No new bootfiles.)
2061 :    
2062 :     ----------------------------------------------------------------------
2063 :     Name: Matthias Blume
2064 :     Date: 2002/10/16 12:00:00 EDT
2065 :     Tag: Release_110_42_removed
2066 :     Description:
2067 :    
2068 : blume 1279 New working release. New bootfiles.
2069 :    
2070 :     ----------------------------------------------------------------------
2071 :     Name: Matthias Blume
2072 : blume 1273 Date: 2002/10/10 13:10:00 EDT
2073 :     Tag: blume-20021010-ppc-divs
2074 :     Description:
2075 :    
2076 :     The mltree operator DIVS must be implemented with an overflow check on
2077 :     the PPC because the hardware indicates divide-by-zero using "overflow" as
2078 :     well.
2079 :    
2080 :     ----------------------------------------------------------------------
2081 :     Name: Matthias Blume
2082 : blume 1261 Date: 2002/07/23 11:45:00
2083 :     Tag: blume-20020723-smlnj-home
2084 :     Description:
2085 :    
2086 :     Sml now senses the SMLNJ_HOME environment variable. If this is set,
2087 :     then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
2088 :     CM_PATHCONFIG is also set), the path configuration file is assumed
2089 :     to be in $SMLNJ_HOME/lib/pathconfig. This way one can easily move
2090 :     the entire tree to some other place and everything will "just work".
2091 :    
2092 :     (Companion commands such as ml-build and ml-makedepend also sense this
2093 :     variable.)
2094 :    
2095 :     ----------------------------------------------------------------------
2096 :     Name: Matthias Blume
2097 : blume 1259 Date: 2002/07/12 21:19:00 EDT
2098 :     Tag: blume-20020712-liveness
2099 :     Description:
2100 :    
2101 :     Exported two useful "step" functions from liveness module (MLRISC).
2102 :    
2103 :     ----------------------------------------------------------------------
2104 :     Name: Matthias Blume
2105 : blume 1253 Date: 2002/07/05 16:00 EDT
2106 :     Tag: Release_110_41
2107 :     Description:
2108 :    
2109 :     New working release. New bootfiles.
2110 :    
2111 :     ----------------------------------------------------------------------
2112 :     Name: Matthias Blume
2113 : blume 1250 Date: 2002/07/05 10:25:00 EDT
2114 :     Tag: blume-20020705-btimp
2115 :     Description:
2116 :    
2117 :     Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
2118 :     other clients can set up backtracing support.
2119 :    
2120 :     ----------------------------------------------------------------------
2121 :     Name: Matthias Blume
2122 : blume 1249 Date: 2002/06/25 17:23:00 EDT
2123 :     Tag: blume-20020625-fpmax
2124 :     Description:
2125 :    
2126 :     Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
2127 :     case. (The sense of the isNaN test was reversed -- which made min and
2128 :     max always return their first argument.)
2129 :    
2130 :     ----------------------------------------------------------------------
2131 :     Name: Matthias Blume
2132 : blume 1240 Date: 2002/06/11
2133 :     Tag: blume-20020611-unixpath
2134 :     Description:
2135 :    
2136 :     Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
2137 :    
2138 :     ----------------------------------------------------------------------
2139 :     Name: Matthias Blume
2140 : blume 1238 Date: 2002/06/10 16:35:00 EDT
2141 :     Tag: blume-20020610-ieeereal
2142 :     Description:
2143 :    
2144 :     I back-ported my implementation of IEEEReal.fromString from the
2145 :     idlbasis-devel branch so that we can test it.
2146 :    
2147 :     Another small change is that ppDec tries to give more information
2148 :     than just "<sig>" in the case of functors. However, this code is
2149 :     broken in some mysterious way if the functor's body's signature
2150 :     has not been declared by ascription but gets inferred from the
2151 :     implementation. This needs fixing...
2152 :    
2153 :     ----------------------------------------------------------------------
2154 :     Name: Matthias Blume
2155 : blume 1229 Date: 2002/05/31
2156 :     Tag: blume-20020531-btrace-mode
2157 :     Description:
2158 :    
2159 :     Resurrected SMLofNJ.Internals.BTrace.mode. (It accidentally fell by
2160 :     the wayside when I switched over to using Controls everywhere.)
2161 :    
2162 :     ----------------------------------------------------------------------
2163 : george 1222 Name: Lal George
2164 :     Date: 2002/05/23 12:21:40 EDT
2165 :     Tag: george-20020523-visual-labels
2166 :     Description:
2167 :    
2168 :     Labels are now displayed in the graphical output to make
2169 :     the fall-through and target blocks obvious.
2170 :    
2171 :     ----------------------------------------------------------------------
2172 : blume 1204 Name: Matthias Blume
2173 : blume 1220 Date: 2002/05/22 11:03:00 EDT
2174 :     Tag: blume-20020522-shrink
2175 :     Description:
2176 :    
2177 :     John tweaked yesterday's fix for 1131 to handle an out-of-memory
2178 :     situation that comes up when allocating huge arrays.
2179 :    
2180 :     ----------------------------------------------------------------------
2181 :     Name: Matthias Blume
2182 : blume 1215 Date: 2002/05/21 16:00:00 EDT
2183 :     Tag: Release_110_40
2184 :     Description:
2185 :    
2186 :     New working release (110.40). New bootfiles.
2187 :    
2188 :     [Also: John Reppy fixed GC bug 1131.]
2189 :    
2190 :     ----------------------------------------------------------------------
2191 :     Name: Matthias Blume
2192 : blume 1212 Date: 2002/05/21 12:35:00 EDT
2193 :     Tag: blume-20020521-cmdoc
2194 :     Description:
2195 :    
2196 :     CM documentation update.
2197 :    
2198 :     ----------------------------------------------------------------------
2199 :     Name: Matthias Blume
2200 : blume 1211 Date: 2002/05/21 10:55:00 EDT
2201 :     Tag: blume-20020521-misc
2202 :     Description:
2203 :    
2204 :     - John tweaked runtime to be silent on heap export (except when
2205 :     GC messages are on).
2206 :     - I added a few more things (cross-compiling versions of CMB) to
2207 :     config/preloads (as suggestions).
2208 :    
2209 :     ----------------------------------------------------------------------
2210 :     Name: Matthias Blume
2211 : blume 1208 Date: 2002/05/20 22:25:00 EDT
2212 :     Tag: blume-20020520-controls
2213 :     Description:
2214 :    
2215 :     - Added ControlUtil structure to control-lib.cm.
2216 :     - Use it throughout.
2217 :     - Used Controls facility to define MLRISC controls (as opposed to
2218 :     registering MLRISC control ref cells with Controls after the fact)
2219 :     - Fixed messed-up controls priorities.
2220 :    
2221 :     * Removed again all the stuff from config/preloads that one wouldn't
2222 :     be able to preload at the time the initial heap image is built.
2223 :     (Many libraries, e.g., CML, do not exist yet at this time. The
2224 :     only libraries that can be preloaded via config/preloads are those
2225 :     that come bundled with the bootfiles.)
2226 :    
2227 :     ----------------------------------------------------------------------
2228 :     Name: Matthias Blume
2229 : blume 1204 Date: 2002/05/20 10:59:00 EDT
2230 :     Tag: blume-20020520-preloads
2231 :     Description:
2232 :    
2233 :     Added a lot of commented-out suggestions for things to be included
2234 :     in config/preloads.
2235 :    
2236 :     ----------------------------------------------------------------------
2237 : leunga 1203 Name: Allen Leung
2238 :     Date: 2002/05/18 14:20:00 EDT
2239 :     Tag: leunga-20020518-mdl
2240 :     Description:
2241 :    
2242 :     o Made the mdl tool stuff compile and run again.
2243 :     o I've disabled all the stuff that depends on RTL specifications; they
2244 :     are all badly broken anyway.
2245 :    
2246 :     ----------------------------------------------------------------------
2247 : blume 1201 Name: Matthias Blume
2248 :     Date: 2002/05/17 16:49:00 EDT
2249 :     Tag: blume-20020517-controls
2250 :     Description:
2251 :    
2252 :     0. John Reppy made several modifications to the SML/NJ library.
2253 :     In particular, there is a shiny new controls-lib.cm.
2254 :    
2255 :     1. Pushed new controls interface through compiler so that everything
2256 :     compiles again.
2257 :    
2258 :     2. Added FormatComb and FORMAT_COMB to the CML version of the
2259 :     SML/NJ library (so that CML compiles again).
2260 :    
2261 :     3. Modified init scripts because XXX_DEFAULT environment variables
2262 :     are no longer with us. (Boot-time initialization is now done
2263 :     using the same environment variables that are also used for
2264 :     startup-time initialization of controls.)
2265 :    
2266 :     ----------------------------------------------------------------------
2267 : george 1192 Name: Lal George
2268 :     Date: 2002/05/15 09:20:10 EDT
2269 :     Tag: george-20020515-pseudo-op-decls
2270 :     Description:
2271 :    
2272 :     All pseudo-ops emitted before the first segment declaration
2273 :     such as TEXT, DATA, and BSS directives are assumed to be global
2274 :     declarations and are emitted first in the assembly file. This is
2275 :     useful in a number of situations where one has pseudo-ops that are not
2276 :     specific to any segment, and also works around the constraint that one
2277 :     cannot have client pseudo-ops in the TEXT segment.
2278 :    
2279 :     Because no segment is associated with these declarations it is
2280 :     an error to allocate any space or objects before the first segment
2281 :     directive and an exception will be raised. However, we cannot make
2282 :     this check for client pseudo-ops.
2283 :    
2284 :     These top level declarations are a field in the CFG graph_info.
2285 :     In theory you can continue to add to this field after the CFG has been
2286 :     built -- provided you know what you are doing;-)
2287 :    
2288 :     ----------------------------------------------------------------------
2289 : blume 1175 Name: Matthias Blume
2290 : blume 1190 Date: 2002/05/13 16:40:00 EDT
2291 :     Tag: blume-20020513-pp-etc
2292 :     Description:
2293 :    
2294 :     A few minor bugfixes:
2295 :    
2296 :     - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
2297 :     (Bogus printouts for redefined bindings still occur. Compiler
2298 :     bug should no longer occur now. We need to redo the prettyprinter
2299 :     from scratch.)
2300 :    
2301 :     - CM pathname printer now also adds escape sequences for ( and )
2302 :    
2303 :     - commend and docu fixes for ml-nlffi
2304 :    
2305 :     ----------------------------------------------------------------------
2306 :     Name: Matthias Blume
2307 : blume 1189 Date: 2002/05/10 16:40:00 EDT
2308 :     Tag: blume-20020510-erg-textio
2309 :     Description:
2310 :    
2311 :     Applied the following bugfix provided by Emden Gansner:
2312 :    
2313 :     Output is corrupted when outputSubstr is used rather than output.
2314 :    
2315 :     The problem occurs when a substring
2316 :    
2317 :     ss = (s, dataStart, dataLen)
2318 :    
2319 :     where dataStart > 0, fills a stream buffer with avail bytes left.
2320 :     avail bytes of s, starting at index dataStart, are copied into the
2321 :     buffer, the buffer is flushed, and then the remaining dataLen-avail
2322 :     bytes of ss are copied into the beginning of the buffer. Instead of
2323 :     starting this copy at index dataStart+avail in s, the current code
2324 :     starts the copy at index avail.
2325 :    
2326 :     Fix:
2327 :     In text-io-fn.sml, change line 695 from
2328 :     val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
2329 :     to
2330 :     val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
2331 :    
2332 :     ----------------------------------------------------------------------
2333 :     Name: Matthias Blume
2334 : blume 1186 Date: 2002/04/12 13:55:00 EDT
2335 :     Tag: blume-20020412-assyntax
2336 :     Description:
2337 :    
2338 :     1. Grabbed newer assyntax.h from the XFree86 project.
2339 :     2. Fiddled with how to compile X86.prim.asm without warnings.
2340 :     3. (Very) Minor cleanup in CM.
2341 :    
2342 :     ----------------------------------------------------------------------
2343 :     Name: Matthias Blume
2344 : blume 1185 Date: 2002/04/01 (no joke!) 17:07:00 EST
2345 :     Tag: blume-20020401-x86div
2346 :     Description:
2347 :    
2348 :     Added full support for div/mod/rem/quot on the x86, using the machine
2349 :     instruction's two results (without clumsily recomputing the remainder)
2350 :     directly where appropriate.
