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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 1384 Name:
11 : george 1003 Date: yyyy/mm/dd
12 : dbm 570 Tag: <post-commit CVS tag>
13 :     Description:
14 : leunga 1142
15 : george 1136 ----------------------------------------------------------------------
16 : allenleung 1468 Name: Allen Leung (leunga (at) reservoir (dot) com)
17 :     Date: 2004/03/19 14:40:00 EST
18 :     Tag: leunga-20040319-cygwin-nlffi
19 :     Description:
20 :    
21 :     Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
22 :     of SML/NJ. The problem is that
23 :    
24 :     lib = dlopen(NULL, ...)
25 :     f = dlsym(lib, "malloc");
26 :    
27 :     does not work on Windows unless we explicitly export symbols
28 :     such as 'malloc' during linking. We fixed this by explicitly
29 :     exporting the required symbols with the magic gcc incantation:
30 :    
31 :     -Wl,--export-all cygwin.def
32 :    
33 :     where cygwin.def is a file containing all the symbols that
34 :     we wish to export.
35 :    
36 :     I suspect this is a Windows problem and we'll have to
37 :     do the same (somehow with windows compilers) when
38 :     we build the native win32 version with the system
39 :     calls LoadLibrary/GetProcAddress.
40 :    
41 :     ----------------------------------------------------------------------
42 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
43 : mblume 1465 Date: 2004/03/04 16:35:00 CST
44 :     Tag: blume-20040304-intinf-fmt
45 :     Description:
46 :    
47 :     Fixed problem with IntInf.fmt (sign would show up on the right instead
48 :     of on the left for BIN, OCT, and HEX).
49 :    
50 :     ----------------------------------------------------------------------
51 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
52 : mblume 1464 Date: 2004/03/04 11:25:00 CST
53 :     Tag: blume-20040304-symlinks
54 :     Description:
55 :    
56 :     Fixed problem with installer script (unix only) where bin/ml-yacc and
57 :     friends pointed (via symlinks) to absolute locations instead of just
58 :     .run-sml. This was reported by Vesa A Norrman.
59 :    
60 :     ----------------------------------------------------------------------
61 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
62 : mblume 1455 Date: 2004/02/13 14:50:00 CST
63 :     Tag: Release_110_45
64 :     Description:
65 :    
66 :     New working version (110.45). New bootfiles.
67 :    
68 :     ----------------------------------------------------------------------
69 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
70 : mblume 1448 Date: 2004/01/26 15:15:15 CST
71 :     Tag: blume-20040126-toplevel
72 :     Description:
73 :    
74 :     Improved handling of exceptions at the interactive toplevel.
75 :    
76 :     ----------------------------------------------------------------------
77 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
78 :     Date: 2004/01/26 11:25:00
79 : mblume 1446 Tag: blume-20040126-app
80 :     Description:
81 :    
82 :     Type of top-level "app" corrected.
83 : mblume 1447 Added code for setting vp_limitPtrMask to Win32-specific runtime.
84 : mblume 1446
85 :     ----------------------------------------------------------------------
86 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
87 : mblume 1427 Date: 2003/11/18 17:10 CST
88 :     Tag: blume-20031118-basis-fiddle
89 :     Description:
90 :    
91 :     - changed Timer interface to what might become the spec
92 :     - POSIX_FLAGS -> BIT_FLAGS according to spec
93 :     - some other minor discrepancies wrt. spec eliminated
94 :    
95 :     ----------------------------------------------------------------------
96 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
97 : mblume 1414 Date: 2003/11/06 12:00:00 CST
98 :     Tag: Release_110_44
99 :     Description:
100 :    
101 :     New working version (110.44). New bootfiles.
102 :    
103 :     ----------------------------------------------------------------------
104 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
105 : mblume 1411 Date: 2003/11/04 11:50:00 CST
106 :     Tag: blume-20031104-move-libraries
107 :     Description:
108 :    
109 :     Eliminated the "dont_move_libraries" directive in config/targets.
110 :     (The mechanism was broken and could not be fixed easily. Moreover,
111 :     there does not seem to be any reason not to move all libraries into
112 :     lib during installation. I originally implemented this directive as a
113 :     backward-compatibility feature when I first introduced the new CM.
