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

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Revision 1784 - (view) (download)

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