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

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Revision 1498 - (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 1480 Name:
11 :     Date: yyyy/mm/dd
12 :     Tag: <post-commit CVS tag>
13 :     Description:
14 :    
15 :     ----------------------------------------------------------------------
16 : mblume 1479 Name: Matthias Blume (blume (at) tti - c (dot) org)
17 : mblume 1498 Date: 2004/05/25 16:00:00 CDT
18 :     Tag: blume-20040525-group-owner
19 :     Description:
20 :    
21 :     CM now ignores (but still accepts) the "owner" information in group
22 :     descriptions. The owner of a group is its next enclosing
23 :     library. Each group must have a unique owner. (There is a virtual
24 :     "toplevel" library that own groups which are not nested within a real
25 :     library.) Previously, each group had to explicitly declare its owner,
26 :     and CM would check that such a declaration is correct. The new scheme
27 :     is to have CM check that for each group there is precisely one owning
28 :     library.
29 :    
30 :     The advantage of the new scheme is that the programmer no longer needs
31 :     to maintain the somewhat annoying owner information. The downside is
32 :     that CM cannot enforce the ownership rule across multiple runs of
33 :     CM.make. Fortunately, enclosing the same group in two different
34 :     libraries A and B which are not part of the same program does not
35 :     cause real problems.
36 :    
37 :     ----------------------------------------------------------------------
38 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
39 : mblume 1496 Date: 2004/05/20 16:00:00 CDT
40 :     Tag: blume-20040520-win32
41 :     Description:
42 :    
43 :     Made the win32 version work again. (Strangely, a misplaced comma had
44 :     slipped into win32-process.c which prevented the runtime from being
45 :     compiled correctly.)
46 :    
47 :     Also, included a minor addition to ml-build.bat analogous to what was
48 :     done in blume-20040519-ml-build.
49 :    
50 :     ----------------------------------------------------------------------
51 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
52 : mblume 1494 Date: 2004/05/19 22:10:00 CDT
53 :     Tag: blume-20040519-ml-build
54 :     Description:
55 :    
56 :     Arranged for ml-build to clean up after itself a little bit better.
57 :     The script generates a temporary SML source file and compiles it using
58 :     CM, so CM generates metadata (GUID, SKEL, objectfile) for it. It now
59 :     gets rid of those at the end, so they don't accumulate under .cm.
60 :    
61 :     This required a minor change to install.sh because the name of the
62 :     metadata directory (default: .cm) is actually configurable at
63 :     installation time.
64 :    
65 :     ----------------------------------------------------------------------
66 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
67 : mblume 1491 Date: 2004/05/18 15:50:00 CDT
68 :     Tag: blume-20040518-mkreader
69 :     Description:
70 :    
71 :     Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
72 :     implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
73 :    
74 :     ----------------------------------------------------------------------
75 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
76 : mblume 1489 Date: 2004/05/11 14:35:00 CDT
77 :     Tag: blume-20040511-win32sock
78 :     Description:
79 :    
80 :     Added previously missing support for many socket-related functions
81 :     under win32. Thanks to David Hansel <hansel@reactive-systems.com>
82 :     for the voluminous patch!
83 :    
84 :     (I have not tested this patch under win32 yet.)
85 :    
86 : mblume 1490 Here is David's e-mail:
87 :    
88 :     Hi,
89 :    
90 :     Attached to this email you find a diff against sml/nj 110.45
91 :     that will enable socket support under Windows.
92 :    
93 :     To apply the patch (using unix or cygwin)
94 :     1) gunzip runtime.diff.gz
95 :     2) "cd" into "src/runtime" in the source tree of a fresh
96 :     110.45 installation.
97 :     3) patch -p 1 < [your/path/to]runtime.diff
98 :    
99 :     The code compiles fine but has NOT yet been extensively tested.
100 :     I only ran a few tests for basic socket client functionality
101 :     (which worked fine). Especially the functions that use ioctl
102 :     are not tested at all and might not work (see below).
103 :    
104 :     I implemented this since we want to move to a newer version of sml/nj
105 :     but need socket support in order to use it. This is the first time I
106 :     even had a look at the sml/nj source, so please review my changes
107 :     before making this part of the distribution! Here are a few issues
108 :     that I think might be better for someone to solve who is more
109 :     familiar with the sml/nj source (and socket programming):
110 :    
111 :     - getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
112 :     exception since I could not figure out what the windows equivalent
113 :     of these functions is
114 :    
115 :     - In sockets-osdep.h there are a some #include statements that are
116 :     only used in a few files that include sockets-osdep.h
117 :    
118 :     - In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
119 :     does not process its return value since I don't know how to
120 :     report an error upwards.
121 :    
122 :     - It would probably be good to have a call to WSACleanup() when
123 :     the library is unloaded (if there is such a possibility).
124 :     Otherwise I think Windows will take care of this automatically
125 :     when the process finishes.
126 :    
127 :     - I used ioctlsocket() as a replacement for ioctl() but I have
128 :     no idea if that is actually the proper replacement on Windows.
129 :    
130 :     - All these issues are marked in the code by "FIXME" comments.
131 :    
132 :     We use sml/nj extensively in our products and are quite happy
133 :     with it. I hope this contribution will help you.
134 :    
135 :     Keep up the good work!
136 :    
137 :     David
138 :    
139 : mblume 1489 ----------------------------------------------------------------------
140 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
141 : mblume 1488 Date: 2004/05/11 14:20:00 CDT
142 :     Tag: blume-20040511-installml
143 :     Description:
144 :    
145 :     Fixed two bugs in installml script. (Thanks to Vesa A. Norrman for
146 :     the patch.)
147 :    
148 :     ----------------------------------------------------------------------
149 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
150 : mblume 1487 Date: 2004/05/11 14:05:00 CDT
151 :     Tag: blume-20040511-nlffi-netbsd
152 :     Description:
153 :    
154 :     Added support for nlffi under netbsd. (Thanks to Vesa A. Norrman for
155 :     the patch.)
156 :    
157 :     ----------------------------------------------------------------------
158 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
159 : mblume 1486 Date: 2004/05/11 12:05:00 CDT
160 :     Tag: blume-20040511-exports
161 :     Description:
162 :    
163 :     As per request by Adam Chlipala <adam@hcoop.net>, extended various
164 :     export lists in compiler-related .cm-files.
165 :    
166 :     ----------------------------------------------------------------------
167 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
168 : mblume 1485 Date: 2004/05/11 11:35:00 CDT
169 :     Tag: blume-20040511-allsource
170 :     Description:
171 :    
172 :     The installer now honors the "src-smlnj" target again, although its meaning
173 :     has changed from "all sources required for the compiler" to "all sources
174 :     the installer knows about". In other words, if you enable "src-smlnj"
175 :     in the "targets" file, then the installer will pull in sources for
176 :     everything. (Notice that this refers to source code only. Compiled
177 :     code is still only installed for modules that were requested explicitly
178 :     or which are required for other modules that were requested explicitly.)
179 :    
180 :     ----------------------------------------------------------------------
181 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
182 : mblume 1482 Date: 2004/04/23 17:40:00 CDT
183 :     Tag: blume-20040423-ieee-scan
184 :     Description:
185 :    
186 :     Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
187 :     in the exponent calculation we get INF or ZERO (depending on the mantissa
188 :     and the sign of the exponent).
189 :    
190 :     ----------------------------------------------------------------------
191 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
192 : mblume 1480 Date: 2004/04/23 10:40:00 CDT
193 :     Tag: blume-20040423-ml-build
194 :     Description:
195 :    
196 :     The ml-build script now terminates with a non-0 status when something
197 :     goes wrong.
198 :    
199 :     ----------------------------------------------------------------------
200 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
201 : mblume 1479 Date: 2004/04/22 16:35:00 CDT
202 :     Tag: blume-20040422-Option
203 :     Description:
204 :    
205 :     Made exception Option to be the same as exception Option.Option
206 :     (as it should be).
207 :    
208 :     ----------------------------------------------------------------------
209 : allenleung 1468 Name: Allen Leung (leunga (at) reservoir (dot) com)
210 :     Date: 2004/03/19 14:40:00 EST
211 :     Tag: leunga-20040319-cygwin-nlffi
212 :     Description:
213 :    
214 :     Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
215 :     of SML/NJ. The problem is that
216 :    
217 :     lib = dlopen(NULL, ...)
218 :     f = dlsym(lib, "malloc");
219 :    
220 :     does not work on Windows unless we explicitly export symbols
221 :     such as 'malloc' during linking. We fixed this by explicitly
222 :     exporting the required symbols with the magic gcc incantation:
223 :    
224 :     -Wl,--export-all cygwin.def
225 :    
226 :     where cygwin.def is a file containing all the symbols that
227 :     we wish to export.
228 :    
229 :     I suspect this is a Windows problem and we'll have to
230 :     do the same (somehow with windows compilers) when
231 :     we build the native win32 version with the system
232 :     calls LoadLibrary/GetProcAddress.
233 :    
234 :     ----------------------------------------------------------------------
235 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
236 : mblume 1465 Date: 2004/03/04 16:35:00 CST
237 :     Tag: blume-20040304-intinf-fmt
238 :     Description:
239 :    
240 :     Fixed problem with IntInf.fmt (sign would show up on the right instead
241 :     of on the left for BIN, OCT, and HEX).
242 :    
243 :     ----------------------------------------------------------------------
244 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
245 : mblume 1464 Date: 2004/03/04 11:25:00 CST
246 :     Tag: blume-20040304-symlinks
247 :     Description:
248 :    
249 :     Fixed problem with installer script (unix only) where bin/ml-yacc and
250 :     friends pointed (via symlinks) to absolute locations instead of just
251 :     .run-sml. This was reported by Vesa A Norrman.
252 :    
253 :     ----------------------------------------------------------------------
254 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
255 : mblume 1455 Date: 2004/02/13 14:50:00 CST
256 :     Tag: Release_110_45
257 :     Description:
258 :    
259 :     New working version (110.45). New bootfiles.
260 :    
261 :     ----------------------------------------------------------------------
262 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
263 : mblume 1448 Date: 2004/01/26 15:15:15 CST
264 :     Tag: blume-20040126-toplevel
265 :     Description:
266 :    
267 :     Improved handling of exceptions at the interactive toplevel.
268 :    
269 :     ----------------------------------------------------------------------
270 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
271 :     Date: 2004/01/26 11:25:00
272 : mblume 1446 Tag: blume-20040126-app
273 :     Description:
274 :    
275 :     Type of top-level "app" corrected.
276 : mblume 1447 Added code for setting vp_limitPtrMask to Win32-specific runtime.
277 : mblume 1446
278 :     ----------------------------------------------------------------------
279 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
280 : mblume 1427 Date: 2003/11/18 17:10 CST
281 :     Tag: blume-20031118-basis-fiddle
282 :     Description:
283 :    
284 :     - changed Timer interface to what might become the spec
285 :     - POSIX_FLAGS -> BIT_FLAGS according to spec
286 :     - some other minor discrepancies wrt. spec eliminated
287 :    
288 :     ----------------------------------------------------------------------
289 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
290 : mblume 1414 Date: 2003/11/06 12:00:00 CST
291 :     Tag: Release_110_44
292 :     Description:
293 :    
294 :     New working version (110.44). New bootfiles.
295 :    
296 :     ----------------------------------------------------------------------
297 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
298 : mblume 1411 Date: 2003/11/04 11:50:00 CST
299 :     Tag: blume-20031104-move-libraries
300 :     Description:
301 :    
302 :     Eliminated the "dont_move_libraries" directive in config/targets.
303 :     (The mechanism was broken and could not be fixed easily. Moreover,
304 :     there does not seem to be any reason not to move all libraries into
305 :     lib during installation. I originally implemented this directive as a
306 :     backward-compatibility feature when I first introduced the new CM.
307 :     Now that things have been stable for a long time and going back to the
308 :     old CM is not an option, there is no reason to keep it around.)
309 :    
310 :     ----------------------------------------------------------------------
311 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
312 : mblume 1409 Date: 2003/11/03 16:00:00 CST
313 :     Tag: blume-20031103-installdir
314 :     Description:
315 :    
316 :     Made installer honor INSTALLDIR variable again. (Thanks to Chris
317 :     Richards for pointing out the problem and providing the solution.)
318 :    
319 :     ----------------------------------------------------------------------
320 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
321 : mblume 1400 Date: 2003/10/01 17:05:00 CDT
322 :     Tag: blume-20031001-lal-mlrisc
323 :     Description:
324 :    
325 :     MLRISC bug fix from Lal.
326 :    
327 :     ----------------------------------------------------------------------
328 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
329 : mblume 1399 Date: 2003/09/30 16:10:00 CDT
330 :     Tag: blume-20030930-primio-bat
331 : mblume 1398 Description:
332 :    
333 :     1. Added openVector, nullRd, and nullWr to PRIM_IO.
334 :     2. Improved .bat files (for Win32 port) to make things work under Win95.
335 :     (thanks to Aaron S. Hawley for this one)
336 :    
337 :     ----------------------------------------------------------------------
338 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
339 : mblume 1395 Date: 2003/09/26 16:05:00 CDT
340 :     Tag: blume-20030926-wrappriv
341 :     Description:
342 :    
343 :     Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
344 :    
345 :     ----------------------------------------------------------------------
346 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
347 : mblume 1394 Date: 2003/09/26 15:00:00 CDT
348 :     Tag: blume-20030926-110_43_3
349 :     Description:
350 :    
351 :     - additional cleanup
352 :     - version number bump, NEW BOOTFILES
353 :    
354 :     ----------------------------------------------------------------------
355 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
356 : mblume 1393 Date: 2003/09/26 12:00:00 CDT
357 :     Tag: blume-20030926-ppautoload
358 :     Description:
359 :    
360 :     I modified the read-eval-print loop so that the autoloader gets
361 :     invoked whenever the prettyprinter tries to look up a symbol that
362 :     is not currently defined in the toplevel environment but which
363 :     appears in CM's autoload registry. As a result, we see far fewer of
364 :     those ?.Foo.Bar.xxx names in the prettyprinter's output.
365 :    
366 :     In addition to this I tried to clean up some pieces of the Basis
367 :     implementation (e.g., Socket, Word8Array) in order to prevent other
368 :     instances of these ?.Foo.Bar.xxx names from being printed.
369 :    
370 :     The mechanism that picks names for types still needs some work, though.
371 :     (Right now it seems that if there is a type A.t which is defined to
372 : mblume 1394 be B.u, but B is unavailable at toplevel, then A.t gets printed as
373 :     "?.B.u" although the perhaps more sensible solution would be to use
374 : mblume 1393 "A.t" in this case. In other words, the prettyprinter should follow
375 :     a chain of DEFtycs not farther than there are corresponding toplevel
376 :     names in the current environment.)
377 :    
378 :     ----------------------------------------------------------------------
379 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
380 : mblume 1391 Date: 2003/09/24 16:31:00 CDT
381 :     Tag: blume-20030924-installer
382 :     Description:
383 :    
384 :     Another installer tweak: All the ML code for the installer is now
385 :     compiled during CMB.make and put into a little library called
386 :     $smlnj/installer.cm. The installation then simply invokes
387 :    
388 :     sml -m $smlnj/installer.cm
389 :    
390 :     and everything happens automagically.
391 :    
392 :     Win32: ML code senses value of environment variable SMLNJ_HOME.
393 :     Unix: ML code senses values of environment variables ROOT, CONFIGDIR,
394 :     and BINDIR.
395 :    
396 :     The new scheme guarantees that the ML code responsible for the installation
397 :     is in sync with the APIs of the main system. Also, the installer is
398 :     somewhat faster because the installer script is precompiled.
399 :    
400 :     ----------------------------------------------------------------------
401 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
402 : mblume 1390 Date: 2003/09/24 15:35:00 CDT
403 :     Tag: blume-20030924-synsock
404 :     Description:
405 :    
406 :     Added a signature SYNCHRONOUS_SOCKET to basis.cm. This is like SOCKET
407 :     but excludes all non-blocking operations. Defined SOCKET (in Basis)
408 :     and CML_SOCKET in terms of SYNCHRONOUS_SOCKET. Removed superfluous
409 :     implementations of non-blocking operations from CML's Socket
410 :     structure.
411 :    
412 :     ----------------------------------------------------------------------
413 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
414 : mblume 1389 Date: 2003/09/24 15:10:05 CDT
415 :     Tag: blume-20030924-sockets
416 :     Description:
417 :    
418 :     1. Fixed SOCKET API and implementation to match Basis spec.
419 :     This required changing the internal representation of sockets to one
420 :     that remembers (for each socket file descriptor) whether it is currently
421 :     blocking or non-blocking. This state is maintained lazily (i.e., a system
422 :     call is made only if the state actually needs to change).
423 :    
424 :     2. OS-specific details of sockets were moved into separate files, thus
425 :     making it possible to unify the bulk of the socket implementations
426 :     between Unix and Win32.
427 :    
428 :     3. CML's socket API changed accordingly.
429 :     (Note that we need to remove non-blocking functions from this API
430 :     since they are redundant in the case of CML!)
431 :    
432 :     4. CML's socket implementation now makes use of non-blocking functions
433 :     provided by Basis, thus removing all OS-dependent code from this part
434 :     of CML.
435 :    
436 :     5. Changed Real64.precision from 52 to 53. Minor cleanup in Real64 code.
437 :    
438 :     ----------------------------------------------------------------------
439 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
440 : mblume 1387 Date: 2003/09/22 12:10:00 CDT
441 : mblume 1388 Tag: blume-20030922-110_43_2
442 : mblume 1387 Description:
443 :    
444 :     Made a new interim version and bootfiles for developer's bootstrapping
445 :     convenience.
446 :    
447 :     110.43.2 -- NEW BOOTFILES
448 :    
449 :     ----------------------------------------------------------------------
450 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
451 : mblume 1385 Date: 2003/09/19 15:55:00 CDT
452 :     Tag: blume-20030919-cmdir
453 :     Description:
454 :    
455 :     1. new-install.sh -> install.sh
456 :     2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
457 :     3. tweaked installer so that another name instead of .cm can be chosen
458 :     at install time (by setting the CM_DIR_ARC environment variable
459 :     during installation); once installation is complete, the name is
460 :     fixed
461 :    
462 :     ----------------------------------------------------------------------
463 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
464 : mblume 1384 Date: 2003/09/18 16:00:00 CDT
465 :     Tag: blume-20030918-110_43_1
466 :     Description:
467 :    
468 :     Made a new interim version and bootfiles for developer's bootstrapping
469 :     convenience.
470 :    
471 :     110.43.1 -- NEW BOOTFILES
472 :    
473 :     ----------------------------------------------------------------------
474 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
475 : mblume 1383 Date: 2003/09/18 15:20:00 CDT
476 :     Tag: blume-20030918-misc
477 :     Description:
478 :    
479 :     1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
480 :     this seems to be controversial at the moment) and used those in
481 :     Posix.ProcEnv.times.
482 :    
483 :     2. Added Time.{from,to}Nanoseconds to Time.
484 :    
485 :     3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
486 :     For example, fromLargeInt never needs to look at more than 3 "big
487 :     digits" to get its 53 bits of precision.
488 :    
489 :     ----------------------------------------------------------------------
490 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
491 : mblume 1381 Date: 2003/09/17 16:30:00 CDT
492 :     Tag: blume-20030917-real32-slices
493 :     Description:
494 :    
495 :     Added an entry to the primitive environment
496 :     (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
497 :     added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
498 :    
499 :     Removed some of the "magic" constants in real64.sml and replaced them
500 :     with code that generates these values from their corresponding
501 :     integer counterparts.
502 :    
503 :     Made all(?) the slice-related changes to the Basis and made everything
504 :     compile again...
505 :    
506 :     ----------------------------------------------------------------------
507 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
508 : mblume 1375 Date: 2003/09/15 17:45:00 CDT
509 :     Tag: blume-20030915-rbase
510 :     Description:
511 :    
512 :     Fixed bug in Real.fromLargeInt.
513 :    
514 :     ----------------------------------------------------------------------
515 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
516 : mblume 1369 Date: 2003/09/13 18:11:00 CDT
517 :     Tag: blume-20030913-libinstall
518 :     Description:
519 :    
520 :     Minor bugfix in config/libinstall (set anchor with path to
521 :     standalone tool after installing it, otherwise libraries that
522 :     need ml-lex or ml-yacc won't compile the first time the installer
523 :     runs).
524 :    
525 :     ----------------------------------------------------------------------
526 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
527 : mblume 1368 Date: 2003/09/12 11:45:00 CDT
528 :     Tag: blume-20030912-various
529 :     Description:
530 :    
531 :     - fixed bug in Real.toLargeInt
532 :     - fixed bug in Posix.ProcEnv.times
533 :     - changed inputLine functions to return an option
534 :     - minor installer improvements / bugfixes
535 :     - changed default @SMLalloc parameter for x86/celeron to 64k
536 :    
537 :     ----------------------------------------------------------------------
538 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
539 : mblume 1356 Date: 2003/09/09 22:00:00 CDT
540 :     Tag: Release_110_43
541 :     Description:
542 :    
543 :     New working release 110.43. New bootfiles.
544 :    
545 :     ----------------------------------------------------------------------
546 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
547 : mblume 1354 Date: 2003/09/09 19:20:00 CDT
548 :     Tag: blume-20030909-installer
549 :     Description:
550 :    
551 :     Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
552 :     Modified config/install.bat to take advantage of it. Also modified
553 :     config/install.sh (and called it config/new-install.sh) to take advantage
554 :     of it on Unix systems. (The SML code is (supposed to be) platform-
555 :     independent.)
556 :    
557 :     The installer can now install everything under Win32
558 :     as well as under *nix as long as it compiles.
559 :    
560 :     Other changes:
561 :    
562 :     - made CML compile again under Win32
563 :     - made eXene compile under Win32 (by providing a fake structure UnixSock
564 :     and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
565 :     - fixed a bug in nowhere: it assumed that type OS.Process.status is the
566 :     same as type int; under Win32 it isn't
567 :     - fixed some slice-related problems in the win32-specific parts of CML
568 :     - added a functor argument "sameVol" to os-path-fn.sml in the Basis
569 :     (under Win32, the volume name is case-insensitive, and the
570 :     OS.Path code compares volume names for equality)
571 :    
572 :     ----------------------------------------------------------------------
573 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
574 : mblume 1353 Date: 2003/09/08 11:55:00 CDT
575 :     Tag: blume-20030908-fullpath
576 :     Description:
577 :    
578 :     Made Win32 version of OS.FileSys.fullPath return current directory
579 :     when given an empty string. This is what the spec says, and incidentally,
580 :     CM depends on it. (CM otherwise goes into an infinite loop in certain
581 :     cases when presented with the name of a non-existing .cm file.)
582 :    
583 :     ----------------------------------------------------------------------
584 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
585 : mblume 1350 Date: 2003/09/04 16:30:00 CDT
586 : mblume 1352 Tag: blume-20030905-slices-etc
587 : mblume 1350 Description:
588 :    
589 :     1. Changed interface to vectors and arrays in Basis to match
590 :     (draft) Basis spec.