114 :     Now that things have been stable for a long time and going back to the
115 :     old CM is not an option, there is no reason to keep it around.)
116 :    
117 :     ----------------------------------------------------------------------
118 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
119 : mblume 1409 Date: 2003/11/03 16:00:00 CST
120 :     Tag: blume-20031103-installdir
121 :     Description:
122 :    
123 :     Made installer honor INSTALLDIR variable again. (Thanks to Chris
124 :     Richards for pointing out the problem and providing the solution.)
125 :    
126 :     ----------------------------------------------------------------------
127 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
128 : mblume 1400 Date: 2003/10/01 17:05:00 CDT
129 :     Tag: blume-20031001-lal-mlrisc
130 :     Description:
131 :    
132 :     MLRISC bug fix from Lal.
133 :    
134 :     ----------------------------------------------------------------------
135 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
136 : mblume 1399 Date: 2003/09/30 16:10:00 CDT
137 :     Tag: blume-20030930-primio-bat
138 : mblume 1398 Description:
139 :    
140 :     1. Added openVector, nullRd, and nullWr to PRIM_IO.
141 :     2. Improved .bat files (for Win32 port) to make things work under Win95.
142 :     (thanks to Aaron S. Hawley for this one)
143 :    
144 :     ----------------------------------------------------------------------
145 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
146 : mblume 1395 Date: 2003/09/26 16:05:00 CDT
147 :     Tag: blume-20030926-wrappriv
148 :     Description:
149 :    
150 :     Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
151 :    
152 :     ----------------------------------------------------------------------
153 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
154 : mblume 1394 Date: 2003/09/26 15:00:00 CDT
155 :     Tag: blume-20030926-110_43_3
156 :     Description:
157 :    
158 :     - additional cleanup
159 :     - version number bump, NEW BOOTFILES
160 :    
161 :     ----------------------------------------------------------------------
162 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
163 : mblume 1393 Date: 2003/09/26 12:00:00 CDT
164 :     Tag: blume-20030926-ppautoload
165 :     Description:
166 :    
167 :     I modified the read-eval-print loop so that the autoloader gets
168 :     invoked whenever the prettyprinter tries to look up a symbol that
169 :     is not currently defined in the toplevel environment but which
170 :     appears in CM's autoload registry. As a result, we see far fewer of
171 :     those ?.Foo.Bar.xxx names in the prettyprinter's output.
172 :    
173 :     In addition to this I tried to clean up some pieces of the Basis
174 :     implementation (e.g., Socket, Word8Array) in order to prevent other
175 :     instances of these ?.Foo.Bar.xxx names from being printed.
176 :    
177 :     The mechanism that picks names for types still needs some work, though.
178 :     (Right now it seems that if there is a type A.t which is defined to
179 : mblume 1394 be B.u, but B is unavailable at toplevel, then A.t gets printed as
180 :     "?.B.u" although the perhaps more sensible solution would be to use
181 : mblume 1393 "A.t" in this case. In other words, the prettyprinter should follow
182 :     a chain of DEFtycs not farther than there are corresponding toplevel
183 :     names in the current environment.)
184 :    
185 :     ----------------------------------------------------------------------
186 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
187 : mblume 1391 Date: 2003/09/24 16:31:00 CDT
188 :     Tag: blume-20030924-installer
189 :     Description:
190 :    
191 :     Another installer tweak: All the ML code for the installer is now
192 :     compiled during CMB.make and put into a little library called
193 :     $smlnj/installer.cm. The installation then simply invokes
194 :    
195 :     sml -m $smlnj/installer.cm
196 :    
197 :     and everything happens automagically.
198 :    
199 :     Win32: ML code senses value of environment variable SMLNJ_HOME.
200 :     Unix: ML code senses values of environment variables ROOT, CONFIGDIR,
201 :     and BINDIR.
202 :    
203 :     The new scheme guarantees that the ML code responsible for the installation
204 :     is in sync with the APIs of the main system. Also, the installer is
205 :     somewhat faster because the installer script is precompiled.