2351 :    
2352 :     Some more extensive power-of-two support was added to the x86 instruction
2353 :     selector (avoiding expensive divs, mods, and muls where they can be
2354 :     replaced with cheaper shifts and masks). However, this sort of thing
2355 :     ought to be done earlier, e.g., within the CPS optimizer so that
2356 :     all architectures benefit from it.
2357 :    
2358 :     The compiler compiles to a fixed point, but changes might be somewhat
2359 :     fragile nevertheless. Please, report any strange things that you might
2360 :     see wrt. div/mod/quot/rem...
2361 :    
2362 :     ----------------------------------------------------------------------
2363 :     Name: Matthias Blume
2364 : blume 1184 Date: 2002/03/29 17:22:00
2365 :     Tag: blume-20020329-div
2366 :     Description:
2367 :    
2368 :     Fixed my broken div/mod logic. Unfortunately, this means that the
2369 :     inline code for div/mod now has one more comparison than before.
2370 :     Fast paths (quotient > 0 or remainder = 0) are not affected, though.
2371 :     The problem was with quotient = 0, because that alone does not tell
2372 :     us which way the rounding went. One then has to look at whether
2373 :     remainder and divisor have the same sign... :(
2374 :    
2375 :     Anyway, I replaced the bootfiles with fresh ones...
2376 :    
2377 :     ----------------------------------------------------------------------
2378 :     Name: Matthias Blume
2379 : blume 1183 Date: 2002/03/29 14:10:00 EST
2380 :     Tag: blume-20020329-inlprims
2381 :     Description:
2382 :    
2383 :     NEW BOOTFILES!!! Version number bumped to 110.39.3.
2384 :    
2385 :     Primops have changed. This means that the bin/boot-file formats have
2386 :     changed as well.
2387 :    
2388 :     To make sure that there is no confusion, I made a new version.
2389 :    
2390 :    
2391 :     CHANGES:
2392 :    
2393 :     * removed REMT from mltree (remainder should never overflow).
2394 :    
2395 :     * added primops to deal with divisions of all flavors to the frontend
2396 :    
2397 :     * handled these primops all the way through so they map to their respective
2398 :     MLRISC support
2399 :    
2400 :     * used these primops in the implementation of Int, Int32, Word, Word32
2401 :    
2402 :     * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
2403 :    
2404 :     * parameterized INLMIN, INLMAX, and INLABS by a numkind
2405 :    
2406 :     * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
2407 :     floating point
2408 :    
2409 :     * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
2410 :     and Real (but Real.abs maps to a separate floating-point-only primop)
2411 :    
2412 :    
2413 :     TODO items:
2414 :    
2415 :     * Hacked Alpha32 instruction selection, disabling the selection of REMx
2416 :     instructions because the machine instruction encoder cannot handle
2417 :     them. (Hppa, PPC, and Sparc instruction selection did not handle
2418 :     REM in the first place, and REM is supported by the x86 machine coder.)
2419 :    
2420 :     * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
2421 :     selection phase. (The two can be streamlined because the hardware
2422 :     delivers both quotient and remainder at the same time anyway.)
2423 :    
2424 :     * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
2425 :     (Currently the behavior is inconsistent both across architectures and
2426 :     wrt. the draft Basis spec.)
2427 :    
2428 :     * Word8 should eventually be handled natively, too.
2429 :    
2430 :     * There seems to be one serious bug in mltree-gen.sml. It appears, though,
2431 :     as if there currently is no execution path that could trigger it in
2432 :     SML/NJ. (The assumptions underlying functions arith and promotable do not
2433 :     hold for things like multiplication and division.)
2434 :    
2435 :     ----------------------------------------------------------------------
2436 :     Name: Matthias Blume
2437 : blume 1181 Date: 2002/03/27 16:27:00 EST
2438 :     Tag: blume-20020327-mlrisc-divisions
2439 :     Description:
2440 :    
2441 :     Added support for all four division operations (ML's div, mod, quot,
2442 :     and rem) to MLRISC. In the course of doing so, I also rationalized
2443 :     the naming (no more annoying switch-around of DIV and QUOT), by
2444 :     parameterizing the operation by div_rounding_mode (which can be either
2445 :     DIV_TO_ZERO or DIV_TO_NEGINF).
2446 :    
2447 :     The generic MLTreeGen functor takes care of compiling all four
2448 :     operations down to only round-to-zero div.
2449 :    
2450 :     Missing pieces:
2451 :    
2452 :     * Doing something smarter than relying on MLTreeGen on architectures
2453 :     like, e.g., the x86 where hardware division delivers both quotient and
2454 :     remainder at the same time. With this, the implementation of the
2455 :     round-to-neginf operations could be further streamlined.
2456 :    
2457 :     * Remove inlining support for div/mod/rem from the frontend and replace it
2458 :     with primops that get carried through to the backend. Do this for all
2459 :     int and word types.
2460 :    
2461 :     ----------------------------------------------------------------------
2462 :     Name: Matthias Blume
2463 : blume 1180 Date: 2002/03/25 17:25:00 EST
2464 :     Tag: blume-20020325-divmod
2465 :     Description:
2466 :    
2467 :     I improved (hopefully without breaking them) the implementation of Int.div,
2468 :     Int.mod, and Int.rem. For this, the code in translate.sml now takes
2469 :     advantage of the following observations:
2470 :    
2471 :     Let q = x quot y r = x rem y
2472 :     d = x div y m = x mod y
2473 :    
2474 :     where "quot" is the round-to-zero version of integer division that
2475 :     hardware usually provides. Then we have:
2476 :    
2477 :     r = x - q * y where neither the * nor the - will overflow
2478 :     d = if q >= 0 orelse x = q * y then q else q - 1
2479 :     where neither the * nor the - will overflow
2480 :     m = if q >= 0 orelse r = 0 then r else r + y
2481 :     where the + will not overflow
2482 :    
2483 :     This results in substantial simplification of the generated code.
2484 :     The following table shows the number of CFG nodes and edges generated
2485 :     for
2486 :     fun f (x, y) = x OPER y
2487 :     (* with OPER \in div, mod, quot, rem *)
2488 :    
2489 :    
2490 :     OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
2491 :     --------------------------------------------------------
2492 :     div | 24 | 39 | 12 | 16
2493 :     mod | 41 | 71 | 12 | 16
2494 :     quot | 8 | 10 | 8 | 10
2495 :     rem | 10 | 14 | 8 | 10
2496 :    
2497 :    
2498 :     ----------------------------------------------------------------------
2499 :     Name: Matthias Blume
2500 : blume 1179 Date: 2002/03/25 22:06:00 EST
2501 :     Tag: blume-20020325-cprotobug
2502 :     Description:
2503 :    
2504 :     Fixed a bug in cproto (c prototype decoder).
2505 :    
2506 :     ----------------------------------------------------------------------
2507 :     Name: Matthias Blume
2508 : blume 1178 Date: 2002/03/25 16:00:00 EST
2509 :     Tag: blume-20020325-raw-primops
2510 :     Description:
2511 :    
2512 :     I did some cleanup to Allen's new primop code and
2513 :     replaced yesterday's bootfiles with new ones.
2514 :     (But they are stored in the same place.)
2515 :    
2516 :     ----------------------------------------------------------------------
2517 :     Name: Matthias Blume
2518 : blume 1175 Date: 2002/03/24 22:40:00 EST
2519 :     Tag: blume-20020324-bootfiles
2520 :     Description:
2521 :    
2522 :     Made the bootfiles that Allen asked for.
2523 :    
2524 :     ----------------------------------------------------------------------
2525 : leunga 1174 Name: Allen Leung
2526 :     Date: 2002/03/23 15:50:00 EST
2527 :     Tag: leunga-20020323-flint-cps-rcc-primops
2528 :     Description:
2529 :    
2530 :     1. Changes to FLINT primops:
2531 :    
2532 :     (* make a call to a C-function;
2533 :     * The primop carries C function prototype information and specifies
2534 :     * which of its (ML-) arguments are floating point. C prototype
2535 :     * information is for use by the backend, ML information is for
2536 :     * use by the CPS converter. *)
2537 :     | RAW_CCALL of { c_proto: CTypes.c_proto,
2538 :     ml_args: ccall_type list,
2539 :     ml_res_opt: ccall_type option,
2540 :     reentrant : bool
2541 :     } option
2542 :     (* Allocate uninitialized storage on the heap.
2543 :     * The record is meant to hold short-lived C objects, i.e., they
2544 :     * are not ML pointers. With the tag, the representation is
2545 :     * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
2546 :     *)
2547 :     | RAW_RECORD of {tag:bool,sz:int}
2548 :     and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
2549 :    
2550 :     2. These CPS primops are now overloaded:
2551 :    
2552 :     rawload of {kind:numkind}
2553 :     rawstore of {kind:numkind}
2554 :    
2555 :     The one argument form is:
2556 :    
2557 :     rawload {kind} address
2558 :    
2559 :     The two argument form is:
2560 :    
2561 :     rawload {kind} [ml object, byte-offset]
2562 :    
2563 :     3. RAW_CCALL/RCC now takes two extra arguments:
2564 :    
2565 :     a. The first is whether the C call is reentrant, i.e., whether
2566 :     ML state should be saved and restored.
2567 :     b. The second argument is a string argument specifying the name of
2568 :     library and the C function.
2569 :    
2570 :     These things are currently not handled in the code generator, yet.
2571 :    
2572 :     4. In CProto,
2573 :    
2574 :     An encoding type of "bool" means "ml object" and is mapped into
2575 :     C prototype of PTR. Note that "bool" is different than "string",
2576 :     even though "string" is also mapped into PTR, because "bool"
2577 :     is assigned an CPS type of BOGt, while "string" is assigned INT32t.
2578 :    
2579 :     5. Pickler/unpicker
2580 :    
2581 :     Changed to handle RAW_RECORD and newest RAW_CCALL
2582 :    
2583 :     6. MLRiscGen,
2584 :    
2585 :     1. Changed to handle the new rawload/rawstore/rawrecord operators.
2586 :     2. Code for handling C Calls has been moved to a new module CPSCCalls,
2587 :     in the file CodeGen/cpscompile/cps-c-calls.sml
2588 :    
2589 :     7. Added the conditional move operator
2590 :    
2591 :     condmove of branch
2592 :    
2593 :     to cps. Generation of this is still buggy so it is currently
2594 :     disabled.
2595 :    
2596 :     ----------------------------------------------------------------------
2597 : george 1168 Name: Lal George
2598 :     Date: 2002/03/22 14:18:25 EST
2599 : george 1171 Tag: george-20020322-cps-branch-prob
2600 : george 1168 Description:
2601 :    
2602 : george 1171 Implemented the Ball-Larus branch prediction-heuristics, and
2603 : george 1168 incorporated graphical viewers for control flow graphs.
2604 :    
2605 : george 1171 Ball-Larus Heuristics:
2606 : george 1168 ---------------------
2607 :     See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
2608 :    
2609 :     By design it uses the Dempster-Shafer theory for combining
2610 :     probabilities. For example, in the function:
2611 :    
2612 :     fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
2613 :    
2614 :     the ball-larus heuristics predicts that the n=0 is unlikely
2615 :     (OH-heuristic), and the 'then' branch is unlikely because of the
2616 :     RH-heuristic -- giving the 'then' branch an even lower combined
2617 : george 1171 probability using the Dempster-Shafer theory.
2618 : george 1168
2619 :     Finally, John Reppy's loop analysis in MLRISC, further lowers the
2620 :     probability of the 'then' branch because of the loop in the else
2621 :     branch.
2622 :    
2623 :    
2624 :     Graphical Viewing:
2625 :     ------------------
2626 :     I merely plugged in Allen's graphical viewers into the compiler. The
2627 :     additional code is not much. At the top level, saying:
2628 :    
2629 :     Control.MLRISC.getFlag "cfg-graphical-view" := true;
2630 :    
2631 :     will display the graphical view of the control flow graph just before
2632 :     back-patching. daVinci must be in your path for this to work. If
2633 :     daVinci is not available, then the default viewer can be changed
2634 :     using:
2635 :    
2636 :     Control.MLRISC.getString "viewer"
2637 :    
2638 :     which can be set to "dot" or "vcg" for the corresponding viewers. Of
2639 :     course, these viewers must be in your path.