591 :     2. Added signatures and implementations of slices according to
592 :     Basis spec.
593 :     3. Edited source code throughout the system to make it compile again
594 :     under 1. and 2. (In some cases code had to be added to have it
595 :     match the new signatures.)
596 :     4. MLRISC should be backward-compatible: the copies of the originals
597 :     of files that needed to change under 3. were retained, the .cm files
598 :     check the compiler version number and use old versions when
599 :     appropriate.
600 :     5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
601 :     dirstream -> string option (in accordance with Basis spec).
602 :     6. When generating code that counts lines, ml-lex used function
603 :     CharVector.foldli, taking advantage of its old interface.
604 :     This has been replaced with the corresponding code from
605 :     CharVectorSlice. (html-lex must be re-lexed!)
606 :     7. BitArray in smlnj-lib/Util has been extended/modified to match the
607 :     new MONO_ARRAY signature. (Do we need BitArraySlice?)
608 :     8. Removed temporary additions (fromInternal, toInternal) from the
609 :     (now obsolete) IntInf in smlnj-lib/Util.
610 :     9. Cleaned up structure Byte.
611 :     10. Added localOffset, scan, and fromString to Date (according to spec).
612 :     Cleaned/corrected implementation of Date.
613 :     (Still need to check for correctness; implement better canonicalizeDate.)
614 :     11. Added "scan" to signature IEEE_REAL.
615 :     12. Some improvements to IntInf [in particular: efficiency-hack for
616 :     mod and rem when second operand is 2 (for parity checks).]
617 :     13. Changed representation of type Time.time, using a single IntInf.int
618 :     value counting microseconds. This considerably simplified the
619 :     implementation of structure Time. We now support negative time
620 :     values; scan and fromString handle signs.
621 :     14. Functor PrimIO now takes two additional arguments (VectorSlice and
622 :     ArraySlice).
623 :    
624 :     ----------------------------------------------------------------------
625 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
626 : mblume 1347 Date: 2003/08/28 17:00:00 CDT
627 :     Tag: blume-20030828-intinf
628 :     Description:
629 :    
630 :     This is a major update which comes with a version number bump
631 :     (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
632 :     and an implementation of IntInf in the Basis.
633 :    
634 :     There are a fairly large number of related changes and updates throughout
635 :     the system:
636 :    
637 :     Basis:
638 :     - Implemented IntInf.
639 :     - Made LargeInt a projection of IntInf (by filtering through INTEGER).
640 : mblume 1348 - Added some missing Real64 operations, most notably Real.toLargeInt.
641 : mblume 1347 - Added FixedInt as a synonym for Int32.
642 :    
643 :     compiler:
644 :     * Added support for a built-in intinf type.
645 :     - literals
646 :     - pattern matching
647 :     - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
648 :     - overloading on literals and operations
649 :    
650 :     This required adding a primitive type intinf, some additional
651 :     primops, and implementations for several non-trivial intinf
652 :     operations in Core. (The intinf type is completely abstract
653 :     to the compiler; all operations get delegated back to the Core.)
654 :    
655 :     * Intinf equality is handled by polyequal. However, the compiler
656 :     does not print its usual warning in this case (since polyequal
657 :     is the right thing to do there).
658 :    
659 :     * Improved the organization of structure InlineT.
660 :    
661 :     * A word about conversion primops:
662 :     If conversions involving intinf do not cancel out during
663 : mblume 1348 CPS contract, then the compiler must insert calls to Core functions.
664 : mblume 1347 Since all core access must be resolved already during the FLINT
665 :     translate phase, it would be too late a the time of CPS contract
666 : mblume 1348 to add new Core calls. For this reason, conversion primops
667 : mblume 1347 for intinf carry two arguments: 1. the numeric argument that
668 :     they are supposed to convert, and 2. the Core function that
669 :     can help with this conversion if necessary. If CPS contract
670 : mblume 1348 eliminates a primop, then the associated Core function becomes
671 :     dead and goes away. Intinf conversion primops that do not get
672 :     eliminated by CPS contract get rewritten into calls of their
673 :     core functions by a separate, new phase.
674 : mblume 1347
675 :     interactive system:
676 :     - Control.Print.intinfDepth controls max length of intinf constants
677 :     being printed. (Analogous to Control.Print.stringDepth.)
678 :     - Cleanup in printutil and pputil: got rid of unused stuff and
679 :     duplicates; replaced some of the code with code that makes better
680 :     use of library functionality.
681 :    
682 :     CM:
683 :     Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
684 :     are no longer silent.
685 :    
686 :     CKIT:
687 :     Fixed mismatched uses of Int32 and LargeInt. I always decided
688 :     in favor of LargeInt -- which is now the same as IntInf.
689 :     CKIT-knowledgable people should check whether this is what's
690 :     intended and otherwise change things back to using Int32 or
691 :     FixedInt.
692 :    
693 :     Throughout the code:
694 : mblume 1348 Started using IntInf.int literals and built-in operations
695 : mblume 1347 (e.g., comparison with 0) where this seems appropriate.
696 :    
697 :    
698 :     ----------------------------------------------------------------------
699 : macqueen 1343 Name: Dave MacQueen (dbm@cs.uchicago.edu)
700 :     Date: 2003/08/13 11:36:00 CDT
701 :     Tag: dbm-20030813-mcz-merge1
702 :     Description:
703 :    
704 :     Merging changes from the mcz-branch development branch into trunk.
705 :     These changes involve replacement of the emulated old prettyprinter
706 :     interface with direct use of the SML/NJ Lib PP library, and fixing
707 :     of a couple of bugs (895, 1186) relating to error messages. A new
708 :     prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
709 :     has been added.
710 :    
711 :     ----------------------------------------------------------------------
712 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
713 : mblume 1342 Date: 2003/08/11 15:45:00 CDT
714 :     Tag: blume-20030811-windows
715 :     Description:
716 :    
717 :     Version number bumped to 110.42.9. NEW BOOTFILES!!!
718 :    
719 :     http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
720 :    
721 :     This patch restores SML/NJ's ability to run under win32. There are a
722 :     number of changes, including fixes for several bugs that had gone
723 :     unnoticed until now:
724 :    
725 :     - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
726 :     trying to run the win32 version from within cygwin.)
727 :    
728 :     - There are a number of simple .bat scripts that substitute for their
729 :     corresponding Unix shell-scripts. (See below.)
730 :    
731 :     - The internals of ml-build have been modified slightly. The main
732 :     difference is that instead of calling ".link-sml" (or link-sml.bat)
733 :     using OS.Process.system, the ML process delegates this task back
734 :     to the script. Otherwise problems arise in mixed environments such
735 :     as Cygwin where scripts look and work like Unix scripts, but
736 :     where OS.Process.system cannot run them.
737 :    
738 :     - In CM, the srcpath pickler used native pathname syntax -- which
739 :     is incorrect in the case of cross-compilation. The new pickle format
740 :     is independent of platform-specific naming conventions.
741 :    
742 :     - Path configuration files (such as lib/pathconfig) can now choose
743 :     between native and standard syntax. Placing a line of the form
744 :    
745 :     standard!
746 :    
747 :     into the file causes all subsequent paths to be interpreted using
748 :     CM standard pathname syntax (= Unix conventions); a line
749 :    
750 :     native!
751 :    
752 :     switches back to native style. This was needed so that
753 :     path config files can be written portably, see src/system/pathconfig.
754 :    
755 :     - Runtime system:
756 :    
757 :     - win32-filesys.c: get_file_time and set_file_time now
758 :     access modification time, not creation time.
759 :    
760 :     - I/O code made aware of new array representation.
761 :    
762 :     - Bug fixes in X86.prim.masm.
763 :    
764 :     - src/system/makeml made aware of win32. (For use under cygwin
765 :     and other Unix-environments for windows.)
766 :    
767 :     - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
768 :     which caused BinIO.inputAll to fail consistently.
769 :    
770 :     .bat scripts:
771 :    
772 :     Windows .bat scripts assume that SMLNJ_HOME is defined.
773 :    
774 :     - sml.bat, ml-yacc.bat, ml-lex.bat: Driver scripts for standalone
775 :     applications (sml, ml-yacc, ml-lex).
776 :     - ml-build.bat: analogous to ml-build.
777 :     - config\install.bat: Analogous to config/install.sh. This requires
778 :     that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
779 :     (nmake etc. must be on the path, and vcvars32 must have been run.)
780 :     Moreover, sources for ml-lex and ml-yacc need to exist under src,
781 :     and the bootfile hierarchy must have been unpacked under
782 :     sml.boot.x86-win32.
783 :     The script is very primitive and does a poor job at error checking.
784 :     It only installs the base system, ml-lex, and ml-yacc. No other
785 :     libraries are being installed (i.e., you get only those that
786 :     are part of the compiler.)
787 :     - link-sml.bat: analogous to .link-sml, but not currently used
788 :    
789 :     Unrelated bug fixes:
790 :    
791 :     - ml-nlffigen now exports structures ST_* corresponding to incomplete
792 :     types.
793 :     - Added getDevice to PP/src/pp-debug-fn.sml. (Would not compile
794 :     otherwise.)
795 :    
796 :     ----------------------------------------------------------------------
797 : macqueen 1337 Name: Dave MacQueen (macqueen@cs.uchicago.edu)
798 :     Date: 2003/06/17
799 :     Tag: macqueen-20030617-bug895
800 :     Description:
801 :    
802 :     Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
803 :     Tag will be used for new development branch (mcz-branch) for
804 :     use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
805 :    
806 :     ----------------------------------------------------------------------
807 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
808 : mblume 1335 Date: 2003/05/27 16:55:00 CDT
809 :     Tag: blume-20030527-polyeq
810 :     Description:
811 :    
812 :     Tried to eliminated most cases of polymorphic equality.
813 :    
814 :     ----------------------------------------------------------------------
815 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
816 : mblume 1334 Date: 2003/05/21 17:45:00 CDT
817 :     Tag: blume-20030517-complete
818 :     Description:
819 :    
820 :     Two changes:
821 :    
822 :     1. Added a flag for controlling whether non-exhaustive bindings will
823 :     be treated as errors (default is false).
824 :     2. Cleaned up the *entire* source tree so that CMB.make goes through
825 :     without a single non-exhaustive match- or bind warning.
826 :    
827 :     ----------------------------------------------------------------------
828 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
829 : mblume 1332 Date: 2003/05/17 10:20:00 CDT
830 :     Tag: blume-20030517-absyn
831 :     Description:
832 :    
833 :     1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
834 :    
835 :     This mainly affects the quality of error messages. However, some
836 :     of the code is now more straightforward than before. (Treatment of
837 :     the above four constructs in translate.sml is much simpler than
838 :     the "macro-expansion" that was going on before. Plus, the mach-
839 :     compiler no longer gets invoked just to be able to compile an
840 :     if-expression.)
841 :    
842 :     2. The ErrorMsg.Error exception is now caught and absorbed by the
843 :     interactive loop.
844 :    
845 :     ----------------------------------------------------------------------
846 : allenleung 1327 Name: Allen Leung
847 :     Date: 2003/05/16 13:05:00 CDT
848 :     Tag: leunga-20030516-cygwin-runtime
849 :     Description:
850 :    
851 :     Ported the runtime system to cygwin, which uses the unix
852 :     x86-unix bin files. Missing/buggy features:
853 :    
854 :     o getnetbyname, getnetbyaddr: these functions seem to be missing in
855 :     the Cygwin library.
856 :     o Ctrl-C handling may be flaky.
857 :     o Windows system calls and Windows I/O are not supported.
858 :    
859 :     A new set of binfiles is located at:
860 :    
861 :     http://www.dorsai.org/~leunga/boot.x86-unix.tgz
862 :    
863 :     This is only needed for bootstrapping the cygwin version of smlnj.
864 :     Other x86 versions can use the existing binfiles.
865 :    
866 :     ----------------------------------------------------------------------
867 : mblume 1317 Name: Matthias Blume
868 :     Date: 2003/04/08 15:42:00 CDT
869 :     Tag: blume-20030408-listpair
870 :     Description:
871 :    
872 :     1. Added a target 'mlrisc' to installer.
873 :    
874 :     2. Added missing elements to structure ListPair.
875 :    
876 :     ----------------------------------------------------------------------
877 : leunga 1296 Name: Allen Leung
878 :     Date: 2003/01/07 10:40:00 EST
879 :     Tag: leunga-20030107-int-rem
880 :     Description:
881 :    
882 :     Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
883 :     The arguments to the SUBL instruction were swapped.
884 :    
885 :     ----------------------------------------------------------------------
886 : blume 1229 Name: Matthias Blume
887 : blume 1294 Date: 2002/12/12 16:25:00 EST
888 :     Tag: blume-20021212-risc-ra
889 :     Description:
890 :    
891 :     Fixed a serious bug in the rewrite code for FP spilling/reloading that
892 :     sent the RA into an infinite loop when floating point registers get
893 :     spilled. (Because of this bug, e.g., nucleic stopped compiling between
894 :     110.37 and 110.38.)
895 :     There was another set of potential problems related to the handling of
896 :     MLRISC annotations (but those did not yet cause real problems, apparently).
897 :    
898 :     ----------------------------------------------------------------------
899 :     Name: Matthias Blume
900 : blume 1291 Date: 2002/12/06 22:40:00 EST
901 :     Tag: blume-20021206-cm-fileid
902 :     Description:
903 :    
904 :     Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
905 :     This fixes the problem of CM getting confused by files that suddenly
906 :     change their identity (e.g., by getting unlinked and recreated by some
907 :     text editor such as vi). There might be a better/cheaper/cleaner way
908 :     of doing this, but for now this will have to do.
909 :    
910 :     ----------------------------------------------------------------------
911 :     Name: Matthias Blume
912 : blume 1288 Date: 2002/10/28 09:50:00 EST
913 :     Tag: blume-20021028-typecheck
914 :     Description:
915 :    
916 :     Exported structure Typecheck from $smlnj/viscomp/core.cm.
917 :    
918 :     ----------------------------------------------------------------------
919 :     Name: Matthias Blume
920 : blume 1282 Date: 2002/10/17 09:10:00 EDT
921 : blume 1279 Tag: Release_110_42
922 :     Description:
923 :    
924 : blume 1282 In good old tradition, there has been a slight hiccup so that we have
925 :     to patch 110.42 after the fact. The old release tag has been replaced
926 :     (see below).
927 :    
928 :     The change solves a problem with two competing approaches the
929 :     configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
930 :     each other's way.
931 :    
932 :     This change only affects the runtime system code and the installer script.
933 :     (No new bootfiles.)
934 :    
935 :     ----------------------------------------------------------------------
936 :     Name: Matthias Blume
937 :     Date: 2002/10/16 12:00:00 EDT
938 :     Tag: Release_110_42_removed
939 :     Description:
940 :    
941 : blume 1279 New working release. New bootfiles.
942 :    
943 :     ----------------------------------------------------------------------
944 :     Name: Matthias Blume
945 : blume 1273 Date: 2002/10/10 13:10:00 EDT
946 :     Tag: blume-20021010-ppc-divs
947 :     Description:
948 :    
949 :     The mltree operator DIVS must be implemented with an overflow check on
950 :     the PPC because the hardware indicates divide-by-zero using "overflow" as
951 :     well.
952 :    
953 :     ----------------------------------------------------------------------
954 :     Name: Matthias Blume
955 : blume 1261 Date: 2002/07/23 11:45:00
956 :     Tag: blume-20020723-smlnj-home
957 :     Description:
958 :    
959 :     Sml now senses the SMLNJ_HOME environment variable. If this is set,
960 :     then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
961 :     CM_PATHCONFIG is also set), the path configuration file is assumed
962 :     to be in $SMLNJ_HOME/lib/pathconfig. This way one can easily move
963 :     the entire tree to some other place and everything will "just work".
964 :    
965 :     (Companion commands such as ml-build and ml-makedepend also sense this
966 :     variable.)
967 :    
968 :     ----------------------------------------------------------------------
969 :     Name: Matthias Blume
970 : blume 1259 Date: 2002/07/12 21:19:00 EDT
971 :     Tag: blume-20020712-liveness
972 :     Description:
973 :    
974 :     Exported two useful "step" functions from liveness module (MLRISC).
975 :    
976 :     ----------------------------------------------------------------------
977 :     Name: Matthias Blume
978 : blume 1253 Date: 2002/07/05 16:00 EDT
979 :     Tag: Release_110_41
980 :     Description:
981 :    
982 :     New working release. New bootfiles.
983 :    
984 :     ----------------------------------------------------------------------
985 :     Name: Matthias Blume
986 : blume 1250 Date: 2002/07/05 10:25:00 EDT
987 :     Tag: blume-20020705-btimp
988 :     Description:
989 :    
990 :     Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
991 :     other clients can set up backtracing support.
992 :    
993 :     ----------------------------------------------------------------------
994 :     Name: Matthias Blume
995 : blume 1249 Date: 2002/06/25 17:23:00 EDT
996 :     Tag: blume-20020625-fpmax
997 :     Description:
998 :    
999 :     Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
1000 :     case. (The sense of the isNaN test was reversed -- which made min and
1001 :     max always return their first argument.)
1002 :    
1003 :     ----------------------------------------------------------------------
1004 :     Name: Matthias Blume
1005 : blume 1240 Date: 2002/06/11
1006 :     Tag: blume-20020611-unixpath
1007 :     Description:
1008 :    
1009 :     Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
1010 :    
1011 :     ----------------------------------------------------------------------
1012 :     Name: Matthias Blume
1013 : blume 1238 Date: 2002/06/10 16:35:00 EDT
1014 :     Tag: blume-20020610-ieeereal
1015 :     Description:
1016 :    
1017 :     I back-ported my implementation of IEEEReal.fromString from the
1018 :     idlbasis-devel branch so that we can test it.
1019 :    
1020 :     Another small change is that ppDec tries to give more information
1021 :     than just "<sig>" in the case of functors. However, this code is
1022 :     broken in some mysterious way if the functor's body's signature
1023 :     has not been declared by ascription but gets inferred from the
1024 :     implementation. This needs fixing...
1025 :    
1026 :     ----------------------------------------------------------------------
1027 :     Name: Matthias Blume
1028 : blume 1229 Date: 2002/05/31
1029 :     Tag: blume-20020531-btrace-mode
1030 :     Description:
1031 :    
1032 :     Resurrected SMLofNJ.Internals.BTrace.mode. (It accidentally fell by
1033 :     the wayside when I switched over to using Controls everywhere.)
1034 :    
1035 :     ----------------------------------------------------------------------
1036 : george 1222 Name: Lal George
1037 :     Date: 2002/05/23 12:21:40 EDT
1038 :     Tag: george-20020523-visual-labels
1039 :     Description:
1040 :    
1041 :     Labels are now displayed in the graphical output to make
1042 :     the fall-through and target blocks obvious.
1043 :    
1044 :     ----------------------------------------------------------------------
1045 : blume 1204 Name: Matthias Blume
1046 : blume 1220 Date: 2002/05/22 11:03:00 EDT
1047 :     Tag: blume-20020522-shrink
1048 :     Description:
1049 :    
1050 :     John tweaked yesterday's fix for 1131 to handle an out-of-memory
1051 :     situation that comes up when allocating huge arrays.
1052 :    
1053 :     ----------------------------------------------------------------------
1054 :     Name: Matthias Blume
1055 : blume 1215 Date: 2002/05/21 16:00:00 EDT
1056 :     Tag: Release_110_40
1057 :     Description:
1058 :    
1059 :     New working release (110.40). New bootfiles.
1060 :    
1061 :     [Also: John Reppy fixed GC bug 1131.]
1062 :    
1063 :     ----------------------------------------------------------------------
1064 :     Name: Matthias Blume
1065 : blume 1212 Date: 2002/05/21 12:35:00 EDT
1066 :     Tag: blume-20020521-cmdoc
1067 :     Description:
1068 :    
1069 :     CM documentation update.
1070 :    
1071 :     ----------------------------------------------------------------------
1072 :     Name: Matthias Blume
1073 : blume 1211 Date: 2002/05/21 10:55:00 EDT
1074 :     Tag: blume-20020521-misc
1075 :     Description:
1076 :    
1077 :     - John tweaked runtime to be silent on heap export (except when
1078 :     GC messages are on).
1079 :     - I added a few more things (cross-compiling versions of CMB) to
1080 :     config/preloads (as suggestions).
1081 :    
1082 :     ----------------------------------------------------------------------
1083 :     Name: Matthias Blume
1084 : blume 1208 Date: 2002/05/20 22:25:00 EDT
1085 :     Tag: blume-20020520-controls
1086 :     Description:
1087 :    
1088 :     - Added ControlUtil structure to control-lib.cm.
1089 :     - Use it throughout.
1090 :     - Used Controls facility to define MLRISC controls (as opposed to
1091 :     registering MLRISC control ref cells with Controls after the fact)
1092 :     - Fixed messed-up controls priorities.
1093 :    
1094 :     * Removed again all the stuff from config/preloads that one wouldn't
1095 :     be able to preload at the time the initial heap image is built.
1096 :     (Many libraries, e.g., CML, do not exist yet at this time. The
1097 :     only libraries that can be preloaded via config/preloads are those
1098 :     that come bundled with the bootfiles.)
1099 :    
1100 :     ----------------------------------------------------------------------
1101 :     Name: Matthias Blume
1102 : blume 1204 Date: 2002/05/20 10:59:00 EDT
1103 :     Tag: blume-20020520-preloads
1104 :     Description:
1105 :    
1106 :     Added a lot of commented-out suggestions for things to be included
1107 :     in config/preloads.
1108 :    
1109 :     ----------------------------------------------------------------------
1110 : leunga 1203 Name: Allen Leung
1111 :     Date: 2002/05/18 14:20:00 EDT
1112 :     Tag: leunga-20020518-mdl
1113 :     Description:
1114 :    
1115 :     o Made the mdl tool stuff compile and run again.
1116 :     o I've disabled all the stuff that depends on RTL specifications; they
1117 :     are all badly broken anyway.
1118 :    
1119 :     ----------------------------------------------------------------------
1120 : blume 1201 Name: Matthias Blume
1121 :     Date: 2002/05/17 16:49:00 EDT
1122 :     Tag: blume-20020517-controls
1123 :     Description:
1124 :    
1125 :     0. John Reppy made several modifications to the SML/NJ library.
1126 :     In particular, there is a shiny new controls-lib.cm.
1127 :    
1128 :     1. Pushed new controls interface through compiler so that everything
1129 :     compiles again.
1130 :    
1131 :     2. Added FormatComb and FORMAT_COMB to the CML version of the
1132 :     SML/NJ library (so that CML compiles again).
1133 :    
1134 :     3. Modified init scripts because XXX_DEFAULT environment variables
1135 :     are no longer with us. (Boot-time initialization is now done
1136 :     using the same environment variables that are also used for
1137 :     startup-time initialization of controls.)