206 :    
207 :     ----------------------------------------------------------------------
208 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
209 : mblume 1390 Date: 2003/09/24 15:35:00 CDT
210 :     Tag: blume-20030924-synsock
211 :     Description:
212 :    
213 :     Added a signature SYNCHRONOUS_SOCKET to basis.cm. This is like SOCKET
214 :     but excludes all non-blocking operations. Defined SOCKET (in Basis)
215 :     and CML_SOCKET in terms of SYNCHRONOUS_SOCKET. Removed superfluous
216 :     implementations of non-blocking operations from CML's Socket
217 :     structure.
218 :    
219 :     ----------------------------------------------------------------------
220 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
221 : mblume 1389 Date: 2003/09/24 15:10:05 CDT
222 :     Tag: blume-20030924-sockets
223 :     Description:
224 :    
225 :     1. Fixed SOCKET API and implementation to match Basis spec.
226 :     This required changing the internal representation of sockets to one
227 :     that remembers (for each socket file descriptor) whether it is currently
228 :     blocking or non-blocking. This state is maintained lazily (i.e., a system
229 :     call is made only if the state actually needs to change).
230 :    
231 :     2. OS-specific details of sockets were moved into separate files, thus
232 :     making it possible to unify the bulk of the socket implementations
233 :     between Unix and Win32.
234 :    
235 :     3. CML's socket API changed accordingly.
236 :     (Note that we need to remove non-blocking functions from this API
237 :     since they are redundant in the case of CML!)
238 :    
239 :     4. CML's socket implementation now makes use of non-blocking functions
240 :     provided by Basis, thus removing all OS-dependent code from this part
241 :     of CML.
242 :    
243 :     5. Changed Real64.precision from 52 to 53. Minor cleanup in Real64 code.
244 :    
245 :     ----------------------------------------------------------------------
246 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
247 : mblume 1387 Date: 2003/09/22 12:10:00 CDT
248 : mblume 1388 Tag: blume-20030922-110_43_2
249 : mblume 1387 Description:
250 :    
251 :     Made a new interim version and bootfiles for developer's bootstrapping
252 :     convenience.
253 :    
254 :     110.43.2 -- NEW BOOTFILES
255 :    
256 :     ----------------------------------------------------------------------
257 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
258 : mblume 1385 Date: 2003/09/19 15:55:00 CDT
259 :     Tag: blume-20030919-cmdir
260 :     Description:
261 :    
262 :     1. new-install.sh -> install.sh
263 :     2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
264 :     3. tweaked installer so that another name instead of .cm can be chosen
265 :     at install time (by setting the CM_DIR_ARC environment variable
266 :     during installation); once installation is complete, the name is
267 :     fixed
268 :    
269 :     ----------------------------------------------------------------------
270 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
271 : mblume 1384 Date: 2003/09/18 16:00:00 CDT
272 :     Tag: blume-20030918-110_43_1
273 :     Description:
274 :    
275 :     Made a new interim version and bootfiles for developer's bootstrapping
276 :     convenience.
277 :    
278 :     110.43.1 -- NEW BOOTFILES
279 :    
280 :     ----------------------------------------------------------------------
281 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
282 : mblume 1383 Date: 2003/09/18 15:20:00 CDT
283 :     Tag: blume-20030918-misc
284 :     Description:
285 :    
286 :     1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
287 :     this seems to be controversial at the moment) and used those in
288 :     Posix.ProcEnv.times.
289 :    
290 :     2. Added Time.{from,to}Nanoseconds to Time.
291 :    
292 :     3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
293 :     For example, fromLargeInt never needs to look at more than 3 "big
294 :     digits" to get its 53 bits of precision.
295 :    
296 :     ----------------------------------------------------------------------
297 : mblume 1384 Name: Matthias Blume (blume (at) tti - c (dot) org)
298 : mblume 1381 Date: 2003/09/17 16:30:00 CDT
299 :     Tag: blume-20030917-real32-slices
300 :     Description:
301 :    
302 :     Added an entry to the primitive environment
303 :     (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
304 :     added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
305 :    
306 :     Removed some of the "magic" constants in real64.sml and replaced them
307 :     with code that generates these values from their corresponding
308 :     integer counterparts.
309 :    
310 :     Made all(?) the slice-related changes to the Basis and made everything
311 :     compile again...
312 :    
313 :     ----------------------------------------------------------------------
314 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
315 : mblume 1375 Date: 2003/09/15 17:45:00 CDT
316 :     Tag: blume-20030915-rbase
317 :     Description:
318 :    
319 :     Fixed bug in Real.fromLargeInt.