2640 :    
2641 :     The above will display the compilation unit at the level of clusters,
2642 :     many of which are small, boring, and un-interesting. Also setting:
2643 :    
2644 :     Control.MLRISC.getInt "cfg-graphical-view_size"
2645 :    
2646 :     will display clusters that are larger than the value set by the above.
2647 :    
2648 :    
2649 :     ----------------------------------------------------------------------
2650 : blume 1159 Name: Matthias Blume
2651 :     Date: 2002/03/21 22:20:00 EST
2652 :     Tag: blume-20020321-kmp-bugfix
2653 :     Description:
2654 :    
2655 :     Changed the interface to the KMP routine in PreString and fixed
2656 :     a minor bug in one place where it was used.
2657 :    
2658 :     ----------------------------------------------------------------------
2659 : leunga 1156 Name: Allen Leung
2660 : leunga 1158 Date: 2002/03/21 20:30:00 EST
2661 :     Tag: leunga-20020321-cfg
2662 :     Description:
2663 :    
2664 :     Fixed a potential problem in cfg edge splitting.
2665 :    
2666 :     ----------------------------------------------------------------------
2667 :     Name: Allen Leung
2668 : leunga 1156 Date: 2002/03/21 17:15:00 EST
2669 :     Tag: leunga-20020321-x86-fp-cfg
2670 :     Description:
2671 :    
2672 :     1. Recoded the buggy parts of x86-fp.
2673 :    
2674 :     a. All the block reordering code has been removed.
2675 :     We now depend on the block placement phases to do this work.
2676 :    
2677 :     b. Critical edge splitting code has been simplified and moved into the
2678 :     CFG modules, as where they belong.
2679 :    
2680 :     Both of these were quite buggy and complex. The code is now much, much
2681 :     simpler.
2682 :    
2683 :     2. X86 backend.
2684 :    
2685 :     a. Added instructions for 64-bit support. Instruction selection for
2686 :     64-bit has not been committed, however, since that
2687 :     requires changes to MLTREE which haven't been approved by
2688 :     Lal and John.
2689 :    
2690 :     b. Added support for FUCOMI and FUCOMIP when generating code for
2691 :     PentiumPro and above. We only generate these instructions in
2692 :     the fast-fp mode.
2693 :    
2694 :     c. Added cases for JP and JNP in X86FreqProps.
2695 :    
2696 :     3. CFG
2697 :    
2698 :     CFG now has a bunch of methods for edge splitting and merging.
2699 :    
2700 :     4. Machine description.
2701 :    
2702 :     John's simplification of MLTREE_BASIS.fcond broke a few machine
2703 :     description things:
2704 :    
2705 :     rtl-build.{sig,sml} and hppa.mdl fixed.
2706 :    
2707 :     NOTE: the machine description stuff in the repository is still broken.
2708 :     Again, I can't put my fixes in because that involves
2709 :     changes to MLTREE.
2710 :    
2711 :     ----------------------------------------------------------------------
2712 : blume 1145 Name: Matthias Blume
2713 : blume 1155 Date: 2002/03/20 15:55:00 EST
2714 :     Tag: blume-20020320-kmp
2715 :     Description:
2716 :    
2717 :     Implemented Knuth-Morris-Pratt string matching in PreString and used
2718 :     it for String.isSubstring, Substring.isSubstring, and
2719 :     Substring.position.
2720 :    
2721 :     (Might need some stress-testing. Simple examples worked fine.)
2722 :    
2723 :     ----------------------------------------------------------------------
2724 :     Name: Matthias Blume
2725 : blume 1152 Date: 2002/03/19 16:37:00 EST
2726 :     Tag: blume-20020319-witnesses
2727 :     Description:
2728 :    
2729 :     Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
2730 :    
2731 :     This implements a generic mechanism for changing constness qualifiers
2732 :     anywhere within big C types without resorting to outright "casts".
2733 :     (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
2734 :     modify the constness at the outermost level.)
2735 :     The implementation of "convert" is based on the idea of "witness"
2736 :     values -- values that are not used by the operation but whose types
2737 :     "testify" to their applicability. On the implementation side, "convert"
2738 :     is simply a projection (returning its second curried argument). With
2739 :     cross-module inlining, it should not result in any machine code being
2740 :     generated.
2741 :    
2742 :     ----------------------------------------------------------------------
2743 :     Name: Matthias Blume
2744 : blume 1148 Date: 2002/03/15 16:40:00 EST
2745 :     Tag: blume-20020315-basis
2746 :     Description:
2747 :    
2748 :     Provided (preliminary?) implementations for
2749 :    
2750 :     {String,Substring}.{concatWith,isSuffix,isSubstring}
2751 :    
2752 :     and
2753 :    
2754 :     Substring.full
2755 :    
2756 :     Those are in the Basis spec but they were missing in SML/NJ.
2757 :    
2758 :     ----------------------------------------------------------------------
2759 :     Name: Matthias Blume
2760 : blume 1145 Date: 2002/03/14 21:30:00 EST
2761 :     Tag: blume-20020314-controls
2762 :     Description:
2763 :    
2764 :     Controls:
2765 :     ---------
2766 :    
2767 :     1. Factored out the recently-added Controls : CONTROLS stuff and put
2768 :     it into its own library $/controls-lib.cm. The source tree for
2769 :     this is under src/smlnj-lib/Controls.
2770 :    
2771 :     2. Changed the names of types and functions in this interface, so they
2772 :     make a bit more "sense":
2773 :    
2774 :     module -> registry
2775 :     'a registry -> 'a group
2776 :    
2777 :     3. The interface now deals in ref cells only. The getter/setter interface
2778 :     is (mostly) gone.
2779 :    
2780 :     4. Added a function that lets one register an already-existing ref cell.
2781 :    
2782 :     5. Made the corresponding modifications to the rest of the code so that
2783 :     everything compiles again.
2784 :    
2785 :     6. Changed the implementation of Controls.MLRISC back to something closer
2786 :     to the original. In particular, this module (and therefore MLRISC)
2787 :     does not depend on Controls. There now is some link-time code in
2788 :     int-sys.sml that registers the MLRISC controls with the Controls
2789 :     module.
2790 :    
2791 :     CM:
2792 :     ---
2793 :    
2794 :     * One can now specify the lambda-split aggressiveness in init.cmi.
2795 :    
2796 :     ----------------------------------------------------------------------
2797 : leunga 1142 Name: Allen Leung
2798 :     Date: 2002/03/13 17:30:00 EST
2799 :     Tag: leunga-20020313-x86-fp-unary
2800 :     Description:
2801 :    
2802 :     Bug fix for:
2803 :    
2804 :     > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
2805 :     > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
2806 :     > - fun f(x,(y,z)) = Real.~ y;
2807 :     > [autoloading]
2808 :     > [autoloading done]
2809 :     > fchsl (%eax), 184(%esp)
2810 :     > Error: MLRisc bug: X86MCEmitter.emitInstr
2811 :     >
2812 :     > uncaught exception Error
2813 :     > raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
2814 :    
2815 :     The problem was that the code generator did not generate any fp registers
2816 :     in this case, and the ra didn't know that it needed to run the X86FP phase to
2817 :     translate the pseudo fp instruction. This only happened with unary fp
2818 :     operators in certain situations.
2819 :    
2820 :     ----------------------------------------------------------------------
2821 : blume 1137 Name: Matthias Blume
2822 : blume 1140 Date: 2002/03/13 14:00:00 EST
2823 :     Tag: blume-20020313-overload-etc
2824 :     Description:
2825 :    
2826 :     1. Added _overload as a synonym for overload for backward compatibility.
2827 :     (Control.overloadKW must be true for either version to be accepted.)
2828 :    
2829 :     2. Fixed bug in install script that caused more things to be installed
2830 :     than what was requested in config/targets.
2831 :    
2832 :     3. Made CM aware of the (_)overload construct so that autoloading
2833 :     works.
2834 :    
2835 :     ----------------------------------------------------------------------
2836 :     Name: Matthias Blume
2837 : blume 1138 Date: 2002/03/12 22:03:00 EST
2838 :     Tag: blume-20020312-url
2839 :     Description:
2840 :    
2841 :     Forgot to update BOOT and srcarchiveurl.
2842 :    
2843 :     ----------------------------------------------------------------------
2844 :     Name: Matthias Blume
2845 : blume 1137 Date: 2002/03/12 17:30:00 EST
2846 :     Tag: blume-20020312-version110392
2847 :     Description:
2848 :    
2849 :     Yet another version number bump (because of small changes to the
2850 :     binfile format). Version number is now 110.39.2. NEW BOOTFILES!
2851 :    
2852 :     Changes:
2853 :    
2854 :     The new pid generation scheme described a few weeks ago was overly
2855 :     complicated. I implemented a new mechanism that is simpler and
2856 :     provides a bit more "stability": Once CM has seen a compilation
2857 :     unit, it keeps its identity constant (as long as you do not delete
2858 :     those crucial CM/GUID/* files). This means that when you change
2859 : blume 1145 an interface, compile, then go back to the old interface, and
2860 : blume 1137 compile again, you arrive at the original pid.
2861 :    
2862 :     There now also is a mechanism that instructs CM to use the plain
2863 :     environment hash as a module's pid (effectively making its GUID
2864 :     the empty string). For this, "noguid" must be specified as an
2865 :     option to the .sml file in question within its .cm file.
2866 :     This is most useful for code that is being generated by tools such
2867 :     as ml-nlffigen (because during development programmers tend to
2868 :     erase the tool's entire output directory tree including CM's cached
2869 :     GUIDs). "noguid" is somewhat dangerous (since it can be used to locally
2870 :     revert to the old, broken behavior of SML/NJ, but in specific cases
2871 :     where there is no danger of interface confusion, its use is ok
2872 :     (I think).
2873 :    
2874 :     ml-nlffigen by default generates "noguid" annotations. They can be
2875 :     turned off by specifying -guid in its command line.
2876 :    
2877 :     ----------------------------------------------------------------------
2878 : george 1136 Name: Lal George
2879 :     Date: 2002/03/12 12 14:42:36 EST
2880 :     Tag: george-20020312-frequency-computation
2881 :     Description:
2882 :    
2883 :     Integrated jump chaining and static block frequency into the
2884 :     compiler. More details and numbers later.
2885 : leunga 1025
2886 : george 1003 ----------------------------------------------------------------------
2887 : george 1133 Name: Lal George
2888 :     Date: 2002/03/11 11 22:38:53 EST
2889 :     Tag: george-20020311-jump-chain-elim
2890 :     Description:
2891 :    
2892 :     Tested the jump chain elimination on all architectures (except the
2893 :     hppa). This is on by default right now and is profitable for the
2894 :     alpha and x86, however, it may not be profitable for the sparc and ppc
2895 :     when compiling the compiler.
2896 :    
2897 :     The gc test will typically jump to a label at the end of the cluster,
2898 :     where there is another jump to an external cluster containing the actual
2899 :     code to invoke gc. This is to allow factoring of common gc invocation
2900 :     sequences. That is to say, we generate:
2901 :    
2902 :     f:
2903 :     testgc
2904 :     ja L1 % jump if above to L1
2905 :    
2906 :     L1:
2907 :     jmp L2
2908 :    
2909 :    
2910 :     After jump chain elimination the 'ja L1' instructions is converted to
2911 :     'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end
2912 :     up being implemented in their long form (if L2 is far away) using:
2913 :    
2914 :     jbe L3 % jump if below or equal to L3
2915 :     jmp L2
2916 :     L3:
2917 :     ...
2918 :    
2919 :    
2920 :     For large compilation units L2 may be far away.
2921 :    
2922 :    
2923 :     ----------------------------------------------------------------------
2924 : blume 1132 Name: Matthias Blume
2925 :     Date: 2002/03/11 13:30:00 EST
2926 :     Tag: blume-20020311-mltreeeval
2927 :     Description:
2928 :    
2929 :     A functor parameter was missing.