1138 :    
1139 :     ----------------------------------------------------------------------
1140 : george 1192 Name: Lal George
1141 :     Date: 2002/05/15 09:20:10 EDT
1142 :     Tag: george-20020515-pseudo-op-decls
1143 :     Description:
1144 :    
1145 :     All pseudo-ops emitted before the first segment declaration
1146 :     such as TEXT, DATA, and BSS directives are assumed to be global
1147 :     declarations and are emitted first in the assembly file. This is
1148 :     useful in a number of situations where one has pseudo-ops that are not
1149 :     specific to any segment, and also works around the constraint that one
1150 :     cannot have client pseudo-ops in the TEXT segment.
1151 :    
1152 :     Because no segment is associated with these declarations it is
1153 :     an error to allocate any space or objects before the first segment
1154 :     directive and an exception will be raised. However, we cannot make
1155 :     this check for client pseudo-ops.
1156 :    
1157 :     These top level declarations are a field in the CFG graph_info.
1158 :     In theory you can continue to add to this field after the CFG has been
1159 :     built -- provided you know what you are doing;-)
1160 :    
1161 :     ----------------------------------------------------------------------
1162 : blume 1175 Name: Matthias Blume
1163 : blume 1190 Date: 2002/05/13 16:40:00 EDT
1164 :     Tag: blume-20020513-pp-etc
1165 :     Description:
1166 :    
1167 :     A few minor bugfixes:
1168 :    
1169 :     - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
1170 :     (Bogus printouts for redefined bindings still occur. Compiler
1171 :     bug should no longer occur now. We need to redo the prettyprinter
1172 :     from scratch.)
1173 :    
1174 :     - CM pathname printer now also adds escape sequences for ( and )
1175 :    
1176 :     - commend and docu fixes for ml-nlffi
1177 :    
1178 :     ----------------------------------------------------------------------
1179 :     Name: Matthias Blume
1180 : blume 1189 Date: 2002/05/10 16:40:00 EDT
1181 :     Tag: blume-20020510-erg-textio
1182 :     Description:
1183 :    
1184 :     Applied the following bugfix provided by Emden Gansner:
1185 :    
1186 :     Output is corrupted when outputSubstr is used rather than output.
1187 :    
1188 :     The problem occurs when a substring
1189 :    
1190 :     ss = (s, dataStart, dataLen)
1191 :    
1192 :     where dataStart > 0, fills a stream buffer with avail bytes left.
1193 :     avail bytes of s, starting at index dataStart, are copied into the
1194 :     buffer, the buffer is flushed, and then the remaining dataLen-avail
1195 :     bytes of ss are copied into the beginning of the buffer. Instead of
1196 :     starting this copy at index dataStart+avail in s, the current code
1197 :     starts the copy at index avail.
1198 :    
1199 :     Fix:
1200 :     In text-io-fn.sml, change line 695 from
1201 :     val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
1202 :     to
1203 :     val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
1204 :    
1205 :     ----------------------------------------------------------------------
1206 :     Name: Matthias Blume
1207 : blume 1186 Date: 2002/04/12 13:55:00 EDT
1208 :     Tag: blume-20020412-assyntax
1209 :     Description:
1210 :    
1211 :     1. Grabbed newer assyntax.h from the XFree86 project.
1212 :     2. Fiddled with how to compile X86.prim.asm without warnings.
1213 :     3. (Very) Minor cleanup in CM.
1214 :    
1215 :     ----------------------------------------------------------------------
1216 :     Name: Matthias Blume
1217 : blume 1185 Date: 2002/04/01 (no joke!) 17:07:00 EST
1218 :     Tag: blume-20020401-x86div
1219 :     Description:
1220 :    
1221 :     Added full support for div/mod/rem/quot on the x86, using the machine
1222 :     instruction's two results (without clumsily recomputing the remainder)
1223 :     directly where appropriate.
1224 :    
1225 :     Some more extensive power-of-two support was added to the x86 instruction
1226 :     selector (avoiding expensive divs, mods, and muls where they can be
1227 :     replaced with cheaper shifts and masks). However, this sort of thing
1228 :     ought to be done earlier, e.g., within the CPS optimizer so that
1229 :     all architectures benefit from it.
1230 :    
1231 :     The compiler compiles to a fixed point, but changes might be somewhat
1232 :     fragile nevertheless. Please, report any strange things that you might
1233 :     see wrt. div/mod/quot/rem...
1234 :    
1235 :     ----------------------------------------------------------------------
1236 :     Name: Matthias Blume
1237 : blume 1184 Date: 2002/03/29 17:22:00
1238 :     Tag: blume-20020329-div
1239 :     Description:
1240 :    
1241 :     Fixed my broken div/mod logic. Unfortunately, this means that the
1242 :     inline code for div/mod now has one more comparison than before.
1243 :     Fast paths (quotient > 0 or remainder = 0) are not affected, though.
1244 :     The problem was with quotient = 0, because that alone does not tell
1245 :     us which way the rounding went. One then has to look at whether
1246 :     remainder and divisor have the same sign... :(
1247 :    
1248 :     Anyway, I replaced the bootfiles with fresh ones...
1249 :    
1250 :     ----------------------------------------------------------------------
1251 :     Name: Matthias Blume
1252 : blume 1183 Date: 2002/03/29 14:10:00 EST
1253 :     Tag: blume-20020329-inlprims
1254 :     Description:
1255 :    
1256 :     NEW BOOTFILES!!! Version number bumped to 110.39.3.
1257 :    
1258 :     Primops have changed. This means that the bin/boot-file formats have
1259 :     changed as well.
1260 :    
1261 :     To make sure that there is no confusion, I made a new version.
1262 :    
1263 :    
1264 :     CHANGES:
1265 :    
1266 :     * removed REMT from mltree (remainder should never overflow).
1267 :    
1268 :     * added primops to deal with divisions of all flavors to the frontend
1269 :    
1270 :     * handled these primops all the way through so they map to their respective
1271 :     MLRISC support
1272 :    
1273 :     * used these primops in the implementation of Int, Int32, Word, Word32
1274 :    
1275 :     * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
1276 :    
1277 :     * parameterized INLMIN, INLMAX, and INLABS by a numkind
1278 :    
1279 :     * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
1280 :     floating point
1281 :    
1282 :     * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
1283 :     and Real (but Real.abs maps to a separate floating-point-only primop)
1284 :    
1285 :    
1286 :     TODO items:
1287 :    
1288 :     * Hacked Alpha32 instruction selection, disabling the selection of REMx
1289 :     instructions because the machine instruction encoder cannot handle
1290 :     them. (Hppa, PPC, and Sparc instruction selection did not handle
1291 :     REM in the first place, and REM is supported by the x86 machine coder.)
1292 :    
1293 :     * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
1294 :     selection phase. (The two can be streamlined because the hardware
1295 :     delivers both quotient and remainder at the same time anyway.)
1296 :    
1297 :     * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
1298 :     (Currently the behavior is inconsistent both across architectures and
1299 :     wrt. the draft Basis spec.)
1300 :    
1301 :     * Word8 should eventually be handled natively, too.
1302 :    
1303 :     * There seems to be one serious bug in mltree-gen.sml. It appears, though,
1304 :     as if there currently is no execution path that could trigger it in
1305 :     SML/NJ. (The assumptions underlying functions arith and promotable do not
1306 :     hold for things like multiplication and division.)
1307 :    
1308 :     ----------------------------------------------------------------------
1309 :     Name: Matthias Blume
1310 : blume 1181 Date: 2002/03/27 16:27:00 EST
1311 :     Tag: blume-20020327-mlrisc-divisions
1312 :     Description:
1313 :    
1314 :     Added support for all four division operations (ML's div, mod, quot,
1315 :     and rem) to MLRISC. In the course of doing so, I also rationalized
1316 :     the naming (no more annoying switch-around of DIV and QUOT), by
1317 :     parameterizing the operation by div_rounding_mode (which can be either
1318 :     DIV_TO_ZERO or DIV_TO_NEGINF).
1319 :    
1320 :     The generic MLTreeGen functor takes care of compiling all four
1321 :     operations down to only round-to-zero div.
1322 :    
1323 :     Missing pieces:
1324 :    
1325 :     * Doing something smarter than relying on MLTreeGen on architectures
1326 :     like, e.g., the x86 where hardware division delivers both quotient and
1327 :     remainder at the same time. With this, the implementation of the
1328 :     round-to-neginf operations could be further streamlined.
1329 :    
1330 :     * Remove inlining support for div/mod/rem from the frontend and replace it
1331 :     with primops that get carried through to the backend. Do this for all
1332 :     int and word types.
1333 :    
1334 :     ----------------------------------------------------------------------
1335 :     Name: Matthias Blume
1336 : blume 1180 Date: 2002/03/25 17:25:00 EST
1337 :     Tag: blume-20020325-divmod
1338 :     Description:
1339 :    
1340 :     I improved (hopefully without breaking them) the implementation of Int.div,
1341 :     Int.mod, and Int.rem. For this, the code in translate.sml now takes
1342 :     advantage of the following observations:
1343 :    
1344 :     Let q = x quot y r = x rem y
1345 :     d = x div y m = x mod y
1346 :    
1347 :     where "quot" is the round-to-zero version of integer division that
1348 :     hardware usually provides. Then we have:
1349 :    
1350 :     r = x - q * y where neither the * nor the - will overflow
1351 :     d = if q >= 0 orelse x = q * y then q else q - 1
1352 :     where neither the * nor the - will overflow
1353 :     m = if q >= 0 orelse r = 0 then r else r + y
1354 :     where the + will not overflow
1355 :    
1356 :     This results in substantial simplification of the generated code.
1357 :     The following table shows the number of CFG nodes and edges generated
1358 :     for
1359 :     fun f (x, y) = x OPER y
1360 :     (* with OPER \in div, mod, quot, rem *)
1361 :    
1362 :    
1363 :     OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
1364 :     --------------------------------------------------------
1365 :     div | 24 | 39 | 12 | 16
1366 :     mod | 41 | 71 | 12 | 16
1367 :     quot | 8 | 10 | 8 | 10
1368 :     rem | 10 | 14 | 8 | 10
1369 :    
1370 :    
1371 :     ----------------------------------------------------------------------
1372 :     Name: Matthias Blume
1373 : blume 1179 Date: 2002/03/25 22:06:00 EST
1374 :     Tag: blume-20020325-cprotobug
1375 :     Description:
1376 :    
1377 :     Fixed a bug in cproto (c prototype decoder).
1378 :    
1379 :     ----------------------------------------------------------------------
1380 :     Name: Matthias Blume
1381 : blume 1178 Date: 2002/03/25 16:00:00 EST
1382 :     Tag: blume-20020325-raw-primops
1383 :     Description:
1384 :    
1385 :     I did some cleanup to Allen's new primop code and
1386 :     replaced yesterday's bootfiles with new ones.
1387 :     (But they are stored in the same place.)
1388 :    
1389 :     ----------------------------------------------------------------------
1390 :     Name: Matthias Blume
1391 : blume 1175 Date: 2002/03/24 22:40:00 EST
1392 :     Tag: blume-20020324-bootfiles
1393 :     Description:
1394 :    
1395 :     Made the bootfiles that Allen asked for.
1396 :    
1397 :     ----------------------------------------------------------------------
1398 : leunga 1174 Name: Allen Leung
1399 :     Date: 2002/03/23 15:50:00 EST
1400 :     Tag: leunga-20020323-flint-cps-rcc-primops
1401 :     Description:
1402 :    
1403 :     1. Changes to FLINT primops:
1404 :    
1405 :     (* make a call to a C-function;
1406 :     * The primop carries C function prototype information and specifies
1407 :     * which of its (ML-) arguments are floating point. C prototype
1408 :     * information is for use by the backend, ML information is for
1409 :     * use by the CPS converter. *)
1410 :     | RAW_CCALL of { c_proto: CTypes.c_proto,
1411 :     ml_args: ccall_type list,
1412 :     ml_res_opt: ccall_type option,
1413 :     reentrant : bool
1414 :     } option
1415 :     (* Allocate uninitialized storage on the heap.
1416 :     * The record is meant to hold short-lived C objects, i.e., they
1417 :     * are not ML pointers. With the tag, the representation is
1418 :     * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
1419 :     *)
1420 :     | RAW_RECORD of {tag:bool,sz:int}
1421 :     and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
1422 :    
1423 :     2. These CPS primops are now overloaded:
1424 :    
1425 :     rawload of {kind:numkind}
1426 :     rawstore of {kind:numkind}
1427 :    
1428 :     The one argument form is:
1429 :    
1430 :     rawload {kind} address
1431 :    
1432 :     The two argument form is:
1433 :    
1434 :     rawload {kind} [ml object, byte-offset]
1435 :    
1436 :     3. RAW_CCALL/RCC now takes two extra arguments:
1437 :    
1438 :     a. The first is whether the C call is reentrant, i.e., whether
1439 :     ML state should be saved and restored.
1440 :     b. The second argument is a string argument specifying the name of
1441 :     library and the C function.
1442 :    
1443 :     These things are currently not handled in the code generator, yet.
1444 :    
1445 :     4. In CProto,
1446 :    
1447 :     An encoding type of "bool" means "ml object" and is mapped into
1448 :     C prototype of PTR. Note that "bool" is different than "string",
1449 :     even though "string" is also mapped into PTR, because "bool"
1450 :     is assigned an CPS type of BOGt, while "string" is assigned INT32t.
1451 :    
1452 :     5. Pickler/unpicker
1453 :    
1454 :     Changed to handle RAW_RECORD and newest RAW_CCALL
1455 :    
1456 :     6. MLRiscGen,
1457 :    
1458 :     1. Changed to handle the new rawload/rawstore/rawrecord operators.
1459 :     2. Code for handling C Calls has been moved to a new module CPSCCalls,
1460 :     in the file CodeGen/cpscompile/cps-c-calls.sml
1461 :    
1462 :     7. Added the conditional move operator
1463 :    
1464 :     condmove of branch
1465 :    
1466 :     to cps. Generation of this is still buggy so it is currently
1467 :     disabled.
1468 :    
1469 :     ----------------------------------------------------------------------
1470 : george 1168 Name: Lal George
1471 :     Date: 2002/03/22 14:18:25 EST
1472 : george 1171 Tag: george-20020322-cps-branch-prob
1473 : george 1168 Description:
1474 :    
1475 : george 1171 Implemented the Ball-Larus branch prediction-heuristics, and
1476 : george 1168 incorporated graphical viewers for control flow graphs.
1477 :    
1478 : george 1171 Ball-Larus Heuristics:
1479 : george 1168 ---------------------
1480 :     See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
1481 :    
1482 :     By design it uses the Dempster-Shafer theory for combining
1483 :     probabilities. For example, in the function:
1484 :    
1485 :     fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
1486 :    
1487 :     the ball-larus heuristics predicts that the n=0 is unlikely
1488 :     (OH-heuristic), and the 'then' branch is unlikely because of the
1489 :     RH-heuristic -- giving the 'then' branch an even lower combined
1490 : george 1171 probability using the Dempster-Shafer theory.
1491 : george 1168
1492 :     Finally, John Reppy's loop analysis in MLRISC, further lowers the
1493 :     probability of the 'then' branch because of the loop in the else
1494 :     branch.
1495 :    
1496 :    
1497 :     Graphical Viewing:
1498 :     ------------------
1499 :     I merely plugged in Allen's graphical viewers into the compiler. The
1500 :     additional code is not much. At the top level, saying:
1501 :    
1502 :     Control.MLRISC.getFlag "cfg-graphical-view" := true;
1503 :    
1504 :     will display the graphical view of the control flow graph just before
1505 :     back-patching. daVinci must be in your path for this to work. If
1506 :     daVinci is not available, then the default viewer can be changed
1507 :     using:
1508 :    
1509 :     Control.MLRISC.getString "viewer"
1510 :    
1511 :     which can be set to "dot" or "vcg" for the corresponding viewers. Of
1512 :     course, these viewers must be in your path.
1513 :    
1514 :     The above will display the compilation unit at the level of clusters,
1515 :     many of which are small, boring, and un-interesting. Also setting:
1516 :    
1517 :     Control.MLRISC.getInt "cfg-graphical-view_size"
1518 :    
1519 :     will display clusters that are larger than the value set by the above.
1520 :    
1521 :    
1522 :     ----------------------------------------------------------------------
1523 : blume 1159 Name: Matthias Blume
1524 :     Date: 2002/03/21 22:20:00 EST
1525 :     Tag: blume-20020321-kmp-bugfix
1526 :     Description:
1527 :    
1528 :     Changed the interface to the KMP routine in PreString and fixed
1529 :     a minor bug in one place where it was used.
1530 :    
1531 :     ----------------------------------------------------------------------
1532 : leunga 1156 Name: Allen Leung
1533 : leunga 1158 Date: 2002/03/21 20:30:00 EST
1534 :     Tag: leunga-20020321-cfg
1535 :     Description:
1536 :    
1537 :     Fixed a potential problem in cfg edge splitting.
1538 :    
1539 :     ----------------------------------------------------------------------
1540 :     Name: Allen Leung
1541 : leunga 1156 Date: 2002/03/21 17:15:00 EST
1542 :     Tag: leunga-20020321-x86-fp-cfg
1543 :     Description:
1544 :    
1545 :     1. Recoded the buggy parts of x86-fp.
1546 :    
1547 :     a. All the block reordering code has been removed.
1548 :     We now depend on the block placement phases to do this work.
1549 :    
1550 :     b. Critical edge splitting code has been simplified and moved into the
1551 :     CFG modules, as where they belong.
1552 :    
1553 :     Both of these were quite buggy and complex. The code is now much, much
1554 :     simpler.
1555 :    
1556 :     2. X86 backend.
1557 :    
1558 :     a. Added instructions for 64-bit support. Instruction selection for
1559 :     64-bit has not been committed, however, since that
1560 :     requires changes to MLTREE which haven't been approved by
1561 :     Lal and John.
1562 :    
1563 :     b. Added support for FUCOMI and FUCOMIP when generating code for
1564 :     PentiumPro and above. We only generate these instructions in
1565 :     the fast-fp mode.
1566 :    
1567 :     c. Added cases for JP and JNP in X86FreqProps.
1568 :    
1569 :     3. CFG
1570 :    
1571 :     CFG now has a bunch of methods for edge splitting and merging.
1572 :    
1573 :     4. Machine description.
1574 :    
1575 :     John's simplification of MLTREE_BASIS.fcond broke a few machine
1576 :     description things:
1577 :    
1578 :     rtl-build.{sig,sml} and hppa.mdl fixed.
1579 :    
1580 :     NOTE: the machine description stuff in the repository is still broken.
1581 :     Again, I can't put my fixes in because that involves
1582 :     changes to MLTREE.
1583 :    
1584 :     ----------------------------------------------------------------------
1585 : blume 1145 Name: Matthias Blume
1586 : blume 1155 Date: 2002/03/20 15:55:00 EST
1587 :     Tag: blume-20020320-kmp
1588 :     Description:
1589 :    
1590 :     Implemented Knuth-Morris-Pratt string matching in PreString and used
1591 :     it for String.isSubstring, Substring.isSubstring, and
1592 :     Substring.position.
1593 :    
1594 :     (Might need some stress-testing. Simple examples worked fine.)
1595 :    
1596 :     ----------------------------------------------------------------------
1597 :     Name: Matthias Blume
1598 : blume 1152 Date: 2002/03/19 16:37:00 EST
1599 :     Tag: blume-20020319-witnesses
1600 :     Description:
1601 :    
1602 :     Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
1603 :    
1604 :     This implements a generic mechanism for changing constness qualifiers
1605 :     anywhere within big C types without resorting to outright "casts".
1606 :     (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
1607 :     modify the constness at the outermost level.)
1608 :     The implementation of "convert" is based on the idea of "witness"
1609 :     values -- values that are not used by the operation but whose types
1610 :     "testify" to their applicability. On the implementation side, "convert"
1611 :     is simply a projection (returning its second curried argument). With
1612 :     cross-module inlining, it should not result in any machine code being
1613 :     generated.
1614 :    
1615 :     ----------------------------------------------------------------------
1616 :     Name: Matthias Blume
1617 : blume 1148 Date: 2002/03/15 16:40:00 EST
1618 :     Tag: blume-20020315-basis
1619 :     Description:
1620 :    
1621 :     Provided (preliminary?) implementations for
1622 :    
1623 :     {String,Substring}.{concatWith,isSuffix,isSubstring}
1624 :    
1625 :     and
1626 :    
1627 :     Substring.full
1628 :    
1629 :     Those are in the Basis spec but they were missing in SML/NJ.
1630 :    
1631 :     ----------------------------------------------------------------------
1632 :     Name: Matthias Blume
1633 : blume 1145 Date: 2002/03/14 21:30:00 EST
1634 :     Tag: blume-20020314-controls
1635 :     Description:
1636 :    
1637 :     Controls:
1638 :     ---------
1639 :    
1640 :     1. Factored out the recently-added Controls : CONTROLS stuff and put
1641 :     it into its own library $/controls-lib.cm. The source tree for
1642 :     this is under src/smlnj-lib/Controls.
1643 :    
1644 :     2. Changed the names of types and functions in this interface, so they
1645 :     make a bit more "sense":
1646 :    
1647 :     module -> registry
1648 :     'a registry -> 'a group
1649 :    
1650 :     3. The interface now deals in ref cells only. The getter/setter interface
1651 :     is (mostly) gone.
1652 :    
1653 :     4. Added a function that lets one register an already-existing ref cell.
1654 :    
1655 :     5. Made the corresponding modifications to the rest of the code so that
1656 :     everything compiles again.
1657 :    
1658 :     6. Changed the implementation of Controls.MLRISC back to something closer
1659 :     to the original. In particular, this module (and therefore MLRISC)
1660 :     does not depend on Controls. There now is some link-time code in
1661 :     int-sys.sml that registers the MLRISC controls with the Controls
1662 :     module.
1663 :    
1664 :     CM:
1665 :     ---
1666 :    
1667 :     * One can now specify the lambda-split aggressiveness in init.cmi.
1668 :    
1669 :     ----------------------------------------------------------------------
1670 : leunga 1142 Name: Allen Leung
1671 :     Date: 2002/03/13 17:30:00 EST
1672 :     Tag: leunga-20020313-x86-fp-unary
1673 :     Description:
1674 :    
1675 :     Bug fix for:
1676 :    
1677 :     > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
1678 :     > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
1679 :     > - fun f(x,(y,z)) = Real.~ y;
1680 :     > [autoloading]
1681 :     > [autoloading done]
1682 :     > fchsl (%eax), 184(%esp)
1683 :     > Error: MLRisc bug: X86MCEmitter.emitInstr
1684 :     >
1685 :     > uncaught exception Error
1686 :     > raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
1687 :    
1688 :     The problem was that the code generator did not generate any fp registers
1689 :     in this case, and the ra didn't know that it needed to run the X86FP phase to
1690 :     translate the pseudo fp instruction. This only happened with unary fp
1691 :     operators in certain situations.
