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

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1 : dbm 570 This is the HISTORY file for the Yale SML/NJ CVS repository.
2 :    
3 :     An entry should be made for _every_ commit to the repository.
4 :     The entries in this file will be used when creating the README
5 :     for new versions, so keep that in mind when writing the
6 :     description.
7 :    
8 :     The form of an entry should be:
9 :    
10 : mblume 1615 Name:
11 : mblume 1480 Date: yyyy/mm/dd
12 :     Tag: <post-commit CVS tag>
13 :     Description:
14 :    
15 :     ----------------------------------------------------------------------
16 : mblume 1622 Name: Matthias Blume (blume (at) tti - c (dot) org)
17 : mblume 1645 Date: 2004/10/11 16:37:00 CDT
18 :     Tag: blume-20041011-regions
19 :     Description:
20 :    
21 :     Made some minor modifications to elabcore.sml to have source regions
22 :     be propagated more tightly -- resulting in better (i.e., smaller)
23 :     regions being reported in error- and debug messages.
24 :    
25 :     ----------------------------------------------------------------------
26 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
27 : mblume 1644 Date: 2004/10/08 22:50:00 CDT
28 :     Tag: blume-20041008-cmkw
29 :     Description:
30 :    
31 :     Fixed handling of keywords in .cm files: After seeing "is" the lexer
32 :     treats subsequent occurrences of "group", "library", "source", "is",
33 :     "*", and "-" as ordinary identifiers rather than keywords.
34 :    
35 :     Most seriously, this fixes a problem with CM's "shell" tool. The tool
36 :     is supposed to accept a tool argument called "source", but this did
37 :     not work because of the clash with the keyword.
38 :    
39 :     ----------------------------------------------------------------------
40 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
41 : mblume 1642 Date: 2004/10/07 16:00:00 CDT
42 :     Tag: blume-20041007-cleanup
43 :     Description:
44 :    
45 :     Assorted cleanup work:
46 :    
47 :     - got rid of intstrmap in favor of using the library's
48 :     hash table implementation
49 :     - threw out most of the pathnames stuff, as it was not used anyway
50 :     - simplified tokentable implementation
51 :     - fixed some minor spelling errors
52 :    
53 :     ----------------------------------------------------------------------
54 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
55 : mblume 1641 Date: 2004/10/06 15:15:15 CDT
56 :     Tag: blume-20041006-handler
57 :     Description:
58 :    
59 :     Cleaned up the absyn to reflect the invariant that HANDLE always
60 :     carries a FNexp as part of the type definition. This eliminates some
61 :     superfluous sanity checks at runtime down the road.
62 :    
63 :     Some minor cleanup of the btrace code.
64 :    
65 :     ----------------------------------------------------------------------
66 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
67 : mblume 1640 Date: 2004/10/01 10:20:30 CDT
68 :     Tag: blume-20041001-slave
69 :     Description:
70 :    
71 :     Added hack to make slave mode work in the presence of the version
72 :     tool. (Still, since the master does two passes over the code for
73 :     CMB.make, the release number gets bumped twice when slaves are
74 :     attached. I don't know if this is worth fixing...)
75 :    
76 :     ----------------------------------------------------------------------
77 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
78 : mblume 1639 Date: 2004/09/30 10:55:00 CDT
79 :     Tag: blume-20040930-version
80 :     Description:
81 :    
82 :     * Moved the "version" magic into its own little library under
83 :     src/system/smlnj/internal. This avoids expensive reconstruction
84 :     of a stable src/compiler/core.cm.
85 :    
86 :     * At the same time, structure CompilerVersion is now known as structure
87 :     SMLNJVersion.
88 :    
89 :     * Arranged for the version tool to NOT kick in when rebuilding the system
90 :     (makeml -rebuild, fixpt). Otherwise one would never reach a fixpoint.
91 :     Also, loading the versiontool does not work when rebuilding the system
92 :     because CM is not properly initialized at that time.
93 :    
94 :     ----------------------------------------------------------------------
95 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
96 : mblume 1638 Date: 2004/09/29 14:00:00 CDT
97 :     Tag: blume-20040929-autoversion
98 :     Description:
99 :    
100 :     Implemented some CM magic to have
101 :     file src/compiler/TopLevel/main/version.sml
102 :     generated automagically.
103 :     The version is taken from two files: config/version and config/release.
104 :     The first is expected to contain a two-part version number such as 110.49.
105 :     The second should contain a single number, but it may be missing.
106 :    
107 :     If the environment variable VERSIONTOOL_BUMP_RELEASE is defined at the
108 :     time the version tool is loaded (which is the first time you say CMB.make),
109 :     then the tool will increment the value stored in config/release every
110 :     time CMB.make is invoked.
111 :    
112 :     The binfile format is now insensitive to anything beyond the first
113 :     two components of a version number, so bumping the release does not render
114 :     binfiles incompatible. Auto-bumping can be used to keep track of versions
115 :     during development without invalidating existing binfiles.
116 :    
117 :     In any case, every CMB.make updates the date information in version.sml.
118 :     (This is the date that is printed in the banner.)
119 :    
120 :     ----------------------------------------------------------------------
121 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
122 : mblume 1634 Date: 2004/09/28 10:53:00 CDT
123 :     Tag: blume-20040928-controls
124 :     Description:
125 :    
126 :     Some cleanup of the controls code.
127 :    
128 :     ----------------------------------------------------------------------
129 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
130 : mblume 1633 Date: 2004/09/27 22:08:00 CDT
131 :     Tag: blume-20040927-controls
132 :     Description:
133 :    
134 :     Added two pieces of functionality to the Controls interface:
135 :    
136 :     1. val save'restore: 'a control -> unit -> unit
137 :    
138 :     grabs the current value of the control in stage 1 and restores it
139 :     in stage 2.
140 :    
141 :     2. val set' : 'a control * 'a -> unit -> unit
142 :    
143 :     stores the given value into the control in stage 2 (i.e., delayed)
144 :     but does all error checking in stage 1.
145 :     (This is for string controls that need to do parse their argument --
146 :     something that might fail. In some cases, notably in CM, one
147 :     already knows the intended argument but wants to delay the actual
148 :     assignment until a time when error recovery would be more difficult.)
149 :    
150 :     Changed the handling of controls in tool arguments to classes "sml" and
151 :     "lazysml":
152 :     - use Controls.save'restore as a more robust way of restoring the
153 :     old value (in particular: without having to re-parse the string)
154 :     - use controls to handle the "overload" keyword in the init group
155 :     (I believe this change actually fixes a long-standing obscure bug.)
156 :    
157 :     ----------------------------------------------------------------------
158 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
159 : mblume 1632 Date: 2004/09/27 17:00:00 CDT
160 :     Tag: blume-20040927-lazysml
161 :     Description:
162 :    
163 :     Added a new tool class called "lazysml" to CM's tool chest. The only
164 :     difference to "sml" is that compilation is done with Control.lazysml
165 :     set to true. A source of class "lazysml" is automatically recognized
166 :     by a file name suffix of ".lml".
167 :    
168 :     In addition to the above feature, the original class "sml" now also
169 :     supports a tool argument "lazy" which has the same effect. As a
170 :     result, the following three lines are equivalent:
171 :    
172 :     foo.sml : lazysml
173 :     foo.sml : sml (lazy)
174 :     foo.sml (lazy)
175 :    
176 :     The setting goes into effect both during parsing and during
177 :     compilation. The original setting is restored right after parsing and
178 :     after compilation, respectively.
179 :    
180 :     In addition to all the above, there is also a general mechanism to set
181 :     ANY of the "controls" that are available at the command line via
182 :     "-C..." on a per-sml-file basis. The same rules that apply for "lazy"
183 :     apply as well. (In fact, "lazy" is implemented as a special case of
184 :     the general mechanism.)
185 :    
186 :     The .cm file syntax uses a new keyword tool argument called "with".
187 :     There are several ways of indicating the desired settings:
188 :    
189 :     foo.sml (with:parser.quotations=true)
190 :     foo.sml (with:(name:parser.quotations value:true))
191 :     foo.sml (with:(name:name1 value:value1 name:name2 value:value2 ...))
192 :     foo.sml (with:(name1=value1 name2=value2 ...))
193 :     foo.sml (with:(name1=value1 name:name2 value:value2 name3=value3 ...))
194 :    
195 :     etc.
196 :    
197 :     Another possible abbreviation is to leave out the =v or value:v part
198 :     if the name refers to a boolean control (in which case the value is
199 :     taken to be true). Thus, one could get lazy sml also by saying:
200 :    
201 :     foo.sml (with:parser.lazy-keyword=true)
202 :     foo.sml (with:parser.lazy-keyword)
203 :     foo.sml (with:(name:parser.lazy-keyword value:true))
204 :     foo.sml (with:(name:parser.lazy-keyword))
205 :    
206 :     ----------------------------------------------------------------------
207 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
208 : mblume 1631 Date: 2004/09/24 16:22:00 CDT
209 :     Tag: blume-20040924-ppc-long-branch
210 :     Description:
211 :    
212 :     Turned message about "emiting long form of branch" off by default.
213 :     Added a control flag to turn it back on when desired.
214 :    
215 :     ----------------------------------------------------------------------
216 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
217 : mblume 1630 Date: 2004/09/24 16:05:00 CDT
218 :     Tag: blume-20040924-rounding
219 :     Description:
220 :    
221 :     Applied patch for setting rounding modes under Mac OS X. Thanks to
222 :     Melissa O'Neill for providing the code!
223 :    
224 :     ----------------------------------------------------------------------
225 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
226 : mblume 1629 Date: 2004/09/23 17:30:00 CDT
227 :     Tag: blume-20040923-envvars
228 :     Description:
229 :    
230 :     1. Changed definition of type ControlRegistry.registry_tree to
231 :     include control_info (i.e., the name of the controlling environment
232 :     variable).
233 :    
234 :     2. Added command-line flags -e and -E to print the names of environment
235 :     variables that can be used to control internal settings.
236 :     (This uses the new API mentioned in 1.)
237 :    
238 :     ----------------------------------------------------------------------
239 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
240 : mblume 1622 Date: 2004/09/13 16:50:00 CDT
241 :     Tag: Release_110_49
242 :     Description:
243 :    
244 :     New working version (110.49). NEW BOOTFILES!
245 :    
246 :     ----------------------------------------------------------------------
247 : mblume 1621 Name: Matthias Blume
248 :     Date: 2004/09/13 16:20:00 CDT
249 :     Tag: blume-20040913-config-mlrisc
250 :     Description:
251 :    
252 :     Put target "mlrisc" back into the default list.
253 :     (There is no harm in having it, and some users have expressed their
254 :     wish to have "mlrisc" included by default.)
255 :    
256 :     ----------------------------------------------------------------------
257 : jhr 1620 Name: John Reppy
258 :     Date: 2004/09/13
259 :     Tag: jhr-20040913-signals
260 :     Description:
261 :    
262 :     Fixed the signal masking code to properly nest mask/unmask operations
263 :     on a per-signal basis.
264 :    
265 :     ----------------------------------------------------------------------
266 : mblume 1619 Name: Matthias Blume (blume (at) tti - c (dot) org)
267 :     Date: 2004/09/08 13:20:00 CDT
268 :     Tag: blume-20040908-heap-magic
269 :     Description:
270 :    
271 :     Bumped the heap macig number to 0x09082004 to account for the changed
272 :     layout of the ML frame under MacOS X.
273 :    
274 :     ----------------------------------------------------------------------
275 : allenleung 1618 Name: Allen Leung (leunga (at) reservoir (dot) com)
276 :     Date: 2004/09/03 11:26:00 EST
277 :     Tag: leunga-20040903-cygwin-install
278 :     Description:
279 :    
280 :     Added a patch to _arch-n-opsys to enable the Cygwin runtime.
281 :     The Cygwin runtime is turned on by setting the environment
282 :     variable SMLNJ_CYGWIN_RUNTIME to 1.
283 :    
284 :     ----------------------------------------------------------------------
285 : mblume 1615 Name: Matthias Blume (blume (at) tti - c (dot) org)
286 : mblume 1617 Date: 2004/08/31 17:15:00 CDT
287 :     Tag: blume-20040831-core
288 :     Description:
289 :    
290 :     Added some exports to src/compiler/core.cm upon request by J. Joemann.
291 :    
292 :     ----------------------------------------------------------------------
293 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
294 : mblume 1616 Date: 2004/08/30 17:55:00 CDT
295 :     Tag: blume-20040830-installer
296 :     Description:
297 :    
298 :     Upon request by Johannes Joemann:
299 :    
300 :     - improved ML code of installer to fall back to coping when renaming
301 :     fails (i.e., when source and target are on different file systems);
302 :     the code compiles but has yet to be tested in anger
303 :     - removed mlrisc from list of default targets (config/targets)
304 :    
305 :     ----------------------------------------------------------------------
306 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
307 : mblume 1615 Date: 2004/08/27 17:20:00 CDT
308 :     Tag: blume-20040827-ptreql
309 :     Description:
310 :    
311 :     Added ptreql primop to structure InlineT (upon request from Larry
312 :     Paulson).
313 :    
314 :     ----------------------------------------------------------------------
315 : allenleung 1613 Name: Allen Leung (leunga (at) reservoir (dot) com)
316 : allenleung 1614 Date: 2004/08/15 21:21:00 EST
317 :     Tag: leunga-110_48-udgraph
318 :     Description:
319 :    
320 :     Another bug fix from Carl Hauser:
321 :    
322 :     diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml
323 :     > 48c48
324 :     > < | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else
325 :     > e::L)
326 :     > ---
327 :     > > | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L)
328 :     > Without this, any deletion of an edge in an undirected graph does severe
329 :     > violence to the graph.
330 :    
331 :     ----------------------------------------------------------------------
332 :     Name: Allen Leung (leunga (at) reservoir (dot) com)
333 : allenleung 1613 Date: 2004/08/10 23:35:00 EST
334 :     Tag: leunga-110_48-ppc
335 :     Description:
336 :    
337 :     The IBM/MacOS syntax switch on PPC was incorrectly swapped.
338 :    
339 :     ----------------------------------------------------------------------
340 : mblume 1602 Name: Matthias Blume (blume (at) tti - c (dot) org)
341 : mblume 1615 Date: 2004/08/10 12:00:00 CDT
342 : mblume 1602 Tag: Release_110_48
343 :     Description:
344 :    
345 :     New working version (110.48). NEW BOOTFILES!
346 :    
347 :     ----------------------------------------------------------------------
348 : allenleung 1599 Name: Allen Leung (leunga (at) reservoir (dot) com)
349 :     Date: 2004/08/09 12:21:00 EST
350 :     Tag: leunga-110_47-dijsktra
351 :     Description:
352 :    
353 :     Bug fix from Carl Hauser:
354 :    
355 :     single_source_shortest_paths in dijkstra.sml was observed to get wrong
356 :     answers (by comparing to single_source_shortest_paths in bellman-ford.sml).
357 :    
358 :     The problem is that following the expression A.update(dist,s,Num.zero)
359 :     it is necessary to update the priority queue using Q.decreaseWeight(Q,s).
360 :    
361 :     ----------------------------------------------------------------------
362 : mblume 1595 Name: Matthias Blume (blume (at) tti - c (dot) org)
363 :     Date: 2004/08/06 18:10:00 CDT
364 :     Tag: blume-20040806-cmdline
365 :     Description:
366 :    
367 :     Fiddled with handling of command-line options:
368 :    
369 :     * sml now quits after processing the command line
370 :     if -H, -S, -h<n>, or -s<n> appears as the last
371 :     command-line argument
372 :     * a new option -q terminates the session when encountered on
373 :     the command line; subsequent arguments will be ignored
374 :     * bug fixes: short (erroneous) arguments are no longer ignored
375 :     completely
376 :    
377 :     ----------------------------------------------------------------------
378 : allenleung 1593 Name: Allen Leung (leunga (at) reservoir (dot) com)
379 :     Date: 2004/08/04 18:17:00 EST
380 :     Tag: leunga-110_47-ppc-ibm-asm
381 :     Description:
382 :    
383 :     - Added minimal IBM assembly syntax support for PowerPC.
384 :    
385 :     - Cygwin: manually changed the file cygwin.def. Some exported symbols have
386 :     been altered in the runtime. We need an automatic way to keep the file
387 :     in sync.
388 :    
389 :     ----------------------------------------------------------------------
390 : mblume 1548 Name: Matthias Blume (blume (at) tti - c (dot) org)
391 : mblume 1581 Date: 2004/08/04 14:00:00 CDT
392 :     Tag: Release_110_47
393 :     Description:
394 :    
395 :     New working version (110.47). NEW BOOTFILES!
396 :    
397 :     ----------------------------------------------------------------------
398 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
399 : mblume 1580 Date: 2004/08/03 14:25:00 CDT
400 :     Tag: blume-20040803-callingconv
401 :     Description:
402 :    
403 :     Added low-level support for choosing C calling conventions by
404 :     twiddling the type of rawccall. (See
405 :     src/compiler/Semant/types/cproto.sml for details.)
406 :    
407 :     ----------------------------------------------------------------------
408 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
409 : mblume 1579 Date: 2004/08/02 15:55:00 CDT
410 :     Tag: blume-20040802-backout
411 :     Description:
412 :    
413 :     Backed out of change to win32-filesys.c. The earlier patch to
414 :     get_file_time caused CM to produce files with the wrong time stamp.
415 :    
416 :     ----------------------------------------------------------------------
417 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
418 : mblume 1573 Date: 2004/08/02 14:45:00 CDT
419 :     Tag: blume-20040802-nlffi-win32
420 :     Description:
421 :    
422 :     Added NLFFI support for Win32, adapted from a patch provided by David
423 :     Hansel. This is currently completely untested. Also, the issue
424 :     concerning stdcall vs. ccall is still unresolved.
425 :    
426 :     ----------------------------------------------------------------------
427 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
428 : mblume 1572 Date: 2004/07/30 17:55:00 CDT
429 :     Tag: blume-20040730-various
430 :     Description:
431 :    
432 :     Gearing up towards 110.47...
433 :    
434 :     - various minor bugfixes to ml-nlffigen
435 :     - a beginning of a manual for nlffi
436 :    
437 :     - eliminated 'export name=value' in config/install.sh as this does
438 :     not work with certain versions of /bin/sh
439 :     (Thanks to David King at Motorola for catching this.)
440 :    
441 :     - several bugfixes provided or suggested by David Hansel at Reactive Systems:
442 :     - added a test for tm==NULL to gmtime.c and localtime.c
443 :     - applied patch for incorrect GetFileTime under win32
444 :     - toSeconds -> toMilliseconds in Win32/win32-process.sml
445 :    
446 :     ----------------------------------------------------------------------
447 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
448 : mblume 1557 Date: 2004/07/21 18:20:00 CDT
449 :     Tag: blume-20040721-nlffigen
450 :     Description:
451 :    
452 :     - Fixed minor issue in ml-nlffigen: Now generate structure T_foo
453 :     for a typedef to an incomplete type, but leave out the "typ" member.
454 :     (This is just for consistency.)
455 :     - Started to produce what is supposed to become better (i.e., comprehensive)
456 :     documentation of what ml-nlffigen does and produces.
457 :    
458 :     ----------------------------------------------------------------------
459 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
460 : mblume 1548 Date: 2004/07/14 16:25:00 CDT
461 :     Tag: blume-20040714-union
462 :     Description:
463 :    
464 :     Added C_UNION to c-calls/c-types.sml and updated the machinery
465 :     (ml-nlffigen, cproto.sml) that conveys C function interface
466 :     information to the code generator.
467 :    
468 :     However, the actual architecture-specific implementation of function
469 :     arguments and results that are C unions is still not implemented.
470 :    
471 :     ----------------------------------------------------------------------
472 : allenleung 1539 Name: Allen Leung (leunga (at) reservoir (dot) com)
473 : allenleung 1546 Date: 2004/07/14 14:38:00 EST
474 :     Tag: leunga-110_46_1-ppc-lwzu
475 :     Description:
476 :    
477 :     Added these instructions to the PowerPC architecture:
478 :     LBZU(X), LHZU(X), LWZU(X),
479 :     STWU(X), STFDU, STFSU
480 :    
481 :     etc...
482 :    
483 :     Note: I haven't added their instruction encoding into the description.
484 :    
485 :     ----------------------------------------------------------------------
486 :     Name: Allen Leung (leunga (at) reservoir (dot) com)
487 : allenleung 1539 Date: 2004/07/13 15:04:00 EST
488 :     Tag: leunga-110_46_1-ppc-lwarx
489 :     Description:
490 :    
491 :     Added the two instructions LWARX and STWCX to the PowerPC
492 :     instruction set.
493 :    
494 :     A (untested) rewrite of loop-structure.sml. The old version
495 :     is completely broken.
496 :    
497 :     ----------------------------------------------------------------------
498 : mblume 1479 Name: Matthias Blume (blume (at) tti - c (dot) org)
499 : mblume 1537 Date: 2004/07/13 13:50:00 CDT
500 :     Tag: blume-20040713-nlffi
501 :     Description:
502 :    
503 :     - use paramAlloc to report c-calls with too many arguments
504 :     (for PPC version where parameter area is pre-allocated)
505 :     - added ccall_maxargspace to machspec (to implement the above)
506 :     - made "make" commend in CM's "make" tool configurable
507 :     - added option (default: on) for passing the name of the SML/NJ's "bin"
508 :     directory to "make"; the call looks like this:
509 :    
510 :     make <options> SMLNJ_BINDIR=<dir> <target>
511 :    
512 :     This can be used by the Makefile to, e.g., pick the "right" version
513 :     of ml-nlffigen.
514 :     - minor code tweaks
515 :    
516 :     ----------------------------------------------------------------------
517 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
518 : mblume 1532 Date: 2004/07/12 22:50:00 CDT
519 :     Tag: blume-110_46_1-macosx-nlffi
520 :     Description:
521 :    
522 :     NLFFI under Mac OS X now working (sort of). This is largely untested,
523 :     though.
524 :    
525 :     Note: 1. You have to make a new, clean build of the runtime system.
526 :     2. There are new BOOTFILES, you have to use them!
527 :     (Doing the bootstrap process yourself would be *very* painful!
528 :     If you absolutely have to do it, build the system under
529 :     a different architecture and then cross-compile.)
530 :    
531 :     Version bumped to 110.46.1 to account for runtime data format changes.
532 :    
533 :     ----------------------------------------------------------------------
534 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
535 : mblume 1515 Date: 2004/06/18 14:30:00 CDT
536 :     Tag: blume-20040618-unix
537 :     Description:
538 :    
539 :     Changed the implementation of structure Unix so that the same stream
540 :     is returned every time one of the {text,bin}{In,Out}streamOf functions
541 :     is invoked on the same proc. This is not what the spec currently
542 :     says -- although IMO it arguably should. (See discussion below.)