2930 :    
2931 :     ----------------------------------------------------------------------
2932 : leunga 1130 Name: Allen Leung
2933 : leunga 1131 Date: 2002/03/11 10:30:00 EST
2934 : leunga 1142 Tag: leunga-20020311-runtime-string0
2935 : leunga 1131 Description:
2936 :    
2937 :     The representation of the empty string now points to a
2938 :     legal null terminated C string instead of unit. It is now possible
2939 :     to convert an ML string into C string with InlineT.CharVector.getData.
2940 :     This compiles into one single machine instruction.
2941 :    
2942 :     ----------------------------------------------------------------------
2943 :     Name: Allen Leung
2944 : leunga 1130 Date: 2002/03/10 23:55:00 EST
2945 :     Tag: leunga-20020310-x86-call
2946 :     Description:
2947 :    
2948 :     Added machine generation for CALL instruction (relative displacement mode)
2949 :    
2950 :     ----------------------------------------------------------------------
2951 : blume 1128 Name: Matthias Blume
2952 :     Date: 2002/03/08 16:05:00
2953 :     Tag: blume-20020308-entrypoints
2954 :     Description:
2955 :    
2956 :     Version number bumped to 110.39.1. NEW BOOTFILES!
2957 :    
2958 :     Entrypoints: non-zero offset into a code object where execution should begin.
2959 :    
2960 :     - Added the notion of an entrypoint to CodeObj.
2961 :     - Added reading/writing of entrypoint info to Binfile.
2962 :     - Made runtime system bootloader aware of entrypoints.
2963 :     - Use the address of the label of the first function given to mlriscGen
2964 :     as the entrypoint. This address is currently always 0, but it will
2965 :     not be 0 once we turn on block placement.
2966 :     - Removed the linkage cluster code (which was The Other Way(tm) of dealing
2967 :     with entry points) from mlriscGen.
2968 :    
2969 :     ----------------------------------------------------------------------
2970 : leunga 1127 Name: Allen Leung
2971 :     Date: 2002/03/07 20:45:00 EST
2972 :     Tag: leunga-20020307-x86-cmov
2973 :     Description:
2974 :    
2975 :     Bug fixes for CMOVcc on x86.
2976 :    
2977 :     1. Added machine code generation for CMOVcc
2978 :     2. CMOVcc is now generated in preference over SETcc on PentiumPro or above.
2979 :     3. CMOVcc cannot have an immediate operand as argument.
2980 :    
2981 :     ----------------------------------------------------------------------
2982 : blume 1126 Name: Matthias Blume
2983 :     Date: 2002/03/07 16:15:00 EST
2984 :     Tag: blume-20020307-controls
2985 :     Description:
2986 :    
2987 :     This is a very large but mostly boring patch which makes (almost)
2988 :     every tuneable compiler knob (i.e., pretty much everything under
2989 :     Control.* plus a few other things) configurable via both the command
2990 :     line and environment variables in the style CM did its configuration
2991 :     until now.
2992 :    
2993 :     Try starting sml with '-h' (or, if you are brave, '-H')
2994 :    
2995 :     To this end, I added a structure Controls : CONTROLS to smlnj-lib.cm which
2996 :     implements the underlying generic mechanism.
2997 :    
2998 :     The interface to some of the existing such facilities has changed somewhat.
2999 :     For example, the MLRiscControl module now provides mkFoo instead of getFoo.
3000 :     (The getFoo interface is still there for backward-compatibility, but its
3001 :     use is deprecated.)
3002 :    
3003 :     The ml-build script passes -Cxxx=yyy command-line arguments through so
3004 :     that one can now twiddle the compiler settings when using this "batch"
3005 :     compiler.
3006 :    
3007 :     TODO items:
3008 :    
3009 :     We should go through and throw out all controls that are no longer
3010 :     connected to anything. Moreover, we should go through and provide
3011 :     meaningful (and correct!) documentation strings for those controls
3012 :     that still are connected.
3013 :    
3014 :     Currently, multiple calls to Controls.new are accepted (only the first
3015 :     has any effect). Eventually we should make sure that every control
3016 :     is being made (via Controls.new) exactly once. Future access can then
3017 :     be done using Controls.acc.
3018 :    
3019 :     Finally, it would probably be a good idea to use the getter-setter
3020 :     interface to controls rather than ref cells. For the time being, both
3021 :     styles are provided by the Controls module, but getter-setter pairs are
3022 :     better if thread-safety is of any concern because they can be wrapped.
3023 :    
3024 :     *****************************************
3025 :    
3026 :     One bug fix: The function blockPlacement in three of the MLRISC
3027 :     backpatch files used to be hard-wired to one of two possibilities at
3028 :     link time (according to the value of the placementFlag). But (I
3029 :     think) it should rather sense the flag every time.
3030 :    
3031 :     *****************************************
3032 :    
3033 :     Other assorted changes (by other people who did not supply a HISTORY entry):
3034 :    
3035 :     1. the cross-module inliner now works much better (Monnier)
3036 :     2. representation of weights, frequencies, and probabilities in MLRISC
3037 :     changed in preparation of using those for weighted block placement
3038 :     (Reppy, George)
3039 :    
3040 :     ----------------------------------------------------------------------
3041 : george 1116 Name: Lal George
3042 : george 1124 Date: 2002/03/07 14:44:24 EST 2002
3043 :     Tag: george-20020307-weighted-block-placement
3044 :    
3045 :     Tested the weighted block placement optimization on all architectures
3046 :     (except the hppa) using AMPL to generate the block and edge frequencies.
3047 :     Changes were required in the machine properties to correctly
3048 :     categorize trap instructions. There is an MLRISC flag
3049 :     "weighted-block-placement" that can be used to enable weighted block
3050 :     placement, but this will be ineffective without block/edge
3051 :     frequencies (coming soon).
3052 :    
3053 :    
3054 :     ----------------------------------------------------------------------
3055 :     Name: Lal George
3056 : george 1116 Date: 2002/03/05 17:24:48 EST
3057 :     Tag: george-20020305-linkage-cluster
3058 :    
3059 : george 1124 In order to support the block placement optimization, a new cluster
3060 :     is generated as the very first cluster (called the linkage cluster).
3061 :     It contains a single jump to the 'real' entry point for the compilation
3062 :     unit. Block placement has no effect on the linkage cluster itself, but
3063 :     all the other clusters have full freedom in the manner in which they
3064 :     reorder blocks or functions.
3065 : george 1116
3066 :     On the x86 the typical linkage code that is generated is:
3067 :     ----------------------
3068 :     .align 2
3069 :     L0:
3070 :     addl $L1-L0, 72(%esp)
3071 : george 1124 jmp L1
3072 : george 1116
3073 :    
3074 :     .align 2
3075 :     L1:
3076 :     ----------------------
3077 :    
3078 :     72(%esp) is the memory location for the stdlink register. This
3079 :     must contain the address of the CPS function being called. In the
3080 : george 1124 above example, it contains the address of L0; before
3081 : george 1116 calling L1 (the real entry point for the compilation unit), it
3082 :     must contain the address for L1, and hence
3083 :    
3084 :     addl $L1-L0, 72(%esp)
3085 :    
3086 : george 1124 I have tested this on all architectures except the hppa.The increase
3087 :     in code size is of course negligible
3088 : george 1116
3089 :     ----------------------------------------------------------------------
3090 : leunga 1115 Name: Allen Leung
3091 :     Date: 2002/03/03 13:20:00 EST
3092 :     Tag: leunga-20020303-mlrisc-tools
3093 :    
3094 :     Added #[ ... ] expressions to mlrisc tools
3095 :    
3096 :     ----------------------------------------------------------------------
3097 : blume 1096 Name: Matthias Blume
3098 : blume 1098 Date: 2002/02/27 12:29:00 EST
3099 :     Tag: blume-20020227-cdebug
3100 :     Description:
3101 :    
3102 :     - made types in structure C and C_Debug to be equal
3103 :     - got rid of code duplication (c-int.sml vs. c-int-debug.sml)
3104 :     - there no longer is a C_Int_Debug (C_Debug is directly derived from C)
3105 :    
3106 :     ----------------------------------------------------------------------
3107 :     Name: Matthias Blume
3108 : blume 1096 Date: 2002/02/26 12:00:00 EST
3109 :     Tag: blume-20020226-ffi
3110 :     Description:
3111 :    
3112 :     1. Fixed a minor bug in CM's "noweb" tool:
3113 :     If numbering is turned off, then truly don't number (i.e., do not
3114 :     supply the -L option to noweb). The previous behavior was to supply
3115 :     -L'' -- which caused noweb to use the "default" line numbering scheme.
3116 :     Thanks to Chris Richards for pointing this out (and supplying the fix).
3117 :    
3118 :     2. Once again, I reworked some aspects of the FFI:
3119 :    
3120 :     A. The incomplete/complete type business:
3121 :    
3122 :     - Signatures POINTER_TO_INCOMPLETE_TYPE and accompanying functors are
3123 :     gone!
3124 :     - ML types representing an incomplete type are now *equal* to
3125 :     ML types representing their corresponding complete types (just like
3126 :     in C). This is still safe because ml-nlffigen will not generate
3127 :     RTTI for incomplete types, nor will it generate functions that
3128 :     require access to such RTTI. But when ML code generated from both
3129 :     incomplete and complete versions of the C type meet, the ML types
3130 :     are trivially interoperable.
3131 :    
3132 :     NOTE: These changes restore the full generality of the translation
3133 :     (which was previously lost when I eliminated functorization)!
3134 :    
3135 :     B. Enum types:
3136 :    
3137 :     - Structure C now has a type constructor "enum" that is similar to
3138 :     how the "su" constructor works. However, "enum" is not a phantom
3139 :     type because each "T enum" has values (and is isomorphic to
3140 :     MLRep.Signed.int).
3141 :     - There are generic access operations for enum objects (using
3142 :     MLRep.Signed.int).
3143 :     - ml-nlffigen will generate a structure E_foo for each "enum foo".
3144 :     * The structure contains the definition of type "mlrep" (the ML-side
3145 :     representation type of the enum). Normally, mlrep is the same
3146 :     as "MLRep.Signed.int", but if ml-nlffigen was invoked with "-ec",
3147 :     then mlrep will be defined as a datatype -- thus facilitating
3148 :     pattern matching on mlrep values.
3149 :     ("-ec" will be suppressed if there are duplicate values in an
3150 :     enumeration.)
3151 :     * Constructors ("-ec") or values (no "-ec") e_xxx of type mlrep
3152 :     will be generated for each C enum constant xxx.
3153 :     * Conversion functions m2i and i2m convert between mlrep and
3154 :     MLRep.Signed.int. (Without "-ec", these functions are identities.)
3155 :     * Coversion functions c and ml convert between mlrep and "tag enum".
3156 :     * Access functions (get/set) fetch and store mlrep values.
3157 :     - By default (unless ml-nlffigen was invoked with "-nocollect"), unnamed
3158 :     enumerations are merged into one single enumeration represented by
3159 :     structure E_'.
3160 :    
3161 :     ----------------------------------------------------------------------
3162 : leunga 1080 Name: Allen Leung
3163 : leunga 1094 Date: 2002/02/25 04:45:00 EST
3164 :     Tag: leunga-20020225-cps-spill
3165 :    
3166 :     This is a new implementation of the CPS spill phase.
3167 :     The new phase is in the new file compiler/CodeGen/cpscompile/spill-new.sml
3168 :     In case of problems, replace it with the old file spill.sml
3169 :    
3170 :     The current compiler runs into some serious performance problems when
3171 :     constructing a large record. This can happen when we try to compile a
3172 :     structure with many items. Even a very simple structure like the following
3173 :     makes the compiler slow down.
3174 :    
3175 :     structure Foo = struct
3176 :     val x_1 = 0w1 : Word32.int
3177 :     val x_2 = 0w2 : Word32.int
3178 :     val x_3 = 0w3 : Word32.int
3179 :     ...