1692 :    
1693 :     ----------------------------------------------------------------------
1694 : blume 1137 Name: Matthias Blume
1695 : blume 1140 Date: 2002/03/13 14:00:00 EST
1696 :     Tag: blume-20020313-overload-etc
1697 :     Description:
1698 :    
1699 :     1. Added _overload as a synonym for overload for backward compatibility.
1700 :     (Control.overloadKW must be true for either version to be accepted.)
1701 :    
1702 :     2. Fixed bug in install script that caused more things to be installed
1703 :     than what was requested in config/targets.
1704 :    
1705 :     3. Made CM aware of the (_)overload construct so that autoloading
1706 :     works.
1707 :    
1708 :     ----------------------------------------------------------------------
1709 :     Name: Matthias Blume
1710 : blume 1138 Date: 2002/03/12 22:03:00 EST
1711 :     Tag: blume-20020312-url
1712 :     Description:
1713 :    
1714 :     Forgot to update BOOT and srcarchiveurl.
1715 :    
1716 :     ----------------------------------------------------------------------
1717 :     Name: Matthias Blume
1718 : blume 1137 Date: 2002/03/12 17:30:00 EST
1719 :     Tag: blume-20020312-version110392
1720 :     Description:
1721 :    
1722 :     Yet another version number bump (because of small changes to the
1723 :     binfile format). Version number is now 110.39.2. NEW BOOTFILES!
1724 :    
1725 :     Changes:
1726 :    
1727 :     The new pid generation scheme described a few weeks ago was overly
1728 :     complicated. I implemented a new mechanism that is simpler and
1729 :     provides a bit more "stability": Once CM has seen a compilation
1730 :     unit, it keeps its identity constant (as long as you do not delete
1731 :     those crucial CM/GUID/* files). This means that when you change
1732 : blume 1145 an interface, compile, then go back to the old interface, and
1733 : blume 1137 compile again, you arrive at the original pid.
1734 :    
1735 :     There now also is a mechanism that instructs CM to use the plain
1736 :     environment hash as a module's pid (effectively making its GUID
1737 :     the empty string). For this, "noguid" must be specified as an
1738 :     option to the .sml file in question within its .cm file.
1739 :     This is most useful for code that is being generated by tools such
1740 :     as ml-nlffigen (because during development programmers tend to
1741 :     erase the tool's entire output directory tree including CM's cached
1742 :     GUIDs). "noguid" is somewhat dangerous (since it can be used to locally
1743 :     revert to the old, broken behavior of SML/NJ, but in specific cases
1744 :     where there is no danger of interface confusion, its use is ok
1745 :     (I think).
1746 :    
1747 :     ml-nlffigen by default generates "noguid" annotations. They can be
1748 :     turned off by specifying -guid in its command line.
1749 :    
1750 :     ----------------------------------------------------------------------
1751 : george 1136 Name: Lal George
1752 :     Date: 2002/03/12 12 14:42:36 EST
1753 :     Tag: george-20020312-frequency-computation
1754 :     Description:
1755 :    
1756 :     Integrated jump chaining and static block frequency into the
1757 :     compiler. More details and numbers later.
1758 : leunga 1025
1759 : george 1003 ----------------------------------------------------------------------
1760 : george 1133 Name: Lal George
1761 :     Date: 2002/03/11 11 22:38:53 EST
1762 :     Tag: george-20020311-jump-chain-elim
1763 :     Description:
1764 :    
1765 :     Tested the jump chain elimination on all architectures (except the
1766 :     hppa). This is on by default right now and is profitable for the
1767 :     alpha and x86, however, it may not be profitable for the sparc and ppc
1768 :     when compiling the compiler.
1769 :    
1770 :     The gc test will typically jump to a label at the end of the cluster,
1771 :     where there is another jump to an external cluster containing the actual
1772 :     code to invoke gc. This is to allow factoring of common gc invocation
1773 :     sequences. That is to say, we generate:
1774 :    
1775 :     f:
1776 :     testgc
1777 :     ja L1 % jump if above to L1
1778 :    
1779 :     L1:
1780 :     jmp L2
1781 :    
1782 :    
1783 :     After jump chain elimination the 'ja L1' instructions is converted to
1784 :     'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end
1785 :     up being implemented in their long form (if L2 is far away) using:
1786 :    
1787 :     jbe L3 % jump if below or equal to L3
1788 :     jmp L2
1789 :     L3:
1790 :     ...
1791 :    
1792 :    
1793 :     For large compilation units L2 may be far away.
1794 :    
1795 :    
1796 :     ----------------------------------------------------------------------
1797 : blume 1132 Name: Matthias Blume
1798 :     Date: 2002/03/11 13:30:00 EST
1799 :     Tag: blume-20020311-mltreeeval
1800 :     Description:
1801 :    
1802 :     A functor parameter was missing.
1803 :    
1804 :     ----------------------------------------------------------------------
1805 : leunga 1130 Name: Allen Leung
1806 : leunga 1131 Date: 2002/03/11 10:30:00 EST
1807 : leunga 1142 Tag: leunga-20020311-runtime-string0
1808 : leunga 1131 Description:
1809 :    
1810 :     The representation of the empty string now points to a
1811 :     legal null terminated C string instead of unit. It is now possible
1812 :     to convert an ML string into C string with InlineT.CharVector.getData.
1813 :     This compiles into one single machine instruction.
1814 :    
1815 :     ----------------------------------------------------------------------
1816 :     Name: Allen Leung
1817 : leunga 1130 Date: 2002/03/10 23:55:00 EST
1818 :     Tag: leunga-20020310-x86-call
1819 :     Description:
1820 :    
1821 :     Added machine generation for CALL instruction (relative displacement mode)
1822 :    
1823 :     ----------------------------------------------------------------------
1824 : blume 1128 Name: Matthias Blume
1825 :     Date: 2002/03/08 16:05:00
1826 :     Tag: blume-20020308-entrypoints
1827 :     Description:
1828 :    
1829 :     Version number bumped to 110.39.1. NEW BOOTFILES!
1830 :    
1831 :     Entrypoints: non-zero offset into a code object where execution should begin.
1832 :    
1833 :     - Added the notion of an entrypoint to CodeObj.
1834 :     - Added reading/writing of entrypoint info to Binfile.
1835 :     - Made runtime system bootloader aware of entrypoints.
1836 :     - Use the address of the label of the first function given to mlriscGen
1837 :     as the entrypoint. This address is currently always 0, but it will
1838 :     not be 0 once we turn on block placement.
1839 :     - Removed the linkage cluster code (which was The Other Way(tm) of dealing
1840 :     with entry points) from mlriscGen.
1841 :    
1842 :     ----------------------------------------------------------------------
1843 : leunga 1127 Name: Allen Leung
1844 :     Date: 2002/03/07 20:45:00 EST
1845 :     Tag: leunga-20020307-x86-cmov
1846 :     Description:
1847 :    
1848 :     Bug fixes for CMOVcc on x86.
1849 :    
1850 :     1. Added machine code generation for CMOVcc
1851 :     2. CMOVcc is now generated in preference over SETcc on PentiumPro or above.
1852 :     3. CMOVcc cannot have an immediate operand as argument.
1853 :    
1854 :     ----------------------------------------------------------------------
1855 : blume 1126 Name: Matthias Blume
1856 :     Date: 2002/03/07 16:15:00 EST
1857 :     Tag: blume-20020307-controls
1858 :     Description:
1859 :    
1860 :     This is a very large but mostly boring patch which makes (almost)
1861 :     every tuneable compiler knob (i.e., pretty much everything under
1862 :     Control.* plus a few other things) configurable via both the command
1863 :     line and environment variables in the style CM did its configuration
1864 :     until now.
1865 :    
1866 :     Try starting sml with '-h' (or, if you are brave, '-H')
1867 :    
1868 :     To this end, I added a structure Controls : CONTROLS to smlnj-lib.cm which
1869 :     implements the underlying generic mechanism.
1870 :    
1871 :     The interface to some of the existing such facilities has changed somewhat.
1872 :     For example, the MLRiscControl module now provides mkFoo instead of getFoo.
1873 :     (The getFoo interface is still there for backward-compatibility, but its
1874 :     use is deprecated.)
1875 :    
1876 :     The ml-build script passes -Cxxx=yyy command-line arguments through so
1877 :     that one can now twiddle the compiler settings when using this "batch"
1878 :     compiler.
1879 :    
1880 :     TODO items:
1881 :    
1882 :     We should go through and throw out all controls that are no longer
1883 :     connected to anything. Moreover, we should go through and provide
1884 :     meaningful (and correct!) documentation strings for those controls
1885 :     that still are connected.
1886 :    
1887 :     Currently, multiple calls to Controls.new are accepted (only the first
1888 :     has any effect). Eventually we should make sure that every control
1889 :     is being made (via Controls.new) exactly once. Future access can then
1890 :     be done using Controls.acc.
1891 :    
1892 :     Finally, it would probably be a good idea to use the getter-setter
1893 :     interface to controls rather than ref cells. For the time being, both
1894 :     styles are provided by the Controls module, but getter-setter pairs are
1895 :     better if thread-safety is of any concern because they can be wrapped.
1896 :    
1897 :     *****************************************
1898 :    
1899 :     One bug fix: The function blockPlacement in three of the MLRISC
1900 :     backpatch files used to be hard-wired to one of two possibilities at
1901 :     link time (according to the value of the placementFlag). But (I
1902 :     think) it should rather sense the flag every time.
1903 :    
1904 :     *****************************************
1905 :    
1906 :     Other assorted changes (by other people who did not supply a HISTORY entry):
1907 :    
1908 :     1. the cross-module inliner now works much better (Monnier)
1909 :     2. representation of weights, frequencies, and probabilities in MLRISC
1910 :     changed in preparation of using those for weighted block placement
1911 :     (Reppy, George)
1912 :    
1913 :     ----------------------------------------------------------------------
1914 : george 1116 Name: Lal George
1915 : george 1124 Date: 2002/03/07 14:44:24 EST 2002
1916 :     Tag: george-20020307-weighted-block-placement
1917 :    
1918 :     Tested the weighted block placement optimization on all architectures
1919 :     (except the hppa) using AMPL to generate the block and edge frequencies.
1920 :     Changes were required in the machine properties to correctly
1921 :     categorize trap instructions. There is an MLRISC flag
1922 :     "weighted-block-placement" that can be used to enable weighted block
1923 :     placement, but this will be ineffective without block/edge
1924 :     frequencies (coming soon).
1925 :    
1926 :    
1927 :     ----------------------------------------------------------------------
1928 :     Name: Lal George
1929 : george 1116 Date: 2002/03/05 17:24:48 EST
1930 :     Tag: george-20020305-linkage-cluster
1931 :    
1932 : george 1124 In order to support the block placement optimization, a new cluster
1933 :     is generated as the very first cluster (called the linkage cluster).
1934 :     It contains a single jump to the 'real' entry point for the compilation
1935 :     unit. Block placement has no effect on the linkage cluster itself, but
1936 :     all the other clusters have full freedom in the manner in which they
1937 :     reorder blocks or functions.
1938 : george 1116
1939 :     On the x86 the typical linkage code that is generated is:
1940 :     ----------------------
1941 :     .align 2
1942 :     L0:
1943 :     addl $L1-L0, 72(%esp)
1944 : george 1124 jmp L1
1945 : george 1116
1946 :    
1947 :     .align 2
1948 :     L1:
1949 :     ----------------------
1950 :    
1951 :     72(%esp) is the memory location for the stdlink register. This
1952 :     must contain the address of the CPS function being called. In the
1953 : george 1124 above example, it contains the address of L0; before
1954 : george 1116 calling L1 (the real entry point for the compilation unit), it
1955 :     must contain the address for L1, and hence
1956 :    
1957 :     addl $L1-L0, 72(%esp)
1958 :    
1959 : george 1124 I have tested this on all architectures except the hppa.The increase
1960 :     in code size is of course negligible
1961 : george 1116
1962 :     ----------------------------------------------------------------------
1963 : leunga 1115 Name: Allen Leung
1964 :     Date: 2002/03/03 13:20:00 EST
1965 :     Tag: leunga-20020303-mlrisc-tools
1966 :    
1967 :     Added #[ ... ] expressions to mlrisc tools
1968 :    
1969 :     ----------------------------------------------------------------------
1970 : blume 1096 Name: Matthias Blume
1971 : blume 1098 Date: 2002/02/27 12:29:00 EST
1972 :     Tag: blume-20020227-cdebug
1973 :     Description:
1974 :    
1975 :     - made types in structure C and C_Debug to be equal
1976 :     - got rid of code duplication (c-int.sml vs. c-int-debug.sml)
1977 :     - there no longer is a C_Int_Debug (C_Debug is directly derived from C)
1978 :    
1979 :     ----------------------------------------------------------------------
1980 :     Name: Matthias Blume
1981 : blume 1096 Date: 2002/02/26 12:00:00 EST
1982 :     Tag: blume-20020226-ffi
1983 :     Description:
1984 :    
1985 :     1. Fixed a minor bug in CM's "noweb" tool:
1986 :     If numbering is turned off, then truly don't number (i.e., do not
1987 :     supply the -L option to noweb). The previous behavior was to supply
1988 :     -L'' -- which caused noweb to use the "default" line numbering scheme.
1989 :     Thanks to Chris Richards for pointing this out (and supplying the fix).
1990 :    
1991 :     2. Once again, I reworked some aspects of the FFI:
1992 :    
1993 :     A. The incomplete/complete type business:
1994 :    
1995 :     - Signatures POINTER_TO_INCOMPLETE_TYPE and accompanying functors are
1996 :     gone!
1997 :     - ML types representing an incomplete type are now *equal* to
1998 :     ML types representing their corresponding complete types (just like
1999 :     in C). This is still safe because ml-nlffigen will not generate
2000 :     RTTI for incomplete types, nor will it generate functions that
2001 :     require access to such RTTI. But when ML code generated from both
2002 :     incomplete and complete versions of the C type meet, the ML types
2003 :     are trivially interoperable.
2004 :    
2005 :     NOTE: These changes restore the full generality of the translation
2006 :     (which was previously lost when I eliminated functorization)!
2007 :    
2008 :     B. Enum types:
2009 :    
2010 :     - Structure C now has a type constructor "enum" that is similar to
2011 :     how the "su" constructor works. However, "enum" is not a phantom
2012 :     type because each "T enum" has values (and is isomorphic to
2013 :     MLRep.Signed.int).
2014 :     - There are generic access operations for enum objects (using
2015 :     MLRep.Signed.int).
2016 :     - ml-nlffigen will generate a structure E_foo for each "enum foo".
2017 :     * The structure contains the definition of type "mlrep" (the ML-side
2018 :     representation type of the enum). Normally, mlrep is the same
2019 :     as "MLRep.Signed.int", but if ml-nlffigen was invoked with "-ec",
2020 :     then mlrep will be defined as a datatype -- thus facilitating
2021 :     pattern matching on mlrep values.
2022 :     ("-ec" will be suppressed if there are duplicate values in an
2023 :     enumeration.)
2024 :     * Constructors ("-ec") or values (no "-ec") e_xxx of type mlrep
2025 :     will be generated for each C enum constant xxx.
2026 :     * Conversion functions m2i and i2m convert between mlrep and
2027 :     MLRep.Signed.int. (Without "-ec", these functions are identities.)
2028 :     * Coversion functions c and ml convert between mlrep and "tag enum".
2029 :     * Access functions (get/set) fetch and store mlrep values.
2030 :     - By default (unless ml-nlffigen was invoked with "-nocollect"), unnamed
2031 :     enumerations are merged into one single enumeration represented by
2032 :     structure E_'.
2033 :    
2034 :     ----------------------------------------------------------------------
2035 : leunga 1080 Name: Allen Leung
2036 : leunga 1094 Date: 2002/02/25 04:45:00 EST
2037 :     Tag: leunga-20020225-cps-spill
2038 :    
2039 :     This is a new implementation of the CPS spill phase.
2040 :     The new phase is in the new file compiler/CodeGen/cpscompile/spill-new.sml
2041 :     In case of problems, replace it with the old file spill.sml
2042 :    
2043 :     The current compiler runs into some serious performance problems when
2044 :     constructing a large record. This can happen when we try to compile a
2045 :     structure with many items. Even a very simple structure like the following
2046 :     makes the compiler slow down.
2047 :    
2048 :     structure Foo = struct
2049 :     val x_1 = 0w1 : Word32.int
2050 :     val x_2 = 0w2 : Word32.int
2051 :     val x_3 = 0w3 : Word32.int
2052 :     ...
2053 :     val x_N = 0wN : Word32.int
2054 :     end
2055 :    
2056 :     The following table shows the compile time, from N=1000 to N=4000,
2057 :     with the old compiler:
2058 :    
2059 :     N
2060 :     1000 CPS 100 spill 0.04u 0.00s 0.00g
2061 :     MLRISC ra 0.06u 0.00s 0.05g
2062 :     (spills = 0 reloads = 0)
2063 :     TOTAL 0.63u 0.07s 0.21g
2064 :    
2065 :     1100 CPS 100 spill 8.25u 0.32s 0.64g
2066 :     MLRISC ra 5.68u 0.59s 3.93g
2067 :     (spills = 0 reloads = 0)
2068 :     TOTAL 14.71u 0.99s 4.81g
2069 :    
2070 :     1500 CPS 100 spill 58.55u 2.34s 1.74g
2071 :     MLRISC ra 5.54u 0.65s 3.91g
2072 :     (spills = 543 reloads = 1082)
2073 :     TOTAL 65.40u 3.13s 6.00g
2074 :    
2075 :     2000 CPS 100 spill 126.69u 4.84s 3.08g
2076 :     MLRISC ra 0.80u 0.10s 0.55g
2077 :     (spills = 42 reloads = 84)
2078 :     TOTAL 129.42u 5.10s 4.13g
2079 :    
2080 :     3000 CPS 100 spill 675.59u 19.03s 11.64g
2081 :     MLRISC ra 2.69u 0.27s 1.38g
2082 :     (spills = 62 reloads = 124)
2083 :     TOTAL 682.48u 19.61s 13.99g
2084 :    
2085 :     4000 CPS 100 spill 2362.82u 56.28s 43.60g
2086 :     MLRISC ra 4.96u 0.27s 2.72g
2087 :     (spills = 85 reloads = 170)
2088 :     TOTAL 2375.26u 57.21s 48.00g
2089 :    
2090 :     As you can see the old cps spill module suffers from some serious
2091 : leunga 1115 performance problem. But since I cannot decipher the old code fully,
2092 :     instead of patching the problems up, I'm reimplementing it
2093 : leunga 1094 with a different algorithm. The new code is more modular,
2094 :     smaller when compiled, and substantially faster
2095 :     (O(n log n) time and O(n) space). Timing of the new spill module:
2096 :    
2097 :     4000 CPS 100 spill 0.02u 0.00s 0.00g
2098 :     MLRISC ra 0.25u 0.02s 0.15g
2099 :     (spills=1 reloads=3)
2100 :     TOTAL 7.74u 0.34s 1.62g
2101 :    
2102 :     Implementation details:
2103 :    
2104 :     As far as I can tell, the purpose of the CPS spill module is to make sure the
2105 :     number of live variables at any program point (the bandwidth)
2106 :     does not exceed a certain limit, which is determined by the
2107 :     size of the spill area.
2108 :    
2109 :     When the bandwidth is too large, we decrease the register pressure by
2110 :     packing live variables into spill records. How we achieve this is
2111 :     completely different than what we did in the old code.
2112 :    
2113 :     First, there is something about the MLRiscGen code generator
2114 :     that we should be aware of:
2115 :    
2116 :     o MLRiscGen performs code motion!
2117 :    
2118 :     In particular, it will move floating point computations and
2119 :     address computations involving only the heap pointer to
2120 :     their use sites (if there is only a single use).
2121 :     What this means is that if we have a CPS record construction
2122 :     statement
2123 :    
2124 :     RECORD(k,vl,w,e)
2125 :    
2126 :     we should never count the new record address w as live if w
2127 :     has only one use (which is often the case).
2128 :    
2129 :     We should do something similar to floating point, but the transformation
2130 :     there is much more complex, so I won't deal with that.
2131 :    
2132 :     Secondly, there are now two new cps primops at our disposal:
2133 :    
2134 :     1. rawrecord of record_kind option
2135 :     This pure operator allocates some uninitialized storage from the heap.
2136 :     There are two forms:
2137 :    
2138 :     rawrecord NONE [INT n] allocates a tagless record of length n
2139 :     rawrecord (SOME rk) [INT n] allocates a tagged record of length n
2140 :     and initializes the tag.
2141 :    
2142 :     2. rawupdate of cty
2143 :     rawupdate cty (v,i,x)
2144 :     Assigns to x to the ith component of record v.
2145 :     The storelist is not updated.
2146 :    
2147 :     We use these new primops for both spilling and increment record construction.
2148 :    
2149 :     1. Spilling.
2150 :    
2151 :     This is implemented with a linear scan algorithm (but generalized
2152 :     to trees). The algorithm will create a single spill record at the
2153 :     beginning of the cps function and use rawupdate to spill to it,
2154 :     and SELECT or SELp to reload from it. So both spills and reloads
2155 :     are fine-grain operations. In contrast, in the old algorithm
2156 :     "spills" have to be bundled together in records.
2157 :    
2158 :     Ideally, we should sink the spill record construction to where
2159 :     it is needed. We can even split the spill record into multiple ones
2160 :     at the places where they are needed. But CPS is not a good
2161 :     representation for global code motion, so I'll keep it simple and
2162 :     am not attempting this.
2163 :    
2164 :     2. Incremental record construction (aka record splitting).
2165 :    
2166 :     Long records with many component values which are simulatenously live
2167 :     (recall that single use record addresses are not considered to
2168 :     be live) are constructed with rawrecord and rawupdate.
2169 :     We allocate space on the heap with rawrecord first, then gradually
2170 :     fill it in with rawupdate. This is the technique suggested to me
2171 :     by Matthias.
2172 :    
2173 :     Some restrictions on when this is applicable:
2174 :     1. It is not a VECTOR record. The code generator currently does not handle
2175 :     this case. VECTOR record uses double indirection like arrays.
2176 :     2. All the record component values are defined in the same "basic block"
2177 :     as the record constructor. This is to prevent speculative
2178 :     record construction.
2179 :    
2180 :     ----------------------------------------------------------------------
2181 :     Name: Allen Leung
2182 : leunga 1086 Date: 2002/02/22 01:02:00 EST
2183 :     Tag: leunga-20020222-mlrisc-tools
2184 :    
2185 :     Minor bug fixes in the parser and rewriter
2186 :    
2187 :     ----------------------------------------------------------------------
2188 :     Name: Allen Leung
2189 : leunga 1085 Date: 2002/02/21 20:20:00 EST
2190 :     Tag: leunga-20020221-peephole
2191 :    
2192 :     Regenerated the peephole files. Some contained typos in the specification
2193 :     and some didn't compile because of pretty printing bugs in the old version
2194 :     of 'nowhere'.