543 :    
544 :     ----------------------------------------------------------------------
545 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
546 : mblume 1507 Date: 2004/06/17 18:15:00 CDT
547 :     Tag: Release_110_46
548 :     Description:
549 :    
550 :     New working version (110.46). NEW BOOTFILES!
551 :    
552 :     ----------------------------------------------------------------------
553 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
554 : mblume 1506 Date: 2004/06/17 17:20:00 CDT
555 :     Tag: blume-20040617-timer-unix
556 :     Description:
557 :    
558 :     Changed the interface of structures Timer and Unix to match the most
559 :     recent Basis spec.
560 :    
561 :     In the case of Unix there still seems to be an open/weird issue:
562 :    
563 :     The {text,bin}{In,Out}streamOf functions are supposed to create
564 :     fresh streams whenever they are called -- as opposed to have them
565 :     return the same stream every time. This design is supposed to
566 :     prevent space leaks caused by proc values hanging on to streams.
567 :    
568 :     The reap function, on the other hand, is supposed to close the
569 :     streams. This cannot be done without having a handle on the
570 :     stream in proc after all...
571 :    
572 :     I took the liberty to implement the following stopgap solution:
573 :    
574 :     The proc value hangs on to the most recently created stream(s).
575 :     Reap closes those. If either or both of the two streams hadn't
576 :     been created at all yet, then reap will close the corresponding
577 :     file descriptors directly.
578 :    
579 :     PS: I don't understand the original space leak argument anymore. If
580 :     a proc hangs on to the imperative stream, then I/O operations on those
581 :     will advance the state of the cached stream and avoid the space leak.
582 :    
583 :     ----------------------------------------------------------------------
584 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
585 : mblume 1500 Date: 2004/05/28 16:45:00 CDT
586 :     Tag: blume-20040528-basis
587 :     Description:
588 :    
589 :     Added signature PACK_REAL and exported functor PrimIO.
590 :    
591 :     ----------------------------------------------------------------------
592 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
593 : mblume 1498 Date: 2004/05/25 16:00:00 CDT
594 :     Tag: blume-20040525-group-owner
595 :     Description:
596 :    
597 :     CM now ignores (but still accepts) the "owner" information in group
598 :     descriptions. The owner of a group is its next enclosing
599 :     library. Each group must have a unique owner. (There is a virtual
600 : mblume 1505 "toplevel" library that owns groups which are not nested within a real
601 : mblume 1498 library.) Previously, each group had to explicitly declare its owner,
602 :     and CM would check that such a declaration is correct. The new scheme
603 :     is to have CM check that for each group there is precisely one owning
604 :     library.
605 :    
606 :     The advantage of the new scheme is that the programmer no longer needs
607 :     to maintain the somewhat annoying owner information. The downside is
608 :     that CM cannot enforce the ownership rule across multiple runs of
609 :     CM.make. Fortunately, enclosing the same group in two different
610 :     libraries A and B which are not part of the same program does not
611 :     cause real problems.
612 :    
613 :     ----------------------------------------------------------------------
614 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
615 : mblume 1496 Date: 2004/05/20 16:00:00 CDT
616 :     Tag: blume-20040520-win32
617 :     Description:
618 :    
619 :     Made the win32 version work again. (Strangely, a misplaced comma had
620 :     slipped into win32-process.c which prevented the runtime from being
621 :     compiled correctly.)
622 :    
623 :     Also, included a minor addition to ml-build.bat analogous to what was
624 :     done in blume-20040519-ml-build.
625 :    
626 :     ----------------------------------------------------------------------
627 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
628 : mblume 1494 Date: 2004/05/19 22:10:00 CDT
629 :     Tag: blume-20040519-ml-build
630 :     Description:
631 :    
632 :     Arranged for ml-build to clean up after itself a little bit better.
633 :     The script generates a temporary SML source file and compiles it using
634 :     CM, so CM generates metadata (GUID, SKEL, objectfile) for it. It now
635 :     gets rid of those at the end, so they don't accumulate under .cm.
636 :    
637 :     This required a minor change to install.sh because the name of the
638 :     metadata directory (default: .cm) is actually configurable at
639 :     installation time.
640 :    
641 :     ----------------------------------------------------------------------
642 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
643 : mblume 1491 Date: 2004/05/18 15:50:00 CDT
644 :     Tag: blume-20040518-mkreader
645 :     Description:
646 :    
647 :     Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
648 :     implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
649 :    
650 :     ----------------------------------------------------------------------
651 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
652 : mblume 1489 Date: 2004/05/11 14:35:00 CDT
653 :     Tag: blume-20040511-win32sock
654 :     Description:
655 :    
656 :     Added previously missing support for many socket-related functions
657 :     under win32. Thanks to David Hansel <hansel@reactive-systems.com>
658 :     for the voluminous patch!
659 :    
660 :     (I have not tested this patch under win32 yet.)
661 :    
662 : mblume 1490 Here is David's e-mail:
663 :    
664 :     Hi,
665 :    
666 :     Attached to this email you find a diff against sml/nj 110.45
667 :     that will enable socket support under Windows.
668 :    
669 :     To apply the patch (using unix or cygwin)
670 :     1) gunzip runtime.diff.gz
671 :     2) "cd" into "src/runtime" in the source tree of a fresh
672 :     110.45 installation.
673 :     3) patch -p 1 < [your/path/to]runtime.diff
674 :    
675 :     The code compiles fine but has NOT yet been extensively tested.
676 :     I only ran a few tests for basic socket client functionality
677 :     (which worked fine). Especially the functions that use ioctl
678 :     are not tested at all and might not work (see below).
679 :    
680 :     I implemented this since we want to move to a newer version of sml/nj
681 :     but need socket support in order to use it. This is the first time I
682 :     even had a look at the sml/nj source, so please review my changes
683 :     before making this part of the distribution! Here are a few issues
684 :     that I think might be better for someone to solve who is more
685 :     familiar with the sml/nj source (and socket programming):
686 :    
687 :     - getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
688 :     exception since I could not figure out what the windows equivalent
689 :     of these functions is
690 :    
691 :     - In sockets-osdep.h there are a some #include statements that are
692 :     only used in a few files that include sockets-osdep.h
693 :    
694 :     - In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
695 :     does not process its return value since I don't know how to
696 :     report an error upwards.
697 :    
698 :     - It would probably be good to have a call to WSACleanup() when
699 :     the library is unloaded (if there is such a possibility).
700 :     Otherwise I think Windows will take care of this automatically
701 :     when the process finishes.
702 :    
703 :     - I used ioctlsocket() as a replacement for ioctl() but I have
704 :     no idea if that is actually the proper replacement on Windows.
705 :    
706 :     - All these issues are marked in the code by "FIXME" comments.
707 :    
708 :     We use sml/nj extensively in our products and are quite happy
709 :     with it. I hope this contribution will help you.
710 :    
711 :     Keep up the good work!
712 :    
713 :     David
714 :    
715 : mblume 1489 ----------------------------------------------------------------------
716 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
717 : mblume 1488 Date: 2004/05/11 14:20:00 CDT
718 :     Tag: blume-20040511-installml
719 :     Description:
720 :    
721 :     Fixed two bugs in installml script. (Thanks to Vesa A. Norrman for
722 :     the patch.)
723 :    
724 :     ----------------------------------------------------------------------
725 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
726 : mblume 1487 Date: 2004/05/11 14:05:00 CDT
727 :     Tag: blume-20040511-nlffi-netbsd
728 :     Description:
729 :    
730 :     Added support for nlffi under netbsd. (Thanks to Vesa A. Norrman for
731 :     the patch.)
732 :    
733 :     ----------------------------------------------------------------------
734 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
735 : mblume 1486 Date: 2004/05/11 12:05:00 CDT
736 :     Tag: blume-20040511-exports
737 :     Description:
738 :    
739 :     As per request by Adam Chlipala <adam@hcoop.net>, extended various
740 :     export lists in compiler-related .cm-files.
741 :    
742 :     ----------------------------------------------------------------------
743 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
744 : mblume 1485 Date: 2004/05/11 11:35:00 CDT
745 :     Tag: blume-20040511-allsource
746 :     Description:
747 :    
748 :     The installer now honors the "src-smlnj" target again, although its meaning
749 :     has changed from "all sources required for the compiler" to "all sources
750 :     the installer knows about". In other words, if you enable "src-smlnj"
751 :     in the "targets" file, then the installer will pull in sources for
752 :     everything. (Notice that this refers to source code only. Compiled
753 :     code is still only installed for modules that were requested explicitly
754 :     or which are required for other modules that were requested explicitly.)
755 :    
756 :     ----------------------------------------------------------------------
757 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
758 : mblume 1482 Date: 2004/04/23 17:40:00 CDT
759 :     Tag: blume-20040423-ieee-scan
760 :     Description:
761 :    
762 :     Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
763 :     in the exponent calculation we get INF or ZERO (depending on the mantissa
764 :     and the sign of the exponent).
765 :    
766 :     ----------------------------------------------------------------------
767 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
768 : mblume 1480 Date: 2004/04/23 10:40:00 CDT
769 :     Tag: blume-20040423-ml-build
770 :     Description:
771 :    
772 :     The ml-build script now terminates with a non-0 status when something
773 :     goes wrong.
774 :    
775 :     ----------------------------------------------------------------------
776 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
777 : mblume 1479 Date: 2004/04/22 16:35:00 CDT
778 :     Tag: blume-20040422-Option
779 :     Description:
780 :    
781 :     Made exception Option to be the same as exception Option.Option
782 :     (as it should be).
783 :    
784 :     ----------------------------------------------------------------------
785 : allenleung 1468 Name: Allen Leung (leunga (at) reservoir (dot) com)
786 :     Date: 2004/03/19 14:40:00 EST
787 :     Tag: leunga-20040319-cygwin-nlffi
788 :     Description:
789 :    
790 :     Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
791 :     of SML/NJ. The problem is that
792 :    
793 :     lib = dlopen(NULL, ...)
794 :     f = dlsym(lib, "malloc");
795 :    
796 :     does not work on Windows unless we explicitly export symbols
797 :     such as 'malloc' during linking. We fixed this by explicitly
798 :     exporting the required symbols with the magic gcc incantation:
799 :    
800 :     -Wl,--export-all cygwin.def
801 :    
802 :     where cygwin.def is a file containing all the symbols that
803 :     we wish to export.
804 :    
805 :     I suspect this is a Windows problem and we'll have to
806 :     do the same (somehow with windows compilers) when
807 :     we build the native win32 version with the system
808 :     calls LoadLibrary/GetProcAddress.
809 :    
810 :     ----------------------------------------------------------------------
811 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
812 : mblume 1465 Date: 2004/03/04 16:35:00 CST
813 :     Tag: blume-20040304-intinf-fmt
814 :     Description:
815 :    
816 :     Fixed problem with IntInf.fmt (sign would show up on the right instead
817 :     of on the left for BIN, OCT, and HEX).
818 :    
819 :     ----------------------------------------------------------------------
820 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
821 : mblume 1464 Date: 2004/03/04 11:25:00 CST
822 :     Tag: blume-20040304-symlinks
823 :     Description:
824 :    
825 :     Fixed problem with installer script (unix only) where bin/ml-yacc and
826 :     friends pointed (via symlinks) to absolute locations instead of just
827 :     .run-sml. This was reported by Vesa A Norrman.
828 :    
829 :     ----------------------------------------------------------------------
830 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
831 : mblume 1455 Date: 2004/02/13 14:50:00 CST
832 :     Tag: Release_110_45
833 :     Description:
834 :    
835 :     New working version (110.45). New bootfiles.
836 :    
837 :     ----------------------------------------------------------------------
838 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
839 : mblume 1448 Date: 2004/01/26 15:15:15 CST
840 :     Tag: blume-20040126-toplevel
841 :     Description:
842 :    
843 :     Improved handling of exceptions at the interactive toplevel.
844 :    
845 :     ----------------------------------------------------------------------
846 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
847 :     Date: 2004/01/26 11:25:00
848 : mblume 1446 Tag: blume-20040126-app
849 :     Description:
850 :    
851 :     Type of top-level "app" corrected.
852 : mblume 1447 Added code for setting vp_limitPtrMask to Win32-specific runtime.
853 : mblume 1446
854 :     ----------------------------------------------------------------------
855 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
856 : mblume 1427 Date: 2003/11/18 17:10 CST
857 :     Tag: blume-20031118-basis-fiddle
858 :     Description:
859 :    
860 :     - changed Timer interface to what might become the spec
861 :     - POSIX_FLAGS -> BIT_FLAGS according to spec
862 :     - some other minor discrepancies wrt. spec eliminated
863 :    
864 :     ----------------------------------------------------------------------
865 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
866 : mblume 1414 Date: 2003/11/06 12:00:00 CST
867 :     Tag: Release_110_44
868 :     Description:
869 :    
870 :     New working version (110.44). New bootfiles.
871 :    
872 :     ----------------------------------------------------------------------
873 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
874 : mblume 1411 Date: 2003/11/04 11:50:00 CST
875 :     Tag: blume-20031104-move-libraries
876 :     Description:
877 :    
878 :     Eliminated the "dont_move_libraries" directive in config/targets.
879 :     (The mechanism was broken and could not be fixed easily. Moreover,
880 :     there does not seem to be any reason not to move all libraries into
881 :     lib during installation. I originally implemented this directive as a
882 :     backward-compatibility feature when I first introduced the new CM.
883 :     Now that things have been stable for a long time and going back to the
884 :     old CM is not an option, there is no reason to keep it around.)
885 :    
886 :     ----------------------------------------------------------------------
887 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
888 : mblume 1409 Date: 2003/11/03 16:00:00 CST
889 :     Tag: blume-20031103-installdir
890 :     Description:
891 :    
892 :     Made installer honor INSTALLDIR variable again. (Thanks to Chris
893 :     Richards for pointing out the problem and providing the solution.)
894 :    
895 :     ----------------------------------------------------------------------
896 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
897 : mblume 1400 Date: 2003/10/01 17:05:00 CDT
898 :     Tag: blume-20031001-lal-mlrisc
899 :     Description:
900 :    
901 :     MLRISC bug fix from Lal.
902 :    
903 :     ----------------------------------------------------------------------
904 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
905 : mblume 1399 Date: 2003/09/30 16:10:00 CDT
906 :     Tag: blume-20030930-primio-bat
907 : mblume 1398 Description:
908 :    
909 :     1. Added openVector, nullRd, and nullWr to PRIM_IO.
910 :     2. Improved .bat files (for Win32 port) to make things work under Win95.
911 :     (thanks to Aaron S. Hawley for this one)
912 :    
913 :     ----------------------------------------------------------------------
914 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
915 : mblume 1395 Date: 2003/09/26 16:05:00 CDT
916 :     Tag: blume-20030926-wrappriv
917 :     Description:
918 :    
919 :     Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
920 :    
921 :     ----------------------------------------------------------------------
922 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
923 : mblume 1394 Date: 2003/09/26 15:00:00 CDT
924 :     Tag: blume-20030926-110_43_3
925 :     Description:
926 :    
927 :     - additional cleanup
928 :     - version number bump, NEW BOOTFILES
929 :    
930 :     ----------------------------------------------------------------------
931 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
932 : mblume 1393 Date: 2003/09/26 12:00:00 CDT
933 :     Tag: blume-20030926-ppautoload
934 :     Description:
935 :    
936 :     I modified the read-eval-print loop so that the autoloader gets
937 :     invoked whenever the prettyprinter tries to look up a symbol that
938 :     is not currently defined in the toplevel environment but which
939 :     appears in CM's autoload registry. As a result, we see far fewer of
940 :     those ?.Foo.Bar.xxx names in the prettyprinter's output.
941 :    
942 :     In addition to this I tried to clean up some pieces of the Basis
943 :     implementation (e.g., Socket, Word8Array) in order to prevent other
944 :     instances of these ?.Foo.Bar.xxx names from being printed.
945 :    
946 :     The mechanism that picks names for types still needs some work, though.
947 :     (Right now it seems that if there is a type A.t which is defined to
948 : mblume 1394 be B.u, but B is unavailable at toplevel, then A.t gets printed as
949 :     "?.B.u" although the perhaps more sensible solution would be to use
950 : mblume 1393 "A.t" in this case. In other words, the prettyprinter should follow
951 :     a chain of DEFtycs not farther than there are corresponding toplevel
952 :     names in the current environment.)
953 :    
954 :     ----------------------------------------------------------------------
955 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
956 : mblume 1391 Date: 2003/09/24 16:31:00 CDT
957 :     Tag: blume-20030924-installer
958 :     Description:
959 :    
960 :     Another installer tweak: All the ML code for the installer is now
961 :     compiled during CMB.make and put into a little library called
962 :     $smlnj/installer.cm. The installation then simply invokes
963 :    
964 :     sml -m $smlnj/installer.cm
965 :    
966 :     and everything happens automagically.
967 :    
968 :     Win32: ML code senses value of environment variable SMLNJ_HOME.
969 :     Unix: ML code senses values of environment variables ROOT, CONFIGDIR,
970 :     and BINDIR.
971 :    
972 :     The new scheme guarantees that the ML code responsible for the installation
973 :     is in sync with the APIs of the main system. Also, the installer is
974 :     somewhat faster because the installer script is precompiled.
975 :    
976 :     ----------------------------------------------------------------------
977 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
978 : mblume 1390 Date: 2003/09/24 15:35:00 CDT
979 :     Tag: blume-20030924-synsock
980 :     Description:
981 :    
982 :     Added a signature SYNCHRONOUS_SOCKET to basis.cm. This is like SOCKET
983 :     but excludes all non-blocking operations. Defined SOCKET (in Basis)
984 :     and CML_SOCKET in terms of SYNCHRONOUS_SOCKET. Removed superfluous
985 :     implementations of non-blocking operations from CML's Socket
986 :     structure.
987 :    
988 :     ----------------------------------------------------------------------
989 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
990 : mblume 1389 Date: 2003/09/24 15:10:05 CDT
991 :     Tag: blume-20030924-sockets
992 :     Description:
993 :    
994 :     1. Fixed SOCKET API and implementation to match Basis spec.
995 :     This required changing the internal representation of sockets to one
996 :     that remembers (for each socket file descriptor) whether it is currently
997 :     blocking or non-blocking. This state is maintained lazily (i.e., a system
998 :     call is made only if the state actually needs to change).
999 :    
1000 :     2. OS-specific details of sockets were moved into separate files, thus
1001 :     making it possible to unify the bulk of the socket implementations
1002 :     between Unix and Win32.
1003 :    
1004 :     3. CML's socket API changed accordingly.
1005 :     (Note that we need to remove non-blocking functions from this API
1006 :     since they are redundant in the case of CML!)
1007 :    
1008 :     4. CML's socket implementation now makes use of non-blocking functions
1009 :     provided by Basis, thus removing all OS-dependent code from this part
1010 :     of CML.
1011 :    
1012 :     5. Changed Real64.precision from 52 to 53. Minor cleanup in Real64 code.
1013 :    
1014 :     ----------------------------------------------------------------------
1015 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1016 : mblume 1387 Date: 2003/09/22 12:10:00 CDT
1017 : mblume 1388 Tag: blume-20030922-110_43_2
1018 : mblume 1387 Description:
1019 :    
1020 :     Made a new interim version and bootfiles for developer's bootstrapping
1021 :     convenience.
1022 :    
1023 :     110.43.2 -- NEW BOOTFILES
1024 :    
1025 :     ----------------------------------------------------------------------
1026 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1027 : mblume 1385 Date: 2003/09/19 15:55:00 CDT
1028 :     Tag: blume-20030919-cmdir
1029 :     Description:
1030 :    
1031 :     1. new-install.sh -> install.sh
1032 :     2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
1033 :     3. tweaked installer so that another name instead of .cm can be chosen
1034 :     at install time (by setting the CM_DIR_ARC environment variable
1035 :     during installation); once installation is complete, the name is
1036 :     fixed
1037 :    
1038 :     ----------------------------------------------------------------------
1039 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1040 : mblume 1384 Date: 2003/09/18 16:00:00 CDT
1041 :     Tag: blume-20030918-110_43_1
1042 :     Description:
1043 :    
1044 :     Made a new interim version and bootfiles for developer's bootstrapping
1045 :     convenience.
1046 :    
1047 :     110.43.1 -- NEW BOOTFILES
1048 :    
1049 :     ----------------------------------------------------------------------
1050 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1051 : mblume 1383 Date: 2003/09/18 15:20:00 CDT
1052 :     Tag: blume-20030918-misc
1053 :     Description:
1054 :    
1055 :     1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
1056 :     this seems to be controversial at the moment) and used those in
1057 :     Posix.ProcEnv.times.
1058 :    
1059 :     2. Added Time.{from,to}Nanoseconds to Time.
1060 :    
1061 :     3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
1062 :     For example, fromLargeInt never needs to look at more than 3 "big
1063 :     digits" to get its 53 bits of precision.
1064 :    
1065 :     ----------------------------------------------------------------------
1066 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
1067 : mblume 1381 Date: 2003/09/17 16:30:00 CDT
1068 :     Tag: blume-20030917-real32-slices
1069 :     Description:
1070 :    
1071 :     Added an entry to the primitive environment
1072 :     (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
1073 :     added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
1074 :    
1075 :     Removed some of the "magic" constants in real64.sml and replaced them
1076 :     with code that generates these values from their corresponding
1077 :     integer counterparts.
1078 :    
1079 :     Made all(?) the slice-related changes to the Basis and made everything
1080 :     compile again...
1081 :    
1082 :     ----------------------------------------------------------------------
1083 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1084 : mblume 1375 Date: 2003/09/15 17:45:00 CDT
1085 :     Tag: blume-20030915-rbase
1086 :     Description:
1087 :    
1088 :     Fixed bug in Real.fromLargeInt.
1089 :    
1090 :     ----------------------------------------------------------------------
1091 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1092 : mblume 1369 Date: 2003/09/13 18:11:00 CDT
1093 :     Tag: blume-20030913-libinstall
1094 :     Description:
1095 :    
1096 :     Minor bugfix in config/libinstall (set anchor with path to
1097 :     standalone tool after installing it, otherwise libraries that
1098 :     need ml-lex or ml-yacc won't compile the first time the installer
1099 :     runs).
1100 :    
1101 :     ----------------------------------------------------------------------
1102 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1103 : mblume 1368 Date: 2003/09/12 11:45:00 CDT
1104 :     Tag: blume-20030912-various
1105 :     Description:
1106 :    
1107 :     - fixed bug in Real.toLargeInt
1108 :     - fixed bug in Posix.ProcEnv.times
1109 :     - changed inputLine functions to return an option
1110 :     - minor installer improvements / bugfixes
1111 :     - changed default @SMLalloc parameter for x86/celeron to 64k
1112 :    
1113 :     ----------------------------------------------------------------------
1114 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
1115 : mblume 1356 Date: 2003/09/09 22:00:00 CDT
1116 :     Tag: Release_110_43
1117 :     Description:
1118 :    
1119 :     New working release 110.43. New bootfiles.