3180 :     val x_N = 0wN : Word32.int
3181 :     end
3182 :    
3183 :     The following table shows the compile time, from N=1000 to N=4000,
3184 :     with the old compiler:
3185 :    
3186 :     N
3187 :     1000 CPS 100 spill 0.04u 0.00s 0.00g
3188 :     MLRISC ra 0.06u 0.00s 0.05g
3189 :     (spills = 0 reloads = 0)
3190 :     TOTAL 0.63u 0.07s 0.21g
3191 :    
3192 :     1100 CPS 100 spill 8.25u 0.32s 0.64g
3193 :     MLRISC ra 5.68u 0.59s 3.93g
3194 :     (spills = 0 reloads = 0)
3195 :     TOTAL 14.71u 0.99s 4.81g
3196 :    
3197 :     1500 CPS 100 spill 58.55u 2.34s 1.74g
3198 :     MLRISC ra 5.54u 0.65s 3.91g
3199 :     (spills = 543 reloads = 1082)
3200 :     TOTAL 65.40u 3.13s 6.00g
3201 :    
3202 :     2000 CPS 100 spill 126.69u 4.84s 3.08g
3203 :     MLRISC ra 0.80u 0.10s 0.55g
3204 :     (spills = 42 reloads = 84)
3205 :     TOTAL 129.42u 5.10s 4.13g
3206 :    
3207 :     3000 CPS 100 spill 675.59u 19.03s 11.64g
3208 :     MLRISC ra 2.69u 0.27s 1.38g
3209 :     (spills = 62 reloads = 124)
3210 :     TOTAL 682.48u 19.61s 13.99g
3211 :    
3212 :     4000 CPS 100 spill 2362.82u 56.28s 43.60g
3213 :     MLRISC ra 4.96u 0.27s 2.72g
3214 :     (spills = 85 reloads = 170)
3215 :     TOTAL 2375.26u 57.21s 48.00g
3216 :    
3217 :     As you can see the old cps spill module suffers from some serious
3218 : leunga 1115 performance problem. But since I cannot decipher the old code fully,
3219 :     instead of patching the problems up, I'm reimplementing it
3220 : leunga 1094 with a different algorithm. The new code is more modular,
3221 :     smaller when compiled, and substantially faster
3222 :     (O(n log n) time and O(n) space). Timing of the new spill module:
3223 :    
3224 :     4000 CPS 100 spill 0.02u 0.00s 0.00g
3225 :     MLRISC ra 0.25u 0.02s 0.15g
3226 :     (spills=1 reloads=3)
3227 :     TOTAL 7.74u 0.34s 1.62g
3228 :    
3229 :     Implementation details:
3230 :    
3231 :     As far as I can tell, the purpose of the CPS spill module is to make sure the
3232 :     number of live variables at any program point (the bandwidth)
3233 :     does not exceed a certain limit, which is determined by the
3234 :     size of the spill area.
3235 :    
3236 :     When the bandwidth is too large, we decrease the register pressure by
3237 :     packing live variables into spill records. How we achieve this is
3238 :     completely different than what we did in the old code.
3239 :    
3240 :     First, there is something about the MLRiscGen code generator
3241 :     that we should be aware of:
3242 :    
3243 :     o MLRiscGen performs code motion!
3244 :    
3245 :     In particular, it will move floating point computations and
3246 :     address computations involving only the heap pointer to
3247 :     their use sites (if there is only a single use).
3248 :     What this means is that if we have a CPS record construction
3249 :     statement
3250 :    
3251 :     RECORD(k,vl,w,e)
3252 :    
3253 :     we should never count the new record address w as live if w
3254 :     has only one use (which is often the case).
3255 :    
3256 :     We should do something similar to floating point, but the transformation
3257 :     there is much more complex, so I won't deal with that.
3258 :    
3259 :     Secondly, there are now two new cps primops at our disposal:
3260 :    
3261 :     1. rawrecord of record_kind option
3262 :     This pure operator allocates some uninitialized storage from the heap.
3263 :     There are two forms:
3264 :    
3265 :     rawrecord NONE [INT n] allocates a tagless record of length n
3266 :     rawrecord (SOME rk) [INT n] allocates a tagged record of length n
3267 :     and initializes the tag.
3268 :    
3269 :     2. rawupdate of cty
3270 :     rawupdate cty (v,i,x)
3271 :     Assigns to x to the ith component of record v.
3272 :     The storelist is not updated.
3273 :    
3274 :     We use these new primops for both spilling and increment record construction.
3275 :    
3276 :     1. Spilling.
3277 :    
3278 :     This is implemented with a linear scan algorithm (but generalized
3279 :     to trees). The algorithm will create a single spill record at the
3280 :     beginning of the cps function and use rawupdate to spill to it,
3281 :     and SELECT or SELp to reload from it. So both spills and reloads
3282 :     are fine-grain operations. In contrast, in the old algorithm
3283 :     "spills" have to be bundled together in records.
3284 :    
3285 :     Ideally, we should sink the spill record construction to where
3286 :     it is needed. We can even split the spill record into multiple ones
3287 :     at the places where they are needed. But CPS is not a good
3288 :     representation for global code motion, so I'll keep it simple and
3289 :     am not attempting this.
3290 :    
3291 :     2. Incremental record construction (aka record splitting).
3292 :    
3293 :     Long records with many component values which are simulatenously live
3294 :     (recall that single use record addresses are not considered to
3295 :     be live) are constructed with rawrecord and rawupdate.
3296 :     We allocate space on the heap with rawrecord first, then gradually
3297 :     fill it in with rawupdate. This is the technique suggested to me
3298 :     by Matthias.
3299 :    
3300 :     Some restrictions on when this is applicable:
3301 :     1. It is not a VECTOR record. The code generator currently does not handle
3302 :     this case. VECTOR record uses double indirection like arrays.
3303 :     2. All the record component values are defined in the same "basic block"
3304 :     as the record constructor. This is to prevent speculative
3305 :     record construction.
3306 :    
3307 :     ----------------------------------------------------------------------
3308 :     Name: Allen Leung
3309 : leunga 1086 Date: 2002/02/22 01:02:00 EST
3310 :     Tag: leunga-20020222-mlrisc-tools
3311 :    
3312 :     Minor bug fixes in the parser and rewriter
3313 :    
3314 :     ----------------------------------------------------------------------
3315 :     Name: Allen Leung
3316 : leunga 1085 Date: 2002/02/21 20:20:00 EST
3317 :     Tag: leunga-20020221-peephole
3318 :    
3319 :     Regenerated the peephole files. Some contained typos in the specification
3320 :     and some didn't compile because of pretty printing bugs in the old version
3321 :     of 'nowhere'.
3322 :    
3323 :     ----------------------------------------------------------------------
3324 :     Name: Allen Leung
3325 : leunga 1079 Date: 2002/02/19 20:20:00 EST
3326 :     Tag: leunga-20020219-mlrisc-tools
3327 :     Description:
3328 :    
3329 :     Minor bug fixes to the mlrisc-tools library:
3330 :    
3331 :     1. Fixed up parsing colon suffixed keywords
3332 :     2. Added the ability to shut the error messages up
3333 :     3. Reimplemented the pretty printer and fixed up/improved
3334 :     the pretty printing of handle and -> types.
3335 :     4. Fixed up generation of literal symbols in the nowhere tool.
3336 :     5. Added some SML keywords to to sml.sty
3337 :    
3338 :     ----------------------------------------------------------------------
3339 :     Name: Matthias Blume
3340 : blume 1078 Date: 2002/02/19 16:20:00 EST
3341 :     Tag: blume-20020219-cmffi
3342 :     Description:
3343 :    
3344 :     A wild mix of changes, some minor, some major:
3345 :    
3346 :     * All C FFI-related libraries are now anchored under $c:
3347 :     $/c.cm --> $c/c.cm
3348 :     $/c-int.cm --> $c/internals/c-int.cm
3349 :     $/memory.cm --> $c/memory/memory.cm
3350 :    
3351 :     * "make" tool (in CM) now treats its argument pathname slightly
3352 :     differently:
3353 :     1. If the native expansion is an absolute name, then before invoking
3354 :     the "make" command on it, CM will apply OS.Path.mkRelative
3355 :     (with relativeTo = OS.FileSys.getDir()) to it.
3356 :     2. The argument will be passed through to subsequent phases of CM
3357 :     processing without "going native". In particular, if the argument
3358 :     was an anchored path, then "make" will not lose track of that anchor.
3359 :    
3360 :     * Compiler backends now "know" their respective C calling conventions
3361 :     instead of having to be told about it by ml-nlffigen. This relieves
3362 :     ml-nlffigen from one of its burdens.
3363 :    
3364 :     * The X86Backend has been split into X86CCallBackend and X86StdCallBackend.
3365 :    
3366 :     * Export C_DEBUG and C_Debug from $c/c.cm.
3367 :    
3368 :     * C type encoding in ml-nlffi-lib has been improved to model the conceptual
3369 :     subtyping relationship between incomplete pointers and their complete
3370 :     counterparts. For this, ('t, 'c) ptr has been changed to 'o ptr --
3371 :     with the convention of instantiating 'o with ('t, 'c) obj whenever
3372 :     the pointer target type is complete. In the incomplete case, 'o
3373 :     will be instantiated with some "'c iobj" -- a type obtained by
3374 :     using one of the functors PointerToIncompleteType or PointerToCompleteType.
3375 :    
3376 :     Operations that work on both incomplete and complete pointer types are
3377 :     typed as taking an 'o ptr while operations that require the target to
3378 :     be known are typed as taking some ('t, 'c) obj ptr.
3379 :    
3380 :     voidptr is now a bit "more concrete", namely "type voidptr = void ptr'"
3381 :     where void is an eqtype without any values. This makes it possible
3382 :     to work on voidptr values using functions meant to operate on light
3383 :     incomplete pointers.
3384 :    
3385 :     * As a result of the above, signature POINTER_TO_INCOMPLETE_TYPE has
3386 :     been vastly simplified.
3387 :    
3388 :     ----------------------------------------------------------------------
3389 :     Name: Matthias Blume
3390 : blume 1076 Date: 2002/02/19 10:48:00 EST
3391 :     Tag: blume-20020219-pqfix
3392 :     Description:
3393 :    
3394 :     Applied Chris Okasaki's bug fix for priority queues.
3395 :    
3396 :     ----------------------------------------------------------------------
3397 :     Name: Matthias Blume
3398 : blume 1073 Date: 2002/02/15 17:05:00
3399 : blume 1069 Tag: Release_110_39
3400 :     Description:
3401 :    
3402 : blume 1073 Last-minute retagging is becoming a tradition... :-(
3403 :    
3404 :     This is the working release 110.39.
3405 :    
3406 :     ----------------------------------------------------------------------
3407 :     Name: Matthias Blume
3408 :     Date: 2002/02/15 16:00:00 EST
3409 :     Tag: Release_110_39-orig
3410 :     Description:
3411 :    
3412 : blume 1069 Working release 110.39. New bootfiles.
3413 :    
3414 : blume 1073 (Update: There was a small bug in the installer so it wouldn't work
3415 :     with all shells. So I retagged. -Matthias)
3416 :    
3417 : blume 1069 ----------------------------------------------------------------------
3418 :     Name: Matthias Blume
3419 : blume 1068 Date: 2002/02/15 14:17:00 EST
3420 :     Tag: blume-20020215-showbindings
3421 :     Description:
3422 :    
3423 :     Added EnvRef.listBoundSymbols and CM.State.showBindings. Especially
3424 :     the latter can be useful for exploring what bindings are available at
3425 :     the interactive prompt. (The first function returns only the list
3426 :     of symbols that are really bound, the second prints those but also the
3427 :     ones that CM's autoloading mechanism knows about.)
3428 :    
3429 :     ----------------------------------------------------------------------
3430 :     Name: Matthias Blume
3431 : blume 1067 Date: 2002/02/15 12:08:00 EST
3432 :     Tag: blume-20020215-iptrs
3433 :     Description:
3434 :    
3435 :     Two improvements to ml-nlffigen:
3436 :    
3437 :     1. Write files only if they do not exist or if their current contents
3438 :     do not coincide with what's being written. (That is, avoid messing
3439 :     with the time stamps unless absolutely necessary.)
3440 :    
3441 :     2. Implement a "repository" mechanism for generated files related
3442 :     to "incomplete pointer types". See the README file for details.