2195 :    
2196 :     ----------------------------------------------------------------------
2197 :     Name: Allen Leung
2198 : leunga 1079 Date: 2002/02/19 20:20:00 EST
2199 :     Tag: leunga-20020219-mlrisc-tools
2200 :     Description:
2201 :    
2202 :     Minor bug fixes to the mlrisc-tools library:
2203 :    
2204 :     1. Fixed up parsing colon suffixed keywords
2205 :     2. Added the ability to shut the error messages up
2206 :     3. Reimplemented the pretty printer and fixed up/improved
2207 :     the pretty printing of handle and -> types.
2208 :     4. Fixed up generation of literal symbols in the nowhere tool.
2209 :     5. Added some SML keywords to to sml.sty
2210 :    
2211 :     ----------------------------------------------------------------------
2212 :     Name: Matthias Blume
2213 : blume 1078 Date: 2002/02/19 16:20:00 EST
2214 :     Tag: blume-20020219-cmffi
2215 :     Description:
2216 :    
2217 :     A wild mix of changes, some minor, some major:
2218 :    
2219 :     * All C FFI-related libraries are now anchored under $c:
2220 :     $/c.cm --> $c/c.cm
2221 :     $/c-int.cm --> $c/internals/c-int.cm
2222 :     $/memory.cm --> $c/memory/memory.cm
2223 :    
2224 :     * "make" tool (in CM) now treats its argument pathname slightly
2225 :     differently:
2226 :     1. If the native expansion is an absolute name, then before invoking
2227 :     the "make" command on it, CM will apply OS.Path.mkRelative
2228 :     (with relativeTo = OS.FileSys.getDir()) to it.
2229 :     2. The argument will be passed through to subsequent phases of CM
2230 :     processing without "going native". In particular, if the argument
2231 :     was an anchored path, then "make" will not lose track of that anchor.
2232 :    
2233 :     * Compiler backends now "know" their respective C calling conventions
2234 :     instead of having to be told about it by ml-nlffigen. This relieves
2235 :     ml-nlffigen from one of its burdens.
2236 :    
2237 :     * The X86Backend has been split into X86CCallBackend and X86StdCallBackend.
2238 :    
2239 :     * Export C_DEBUG and C_Debug from $c/c.cm.
2240 :    
2241 :     * C type encoding in ml-nlffi-lib has been improved to model the conceptual
2242 :     subtyping relationship between incomplete pointers and their complete
2243 :     counterparts. For this, ('t, 'c) ptr has been changed to 'o ptr --
2244 :     with the convention of instantiating 'o with ('t, 'c) obj whenever
2245 :     the pointer target type is complete. In the incomplete case, 'o
2246 :     will be instantiated with some "'c iobj" -- a type obtained by
2247 :     using one of the functors PointerToIncompleteType or PointerToCompleteType.
2248 :    
2249 :     Operations that work on both incomplete and complete pointer types are
2250 :     typed as taking an 'o ptr while operations that require the target to
2251 :     be known are typed as taking some ('t, 'c) obj ptr.
2252 :    
2253 :     voidptr is now a bit "more concrete", namely "type voidptr = void ptr'"
2254 :     where void is an eqtype without any values. This makes it possible
2255 :     to work on voidptr values using functions meant to operate on light
2256 :     incomplete pointers.
2257 :    
2258 :     * As a result of the above, signature POINTER_TO_INCOMPLETE_TYPE has
2259 :     been vastly simplified.
2260 :    
2261 :     ----------------------------------------------------------------------
2262 :     Name: Matthias Blume
2263 : blume 1076 Date: 2002/02/19 10:48:00 EST
2264 :     Tag: blume-20020219-pqfix
2265 :     Description:
2266 :    
2267 :     Applied Chris Okasaki's bug fix for priority queues.
2268 :    
2269 :     ----------------------------------------------------------------------
2270 :     Name: Matthias Blume
2271 : blume 1073 Date: 2002/02/15 17:05:00
2272 : blume 1069 Tag: Release_110_39
2273 :     Description:
2274 :    
2275 : blume 1073 Last-minute retagging is becoming a tradition... :-(
2276 :    
2277 :     This is the working release 110.39.
2278 :    
2279 :     ----------------------------------------------------------------------
2280 :     Name: Matthias Blume
2281 :     Date: 2002/02/15 16:00:00 EST
2282 :     Tag: Release_110_39-orig
2283 :     Description:
2284 :    
2285 : blume 1069 Working release 110.39. New bootfiles.
2286 :    
2287 : blume 1073 (Update: There was a small bug in the installer so it wouldn't work
2288 :     with all shells. So I retagged. -Matthias)
2289 :    
2290 : blume 1069 ----------------------------------------------------------------------
2291 :     Name: Matthias Blume
2292 : blume 1068 Date: 2002/02/15 14:17:00 EST
2293 :     Tag: blume-20020215-showbindings
2294 :     Description:
2295 :    
2296 :     Added EnvRef.listBoundSymbols and CM.State.showBindings. Especially
2297 :     the latter can be useful for exploring what bindings are available at
2298 :     the interactive prompt. (The first function returns only the list
2299 :     of symbols that are really bound, the second prints those but also the
2300 :     ones that CM's autoloading mechanism knows about.)
2301 :    
2302 :     ----------------------------------------------------------------------
2303 :     Name: Matthias Blume
2304 : blume 1067 Date: 2002/02/15 12:08:00 EST
2305 :     Tag: blume-20020215-iptrs
2306 :     Description:
2307 :    
2308 :     Two improvements to ml-nlffigen:
2309 :    
2310 :     1. Write files only if they do not exist or if their current contents
2311 :     do not coincide with what's being written. (That is, avoid messing
2312 :     with the time stamps unless absolutely necessary.)
2313 :    
2314 :     2. Implement a "repository" mechanism for generated files related
2315 :     to "incomplete pointer types". See the README file for details.
2316 :    
2317 :     ----------------------------------------------------------------------
2318 :     Name: Matthias Blume
2319 : blume 1066 Date: 2002/02/14 11:50:00 EST
2320 :     Tag: blume-20020214-quote
2321 :     Description:
2322 :    
2323 :     Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm). This is required
2324 :     because of the new and improved tag generation scheme. (Thanks to Allen
2325 :     Leung for pointing it out.)
2326 :    
2327 :     ----------------------------------------------------------------------
2328 : george 1065 Name: Lal George
2329 :     Date: 2002/02/14 09:55:27 EST 2002
2330 :     Tag: george-20020214-isabelle-bug
2331 :     Description:
2332 :    
2333 :     Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
2334 :     of Isabelle on the x86.
2335 :    
2336 :     From Allen:
2337 :     -----------
2338 :     I've found the problem:
2339 :    
2340 :     in ra-core.sml, I use the counter "blocked" to keep track of the
2341 :     true number of elements in the freeze queue. When the counter goes
2342 :     to zero, I skip examining the queue. But I've messed up the
2343 :     bookkeeping in combine():
2344 :    
2345 :     else ();
2346 :     case !ucol of
2347 :     PSEUDO => (if !cntv > 0 then
2348 :     (if !cntu > 0 then blocked := !blocked - 1 else ();
2349 :     ^^^^^^^^^^^^^^^^^^^^^^^
2350 :     moveu := mergeMoveList(!movev, !moveu)
2351 :     )
2352 :     else ();
2353 :    
2354 :     combine() is called to coalesce two nodes u and v.
2355 :     I think I was thinking that if the move counts of u and v are both
2356 :     greater than zero then after they are coalesced then one node is
2357 :     removed from the freeze queue. Apparently I was thinking that
2358 :     both u and v are of low degree, but that's clearly not necessarily true.
2359 :    
2360 :    
2361 :     02/12/2002:
2362 :     Here's the patch. HOL now compiles.
2363 :    
2364 :     I don't know how this impact on performance (compile
2365 :     time or runtime). This bug caused the RA (especially on the x86)
2366 :     to go thru the potential spill phase when there are still nodes on the
2367 :     freeze queue.
2368 :    
2369 :    
2370 :    
2371 :    
2372 :     ----------------------------------------------------------------------
2373 : blume 1058 Name: Matthias Blume
2374 : blume 1064 Date: 2002/02/13 22:40:00 EST
2375 :     Tag: blume-20020213-fptr-rtti
2376 :     Description:
2377 :    
2378 :     Fixed a bug in ml-nlffigen that was introduced with one of the previous
2379 :     updates.
2380 :    
2381 :     ----------------------------------------------------------------------
2382 :     Name: Matthias Blume
2383 : blume 1063 Date: 2002/02/13 16:41:00 EST
2384 :     Tag: blume-20020213-cmlpq
2385 :     Description:
2386 :    
2387 :     Added new priority queue export symbols (which have just been added to
2388 :     smlnj-lib.cm) to CML's version of smlnj-lib.cm. (Otherwise CML would
2389 :     not compile and the installer would choke.)
2390 :    
2391 :     ----------------------------------------------------------------------
2392 :     Name: Matthias Blume
2393 : blume 1062 Date: 2002/02/13 16:15:00 EST
2394 :     Tag: blume-20020213-various
2395 :     Description:
2396 :    
2397 :     1. More tweaks to ml-nlffigen:
2398 :    
2399 :     - better internal datastructures (resulting in slight speedup)
2400 :     - "-match" option requires exact match
2401 :     - "localized" gensym counters (untagged structs/unions nested within
2402 :     other structs/unions or within typedefs get a fresh counter; their
2403 :     tag will be prefixed by a concatenation of their parents' tags)
2404 :     - bug fixes (related to calculation of transitive closure of types
2405 :     to be included in the output)
2406 :    
2407 :     2. Minor Basis updates:
2408 :    
2409 :     - added implementations for List.collate and Option.app
2410 :    
2411 :     ----------------------------------------------------------------------
2412 :     Name: Matthias Blume
2413 : blume 1060 Date: 2002/02/11 15:55:00 EST
2414 :     Tag: blume-20020211-gensym
2415 :     Description:
2416 :    
2417 :     Added a "-gensym" option to command line of ml-nlffigen. This can be
2418 :     used to specify a "stem" -- a string that is inserted in all "gensym'd"
2419 :     names (ML structure names that correspond to unnamed C structs, unions,
2420 :     and enums), so that separate runs of ml-nlffigen do not clash.
2421 :    
2422 :     ----------------------------------------------------------------------
2423 :     Name: Matthias Blume
2424 : blume 1059 Date: 2002/02/11 12:05:00 EST
2425 :     Tag: blume-20020211-gensml
2426 :     Description:
2427 :    
2428 :     A quick fix for a problem with GenSML (in the pgraph-util library):
2429 :     Make generation of toplevel "local" optional. (Strictly speaking,
2430 :     signature definitions within "local" are not legal SML.)
2431 :    
2432 :     Other than that: updates to INSTALL and cm/TODO.
2433 :    
2434 :     ----------------------------------------------------------------------
2435 :     Name: Matthias Blume
2436 : blume 1058 Date: 2002/02/08 15:00:00 EST
2437 :     Tag: blume-20020208-uniquepid
2438 :     Description:
2439 :    
2440 :     0. Version number has been bumped to 110.38.1. NEW BOOTFILES!!!
2441 :    
2442 :     1. The installer (config/install.sh) has gotten smarter:
2443 :    
2444 :     - Configuration options are a bit easier to specify now
2445 :     (in config/targets).
2446 :     - Bug in recognizing .tar.bz2 files fixed.
2447 :     - Installer automatically resolves dependencies between
2448 :     configuration options (e.g., if you ask for eXene, you will
2449 :     also get cml -- regardless whether you asked for it or not).
2450 :     - Installer can run in "quieter mode" by setting the environment
2451 :     variable INSTALL_QUIETLY to "true". "Quieter" does not mean
2452 :     "completely silent", though.
2453 :     - Build HashCons library as part of smlnj-lib.
2454 :    
2455 :     2. A new scheme for assigning persistent identifiers to compilation
2456 :     units (and, by extension, to types etc.) has been put into place.
2457 :     This fixes a long-standing bug where types and even dynamic values
2458 :     can get internally confused, thereby compromising type safety
2459 :     (abstraction) and dynamic correctness. See
2460 :    
2461 :     http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
2462 :    
2463 :     for an example of how things could go wrong until now.
2464 :    
2465 :     The downside of the new scheme is that pids are not quite as
2466 :     persistent as they used to be: CM will generate a fresh pid
2467 :     for every compilation unit that it thinks it sees for the first
2468 :     time. That means that if you compile starting from a clean, fresh
2469 :     source tree at two different times, you end up with different
2470 :     binaries.
2471 :    
2472 :     Cutoff recompilation, however, has not been compromised because
2473 :     CM keeps pid information in special caches between runs.
2474 :    
2475 :     ----------------------------------------------------------------------
2476 : george 1053 Name: Lal George
2477 : george 1055 Date: 2002/02/07 15:34:13 EST 2002
2478 :     Tag: <none>
2479 :     Description:
2480 :    
2481 :     Compilers that generate assembly code may produce global labels
2482 :     whose value is resolved at link time. The various peephole optimization
2483 :     modules did not take this in account.
2484 :    
2485 :     TODO. The Labels.addrOf function should really return an option
2486 :     type so that clients are forced to deal with this issue, rather
2487 :     than an exception being raised.
2488 :    
2489 :     ----------------------------------------------------------------------
2490 :     Name: Lal George
2491 : george 1053 Date: 2002/02/06 13:55:02 EST
2492 :     Tag: george-20020206-ra-breakup
2493 :     Description:
2494 :    
2495 :     1. A bug fix from Allen.
2496 :    
2497 :     A typo causes extra fstp %st(0)'s to be generated at compensation
2498 :     edges, which might cause stack underflow traps at runtime. This
2499 :     occurs in fft where there are extraneous fstps right before the 'into'
2500 :     trap instruction (in this case they are harmless since none of the
2501 :     integers overflow.)
2502 :    
2503 : george 1054 2. Pulled out various utility modules that were embedded in the modules
2504 : george 1053 of the register allocator. I need these modules for other purposes, but
2505 : george 1054 they are not complete enough to put into a library (just yet).
2506 : george 1053 ----------------------------------------------------------------------
2507 : blume 1049 Name: Matthias Blume
2508 :     Date: 2002/01/31 16:05:00 EST
2509 :     Tag: blume-20020131-sparc-ccalls
2510 :     Description:
2511 :    
2512 :     1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
2513 :     of extra stack space by mistake. Fixed.
2514 :    
2515 :     2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
2516 :    
2517 :     ----------------------------------------------------------------------
2518 : leunga 1048 Name: Allen Leung
2519 :     Date: 2002/01/30
2520 :     Tag: leunga-20020130-nowhere-bug-fix
2521 :     Description:
2522 :    
2523 :     MLRISC bug fixes:
2524 :     1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
2525 :     2. MachineInt.fromString was negating its value.
2526 :    
2527 :     ----------------------------------------------------------------------
2528 : blume 1039 Name: Matthias Blume
2529 : blume 1047 Date: 2002/01/29
2530 :     Tag: blume-20020129-INSTALL
2531 :     Description:
2532 :    
2533 :     - Added somewhat detailed installation instructions (file INSTALL).
2534 :     - Fixed curl-detection bug in config/install.sh.
2535 :     - It is now possible to select the URL getter using the URLGETTER
2536 :     environment variable:
2537 :    
2538 :     not set / "unknown" --> automatic detection (script tries wget,
2539 :     curl, and lynx)
2540 :     "wget" / "curl" / "lynx" --> use the specified program (script "knows"
2541 :     how to properly invoke them)
2542 :     other --> use $URLGETTER directly, it must take
2543 :     precisely two command-line arguments
2544 :     (source URL and destination file name)
2545 :    
2546 :     ----------------------------------------------------------------------
2547 :     Name: Matthias Blume
2548 : blume 1044 Date: 2002/01/28
2549 : blume 1045 Tag: blume-20020128-sparc-ccalls
2550 :     Description:
2551 :    
2552 :     - Fixed problem with calculation of "used" registers in sparc-c-calls.
2553 :     - Make use of the allocParam argument in sparc-c-calls.
2554 :    
2555 :     ----------------------------------------------------------------------
2556 :     Name: Matthias Blume
2557 :     Date: 2002/01/28
2558 : blume 1044 Tag: blume-20020128-allocParam
2559 :     Description:
2560 :    
2561 :     John Reppy: Changes c-calls API to accept client-callback for
2562 :     allocating extra stack space.
2563 :     me: Corresponding changes to mlriscGen (using a dummy argument that
2564 :     does not change the current behavior).
2565 :    
2566 :     ----------------------------------------------------------------------
2567 :     Name: Matthias Blume
2568 : blume 1040 Date: 2002/01/28 12:00:00
2569 :     Tag: Release_110_38
2570 :     Description:
2571 :    
2572 :     This time for real!!!
2573 :    
2574 :     ----------------------------------------------------------------------
2575 :     Name: Matthias Blume
2576 : blume 1039 Date: 2002/01/28 10:56:00 EST
2577 :     Tag: blume-20020128-retraction
2578 :     Description:
2579 :    
2580 :     0. Retracted earlier 110.38. (The Release_110_38 tag has been replaced
2581 :     with blume-Release_110_38-retracted.)
2582 :    
2583 :     1. Fixed a problem with incorrect rounding modes in real64.sml.
2584 :     (Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
2585 :    
2586 :     2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
2587 :     and enums fixed. The naming of corresponding ML identifiers should
2588 :     now be consistent again.
2589 :    
2590 :     ----------------------------------------------------------------------
2591 : leunga 1038 Name: Allen Leung
2592 :     Date: 2002/01/27
2593 :     Tag: leunga-20020127-nowhere
2594 :     Description:
2595 :    
2596 :     Added a target called nowhere in the configuration scripts.
2597 :     Enabling this will build the MLRISC 'nowhere' tool (for translating
2598 :     programs with where-clauses into legal SML code) during installation.
2599 :    
2600 :     ----------------------------------------------------------------------
2601 : blume 1036 Name: Matthias Blume
2602 : leunga 1038 Date: 2002/01/25 21:27:00 EST
2603 : blume 1039 Tag: blume-Release_110_38-retracted
2604 : blume 1037 Description:
2605 :    
2606 :     Call it a (working) release! Version is 110.38. Bootfiles are ready.
2607 :    
2608 :     README will be added later.
2609 :    
2610 : blume 1039 !!! NOTE: Re-tagged as blume-Release_110_38-retracted. Original tag
2611 :     (Release_110_38) removed. Reason: Last-minute bug fixes.
2612 :    
2613 : blume 1037 ----------------------------------------------------------------------
2614 :     Name: Matthias Blume
2615 : blume 1036 Date: 2002/01/25
2616 :     Tag: blume-20020125-ffi
2617 :     Description:
2618 :    
2619 :     A large number of tweaks and improvements to ml-nlffi-lib and
2620 :     ml-nlffigen:
2621 :    
2622 :     - ML represenation types have been streamlined
2623 :     - getter and setter functions work with concrete values, not abstract
2624 :     ones where possible
2625 :     - ml-nlffigen command line more flexible (see README file there)
2626 :     - some bugs have been fixed (hopefully)
2627 :    
2628 :     ----------------------------------------------------------------------
2629 : george 1034 Name: Lal George
2630 :     Date: 2002/01/24
2631 :     Tag: george-20020124-risc-ra-interface
2632 :     Description:
2633 :    
2634 :     There is a dramatic simplification in the interface to the
2635 :     register allocator for RISC architectures as a result of making
2636 :     parallel copy instructions explicit.
2637 :    
2638 :     ----------------------------------------------------------------------
2639 : blume 1028 Name: Matthias Blume
2640 : blume 1032 Date: 2002/01/22
2641 :     Tag: blume-20020122-x86-ccalls
2642 :     Description:
2643 :    
2644 :     Bug fix for c-calls on x86 (having to do with how char- and
2645 :     short-arguments are being handled).
2646 :    
2647 :     ----------------------------------------------------------------------
2648 :     Name: Matthias Blume
2649 : blume 1031 Date: 2002/01/21
2650 :     Tag: blume-20020121-ff
2651 :     Description:
2652 :    
2653 :     Another day of fiddling with the FFI...
2654 :    
2655 :     1. Bug fix/workaround: CKIT does not complain about negative array
2656 :     dimensions, so ml-nlffigen has to guard itself against this possibility.
2657 :     (Otherwise a negative dimension would send it into an infinite loop.)
2658 :    
2659 :     2. Some of the abstract types (light objects, light pointers, most "base"
2660 :     types) in structure C are now eqtypes.
2661 :    
2662 :     3. Added constructors and test functions for NULL function pointers.
2663 :    
2664 :     ----------------------------------------------------------------------
2665 :     Name: Matthias Blume
2666 : blume 1028 Date: 2002/01/18
2667 : blume 1030 Tag: blume-20020118-ready-for-new-release
2668 :     Description:
2669 :    
2670 :     Made config/srcarchiveurl point to a new place. (Will provide boot
2671 :     files shortly.)
2672 :    
2673 :     Maybe we christen this to be 110.38?
2674 :    
2675 :     ----------------------------------------------------------------------
2676 :     Name: Matthias Blume
2677 :     Date: 2002/01/18
2678 : blume 1029 Tag: blume-20020118-more-ffifiddle
2679 :     Description:
2680 :    
2681 :     Today's FFI fiddling:
2682 :    
2683 :     - Provided a structure CGetSet with "convenient" versions of C.Get.* and
2684 :     C.Set.* that use concrete (MLRep.*) arguments and results instead
2685 :     of abstract ones.
2686 :    
2687 :     - Provided word-style bit operations etc. for "int" representation
2688 :     types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
2689 :     and Long.
2690 :    
2691 :     ----------------------------------------------------------------------
2692 :     Name: Matthias Blume
2693 :     Date: 2002/01/18
2694 : blume 1028 Tag: blume-20020118-use-x86-fp
2695 :     Description:
2696 :    
2697 :     Now that x86-fast-fp seems to be working, I turned it back on again
2698 :     by default. (Seems to work fine now, even with the FFI.)
2699 :    
2700 :     Other than that, I added some documentation about the FFI to
2701 :     src/ml-nlffigen/README and updated the FFI test examples in
2702 :     src/ml-nlffi-lib/Tests/*.
2703 :    
2704 :     ----------------------------------------------------------------------
2705 : leunga 1025 Name: Allen Leung
2706 :     Date: 2002/01/17
2707 :     Tag: leunga-20020117-x86-fast-fp-call
2708 :     Description:
2709 :    
2710 :     1. Fixed a problem with handling return fp values when x86's fast fp
2711 :     mode is turned on.
2712 :    
2713 :     2. Minor pretty printing fix for cellset. Print %st(0) as %st(0) instead
2714 :     of %f32.