1120 :    
1121 :     ----------------------------------------------------------------------
1122 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1123 : mblume 1354 Date: 2003/09/09 19:20:00 CDT
1124 :     Tag: blume-20030909-installer
1125 :     Description:
1126 :    
1127 :     Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
1128 :     Modified config/install.bat to take advantage of it. Also modified
1129 :     config/install.sh (and called it config/new-install.sh) to take advantage
1130 :     of it on Unix systems. (The SML code is (supposed to be) platform-
1131 :     independent.)
1132 :    
1133 :     The installer can now install everything under Win32
1134 :     as well as under *nix as long as it compiles.
1135 :    
1136 :     Other changes:
1137 :    
1138 :     - made CML compile again under Win32
1139 :     - made eXene compile under Win32 (by providing a fake structure UnixSock
1140 :     and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
1141 :     - fixed a bug in nowhere: it assumed that type OS.Process.status is the
1142 :     same as type int; under Win32 it isn't
1143 :     - fixed some slice-related problems in the win32-specific parts of CML
1144 :     - added a functor argument "sameVol" to os-path-fn.sml in the Basis
1145 :     (under Win32, the volume name is case-insensitive, and the
1146 :     OS.Path code compares volume names for equality)
1147 :    
1148 :     ----------------------------------------------------------------------
1149 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1150 : mblume 1353 Date: 2003/09/08 11:55:00 CDT
1151 :     Tag: blume-20030908-fullpath
1152 :     Description:
1153 :    
1154 :     Made Win32 version of OS.FileSys.fullPath return current directory
1155 :     when given an empty string. This is what the spec says, and incidentally,
1156 :     CM depends on it. (CM otherwise goes into an infinite loop in certain
1157 :     cases when presented with the name of a non-existing .cm file.)
1158 :    
1159 :     ----------------------------------------------------------------------
1160 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1161 : mblume 1350 Date: 2003/09/04 16:30:00 CDT
1162 : mblume 1352 Tag: blume-20030905-slices-etc
1163 : mblume 1350 Description:
1164 :    
1165 :     1. Changed interface to vectors and arrays in Basis to match
1166 :     (draft) Basis spec.
1167 :     2. Added signatures and implementations of slices according to
1168 :     Basis spec.
1169 :     3. Edited source code throughout the system to make it compile again
1170 :     under 1. and 2. (In some cases code had to be added to have it
1171 :     match the new signatures.)
1172 :     4. MLRISC should be backward-compatible: the copies of the originals
1173 :     of files that needed to change under 3. were retained, the .cm files
1174 :     check the compiler version number and use old versions when
1175 :     appropriate.
1176 :     5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
1177 :     dirstream -> string option (in accordance with Basis spec).
1178 :     6. When generating code that counts lines, ml-lex used function
1179 :     CharVector.foldli, taking advantage of its old interface.
1180 :     This has been replaced with the corresponding code from
1181 :     CharVectorSlice. (html-lex must be re-lexed!)
1182 :     7. BitArray in smlnj-lib/Util has been extended/modified to match the
1183 :     new MONO_ARRAY signature. (Do we need BitArraySlice?)
1184 :     8. Removed temporary additions (fromInternal, toInternal) from the
1185 :     (now obsolete) IntInf in smlnj-lib/Util.
1186 :     9. Cleaned up structure Byte.
1187 :     10. Added localOffset, scan, and fromString to Date (according to spec).
1188 :     Cleaned/corrected implementation of Date.
1189 :     (Still need to check for correctness; implement better canonicalizeDate.)
1190 :     11. Added "scan" to signature IEEE_REAL.
1191 :     12. Some improvements to IntInf [in particular: efficiency-hack for
1192 :     mod and rem when second operand is 2 (for parity checks).]
1193 :     13. Changed representation of type Time.time, using a single IntInf.int
1194 :     value counting microseconds. This considerably simplified the
1195 :     implementation of structure Time. We now support negative time
1196 :     values; scan and fromString handle signs.
1197 :     14. Functor PrimIO now takes two additional arguments (VectorSlice and
1198 :     ArraySlice).
1199 :    
1200 :     ----------------------------------------------------------------------
1201 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1202 : mblume 1347 Date: 2003/08/28 17:00:00 CDT
1203 :     Tag: blume-20030828-intinf
1204 :     Description:
1205 :    
1206 :     This is a major update which comes with a version number bump
1207 :     (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
1208 :     and an implementation of IntInf in the Basis.
1209 :    
1210 :     There are a fairly large number of related changes and updates throughout
1211 :     the system:
1212 :    
1213 :     Basis:
1214 :     - Implemented IntInf.
1215 :     - Made LargeInt a projection of IntInf (by filtering through INTEGER).
1216 : mblume 1348 - Added some missing Real64 operations, most notably Real.toLargeInt.
1217 : mblume 1347 - Added FixedInt as a synonym for Int32.
1218 :    
1219 :     compiler:
1220 :     * Added support for a built-in intinf type.
1221 :     - literals
1222 :     - pattern matching
1223 :     - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
1224 :     - overloading on literals and operations
1225 :    
1226 :     This required adding a primitive type intinf, some additional
1227 :     primops, and implementations for several non-trivial intinf
1228 :     operations in Core. (The intinf type is completely abstract
1229 :     to the compiler; all operations get delegated back to the Core.)
1230 :    
1231 :     * Intinf equality is handled by polyequal. However, the compiler
1232 :     does not print its usual warning in this case (since polyequal
1233 :     is the right thing to do there).
1234 :    
1235 :     * Improved the organization of structure InlineT.
1236 :    
1237 :     * A word about conversion primops:
1238 :     If conversions involving intinf do not cancel out during
1239 : mblume 1348 CPS contract, then the compiler must insert calls to Core functions.
1240 : mblume 1347 Since all core access must be resolved already during the FLINT
1241 :     translate phase, it would be too late a the time of CPS contract
1242 : mblume 1348 to add new Core calls. For this reason, conversion primops
1243 : mblume 1347 for intinf carry two arguments: 1. the numeric argument that
1244 :     they are supposed to convert, and 2. the Core function that
1245 :     can help with this conversion if necessary. If CPS contract
1246 : mblume 1348 eliminates a primop, then the associated Core function becomes
1247 :     dead and goes away. Intinf conversion primops that do not get
1248 :     eliminated by CPS contract get rewritten into calls of their
1249 :     core functions by a separate, new phase.
1250 : mblume 1347
1251 :     interactive system:
1252 :     - Control.Print.intinfDepth controls max length of intinf constants
1253 :     being printed. (Analogous to Control.Print.stringDepth.)
1254 :     - Cleanup in printutil and pputil: got rid of unused stuff and
1255 :     duplicates; replaced some of the code with code that makes better
1256 :     use of library functionality.
1257 :    
1258 :     CM:
1259 :     Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
1260 :     are no longer silent.
1261 :    
1262 :     CKIT:
1263 :     Fixed mismatched uses of Int32 and LargeInt. I always decided
1264 :     in favor of LargeInt -- which is now the same as IntInf.
1265 :     CKIT-knowledgable people should check whether this is what's
1266 :     intended and otherwise change things back to using Int32 or
1267 :     FixedInt.
1268 :    
1269 :     Throughout the code:
1270 : mblume 1348 Started using IntInf.int literals and built-in operations
1271 : mblume 1347 (e.g., comparison with 0) where this seems appropriate.
1272 :    
1273 :    
1274 :     ----------------------------------------------------------------------
1275 : macqueen 1343 Name: Dave MacQueen (dbm@cs.uchicago.edu)
1276 :     Date: 2003/08/13 11:36:00 CDT
1277 :     Tag: dbm-20030813-mcz-merge1
1278 :     Description:
1279 :    
1280 :     Merging changes from the mcz-branch development branch into trunk.
1281 :     These changes involve replacement of the emulated old prettyprinter
1282 :     interface with direct use of the SML/NJ Lib PP library, and fixing
1283 :     of a couple of bugs (895, 1186) relating to error messages. A new
1284 :     prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
1285 :     has been added.
1286 :    
1287 :     ----------------------------------------------------------------------
1288 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1289 : mblume 1342 Date: 2003/08/11 15:45:00 CDT
1290 :     Tag: blume-20030811-windows
1291 :     Description:
1292 :    
1293 :     Version number bumped to 110.42.9. NEW BOOTFILES!!!
1294 :    
1295 :     http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
1296 :    
1297 :     This patch restores SML/NJ's ability to run under win32. There are a
1298 :     number of changes, including fixes for several bugs that had gone
1299 :     unnoticed until now:
1300 :    
1301 :     - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
1302 :     trying to run the win32 version from within cygwin.)
1303 :    
1304 :     - There are a number of simple .bat scripts that substitute for their
1305 :     corresponding Unix shell-scripts. (See below.)
1306 :    
1307 :     - The internals of ml-build have been modified slightly. The main
1308 :     difference is that instead of calling ".link-sml" (or link-sml.bat)
1309 :     using OS.Process.system, the ML process delegates this task back
1310 :     to the script. Otherwise problems arise in mixed environments such
1311 :     as Cygwin where scripts look and work like Unix scripts, but
1312 :     where OS.Process.system cannot run them.
1313 :    
1314 :     - In CM, the srcpath pickler used native pathname syntax -- which
1315 :     is incorrect in the case of cross-compilation. The new pickle format
1316 :     is independent of platform-specific naming conventions.
1317 :    
1318 :     - Path configuration files (such as lib/pathconfig) can now choose
1319 :     between native and standard syntax. Placing a line of the form
1320 :    
1321 :     standard!
1322 :    
1323 :     into the file causes all subsequent paths to be interpreted using
1324 :     CM standard pathname syntax (= Unix conventions); a line
1325 :    
1326 :     native!
1327 :    
1328 :     switches back to native style. This was needed so that
1329 :     path config files can be written portably, see src/system/pathconfig.
1330 :    
1331 :     - Runtime system:
1332 :    
1333 :     - win32-filesys.c: get_file_time and set_file_time now
1334 :     access modification time, not creation time.
1335 :    
1336 :     - I/O code made aware of new array representation.
1337 :    
1338 :     - Bug fixes in X86.prim.masm.
1339 :    
1340 :     - src/system/makeml made aware of win32. (For use under cygwin
1341 :     and other Unix-environments for windows.)
1342 :    
1343 :     - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
1344 :     which caused BinIO.inputAll to fail consistently.
1345 :    
1346 :     .bat scripts:
1347 :    
1348 :     Windows .bat scripts assume that SMLNJ_HOME is defined.
1349 :    
1350 :     - sml.bat, ml-yacc.bat, ml-lex.bat: Driver scripts for standalone
1351 :     applications (sml, ml-yacc, ml-lex).
1352 :     - ml-build.bat: analogous to ml-build.
1353 :     - config\install.bat: Analogous to config/install.sh. This requires
1354 :     that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
1355 :     (nmake etc. must be on the path, and vcvars32 must have been run.)
1356 :     Moreover, sources for ml-lex and ml-yacc need to exist under src,
1357 :     and the bootfile hierarchy must have been unpacked under
1358 :     sml.boot.x86-win32.
1359 :     The script is very primitive and does a poor job at error checking.
1360 :     It only installs the base system, ml-lex, and ml-yacc. No other
1361 :     libraries are being installed (i.e., you get only those that
1362 :     are part of the compiler.)
1363 :     - link-sml.bat: analogous to .link-sml, but not currently used
1364 :    
1365 :     Unrelated bug fixes:
1366 :    
1367 :     - ml-nlffigen now exports structures ST_* corresponding to incomplete
1368 :     types.
1369 :     - Added getDevice to PP/src/pp-debug-fn.sml. (Would not compile
1370 :     otherwise.)
1371 :    
1372 :     ----------------------------------------------------------------------
1373 : macqueen 1337 Name: Dave MacQueen (macqueen@cs.uchicago.edu)
1374 :     Date: 2003/06/17
1375 :     Tag: macqueen-20030617-bug895
1376 :     Description:
1377 :    
1378 :     Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
1379 :     Tag will be used for new development branch (mcz-branch) for
1380 :     use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
1381 :    
1382 :     ----------------------------------------------------------------------
1383 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1384 : mblume 1335 Date: 2003/05/27 16:55:00 CDT
1385 :     Tag: blume-20030527-polyeq
1386 :     Description:
1387 :    
1388 :     Tried to eliminated most cases of polymorphic equality.
1389 :    
1390 :     ----------------------------------------------------------------------
1391 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1392 : mblume 1334 Date: 2003/05/21 17:45:00 CDT
1393 :     Tag: blume-20030517-complete
1394 :     Description:
1395 :    
1396 :     Two changes:
1397 :    
1398 :     1. Added a flag for controlling whether non-exhaustive bindings will
1399 :     be treated as errors (default is false).
1400 :     2. Cleaned up the *entire* source tree so that CMB.make goes through
1401 :     without a single non-exhaustive match- or bind warning.
1402 :    
1403 :     ----------------------------------------------------------------------
1404 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
1405 : mblume 1332 Date: 2003/05/17 10:20:00 CDT
1406 :     Tag: blume-20030517-absyn
1407 :     Description:
1408 :    
1409 :     1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
1410 :    
1411 :     This mainly affects the quality of error messages. However, some
1412 :     of the code is now more straightforward than before. (Treatment of
1413 :     the above four constructs in translate.sml is much simpler than
1414 :     the "macro-expansion" that was going on before. Plus, the mach-
1415 :     compiler no longer gets invoked just to be able to compile an
1416 :     if-expression.)
1417 :    
1418 :     2. The ErrorMsg.Error exception is now caught and absorbed by the
1419 :     interactive loop.
1420 :    
1421 :     ----------------------------------------------------------------------
1422 : allenleung 1327 Name: Allen Leung
1423 :     Date: 2003/05/16 13:05:00 CDT
1424 :     Tag: leunga-20030516-cygwin-runtime
1425 :     Description:
1426 :    
1427 :     Ported the runtime system to cygwin, which uses the unix
1428 :     x86-unix bin files. Missing/buggy features:
1429 :    
1430 :     o getnetbyname, getnetbyaddr: these functions seem to be missing in
1431 :     the Cygwin library.
1432 :     o Ctrl-C handling may be flaky.
1433 :     o Windows system calls and Windows I/O are not supported.
1434 :    
1435 :     A new set of binfiles is located at:
1436 :    
1437 :     http://www.dorsai.org/~leunga/boot.x86-unix.tgz
1438 :    
1439 :     This is only needed for bootstrapping the cygwin version of smlnj.
1440 :     Other x86 versions can use the existing binfiles.
1441 :    
1442 :     ----------------------------------------------------------------------
1443 : mblume 1317 Name: Matthias Blume
1444 :     Date: 2003/04/08 15:42:00 CDT
1445 :     Tag: blume-20030408-listpair
1446 :     Description:
1447 :    
1448 :     1. Added a target 'mlrisc' to installer.
1449 :    
1450 :     2. Added missing elements to structure ListPair.
1451 :    
1452 :     ----------------------------------------------------------------------
1453 : leunga 1296 Name: Allen Leung
1454 :     Date: 2003/01/07 10:40:00 EST
1455 :     Tag: leunga-20030107-int-rem
1456 :     Description:
1457 :    
1458 :     Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
1459 :     The arguments to the SUBL instruction were swapped.
1460 :    
1461 :     ----------------------------------------------------------------------
1462 : blume 1229 Name: Matthias Blume
1463 : blume 1294 Date: 2002/12/12 16:25:00 EST
1464 :     Tag: blume-20021212-risc-ra
1465 :     Description:
1466 :    
1467 :     Fixed a serious bug in the rewrite code for FP spilling/reloading that
1468 :     sent the RA into an infinite loop when floating point registers get
1469 :     spilled. (Because of this bug, e.g., nucleic stopped compiling between
1470 :     110.37 and 110.38.)
1471 :     There was another set of potential problems related to the handling of
1472 :     MLRISC annotations (but those did not yet cause real problems, apparently).
1473 :    
1474 :     ----------------------------------------------------------------------
1475 :     Name: Matthias Blume
1476 : blume 1291 Date: 2002/12/06 22:40:00 EST
1477 :     Tag: blume-20021206-cm-fileid
1478 :     Description:
1479 :    
1480 :     Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
1481 :     This fixes the problem of CM getting confused by files that suddenly
1482 :     change their identity (e.g., by getting unlinked and recreated by some
1483 :     text editor such as vi). There might be a better/cheaper/cleaner way
1484 :     of doing this, but for now this will have to do.
1485 :    
1486 :     ----------------------------------------------------------------------
1487 :     Name: Matthias Blume
1488 : blume 1288 Date: 2002/10/28 09:50:00 EST
1489 :     Tag: blume-20021028-typecheck
1490 :     Description:
1491 :    
1492 :     Exported structure Typecheck from $smlnj/viscomp/core.cm.
1493 :    
1494 :     ----------------------------------------------------------------------
1495 :     Name: Matthias Blume
1496 : blume 1282 Date: 2002/10/17 09:10:00 EDT
1497 : blume 1279 Tag: Release_110_42
1498 :     Description:
1499 :    
1500 : blume 1282 In good old tradition, there has been a slight hiccup so that we have
1501 :     to patch 110.42 after the fact. The old release tag has been replaced
1502 :     (see below).
1503 :    
1504 :     The change solves a problem with two competing approaches the
1505 :     configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
1506 :     each other's way.
1507 :    
1508 :     This change only affects the runtime system code and the installer script.
1509 :     (No new bootfiles.)
1510 :    
1511 :     ----------------------------------------------------------------------
1512 :     Name: Matthias Blume
1513 :     Date: 2002/10/16 12:00:00 EDT
1514 :     Tag: Release_110_42_removed
1515 :     Description:
1516 :    
1517 : blume 1279 New working release. New bootfiles.
1518 :    
1519 :     ----------------------------------------------------------------------
1520 :     Name: Matthias Blume
1521 : blume 1273 Date: 2002/10/10 13:10:00 EDT
1522 :     Tag: blume-20021010-ppc-divs
1523 :     Description:
1524 :    
1525 :     The mltree operator DIVS must be implemented with an overflow check on
1526 :     the PPC because the hardware indicates divide-by-zero using "overflow" as
1527 :     well.
1528 :    
1529 :     ----------------------------------------------------------------------
1530 :     Name: Matthias Blume
1531 : blume 1261 Date: 2002/07/23 11:45:00
1532 :     Tag: blume-20020723-smlnj-home
1533 :     Description:
1534 :    
1535 :     Sml now senses the SMLNJ_HOME environment variable. If this is set,
1536 :     then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
1537 :     CM_PATHCONFIG is also set), the path configuration file is assumed
1538 :     to be in $SMLNJ_HOME/lib/pathconfig. This way one can easily move
1539 :     the entire tree to some other place and everything will "just work".
1540 :    
1541 :     (Companion commands such as ml-build and ml-makedepend also sense this
1542 :     variable.)
1543 :    
1544 :     ----------------------------------------------------------------------
1545 :     Name: Matthias Blume
1546 : blume 1259 Date: 2002/07/12 21:19:00 EDT
1547 :     Tag: blume-20020712-liveness
1548 :     Description:
1549 :    
1550 :     Exported two useful "step" functions from liveness module (MLRISC).
1551 :    
1552 :     ----------------------------------------------------------------------
1553 :     Name: Matthias Blume
1554 : blume 1253 Date: 2002/07/05 16:00 EDT
1555 :     Tag: Release_110_41
1556 :     Description:
1557 :    
1558 :     New working release. New bootfiles.
1559 :    
1560 :     ----------------------------------------------------------------------
1561 :     Name: Matthias Blume
1562 : blume 1250 Date: 2002/07/05 10:25:00 EDT
1563 :     Tag: blume-20020705-btimp
1564 :     Description:
1565 :    
1566 :     Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
1567 :     other clients can set up backtracing support.
1568 :    
1569 :     ----------------------------------------------------------------------
1570 :     Name: Matthias Blume
1571 : blume 1249 Date: 2002/06/25 17:23:00 EDT
1572 :     Tag: blume-20020625-fpmax
1573 :     Description:
1574 :    
1575 :     Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
1576 :     case. (The sense of the isNaN test was reversed -- which made min and
1577 :     max always return their first argument.)
1578 :    
1579 :     ----------------------------------------------------------------------
1580 :     Name: Matthias Blume
1581 : blume 1240 Date: 2002/06/11
1582 :     Tag: blume-20020611-unixpath
1583 :     Description:
1584 :    
1585 :     Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
1586 :    
1587 :     ----------------------------------------------------------------------
1588 :     Name: Matthias Blume
1589 : blume 1238 Date: 2002/06/10 16:35:00 EDT
1590 :     Tag: blume-20020610-ieeereal
1591 :     Description:
1592 :    
1593 :     I back-ported my implementation of IEEEReal.fromString from the
1594 :     idlbasis-devel branch so that we can test it.
1595 :    
1596 :     Another small change is that ppDec tries to give more information
1597 :     than just "<sig>" in the case of functors. However, this code is
1598 :     broken in some mysterious way if the functor's body's signature
1599 :     has not been declared by ascription but gets inferred from the
1600 :     implementation. This needs fixing...
1601 :    
1602 :     ----------------------------------------------------------------------
1603 :     Name: Matthias Blume
1604 : blume 1229 Date: 2002/05/31
1605 :     Tag: blume-20020531-btrace-mode
1606 :     Description:
1607 :    
1608 :     Resurrected SMLofNJ.Internals.BTrace.mode. (It accidentally fell by
1609 :     the wayside when I switched over to using Controls everywhere.)
1610 :    
1611 :     ----------------------------------------------------------------------
1612 : george 1222 Name: Lal George
1613 :     Date: 2002/05/23 12:21:40 EDT
1614 :     Tag: george-20020523-visual-labels
1615 :     Description:
1616 :    
1617 :     Labels are now displayed in the graphical output to make
1618 :     the fall-through and target blocks obvious.
1619 :    
1620 :     ----------------------------------------------------------------------
1621 : blume 1204 Name: Matthias Blume
1622 : blume 1220 Date: 2002/05/22 11:03:00 EDT
1623 :     Tag: blume-20020522-shrink
1624 :     Description:
1625 :    
1626 :     John tweaked yesterday's fix for 1131 to handle an out-of-memory
1627 :     situation that comes up when allocating huge arrays.
1628 :    
1629 :     ----------------------------------------------------------------------
1630 :     Name: Matthias Blume
1631 : blume 1215 Date: 2002/05/21 16:00:00 EDT
1632 :     Tag: Release_110_40
1633 :     Description:
1634 :    
1635 :     New working release (110.40). New bootfiles.
1636 :    
1637 :     [Also: John Reppy fixed GC bug 1131.]
1638 :    
1639 :     ----------------------------------------------------------------------
1640 :     Name: Matthias Blume
1641 : blume 1212 Date: 2002/05/21 12:35:00 EDT
1642 :     Tag: blume-20020521-cmdoc
1643 :     Description:
1644 :    
1645 :     CM documentation update.