3443 :    
3444 :     ----------------------------------------------------------------------
3445 :     Name: Matthias Blume
3446 : blume 1066 Date: 2002/02/14 11:50:00 EST
3447 :     Tag: blume-20020214-quote
3448 :     Description:
3449 :    
3450 :     Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm). This is required
3451 :     because of the new and improved tag generation scheme. (Thanks to Allen
3452 :     Leung for pointing it out.)
3453 :    
3454 :     ----------------------------------------------------------------------
3455 : george 1065 Name: Lal George
3456 :     Date: 2002/02/14 09:55:27 EST 2002
3457 :     Tag: george-20020214-isabelle-bug
3458 :     Description:
3459 :    
3460 :     Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
3461 :     of Isabelle on the x86.
3462 :    
3463 :     From Allen:
3464 :     -----------
3465 :     I've found the problem:
3466 :    
3467 :     in ra-core.sml, I use the counter "blocked" to keep track of the
3468 :     true number of elements in the freeze queue. When the counter goes
3469 :     to zero, I skip examining the queue. But I've messed up the
3470 :     bookkeeping in combine():
3471 :    
3472 :     else ();
3473 :     case !ucol of
3474 :     PSEUDO => (if !cntv > 0 then
3475 :     (if !cntu > 0 then blocked := !blocked - 1 else ();
3476 :     ^^^^^^^^^^^^^^^^^^^^^^^
3477 :     moveu := mergeMoveList(!movev, !moveu)
3478 :     )
3479 :     else ();
3480 :    
3481 :     combine() is called to coalesce two nodes u and v.
3482 :     I think I was thinking that if the move counts of u and v are both
3483 :     greater than zero then after they are coalesced then one node is
3484 :     removed from the freeze queue. Apparently I was thinking that
3485 :     both u and v are of low degree, but that's clearly not necessarily true.
3486 :    
3487 :    
3488 :     02/12/2002:
3489 :     Here's the patch. HOL now compiles.
3490 :    
3491 :     I don't know how this impact on performance (compile
3492 :     time or runtime). This bug caused the RA (especially on the x86)
3493 :     to go thru the potential spill phase when there are still nodes on the
3494 :     freeze queue.
3495 :    
3496 :    
3497 :    
3498 :    
3499 :     ----------------------------------------------------------------------
3500 : blume 1058 Name: Matthias Blume
3501 : blume 1064 Date: 2002/02/13 22:40:00 EST
3502 :     Tag: blume-20020213-fptr-rtti
3503 :     Description:
3504 :    
3505 :     Fixed a bug in ml-nlffigen that was introduced with one of the previous
3506 :     updates.
3507 :    
3508 :     ----------------------------------------------------------------------
3509 :     Name: Matthias Blume
3510 : blume 1063 Date: 2002/02/13 16:41:00 EST
3511 :     Tag: blume-20020213-cmlpq
3512 :     Description:
3513 :    
3514 :     Added new priority queue export symbols (which have just been added to
3515 :     smlnj-lib.cm) to CML's version of smlnj-lib.cm. (Otherwise CML would
3516 :     not compile and the installer would choke.)
3517 :    
3518 :     ----------------------------------------------------------------------
3519 :     Name: Matthias Blume
3520 : blume 1062 Date: 2002/02/13 16:15:00 EST
3521 :     Tag: blume-20020213-various
3522 :     Description:
3523 :    
3524 :     1. More tweaks to ml-nlffigen:
3525 :    
3526 :     - better internal datastructures (resulting in slight speedup)
3527 :     - "-match" option requires exact match
3528 :     - "localized" gensym counters (untagged structs/unions nested within
3529 :     other structs/unions or within typedefs get a fresh counter; their
3530 :     tag will be prefixed by a concatenation of their parents' tags)
3531 :     - bug fixes (related to calculation of transitive closure of types
3532 :     to be included in the output)
3533 :    
3534 :     2. Minor Basis updates:
3535 :    
3536 :     - added implementations for List.collate and Option.app
3537 :    
3538 :     ----------------------------------------------------------------------
3539 :     Name: Matthias Blume
3540 : blume 1060 Date: 2002/02/11 15:55:00 EST
3541 :     Tag: blume-20020211-gensym
3542 :     Description:
3543 :    
3544 :     Added a "-gensym" option to command line of ml-nlffigen. This can be
3545 :     used to specify a "stem" -- a string that is inserted in all "gensym'd"
3546 :     names (ML structure names that correspond to unnamed C structs, unions,
3547 :     and enums), so that separate runs of ml-nlffigen do not clash.
3548 :    
3549 :     ----------------------------------------------------------------------
3550 :     Name: Matthias Blume
3551 : blume 1059 Date: 2002/02/11 12:05:00 EST
3552 :     Tag: blume-20020211-gensml
3553 :     Description:
3554 :    
3555 :     A quick fix for a problem with GenSML (in the pgraph-util library):
3556 :     Make generation of toplevel "local" optional. (Strictly speaking,
3557 :     signature definitions within "local" are not legal SML.)
3558 :    
3559 :     Other than that: updates to INSTALL and cm/TODO.
3560 :    
3561 :     ----------------------------------------------------------------------
3562 :     Name: Matthias Blume
3563 : blume 1058 Date: 2002/02/08 15:00:00 EST
3564 :     Tag: blume-20020208-uniquepid
3565 :     Description:
3566 :    
3567 :     0. Version number has been bumped to 110.38.1. NEW BOOTFILES!!!
3568 :    
3569 :     1. The installer (config/install.sh) has gotten smarter:
3570 :    
3571 :     - Configuration options are a bit easier to specify now
3572 :     (in config/targets).
3573 :     - Bug in recognizing .tar.bz2 files fixed.
3574 :     - Installer automatically resolves dependencies between
3575 :     configuration options (e.g., if you ask for eXene, you will
3576 :     also get cml -- regardless whether you asked for it or not).
3577 :     - Installer can run in "quieter mode" by setting the environment
3578 :     variable INSTALL_QUIETLY to "true". "Quieter" does not mean
3579 :     "completely silent", though.
3580 :     - Build HashCons library as part of smlnj-lib.
3581 :    
3582 :     2. A new scheme for assigning persistent identifiers to compilation
3583 :     units (and, by extension, to types etc.) has been put into place.
3584 :     This fixes a long-standing bug where types and even dynamic values
3585 :     can get internally confused, thereby compromising type safety
3586 :     (abstraction) and dynamic correctness. See
3587 :    
3588 :     http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
3589 :    
3590 :     for an example of how things could go wrong until now.
3591 :    
3592 :     The downside of the new scheme is that pids are not quite as
3593 :     persistent as they used to be: CM will generate a fresh pid
3594 :     for every compilation unit that it thinks it sees for the first
3595 :     time. That means that if you compile starting from a clean, fresh
3596 :     source tree at two different times, you end up with different
3597 :     binaries.
3598 :    
3599 :     Cutoff recompilation, however, has not been compromised because
3600 :     CM keeps pid information in special caches between runs.
3601 :    
3602 :     ----------------------------------------------------------------------
3603 : george 1053 Name: Lal George
3604 : george 1055 Date: 2002/02/07 15:34:13 EST 2002
3605 :     Tag: <none>
3606 :     Description:
3607 :    
3608 :     Compilers that generate assembly code may produce global labels
3609 :     whose value is resolved at link time. The various peephole optimization
3610 :     modules did not take this in account.
3611 :    
3612 :     TODO. The Labels.addrOf function should really return an option
3613 :     type so that clients are forced to deal with this issue, rather
3614 :     than an exception being raised.
3615 :    
3616 :     ----------------------------------------------------------------------
3617 :     Name: Lal George
3618 : george 1053 Date: 2002/02/06 13:55:02 EST
3619 :     Tag: george-20020206-ra-breakup
3620 :     Description:
3621 :    
3622 :     1. A bug fix from Allen.
3623 :    
3624 :     A typo causes extra fstp %st(0)'s to be generated at compensation
3625 :     edges, which might cause stack underflow traps at runtime. This
3626 :     occurs in fft where there are extraneous fstps right before the 'into'
3627 :     trap instruction (in this case they are harmless since none of the
3628 :     integers overflow.)
3629 :    
3630 : george 1054 2. Pulled out various utility modules that were embedded in the modules
3631 : george 1053 of the register allocator. I need these modules for other purposes, but
3632 : george 1054 they are not complete enough to put into a library (just yet).
3633 : george 1053 ----------------------------------------------------------------------
3634 : blume 1049 Name: Matthias Blume
3635 :     Date: 2002/01/31 16:05:00 EST
3636 :     Tag: blume-20020131-sparc-ccalls
3637 :     Description:
3638 :    
3639 :     1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
3640 :     of extra stack space by mistake. Fixed.
3641 :    
3642 :     2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
3643 :    
3644 :     ----------------------------------------------------------------------
3645 : leunga 1048 Name: Allen Leung
3646 :     Date: 2002/01/30
3647 :     Tag: leunga-20020130-nowhere-bug-fix
3648 :     Description:
3649 :    
3650 :     MLRISC bug fixes:
3651 :     1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
3652 :     2. MachineInt.fromString was negating its value.
3653 :    
3654 :     ----------------------------------------------------------------------
3655 : blume 1039 Name: Matthias Blume
3656 : blume 1047 Date: 2002/01/29
3657 :     Tag: blume-20020129-INSTALL
3658 :     Description:
3659 :    
3660 :     - Added somewhat detailed installation instructions (file INSTALL).
3661 :     - Fixed curl-detection bug in config/install.sh.
3662 :     - It is now possible to select the URL getter using the URLGETTER
3663 :     environment variable:
3664 :    
3665 :     not set / "unknown" --> automatic detection (script tries wget,
3666 :     curl, and lynx)
3667 :     "wget" / "curl" / "lynx" --> use the specified program (script "knows"
3668 :     how to properly invoke them)
3669 :     other --> use $URLGETTER directly, it must take
3670 :     precisely two command-line arguments
3671 :     (source URL and destination file name)
3672 :    
3673 :     ----------------------------------------------------------------------
3674 :     Name: Matthias Blume
3675 : blume 1044 Date: 2002/01/28
3676 : blume 1045 Tag: blume-20020128-sparc-ccalls
3677 :     Description:
3678 :    
3679 :     - Fixed problem with calculation of "used" registers in sparc-c-calls.
3680 :     - Make use of the allocParam argument in sparc-c-calls.
3681 :    
3682 :     ----------------------------------------------------------------------
3683 :     Name: Matthias Blume
3684 :     Date: 2002/01/28
3685 : blume 1044 Tag: blume-20020128-allocParam
3686 :     Description:
3687 :    
3688 :     John Reppy: Changes c-calls API to accept client-callback for
3689 :     allocating extra stack space.
3690 :     me: Corresponding changes to mlriscGen (using a dummy argument that
3691 :     does not change the current behavior).
3692 :    
3693 :     ----------------------------------------------------------------------
3694 :     Name: Matthias Blume
3695 : blume 1040 Date: 2002/01/28 12:00:00
3696 :     Tag: Release_110_38
3697 :     Description:
3698 :    
3699 :     This time for real!!!
3700 :    
3701 :     ----------------------------------------------------------------------
3702 :     Name: Matthias Blume
3703 : blume 1039 Date: 2002/01/28 10:56:00 EST
3704 :     Tag: blume-20020128-retraction
3705 :     Description:
3706 :    
3707 :     0. Retracted earlier 110.38. (The Release_110_38 tag has been replaced
3708 :     with blume-Release_110_38-retracted.)
3709 :    
3710 :     1. Fixed a problem with incorrect rounding modes in real64.sml.
3711 :     (Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
3712 :    
3713 :     2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
3714 :     and enums fixed. The naming of corresponding ML identifiers should
3715 :     now be consistent again.
3716 :    
3717 :     ----------------------------------------------------------------------
3718 : leunga 1038 Name: Allen Leung
3719 :     Date: 2002/01/27
3720 :     Tag: leunga-20020127-nowhere
3721 :     Description:
3722 :    
3723 :     Added a target called nowhere in the configuration scripts.
3724 :     Enabling this will build the MLRISC 'nowhere' tool (for translating
3725 :     programs with where-clauses into legal SML code) during installation.