2715 :    
2716 :     3. Added a constructor INT32lit to the ast of MLRISC tools.
2717 :    
2718 :     ----------------------------------------------------------------------
2719 : blume 1021 Name: Matthias Blume
2720 :     Date: 2002/01/16
2721 :     Tag: blume-20020116-ffifiddle
2722 :     Description:
2723 :    
2724 :     More fiddling with the FFI interface:
2725 :    
2726 :     - Make constness 'c instead of rw wherever possible. This eliminates
2727 :     the need for certain explicit coercions. (However, due to ML's
2728 :     value polymorphism, there will still be many cases where explicit
2729 :     coercions are necessary. Phantom types are not the whole answer
2730 :     to modeling a subtyping relationship in ML.)
2731 :    
2732 :     - ro/rw coersions for pointers added. (Avoids the detour through */&.)
2733 :    
2734 :     - "printf" test example added to src/ml-nlffi-lib/Tests. (Demonstrates
2735 :     clumsy workaround for varargs problem.)
2736 :    
2737 :     ----------------------------------------------------------------------
2738 : george 1016 Name: Lal George
2739 :     Date: 2002/01/15
2740 :     Tag: <none>
2741 :     Description:
2742 :    
2743 :     1. Since COPY instructions are no longer native to the architecture,
2744 :     a generic functor can be used to implement the expandCopies function.
2745 :    
2746 :     2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
2747 :     TEXT segment.
2748 :    
2749 :     ----------------------------------------------------------------------
2750 : blume 1011 Name: Matthias Blume
2751 : blume 1015 Date: 2002/01/15
2752 :     Tag: blume-20020115-ffiupdates
2753 :     Description:
2754 :    
2755 :     1. Fix for bug resulting in single-precision float values being returned
2756 :     incorrectly from FFI calls.
2757 :    
2758 :     2. Small modifications to C FFI API:
2759 :    
2760 :     - memory-allocation routines return straight objects (no options)
2761 :     and raise an exception in out-of-memory situations
2762 :     - unsafe extensions to cast between function pointers and pointers
2763 :     from/to ints
2764 :     - added structure C_Debug as an alternative to structure C where
2765 :     pointer-dereferencing (|*| and |*!) always check for null-pointers
2766 :     - added open_lib' to DynLinkage; open_lib' works like open_lib
2767 :     but also takes a (possibly empty) list of existing library handles
2768 :     that the current library depends on
2769 :    
2770 :     ----------------------------------------------------------------------
2771 :     Name: Matthias Blume
2772 : blume 1011 Date: 2002/01/10
2773 :     Tag: blume-20020110-newffigen
2774 :     Description:
2775 :    
2776 :     1. Updates to portable graph code.
2777 :    
2778 :     2. Major update to ml-nlffigen and ml-nlffi-lib. Things are much
2779 :     more scalable now so that even huge interfaces such as the one
2780 :     for GTK compile in finite time and space. :-)
2781 :     See src/ml-nlffigen/README for details on what's new.
2782 :    
2783 :     ----------------------------------------------------------------------
2784 : george 1003 Name: Lal George
2785 : george 1009 Date: 2001/01/09 14:31:35 EST 2002
2786 :     Tag: george-20011206-rm-native-copy
2787 :     Description:
2788 :    
2789 :     Removed the native COPY and FCOPY instructions
2790 :     from all the architectures and replaced it with the
2791 :     explicit COPY instruction from the previous commit.
2792 :    
2793 :     It is now possible to simplify many of the optimizations
2794 :     modules that manipulate copies. This has not been
2795 :     done in this change.
2796 :    
2797 :     ----------------------------------------------------------------------
2798 :     Name: Lal George
2799 : george 1003 Date: 2001/12/06 16:50:13 EST 2001
2800 :     Tag: george-20011206-mlrisc-instruction
2801 :     Description:
2802 : george 824
2803 : george 1003 Changed the representation of instructions from being fully abstract
2804 :     to being partially concrete. That is to say:
2805 :    
2806 :     from
2807 :     type instruction
2808 :    
2809 :     to
2810 :     type instr (* machine instruction *)
2811 :    
2812 :     datatype instruction =
2813 :     LIVE of {regs: C.cellset, spilled: C.cellset}
2814 :     | KILL of {regs: C.cellset, spilled: C.cellset}
2815 :     | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
2816 :     | ANNOTATION of {i: instruction, a: Annotations.annotation}
2817 :     | INSTR of instr
2818 :    
2819 :     This makes the handling of certain special instructions that appear on
2820 :     all architectures easier and uniform.
2821 :    
2822 :     LIVE and KILL say that a list of registers are live or killed at the
2823 :     program point where they appear. No spill code is generated when an
2824 :     element of the 'regs' field is spilled, but the register is moved to
2825 :     the 'spilled' (which is present, more for debugging than anything else).
2826 :    
2827 :     LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
2828 :     We used to generate:
2829 :    
2830 :     DEFFREG f1
2831 :     f1 := f2 + f3
2832 :     trapb
2833 :    
2834 :     but now generate:
2835 :    
2836 :     f1 := f2 + f3
2837 :     trapb
2838 :     LIVE {regs=[f1,f2,f3], spilled=[]}
2839 :    
2840 :     Furthermore, the DEFFREG (hack) required that all floating point instruction
2841 :     use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
2842 :     defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
2843 :     in a cleaner alpha implementation. (Hopefully, intel will not get rid of
2844 :     this architecture).
2845 :    
2846 :     COPYXXX is intended to replace the parallel COPY and FCOPY available on
2847 :     all the architectures. This will result in further simplification of the
2848 :     register allocator that must be aware of them for coalescing purposes, and
2849 :     will also simplify certain aspects of the machine description that provides
2850 :     callbacks related to parallel copies.
2851 :    
2852 :     ANNOTATION should be obvious, and now INSTR represents the honest to God
2853 :     machine instruction set!
2854 :    
2855 :     The <arch>/instructions/<arch>Instr.sml files define certain utility
2856 :     functions for making porting easier -- essentially converting upper case
2857 :     to lower case. All machine instructions (of type instr) are in upper case,
2858 :     and the lower case form generates an MLRISC instruction. For example on
2859 :     the alpha we have:
2860 :    
2861 :     datatype instr =
2862 :     LDA of {r:cell, b:cell, d:operand}
2863 :     | ...
2864 :    
2865 :     val lda : {r:cell, b:cell, d:operand} -> instruction
2866 :     ...
2867 :    
2868 :     where lda is just (INSTR o LDA), etc.
2869 :    
2870 : leunga 815 ----------------------------------------------------------------------
2871 : blume 986 Name: Matthias Blume
2872 : blume 993 Date: 2001/11/22 21:40:00 EST
2873 :     Tag: Release_110_37
2874 :     Description:
2875 :    
2876 :     Release 110.37. This time for real.
2877 :    
2878 :     ----------------------------------------------------------------------
2879 :     Name: Matthias Blume
2880 : blume 988 Date: 2001/11/21 16:35:00 EST
2881 :     Tag: blume-20011121-foot-in-mouth
2882 :     Description:
2883 :    
2884 :     Removed the "Release_110_37" tag because of a serious bug.
2885 :     This will be re-tagged once the bug is fixed.
2886 :    
2887 :     ----------------------------------------------------------------------
2888 :     Name: Matthias Blume
2889 : blume 987 Date: 2001/11/21 16:14:00 EST
2890 :     Tag: blume-20011121-forgottenfile
2891 :     Description:
2892 :    
2893 :     Forgot to add a file. (Just a .tex-file -- part of
2894 :     the CM manual source.)
2895 :    
2896 :     ----------------------------------------------------------------------
2897 :     Name: Matthias Blume
2898 : blume 986 Date: 2001/11/21 16:10:00 EST
2899 : blume 988 Tag: blume-20011121-invalid_110_37
2900 : blume 986 Description:
2901 :    
2902 : blume 988 Note: I removed the original tag "Release_110_37" from this commit
2903 :     because we found a serious bug in all non-x86 backends.
2904 :     - Matthias
2905 :    
2906 : blume 986 1. Modifications to the SML/NJ code generator and to the runtime system
2907 :     so that code object name strings are directly inserted into code
2908 :     objects at code generation time. The only business the runtime system
2909 :     has with this is now to read the name strings on occasions.
2910 :     (The encoding of the name string has also changed somewhat.)
2911 :    
2912 :     2. CM now implements a simple "set calculus" for specifying export lists.
2913 :     In particular, it is now possible to refer to the export lists of
2914 :     other libraries/groups/sources and form unions as well as differences.
2915 :     See the latest CM manual for details.
2916 :    
2917 :     3. An separate notion of "proxy" libraries has again be eliminated from
2918 :     CM's model. (Proxy libraries are now simply a special case of using
2919 :     the export list calculus.)
2920 :    
2921 :     4. Some of the existing libraries now take advantage of the new set
2922 :     calculus.
2923 :     (Notice that not all libraries have been converted because some
2924 :     of the existing .cm-files are supposed to be backward compatible
2925 :     with 110.0.x.)
2926 :    
2927 :     5. Some cleanup in stand-alone programs. (Don't use "exnMessage" -- use
2928 :     "General.exnMessage"! The former relies on a certain hook to be
2929 :     initialized, and that often does not happen in the stand-alone case.)
2930 :    
2931 :     ----------------------------------------------------------------------
2932 : george 984 Name: Lal George
2933 :     Date: 2001/11/21 13:56:18 EST
2934 :     Tag: george-2001121-pseudo-ops
2935 :     Description:
2936 :    
2937 :     Implemented a complete redesign of MLRISC pseudo-ops. Now there
2938 :     ought to never be any question of incompatabilities with
2939 :     pseudo-op syntax expected by host assemblers.
2940 :    
2941 :     For now, only modules supporting GAS syntax are implemented
2942 :     but more should follow, such as MASM, and vendor assembler
2943 :     syntax, e.g. IBM as, Sun as, etc.
2944 :    
2945 :     ----------------------------------------------------------------------
2946 : blume 977 Name: Matthias Blume
2947 :     Date: 2001/11/14 11:52:00 EST
2948 :     Tag: blume-20011114-srcname
2949 :     Description:
2950 :    
2951 :     1. Routed the name of the current source file to mlriscgen where it
2952 :     should be directly emitted into the code object. (This last part
2953 :     is yet to be done.)
2954 :    
2955 :     2. Some cleanup of the pgraph code to make it match the proposal that
2956 :     I put out the other day. (The proposal notwithstanding, things are
2957 :     still in flux here.)
2958 :    
2959 :     ----------------------------------------------------------------------
2960 : george 976 Name: Lal George
2961 :     Date: 2001/11/14 09:44:04 EST
2962 :     Tag:
2963 :     Description:
2964 :    
2965 :     Fix for a backpatching bug reported by Allen.
2966 :    
2967 :     Because the boundary between short and long span-dependent
2968 :     instructions is +/- 128, there are an astounding number of
2969 :     span-dependent instructions whose size is over estimated.
2970 :    
2971 :     Allen came up with the idea of letting the size of span
2972 :     dependent instructions be non-monotonic, for a maxIter
2973 :     number of times, after which the size must be monotonically
2974 :     increasing.
2975 :    
2976 :     This table shows the number of span-dependent instructions
2977 :     whose size was over-estimated as a function of maxIter, for the
2978 :     file Parse/parse/ml.grm.sml:
2979 :    
2980 :     maxIter # of instructions:
2981 :     10 687
2982 :     20 438
2983 :     30 198
2984 :     40 0
2985 :    
2986 :     In compiling the compiler, there is no significant difference in
2987 :     compilation speed between maxIter=10 and maxIter=40. Actually,
2988 :     my measurements showed that maxIter=40 was a tad faster than
2989 :     maxIter=10! Also 96% of the files in the compiler reach a fix
2990 :     point within 13 iterations, so fixing maxIter at 40, while high,
2991 :     is okay.
2992 :    
2993 :     ----------------------------------------------------------------------
2994 : blume 975 Name: Matthias Blume
2995 :     Date: 2001/10/31 15:25:00 EST
2996 :     Tag: blume-20011031-pgraph
2997 :     Description:
2998 :    
2999 :     CKIT:
3000 :     * Changed the "Function" constructor of type Ast.ctype to carry optional
3001 :     argument identifiers.
3002 :     * Changed the return type of TypeUtil.getFunction accordingly.
3003 :     * Type equality ignores the argument names.
3004 :     * TypeUtil.composite tries to preserve argument names but gives up quickly
3005 :     if there is a mismatch.
3006 :    
3007 :     installation script:
3008 :     * attempts to use "curl" if available (unless "wget" is available as well)
3009 :    
3010 :     CM:
3011 :     * has an experimental implementation of "portable graphs" which I will
3012 :     soon propose as an implementation-independent library format
3013 :     * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
3014 :    
3015 :     NLFFI-LIB:
3016 :     * some cleanup (all cosmetic)
3017 :    
3018 :     NLFFIGEN:
3019 :     * temporarily disabled the mechanism that suppresses ML output for
3020 :     C definitions whose identifiers start with an underscore character
3021 :     * generate val bindings for enum constants
3022 :     * user can request that only one style (light or heavy) is being used;
3023 :     default is to use both (command-line arguments: -heavy and -light)
3024 :     * fixed bug in handling of function types involving incomplete pointers
3025 :     * generate ML entry points that take record arguments (i.e., using
3026 :     named arguments) for C functions that have a prototype with named
3027 :     arguments
3028 :     (see changes to CKIT)
3029 :    
3030 :     ----------------------------------------------------------------------
3031 : leunga 972 Name: Allen Leung
3032 :     Date: 2001/10/27 20:34:00 EDT
3033 :     Tag: leunga-20011027-x86-fast-fp-call
3034 :     Description:
3035 :    
3036 :     Fixed the bug described in blume-20010920-slowfp.
3037 :    
3038 :     The fix involves
3039 :     1. generating FCOPYs in FSTP in ia32-svid
3040 :     2. marking a CALL with the appropriate annotation
3041 :    
3042 :     ----------------------------------------------------------------------
3043 : blume 961 Name: Matthias Blume
3044 :     Date: 2001/10/16 11:32:00 EDT
3045 :     Tag: blume-20011016-netbsd
3046 :     Description:
3047 :    
3048 :     Underscore patch from Chris Richards (fixing problem with compiling
3049 :     runtime system under recent NetBSD).
3050 :    
3051 :     ----------------------------------------------------------------------
3052 : george 959 Name: Allen Leung
3053 :     Date: 2001/10/12 17:18:32 EDT 2001
3054 :     Tag: leung-20011012-x86-printflowgraph
3055 :     Description:
3056 :    
3057 :     X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
3058 :    
3059 :     ----------------------------------------------------------------------
3060 : george 952 Name: Lal George
3061 : george 958 Date: 2001/10/11 23:51:34 EDT
3062 :     Tag: george-20011011-too-many-instrs
3063 :     Description:
3064 :    
3065 :     The representation of a program point never expected to see more
3066 :     than 65536 instructions in a basic block!
3067 :    
3068 :     ----------------------------------------------------------------------
3069 :     Name: Lal George
3070 : george 952 Date: 2001/10/09 09:41:37 EDT
3071 :     Tag: george-20011008-mlrisc-labels
3072 :     Description:
3073 :    
3074 :     Changed the machine description files to support printing of
3075 :     local and global labels in assembly code, based on host assembler
3076 :     conventions.
3077 :    
3078 :     ----------------------------------------------------------------------
3079 : blume 916 Name: Matthias Blume
3080 : blume 939 Date: 2001/09/25 15:25:00 EDT
3081 :     Tag: blume-20010925-exninfo
3082 :     Description:
3083 :    
3084 :     I provided a non-hook implementation of exnName (at the toplevel) and
3085 :     made the "dummy" implementation of exnMessage (at the toplevel) more
3086 :     useful: if nothing gets "hooked in", then at least you are going to
3087 :     see the exception name and a message indicating why you don't see more.
3088 :    
3089 :     [For the time being, programs that need exnMessage and want to use
3090 :     ml-build should either use General.exnMessage (strongly recommended) or
3091 :     refer to structure General at some other point so that CM sees a
3092 :     static dependency.]
3093 :    
3094 :     [Similar remarks go for "print" and "use": If you want to use their
3095 :     functionality in stand-alone programs generated by ml-build, then use
3096 :     TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
3097 :    
3098 :     ----------------------------------------------------------------------
3099 :     Name: Matthias Blume
3100 : blume 938 Date: 2001/09/20 17:28:00 EDT
3101 :     Tag: blume-20010920-slowfp
3102 :     Description:
3103 :    
3104 :     Allen says that x86-fast-fp is not safe yet, so I turned it off again...
3105 :    
3106 :     ----------------------------------------------------------------------
3107 :     Name: Matthias Blume
3108 : blume 937 Date: 2001/09/20 17:20:00 EDT
3109 :     Tag: blume-20010920-canonicalpaths
3110 :     Description:
3111 :    
3112 :     0. Updated the BOOT file (something that I forgot to do earlier).
3113 :    
3114 :     1. Small internal change to CM so that it avoids "/../" in filenames
3115 :     as much as possible (but only where it is safe).
3116 :    
3117 :     2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
3118 :     that arguments that contain delimiters are passed through correctly.
3119 :     This change also means that all "special" arguments of the form
3120 :     @SMLxxx... must come first.
3121 :    
3122 :     3. Changed install script to put relative anchor names for tool commands
3123 :     into pathconfig.
3124 :    
3125 :     ----------------------------------------------------------------------
3126 :     Name: Matthias Blume
3127 : blume 932 Date: 2001/09/18 15:35:00 EDT
3128 :     Tag: blume-20010918-readme11036
3129 :     Description:
3130 :    
3131 :     Added README files.
3132 :    
3133 :     ----------------------------------------------------------------------
3134 :     Name: Matthias Blume
3135 : blume 929 Date: 2001/09/18 11:45:00 EDT
3136 :     Tag: Release_110_36 (retag)
3137 :     Description:
3138 :    
3139 :     Fixed mistake in config/preloads. Retagged as 110.36.
3140 :    
3141 :     ----------------------------------------------------------------------
3142 :     Name: Matthias Blume
3143 : blume 928 Date: 2001/09/18 09:40:00 EDT
3144 : blume 929 Tag: Release_110_36_orig (tag changed)
3145 : blume 928 Description:
3146 :    
3147 :     New version (110.36). New bootfiles.
3148 :    
3149 :     ----------------------------------------------------------------------
3150 :     Name: Matthias Blume
3151 : blume 927 Date: 2001/09/14 16:15:00 EDT
3152 :     Tag: blume-20010914-x86fastfp
3153 :     Description:
3154 :    
3155 :     John committed some changes that Allen made, in particular a (hopefully)
3156 :     correctly working version of the x86-fp module.
3157 :    
3158 :     I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
3159 :     flag to "true". Everything seems to compile to a fixpoint ok, and
3160 :     "mandelbrot" speeds up by about 15%.
3161 :    
3162 :     ----------------------------------------------------------------------
3163 :     Name: Matthias Blume
3164 : blume 923 Date: 2001/09/13 11:20:00 EDT
3165 :     Tag: blume-20010913-minimal
3166 :     Description:
3167 :    
3168 :     1. Stefan Monnier's patch to fix a miscompilation problem that
3169 :     was brought to light by John Reppy's work on Moby.
3170 :    
3171 :     2. Implemented a minimal "structure Compiler" that contains just
3172 :     "version" and "architecture". The minimal version will be
3173 :     available when the full version is not. This is for backward-
3174 :     compatibility with code that wants to test Compiler.version.
3175 :    
3176 :     ----------------------------------------------------------------------
3177 :     Name: Matthias Blume
3178 : blume 920 Date: 2001/08/28 14:03:00 EDT
3179 :     Tag: blume-20010828-ml-lex
3180 :     Description:
3181 :    
3182 :     Fix for bug 1581, received from Neophytos Michael.
3183 :    
3184 :     ----------------------------------------------------------------------
3185 :     Name: Matthias Blume
3186 : blume 918 Date: 2001/08/27 11:20:00 EDT
3187 :     Tag: blume-20010827-readme11035
3188 :     Description:
3189 :    
3190 :     Fleshed out the README file for 110.35.
3191 :    
3192 :     ----------------------------------------------------------------------
3193 :     Name: Matthias Blume
3194 : blume 916 Date: 2001/08/24 17:10:00 EDT
3195 :     Tag: Release_110_35
3196 :     Description:
3197 :    
3198 :     New version number (110.35). New bootfiles.
3199 :    
3200 :     ----------------------------------------------------------------------
3201 : george 915 Name: Lal George
3202 : george 909 Date: 2001/08/24 13:47:18 EDT 2001
3203 :     Tag: george-20010824-MLRISC-graphs
3204 :     Description:
3205 :    
3206 :     removed clusters from MLRISC completely and replaced with graphs.
3207 :    
3208 :     ----------------------------------------------------------------------
3209 :     Name: Matthias Blume
3210 : blume 905 Date: 2001/08/23 17:50:00 EDT
3211 :     Tag: blume-20010823-toplevel
3212 :     Description:
3213 :    
3214 :     - some reorganization of the code that implements various kinds of
3215 :     environments in the compiler (static, dynamic, symbolic, combined)
3216 :     - re-implemented the EnvRef module so that evalStream works properly
3217 :     (if the stream contains references to "use", "CM.make", etc.)
3218 :     - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
3219 :    
3220 :     ----------------------------------------------------------------------
3221 :     Name: Matthias Blume
3222 : blume 904 Date: 2001/08/20 15:50 EDT
3223 :     Tag: blume20010820-slipup
3224 :     Description:
3225 :    
3226 :     I forgot to commit a few files. Here they are...
3227 :    
3228 :     ----------------------------------------------------------------------
3229 :     Name: Matthias Blume
3230 : blume 903 Date: 2001/08/20 15:35:00 EDT
3231 :     Tag: blume-20010820-debugprof
3232 :     Description:
3233 :    
3234 :     !!!! NEW BOOTFILES !!!!
3235 :    
3236 :     This is another round of reorganizing the compiler sources. This
3237 :     time the main goal was to factor out all the "instrumentation"
3238 :     passes (for profiling and backtracing) into their own library.
3239 :     The difficulty was to do it in such a way that it does not depend
3240 :     on elaborate.cm but only on elabdata.cm.
3241 :    
3242 :     Therefore there have been further changes to both elaborate.cm and
3243 :     elabdata.cm -- more "generic" things have been moved from the former
3244 :     to the latter. As a result, I was forced to split the assignment
3245 :     of numbers indicating "primtyc"s into two portions: SML-generic and
3246 :     SML/NJ-specific. Since it would have been awkward to maintain,
3247 :     I bit the bullet and actually _changed_ the mapping between these
3248 :     numbers and primtycs. The bottom line of this is that you need
3249 :     a new set of bin- and bootfiles.
3250 :    
3251 :     I have built new bootfiles for all architectures, so doing a fresh
3252 :     checkout and config/install.sh should be all you need.