1646 :    
1647 :     ----------------------------------------------------------------------
1648 :     Name: Matthias Blume
1649 : blume 1211 Date: 2002/05/21 10:55:00 EDT
1650 :     Tag: blume-20020521-misc
1651 :     Description:
1652 :    
1653 :     - John tweaked runtime to be silent on heap export (except when
1654 :     GC messages are on).
1655 :     - I added a few more things (cross-compiling versions of CMB) to
1656 :     config/preloads (as suggestions).
1657 :    
1658 :     ----------------------------------------------------------------------
1659 :     Name: Matthias Blume
1660 : blume 1208 Date: 2002/05/20 22:25:00 EDT
1661 :     Tag: blume-20020520-controls
1662 :     Description:
1663 :    
1664 :     - Added ControlUtil structure to control-lib.cm.
1665 :     - Use it throughout.
1666 :     - Used Controls facility to define MLRISC controls (as opposed to
1667 :     registering MLRISC control ref cells with Controls after the fact)
1668 :     - Fixed messed-up controls priorities.
1669 :    
1670 :     * Removed again all the stuff from config/preloads that one wouldn't
1671 :     be able to preload at the time the initial heap image is built.
1672 :     (Many libraries, e.g., CML, do not exist yet at this time. The
1673 :     only libraries that can be preloaded via config/preloads are those
1674 :     that come bundled with the bootfiles.)
1675 :    
1676 :     ----------------------------------------------------------------------
1677 :     Name: Matthias Blume
1678 : blume 1204 Date: 2002/05/20 10:59:00 EDT
1679 :     Tag: blume-20020520-preloads
1680 :     Description:
1681 :    
1682 :     Added a lot of commented-out suggestions for things to be included
1683 :     in config/preloads.
1684 :    
1685 :     ----------------------------------------------------------------------
1686 : leunga 1203 Name: Allen Leung
1687 :     Date: 2002/05/18 14:20:00 EDT
1688 :     Tag: leunga-20020518-mdl
1689 :     Description:
1690 :    
1691 :     o Made the mdl tool stuff compile and run again.
1692 :     o I've disabled all the stuff that depends on RTL specifications; they
1693 :     are all badly broken anyway.
1694 :    
1695 :     ----------------------------------------------------------------------
1696 : blume 1201 Name: Matthias Blume
1697 :     Date: 2002/05/17 16:49:00 EDT
1698 :     Tag: blume-20020517-controls
1699 :     Description:
1700 :    
1701 :     0. John Reppy made several modifications to the SML/NJ library.
1702 :     In particular, there is a shiny new controls-lib.cm.
1703 :    
1704 :     1. Pushed new controls interface through compiler so that everything
1705 :     compiles again.
1706 :    
1707 :     2. Added FormatComb and FORMAT_COMB to the CML version of the
1708 :     SML/NJ library (so that CML compiles again).
1709 :    
1710 :     3. Modified init scripts because XXX_DEFAULT environment variables
1711 :     are no longer with us. (Boot-time initialization is now done
1712 :     using the same environment variables that are also used for
1713 :     startup-time initialization of controls.)
1714 :    
1715 :     ----------------------------------------------------------------------
1716 : george 1192 Name: Lal George
1717 :     Date: 2002/05/15 09:20:10 EDT
1718 :     Tag: george-20020515-pseudo-op-decls
1719 :     Description:
1720 :    
1721 :     All pseudo-ops emitted before the first segment declaration
1722 :     such as TEXT, DATA, and BSS directives are assumed to be global
1723 :     declarations and are emitted first in the assembly file. This is
1724 :     useful in a number of situations where one has pseudo-ops that are not
1725 :     specific to any segment, and also works around the constraint that one
1726 :     cannot have client pseudo-ops in the TEXT segment.
1727 :    
1728 :     Because no segment is associated with these declarations it is
1729 :     an error to allocate any space or objects before the first segment
1730 :     directive and an exception will be raised. However, we cannot make
1731 :     this check for client pseudo-ops.
1732 :    
1733 :     These top level declarations are a field in the CFG graph_info.
1734 :     In theory you can continue to add to this field after the CFG has been
1735 :     built -- provided you know what you are doing;-)
1736 :    
1737 :     ----------------------------------------------------------------------
1738 : blume 1175 Name: Matthias Blume
1739 : blume 1190 Date: 2002/05/13 16:40:00 EDT
1740 :     Tag: blume-20020513-pp-etc
1741 :     Description:
1742 :    
1743 :     A few minor bugfixes:
1744 :    
1745 :     - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
1746 :     (Bogus printouts for redefined bindings still occur. Compiler
1747 :     bug should no longer occur now. We need to redo the prettyprinter
1748 :     from scratch.)
1749 :    
1750 :     - CM pathname printer now also adds escape sequences for ( and )
1751 :    
1752 :     - commend and docu fixes for ml-nlffi
1753 :    
1754 :     ----------------------------------------------------------------------
1755 :     Name: Matthias Blume
1756 : blume 1189 Date: 2002/05/10 16:40:00 EDT
1757 :     Tag: blume-20020510-erg-textio
1758 :     Description:
1759 :    
1760 :     Applied the following bugfix provided by Emden Gansner:
1761 :    
1762 :     Output is corrupted when outputSubstr is used rather than output.
1763 :    
1764 :     The problem occurs when a substring
1765 :    
1766 :     ss = (s, dataStart, dataLen)
1767 :    
1768 :     where dataStart > 0, fills a stream buffer with avail bytes left.
1769 :     avail bytes of s, starting at index dataStart, are copied into the
1770 :     buffer, the buffer is flushed, and then the remaining dataLen-avail
1771 :     bytes of ss are copied into the beginning of the buffer. Instead of
1772 :     starting this copy at index dataStart+avail in s, the current code
1773 :     starts the copy at index avail.
1774 :    
1775 :     Fix:
1776 :     In text-io-fn.sml, change line 695 from
1777 :     val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
1778 :     to
1779 :     val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
1780 :    
1781 :     ----------------------------------------------------------------------
1782 :     Name: Matthias Blume
1783 : blume 1186 Date: 2002/04/12 13:55:00 EDT
1784 :     Tag: blume-20020412-assyntax
1785 :     Description:
1786 :    
1787 :     1. Grabbed newer assyntax.h from the XFree86 project.
1788 :     2. Fiddled with how to compile X86.prim.asm without warnings.
1789 :     3. (Very) Minor cleanup in CM.
1790 :    
1791 :     ----------------------------------------------------------------------
1792 :     Name: Matthias Blume
1793 : blume 1185 Date: 2002/04/01 (no joke!) 17:07:00 EST
1794 :     Tag: blume-20020401-x86div
1795 :     Description:
1796 :    
1797 :     Added full support for div/mod/rem/quot on the x86, using the machine
1798 :     instruction's two results (without clumsily recomputing the remainder)
1799 :     directly where appropriate.
1800 :    
1801 :     Some more extensive power-of-two support was added to the x86 instruction
1802 :     selector (avoiding expensive divs, mods, and muls where they can be
1803 :     replaced with cheaper shifts and masks). However, this sort of thing
1804 :     ought to be done earlier, e.g., within the CPS optimizer so that
1805 :     all architectures benefit from it.
1806 :    
1807 :     The compiler compiles to a fixed point, but changes might be somewhat
1808 :     fragile nevertheless. Please, report any strange things that you might
1809 :     see wrt. div/mod/quot/rem...
1810 :    
1811 :     ----------------------------------------------------------------------
1812 :     Name: Matthias Blume
1813 : blume 1184 Date: 2002/03/29 17:22:00
1814 :     Tag: blume-20020329-div
1815 :     Description:
1816 :    
1817 :     Fixed my broken div/mod logic. Unfortunately, this means that the
1818 :     inline code for div/mod now has one more comparison than before.
1819 :     Fast paths (quotient > 0 or remainder = 0) are not affected, though.
1820 :     The problem was with quotient = 0, because that alone does not tell
1821 :     us which way the rounding went. One then has to look at whether
1822 :     remainder and divisor have the same sign... :(
1823 :    
1824 :     Anyway, I replaced the bootfiles with fresh ones...
1825 :    
1826 :     ----------------------------------------------------------------------
1827 :     Name: Matthias Blume
1828 : blume 1183 Date: 2002/03/29 14:10:00 EST
1829 :     Tag: blume-20020329-inlprims
1830 :     Description:
1831 :    
1832 :     NEW BOOTFILES!!! Version number bumped to 110.39.3.
1833 :    
1834 :     Primops have changed. This means that the bin/boot-file formats have
1835 :     changed as well.
1836 :    
1837 :     To make sure that there is no confusion, I made a new version.
1838 :    
1839 :    
1840 :     CHANGES:
1841 :    
1842 :     * removed REMT from mltree (remainder should never overflow).
1843 :    
1844 :     * added primops to deal with divisions of all flavors to the frontend
1845 :    
1846 :     * handled these primops all the way through so they map to their respective
1847 :     MLRISC support
1848 :    
1849 :     * used these primops in the implementation of Int, Int32, Word, Word32
1850 :    
1851 :     * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
1852 :    
1853 :     * parameterized INLMIN, INLMAX, and INLABS by a numkind
1854 :    
1855 :     * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
1856 :     floating point
1857 :    
1858 :     * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
1859 :     and Real (but Real.abs maps to a separate floating-point-only primop)
1860 :    
1861 :    
1862 :     TODO items:
1863 :    
1864 :     * Hacked Alpha32 instruction selection, disabling the selection of REMx
1865 :     instructions because the machine instruction encoder cannot handle
1866 :     them. (Hppa, PPC, and Sparc instruction selection did not handle
1867 :     REM in the first place, and REM is supported by the x86 machine coder.)
1868 :    
1869 :     * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
1870 :     selection phase. (The two can be streamlined because the hardware
1871 :     delivers both quotient and remainder at the same time anyway.)
1872 :    
1873 :     * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
1874 :     (Currently the behavior is inconsistent both across architectures and
1875 :     wrt. the draft Basis spec.)
1876 :    
1877 :     * Word8 should eventually be handled natively, too.
1878 :    
1879 :     * There seems to be one serious bug in mltree-gen.sml. It appears, though,
1880 :     as if there currently is no execution path that could trigger it in
1881 :     SML/NJ. (The assumptions underlying functions arith and promotable do not
1882 :     hold for things like multiplication and division.)
1883 :    
1884 :     ----------------------------------------------------------------------
1885 :     Name: Matthias Blume
1886 : blume 1181 Date: 2002/03/27 16:27:00 EST
1887 :     Tag: blume-20020327-mlrisc-divisions
1888 :     Description:
1889 :    
1890 :     Added support for all four division operations (ML's div, mod, quot,
1891 :     and rem) to MLRISC. In the course of doing so, I also rationalized
1892 :     the naming (no more annoying switch-around of DIV and QUOT), by
1893 :     parameterizing the operation by div_rounding_mode (which can be either
1894 :     DIV_TO_ZERO or DIV_TO_NEGINF).
1895 :    
1896 :     The generic MLTreeGen functor takes care of compiling all four
1897 :     operations down to only round-to-zero div.
1898 :    
1899 :     Missing pieces:
1900 :    
1901 :     * Doing something smarter than relying on MLTreeGen on architectures
1902 :     like, e.g., the x86 where hardware division delivers both quotient and
1903 :     remainder at the same time. With this, the implementation of the
1904 :     round-to-neginf operations could be further streamlined.
1905 :    
1906 :     * Remove inlining support for div/mod/rem from the frontend and replace it
1907 :     with primops that get carried through to the backend. Do this for all
1908 :     int and word types.
1909 :    
1910 :     ----------------------------------------------------------------------
1911 :     Name: Matthias Blume
1912 : blume 1180 Date: 2002/03/25 17:25:00 EST
1913 :     Tag: blume-20020325-divmod
1914 :     Description:
1915 :    
1916 :     I improved (hopefully without breaking them) the implementation of Int.div,
1917 :     Int.mod, and Int.rem. For this, the code in translate.sml now takes
1918 :     advantage of the following observations:
1919 :    
1920 :     Let q = x quot y r = x rem y
1921 :     d = x div y m = x mod y
1922 :    
1923 :     where "quot" is the round-to-zero version of integer division that
1924 :     hardware usually provides. Then we have:
1925 :    
1926 :     r = x - q * y where neither the * nor the - will overflow
1927 :     d = if q >= 0 orelse x = q * y then q else q - 1
1928 :     where neither the * nor the - will overflow
1929 :     m = if q >= 0 orelse r = 0 then r else r + y
1930 :     where the + will not overflow
1931 :    
1932 :     This results in substantial simplification of the generated code.
1933 :     The following table shows the number of CFG nodes and edges generated
1934 :     for
1935 :     fun f (x, y) = x OPER y
1936 :     (* with OPER \in div, mod, quot, rem *)
1937 :    
1938 :    
1939 :     OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
1940 :     --------------------------------------------------------
1941 :     div | 24 | 39 | 12 | 16
1942 :     mod | 41 | 71 | 12 | 16
1943 :     quot | 8 | 10 | 8 | 10
1944 :     rem | 10 | 14 | 8 | 10
1945 :    
1946 :    
1947 :     ----------------------------------------------------------------------
1948 :     Name: Matthias Blume
1949 : blume 1179 Date: 2002/03/25 22:06:00 EST
1950 :     Tag: blume-20020325-cprotobug
1951 :     Description:
1952 :    
1953 :     Fixed a bug in cproto (c prototype decoder).
1954 :    
1955 :     ----------------------------------------------------------------------
1956 :     Name: Matthias Blume
1957 : blume 1178 Date: 2002/03/25 16:00:00 EST
1958 :     Tag: blume-20020325-raw-primops
1959 :     Description:
1960 :    
1961 :     I did some cleanup to Allen's new primop code and
1962 :     replaced yesterday's bootfiles with new ones.
1963 :     (But they are stored in the same place.)
1964 :    
1965 :     ----------------------------------------------------------------------
1966 :     Name: Matthias Blume
1967 : blume 1175 Date: 2002/03/24 22:40:00 EST
1968 :     Tag: blume-20020324-bootfiles
1969 :     Description:
1970 :    
1971 :     Made the bootfiles that Allen asked for.
1972 :    
1973 :     ----------------------------------------------------------------------
1974 : leunga 1174 Name: Allen Leung
1975 :     Date: 2002/03/23 15:50:00 EST
1976 :     Tag: leunga-20020323-flint-cps-rcc-primops
1977 :     Description:
1978 :    
1979 :     1. Changes to FLINT primops:
1980 :    
1981 :     (* make a call to a C-function;
1982 :     * The primop carries C function prototype information and specifies
1983 :     * which of its (ML-) arguments are floating point. C prototype
1984 :     * information is for use by the backend, ML information is for
1985 :     * use by the CPS converter. *)
1986 :     | RAW_CCALL of { c_proto: CTypes.c_proto,
1987 :     ml_args: ccall_type list,
1988 :     ml_res_opt: ccall_type option,
1989 :     reentrant : bool
1990 :     } option
1991 :     (* Allocate uninitialized storage on the heap.
1992 :     * The record is meant to hold short-lived C objects, i.e., they
1993 :     * are not ML pointers. With the tag, the representation is
1994 :     * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
1995 :     *)
1996 :     | RAW_RECORD of {tag:bool,sz:int}
1997 :     and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
1998 :    
1999 :     2. These CPS primops are now overloaded:
2000 :    
2001 :     rawload of {kind:numkind}
2002 :     rawstore of {kind:numkind}
2003 :    
2004 :     The one argument form is:
2005 :    
2006 :     rawload {kind} address
2007 :    
2008 :     The two argument form is:
2009 :    
2010 :     rawload {kind} [ml object, byte-offset]
2011 :    
2012 :     3. RAW_CCALL/RCC now takes two extra arguments:
2013 :    
2014 :     a. The first is whether the C call is reentrant, i.e., whether
2015 :     ML state should be saved and restored.
2016 :     b. The second argument is a string argument specifying the name of
2017 :     library and the C function.
2018 :    
2019 :     These things are currently not handled in the code generator, yet.
2020 :    
2021 :     4. In CProto,
2022 :    
2023 :     An encoding type of "bool" means "ml object" and is mapped into
2024 :     C prototype of PTR. Note that "bool" is different than "string",
2025 :     even though "string" is also mapped into PTR, because "bool"
2026 :     is assigned an CPS type of BOGt, while "string" is assigned INT32t.
2027 :    
2028 :     5. Pickler/unpicker
2029 :    
2030 :     Changed to handle RAW_RECORD and newest RAW_CCALL
2031 :    
2032 :     6. MLRiscGen,
2033 :    
2034 :     1. Changed to handle the new rawload/rawstore/rawrecord operators.
2035 :     2. Code for handling C Calls has been moved to a new module CPSCCalls,
2036 :     in the file CodeGen/cpscompile/cps-c-calls.sml
2037 :    
2038 :     7. Added the conditional move operator
2039 :    
2040 :     condmove of branch
2041 :    
2042 :     to cps. Generation of this is still buggy so it is currently
2043 :     disabled.
2044 :    
2045 :     ----------------------------------------------------------------------
2046 : george 1168 Name: Lal George
2047 :     Date: 2002/03/22 14:18:25 EST
2048 : george 1171 Tag: george-20020322-cps-branch-prob
2049 : george 1168 Description:
2050 :    
2051 : george 1171 Implemented the Ball-Larus branch prediction-heuristics, and
2052 : george 1168 incorporated graphical viewers for control flow graphs.
2053 :    
2054 : george 1171 Ball-Larus Heuristics:
2055 : george 1168 ---------------------
2056 :     See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
2057 :    
2058 :     By design it uses the Dempster-Shafer theory for combining
2059 :     probabilities. For example, in the function:
2060 :    
2061 :     fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
2062 :    
2063 :     the ball-larus heuristics predicts that the n=0 is unlikely
2064 :     (OH-heuristic), and the 'then' branch is unlikely because of the
2065 :     RH-heuristic -- giving the 'then' branch an even lower combined
2066 : george 1171 probability using the Dempster-Shafer theory.
2067 : george 1168
2068 :     Finally, John Reppy's loop analysis in MLRISC, further lowers the
2069 :     probability of the 'then' branch because of the loop in the else
2070 :     branch.
2071 :    
2072 :    
2073 :     Graphical Viewing:
2074 :     ------------------
2075 :     I merely plugged in Allen's graphical viewers into the compiler. The
2076 :     additional code is not much. At the top level, saying:
2077 :    
2078 :     Control.MLRISC.getFlag "cfg-graphical-view" := true;
2079 :    
2080 :     will display the graphical view of the control flow graph just before
2081 :     back-patching. daVinci must be in your path for this to work. If
2082 :     daVinci is not available, then the default viewer can be changed
2083 :     using:
2084 :    
2085 :     Control.MLRISC.getString "viewer"
2086 :    
2087 :     which can be set to "dot" or "vcg" for the corresponding viewers. Of
2088 :     course, these viewers must be in your path.
2089 :    
2090 :     The above will display the compilation unit at the level of clusters,
2091 :     many of which are small, boring, and un-interesting. Also setting:
2092 :    
2093 :     Control.MLRISC.getInt "cfg-graphical-view_size"
2094 :    
2095 :     will display clusters that are larger than the value set by the above.
2096 :    
2097 :    
2098 :     ----------------------------------------------------------------------
2099 : blume 1159 Name: Matthias Blume
2100 :     Date: 2002/03/21 22:20:00 EST
2101 :     Tag: blume-20020321-kmp-bugfix
2102 :     Description:
2103 :    
2104 :     Changed the interface to the KMP routine in PreString and fixed
2105 :     a minor bug in one place where it was used.
2106 :    
2107 :     ----------------------------------------------------------------------
2108 : leunga 1156 Name: Allen Leung
2109 : leunga 1158 Date: 2002/03/21 20:30:00 EST
2110 :     Tag: leunga-20020321-cfg
2111 :     Description:
2112 :    
2113 :     Fixed a potential problem in cfg edge splitting.
2114 :    
2115 :     ----------------------------------------------------------------------
2116 :     Name: Allen Leung
2117 : leunga 1156 Date: 2002/03/21 17:15:00 EST
2118 :     Tag: leunga-20020321-x86-fp-cfg
2119 :     Description:
2120 :    
2121 :     1. Recoded the buggy parts of x86-fp.
2122 :    
2123 :     a. All the block reordering code has been removed.
2124 :     We now depend on the block placement phases to do this work.
2125 :    
2126 :     b. Critical edge splitting code has been simplified and moved into the
2127 :     CFG modules, as where they belong.
2128 :    
2129 :     Both of these were quite buggy and complex. The code is now much, much
2130 :     simpler.
2131 :    
2132 :     2. X86 backend.
2133 :    
2134 :     a. Added instructions for 64-bit support. Instruction selection for
2135 :     64-bit has not been committed, however, since that
2136 :     requires changes to MLTREE which haven't been approved by
2137 :     Lal and John.
2138 :    
2139 :     b. Added support for FUCOMI and FUCOMIP when generating code for
2140 :     PentiumPro and above. We only generate these instructions in
2141 :     the fast-fp mode.
2142 :    
2143 :     c. Added cases for JP and JNP in X86FreqProps.
2144 :    
2145 :     3. CFG
2146 :    
2147 :     CFG now has a bunch of methods for edge splitting and merging.
2148 :    
2149 :     4. Machine description.
2150 :    
2151 :     John's simplification of MLTREE_BASIS.fcond broke a few machine
2152 :     description things:
2153 :    
2154 :     rtl-build.{sig,sml} and hppa.mdl fixed.
2155 :    
2156 :     NOTE: the machine description stuff in the repository is still broken.
2157 :     Again, I can't put my fixes in because that involves
2158 :     changes to MLTREE.
2159 :    
2160 :     ----------------------------------------------------------------------
2161 : blume 1145 Name: Matthias Blume
2162 : blume 1155 Date: 2002/03/20 15:55:00 EST
2163 :     Tag: blume-20020320-kmp
2164 :     Description:
2165 :    
2166 :     Implemented Knuth-Morris-Pratt string matching in PreString and used
2167 :     it for String.isSubstring, Substring.isSubstring, and
2168 :     Substring.position.
2169 :    
2170 :     (Might need some stress-testing. Simple examples worked fine.)
2171 :    
2172 :     ----------------------------------------------------------------------
2173 :     Name: Matthias Blume
2174 : blume 1152 Date: 2002/03/19 16:37:00 EST
2175 :     Tag: blume-20020319-witnesses
2176 :     Description:
2177 :    
2178 :     Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
2179 :    
2180 :     This implements a generic mechanism for changing constness qualifiers
2181 :     anywhere within big C types without resorting to outright "casts".
2182 :     (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
2183 :     modify the constness at the outermost level.)
2184 :     The implementation of "convert" is based on the idea of "witness"
2185 :     values -- values that are not used by the operation but whose types
2186 :     "testify" to their applicability. On the implementation side, "convert"
2187 :     is simply a projection (returning its second curried argument). With
2188 :     cross-module inlining, it should not result in any machine code being
2189 :     generated.