320 :    
321 :     ----------------------------------------------------------------------
322 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
323 : mblume 1369 Date: 2003/09/13 18:11:00 CDT
324 :     Tag: blume-20030913-libinstall
325 :     Description:
326 :    
327 :     Minor bugfix in config/libinstall (set anchor with path to
328 :     standalone tool after installing it, otherwise libraries that
329 :     need ml-lex or ml-yacc won't compile the first time the installer
330 :     runs).
331 :    
332 :     ----------------------------------------------------------------------
333 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
334 : mblume 1368 Date: 2003/09/12 11:45:00 CDT
335 :     Tag: blume-20030912-various
336 :     Description:
337 :    
338 :     - fixed bug in Real.toLargeInt
339 :     - fixed bug in Posix.ProcEnv.times
340 :     - changed inputLine functions to return an option
341 :     - minor installer improvements / bugfixes
342 :     - changed default @SMLalloc parameter for x86/celeron to 64k
343 :    
344 :     ----------------------------------------------------------------------
345 :     Name: Matthias Blume (blume (at) tti - c (dot) org)
346 : mblume 1356 Date: 2003/09/09 22:00:00 CDT
347 :     Tag: Release_110_43
348 :     Description:
349 :    
350 :     New working release 110.43. New bootfiles.
351 :    
352 :     ----------------------------------------------------------------------
353 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
354 : mblume 1354 Date: 2003/09/09 19:20:00 CDT
355 :     Tag: blume-20030909-installer
356 :     Description:
357 :    
358 :     Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
359 :     Modified config/install.bat to take advantage of it. Also modified
360 :     config/install.sh (and called it config/new-install.sh) to take advantage
361 :     of it on Unix systems. (The SML code is (supposed to be) platform-
362 :     independent.)
363 :    
364 :     The installer can now install everything under Win32
365 :     as well as under *nix as long as it compiles.
366 :    
367 :     Other changes:
368 :    
369 :     - made CML compile again under Win32
370 :     - made eXene compile under Win32 (by providing a fake structure UnixSock
371 :     and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
372 :     - fixed a bug in nowhere: it assumed that type OS.Process.status is the
373 :     same as type int; under Win32 it isn't
374 :     - fixed some slice-related problems in the win32-specific parts of CML
375 :     - added a functor argument "sameVol" to os-path-fn.sml in the Basis
376 :     (under Win32, the volume name is case-insensitive, and the
377 :     OS.Path code compares volume names for equality)
378 :    
379 :     ----------------------------------------------------------------------
380 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
381 : mblume 1353 Date: 2003/09/08 11:55:00 CDT
382 :     Tag: blume-20030908-fullpath
383 :     Description:
384 :    
385 :     Made Win32 version of OS.FileSys.fullPath return current directory
386 :     when given an empty string. This is what the spec says, and incidentally,
387 :     CM depends on it. (CM otherwise goes into an infinite loop in certain
388 :     cases when presented with the name of a non-existing .cm file.)
389 :    
390 :     ----------------------------------------------------------------------
391 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
392 : mblume 1350 Date: 2003/09/04 16:30:00 CDT
393 : mblume 1352 Tag: blume-20030905-slices-etc
394 : mblume 1350 Description:
395 :    
396 :     1. Changed interface to vectors and arrays in Basis to match
397 :     (draft) Basis spec.
398 :     2. Added signatures and implementations of slices according to
399 :     Basis spec.
400 :     3. Edited source code throughout the system to make it compile again
401 :     under 1. and 2. (In some cases code had to be added to have it
402 :     match the new signatures.)
403 :     4. MLRISC should be backward-compatible: the copies of the originals
404 :     of files that needed to change under 3. were retained, the .cm files
405 :     check the compiler version number and use old versions when
406 :     appropriate.
407 :     5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
408 :     dirstream -> string option (in accordance with Basis spec).
409 :     6. When generating code that counts lines, ml-lex used function
410 :     CharVector.foldli, taking advantage of its old interface.
411 :     This has been replaced with the corresponding code from
412 :     CharVectorSlice. (html-lex must be re-lexed!)
413 :     7. BitArray in smlnj-lib/Util has been extended/modified to match the
414 :     new MONO_ARRAY signature. (Do we need BitArraySlice?)