3253 :    
3254 :     The newly created library's name is
3255 :    
3256 :     $smlnj/viscomp/debugprof.cm
3257 :    
3258 :     and its sources live under
3259 :    
3260 :     src/compiler/DebugProf
3261 :    
3262 :     ----------------------------------------------------------------------
3263 :     Name: Matthias Blume
3264 : blume 902 Date: 2001/08/15 17:15:00 EDT
3265 :     Tag: blume-20010815-compreorg
3266 :     Description:
3267 :    
3268 :     This is a first cut at reorganizing the CM libraries that make up the
3269 :     core of the compiler. The idea is to separate out pieces that could
3270 :     be used independently by tools, e.g., the parser, the typechecker, etc.
3271 :    
3272 :     The current status is a step in this direction, but it is not quite
3273 :     satisfactory yet. Expect more changes in the future.
3274 :    
3275 :     Here is the current (new) organization...
3276 :    
3277 :     What used to be $smlnj/viscomp/core.cm is now divided into
3278 :     six CM libraries:
3279 :    
3280 :     $smlnj/viscomp/basics.cm
3281 :     /parser.cm
3282 :     /elabdata.cm
3283 :     /elaborate.cm
3284 :     /execute.cm
3285 :     /core.cm
3286 :    
3287 :     The CM files for these libraries live under src/system/smlnj/viscomp.
3288 :     All these libraries are proxy libraries that contain precisely
3289 :     one CM library component. Here are the locations of the components
3290 :     (all within the src/compiler tree):
3291 :    
3292 :     Basics/basics.cm
3293 :     Parse/parser.cm
3294 :     ElabData/elabdata.cm
3295 :     Elaborator/elaborate.cm
3296 :     Execution/execute.cm
3297 :     core.cm
3298 :    
3299 :     [This organization is the same that has been used already
3300 :     for a while for the architecture-specific parts of the visible
3301 :     compiler and for the old version of core.cm.]
3302 :    
3303 :     As you will notice, many source files have been moved from their
3304 :     respective original locations to a new home in one of the above
3305 :     subtrees.
3306 :    
3307 :     The division of labor between the new libraries is the following:
3308 :    
3309 :     basics.cm:
3310 :     - Simple, basic definitions that pertain to many (or all) of
3311 :     the other libraries.
3312 :     parser.cm:
3313 :     - The SML parser, producing output of type Ast.dec.
3314 :     - The type family for Ast is also defined and exported here.
3315 :     elabdata.cm:
3316 :     - The datatypes that describe input and output of the elaborator.
3317 :     This includes types, absyn, and static environments.
3318 :     elaborator.cm:
3319 :     - The SML/NJ type checker and elaborator.
3320 :     This maps an Ast.dec (with a given static environment) to
3321 :     an Absyn.dec (with a new static environment).
3322 :     - This libraries implements certain modules that used to be
3323 :     structures as functors (to remove dependencies on FLINT).
3324 :     execute.cm:
3325 :     - Everything having to do with executing binary code objects.
3326 :     - Dynamic environments.
3327 :     core.cm:
3328 :     - SML/NJ-specific instantiations of the elaborator and MLRISC.
3329 :     - Top-level modules.
3330 :     - FLINT (this should eventually become its own library)
3331 :    
3332 :     Notes:
3333 :    
3334 :     I am not 100% happy with the way I separated the elaborator (and its
3335 :     data structures) from FLINT. Two instances of the same problem:
3336 :    
3337 :     1. Data structures contain certain fields that carry FLINT-specific
3338 :     information. I hacked around this using exn and the property list
3339 :     module from smlnj-lib. But the fact that there are middle-end
3340 :     specific fields around at all is a bit annoying.
3341 :    
3342 :     2. The elaborator calculates certain FLINT-related information. I tried
3343 :     to make this as abstract as I could using functorization, but, again,
3344 :     the fact that the elaborator has to perform calculations on behalf
3345 :     of the middle-end at all is not nice.
3346 :    
3347 :     3. Having to used exn and property lists is unfortunate because it
3348 :     weakens type checking. The other alternative (parameterizing
3349 :     nearly *everything*) is not appealing, though.
3350 :    
3351 :     I removed the "rebinding =" warning hack because due to the new organization
3352 :     it was awkward to maintain it. As a result, the compiler now issues some of
3353 :     these warnings when compiling init.cmi during bootstrap compilation. On
3354 :     the plus side, you also get a warning when you do, for example:
3355 :     val op = = Int32.+
3356 :     which was not the case up to now.
3357 :    
3358 :     I placed "assign" and "deref" into the _Core structure so that the
3359 :     code that deals with the "lazy" keyword can find them there. This
3360 :     removes the need for having access to the primitive environment
3361 :     during elaboration.
3362 :    
3363 :     ----------------------------------------------------------------------
3364 :     Name: Matthias Blume
3365 : blume 898 Date: 2001/08/13
3366 :     Tag: blume-20010813-closures
3367 :     Description:
3368 :    
3369 :     This fix was sent to us by Zhong Shao. It is supposed to improve the
3370 :     performance of certain loops by avoiding needless closure allocation.
3371 :    
3372 :     ----------------------------------------------------------------------
3373 : george 890 Name: Lal George
3374 : george 896 Date: 2001/07/31 10:03:23 EDT 2001
3375 :     Tag: george-20010731-x86-fmalloc
3376 :     Description: Fixed bug in x86 calls
3377 :    
3378 :     There was a bug where call instructions would mysteriously
3379 :     vanish. The call instruction had to be one that returned
3380 :     a floating point value.
3381 :    
3382 :     ----------------------------------------------------------------------
3383 :     Name: Lal George
3384 : george 890 Date: 2001/07/19 16:36:29 EDT 2001
3385 :     Tag: george-20010719-simple-cells
3386 :     Description:
3387 :    
3388 :     I have dramatically simplified the interface for CELLS in MLRISC.
3389 :    
3390 :     In summary, the cells interface is broken up into three parts:
3391 :    
3392 :     1. CellsBasis : CELLS_BASIS
3393 :    
3394 :     CellsBasis is a top level structure and common for all
3395 :     architectures. it contains the definitions of basic datatypes
3396 :     and utility functions over these types.
3397 :    
3398 :     2. functor Cells() : CELLS
3399 :    
3400 :     Cells generates an interface for CELLS that incorporates the
3401 :     specific resources on the target architecture, such as the
3402 :     presence of special register classes, their number and size,
3403 :     and various useful substructures.
3404 :    
3405 :     3. <ARCH>CELLS
3406 :    
3407 :     e.g. SparcCells: SPARCCELLS
3408 :    
3409 :     <ARCH>CELLS usually contains additional bindings for special
3410 :     registers on the architecture, such as:
3411 :    
3412 :     val r0 : cell (* register zero *)
3413 :     val y : cell (* Y register *)
3414 :     val psr : cell (* processor status register *)
3415 :     ...
3416 :    
3417 :     The structure returned by applying the Cells functor is opened
3418 :     in this interface.
3419 :    
3420 :     The main implication of all this is that the datatypes for cells is
3421 :     split between CellsBasis and CELLS -- a fairly simple change for user
3422 :     code.
3423 :    
3424 :     In the old scheme the CELLS interface had a definitional binding of
3425 :     the form:
3426 :    
3427 :     signature CELLS = sig
3428 :    
3429 :     structure CellsBasis = CellsBasis
3430 :    
3431 :     ...
3432 :    
3433 :     end
3434 :    
3435 :     With all the sharing constraints that goes on in MLRISC, this old
3436 :     design quickly leads to errors such as:
3437 :    
3438 :     "structure definition spec inside of sharing ... "
3439 :    
3440 :    
3441 :     and appears to require an unacceptable amount of sharing and where
3442 :     constraint hackery.
3443 :    
3444 :     I think this error message (the interaction of definitional specs and
3445 :     sharing) requires more explanation on our web page.
3446 :    
3447 :     ----------------------------------------------------------------------
3448 : blume 826 Name: Matthias Blume
3449 : blume 879 Date: 2001/07/19 15:00:00 EDT
3450 :     Tag: blume-20010719-libreorg
3451 :     Description:
3452 :    
3453 :     This update puts together a fairly extensive but straightforward change
3454 :     to the way the libraries that implement the interactive system are
3455 :     organized:
3456 :    
3457 :     The biggest change is the elimination of structure Compiler. As a
3458 :     replacement for this structure, there is now a CM library
3459 :     (known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
3460 :     that exports all the substructures of the original structure Compiler
3461 :     directly. So instead of saying Compiler.Foo.bar one now simply
3462 :     says Foo.bar. (The CM libraries actually export a collection of
3463 :     structures that is richer than the collection of substructures of
3464 :     structure Compiler.)
3465 :    
3466 :     To make the transition smooth, there is a separate library called
3467 :     $smlnj/compiler/compiler.cm which puts together and exports the
3468 :     original structure Compiler (or at least something very close to it).
3469 :    
3470 :     There are five members of the original structure Compiler
3471 :     that are not exported directly but which instead became members
3472 :     of a new structure Backend (described by signature BACKEND). These are:
3473 :     structure Profile (: PROFILE), structure Compile (: COMPILE), structure
3474 :     Interact (: INTERACT), structure Machine (: MACHINE), and val
3475 :     architecture (: string).
3476 :    
3477 :     Structure Compiler.Version has become structure CompilerVersion.
3478 :    
3479 :     Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
3480 :     by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
3481 :     or x86, respectively.
3482 :     Each of these exports the same frontend structures that
3483 :     $smlnj/compiler.cm exports. But they do not have a structure Backend
3484 :     and instead export some structure <Arch>Backend where <Arch> is Alpha32,
3485 :     Hppa, PPC, Sparc, or X86, respectively.
3486 :    
3487 :     Library $smlnj/compiler/all.cm exports the union of the exports of
3488 :     $smlnj/compiler/<arch>.cm
3489 :    
3490 :     There are no structures <Arch>Compiler anymore, use
3491 :     $smlnj/compiler/<arch>.cm instead.
3492 :    
3493 :     Library host-compiler-0.cm is gone. Instead, the internal library
3494 :     that instantiates CM is now called cm0.cm. Selection of the host
3495 :     compiler (backend) is no longer done here but. (Responsibility for it
3496 :     now lies with $smlnj/compiler/current.cm. This seems to be more
3497 :     logical.)
3498 :    
3499 :     Many individual files have been moved or renamed. Some files have
3500 :     been split into multiple files, and some "dead" files have been deleted.
3501 :    
3502 :     Aside from these changes to library organization, there are also changes
3503 :     to the way the code itself is organized:
3504 :    
3505 :     Structure Binfile has been re-implemented in such a way that it no
3506 :     longer needs any knowledge of the compiler. It exclusively deals
3507 :     with the details of binfile layout. It no longer invokes the
3508 :     compiler (for the purpose of creating new prospective binfile
3509 :     content), and it no longer has any knowledge of how to interpret
3510 :     pickles.
3511 :    
3512 :     Structure Compile (: COMPILE) has been stripped down to the bare
3513 :     essentials of compilation. It no longer deals with linking/execution.
3514 :     The interface has been cleaned up considerably.
3515 :    
3516 :     Utility routines for dealing with linking and execution have been
3517 :     moved into their own substructures.
3518 :    
3519 :     (The ultimate goal of these changes is to provide a light-weight
3520 :     binfile loader/linker (at least for, e.g., stable libraries) that
3521 :     does not require CM or the compiler to be present.)
3522 :    
3523 :     CM documentation has been updated to reflect the changes to library
3524 :     organization.
3525 :    
3526 :     ----------------------------------------------------------------------
3527 :     Name: Matthias Blume
3528 : blume 875 Date: 2001/07/10 17:30:00 EDT
3529 :     Tag: Release_110_34
3530 :     Description:
3531 :    
3532 : blume 876 Minor tweak to 110.34 (re-tagged):
3533 :    
3534 :     - README.html file added to CVS repository
3535 :     - runtime compiles properly under FreeBSD 3.X and 4.X
3536 :    
3537 :     ----------------------------------------------------------------------
3538 :     Name: Matthias Blume
3539 :     Date: 2001/07/10 17:30:00 EDT
3540 :     Tag: Release_110_34
3541 :     Description:
3542 :    
3543 : blume 875 New version number (110.34). New bootfiles.
3544 :    
3545 :     ----------------------------------------------------------------------
3546 :     Name: Matthias Blume
3547 : blume 874 Date: 2001/07/09 16:00:00 EDT
3548 :     Tag: blume-20010709-more-varargs
3549 :     Description:
3550 :    
3551 :     I changed the handling of varargs in ml-nlffigen again:
3552 :     The ellipsis ... will now simply be ignored (with an accompanying warning).
3553 :    
3554 :     The immediate effect is that you can actually call a varargs function
3555 :     from ML -- but you can't actually supply any arguments beyond the ones
3556 :     specified explicitly. (For example, you can call printf with its format
3557 :     string, but you cannot pass additional arguments.)
3558 :    
3559 :     This behavior is only marginally more useful than the one before, but
3560 :     it has the advantage that a function or, more importantly, a function
3561 :     type never gets dropped on the floor, thus avoiding follow-up problems with
3562 :     other types that refer to the offending one.
3563 :    
3564 :     ----------------------------------------------------------------------
3565 :     Name: Matthias Blume
3566 : blume 873 Date: 2001/07/09 11:25:00 EDT
3567 :     Tag: blume-20010709-varargs
3568 :     Description:
3569 :    
3570 :     1. ckit-lib.cm now exports structure Error
3571 :     2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
3572 :     with a warning accompanied by a source location. Moreover, it
3573 :     merely skips the offending function or type and proceeds with the
3574 :     rest of its work.u As a result, one can safely feed C code containing
3575 :     "..." to ml-nlffigen.
3576 :     3. There are some internal improvements to CM, providing slightly
3577 :     more general string substitutions in the tools subsystem.
3578 :    
3579 :     ----------------------------------------------------------------------
3580 :     Name: Matthias Blume
3581 : blume 854 Date: 2001/06/27 15:10:00 EDT
3582 :     Tag: blume-20010627-concur
3583 :     Description:
3584 :    
3585 :     Fixed a small bug in CM's handling of parallel compilation.
3586 :     (You could observe the bug by Control-C-interrupting an ordinary
3587 :     CMB.make or CM.stabilize and then attaching some compile servers.
3588 :     The result was that all of a sudden the previously interrupted
3589 :     compilation would continue on its own. This was because of
3590 :     an over-optimization: CM did not bother to clean out certain queues
3591 :     when no servers were attached "anyway", resulting in the contents
3592 :     of these queues to grab control when new servers did get attached.)
3593 :    
3594 :     There is also another minor update to the CM manual.
3595 :    
3596 :     ----------------------------------------------------------------------
3597 :     Name: Matthias Blume
3598 : blume 853 Date: 2001/06/26 16:15:00 EDT
3599 :     Tag: blume-20010626-cmdoc
3600 :     Description:
3601 :    
3602 :     Minor typo fixed in CM manual (syntax diagram for libraries).
3603 :    
3604 :     ----------------------------------------------------------------------
3605 :     Name: Matthias Blume
3606 : blume 852 Date: 2001/06/25 22:55:00 EDT
3607 :     Tag: blume-20010625-x86pc
3608 :     Description:
3609 :    
3610 :     Fixed a nasty bug in the X86 assembly code that caused signal
3611 :     handlers to fail (crash) randomly.
3612 :    
3613 :     ----------------------------------------------------------------------
3614 :     Name: Matthias Blume
3615 : blume 846 Date: 2001/06/25 12:05:00 EDT
3616 :     Tag: blume-20010625-nlffigen
3617 :     Description:
3618 :    
3619 :     This update fixes a number of minor bugs in ml-nlffigen as reported by
3620 :     Nick Carter <nbc@andrew.cmu.edu>.
3621 :    
3622 :     1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
3623 :     2. Default names for generated files are now derived from the name of
3624 :     the C file *without its directory*. In particular, this causes generated
3625 :     files to be placed locally even if the C file is in some system directory.
3626 :     3. Default names for generated signatures and structures are also derived
3627 :     from the C file name without its directory. This avoids silly things
3628 :     like "structure GL/GL".
3629 :     (Other silly names are still possible because ml-nlffigen does not do
3630 : blume 847 a thorough check of whether generated names are legal ML identifiers.
3631 :     When in doubt, use command line arguments to force particular names.)
3632 : blume 846
3633 :     ----------------------------------------------------------------------
3634 :     Name: Matthias Blume
3635 : blume 845 Date: 2001/06/21 12:25:00 EDT
3636 :     Tag: blume-20010621-eXene
3637 :     Description:
3638 :    
3639 :     eXene now compiles and (sort of) works again.
3640 :    
3641 :     The library name (for version > 110.33) is $/eXene.cm.
3642 :    
3643 :     I also added an new example in src/eXene/examples/nbody. See the
3644 :     README file there for details.
3645 :    
3646 :     ----------------------------------------------------------------------
3647 :     Name: Matthias Blume
3648 : blume 844 Date: 2001/06/20 16:40:00 EDT
3649 :     Tag: blume-20010620-cml
3650 :     Description:
3651 :    
3652 :     CML now compiles and works again.
3653 :    
3654 :     Libraries (for version > 110.33):
3655 :    
3656 :     $cml/cml.cm Main CML library.
3657 :     $cml/basis.cm CML's version of $/basis.cm.
3658 :     $cml/cml-internal.cm Internal helper library.
3659 :     $cml/core-cml.cm Internal helper library.
3660 :     $cml-lib/trace-cml.cm Tracing facility.
3661 :     $cml-lib/smlnj-lib.cm CML's version of $/smlnj-lib.cm
3662 :    
3663 :     The installer (config/install.sh) has been taught how to properly
3664 :     install this stuff.
3665 :    
3666 :     ----------------------------------------------------------------------
3667 :     Name: Matthias Blume
3668 : blume 843 Date: 2001/06/19 17:55:00 EDT
3669 :     Tag: blume-20010619-instantiate
3670 :     Description:
3671 :    
3672 :     This un-breaks the fix for bug 1432.
3673 :     (The bug was originally fixed in 110.9 but I broke it again some
3674 :     time after that.)
3675 :    
3676 :     ----------------------------------------------------------------------
3677 :     Name: Matthias Blume
3678 : blume 842 Date: 2001/06/19 17:25:00 EDT
3679 :     Tag: blume-20010619-signals
3680 :     Description:
3681 :    
3682 :     This should (hopefully) fix the long-standing signal handling bug.
3683 :     (The runtime system was constructing a continuation record with an
3684 :     incorrect descriptor which would cause the GC to drop data on the floor...)
3685 :    
3686 :     ----------------------------------------------------------------------
3687 :     Name: Matthias Blume
3688 : blume 840 Date: 2001/06/15 15:05:00 EDT
3689 : blume 841 Tag: blume-20010615-moresparc
3690 :     Description:
3691 :    
3692 :     Here is a short late-hour update related to Sparc c-calls:
3693 :    
3694 :     -- made handling of double-word arguments a bit smarter
3695 :    
3696 :     -- instruction selection phase tries to collapse certain clumsily
3697 :     constructed ML-Trees; typical example:
3698 :    
3699 :     ADD(ty,ADD(_,e,LI d1),LI d2) -> ADD(ty,e,LI(d1+d2))
3700 :    
3701 :     This currently has no further impact on SML/NJ since mlriscGen does
3702 :     not seem to generate such patterns in the first place, and c-calls
3703 :     (which did generate them in the beginning) has meanwhile been fixed
3704 :     so as to avoid them as well.
3705 :    
3706 :     ----------------------------------------------------------------------
3707 :     Name: Matthias Blume
3708 :     Date: 2001/06/15 15:05:00 EDT
3709 : blume 840 Tag: blume-20010615-sparc
3710 :     Description:
3711 :    
3712 :     The purpose of this update is to provide an implementation of NLFFI
3713 :     on Sparc machines.
3714 :    
3715 :     Here are the changes in detail:
3716 :    
3717 :     * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
3718 :     the Sparc implementation of the c-calls API.
3719 :     * The Sparc backend of SML/NJ has been modified to uniformely use %fp
3720 :     for accessing the ML frame. Thus, we have a real frame pointer and
3721 :     can freely modify %sp without need for an omit-frame-ptr phase.
3722 :     The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
3723 :     this case.
3724 :     * ml-nlffigen has been taught to produce code for different architectures
3725 :     and calling conventions.
3726 :     * In a way similar to what was done in the x86 case, the Sparc
3727 :     backend uses its own specific extension to mltree. (For example,
3728 :     it needs to be able to generate UNIMP instructions which are part
3729 :     of the calling convention.)
3730 :     * ml-nlffi-lib was reorganized to make it more modular (in particular,
3731 :     to make it easier to plug in new machine- and os-dependent parts).
3732 :    
3733 :     There are some other fairly unrelated bug fixes and cleanups as well:
3734 :    
3735 :     * I further hacked the .cm files for MLRISC tools (like MDLGen) so
3736 :     that they properly share their libraries with existing SML/NJ libraries.
3737 :     * I fixed a minor cosmetic bug in CM, supressing certain spurious
3738 :     follow-up error messages.
3739 :     * Updates to CM/CMB documentation.
3740 :    
3741 :     TODO items:
3742 :    
3743 :     * MLRISC should use a different register as its asmTemp on the Sparc.
3744 :     (The current %o2 is a really bad choice because it is part of the
3745 :     calling conventions, so things might interfere in unexpected ways.)
3746 :    
3747 :     ----------------------------------------------------------------------
3748 :     Name: Matthias Blume
3749 : blume 839 Date: 2001/06/07
3750 :     Tag: blume-20010607-calls
3751 :     Description:
3752 :    
3753 :     A number of internal changes related to C calls and calling conventions:
3754 :    
3755 :     1. ML-Tree CALL statements now carry a "pops" field. It indicates the
3756 :     number of bytes popped implicitly (by the callee). In most cases
3757 :     this field is 0 but on x86/win32 it is some non-zero value. This
3758 :     is information provided for the benefit of the "omit-frameptr" pass.
3759 :     2. The CALL instruction on the x86 carries a similar "pops" field.
3760 :     The instruction selection phase copies its value from the ML-Tree
3761 :     CALL statement.
3762 :     3. On all other architectures, the instruction selection phase checks
3763 :     whether "pops=0" and complains if not.
3764 :     4. The c-calls implementation for x86 now accepts two calling conventions:
3765 :     "ccall" and "stdcall". When "ccall" is selected, the caller cleans
3766 :     up after the call and pops is set to 0. For "stdcall", the caller
3767 :     does nothing, leaving the cleanup to the callee; pops is set to
3768 :     the number of bytes that were pushed onto the stack.
3769 :     5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
3770 :     distinguish between "ccall" and "stdcall".
3771 :     6. The UNIMP instruction has been added to the supported Sparc instruction
3772 :     set. (This is needed for implementing the official C calling convention
3773 :     on this architecture.)
3774 :     7. I fixed some of the .cm files under src/MLRISC/Tools to make them
3775 :     work with the latest CM.