2190 :    
2191 :     ----------------------------------------------------------------------
2192 :     Name: Matthias Blume
2193 : blume 1148 Date: 2002/03/15 16:40:00 EST
2194 :     Tag: blume-20020315-basis
2195 :     Description:
2196 :    
2197 :     Provided (preliminary?) implementations for
2198 :    
2199 :     {String,Substring}.{concatWith,isSuffix,isSubstring}
2200 :    
2201 :     and
2202 :    
2203 :     Substring.full
2204 :    
2205 :     Those are in the Basis spec but they were missing in SML/NJ.
2206 :    
2207 :     ----------------------------------------------------------------------
2208 :     Name: Matthias Blume
2209 : blume 1145 Date: 2002/03/14 21:30:00 EST
2210 :     Tag: blume-20020314-controls
2211 :     Description:
2212 :    
2213 :     Controls:
2214 :     ---------
2215 :    
2216 :     1. Factored out the recently-added Controls : CONTROLS stuff and put
2217 :     it into its own library $/controls-lib.cm. The source tree for
2218 :     this is under src/smlnj-lib/Controls.
2219 :    
2220 :     2. Changed the names of types and functions in this interface, so they
2221 :     make a bit more "sense":
2222 :    
2223 :     module -> registry
2224 :     'a registry -> 'a group
2225 :    
2226 :     3. The interface now deals in ref cells only. The getter/setter interface
2227 :     is (mostly) gone.
2228 :    
2229 :     4. Added a function that lets one register an already-existing ref cell.
2230 :    
2231 :     5. Made the corresponding modifications to the rest of the code so that
2232 :     everything compiles again.
2233 :    
2234 :     6. Changed the implementation of Controls.MLRISC back to something closer
2235 :     to the original. In particular, this module (and therefore MLRISC)
2236 :     does not depend on Controls. There now is some link-time code in
2237 :     int-sys.sml that registers the MLRISC controls with the Controls
2238 :     module.
2239 :    
2240 :     CM:
2241 :     ---
2242 :    
2243 :     * One can now specify the lambda-split aggressiveness in init.cmi.
2244 :    
2245 :     ----------------------------------------------------------------------
2246 : leunga 1142 Name: Allen Leung
2247 :     Date: 2002/03/13 17:30:00 EST
2248 :     Tag: leunga-20020313-x86-fp-unary
2249 :     Description:
2250 :    
2251 :     Bug fix for:
2252 :    
2253 :     > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
2254 :     > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
2255 :     > - fun f(x,(y,z)) = Real.~ y;
2256 :     > [autoloading]
2257 :     > [autoloading done]
2258 :     > fchsl (%eax), 184(%esp)
2259 :     > Error: MLRisc bug: X86MCEmitter.emitInstr
2260 :     >
2261 :     > uncaught exception Error
2262 :     > raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
2263 :    
2264 :     The problem was that the code generator did not generate any fp registers
2265 :     in this case, and the ra didn't know that it needed to run the X86FP phase to
2266 :     translate the pseudo fp instruction. This only happened with unary fp
2267 :     operators in certain situations.
2268 :    
2269 :     ----------------------------------------------------------------------
2270 : blume 1137 Name: Matthias Blume
2271 : blume 1140 Date: 2002/03/13 14:00:00 EST
2272 :     Tag: blume-20020313-overload-etc
2273 :     Description:
2274 :    
2275 :     1. Added _overload as a synonym for overload for backward compatibility.
2276 :     (Control.overloadKW must be true for either version to be accepted.)
2277 :    
2278 :     2. Fixed bug in install script that caused more things to be installed
2279 :     than what was requested in config/targets.
2280 :    
2281 :     3. Made CM aware of the (_)overload construct so that autoloading
2282 :     works.
2283 :    
2284 :     ----------------------------------------------------------------------
2285 :     Name: Matthias Blume
2286 : blume 1138 Date: 2002/03/12 22:03:00 EST
2287 :     Tag: blume-20020312-url
2288 :     Description:
2289 :    
2290 :     Forgot to update BOOT and srcarchiveurl.
2291 :    
2292 :     ----------------------------------------------------------------------
2293 :     Name: Matthias Blume
2294 : blume 1137 Date: 2002/03/12 17:30:00 EST
2295 :     Tag: blume-20020312-version110392
2296 :     Description:
2297 :    
2298 :     Yet another version number bump (because of small changes to the
2299 :     binfile format). Version number is now 110.39.2. NEW BOOTFILES!
2300 :    
2301 :     Changes:
2302 :    
2303 :     The new pid generation scheme described a few weeks ago was overly
2304 :     complicated. I implemented a new mechanism that is simpler and
2305 :     provides a bit more "stability": Once CM has seen a compilation
2306 :     unit, it keeps its identity constant (as long as you do not delete
2307 :     those crucial CM/GUID/* files). This means that when you change
2308 : blume 1145 an interface, compile, then go back to the old interface, and
2309 : blume 1137 compile again, you arrive at the original pid.
2310 :    
2311 :     There now also is a mechanism that instructs CM to use the plain
2312 :     environment hash as a module's pid (effectively making its GUID
2313 :     the empty string). For this, "noguid" must be specified as an
2314 :     option to the .sml file in question within its .cm file.
2315 :     This is most useful for code that is being generated by tools such
2316 :     as ml-nlffigen (because during development programmers tend to
2317 :     erase the tool's entire output directory tree including CM's cached
2318 :     GUIDs). "noguid" is somewhat dangerous (since it can be used to locally
2319 :     revert to the old, broken behavior of SML/NJ, but in specific cases
2320 :     where there is no danger of interface confusion, its use is ok
2321 :     (I think).
2322 :    
2323 :     ml-nlffigen by default generates "noguid" annotations. They can be
2324 :     turned off by specifying -guid in its command line.
2325 :    
2326 :     ----------------------------------------------------------------------
2327 : george 1136 Name: Lal George
2328 :     Date: 2002/03/12 12 14:42:36 EST
2329 :     Tag: george-20020312-frequency-computation
2330 :     Description:
2331 :    
2332 :     Integrated jump chaining and static block frequency into the
2333 :     compiler. More details and numbers later.
2334 : leunga 1025
2335 : george 1003 ----------------------------------------------------------------------
2336 : george 1133 Name: Lal George
2337 :     Date: 2002/03/11 11 22:38:53 EST
2338 :     Tag: george-20020311-jump-chain-elim
2339 :     Description:
2340 :    
2341 :     Tested the jump chain elimination on all architectures (except the
2342 :     hppa). This is on by default right now and is profitable for the
2343 :     alpha and x86, however, it may not be profitable for the sparc and ppc
2344 :     when compiling the compiler.
2345 :    
2346 :     The gc test will typically jump to a label at the end of the cluster,
2347 :     where there is another jump to an external cluster containing the actual
2348 :     code to invoke gc. This is to allow factoring of common gc invocation
2349 :     sequences. That is to say, we generate:
2350 :    
2351 :     f:
2352 :     testgc
2353 :     ja L1 % jump if above to L1
2354 :    
2355 :     L1:
2356 :     jmp L2
2357 :    
2358 :    
2359 :     After jump chain elimination the 'ja L1' instructions is converted to
2360 :     'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end
2361 :     up being implemented in their long form (if L2 is far away) using:
2362 :    
2363 :     jbe L3 % jump if below or equal to L3
2364 :     jmp L2
2365 :     L3:
2366 :     ...
2367 :    
2368 :    
2369 :     For large compilation units L2 may be far away.
2370 :    
2371 :    
2372 :     ----------------------------------------------------------------------
2373 : blume 1132 Name: Matthias Blume
2374 :     Date: 2002/03/11 13:30:00 EST
2375 :     Tag: blume-20020311-mltreeeval
2376 :     Description:
2377 :    
2378 :     A functor parameter was missing.
2379 :    
2380 :     ----------------------------------------------------------------------
2381 : leunga 1130 Name: Allen Leung
2382 : leunga 1131 Date: 2002/03/11 10:30:00 EST
2383 : leunga 1142 Tag: leunga-20020311-runtime-string0
2384 : leunga 1131 Description:
2385 :    
2386 :     The representation of the empty string now points to a
2387 :     legal null terminated C string instead of unit. It is now possible
2388 :     to convert an ML string into C string with InlineT.CharVector.getData.
2389 :     This compiles into one single machine instruction.
2390 :    
2391 :     ----------------------------------------------------------------------
2392 :     Name: Allen Leung
2393 : leunga 1130 Date: 2002/03/10 23:55:00 EST
2394 :     Tag: leunga-20020310-x86-call
2395 :     Description:
2396 :    
2397 :     Added machine generation for CALL instruction (relative displacement mode)
2398 :    
2399 :     ----------------------------------------------------------------------
2400 : blume 1128 Name: Matthias Blume
2401 :     Date: 2002/03/08 16:05:00
2402 :     Tag: blume-20020308-entrypoints
2403 :     Description:
2404 :    
2405 :     Version number bumped to 110.39.1. NEW BOOTFILES!
2406 :    
2407 :     Entrypoints: non-zero offset into a code object where execution should begin.
2408 :    
2409 :     - Added the notion of an entrypoint to CodeObj.
2410 :     - Added reading/writing of entrypoint info to Binfile.
2411 :     - Made runtime system bootloader aware of entrypoints.
2412 :     - Use the address of the label of the first function given to mlriscGen
2413 :     as the entrypoint. This address is currently always 0, but it will
2414 :     not be 0 once we turn on block placement.
2415 :     - Removed the linkage cluster code (which was The Other Way(tm) of dealing
2416 :     with entry points) from mlriscGen.
2417 :    
2418 :     ----------------------------------------------------------------------
2419 : leunga 1127 Name: Allen Leung
2420 :     Date: 2002/03/07 20:45:00 EST
2421 :     Tag: leunga-20020307-x86-cmov
2422 :     Description:
2423 :    
2424 :     Bug fixes for CMOVcc on x86.
2425 :    
2426 :     1. Added machine code generation for CMOVcc
2427 :     2. CMOVcc is now generated in preference over SETcc on PentiumPro or above.
2428 :     3. CMOVcc cannot have an immediate operand as argument.
2429 :    
2430 :     ----------------------------------------------------------------------
2431 : blume 1126 Name: Matthias Blume
2432 :     Date: 2002/03/07 16:15:00 EST
2433 :     Tag: blume-20020307-controls
2434 :     Description:
2435 :    
2436 :     This is a very large but mostly boring patch which makes (almost)
2437 :     every tuneable compiler knob (i.e., pretty much everything under
2438 :     Control.* plus a few other things) configurable via both the command
2439 :     line and environment variables in the style CM did its configuration
2440 :     until now.
2441 :    
2442 :     Try starting sml with '-h' (or, if you are brave, '-H')
2443 :    
2444 :     To this end, I added a structure Controls : CONTROLS to smlnj-lib.cm which
2445 :     implements the underlying generic mechanism.
2446 :    
2447 :     The interface to some of the existing such facilities has changed somewhat.
2448 :     For example, the MLRiscControl module now provides mkFoo instead of getFoo.
2449 :     (The getFoo interface is still there for backward-compatibility, but its
2450 :     use is deprecated.)
2451 :    
2452 :     The ml-build script passes -Cxxx=yyy command-line arguments through so
2453 :     that one can now twiddle the compiler settings when using this "batch"
2454 :     compiler.
2455 :    
2456 :     TODO items:
2457 :    
2458 :     We should go through and throw out all controls that are no longer
2459 :     connected to anything. Moreover, we should go through and provide
2460 :     meaningful (and correct!) documentation strings for those controls
2461 :     that still are connected.
2462 :    
2463 :     Currently, multiple calls to Controls.new are accepted (only the first
2464 :     has any effect). Eventually we should make sure that every control
2465 :     is being made (via Controls.new) exactly once. Future access can then
2466 :     be done using Controls.acc.
2467 :    
2468 :     Finally, it would probably be a good idea to use the getter-setter
2469 :     interface to controls rather than ref cells. For the time being, both
2470 :     styles are provided by the Controls module, but getter-setter pairs are
2471 :     better if thread-safety is of any concern because they can be wrapped.
2472 :    
2473 :     *****************************************
2474 :    
2475 :     One bug fix: The function blockPlacement in three of the MLRISC
2476 :     backpatch files used to be hard-wired to one of two possibilities at
2477 :     link time (according to the value of the placementFlag). But (I
2478 :     think) it should rather sense the flag every time.
2479 :    
2480 :     *****************************************
2481 :    
2482 :     Other assorted changes (by other people who did not supply a HISTORY entry):
2483 :    
2484 :     1. the cross-module inliner now works much better (Monnier)
2485 :     2. representation of weights, frequencies, and probabilities in MLRISC
2486 :     changed in preparation of using those for weighted block placement
2487 :     (Reppy, George)
2488 :    
2489 :     ----------------------------------------------------------------------
2490 : george 1116 Name: Lal George
2491 : george 1124 Date: 2002/03/07 14:44:24 EST 2002
2492 :     Tag: george-20020307-weighted-block-placement
2493 :    
2494 :     Tested the weighted block placement optimization on all architectures
2495 :     (except the hppa) using AMPL to generate the block and edge frequencies.
2496 :     Changes were required in the machine properties to correctly
2497 :     categorize trap instructions. There is an MLRISC flag
2498 :     "weighted-block-placement" that can be used to enable weighted block
2499 :     placement, but this will be ineffective without block/edge
2500 :     frequencies (coming soon).
2501 :    
2502 :    
2503 :     ----------------------------------------------------------------------
2504 :     Name: Lal George
2505 : george 1116 Date: 2002/03/05 17:24:48 EST
2506 :     Tag: george-20020305-linkage-cluster
2507 :    
2508 : george 1124 In order to support the block placement optimization, a new cluster
2509 :     is generated as the very first cluster (called the linkage cluster).
2510 :     It contains a single jump to the 'real' entry point for the compilation
2511 :     unit. Block placement has no effect on the linkage cluster itself, but
2512 :     all the other clusters have full freedom in the manner in which they
2513 :     reorder blocks or functions.
2514 : george 1116
2515 :     On the x86 the typical linkage code that is generated is:
2516 :     ----------------------
2517 :     .align 2
2518 :     L0:
2519 :     addl $L1-L0, 72(%esp)
2520 : george 1124 jmp L1
2521 : george 1116
2522 :    
2523 :     .align 2
2524 :     L1:
2525 :     ----------------------
2526 :    
2527 :     72(%esp) is the memory location for the stdlink register. This
2528 :     must contain the address of the CPS function being called. In the
2529 : george 1124 above example, it contains the address of L0; before
2530 : george 1116 calling L1 (the real entry point for the compilation unit), it
2531 :     must contain the address for L1, and hence
2532 :    
2533 :     addl $L1-L0, 72(%esp)
2534 :    
2535 : george 1124 I have tested this on all architectures except the hppa.The increase
2536 :     in code size is of course negligible
2537 : george 1116
2538 :     ----------------------------------------------------------------------
2539 : leunga 1115 Name: Allen Leung
2540 :     Date: 2002/03/03 13:20:00 EST
2541 :     Tag: leunga-20020303-mlrisc-tools
2542 :    
2543 :     Added #[ ... ] expressions to mlrisc tools
2544 :    
2545 :     ----------------------------------------------------------------------
2546 : blume 1096 Name: Matthias Blume
2547 : blume 1098 Date: 2002/02/27 12:29:00 EST
2548 :     Tag: blume-20020227-cdebug
2549 :     Description:
2550 :    
2551 :     - made types in structure C and C_Debug to be equal
2552 :     - got rid of code duplication (c-int.sml vs. c-int-debug.sml)
2553 :     - there no longer is a C_Int_Debug (C_Debug is directly derived from C)
2554 :    
2555 :     ----------------------------------------------------------------------
2556 :     Name: Matthias Blume
2557 : blume 1096 Date: 2002/02/26 12:00:00 EST
2558 :     Tag: blume-20020226-ffi
2559 :     Description:
2560 :    
2561 :     1. Fixed a minor bug in CM's "noweb" tool:
2562 :     If numbering is turned off, then truly don't number (i.e., do not
2563 :     supply the -L option to noweb). The previous behavior was to supply
2564 :     -L'' -- which caused noweb to use the "default" line numbering scheme.
2565 :     Thanks to Chris Richards for pointing this out (and supplying the fix).
2566 :    
2567 :     2. Once again, I reworked some aspects of the FFI:
2568 :    
2569 :     A. The incomplete/complete type business:
2570 :    
2571 :     - Signatures POINTER_TO_INCOMPLETE_TYPE and accompanying functors are
2572 :     gone!
2573 :     - ML types representing an incomplete type are now *equal* to
2574 :     ML types representing their corresponding complete types (just like
2575 :     in C). This is still safe because ml-nlffigen will not generate
2576 :     RTTI for incomplete types, nor will it generate functions that
2577 :     require access to such RTTI. But when ML code generated from both
2578 :     incomplete and complete versions of the C type meet, the ML types
2579 :     are trivially interoperable.
2580 :    
2581 :     NOTE: These changes restore the full generality of the translation
2582 :     (which was previously lost when I eliminated functorization)!
2583 :    
2584 :     B. Enum types:
2585 :    
2586 :     - Structure C now has a type constructor "enum" that is similar to
2587 :     how the "su" constructor works. However, "enum" is not a phantom
2588 :     type because each "T enum" has values (and is isomorphic to
2589 :     MLRep.Signed.int).
2590 :     - There are generic access operations for enum objects (using
2591 :     MLRep.Signed.int).
2592 :     - ml-nlffigen will generate a structure E_foo for each "enum foo".
2593 :     * The structure contains the definition of type "mlrep" (the ML-side
2594 :     representation type of the enum). Normally, mlrep is the same
2595 :     as "MLRep.Signed.int", but if ml-nlffigen was invoked with "-ec",
2596 :     then mlrep will be defined as a datatype -- thus facilitating
2597 :     pattern matching on mlrep values.
2598 :     ("-ec" will be suppressed if there are duplicate values in an
2599 :     enumeration.)
2600 :     * Constructors ("-ec") or values (no "-ec") e_xxx of type mlrep
2601 :     will be generated for each C enum constant xxx.
2602 :     * Conversion functions m2i and i2m convert between mlrep and
2603 :     MLRep.Signed.int. (Without "-ec", these functions are identities.)
2604 :     * Coversion functions c and ml convert between mlrep and "tag enum".
2605 :     * Access functions (get/set) fetch and store mlrep values.
2606 :     - By default (unless ml-nlffigen was invoked with "-nocollect"), unnamed
2607 :     enumerations are merged into one single enumeration represented by
2608 :     structure E_'.
2609 :    
2610 :     ----------------------------------------------------------------------
2611 : leunga 1080 Name: Allen Leung
2612 : leunga 1094 Date: 2002/02/25 04:45:00 EST
2613 :     Tag: leunga-20020225-cps-spill
2614 :    
2615 :     This is a new implementation of the CPS spill phase.
2616 :     The new phase is in the new file compiler/CodeGen/cpscompile/spill-new.sml
2617 :     In case of problems, replace it with the old file spill.sml
2618 :    
2619 :     The current compiler runs into some serious performance problems when
2620 :     constructing a large record. This can happen when we try to compile a
2621 :     structure with many items. Even a very simple structure like the following
2622 :     makes the compiler slow down.
2623 :    
2624 :     structure Foo = struct
2625 :     val x_1 = 0w1 : Word32.int
2626 :     val x_2 = 0w2 : Word32.int
2627 :     val x_3 = 0w3 : Word32.int
2628 :     ...
2629 :     val x_N = 0wN : Word32.int
2630 :     end
2631 :    
2632 :     The following table shows the compile time, from N=1000 to N=4000,
2633 :     with the old compiler:
2634 :    
2635 :     N
2636 :     1000 CPS 100 spill 0.04u 0.00s 0.00g
2637 :     MLRISC ra 0.06u 0.00s 0.05g
2638 :     (spills = 0 reloads = 0)
2639 :     TOTAL 0.63u 0.07s 0.21g
2640 :    
2641 :     1100 CPS 100 spill 8.25u 0.32s 0.64g
2642 :     MLRISC ra 5.68u 0.59s 3.93g
2643 :     (spills = 0 reloads = 0)
2644 :     TOTAL 14.71u 0.99s 4.81g
2645 :    
2646 :     1500 CPS 100 spill 58.55u 2.34s 1.74g
2647 :     MLRISC ra 5.54u 0.65s 3.91g
2648 :     (spills = 543 reloads = 1082)
2649 :     TOTAL 65.40u 3.13s 6.00g
2650 :    
2651 :     2000 CPS 100 spill 126.69u 4.84s 3.08g
2652 :     MLRISC ra 0.80u 0.10s 0.55g
2653 :     (spills = 42 reloads = 84)
2654 :     TOTAL 129.42u 5.10s 4.13g
2655 :    
2656 :     3000 CPS 100 spill 675.59u 19.03s 11.64g
2657 :     MLRISC ra 2.69u 0.27s 1.38g
2658 :     (spills = 62 reloads = 124)
2659 :     TOTAL 682.48u 19.61s 13.99g
2660 :    
2661 :     4000 CPS 100 spill 2362.82u 56.28s 43.60g
2662 :     MLRISC ra 4.96u 0.27s 2.72g
2663 :     (spills = 85 reloads = 170)
2664 :     TOTAL 2375.26u 57.21s 48.00g
2665 :    
2666 :     As you can see the old cps spill module suffers from some serious
2667 : leunga 1115 performance problem. But since I cannot decipher the old code fully,
2668 :     instead of patching the problems up, I'm reimplementing it
2669 : leunga 1094 with a different algorithm. The new code is more modular,
2670 :     smaller when compiled, and substantially faster
2671 :     (O(n log n) time and O(n) space). Timing of the new spill module:
2672 :    
2673 :     4000 CPS 100 spill 0.02u 0.00s 0.00g
2674 :     MLRISC ra 0.25u 0.02s 0.15g
2675 :     (spills=1 reloads=3)
2676 :     TOTAL 7.74u 0.34s 1.62g
2677 :    
2678 :     Implementation details:
2679 :    
2680 :     As far as I can tell, the purpose of the CPS spill module is to make sure the
2681 :     number of live variables at any program point (the bandwidth)
2682 :     does not exceed a certain limit, which is determined by the
2683 :     size of the spill area.
2684 :    
2685 :     When the bandwidth is too large, we decrease the register pressure by
2686 :     packing live variables into spill records. How we achieve this is
2687 :     completely different than what we did in the old code.
2688 :    
2689 :     First, there is something about the MLRiscGen code generator
2690 :     that we should be aware of:
2691 :    
2692 :     o MLRiscGen performs code motion!
2693 :    
2694 :     In particular, it will move floating point computations and
2695 :     address computations involving only the heap pointer to
2696 :     their use sites (if there is only a single use).
2697 :     What this means is that if we have a CPS record construction
2698 :     statement
2699 :    
2700 :     RECORD(k,vl,w,e)
2701 :    
2702 :     we should never count the new record address w as live if w
2703 :     has only one use (which is often the case).