415 :     8. Removed temporary additions (fromInternal, toInternal) from the
416 :     (now obsolete) IntInf in smlnj-lib/Util.
417 :     9. Cleaned up structure Byte.
418 :     10. Added localOffset, scan, and fromString to Date (according to spec).
419 :     Cleaned/corrected implementation of Date.
420 :     (Still need to check for correctness; implement better canonicalizeDate.)
421 :     11. Added "scan" to signature IEEE_REAL.
422 :     12. Some improvements to IntInf [in particular: efficiency-hack for
423 :     mod and rem when second operand is 2 (for parity checks).]
424 :     13. Changed representation of type Time.time, using a single IntInf.int
425 :     value counting microseconds. This considerably simplified the
426 :     implementation of structure Time. We now support negative time
427 :     values; scan and fromString handle signs.
428 :     14. Functor PrimIO now takes two additional arguments (VectorSlice and
429 :     ArraySlice).
430 :    
431 :     ----------------------------------------------------------------------
432 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
433 : mblume 1347 Date: 2003/08/28 17:00:00 CDT
434 :     Tag: blume-20030828-intinf
435 :     Description:
436 :    
437 :     This is a major update which comes with a version number bump
438 :     (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
439 :     and an implementation of IntInf in the Basis.
440 :    
441 :     There are a fairly large number of related changes and updates throughout
442 :     the system:
443 :    
444 :     Basis:
445 :     - Implemented IntInf.
446 :     - Made LargeInt a projection of IntInf (by filtering through INTEGER).
447 : mblume 1348 - Added some missing Real64 operations, most notably Real.toLargeInt.
448 : mblume 1347 - Added FixedInt as a synonym for Int32.
449 :    
450 :     compiler:
451 :     * Added support for a built-in intinf type.
452 :     - literals
453 :     - pattern matching
454 :     - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
455 :     - overloading on literals and operations
456 :    
457 :     This required adding a primitive type intinf, some additional
458 :     primops, and implementations for several non-trivial intinf
459 :     operations in Core. (The intinf type is completely abstract
460 :     to the compiler; all operations get delegated back to the Core.)
461 :    
462 :     * Intinf equality is handled by polyequal. However, the compiler
463 :     does not print its usual warning in this case (since polyequal
464 :     is the right thing to do there).
465 :    
466 :     * Improved the organization of structure InlineT.
467 :    
468 :     * A word about conversion primops:
469 :     If conversions involving intinf do not cancel out during
470 : mblume 1348 CPS contract, then the compiler must insert calls to Core functions.
471 : mblume 1347 Since all core access must be resolved already during the FLINT
472 :     translate phase, it would be too late a the time of CPS contract
473 : mblume 1348 to add new Core calls. For this reason, conversion primops
474 : mblume 1347 for intinf carry two arguments: 1. the numeric argument that
475 :     they are supposed to convert, and 2. the Core function that
476 :     can help with this conversion if necessary. If CPS contract
477 : mblume 1348 eliminates a primop, then the associated Core function becomes
478 :     dead and goes away. Intinf conversion primops that do not get
479 :     eliminated by CPS contract get rewritten into calls of their
480 :     core functions by a separate, new phase.
481 : mblume 1347
482 :     interactive system:
483 :     - Control.Print.intinfDepth controls max length of intinf constants
484 :     being printed. (Analogous to Control.Print.stringDepth.)
485 :     - Cleanup in printutil and pputil: got rid of unused stuff and
486 :     duplicates; replaced some of the code with code that makes better
487 :     use of library functionality.
488 :    
489 :     CM:
490 :     Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
491 :     are no longer silent.
492 :    
493 :     CKIT:
494 :     Fixed mismatched uses of Int32 and LargeInt. I always decided
495 :     in favor of LargeInt -- which is now the same as IntInf.
496 :     CKIT-knowledgable people should check whether this is what's
497 :     intended and otherwise change things back to using Int32 or
498 :     FixedInt.
499 :    
500 :     Throughout the code:
501 : mblume 1348 Started using IntInf.int literals and built-in operations
502 : mblume 1347 (e.g., comparison with 0) where this seems appropriate.