3726 :    
3727 :     ----------------------------------------------------------------------
3728 : blume 1036 Name: Matthias Blume
3729 : leunga 1038 Date: 2002/01/25 21:27:00 EST
3730 : blume 1039 Tag: blume-Release_110_38-retracted
3731 : blume 1037 Description:
3732 :    
3733 :     Call it a (working) release! Version is 110.38. Bootfiles are ready.
3734 :    
3735 :     README will be added later.
3736 :    
3737 : blume 1039 !!! NOTE: Re-tagged as blume-Release_110_38-retracted. Original tag
3738 :     (Release_110_38) removed. Reason: Last-minute bug fixes.
3739 :    
3740 : blume 1037 ----------------------------------------------------------------------
3741 :     Name: Matthias Blume
3742 : blume 1036 Date: 2002/01/25
3743 :     Tag: blume-20020125-ffi
3744 :     Description:
3745 :    
3746 :     A large number of tweaks and improvements to ml-nlffi-lib and
3747 :     ml-nlffigen:
3748 :    
3749 :     - ML represenation types have been streamlined
3750 :     - getter and setter functions work with concrete values, not abstract
3751 :     ones where possible
3752 :     - ml-nlffigen command line more flexible (see README file there)
3753 :     - some bugs have been fixed (hopefully)
3754 :    
3755 :     ----------------------------------------------------------------------
3756 : george 1034 Name: Lal George
3757 :     Date: 2002/01/24
3758 :     Tag: george-20020124-risc-ra-interface
3759 :     Description:
3760 :    
3761 :     There is a dramatic simplification in the interface to the
3762 :     register allocator for RISC architectures as a result of making
3763 :     parallel copy instructions explicit.
3764 :    
3765 :     ----------------------------------------------------------------------
3766 : blume 1028 Name: Matthias Blume
3767 : blume 1032 Date: 2002/01/22
3768 :     Tag: blume-20020122-x86-ccalls
3769 :     Description:
3770 :    
3771 :     Bug fix for c-calls on x86 (having to do with how char- and
3772 :     short-arguments are being handled).
3773 :    
3774 :     ----------------------------------------------------------------------
3775 :     Name: Matthias Blume
3776 : blume 1031 Date: 2002/01/21
3777 :     Tag: blume-20020121-ff
3778 :     Description:
3779 :    
3780 :     Another day of fiddling with the FFI...
3781 :    
3782 :     1. Bug fix/workaround: CKIT does not complain about negative array
3783 :     dimensions, so ml-nlffigen has to guard itself against this possibility.
3784 :     (Otherwise a negative dimension would send it into an infinite loop.)
3785 :    
3786 :     2. Some of the abstract types (light objects, light pointers, most "base"
3787 :     types) in structure C are now eqtypes.
3788 :    
3789 :     3. Added constructors and test functions for NULL function pointers.
3790 :    
3791 :     ----------------------------------------------------------------------
3792 :     Name: Matthias Blume
3793 : blume 1028 Date: 2002/01/18
3794 : blume 1030 Tag: blume-20020118-ready-for-new-release
3795 :     Description:
3796 :    
3797 :     Made config/srcarchiveurl point to a new place. (Will provide boot
3798 :     files shortly.)
3799 :    
3800 :     Maybe we christen this to be 110.38?
3801 :    
3802 :     ----------------------------------------------------------------------
3803 :     Name: Matthias Blume
3804 :     Date: 2002/01/18
3805 : blume 1029 Tag: blume-20020118-more-ffifiddle
3806 :     Description:
3807 :    
3808 :     Today's FFI fiddling:
3809 :    
3810 :     - Provided a structure CGetSet with "convenient" versions of C.Get.* and
3811 :     C.Set.* that use concrete (MLRep.*) arguments and results instead
3812 :     of abstract ones.
3813 :    
3814 :     - Provided word-style bit operations etc. for "int" representation
3815 :     types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
3816 :     and Long.
3817 :    
3818 :     ----------------------------------------------------------------------
3819 :     Name: Matthias Blume
3820 :     Date: 2002/01/18
3821 : blume 1028 Tag: blume-20020118-use-x86-fp
3822 :     Description:
3823 :    
3824 :     Now that x86-fast-fp seems to be working, I turned it back on again
3825 :     by default. (Seems to work fine now, even with the FFI.)
3826 :    
3827 :     Other than that, I added some documentation about the FFI to
3828 :     src/ml-nlffigen/README and updated the FFI test examples in
3829 :     src/ml-nlffi-lib/Tests/*.
3830 :    
3831 :     ----------------------------------------------------------------------
3832 : leunga 1025 Name: Allen Leung
3833 :     Date: 2002/01/17
3834 :     Tag: leunga-20020117-x86-fast-fp-call
3835 :     Description:
3836 :    
3837 :     1. Fixed a problem with handling return fp values when x86's fast fp
3838 :     mode is turned on.
3839 :    
3840 :     2. Minor pretty printing fix for cellset. Print %st(0) as %st(0) instead
3841 :     of %f32.
3842 :    
3843 :     3. Added a constructor INT32lit to the ast of MLRISC tools.
3844 :    
3845 :     ----------------------------------------------------------------------
3846 : blume 1021 Name: Matthias Blume
3847 :     Date: 2002/01/16
3848 :     Tag: blume-20020116-ffifiddle
3849 :     Description:
3850 :    
3851 :     More fiddling with the FFI interface:
3852 :    
3853 :     - Make constness 'c instead of rw wherever possible. This eliminates
3854 :     the need for certain explicit coercions. (However, due to ML's
3855 :     value polymorphism, there will still be many cases where explicit
3856 :     coercions are necessary. Phantom types are not the whole answer
3857 :     to modeling a subtyping relationship in ML.)
3858 :    
3859 :     - ro/rw coersions for pointers added. (Avoids the detour through */&.)
3860 :    
3861 :     - "printf" test example added to src/ml-nlffi-lib/Tests. (Demonstrates
3862 :     clumsy workaround for varargs problem.)
3863 :    
3864 :     ----------------------------------------------------------------------
3865 : george 1016 Name: Lal George
3866 :     Date: 2002/01/15
3867 :     Tag: <none>
3868 :     Description:
3869 :    
3870 :     1. Since COPY instructions are no longer native to the architecture,
3871 :     a generic functor can be used to implement the expandCopies function.
3872 :    
3873 :     2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
3874 :     TEXT segment.
3875 :    
3876 :     ----------------------------------------------------------------------
3877 : blume 1011 Name: Matthias Blume
3878 : blume 1015 Date: 2002/01/15
3879 :     Tag: blume-20020115-ffiupdates
3880 :     Description:
3881 :    
3882 :     1. Fix for bug resulting in single-precision float values being returned
3883 :     incorrectly from FFI calls.
3884 :    
3885 :     2. Small modifications to C FFI API:
3886 :    
3887 :     - memory-allocation routines return straight objects (no options)
3888 :     and raise an exception in out-of-memory situations
3889 :     - unsafe extensions to cast between function pointers and pointers
3890 :     from/to ints
3891 :     - added structure C_Debug as an alternative to structure C where
3892 :     pointer-dereferencing (|*| and |*!) always check for null-pointers
3893 :     - added open_lib' to DynLinkage; open_lib' works like open_lib
3894 :     but also takes a (possibly empty) list of existing library handles
3895 :     that the current library depends on
3896 :    
3897 :     ----------------------------------------------------------------------
3898 :     Name: Matthias Blume
3899 : blume 1011 Date: 2002/01/10
3900 :     Tag: blume-20020110-newffigen
3901 :     Description:
3902 :    
3903 :     1. Updates to portable graph code.
3904 :    
3905 :     2. Major update to ml-nlffigen and ml-nlffi-lib. Things are much
3906 :     more scalable now so that even huge interfaces such as the one
3907 :     for GTK compile in finite time and space. :-)
3908 :     See src/ml-nlffigen/README for details on what's new.
3909 :    
3910 :     ----------------------------------------------------------------------
3911 : george 1003 Name: Lal George
3912 : george 1009 Date: 2001/01/09 14:31:35 EST 2002
3913 :     Tag: george-20011206-rm-native-copy
3914 :     Description:
3915 :    
3916 :     Removed the native COPY and FCOPY instructions
3917 :     from all the architectures and replaced it with the
3918 :     explicit COPY instruction from the previous commit.
3919 :    
3920 :     It is now possible to simplify many of the optimizations
3921 :     modules that manipulate copies. This has not been
3922 :     done in this change.
3923 :    
3924 :     ----------------------------------------------------------------------
3925 :     Name: Lal George
3926 : george 1003 Date: 2001/12/06 16:50:13 EST 2001
3927 :     Tag: george-20011206-mlrisc-instruction
3928 :     Description:
3929 : george 824
3930 : george 1003 Changed the representation of instructions from being fully abstract
3931 :     to being partially concrete. That is to say:
3932 :    
3933 :     from
3934 :     type instruction
3935 :    
3936 :     to
3937 :     type instr (* machine instruction *)
3938 :    
3939 :     datatype instruction =
3940 :     LIVE of {regs: C.cellset, spilled: C.cellset}
3941 :     | KILL of {regs: C.cellset, spilled: C.cellset}
3942 :     | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
3943 :     | ANNOTATION of {i: instruction, a: Annotations.annotation}
3944 :     | INSTR of instr
3945 :    
3946 :     This makes the handling of certain special instructions that appear on
3947 :     all architectures easier and uniform.
3948 :    
3949 :     LIVE and KILL say that a list of registers are live or killed at the
3950 :     program point where they appear. No spill code is generated when an
3951 :     element of the 'regs' field is spilled, but the register is moved to
3952 :     the 'spilled' (which is present, more for debugging than anything else).
3953 :    
3954 :     LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
3955 :     We used to generate:
3956 :    
3957 :     DEFFREG f1
3958 :     f1 := f2 + f3
3959 :     trapb
3960 :    
3961 :     but now generate:
3962 :    
3963 :     f1 := f2 + f3
3964 :     trapb
3965 :     LIVE {regs=[f1,f2,f3], spilled=[]}
3966 :    
3967 :     Furthermore, the DEFFREG (hack) required that all floating point instruction
3968 :     use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
3969 :     defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
3970 :     in a cleaner alpha implementation. (Hopefully, intel will not get rid of
3971 :     this architecture).
3972 :    
3973 :     COPYXXX is intended to replace the parallel COPY and FCOPY available on
3974 :     all the architectures. This will result in further simplification of the
3975 :     register allocator that must be aware of them for coalescing purposes, and
3976 :     will also simplify certain aspects of the machine description that provides
3977 :     callbacks related to parallel copies.
3978 :    
3979 :     ANNOTATION should be obvious, and now INSTR represents the honest to God
3980 :     machine instruction set!
3981 :    
3982 :     The <arch>/instructions/<arch>Instr.sml files define certain utility
3983 :     functions for making porting easier -- essentially converting upper case
3984 :     to lower case. All machine instructions (of type instr) are in upper case,
3985 :     and the lower case form generates an MLRISC instruction. For example on
3986 :     the alpha we have:
3987 :    
3988 :     datatype instr =
3989 :     LDA of {r:cell, b:cell, d:operand}
3990 :     | ...
3991 :    
3992 :     val lda : {r:cell, b:cell, d:operand} -> instruction
3993 :     ...
3994 :    
3995 :     where lda is just (INSTR o LDA), etc.
3996 :    
3997 : leunga 815 ----------------------------------------------------------------------
3998 : blume 986 Name: Matthias Blume
3999 : blume 993 Date: 2001/11/22 21:40:00 EST
4000 :     Tag: Release_110_37
4001 :     Description:
4002 :    
4003 :     Release 110.37. This time for real.
4004 :    
4005 :     ----------------------------------------------------------------------
4006 :     Name: Matthias Blume
4007 : blume 988 Date: 2001/11/21 16:35:00 EST
4008 :     Tag: blume-20011121-foot-in-mouth
4009 :     Description:
4010 :    
4011 :     Removed the "Release_110_37" tag because of a serious bug.
4012 :     This will be re-tagged once the bug is fixed.
4013 :    
4014 :     ----------------------------------------------------------------------
4015 :     Name: Matthias Blume
4016 : blume 987 Date: 2001/11/21 16:14:00 EST
4017 :     Tag: blume-20011121-forgottenfile
4018 :     Description:
4019 :    
4020 :     Forgot to add a file. (Just a .tex-file -- part of
4021 :     the CM manual source.)