2704 :    
2705 :     We should do something similar to floating point, but the transformation
2706 :     there is much more complex, so I won't deal with that.
2707 :    
2708 :     Secondly, there are now two new cps primops at our disposal:
2709 :    
2710 :     1. rawrecord of record_kind option
2711 :     This pure operator allocates some uninitialized storage from the heap.
2712 :     There are two forms:
2713 :    
2714 :     rawrecord NONE [INT n] allocates a tagless record of length n
2715 :     rawrecord (SOME rk) [INT n] allocates a tagged record of length n
2716 :     and initializes the tag.
2717 :    
2718 :     2. rawupdate of cty
2719 :     rawupdate cty (v,i,x)
2720 :     Assigns to x to the ith component of record v.
2721 :     The storelist is not updated.
2722 :    
2723 :     We use these new primops for both spilling and increment record construction.
2724 :    
2725 :     1. Spilling.
2726 :    
2727 :     This is implemented with a linear scan algorithm (but generalized
2728 :     to trees). The algorithm will create a single spill record at the
2729 :     beginning of the cps function and use rawupdate to spill to it,
2730 :     and SELECT or SELp to reload from it. So both spills and reloads
2731 :     are fine-grain operations. In contrast, in the old algorithm
2732 :     "spills" have to be bundled together in records.
2733 :    
2734 :     Ideally, we should sink the spill record construction to where
2735 :     it is needed. We can even split the spill record into multiple ones
2736 :     at the places where they are needed. But CPS is not a good
2737 :     representation for global code motion, so I'll keep it simple and
2738 :     am not attempting this.
2739 :    
2740 :     2. Incremental record construction (aka record splitting).
2741 :    
2742 :     Long records with many component values which are simulatenously live
2743 :     (recall that single use record addresses are not considered to
2744 :     be live) are constructed with rawrecord and rawupdate.
2745 :     We allocate space on the heap with rawrecord first, then gradually
2746 :     fill it in with rawupdate. This is the technique suggested to me
2747 :     by Matthias.
2748 :    
2749 :     Some restrictions on when this is applicable:
2750 :     1. It is not a VECTOR record. The code generator currently does not handle
2751 :     this case. VECTOR record uses double indirection like arrays.
2752 :     2. All the record component values are defined in the same "basic block"
2753 :     as the record constructor. This is to prevent speculative
2754 :     record construction.
2755 :    
2756 :     ----------------------------------------------------------------------
2757 :     Name: Allen Leung
2758 : leunga 1086 Date: 2002/02/22 01:02:00 EST
2759 :     Tag: leunga-20020222-mlrisc-tools
2760 :    
2761 :     Minor bug fixes in the parser and rewriter
2762 :    
2763 :     ----------------------------------------------------------------------
2764 :     Name: Allen Leung
2765 : leunga 1085 Date: 2002/02/21 20:20:00 EST
2766 :     Tag: leunga-20020221-peephole
2767 :    
2768 :     Regenerated the peephole files. Some contained typos in the specification
2769 :     and some didn't compile because of pretty printing bugs in the old version
2770 :     of 'nowhere'.
2771 :    
2772 :     ----------------------------------------------------------------------
2773 :     Name: Allen Leung
2774 : leunga 1079 Date: 2002/02/19 20:20:00 EST
2775 :     Tag: leunga-20020219-mlrisc-tools
2776 :     Description:
2777 :    
2778 :     Minor bug fixes to the mlrisc-tools library:
2779 :    
2780 :     1. Fixed up parsing colon suffixed keywords
2781 :     2. Added the ability to shut the error messages up
2782 :     3. Reimplemented the pretty printer and fixed up/improved
2783 :     the pretty printing of handle and -> types.
2784 :     4. Fixed up generation of literal symbols in the nowhere tool.
2785 :     5. Added some SML keywords to to sml.sty
2786 :    
2787 :     ----------------------------------------------------------------------
2788 :     Name: Matthias Blume
2789 : blume 1078 Date: 2002/02/19 16:20:00 EST
2790 :     Tag: blume-20020219-cmffi
2791 :     Description:
2792 :    
2793 :     A wild mix of changes, some minor, some major:
2794 :    
2795 :     * All C FFI-related libraries are now anchored under $c:
2796 :     $/c.cm --> $c/c.cm
2797 :     $/c-int.cm --> $c/internals/c-int.cm
2798 :     $/memory.cm --> $c/memory/memory.cm
2799 :    
2800 :     * "make" tool (in CM) now treats its argument pathname slightly
2801 :     differently:
2802 :     1. If the native expansion is an absolute name, then before invoking
2803 :     the "make" command on it, CM will apply OS.Path.mkRelative
2804 :     (with relativeTo = OS.FileSys.getDir()) to it.
2805 :     2. The argument will be passed through to subsequent phases of CM
2806 :     processing without "going native". In particular, if the argument
2807 :     was an anchored path, then "make" will not lose track of that anchor.
2808 :    
2809 :     * Compiler backends now "know" their respective C calling conventions
2810 :     instead of having to be told about it by ml-nlffigen. This relieves
2811 :     ml-nlffigen from one of its burdens.
2812 :    
2813 :     * The X86Backend has been split into X86CCallBackend and X86StdCallBackend.
2814 :    
2815 :     * Export C_DEBUG and C_Debug from $c/c.cm.
2816 :    
2817 :     * C type encoding in ml-nlffi-lib has been improved to model the conceptual
2818 :     subtyping relationship between incomplete pointers and their complete
2819 :     counterparts. For this, ('t, 'c) ptr has been changed to 'o ptr --
2820 :     with the convention of instantiating 'o with ('t, 'c) obj whenever
2821 :     the pointer target type is complete. In the incomplete case, 'o
2822 :     will be instantiated with some "'c iobj" -- a type obtained by
2823 :     using one of the functors PointerToIncompleteType or PointerToCompleteType.
2824 :    
2825 :     Operations that work on both incomplete and complete pointer types are
2826 :     typed as taking an 'o ptr while operations that require the target to
2827 :     be known are typed as taking some ('t, 'c) obj ptr.
2828 :    
2829 :     voidptr is now a bit "more concrete", namely "type voidptr = void ptr'"
2830 :     where void is an eqtype without any values. This makes it possible
2831 :     to work on voidptr values using functions meant to operate on light
2832 :     incomplete pointers.
2833 :    
2834 :     * As a result of the above, signature POINTER_TO_INCOMPLETE_TYPE has
2835 :     been vastly simplified.
2836 :    
2837 :     ----------------------------------------------------------------------
2838 :     Name: Matthias Blume
2839 : blume 1076 Date: 2002/02/19 10:48:00 EST
2840 :     Tag: blume-20020219-pqfix
2841 :     Description:
2842 :    
2843 :     Applied Chris Okasaki's bug fix for priority queues.
2844 :    
2845 :     ----------------------------------------------------------------------
2846 :     Name: Matthias Blume
2847 : blume 1073 Date: 2002/02/15 17:05:00
2848 : blume 1069 Tag: Release_110_39
2849 :     Description:
2850 :    
2851 : blume 1073 Last-minute retagging is becoming a tradition... :-(
2852 :    
2853 :     This is the working release 110.39.
2854 :    
2855 :     ----------------------------------------------------------------------
2856 :     Name: Matthias Blume
2857 :     Date: 2002/02/15 16:00:00 EST
2858 :     Tag: Release_110_39-orig
2859 :     Description:
2860 :    
2861 : blume 1069 Working release 110.39. New bootfiles.
2862 :    
2863 : blume 1073 (Update: There was a small bug in the installer so it wouldn't work
2864 :     with all shells. So I retagged. -Matthias)
2865 :    
2866 : blume 1069 ----------------------------------------------------------------------
2867 :     Name: Matthias Blume
2868 : blume 1068 Date: 2002/02/15 14:17:00 EST
2869 :     Tag: blume-20020215-showbindings
2870 :     Description:
2871 :    
2872 :     Added EnvRef.listBoundSymbols and CM.State.showBindings. Especially
2873 :     the latter can be useful for exploring what bindings are available at
2874 :     the interactive prompt. (The first function returns only the list
2875 :     of symbols that are really bound, the second prints those but also the
2876 :     ones that CM's autoloading mechanism knows about.)
2877 :    
2878 :     ----------------------------------------------------------------------
2879 :     Name: Matthias Blume
2880 : blume 1067 Date: 2002/02/15 12:08:00 EST
2881 :     Tag: blume-20020215-iptrs
2882 :     Description:
2883 :    
2884 :     Two improvements to ml-nlffigen:
2885 :    
2886 :     1. Write files only if they do not exist or if their current contents
2887 :     do not coincide with what's being written. (That is, avoid messing
2888 :     with the time stamps unless absolutely necessary.)
2889 :    
2890 :     2. Implement a "repository" mechanism for generated files related
2891 :     to "incomplete pointer types". See the README file for details.
2892 :    
2893 :     ----------------------------------------------------------------------
2894 :     Name: Matthias Blume
2895 : blume 1066 Date: 2002/02/14 11:50:00 EST
2896 :     Tag: blume-20020214-quote
2897 :     Description:
2898 :    
2899 :     Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm). This is required
2900 :     because of the new and improved tag generation scheme. (Thanks to Allen
2901 :     Leung for pointing it out.)
2902 :    
2903 :     ----------------------------------------------------------------------
2904 : george 1065 Name: Lal George
2905 :     Date: 2002/02/14 09:55:27 EST 2002
2906 :     Tag: george-20020214-isabelle-bug
2907 :     Description:
2908 :    
2909 :     Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
2910 :     of Isabelle on the x86.
2911 :    
2912 :     From Allen:
2913 :     -----------
2914 :     I've found the problem:
2915 :    
2916 :     in ra-core.sml, I use the counter "blocked" to keep track of the
2917 :     true number of elements in the freeze queue. When the counter goes
2918 :     to zero, I skip examining the queue. But I've messed up the
2919 :     bookkeeping in combine():
2920 :    
2921 :     else ();
2922 :     case !ucol of
2923 :     PSEUDO => (if !cntv > 0 then
2924 :     (if !cntu > 0 then blocked := !blocked - 1 else ();
2925 :     ^^^^^^^^^^^^^^^^^^^^^^^
2926 :     moveu := mergeMoveList(!movev, !moveu)
2927 :     )
2928 :     else ();
2929 :    
2930 :     combine() is called to coalesce two nodes u and v.
2931 :     I think I was thinking that if the move counts of u and v are both
2932 :     greater than zero then after they are coalesced then one node is
2933 :     removed from the freeze queue. Apparently I was thinking that
2934 :     both u and v are of low degree, but that's clearly not necessarily true.
2935 :    
2936 :    
2937 :     02/12/2002:
2938 :     Here's the patch. HOL now compiles.
2939 :    
2940 :     I don't know how this impact on performance (compile
2941 :     time or runtime). This bug caused the RA (especially on the x86)
2942 :     to go thru the potential spill phase when there are still nodes on the
2943 :     freeze queue.
2944 :    
2945 :    
2946 :    
2947 :    
2948 :     ----------------------------------------------------------------------
2949 : blume 1058 Name: Matthias Blume
2950 : blume 1064 Date: 2002/02/13 22:40:00 EST
2951 :     Tag: blume-20020213-fptr-rtti
2952 :     Description:
2953 :    
2954 :     Fixed a bug in ml-nlffigen that was introduced with one of the previous
2955 :     updates.
2956 :    
2957 :     ----------------------------------------------------------------------
2958 :     Name: Matthias Blume
2959 : blume 1063 Date: 2002/02/13 16:41:00 EST
2960 :     Tag: blume-20020213-cmlpq
2961 :     Description:
2962 :    
2963 :     Added new priority queue export symbols (which have just been added to
2964 :     smlnj-lib.cm) to CML's version of smlnj-lib.cm. (Otherwise CML would
2965 :     not compile and the installer would choke.)
2966 :    
2967 :     ----------------------------------------------------------------------
2968 :     Name: Matthias Blume
2969 : blume 1062 Date: 2002/02/13 16:15:00 EST
2970 :     Tag: blume-20020213-various
2971 :     Description:
2972 :    
2973 :     1. More tweaks to ml-nlffigen:
2974 :    
2975 :     - better internal datastructures (resulting in slight speedup)
2976 :     - "-match" option requires exact match
2977 :     - "localized" gensym counters (untagged structs/unions nested within
2978 :     other structs/unions or within typedefs get a fresh counter; their
2979 :     tag will be prefixed by a concatenation of their parents' tags)
2980 :     - bug fixes (related to calculation of transitive closure of types
2981 :     to be included in the output)
2982 :    
2983 :     2. Minor Basis updates:
2984 :    
2985 :     - added implementations for List.collate and Option.app
2986 :    
2987 :     ----------------------------------------------------------------------
2988 :     Name: Matthias Blume
2989 : blume 1060 Date: 2002/02/11 15:55:00 EST
2990 :     Tag: blume-20020211-gensym
2991 :     Description:
2992 :    
2993 :     Added a "-gensym" option to command line of ml-nlffigen. This can be
2994 :     used to specify a "stem" -- a string that is inserted in all "gensym'd"
2995 :     names (ML structure names that correspond to unnamed C structs, unions,
2996 :     and enums), so that separate runs of ml-nlffigen do not clash.
2997 :    
2998 :     ----------------------------------------------------------------------
2999 :     Name: Matthias Blume
3000 : blume 1059 Date: 2002/02/11 12:05:00 EST
3001 :     Tag: blume-20020211-gensml
3002 :     Description:
3003 :    
3004 :     A quick fix for a problem with GenSML (in the pgraph-util library):
3005 :     Make generation of toplevel "local" optional. (Strictly speaking,
3006 :     signature definitions within "local" are not legal SML.)
3007 :    
3008 :     Other than that: updates to INSTALL and cm/TODO.
3009 :    
3010 :     ----------------------------------------------------------------------
3011 :     Name: Matthias Blume
3012 : blume 1058 Date: 2002/02/08 15:00:00 EST
3013 :     Tag: blume-20020208-uniquepid
3014 :     Description:
3015 :    
3016 :     0. Version number has been bumped to 110.38.1. NEW BOOTFILES!!!
3017 :    
3018 :     1. The installer (config/install.sh) has gotten smarter:
3019 :    
3020 :     - Configuration options are a bit easier to specify now
3021 :     (in config/targets).
3022 :     - Bug in recognizing .tar.bz2 files fixed.
3023 :     - Installer automatically resolves dependencies between
3024 :     configuration options (e.g., if you ask for eXene, you will
3025 :     also get cml -- regardless whether you asked for it or not).
3026 :     - Installer can run in "quieter mode" by setting the environment
3027 :     variable INSTALL_QUIETLY to "true". "Quieter" does not mean
3028 :     "completely silent", though.
3029 :     - Build HashCons library as part of smlnj-lib.
3030 :    
3031 :     2. A new scheme for assigning persistent identifiers to compilation
3032 :     units (and, by extension, to types etc.) has been put into place.
3033 :     This fixes a long-standing bug where types and even dynamic values
3034 :     can get internally confused, thereby compromising type safety
3035 :     (abstraction) and dynamic correctness. See
3036 :    
3037 :     http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
3038 :    
3039 :     for an example of how things could go wrong until now.
3040 :    
3041 :     The downside of the new scheme is that pids are not quite as
3042 :     persistent as they used to be: CM will generate a fresh pid
3043 :     for every compilation unit that it thinks it sees for the first
3044 :     time. That means that if you compile starting from a clean, fresh
3045 :     source tree at two different times, you end up with different
3046 :     binaries.
3047 :    
3048 :     Cutoff recompilation, however, has not been compromised because
3049 :     CM keeps pid information in special caches between runs.
3050 :    
3051 :     ----------------------------------------------------------------------
3052 : george 1053 Name: Lal George
3053 : george 1055 Date: 2002/02/07 15:34:13 EST 2002
3054 :     Tag: <none>
3055 :     Description:
3056 :    
3057 :     Compilers that generate assembly code may produce global labels
3058 :     whose value is resolved at link time. The various peephole optimization
3059 :     modules did not take this in account.
3060 :    
3061 :     TODO. The Labels.addrOf function should really return an option
3062 :     type so that clients are forced to deal with this issue, rather
3063 :     than an exception being raised.
3064 :    
3065 :     ----------------------------------------------------------------------
3066 :     Name: Lal George
3067 : george 1053 Date: 2002/02/06 13:55:02 EST
3068 :     Tag: george-20020206-ra-breakup
3069 :     Description:
3070 :    
3071 :     1. A bug fix from Allen.
3072 :    
3073 :     A typo causes extra fstp %st(0)'s to be generated at compensation
3074 :     edges, which might cause stack underflow traps at runtime. This
3075 :     occurs in fft where there are extraneous fstps right before the 'into'
3076 :     trap instruction (in this case they are harmless since none of the
3077 :     integers overflow.)
3078 :    
3079 : george 1054 2. Pulled out various utility modules that were embedded in the modules
3080 : george 1053 of the register allocator. I need these modules for other purposes, but
3081 : george 1054 they are not complete enough to put into a library (just yet).
3082 : george 1053 ----------------------------------------------------------------------
3083 : blume 1049 Name: Matthias Blume
3084 :     Date: 2002/01/31 16:05:00 EST
3085 :     Tag: blume-20020131-sparc-ccalls
3086 :     Description:
3087 :    
3088 :     1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
3089 :     of extra stack space by mistake. Fixed.
3090 :    
3091 :     2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
3092 :    
3093 :     ----------------------------------------------------------------------
3094 : leunga 1048 Name: Allen Leung
3095 :     Date: 2002/01/30
3096 :     Tag: leunga-20020130-nowhere-bug-fix
3097 :     Description:
3098 :    
3099 :     MLRISC bug fixes:
3100 :     1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
3101 :     2. MachineInt.fromString was negating its value.
3102 :    
3103 :     ----------------------------------------------------------------------
3104 : blume 1039 Name: Matthias Blume
3105 : blume 1047 Date: 2002/01/29
3106 :     Tag: blume-20020129-INSTALL
3107 :     Description:
3108 :    
3109 :     - Added somewhat detailed installation instructions (file INSTALL).
3110 :     - Fixed curl-detection bug in config/install.sh.
3111 :     - It is now possible to select the URL getter using the URLGETTER
3112 :     environment variable:
3113 :    
3114 :     not set / "unknown" --> automatic detection (script tries wget,
3115 :     curl, and lynx)
3116 :     "wget" / "curl" / "lynx" --> use the specified program (script "knows"
3117 :     how to properly invoke them)
3118 :     other --> use $URLGETTER directly, it must take
3119 :     precisely two command-line arguments
3120 :     (source URL and destination file name)
3121 :    
3122 :     ----------------------------------------------------------------------
3123 :     Name: Matthias Blume
3124 : blume 1044 Date: 2002/01/28
3125 : blume 1045 Tag: blume-20020128-sparc-ccalls
3126 :     Description:
3127 :    
3128 :     - Fixed problem with calculation of "used" registers in sparc-c-calls.
3129 :     - Make use of the allocParam argument in sparc-c-calls.
3130 :    
3131 :     ----------------------------------------------------------------------
3132 :     Name: Matthias Blume
3133 :     Date: 2002/01/28
3134 : blume 1044 Tag: blume-20020128-allocParam
3135 :     Description:
3136 :    
3137 :     John Reppy: Changes c-calls API to accept client-callback for
3138 :     allocating extra stack space.
3139 :     me: Corresponding changes to mlriscGen (using a dummy argument that
3140 :     does not change the current behavior).
3141 :    
3142 :     ----------------------------------------------------------------------
3143 :     Name: Matthias Blume
3144 : blume 1040 Date: 2002/01/28 12:00:00
3145 :     Tag: Release_110_38
3146 :     Description:
3147 :    
3148 :     This time for real!!!
3149 :    
3150 :     ----------------------------------------------------------------------
3151 :     Name: Matthias Blume
3152 : blume 1039 Date: 2002/01/28 10:56:00 EST
3153 :     Tag: blume-20020128-retraction
3154 :     Description:
3155 :    
3156 :     0. Retracted earlier 110.38. (The Release_110_38 tag has been replaced
3157 :     with blume-Release_110_38-retracted.)
3158 :    
3159 :     1. Fixed a problem with incorrect rounding modes in real64.sml.
3160 :     (Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
3161 :    
3162 :     2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
3163 :     and enums fixed. The naming of corresponding ML identifiers should
3164 :     now be consistent again.
3165 :    
3166 :     ----------------------------------------------------------------------
3167 : leunga 1038 Name: Allen Leung
3168 :     Date: 2002/01/27
3169 :     Tag: leunga-20020127-nowhere
3170 :     Description:
3171 :    
3172 :     Added a target called nowhere in the configuration scripts.
3173 :     Enabling this will build the MLRISC 'nowhere' tool (for translating
3174 :     programs with where-clauses into legal SML code) during installation.
3175 :    
3176 :     ----------------------------------------------------------------------
3177 : blume 1036 Name: Matthias Blume
3178 : leunga 1038 Date: 2002/01/25 21:27:00 EST
3179 : blume 1039 Tag: blume-Release_110_38-retracted
3180 : blume 1037 Description:
3181 :    
3182 :     Call it a (working) release! Version is 110.38. Bootfiles are ready.
3183 :    
3184 :     README will be added later.
3185 :    
3186 : blume 1039 !!! NOTE: Re-tagged as blume-Release_110_38-retracted. Original tag
3187 :     (Release_110_38) removed. Reason: Last-minute bug fixes.
3188 :    
3189 : blume 1037 ----------------------------------------------------------------------
3190 :     Name: Matthias Blume
3191 : blume 1036 Date: 2002/01/25
3192 :     Tag: blume-20020125-ffi
3193 :     Description:
3194 :    
3195 :     A large number of tweaks and improvements to ml-nlffi-lib and
3196 :     ml-nlffigen:
3197 :    
3198 :     - ML represenation types have been streamlined
3199 :     - getter and setter functions work with concrete values, not abstract
3200 :     ones where possible
3201 :     - ml-nlffigen command line more flexible (see README file there)
3202 :     - some bugs have been fixed (hopefully)
3203 :    
3204 :     ----------------------------------------------------------------------
3205 : george 1034 Name: Lal George
3206 :     Date: 2002/01/24
3207 :     Tag: george-20020124-risc-ra-interface
3208 :     Description:
3209 :    
3210 :     There is a dramatic simplification in the interface to the
3211 :     register allocator for RISC architectures as a result of making
3212 :     parallel copy instructions explicit.
3213 :    
3214 :     ----------------------------------------------------------------------
3215 : blume 1028 Name: Matthias Blume
3216 : blume 1032 Date: 2002/01/22
3217 :     Tag: blume-20020122-x86-ccalls
3218 :     Description:
3219 :    
3220 :     Bug fix for c-calls on x86 (having to do with how char- and
3221 :     short-arguments are being handled).