503 :    
504 :    
505 :     ----------------------------------------------------------------------
506 : macqueen 1343 Name: Dave MacQueen (dbm@cs.uchicago.edu)
507 :     Date: 2003/08/13 11:36:00 CDT
508 :     Tag: dbm-20030813-mcz-merge1
509 :     Description:
510 :    
511 :     Merging changes from the mcz-branch development branch into trunk.
512 :     These changes involve replacement of the emulated old prettyprinter
513 :     interface with direct use of the SML/NJ Lib PP library, and fixing
514 :     of a couple of bugs (895, 1186) relating to error messages. A new
515 :     prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
516 :     has been added.
517 :    
518 :     ----------------------------------------------------------------------
519 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
520 : mblume 1342 Date: 2003/08/11 15:45:00 CDT
521 :     Tag: blume-20030811-windows
522 :     Description:
523 :    
524 :     Version number bumped to 110.42.9. NEW BOOTFILES!!!
525 :    
526 :     http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
527 :    
528 :     This patch restores SML/NJ's ability to run under win32. There are a
529 :     number of changes, including fixes for several bugs that had gone
530 :     unnoticed until now:
531 :    
532 :     - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
533 :     trying to run the win32 version from within cygwin.)
534 :    
535 :     - There are a number of simple .bat scripts that substitute for their
536 :     corresponding Unix shell-scripts. (See below.)
537 :    
538 :     - The internals of ml-build have been modified slightly. The main
539 :     difference is that instead of calling ".link-sml" (or link-sml.bat)
540 :     using OS.Process.system, the ML process delegates this task back
541 :     to the script. Otherwise problems arise in mixed environments such
542 :     as Cygwin where scripts look and work like Unix scripts, but
543 :     where OS.Process.system cannot run them.
544 :    
545 :     - In CM, the srcpath pickler used native pathname syntax -- which
546 :     is incorrect in the case of cross-compilation. The new pickle format
547 :     is independent of platform-specific naming conventions.
548 :    
549 :     - Path configuration files (such as lib/pathconfig) can now choose
550 :     between native and standard syntax. Placing a line of the form
551 :    
552 :     standard!
553 :    
554 :     into the file causes all subsequent paths to be interpreted using
555 :     CM standard pathname syntax (= Unix conventions); a line
556 :    
557 :     native!
558 :    
559 :     switches back to native style. This was needed so that
560 :     path config files can be written portably, see src/system/pathconfig.
561 :    
562 :     - Runtime system:
563 :    
564 :     - win32-filesys.c: get_file_time and set_file_time now
565 :     access modification time, not creation time.
566 :    
567 :     - I/O code made aware of new array representation.
568 :    
569 :     - Bug fixes in X86.prim.masm.
570 :    
571 :     - src/system/makeml made aware of win32. (For use under cygwin
572 :     and other Unix-environments for windows.)
573 :    
574 :     - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
575 :     which caused BinIO.inputAll to fail consistently.
576 :    
577 :     .bat scripts:
578 :    
579 :     Windows .bat scripts assume that SMLNJ_HOME is defined.
580 :    
581 :     - sml.bat, ml-yacc.bat, ml-lex.bat: Driver scripts for standalone
582 :     applications (sml, ml-yacc, ml-lex).
583 :     - ml-build.bat: analogous to ml-build.
584 :     - config\install.bat: Analogous to config/install.sh. This requires
585 :     that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
586 :     (nmake etc. must be on the path, and vcvars32 must have been run.)
587 :     Moreover, sources for ml-lex and ml-yacc need to exist under src,
588 :     and the bootfile hierarchy must have been unpacked under
589 :     sml.boot.x86-win32.
590 :     The script is very primitive and does a poor job at error checking.
591 :     It only installs the base system, ml-lex, and ml-yacc. No other
592 :     libraries are being installed (i.e., you get only those that
593 :     are part of the compiler.)
594 :     - link-sml.bat: analogous to .link-sml, but not currently used
595 :    
596 :     Unrelated bug fixes:
597 :    
598 :     - ml-nlffigen now exports structures ST_* corresponding to incomplete
599 :     types.
600 :     - Added getDevice to PP/src/pp-debug-fn.sml. (Would not compile
601 :     otherwise.)