3776 :    
3777 :     ----------------------------------------------------------------------
3778 :     Name: Matthias Blume
3779 : blume 838 Date: 2001/06/05 15:10:00 EDT
3780 :     Tag: blume-20010605-cm-index
3781 :     Description:
3782 :    
3783 :     0. The "lambdasplit" parameter for class "sml" in CM has been documented.
3784 :    
3785 :     1. CM can now generate "index files". These are human-readable files
3786 :     that list on a per-.cm-file basis each toplevel symbol defined or
3787 :     imported. The location of the index file for
3788 :     <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
3789 :     To enable index-file generation, set CM.Control.generate_index to true
3790 :     or export an environment-symbol: export CM_GENERATE_INDEX=true.
3791 :    
3792 :     The CM manual has been updated accordingly.
3793 :    
3794 :     2. I made some slight modifications to the c-calls API in MLRISC.
3795 :    
3796 :     a) There is now a callback to support saving/restoring of
3797 :     dedicated but caller-save registers around the actual call
3798 :     instruction.
3799 :     b) One can optionally specify a comment-annotation for the
3800 :     call instruction.
3801 :    
3802 :     3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
3803 :     (For example, the comment annotation shows the C prototype of
3804 :     the function being called.)
3805 :    
3806 :     ----------------------------------------------------------------------
3807 :     Name: Matthias Blume
3808 : blume 837 Date: 2001/06/01 13:30:00 EDT
3809 :     Tag: blume-20010601-nlffi-cleanup
3810 :     Description:
3811 :    
3812 :     This is mostly a cleanup of MLFFI stuff:
3813 :    
3814 :     - some signature files have been put into a more exposed place
3815 :     - the ugly 'f type parameter is gone (simplifies types tremendously!)
3816 :     - ml-nlffigen changed accordingly
3817 :     - tutorial updated
3818 :    
3819 :     Other changes:
3820 :    
3821 :     - author's affiliation in CM manual(s) updated
3822 :     - some more recognized keywords added to Allen's sml.sty
3823 :    
3824 :     ----------------------------------------------------------------------
3825 :     Name: Matthias Blume
3826 : blume 836 Date: 2001/05/25 15:30:00 EDT
3827 :     Tag: blume-20010525-iptr
3828 :     Description:
3829 :    
3830 :     - put the official 110.33-README (as it appears on the ftp server) under
3831 :     CVS
3832 :     - fixed a small bug related to incomplete pointer types in
3833 :     ml-nlffigen
3834 :     - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
3835 :     (it does not need the 'f type parameter)
3836 :    
3837 :     ----------------------------------------------------------------------
3838 :     Name: Matthias Blume
3839 : blume 834 Date: 2001/05/23 14:30:00 EDT
3840 :     Tag: Release_110_33
3841 :     Description:
3842 :    
3843 :     New version number (110.33). New bootfiles.
3844 :    
3845 :     ----------------------------------------------------------------------
3846 :     Name: Matthias Blume
3847 : blume 833 Date: 2001/05/22 18:06:00 EDT
3848 :     Tag: blume-20010522-targets
3849 :     Description:
3850 :    
3851 :     Made install.sh use file config/targets.customized if it exists, falling
3852 :     back to config/targets if it doesn't. This way one can have a customized
3853 :     version of the targets file without touching the "real thing", thus
3854 :     eliminating the constant fear of accidentally checking something bogus
3855 :     back into the CVS repository... (File config/targets.customized must
3856 :     not be added to the repository!)
3857 :    
3858 :     ----------------------------------------------------------------------
3859 :     Name: Matthias Blume
3860 : blume 832 Date: 2001/05/22 16:30:00 EDT
3861 :     Tag: blume-20010522-minitut
3862 :     Description:
3863 :    
3864 :     1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
3865 :     struct returns.
3866 :     2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt. This is some very
3867 :     incomplete, preliminary documentation for NLFFI.
3868 :    
3869 :     ----------------------------------------------------------------------
3870 :     Name: Matthias Blume
3871 : blume 829 Date: 2001/05/14 11:30:00 EDT
3872 :     Tag: blume-20010514-script
3873 :     Description:
3874 :    
3875 :     Some bugs in install script fixed.
3876 :    
3877 :     In addition to that I also made a slight change to the NLFFI API:
3878 :     Functors generated by ml-nlffigen now take the dynamic library as a
3879 :     straight functor argument, not as a suspended one. (The original
3880 :     functor code used to force the suspension right away anyway, so there
3881 :     was nothing gained by this complication of the interface.)
3882 :    
3883 :     ----------------------------------------------------------------------
3884 :     Name: Matthias Blume
3885 : blume 828 Date: 2001/05/11 14:35:00 EDT
3886 :     Tag: blume-20010511-ml-nlffi
3887 :     Description:
3888 :    
3889 :     I finally took the plunge and added my new FFI code to the main
3890 :     repository. For x86-linux it is now ready for prime-time.
3891 :    
3892 :     There are two new subdirectories of "src":
3893 :    
3894 :     - ml-nlffi-lib:
3895 :     The utility library for programs using the FFI interface.
3896 :     Here is the implementation of $/c.cm and its associated low-level
3897 :     partners $/c-int.cm and $/memory.cm.
3898 :     - ml-nlffigen:
3899 :     A stand-alone program for generating ML glue code from C source
3900 :     code.
3901 :    
3902 :     Building ml-nlffigen requires $/ckit-lib.cm.
3903 :    
3904 :     The config/install.sh script has been updates to do the Right Thing
3905 :     (hopefully).
3906 :    
3907 :     Notice that the source tree for the C-Kit will not be put under "src"
3908 :     but directly under the installation root directory. (This is the
3909 :     structure that currently exists on the CVS server when you check out
3910 :     module "sml".) Fortunately, config/install.sh knows about this oddity.
3911 :    
3912 :     Bugs: No documentation yet.
3913 :    
3914 :     ----------------------------------------------------------------------
3915 :     Name: Matthias Blume
3916 : blume 826 Date: 2001/05/09 16:35:00 EDT
3917 :     Tag: blume-20010509-cpscontract
3918 :     Description:
3919 :    
3920 :     Fixed a bug in the accounting code in cpsopt/contract.sml. (The
3921 :     wrapper/unwrapper elimination did not decrement usage counts and some
3922 :     dead variables got overlooked by the dead-up logic.)
3923 :    
3924 :     ----------------------------------------------------------------------
3925 : george 824 Name: Lal George
3926 :     Date: 2001/05/08 17:26:09 EDT
3927 :     Tag: george-20010508-omit-frameptr
3928 :     Description:
3929 :    
3930 :     Changes to implement the omit-frame-pointer optimization to support
3931 :     raw C calls. For now, there is only support on the Intel x86, but
3932 :     other architectures will follow as more experience is gained with this.
3933 :    
3934 :    
3935 :     ----------------------------------------------------------------------
3936 : blume 818 Name: Matthias Blume
3937 : blume 819 Date: 2001/05/07 14:40:00 EDT
3938 :     Tag: blume-20010507-proxies
3939 :     Description:
3940 :    
3941 :     I made into "proxy libraries" all libraries that qualify for such a
3942 :     change. (A qualifying library is a library that has another library or
3943 :     groups as its sole member and repeats that member's export list
3944 :     verbatim. A proxy library avoids this repetition by omitting its export
3945 :     list, effectively inheriting the list that its (only) member exports.
3946 :     See the CM manual for more explanation.)
3947 :     The main effect is that explicit export lists for these libraries
3948 :     do not have to be kepts in sync, making maintenance a bit easier.
3949 :    
3950 :     I also added copyright notices to many .cm-files.
3951 :    
3952 :     Last but not least, I made a new set of bootfiles.
3953 :    
3954 :     ----------------------------------------------------------------------
3955 :     Name: Matthias Blume
3956 : blume 818 Date: 2001/05/04 17:00:00 EDT
3957 :     Tag: blume-20010504-cm-lsplit
3958 :     Description:
3959 :    
3960 :     0. John merged pending changes to $/smlnj-lib.cm
3961 :    
3962 :     1. Allen's previous change accidentally backed out of one of Lal's
3963 :     earlier changes. I undid this mistake (re-introducing Lal's change).
3964 :    
3965 :     2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
3966 :     within the compiler where applicable. There is some code simplification
3967 :     because of that.
3968 :    
3969 :     3. The "split" phase (in FLINT) is now part of the default list of phases.
3970 :     Compiler.Control.LambdaSplitting.* can be used to globally control the
3971 :     lambda-splitting (cross-module-inlining) engine. In addition to that,
3972 :     it can now also be controlled on a per-source basis: CM has been taught
3973 :     a new tool parameter applicable to ML source files.
3974 :    
3975 :     - To turn lambda-splitting off completely:
3976 :     local open Compiler.Control.LambdaSplitting in
3977 :     val _ = set Off
3978 :     end
3979 :     - To make "no lambda-splitting" the global default (but allow per-source
3980 :     overriding); this is the initial setting:
3981 :     local open Compiler.Control.LambdaSplitting in
3982 :     val _ = set (Default NONE)
3983 :     end
3984 :     - To make "lambda-splitting with aggressiveness a" the global default
3985 :     (and allow per-source overriding):
3986 :     local open Compiler.Control.LambdaSplitting in
3987 :     val _ = set (Default (SOME a))
3988 :     end
3989 :    
3990 :     - To turn lambda-splitting off for a given ML souce file (say: a.sml)
3991 :     write (in the respective .cm-file):
3992 :     a.sml (lambdasplitting:off)
3993 :     - To turn lambda-splitting for a.sml on with minimal aggressiveness:
3994 :     a.sml (lambdasplitting:on)
3995 :     - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
3996 :     <a> is a decimal non-negative integer):
3997 :     a.sml (lambdasplitting:<a>)
3998 :     - To turn lambda-splitting for a.sml on with maximal aggressiveness:
3999 :     a.sml (lambdasplitting:infinity)
4000 :     - To use the global default for a.sml:
4001 :     a.sml (lambdasplitting:default)
4002 :     or simply
4003 :     a.sml
4004 :    
4005 :     ----------------------------------------------------------------------
4006 : leunga 815 Name: Allen Leung
4007 :     Date: 2001/05/04 01:57:00 EDT
4008 :     Tag: leunga-20010504-sync
4009 :     Description:
4010 : leunga 788
4011 : leunga 815 MLRISC features.
4012 :    
4013 :     1. Fix to CMPXCHG instructions.
4014 :     2. Changed RA interface to allow annotations in callbacks.
4015 :     3. Added a new method to the stream interface to allow annotations updates.
4016 :    
4017 : george 749 ----------------------------------------------------------------------
4018 : blume 812 Name: Matthias Blume
4019 : blume 814 Date: 2001/05/01 11:45:00 EDT
4020 :     Tag: blume-20010501-pcedittmp
4021 :     Description:
4022 :    
4023 :     Changed install.sh to use the current working directory instead of
4024 :     /usr/tmp for a temporary file (pcedittmp). The previous choice
4025 :     of /usr/tmp caused trouble with MacOS X because of file premission
4026 :     problems.
4027 :    
4028 :     ----------------------------------------------------------------------
4029 :     Name: Matthias Blume
4030 : blume 812 Date: 2001/04/20 11:10:00 EDT
4031 :     Tag: blume-20010420-inMLflag
4032 :     Description:
4033 :    
4034 :     - added vp_limitPtrMask to vproc-state.h
4035 :     (for use by the raw-C-calls mechanism to implement proper interrupt
4036 :     handling)
4037 :     - made the ML compiler aware of various data-structure offsets so it
4038 :     can generate code for accessing the vp_inML flag and vp_limitPtrMask
4039 :     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
4040 :     raw C-calls
4041 :    
4042 :     ----------------------------------------------------------------------
4043 : george 810 Name: Lal George
4044 :     Date: 2001/04/20 09:15:28 EDT
4045 :     Tag: george-20010420-macosX
4046 :     Description:
4047 :    
4048 :     - Changes to port to Mac OS X; Darwin.
4049 :    
4050 :     - In the process I found that sqrt was broken on the PPC, because the
4051 :     fsqrt instruction is not implemented.
4052 :    
4053 :     ----------------------------------------------------------------------
4054 : blume 799 Name: Matthias Blume
4055 : blume 808 Date: 2001/04/18 12:45:00 EDT
4056 :     Tag: blume-20010418-ccalls
4057 :     Description:
4058 :    
4059 :     - fixed two off-by-4 errors in the x86-specific c-calls implementation
4060 :     (this bug prevented structure arguments containing pointers from being
4061 :     passed correctly)
4062 :     - changed the raw-C-call code in mlriscGen.sml in such a way that
4063 :     structure arguments are represented as a pointer to the beginning
4064 :     of the structure (instead of having a series of synthesized arguments,
4065 :     one for each structure member)
4066 :    
4067 :     - made makeml script's verbosity level configurable via environment
4068 :     variable (MAKEML_VERBOSITY)
4069 :    
4070 : blume 813 - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
4071 : blume 808 in rawmem-x86.sml; we are now using the real thing
4072 :    
4073 :     ----------------------------------------------------------------------
4074 :     Name: Matthias Blume
4075 : blume 806 Date: 2001/03/22 16:25:00 EST
4076 :     Tag: blume-20010322-bootfiles
4077 :     Description:
4078 :    
4079 :     Created a new set of bootfiles (for your automatic installation convenience).
4080 :    
4081 :     ----------------------------------------------------------------------
4082 :     Name: Matthias Blume
4083 : blume 805 Date: 2001/03/22 15:10:00 EST
4084 :     Tag: blume-20010322-rawmem-parcm
4085 :     Description:
4086 :    
4087 :     1. All "raw memory access" primitives for the new FFI are implemented now
4088 :     (at least on the x86).
4089 :     2. Some further cleanup of CM's parallel make mechanism.
4090 :    
4091 :     ----------------------------------------------------------------------
4092 :     Name: Matthias Blume
4093 : blume 801 Date: 2001/03/19 17:53:00 EST
4094 :     Tag: blume-20010319-parallel
4095 :     Description:
4096 :    
4097 :     Parallel make (using compile servers) now works again.
4098 :    
4099 :     To this end, CM.stabilize and CMB.make have been modified to work in
4100 :     two passes when compile servers are attached:
4101 :     1. Compile everything, do not perform stabilization; this pass
4102 :     uses compile servers
4103 :     2. Stabilize everything; this pass does not use compile servers
4104 :     If there are no compile servers, the two passes are combined into one
4105 :     (as before). Splitting the passes increases the inherent parallelism
4106 :     in the dependency graph because the entire graph including all
4107 :     libraries is available at the same time. This, in turn, improves
4108 :     server utilization. The downside is that the master process will
4109 :     have to do some extra work after compilation is done (because for
4110 :     technical reasons it must re-read all the binfiles during stabilization).
4111 :    
4112 :     ----------------------------------------------------------------------
4113 :     Name: Matthias Blume
4114 : blume 800 Date: 2001/03/16 12:22:00 EST
4115 :     Tag: blume-20010316-bootfiles
4116 :     Description:
4117 :    
4118 :     Created a new set of bootfiles (for your automatic installation convenience).
4119 :    
4120 :     ----------------------------------------------------------------------
4121 :     Name: Matthias Blume
4122 : blume 799 Date: 2001/03/16 11:00:00 EST
4123 :     Tag: blume-20010316-MLTREE-fixup
4124 :     Description:
4125 :    
4126 :     This is a minor fixup for an (untagged) earlier commit by Allen.
4127 :     (A file was missing).
4128 :    
4129 :     ----------------------------------------------------------------------
4130 : leunga 788 Name: Allen Leung
4131 : leunga 796 Date: Mon Mar 5 18:54:57 EST 2001
4132 :     Tag: leunga-20010305-cut-support
4133 :    
4134 :     1. New support for alternative control-flow in MLTREE.
4135 :     Currently we support
4136 :    
4137 :     FLOW_TO(CALL ...., [k1,...,kn])
4138 :    
4139 :     This is needed for 'cuts to' in C-- and try/handle-like constructs
4140 :     in Moby
4141 :    
4142 :     New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
4143 :    
4144 :     2. Register Allocator
4145 :    
4146 :     Changes in interface [from Fermin, John]
4147 :    
4148 :     3. Alpha 8-bit SLL support [Fermin]
4149 :    
4150 :     4. All architectures
4151 :    
4152 :     A new module (ClusterExpandCopies) for expanding parallel copies.
4153 :    
4154 :     ----------------------------------------------------------------------
4155 :     Name: Allen Leung
4156 : leunga 788 Date: 2001/02/27 23:07:00 EST
4157 :     Tag: leunga-20010227-minor-stuff
4158 :    
4159 :     1. Alpha bug fix for CMOVNE
4160 :     2. Handle mltree COND(..,FCMP ...,...)
4161 :     3. Bug fix in simplifier
4162 :    
4163 :     ----------------------------------------------------------------------
4164 : blume 777 Name: Matthias Blume
4165 : blume 781 Date: 2001/01/30 17:50:00 EST
4166 :     Tag: blume-20010130-sync
4167 :     Description:
4168 :    
4169 :     This is just a minor update to sync my devel branch with the main brach.
4170 :     The only visible change is the addition of some README files.
4171 :    
4172 :     ----------------------------------------------------------------------
4173 :     Name: Matthias Blume
4174 : blume 778 Date: 2001/01/12 23:30:00 JST
4175 :     Tag: blume-20010112-bootfiles
4176 :     Description:
4177 :    
4178 :     Made a new set of bootfiles that goes with the current state of the
4179 :     repository.
4180 :    
4181 :     ----------------------------------------------------------------------
4182 :     Name: Matthias Blume
4183 : blume 777 Date: 2001/01/12 21:20:00 JST
4184 :     Tag: blume-20010112-sync
4185 :     Description:
4186 :    
4187 :     I am just flushing out some minor changes that had accumulated in
4188 :     my private branch in order to sync with the main tree. (This is
4189 :     mainly because I had CVS trouble when trying to merge _into_ my
4190 :     private branch.)
4191 :    
4192 :     Most people should be completely unaffected by this.
4193 :    
4194 :     ----------------------------------------------------------------------
4195 : leunga 775 Name: Allen Leung
4196 :     Date: Thu Jan 11 21:03:00 EST 2001
4197 :     Tag: leunga-20010111-labexp=mltree
4198 :     Description:
4199 :    
4200 :     1. Removed the type LabelExp and replace it by MLTree.
4201 :     2. Rewritten mltree-simplify with the pattern matcher tool.
4202 :     3. There were some bugs in alpha code generator which would break
4203 :     64-bit code generation.
4204 :     4. Redo the tools to generate code with the
4205 :     5. The CM files in MLRISC (and in src/system/smlnj/MLRISC)
4206 :     are now generated by perl scripts.
4207 :    
4208 :     ----------------------------------------------------------------------
4209 : blume 771 Name: Matthias Blume
4210 : blume 774 Date: 2001/01/10 21:55:00 JST
4211 :     Tag: blume-20010110-rcc
4212 :     Description:
4213 :    
4214 :     The RCC stuff now seems to work (but only on the x86).
4215 :     This required hacking of the c-calls interface (and -implementation) in
4216 :     MLRISC.
4217 :    
4218 :     Normal compiler users should be unaffected.
4219 :    
4220 :     ----------------------------------------------------------------------
4221 :     Name: Matthias Blume
4222 : blume 773 Date: 2001/01/09 01:20:00 JST
4223 :     Tag: blume-20010109-rcc
4224 :     Description:
4225 :    
4226 :     This is a fairly big patch, flushing out a large number of pending
4227 :     changes that I made to my development copy over the last couple of days.
4228 :    
4229 :     Of practical relevance at this moment is a workaround for a pickling
4230 :     bug that Allen ran into the other day. The cause of the bug itself is
4231 :     still unknown and it might be hard to fix it properly, but the
4232 :     workaround has some merits of its own (namely somewhat reducing pickling
4233 :     overhead for certain libraries). Therefore, I think this solution should
4234 :     be satisfactory at this time.
4235 :    
4236 :     The rest of the changes (i.e., the vast majority) has to do with my
4237 :     ongoing efforts of providing direct support for C function calls from
4238 :     ML. At the moment there is a new primop "RAW_CCALL", typing magic
4239 :     in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
4240 :     case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
4241 :     translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
4242 :     handle RCC.
4243 :    
4244 :     The last part (the changes to mlriscGen.sml) are still known to be
4245 :     wrong on the x86 and not implemented on all other architectures. But
4246 :     the infrastructure is in place. I had to change a few functor
4247 :     signatures in the backend to be able to route the CCalls interface
4248 :     from MLRISC there, and I had to specialize the mltree type (on the
4249 :     x86) to include the necessary extensions. (The extensions themselves
4250 :     were already there and redy to go in MLRISC/x86).
4251 :    
4252 :     Everything should be very happy as soon as someone helps me with
4253 :     mlriscGen.sml...
4254 :    
4255 :     In any case, nothing of this should matter to anyone as long as the
4256 :     new primop is not being used (which is going to be the case unless you
4257 :     find it where I hid it :). The rest of the compiler is completely
4258 :     unaffected.
4259 :    
4260 :     ----------------------------------------------------------------------
4261 :     Name: Matthias Blume
4262 : blume 772 Date: 2001/01/05 00:30:00 JST
4263 :     Tag: blume-20010105-primops
4264 :     Description:
4265 :    
4266 :     Added some experimental support for work that I am doing right now.
4267 :     These changes mostly concern added primops, but there is also a new
4268 :     experimental C library in the runtime system (but currently not enabled
4269 :     anywhere except on Linux/X86).
4270 :    
4271 :     In the course of adding primops (and playing with them), I discovered that
4272 :     Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
4273 :     broken. (Zhong was very right he labeled this stuff as "major gross hack".)
4274 :     To recover, I made type information in INL_PRIM mandatory and changed
4275 :     prim.sml as well as built-in.sml accordingly. The InLine structure now
4276 :     has complete, correct type information (i.e., no bottom types).
4277 :    
4278 :     Since all these changes mean that we need new binfiles, I also bumped the
4279 :     version number to 110.32.1.
4280 :    
4281 :     ----------------------------------------------------------------------
4282 :     Name: Matthias Blume
4283 : blume 771 Date: 2000/12/30 22:10:00 JST
4284 :     Tag: blume-20001230-various
4285 :     Description:
4286 :    
4287 :     Added proxy libraries for MLRISC and let MLRISC libraries refer
4288 :     to each other using path anchors. (See CM manual for explanation.)
4289 :    
4290 :     Updated CM documentation.
4291 :    
4292 :     Fixed some bugs in CM.
4293 :    
4294 :     Implemented "proxy" libraries (= syntactic sugar for CM).
4295 :    
4296 :     Added "-quiet" option to makeml and changed runtime system accordingly.
4297 :    
4298 :     Added cleanup handler for exportML to reset timers and compiler stats.
4299 :    
4300 :     ----------------------------------------------------------------------