3222 :    
3223 :     ----------------------------------------------------------------------
3224 :     Name: Matthias Blume
3225 : blume 1031 Date: 2002/01/21
3226 :     Tag: blume-20020121-ff
3227 :     Description:
3228 :    
3229 :     Another day of fiddling with the FFI...
3230 :    
3231 :     1. Bug fix/workaround: CKIT does not complain about negative array
3232 :     dimensions, so ml-nlffigen has to guard itself against this possibility.
3233 :     (Otherwise a negative dimension would send it into an infinite loop.)
3234 :    
3235 :     2. Some of the abstract types (light objects, light pointers, most "base"
3236 :     types) in structure C are now eqtypes.
3237 :    
3238 :     3. Added constructors and test functions for NULL function pointers.
3239 :    
3240 :     ----------------------------------------------------------------------
3241 :     Name: Matthias Blume
3242 : blume 1028 Date: 2002/01/18
3243 : blume 1030 Tag: blume-20020118-ready-for-new-release
3244 :     Description:
3245 :    
3246 :     Made config/srcarchiveurl point to a new place. (Will provide boot
3247 :     files shortly.)
3248 :    
3249 :     Maybe we christen this to be 110.38?
3250 :    
3251 :     ----------------------------------------------------------------------
3252 :     Name: Matthias Blume
3253 :     Date: 2002/01/18
3254 : blume 1029 Tag: blume-20020118-more-ffifiddle
3255 :     Description:
3256 :    
3257 :     Today's FFI fiddling:
3258 :    
3259 :     - Provided a structure CGetSet with "convenient" versions of C.Get.* and
3260 :     C.Set.* that use concrete (MLRep.*) arguments and results instead
3261 :     of abstract ones.
3262 :    
3263 :     - Provided word-style bit operations etc. for "int" representation
3264 :     types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
3265 :     and Long.
3266 :    
3267 :     ----------------------------------------------------------------------
3268 :     Name: Matthias Blume
3269 :     Date: 2002/01/18
3270 : blume 1028 Tag: blume-20020118-use-x86-fp
3271 :     Description:
3272 :    
3273 :     Now that x86-fast-fp seems to be working, I turned it back on again
3274 :     by default. (Seems to work fine now, even with the FFI.)
3275 :    
3276 :     Other than that, I added some documentation about the FFI to
3277 :     src/ml-nlffigen/README and updated the FFI test examples in
3278 :     src/ml-nlffi-lib/Tests/*.
3279 :    
3280 :     ----------------------------------------------------------------------
3281 : leunga 1025 Name: Allen Leung
3282 :     Date: 2002/01/17
3283 :     Tag: leunga-20020117-x86-fast-fp-call
3284 :     Description:
3285 :    
3286 :     1. Fixed a problem with handling return fp values when x86's fast fp
3287 :     mode is turned on.
3288 :    
3289 :     2. Minor pretty printing fix for cellset. Print %st(0) as %st(0) instead
3290 :     of %f32.
3291 :    
3292 :     3. Added a constructor INT32lit to the ast of MLRISC tools.
3293 :    
3294 :     ----------------------------------------------------------------------
3295 : blume 1021 Name: Matthias Blume
3296 :     Date: 2002/01/16
3297 :     Tag: blume-20020116-ffifiddle
3298 :     Description:
3299 :    
3300 :     More fiddling with the FFI interface:
3301 :    
3302 :     - Make constness 'c instead of rw wherever possible. This eliminates
3303 :     the need for certain explicit coercions. (However, due to ML's
3304 :     value polymorphism, there will still be many cases where explicit
3305 :     coercions are necessary. Phantom types are not the whole answer
3306 :     to modeling a subtyping relationship in ML.)
3307 :    
3308 :     - ro/rw coersions for pointers added. (Avoids the detour through */&.)
3309 :    
3310 :     - "printf" test example added to src/ml-nlffi-lib/Tests. (Demonstrates
3311 :     clumsy workaround for varargs problem.)
3312 :    
3313 :     ----------------------------------------------------------------------
3314 : george 1016 Name: Lal George
3315 :     Date: 2002/01/15
3316 :     Tag: <none>
3317 :     Description:
3318 :    
3319 :     1. Since COPY instructions are no longer native to the architecture,
3320 :     a generic functor can be used to implement the expandCopies function.
3321 :    
3322 :     2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
3323 :     TEXT segment.
3324 :    
3325 :     ----------------------------------------------------------------------
3326 : blume 1011 Name: Matthias Blume
3327 : blume 1015 Date: 2002/01/15
3328 :     Tag: blume-20020115-ffiupdates
3329 :     Description:
3330 :    
3331 :     1. Fix for bug resulting in single-precision float values being returned
3332 :     incorrectly from FFI calls.
3333 :    
3334 :     2. Small modifications to C FFI API:
3335 :    
3336 :     - memory-allocation routines return straight objects (no options)
3337 :     and raise an exception in out-of-memory situations
3338 :     - unsafe extensions to cast between function pointers and pointers
3339 :     from/to ints
3340 :     - added structure C_Debug as an alternative to structure C where
3341 :     pointer-dereferencing (|*| and |*!) always check for null-pointers
3342 :     - added open_lib' to DynLinkage; open_lib' works like open_lib
3343 :     but also takes a (possibly empty) list of existing library handles
3344 :     that the current library depends on
3345 :    
3346 :     ----------------------------------------------------------------------
3347 :     Name: Matthias Blume
3348 : blume 1011 Date: 2002/01/10
3349 :     Tag: blume-20020110-newffigen
3350 :     Description:
3351 :    
3352 :     1. Updates to portable graph code.
3353 :    
3354 :     2. Major update to ml-nlffigen and ml-nlffi-lib. Things are much
3355 :     more scalable now so that even huge interfaces such as the one
3356 :     for GTK compile in finite time and space. :-)
3357 :     See src/ml-nlffigen/README for details on what's new.
3358 :    
3359 :     ----------------------------------------------------------------------
3360 : george 1003 Name: Lal George
3361 : george 1009 Date: 2001/01/09 14:31:35 EST 2002
3362 :     Tag: george-20011206-rm-native-copy
3363 :     Description:
3364 :    
3365 :     Removed the native COPY and FCOPY instructions
3366 :     from all the architectures and replaced it with the
3367 :     explicit COPY instruction from the previous commit.
3368 :    
3369 :     It is now possible to simplify many of the optimizations
3370 :     modules that manipulate copies. This has not been
3371 :     done in this change.
3372 :    
3373 :     ----------------------------------------------------------------------
3374 :     Name: Lal George
3375 : george 1003 Date: 2001/12/06 16:50:13 EST 2001
3376 :     Tag: george-20011206-mlrisc-instruction
3377 :     Description:
3378 : george 824
3379 : george 1003 Changed the representation of instructions from being fully abstract
3380 :     to being partially concrete. That is to say:
3381 :    
3382 :     from
3383 :     type instruction
3384 :    
3385 :     to
3386 :     type instr (* machine instruction *)
3387 :    
3388 :     datatype instruction =
3389 :     LIVE of {regs: C.cellset, spilled: C.cellset}
3390 :     | KILL of {regs: C.cellset, spilled: C.cellset}
3391 :     | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
3392 :     | ANNOTATION of {i: instruction, a: Annotations.annotation}
3393 :     | INSTR of instr
3394 :    
3395 :     This makes the handling of certain special instructions that appear on
3396 :     all architectures easier and uniform.
3397 :    
3398 :     LIVE and KILL say that a list of registers are live or killed at the
3399 :     program point where they appear. No spill code is generated when an
3400 :     element of the 'regs' field is spilled, but the register is moved to
3401 :     the 'spilled' (which is present, more for debugging than anything else).
3402 :    
3403 :     LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
3404 :     We used to generate:
3405 :    
3406 :     DEFFREG f1
3407 :     f1 := f2 + f3
3408 :     trapb
3409 :    
3410 :     but now generate:
3411 :    
3412 :     f1 := f2 + f3
3413 :     trapb
3414 :     LIVE {regs=[f1,f2,f3], spilled=[]}
3415 :    
3416 :     Furthermore, the DEFFREG (hack) required that all floating point instruction
3417 :     use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
3418 :     defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
3419 :     in a cleaner alpha implementation. (Hopefully, intel will not get rid of
3420 :     this architecture).
3421 :    
3422 :     COPYXXX is intended to replace the parallel COPY and FCOPY available on
3423 :     all the architectures. This will result in further simplification of the
3424 :     register allocator that must be aware of them for coalescing purposes, and
3425 :     will also simplify certain aspects of the machine description that provides
3426 :     callbacks related to parallel copies.
3427 :    
3428 :     ANNOTATION should be obvious, and now INSTR represents the honest to God
3429 :     machine instruction set!
3430 :    
3431 :     The <arch>/instructions/<arch>Instr.sml files define certain utility
3432 :     functions for making porting easier -- essentially converting upper case
3433 :     to lower case. All machine instructions (of type instr) are in upper case,
3434 :     and the lower case form generates an MLRISC instruction. For example on
3435 :     the alpha we have:
3436 :    
3437 :     datatype instr =
3438 :     LDA of {r:cell, b:cell, d:operand}
3439 :     | ...
3440 :    
3441 :     val lda : {r:cell, b:cell, d:operand} -> instruction
3442 :     ...
3443 :    
3444 :     where lda is just (INSTR o LDA), etc.
3445 :    
3446 : leunga 815 ----------------------------------------------------------------------
3447 : blume 986 Name: Matthias Blume
3448 : blume 993 Date: 2001/11/22 21:40:00 EST
3449 :     Tag: Release_110_37
3450 :     Description:
3451 :    
3452 :     Release 110.37. This time for real.
3453 :    
3454 :     ----------------------------------------------------------------------
3455 :     Name: Matthias Blume
3456 : blume 988 Date: 2001/11/21 16:35:00 EST
3457 :     Tag: blume-20011121-foot-in-mouth
3458 :     Description:
3459 :    
3460 :     Removed the "Release_110_37" tag because of a serious bug.
3461 :     This will be re-tagged once the bug is fixed.
3462 :    
3463 :     ----------------------------------------------------------------------
3464 :     Name: Matthias Blume
3465 : blume 987 Date: 2001/11/21 16:14:00 EST
3466 :     Tag: blume-20011121-forgottenfile
3467 :     Description:
3468 :    
3469 :     Forgot to add a file. (Just a .tex-file -- part of
3470 :     the CM manual source.)
3471 :    
3472 :     ----------------------------------------------------------------------
3473 :     Name: Matthias Blume
3474 : blume 986 Date: 2001/11/21 16:10:00 EST
3475 : blume 988 Tag: blume-20011121-invalid_110_37
3476 : blume 986 Description:
3477 :    
3478 : blume 988 Note: I removed the original tag "Release_110_37" from this commit
3479 :     because we found a serious bug in all non-x86 backends.
3480 :     - Matthias
3481 :    
3482 : blume 986 1. Modifications to the SML/NJ code generator and to the runtime system
3483 :     so that code object name strings are directly inserted into code
3484 :     objects at code generation time. The only business the runtime system
3485 :     has with this is now to read the name strings on occasions.
3486 :     (The encoding of the name string has also changed somewhat.)
3487 :    
3488 :     2. CM now implements a simple "set calculus" for specifying export lists.
3489 :     In particular, it is now possible to refer to the export lists of
3490 :     other libraries/groups/sources and form unions as well as differences.
3491 :     See the latest CM manual for details.
3492 :    
3493 :     3. An separate notion of "proxy" libraries has again be eliminated from
3494 :     CM's model. (Proxy libraries are now simply a special case of using
3495 :     the export list calculus.)
3496 :    
3497 :     4. Some of the existing libraries now take advantage of the new set
3498 :     calculus.
3499 :     (Notice that not all libraries have been converted because some
3500 :     of the existing .cm-files are supposed to be backward compatible
3501 :     with 110.0.x.)
3502 :    
3503 :     5. Some cleanup in stand-alone programs. (Don't use "exnMessage" -- use
3504 :     "General.exnMessage"! The former relies on a certain hook to be
3505 :     initialized, and that often does not happen in the stand-alone case.)
3506 :    
3507 :     ----------------------------------------------------------------------
3508 : george 984 Name: Lal George
3509 :     Date: 2001/11/21 13:56:18 EST
3510 :     Tag: george-2001121-pseudo-ops
3511 :     Description:
3512 :    
3513 :     Implemented a complete redesign of MLRISC pseudo-ops. Now there
3514 :     ought to never be any question of incompatabilities with
3515 :     pseudo-op syntax expected by host assemblers.
3516 :    
3517 :     For now, only modules supporting GAS syntax are implemented
3518 :     but more should follow, such as MASM, and vendor assembler
3519 :     syntax, e.g. IBM as, Sun as, etc.
3520 :    
3521 :     ----------------------------------------------------------------------
3522 : blume 977 Name: Matthias Blume
3523 :     Date: 2001/11/14 11:52:00 EST
3524 :     Tag: blume-20011114-srcname
3525 :     Description:
3526 :    
3527 :     1. Routed the name of the current source file to mlriscgen where it
3528 :     should be directly emitted into the code object. (This last part
3529 :     is yet to be done.)
3530 :    
3531 :     2. Some cleanup of the pgraph code to make it match the proposal that
3532 :     I put out the other day. (The proposal notwithstanding, things are
3533 :     still in flux here.)
3534 :    
3535 :     ----------------------------------------------------------------------
3536 : george 976 Name: Lal George
3537 :     Date: 2001/11/14 09:44:04 EST
3538 :     Tag:
3539 :     Description:
3540 :    
3541 :     Fix for a backpatching bug reported by Allen.
3542 :    
3543 :     Because the boundary between short and long span-dependent
3544 :     instructions is +/- 128, there are an astounding number of
3545 :     span-dependent instructions whose size is over estimated.
3546 :    
3547 :     Allen came up with the idea of letting the size of span
3548 :     dependent instructions be non-monotonic, for a maxIter
3549 :     number of times, after which the size must be monotonically
3550 :     increasing.
3551 :    
3552 :     This table shows the number of span-dependent instructions
3553 :     whose size was over-estimated as a function of maxIter, for the
3554 :     file Parse/parse/ml.grm.sml:
3555 :    
3556 :     maxIter # of instructions:
3557 :     10 687
3558 :     20 438
3559 :     30 198
3560 :     40 0
3561 :    
3562 :     In compiling the compiler, there is no significant difference in
3563 :     compilation speed between maxIter=10 and maxIter=40. Actually,
3564 :     my measurements showed that maxIter=40 was a tad faster than
3565 :     maxIter=10! Also 96% of the files in the compiler reach a fix
3566 :     point within 13 iterations, so fixing maxIter at 40, while high,
3567 :     is okay.
3568 :    
3569 :     ----------------------------------------------------------------------
3570 : blume 975 Name: Matthias Blume
3571 :     Date: 2001/10/31 15:25:00 EST
3572 :     Tag: blume-20011031-pgraph
3573 :     Description:
3574 :    
3575 :     CKIT:
3576 :     * Changed the "Function" constructor of type Ast.ctype to carry optional
3577 :     argument identifiers.
3578 :     * Changed the return type of TypeUtil.getFunction accordingly.
3579 :     * Type equality ignores the argument names.
3580 :     * TypeUtil.composite tries to preserve argument names but gives up quickly
3581 :     if there is a mismatch.
3582 :    
3583 :     installation script:
3584 :     * attempts to use "curl" if available (unless "wget" is available as well)
3585 :    
3586 :     CM:
3587 :     * has an experimental implementation of "portable graphs" which I will
3588 :     soon propose as an implementation-independent library format
3589 :     * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
3590 :    
3591 :     NLFFI-LIB:
3592 :     * some cleanup (all cosmetic)
3593 :    
3594 :     NLFFIGEN:
3595 :     * temporarily disabled the mechanism that suppresses ML output for
3596 :     C definitions whose identifiers start with an underscore character
3597 :     * generate val bindings for enum constants
3598 :     * user can request that only one style (light or heavy) is being used;
3599 :     default is to use both (command-line arguments: -heavy and -light)
3600 :     * fixed bug in handling of function types involving incomplete pointers
3601 :     * generate ML entry points that take record arguments (i.e., using
3602 :     named arguments) for C functions that have a prototype with named
3603 :     arguments
3604 :     (see changes to CKIT)
3605 :    
3606 :     ----------------------------------------------------------------------
3607 : leunga 972 Name: Allen Leung
3608 :     Date: 2001/10/27 20:34:00 EDT
3609 :     Tag: leunga-20011027-x86-fast-fp-call
3610 :     Description:
3611 :    
3612 :     Fixed the bug described in blume-20010920-slowfp.
3613 :    
3614 :     The fix involves
3615 :     1. generating FCOPYs in FSTP in ia32-svid
3616 :     2. marking a CALL with the appropriate annotation
3617 :    
3618 :     ----------------------------------------------------------------------
3619 : blume 961 Name: Matthias Blume
3620 :     Date: 2001/10/16 11:32:00 EDT
3621 :     Tag: blume-20011016-netbsd
3622 :     Description:
3623 :    
3624 :     Underscore patch from Chris Richards (fixing problem with compiling
3625 :     runtime system under recent NetBSD).
3626 :    
3627 :     ----------------------------------------------------------------------
3628 : george 959 Name: Allen Leung
3629 :     Date: 2001/10/12 17:18:32 EDT 2001
3630 :     Tag: leung-20011012-x86-printflowgraph
3631 :     Description:
3632 :    
3633 :     X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
3634 :    
3635 :     ----------------------------------------------------------------------
3636 : george 952 Name: Lal George
3637 : george 958 Date: 2001/10/11 23:51:34 EDT
3638 :     Tag: george-20011011-too-many-instrs
3639 :     Description:
3640 :    
3641 :     The representation of a program point never expected to see more
3642 :     than 65536 instructions in a basic block!
3643 :    
3644 :     ----------------------------------------------------------------------
3645 :     Name: Lal George
3646 : george 952 Date: 2001/10/09 09:41:37 EDT
3647 :     Tag: george-20011008-mlrisc-labels
3648 :     Description:
3649 :    
3650 :     Changed the machine description files to support printing of
3651 :     local and global labels in assembly code, based on host assembler
3652 :     conventions.
3653 :    
3654 :     ----------------------------------------------------------------------
3655 : blume 916 Name: Matthias Blume
3656 : blume 939 Date: 2001/09/25 15:25:00 EDT
3657 :     Tag: blume-20010925-exninfo
3658 :     Description:
3659 :    
3660 :     I provided a non-hook implementation of exnName (at the toplevel) and
3661 :     made the "dummy" implementation of exnMessage (at the toplevel) more
3662 :     useful: if nothing gets "hooked in", then at least you are going to
3663 :     see the exception name and a message indicating why you don't see more.
3664 :    
3665 :     [For the time being, programs that need exnMessage and want to use
3666 :     ml-build should either use General.exnMessage (strongly recommended) or
3667 :     refer to structure General at some other point so that CM sees a
3668 :     static dependency.]
3669 :    
3670 :     [Similar remarks go for "print" and "use": If you want to use their
3671 :     functionality in stand-alone programs generated by ml-build, then use
3672 :     TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
3673 :    
3674 :     ----------------------------------------------------------------------
3675 :     Name: Matthias Blume
3676 : blume 938 Date: 2001/09/20 17:28:00 EDT
3677 :     Tag: blume-20010920-slowfp
3678 :     Description:
3679 :    
3680 :     Allen says that x86-fast-fp is not safe yet, so I turned it off again...
3681 :    
3682 :     ----------------------------------------------------------------------
3683 :     Name: Matthias Blume
3684 : blume 937 Date: 2001/09/20 17:20:00 EDT
3685 :     Tag: blume-20010920-canonicalpaths
3686 :     Description:
3687 :    
3688 :     0. Updated the BOOT file (something that I forgot to do earlier).
3689 :    
3690 :     1. Small internal change to CM so that it avoids "/../" in filenames
3691 :     as much as possible (but only where it is safe).
3692 :    
3693 :     2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
3694 :     that arguments that contain delimiters are passed through correctly.
3695 :     This change also means that all "special" arguments of the form
3696 :     @SMLxxx... must come first.
3697 :    
3698 :     3. Changed install script to put relative anchor names for tool commands
3699 :     into pathconfig.
3700 :    
3701 :     ----------------------------------------------------------------------
3702 :     Name: Matthias Blume
3703 : blume 932 Date: 2001/09/18 15:35:00 EDT
3704 :     Tag: blume-20010918-readme11036
3705 :     Description:
3706 :    
3707 :     Added README files.
3708 :    
3709 :     ----------------------------------------------------------------------
3710 :     Name: Matthias Blume
3711 : blume 929 Date: 2001/09/18 11:45:00 EDT
3712 :     Tag: Release_110_36 (retag)
3713 :     Description:
3714 :    
3715 :     Fixed mistake in config/preloads. Retagged as 110.36.
3716 :    
3717 :     ----------------------------------------------------------------------
3718 :     Name: Matthias Blume
3719 : blume 928 Date: 2001/09/18 09:40:00 EDT
3720 : blume 929 Tag: Release_110_36_orig (tag changed)
3721 : blume 928 Description:
3722 :    
3723 :     New version (110.36). New bootfiles.
3724 :    
3725 :     ----------------------------------------------------------------------
3726 :     Name: Matthias Blume
3727 : blume 927 Date: 2001/09/14 16:15:00 EDT
3728 :     Tag: blume-20010914-x86fastfp
3729 :     Description:
3730 :    
3731 :     John committed some changes that Allen made, in particular a (hopefully)
3732 :     correctly working version of the x86-fp module.
3733 :    
3734 :     I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
3735 :     flag to "true". Everything seems to compile to a fixpoint ok, and
3736 :     "mandelbrot" speeds up by about 15%.
3737 :    
3738 :     ----------------------------------------------------------------------
3739 :     Name: Matthias Blume
3740 : blume 923 Date: 2001/09/13 11:20:00 EDT
3741 :     Tag: blume-20010913-minimal
3742 :     Description:
3743 :    
3744 :     1. Stefan Monnier's patch to fix a miscompilation problem that
3745 :     was brought to light by John Reppy's work on Moby.
3746 :    
3747 :     2. Implemented a minimal "structure Compiler" that contains just
3748 :     "version" and "architecture". The minimal version will be
3749 :     available when the full version is not. This is for backward-
3750 :     compatibility with code that wants to test Compiler.version.
3751 :    
3752 :     ----------------------------------------------------------------------
3753 :     Name: Matthias Blume
3754 : blume 920 Date: 2001/08/28 14:03:00 EDT
3755 :     Tag: blume-20010828-ml-lex
3756 :     Description:
3757 :    
3758 :     Fix for bug 1581, received from Neophytos Michael.
3759 :    
3760 :     ----------------------------------------------------------------------
3761 :     Name: Matthias Blume
3762 : blume 918 Date: 2001/08/27 11:20:00 EDT
3763 :     Tag: blume-20010827-readme11035
3764 :     Description:
3765 :    
3766 :     Fleshed out the README file for 110.35.