602 :    
603 :     ----------------------------------------------------------------------
604 : macqueen 1337 Name: Dave MacQueen (macqueen@cs.uchicago.edu)
605 :     Date: 2003/06/17
606 :     Tag: macqueen-20030617-bug895
607 :     Description:
608 :    
609 :     Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
610 :     Tag will be used for new development branch (mcz-branch) for
611 :     use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
612 :    
613 :     ----------------------------------------------------------------------
614 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
615 : mblume 1335 Date: 2003/05/27 16:55:00 CDT
616 :     Tag: blume-20030527-polyeq
617 :     Description:
618 :    
619 :     Tried to eliminated most cases of polymorphic equality.
620 :    
621 :     ----------------------------------------------------------------------
622 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
623 : mblume 1334 Date: 2003/05/21 17:45:00 CDT
624 :     Tag: blume-20030517-complete
625 :     Description:
626 :    
627 :     Two changes:
628 :    
629 :     1. Added a flag for controlling whether non-exhaustive bindings will
630 :     be treated as errors (default is false).
631 :     2. Cleaned up the *entire* source tree so that CMB.make goes through
632 :     without a single non-exhaustive match- or bind warning.
633 :    
634 :     ----------------------------------------------------------------------
635 : mblume 1368 Name: Matthias Blume (blume (at) tti - c (dot) org)
636 : mblume 1332 Date: 2003/05/17 10:20:00 CDT
637 :     Tag: blume-20030517-absyn
638 :     Description:
639 :    
640 :     1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
641 :    
642 :     This mainly affects the quality of error messages. However, some
643 :     of the code is now more straightforward than before. (Treatment of
644 :     the above four constructs in translate.sml is much simpler than
645 :     the "macro-expansion" that was going on before. Plus, the mach-
646 :     compiler no longer gets invoked just to be able to compile an
647 :     if-expression.)
648 :    
649 :     2. The ErrorMsg.Error exception is now caught and absorbed by the
650 :     interactive loop.
651 :    
652 :     ----------------------------------------------------------------------
653 : allenleung 1327 Name: Allen Leung
654 :     Date: 2003/05/16 13:05:00 CDT
655 :     Tag: leunga-20030516-cygwin-runtime
656 :     Description:
657 :    
658 :     Ported the runtime system to cygwin, which uses the unix
659 :     x86-unix bin files. Missing/buggy features:
660 :    
661 :     o getnetbyname, getnetbyaddr: these functions seem to be missing in
662 :     the Cygwin library.
663 :     o Ctrl-C handling may be flaky.
664 :     o Windows system calls and Windows I/O are not supported.
665 :    
666 :     A new set of binfiles is located at:
667 :    
668 :     http://www.dorsai.org/~leunga/boot.x86-unix.tgz
669 :    
670 :     This is only needed for bootstrapping the cygwin version of smlnj.
671 :     Other x86 versions can use the existing binfiles.
672 :    
673 :     ----------------------------------------------------------------------
674 : mblume 1317 Name: Matthias Blume
675 :     Date: 2003/04/08 15:42:00 CDT
676 :     Tag: blume-20030408-listpair
677 :     Description:
678 :    
679 :     1. Added a target 'mlrisc' to installer.
680 :    
681 :     2. Added missing elements to structure ListPair.
682 :    
683 :     ----------------------------------------------------------------------
684 : leunga 1296 Name: Allen Leung
685 :     Date: 2003/01/07 10:40:00 EST
686 :     Tag: leunga-20030107-int-rem
687 :     Description:
688 :    
689 :     Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
690 :     The arguments to the SUBL instruction were swapped.
691 :    
692 :     ----------------------------------------------------------------------
693 : blume 1229 Name: Matthias Blume
694 : blume 1294 Date: 2002/12/12 16:25:00 EST
695 :     Tag: blume-20021212-risc-ra
696 :     Description:
697 :    
698 :     Fixed a serious bug in the rewrite code for FP spilling/reloading that
699 :     sent the RA into an infinite loop when floating point registers get
700 :     spilled. (Because of this bug, e.g., nucleic stopped compiling between
701 :     110.37 and 110.38.)
702 :     There was another set of potential problems related to the handling of
703 :     MLRISC annotations (but those did not yet cause real problems, apparently).