4022 :    
4023 :     ----------------------------------------------------------------------
4024 :     Name: Matthias Blume
4025 : blume 986 Date: 2001/11/21 16:10:00 EST
4026 : blume 988 Tag: blume-20011121-invalid_110_37
4027 : blume 986 Description:
4028 :    
4029 : blume 988 Note: I removed the original tag "Release_110_37" from this commit
4030 :     because we found a serious bug in all non-x86 backends.
4031 :     - Matthias
4032 :    
4033 : blume 986 1. Modifications to the SML/NJ code generator and to the runtime system
4034 :     so that code object name strings are directly inserted into code
4035 :     objects at code generation time. The only business the runtime system
4036 :     has with this is now to read the name strings on occasions.
4037 :     (The encoding of the name string has also changed somewhat.)
4038 :    
4039 :     2. CM now implements a simple "set calculus" for specifying export lists.
4040 :     In particular, it is now possible to refer to the export lists of
4041 :     other libraries/groups/sources and form unions as well as differences.
4042 :     See the latest CM manual for details.
4043 :    
4044 :     3. An separate notion of "proxy" libraries has again be eliminated from
4045 :     CM's model. (Proxy libraries are now simply a special case of using
4046 :     the export list calculus.)
4047 :    
4048 :     4. Some of the existing libraries now take advantage of the new set
4049 :     calculus.
4050 :     (Notice that not all libraries have been converted because some
4051 :     of the existing .cm-files are supposed to be backward compatible
4052 :     with 110.0.x.)
4053 :    
4054 :     5. Some cleanup in stand-alone programs. (Don't use "exnMessage" -- use
4055 :     "General.exnMessage"! The former relies on a certain hook to be
4056 :     initialized, and that often does not happen in the stand-alone case.)
4057 :    
4058 :     ----------------------------------------------------------------------
4059 : george 984 Name: Lal George
4060 :     Date: 2001/11/21 13:56:18 EST
4061 :     Tag: george-2001121-pseudo-ops
4062 :     Description:
4063 :    
4064 :     Implemented a complete redesign of MLRISC pseudo-ops. Now there
4065 :     ought to never be any question of incompatabilities with
4066 :     pseudo-op syntax expected by host assemblers.
4067 :    
4068 :     For now, only modules supporting GAS syntax are implemented
4069 :     but more should follow, such as MASM, and vendor assembler
4070 :     syntax, e.g. IBM as, Sun as, etc.
4071 :    
4072 :     ----------------------------------------------------------------------
4073 : blume 977 Name: Matthias Blume
4074 :     Date: 2001/11/14 11:52:00 EST
4075 :     Tag: blume-20011114-srcname
4076 :     Description:
4077 :    
4078 :     1. Routed the name of the current source file to mlriscgen where it
4079 :     should be directly emitted into the code object. (This last part
4080 :     is yet to be done.)
4081 :    
4082 :     2. Some cleanup of the pgraph code to make it match the proposal that
4083 :     I put out the other day. (The proposal notwithstanding, things are
4084 :     still in flux here.)
4085 :    
4086 :     ----------------------------------------------------------------------
4087 : george 976 Name: Lal George
4088 :     Date: 2001/11/14 09:44:04 EST
4089 :     Tag:
4090 :     Description:
4091 :    
4092 :     Fix for a backpatching bug reported by Allen.
4093 :    
4094 :     Because the boundary between short and long span-dependent
4095 :     instructions is +/- 128, there are an astounding number of
4096 :     span-dependent instructions whose size is over estimated.
4097 :    
4098 :     Allen came up with the idea of letting the size of span
4099 :     dependent instructions be non-monotonic, for a maxIter
4100 :     number of times, after which the size must be monotonically
4101 :     increasing.
4102 :    
4103 :     This table shows the number of span-dependent instructions
4104 :     whose size was over-estimated as a function of maxIter, for the
4105 :     file Parse/parse/ml.grm.sml:
4106 :    
4107 :     maxIter # of instructions:
4108 :     10 687
4109 :     20 438
4110 :     30 198
4111 :     40 0
4112 :    
4113 :     In compiling the compiler, there is no significant difference in
4114 :     compilation speed between maxIter=10 and maxIter=40. Actually,
4115 :     my measurements showed that maxIter=40 was a tad faster than
4116 :     maxIter=10! Also 96% of the files in the compiler reach a fix
4117 :     point within 13 iterations, so fixing maxIter at 40, while high,
4118 :     is okay.
4119 :    
4120 :     ----------------------------------------------------------------------
4121 : blume 975 Name: Matthias Blume
4122 :     Date: 2001/10/31 15:25:00 EST
4123 :     Tag: blume-20011031-pgraph
4124 :     Description:
4125 :    
4126 :     CKIT:
4127 :     * Changed the "Function" constructor of type Ast.ctype to carry optional
4128 :     argument identifiers.
4129 :     * Changed the return type of TypeUtil.getFunction accordingly.
4130 :     * Type equality ignores the argument names.
4131 :     * TypeUtil.composite tries to preserve argument names but gives up quickly
4132 :     if there is a mismatch.
4133 :    
4134 :     installation script:
4135 :     * attempts to use "curl" if available (unless "wget" is available as well)
4136 :    
4137 :     CM:
4138 :     * has an experimental implementation of "portable graphs" which I will
4139 :     soon propose as an implementation-independent library format
4140 :     * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
4141 :    
4142 :     NLFFI-LIB:
4143 :     * some cleanup (all cosmetic)
4144 :    
4145 :     NLFFIGEN:
4146 :     * temporarily disabled the mechanism that suppresses ML output for
4147 :     C definitions whose identifiers start with an underscore character
4148 :     * generate val bindings for enum constants
4149 :     * user can request that only one style (light or heavy) is being used;
4150 :     default is to use both (command-line arguments: -heavy and -light)
4151 :     * fixed bug in handling of function types involving incomplete pointers
4152 :     * generate ML entry points that take record arguments (i.e., using
4153 :     named arguments) for C functions that have a prototype with named
4154 :     arguments
4155 :     (see changes to CKIT)
4156 :    
4157 :     ----------------------------------------------------------------------
4158 : leunga 972 Name: Allen Leung
4159 :     Date: 2001/10/27 20:34:00 EDT
4160 :     Tag: leunga-20011027-x86-fast-fp-call
4161 :     Description:
4162 :    
4163 :     Fixed the bug described in blume-20010920-slowfp.
4164 :    
4165 :     The fix involves
4166 :     1. generating FCOPYs in FSTP in ia32-svid
4167 :     2. marking a CALL with the appropriate annotation
4168 :    
4169 :     ----------------------------------------------------------------------
4170 : blume 961 Name: Matthias Blume
4171 :     Date: 2001/10/16 11:32:00 EDT
4172 :     Tag: blume-20011016-netbsd
4173 :     Description:
4174 :    
4175 :     Underscore patch from Chris Richards (fixing problem with compiling
4176 :     runtime system under recent NetBSD).
4177 :    
4178 :     ----------------------------------------------------------------------
4179 : george 959 Name: Allen Leung
4180 :     Date: 2001/10/12 17:18:32 EDT 2001
4181 :     Tag: leung-20011012-x86-printflowgraph
4182 :     Description:
4183 :    
4184 :     X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
4185 :    
4186 :     ----------------------------------------------------------------------
4187 : george 952 Name: Lal George
4188 : george 958 Date: 2001/10/11 23:51:34 EDT
4189 :     Tag: george-20011011-too-many-instrs
4190 :     Description:
4191 :    
4192 :     The representation of a program point never expected to see more
4193 :     than 65536 instructions in a basic block!
4194 :    
4195 :     ----------------------------------------------------------------------
4196 :     Name: Lal George
4197 : george 952 Date: 2001/10/09 09:41:37 EDT
4198 :     Tag: george-20011008-mlrisc-labels
4199 :     Description:
4200 :    
4201 :     Changed the machine description files to support printing of
4202 :     local and global labels in assembly code, based on host assembler
4203 :     conventions.
4204 :    
4205 :     ----------------------------------------------------------------------
4206 : blume 916 Name: Matthias Blume
4207 : blume 939 Date: 2001/09/25 15:25:00 EDT
4208 :     Tag: blume-20010925-exninfo
4209 :     Description:
4210 :    
4211 :     I provided a non-hook implementation of exnName (at the toplevel) and
4212 :     made the "dummy" implementation of exnMessage (at the toplevel) more
4213 :     useful: if nothing gets "hooked in", then at least you are going to
4214 :     see the exception name and a message indicating why you don't see more.
4215 :    
4216 :     [For the time being, programs that need exnMessage and want to use
4217 :     ml-build should either use General.exnMessage (strongly recommended) or
4218 :     refer to structure General at some other point so that CM sees a
4219 :     static dependency.]
4220 :    
4221 :     [Similar remarks go for "print" and "use": If you want to use their
4222 :     functionality in stand-alone programs generated by ml-build, then use
4223 :     TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
4224 :    
4225 :     ----------------------------------------------------------------------
4226 :     Name: Matthias Blume
4227 : blume 938 Date: 2001/09/20 17:28:00 EDT
4228 :     Tag: blume-20010920-slowfp
4229 :     Description:
4230 :    
4231 :     Allen says that x86-fast-fp is not safe yet, so I turned it off again...
4232 :    
4233 :     ----------------------------------------------------------------------
4234 :     Name: Matthias Blume
4235 : blume 937 Date: 2001/09/20 17:20:00 EDT
4236 :     Tag: blume-20010920-canonicalpaths
4237 :     Description:
4238 :    
4239 :     0. Updated the BOOT file (something that I forgot to do earlier).
4240 :    
4241 :     1. Small internal change to CM so that it avoids "/../" in filenames
4242 :     as much as possible (but only where it is safe).
4243 :    
4244 :     2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
4245 :     that arguments that contain delimiters are passed through correctly.
4246 :     This change also means that all "special" arguments of the form
4247 :     @SMLxxx... must come first.
4248 :    
4249 :     3. Changed install script to put relative anchor names for tool commands
4250 :     into pathconfig.
4251 :    
4252 :     ----------------------------------------------------------------------
4253 :     Name: Matthias Blume
4254 : blume 932 Date: 2001/09/18 15:35:00 EDT
4255 :     Tag: blume-20010918-readme11036
4256 :     Description:
4257 :    
4258 :     Added README files.
4259 :    
4260 :     ----------------------------------------------------------------------
4261 :     Name: Matthias Blume
4262 : blume 929 Date: 2001/09/18 11:45:00 EDT
4263 :     Tag: Release_110_36 (retag)
4264 :     Description:
4265 :    
4266 :     Fixed mistake in config/preloads. Retagged as 110.36.
4267 :    
4268 :     ----------------------------------------------------------------------
4269 :     Name: Matthias Blume
4270 : blume 928 Date: 2001/09/18 09:40:00 EDT
4271 : blume 929 Tag: Release_110_36_orig (tag changed)
4272 : blume 928 Description:
4273 :    
4274 :     New version (110.36). New bootfiles.
4275 :    
4276 :     ----------------------------------------------------------------------
4277 :     Name: Matthias Blume
4278 : blume 927 Date: 2001/09/14 16:15:00 EDT
4279 :     Tag: blume-20010914-x86fastfp
4280 :     Description:
4281 :    
4282 :     John committed some changes that Allen made, in particular a (hopefully)
4283 :     correctly working version of the x86-fp module.
4284 :    
4285 :     I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
4286 :     flag to "true". Everything seems to compile to a fixpoint ok, and
4287 :     "mandelbrot" speeds up by about 15%.
4288 :    
4289 :     ----------------------------------------------------------------------
4290 :     Name: Matthias Blume
4291 : blume 923 Date: 2001/09/13 11:20:00 EDT
4292 :     Tag: blume-20010913-minimal
4293 :     Description:
4294 :    
4295 :     1. Stefan Monnier's patch to fix a miscompilation problem that
4296 :     was brought to light by John Reppy's work on Moby.
4297 :    
4298 :     2. Implemented a minimal "structure Compiler" that contains just
4299 :     "version" and "architecture". The minimal version will b