3767 :    
3768 :     ----------------------------------------------------------------------
3769 :     Name: Matthias Blume
3770 : blume 916 Date: 2001/08/24 17:10:00 EDT
3771 :     Tag: Release_110_35
3772 :     Description:
3773 :    
3774 :     New version number (110.35). New bootfiles.
3775 :    
3776 :     ----------------------------------------------------------------------
3777 : george 915 Name: Lal George
3778 : george 909 Date: 2001/08/24 13:47:18 EDT 2001
3779 :     Tag: george-20010824-MLRISC-graphs
3780 :     Description:
3781 :    
3782 :     removed clusters from MLRISC completely and replaced with graphs.
3783 :    
3784 :     ----------------------------------------------------------------------
3785 :     Name: Matthias Blume
3786 : blume 905 Date: 2001/08/23 17:50:00 EDT
3787 :     Tag: blume-20010823-toplevel
3788 :     Description:
3789 :    
3790 :     - some reorganization of the code that implements various kinds of
3791 :     environments in the compiler (static, dynamic, symbolic, combined)
3792 :     - re-implemented the EnvRef module so that evalStream works properly
3793 :     (if the stream contains references to "use", "CM.make", etc.)
3794 :     - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
3795 :    
3796 :     ----------------------------------------------------------------------
3797 :     Name: Matthias Blume
3798 : blume 904 Date: 2001/08/20 15:50 EDT
3799 :     Tag: blume20010820-slipup
3800 :     Description:
3801 :    
3802 :     I forgot to commit a few files. Here they are...
3803 :    
3804 :     ----------------------------------------------------------------------
3805 :     Name: Matthias Blume
3806 : blume 903 Date: 2001/08/20 15:35:00 EDT
3807 :     Tag: blume-20010820-debugprof
3808 :     Description:
3809 :    
3810 :     !!!! NEW BOOTFILES !!!!
3811 :    
3812 :     This is another round of reorganizing the compiler sources. This
3813 :     time the main goal was to factor out all the "instrumentation"
3814 :     passes (for profiling and backtracing) into their own library.
3815 :     The difficulty was to do it in such a way that it does not depend
3816 :     on elaborate.cm but only on elabdata.cm.
3817 :    
3818 :     Therefore there have been further changes to both elaborate.cm and
3819 :     elabdata.cm -- more "generic" things have been moved from the former
3820 :     to the latter. As a result, I was forced to split the assignment
3821 :     of numbers indicating "primtyc"s into two portions: SML-generic and
3822 :     SML/NJ-specific. Since it would have been awkward to maintain,
3823 :     I bit the bullet and actually _changed_ the mapping between these
3824 :     numbers and primtycs. The bottom line of this is that you need
3825 :     a new set of bin- and bootfiles.
3826 :    
3827 :     I have built new bootfiles for all architectures, so doing a fresh
3828 :     checkout and config/install.sh should be all you need.
3829 :    
3830 :     The newly created library's name is
3831 :    
3832 :     $smlnj/viscomp/debugprof.cm
3833 :    
3834 :     and its sources live under
3835 :    
3836 :     src/compiler/DebugProf
3837 :    
3838 :     ----------------------------------------------------------------------
3839 :     Name: Matthias Blume
3840 : blume 902 Date: 2001/08/15 17:15:00 EDT
3841 :     Tag: blume-20010815-compreorg
3842 :     Description:
3843 :    
3844 :     This is a first cut at reorganizing the CM libraries that make up the
3845 :     core of the compiler. The idea is to separate out pieces that could
3846 :     be used independently by tools, e.g., the parser, the typechecker, etc.
3847 :    
3848 :     The current status is a step in this direction, but it is not quite
3849 :     satisfactory yet. Expect more changes in the future.
3850 :    
3851 :     Here is the current (new) organization...
3852 :    
3853 :     What used to be $smlnj/viscomp/core.cm is now divided into
3854 :     six CM libraries:
3855 :    
3856 :     $smlnj/viscomp/basics.cm
3857 :     /parser.cm
3858 :     /elabdata.cm
3859 :     /elaborate.cm
3860 :     /execute.cm
3861 :     /core.cm
3862 :    
3863 :     The CM files for these libraries live under src/system/smlnj/viscomp.
3864 :     All these libraries are proxy libraries that contain precisely
3865 :     one CM library component. Here are the locations of the components
3866 :     (all within the src/compiler tree):
3867 :    
3868 :     Basics/basics.cm
3869 :     Parse/parser.cm
3870 :     ElabData/elabdata.cm
3871 :     Elaborator/elaborate.cm
3872 :     Execution/execute.cm
3873 :     core.cm
3874 :    
3875 :     [This organization is the same that has been used already
3876 :     for a while for the architecture-specific parts of the visible
3877 :     compiler and for the old version of core.cm.]
3878 :    
3879 :     As you will notice, many source files have been moved from their
3880 :     respective original locations to a new home in one of the above
3881 :     subtrees.
3882 :    
3883 :     The division of labor between the new libraries is the following:
3884 :    
3885 :     basics.cm:
3886 :     - Simple, basic definitions that pertain to many (or all) of
3887 :     the other libraries.
3888 :     parser.cm:
3889 :     - The SML parser, producing output of type Ast.dec.
3890 :     - The type family for Ast is also defined and exported here.
3891 :     elabdata.cm:
3892 :     - The datatypes that describe input and output of the elaborator.
3893 :     This includes types, absyn, and static environments.
3894 :     elaborator.cm:
3895 :     - The SML/NJ type checker and elaborator.
3896 :     This maps an Ast.dec (with a given static environment) to
3897 :     an Absyn.dec (with a new static environment).
3898 :     - This libraries implements certain modules that used to be
3899 :     structures as functors (to remove dependencies on FLINT).
3900 :     execute.cm:
3901 :     - Everything having to do with executing binary code objects.
3902 :     - Dynamic environments.
3903 :     core.cm:
3904 :     - SML/NJ-specific instantiations of the elaborator and MLRISC.
3905 :     - Top-level modules.
3906 :     - FLINT (this should eventually become its own library)
3907 :    
3908 :     Notes:
3909 :    
3910 :     I am not 100% happy with the way I separated the elaborator (and its
3911 :     data structures) from FLINT. Two instances of the same problem:
3912 :    
3913 :     1. Data structures contain certain fields that carry FLINT-specific
3914 :     information. I hacked around this using exn and the property list
3915 :     module from smlnj-lib. But the fact that there are middle-end
3916 :     specific fields around at all is a bit annoying.
3917 :    
3918 :     2. The elaborator calculates certain FLINT-related information. I tried
3919 :     to make this as abstract as I could using functorization, but, again,
3920 :     the fact that the elaborator has to perform calculations on behalf
3921 :     of the middle-end at all is not nice.
3922 :    
3923 :     3. Having to used exn and property lists is unfortunate because it
3924 :     weakens type checking. The other alternative (parameterizing
3925 :     nearly *everything*) is not appealing, though.
3926 :    
3927 :     I removed the "rebinding =" warning hack because due to the new organization
3928 :     it was awkward to maintain it. As a result, the compiler now issues some of
3929 :     these warnings when compiling init.cmi during bootstrap compilation. On
3930 :     the plus side, you also get a warning when you do, for example:
3931 :     val op = = Int32.+
3932 :     which was not the case up to now.
3933 :    
3934 :     I placed "assign" and "deref" into the _Core structure so that the
3935 :     code that deals with the "lazy" keyword can find them there. This
3936 :     removes the need for having access to the primitive environment
3937 :     during elaboration.
3938 :    
3939 :     ----------------------------------------------------------------------
3940 :     Name: Matthias Blume
3941 : blume 898 Date: 2001/08/13
3942 :     Tag: blume-20010813-closures
3943 :     Description:
3944 :    
3945 :     This fix was sent to us by Zhong Shao. It is supposed to improve the
3946 :     performance of certain loops by avoiding needless closure allocation.
3947 :    
3948 :     ----------------------------------------------------------------------
3949 : george 890 Name: Lal George
3950 : george 896 Date: 2001/07/31 10:03:23 EDT 2001
3951 :     Tag: george-20010731-x86-fmalloc
3952 :     Description: Fixed bug in x86 calls
3953 :    
3954 :     There was a bug where call instructions would mysteriously
3955 :     vanish. The call instruction had to be one that returned
3956 :     a floating point value.
3957 :    
3958 :     ----------------------------------------------------------------------
3959 :     Name: Lal George
3960 : george 890 Date: 2001/07/19 16:36:29 EDT 2001
3961 :     Tag: george-20010719-simple-cells
3962 :     Description:
3963 :    
3964 :     I have dramatically simplified the interface for CELLS in MLRISC.
3965 :    
3966 :     In summary, the cells interface is broken up into three parts:
3967 :    
3968 :     1. CellsBasis : CELLS_BASIS
3969 :    
3970 :     CellsBasis is a top level structure and common for all
3971 :     architectures. it contains the definitions of basic datatypes
3972 :     and utility functions over these types.
3973 :    
3974 :     2. functor Cells() : CELLS
3975 :    
3976 :     Cells generates an interface for CELLS that incorporates the
3977 :     specific resources on the target architecture, such as the
3978 :     presence of special register classes, their number and size,
3979 :     and various useful substructures.
3980 :    
3981 :     3. <ARCH>CELLS
3982 :    
3983 :     e.g. SparcCells: SPARCCELLS
3984 :    
3985 :     <ARCH>CELLS usually contains additional bindings for special
3986 :     registers on the architecture, such as:
3987 :    
3988 :     val r0 : cell (* register zero *)
3989 :     val y : cell (* Y register *)
3990 :     val psr : cell (* processor status register *)
3991 :     ...
3992 :    
3993 :     The structure returned by applying the Cells functor is opened
3994 :     in this interface.
3995 :    
3996 :     The main implication of all this is that the datatypes for cells is
3997 :     split between CellsBasis and CELLS -- a fairly simple change for user
3998 :     code.
3999 :    
4000 :     In the old scheme the CELLS interface had a definitional binding of
4001 :     the form:
4002 :    
4003 :     signature CELLS = sig
4004 :    
4005 :     structure CellsBasis = CellsBasis
4006 :    
4007 :     ...
4008 :    
4009 :     end
4010 :    
4011 :     With all the sharing constraints that goes on in MLRISC, this old
4012 :     design quickly leads to errors such as:
4013 :    
4014 :     "structure definition spec inside of sharing ... "
4015 :    
4016 :    
4017 :     and appears to require an unacceptable amount of sharing and where
4018 :     constraint hackery.
4019 :    
4020 :     I think this error message (the interaction of definitional specs and
4021 :     sharing) requires more explanation on our web page.
4022 :    
4023 :     ----------------------------------------------------------------------
4024 : blume 826 Name: Matthias Blume
4025 : blume 879 Date: 2001/07/19 15:00:00 EDT
4026 :     Tag: blume-20010719-libreorg
4027 :     Description:
4028 :    
4029 :     This update puts together a fairly extensive but straightforward change
4030 :     to the way the libraries that implement the interactive system are
4031 :     organized:
4032 :    
4033 :     The biggest change is the elimination of structure Compiler. As a
4034 :     replacement for this structure, there is now a CM library
4035 :     (known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
4036 :     that exports all the substructures of the original structure Compiler
4037 :     directly. So instead of saying Compiler.Foo.bar one now simply
4038 :     says Foo.bar. (The CM libraries actually export a collection of
4039 :     structures that is richer than the collection of substructures of
4040 :     structure Compiler.)
4041 :    
4042 :     To make the transition smooth, there is a separate library called
4043 :     $smlnj/compiler/compiler.cm which puts together and exports the
4044 :     original structure Compiler (or at least something very close to it).
4045 :    
4046 :     There are five members of the original structure Compiler
4047 :     that are not exported directly but which instead became members
4048 :     of a new structure Backend (described by signature BACKEND). These are:
4049 :     structure Profile (: PROFILE), structure Compile (: COMPILE), structure
4050 :     Interact (: INTERACT), structure Machine (: MACHINE), and val
4051 :     architecture (: string).
4052 :    
4053 :     Structure Compiler.Version has become structure CompilerVersion.
4054 :    
4055 :     Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
4056 :     by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
4057 :     or x86, respectively.
4058 :     Each of these exports the same frontend structures that
4059 :     $smlnj/compiler.cm exports. But they do not have a structure Backend
4060 :     and instead export some structure <Arch>Backend where <Arch> is Alpha32,
4061 :     Hppa, PPC, Sparc, or X86, respectively.
4062 :    
4063 :     Library $smlnj/compiler/all.cm exports the union of the exports of
4064 :     $smlnj/compiler/<arch>.cm
4065 :    
4066 :     There are no structures <Arch>Compiler anymore, use
4067 :     $smlnj/compiler/<arch>.cm instead.
4068 :    
4069 :     Library host-compiler-0.cm is gone. Instead, the internal library
4070 :     that instantiates CM is now called cm0.cm. Selection of the host
4071 :     compiler (backend) is no longer done here but. (Responsibility for it
4072 :     now lies with $smlnj/compiler/current.cm. This seems to be more
4073 :     logical.)
4074 :    
4075 :     Many individual files have been moved or renamed. Some files have
4076 :     been split into multiple files, and some "dead" files have been deleted.
4077 :    
4078 :     Aside from these changes to library organization, there are also changes
4079 :     to the way the code itself is organized:
4080 :    
4081 :     Structure Binfile has been re-implemented in such a way that it no
4082 :     longer needs any knowledge of the compiler. It exclusively deals
4083 :     with the details of binfile layout. It no longer invokes the
4084 :     compiler (for the purpose of creating new prospective binfile
4085 :     content), and it no longer has any knowledge of how to interpret
4086 :     pickles.
4087 :    
4088 :     Structure Compile (: COMPILE) has been stripped down to the bare
4089 :     essentials of compilation. It no longer deals with linking/execution.
4090 :     The interface has been cleaned up considerably.
4091 :    
4092 :     Utility routines for dealing with linking and execution have been
4093 :     moved into their own substructures.
4094 :    
4095 :     (The ultimate goal of these changes is to provide a light-weight
4096 :     binfile loader/linker (at least for, e.g., stable libraries) that
4097 :     does not require CM or the compiler to be present.)
4098 :    
4099 :     CM documentation has been updated to reflect the changes to library
4100 :     organization.
4101 :    
4102 :     ----------------------------------------------------------------------
4103 :     Name: Matthias Blume
4104 : blume 875 Date: 2001/07/10 17:30:00 EDT
4105 :     Tag: Release_110_34
4106 :     Description:
4107 :    
4108 : blume 876 Minor tweak to 110.34 (re-tagged):
4109 :    
4110 :     - README.html file added to CVS repository
4111 :     - runtime compiles properly under FreeBSD 3.X and 4.X
4112 :    
4113 :     ----------------------------------------------------------------------
4114 :     Name: Matthias Blume
4115 :     Date: 2001/07/10 17:30:00 EDT
4116 :     Tag: Release_110_34
4117 :     Description:
4118 :    
4119 : blume 875 New version number (110.34). New bootfiles.
4120 :    
4121 :     ----------------------------------------------------------------------
4122 :     Name: Matthias Blume
4123 : blume 874 Date: 2001/07/09 16:00:00 EDT
4124 :     Tag: blume-20010709-more-varargs
4125 :     Description:
4126 :    
4127 :     I changed the handling of varargs in ml-nlffigen again:
4128 :     The ellipsis ... will now simply be ignored (with an accompanying warning).
4129 :    
4130 :     The immediate effect is that you can actually call a varargs function
4131 :     from ML -- but you can't actually supply any arguments beyond the ones
4132 :     specified explicitly. (For example, you can call printf with its format
4133 :     string, but you cannot pass additional arguments.)
4134 :    
4135 :     This behavior is only marginally more useful than the one before, but
4136 :     it has the advantage that a function or, more importantly, a function
4137 :     type never gets dropped on the floor, thus avoiding follow-up problems with
4138 :     other types that refer to the offending one.
4139 :    
4140 :     ----------------------------------------------------------------------
4141 :     Name: Matthias Blume
4142 : blume 873 Date: 2001/07/09 11:25:00 EDT
4143 :     Tag: blume-20010709-varargs
4144 :     Description:
4145 :    
4146 :     1. ckit-lib.cm now exports structure Error
4147 :     2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
4148 :     with a warning accompanied by a source location. Moreover, it
4149 :     merely skips the offending function or type and proceeds with the
4150 :     rest of its work.u As a result, one can safely feed C code containing
4151 :     "..." to ml-nlffigen.
4152 :     3. There are some internal improvements to CM, providing slightly
4153 :     more general string substitutions in the tools subsystem.
4154 :    
4155 :     ----------------------------------------------------------------------
4156 :     Name: Matthias Blume
4157 : blume 854 Date: 2001/06/27 15:10:00 EDT
4158 :     Tag: blume-20010627-concur
4159 :     Description:
4160 :    
4161 :     Fixed a small bug in CM's handling of parallel compilation.
4162 :     (You could observe the bug by Control-C-interrupting an ordinary
4163 :     CMB.make or CM.stabilize and then attaching some compile servers.
4164 :     The result was that all of a sudden the previously interrupted
4165 :     compilation would continue on its own. This was because of
4166 :     an over-optimization: CM did not bother to clean out certain queues
4167 :     when no servers were attached "anyway", resulting in the contents
4168 :     of these queues to grab control when new servers did get attached.)
4169 :    
4170 :     There is also another minor update to the CM manual.
4171 :    
4172 :     ----------------------------------------------------------------------
4173 :     Name: Matthias Blume
4174 : blume 853 Date: 2001/06/26 16:15:00 EDT
4175 :     Tag: blume-20010626-cmdoc
4176 :     Description:
4177 :    
4178 :     Minor typo fixed in CM manual (syntax diagram for libraries).
4179 :    
4180 :     ----------------------------------------------------------------------
4181 :     Name: Matthias Blume
4182 : blume 852 Date: 2001/06/25 22:55:00 EDT
4183 :     Tag: blume-20010625-x86pc
4184 :     Description:
4185 :    
4186 :     Fixed a nasty bug in the X86 assembly code that caused signal
4187 :     handlers to fail (crash) randomly.
4188 :    
4189 :     ----------------------------------------------------------------------
4190 :     Name: Matthias Blume
4191 : blume 846 Date: 2001/06/25 12:05:00 EDT
4192 :     Tag: blume-20010625-nlffigen
4193 :     Description:
4194 :    
4195 :     This update fixes a number of minor bugs in ml-nlffigen as reported by
4196 :     Nick Carter <nbc@andrew.cmu.edu>.
4197 :    
4198 :     1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
4199 :     2. Default names for generated files are now derived from the name of
4200 :     the C file *without its directory*. In particular, this causes generated
4201 :     files to be placed locally even if the C file is in some system directory.
4202 :     3. Default names for generated signatures and structures are also derived
4203 :     from the C file name without its directory. This avoids silly things
4204 :     like "structure GL/GL".
4205 :     (Other silly names are still possible because ml-nlffigen does not do
4206 : blume 847 a thorough check of whether generated names are legal ML identifiers.
4207 :     When in doubt, use command line arguments to force particular names.)
4208 : blume 846
4209 :     ----------------------------------------------------------------------
4210 :     Name: Matthias Blume
4211 : blume 845 Date: 2001/06/21 12:25:00 EDT
4212 :     Tag: blume-20010621-eXene
4213 :     Description:
4214 :    
4215 :     eXene now compiles and (sort of) works again.
4216 :    
4217 :     The library name (for version > 110.33) is $/eXene.cm.
4218 :    
4219 :     I also added an new example in src/eXene/examples/nbody. See the
4220 :     README file there for details.
4221 :    
4222 :     ----------------------------------------------------------------------
4223 :     Name: Matthias Blume
4224 : blume 844 Date: 2001/06/20 16:40:00 EDT
4225 :     Tag: blume-20010620-cml
4226 :     Description:
4227 :    
4228 :     CML now compiles and works again.
4229 :    
4230 :     Libraries (for version > 110.33):
4231 :    
4232 :     $cml/cml.cm Main CML library.
4233 :     $cml/basis.cm CML's version of $/basis.cm.
4234 :     $cml/cml-internal.cm Internal helper library.
4235 :     $cml/core-cml.cm Internal helper library.
4236 :     $cml-lib/trace-cml.cm Tracing facility.
4237 :     $cml-lib/smlnj-lib.cm CML's version of $/smlnj-lib.cm
4238 :    
4239 :     The installer (config/install.sh) has been taught how to properly
4240 :     install this stuff.
4241 :    
4242 :     ----------------------------------------------------------------------
4243 :     Name: Matthias Blume
4244 : blume 843 Date: 2001/06/19 17:55:00 EDT
4245 :     Tag: blume-20010619-instantiate
4246 :     Description:
4247 :    
4248 :     This un-breaks the fix for bug 1432.
4249 :     (The bug was originally fixed in 110.9 but I broke it again some
4250 :     time after that.)
4251 :    
4252 :     ----------------------------------------------------------------------
4253 :     Name: Matthias Blume
4254 : blume 842 Date: 2001/06/19 17:25:00 EDT
4255 :     Tag: blume-20010619-signals
4256 :     Description:
4257 :    
4258 :     This should (hopefully) fix the long-standing signal handling bug.
4259 :     (The runtime system was constructing a continuation record with an
4260 :     incorrect descriptor which would cause the GC to drop data on the floor...)
4261 :    
4262 :     ----------------------------------------------------------------------
4263 :     Name: Matthias Blume
4264 : blume 840 Date: 2001/06/15 15:05:00 EDT
4265 : blume 841 Tag: blume-20010615-moresparc
4266 :     Description:
4267 :    
4268 :     Here is a short late-hour update related to Sparc c-calls:
4269 :    
4270 :     -- made handling of double-word arguments a bit smarter
4271 :    
4272 :     -- instruction selection phase tries to collapse certain clumsily
4273 :     constructed ML-Trees; typical example:
4274 :    
4275 :     ADD(ty,ADD(_,e,LI d1),LI d2) -> ADD(ty,e,LI(d1+d2))
4276 :    
4277 :     This currently has no further impact on SML/NJ since mlriscGen does
4278 :     not seem to generate such patterns in the first place, and c-calls
4279 :     (which did generate them in the beginning) has meanwhile been fixed
4280 :     so as to avoid them as well.
4281 :    
4282 :     ----------------------------------------------------------------------
4283 :     Name: Matthias Blume
4284 :     Date: 2001/06/15 15:05:00 EDT
4285 : blume 840 Tag: blume-20010615-sparc
4286 :     Description:
4287 :    
4288 :     The purpose of this update is to provide an implementation of NLFFI
4289 :     on Sparc machines.
4290 :    
4291 :     Here are the changes in detail:
4292 :    
4293 :     * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
4294 :     the Sparc implementation of the c-calls API.
4295 :     * The Sparc backend of SML/NJ has been modified to uniformely use %fp
4296 :     for acces