704 :    
705 :     ----------------------------------------------------------------------
706 :     Name: Matthias Blume
707 : blume 1291 Date: 2002/12/06 22:40:00 EST
708 :     Tag: blume-20021206-cm-fileid
709 :     Description:
710 :    
711 :     Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
712 :     This fixes the problem of CM getting confused by files that suddenly
713 :     change their identity (e.g., by getting unlinked and recreated by some
714 :     text editor such as vi). There might be a better/cheaper/cleaner way
715 :     of doing this, but for now this will have to do.
716 :    
717 :     ----------------------------------------------------------------------
718 :     Name: Matthias Blume
719 : blume 1288 Date: 2002/10/28 09:50:00 EST
720 :     Tag: blume-20021028-typecheck
721 :     Description:
722 :    
723 :     Exported structure Typecheck from $smlnj/viscomp/core.cm.
724 :    
725 :     ----------------------------------------------------------------------
726 :     Name: Matthias Blume
727 : blume 1282 Date: 2002/10/17 09:10:00 EDT
728 : blume 1279 Tag: Release_110_42
729 :     Description:
730 :    
731 : blume 1282 In good old tradition, there has been a slight hiccup so that we have
732 :     to patch 110.42 after the fact. The old release tag has been replaced
733 :     (see below).
734 :    
735 :     The change solves a problem with two competing approaches the
736 :     configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
737 :     each other's way.
738 :    
739 :     This change only affects the runtime system code and the installer script.
740 :     (No new bootfiles.)
741 :    
742 :     ----------------------------------------------------------------------
743 :     Name: Matthias Blume
744 :     Date: 2002/10/16 12:00:00 EDT
745 :     Tag: Release_110_42_removed
746 :     Description:
747 :    
748 : blume 1279 New working release. New bootfiles.
749 :    
750 :     ----------------------------------------------------------------------
751 :     Name: Matthias Blume
752 : blume 1273 Date: 2002/10/10 13:10:00 EDT
753 :     Tag: blume-20021010-ppc-divs
754 :     Description:
755 :    
756 :     The mltree operator DIVS must be implemented with an overflow check on
757 :     the PPC because the hardware indicates divide-by-zero using "overflow" as
758 :     well.
759 :    
760 :     ----------------------------------------------------------------------
761 :     Name: Matthias Blume
762 : blume 1261 Date: 2002/07/23 11:45:00
763 :     Tag: blume-20020723-smlnj-home
764 :     Description:
765 :    
766 :     Sml now senses the SMLNJ_HOME environment variable. If this is set,
767 :     then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
768 :     CM_PATHCONFIG is also set), the path configuration file is assumed
769 :     to be in $SMLNJ_HOME/lib/pathconfig. This way one can easily move
770 :     the entire tree to some other place and everything will "just work".
771 :    
772 :     (Companion commands such as ml-build and ml-makedepend also sense this
773 :     variable.)
774 :    
775 :     ----------------------------------------------------------------------
776 :     Name: Matthias Blume
777 : blume 1259 Date: 2002/07/12 21:19:00 EDT
778 :     Tag: blume-20020712-liveness
779 :     Description:
780 :    
781 :     Exported two useful "step" functions from liveness module (MLRISC).
782 :    
783 :     ----------------------------------------------------------------------
784 :     Name: Matthias Blume
785 : blume 1253 Date: 2002/07/05 16:00 EDT
786 :     Tag: Release_110_41
787 :     Description:
788 :    
789 :     New working release. New bootfiles.
790 :    
791 :     ----------------------------------------------------------------------
792 :     Name: Matthias Blume
793 : blume 1250 Date: 2002/07/05 10:25:00 EDT
794 :     Tag: blume-20020705-btimp
795 :     Description:
796 :    
797 :     Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
798 :     other clients can set up backtracing support.
799 :    
800 :     ----------------------------------------------------------------------
801 :     Name: Matthias Blume
802 : blume 1249 Date: 2002/06/25 17:23:00 EDT
803 :     Tag: blume-20020625-fpmax
804 :     Description:
805 :    
806 :     Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
807 :     case. (The sense of the isNaN test was reversed -- which made min and
808 :     max always return their first argument.)
809 :    
810 :     ----------------------------------------------------------------------
811 :     Name: Matthias Blume
812 : blume 1240 Date: 2002/06/11
813 :     Tag: blume-20020611-unixpath
814 :     Description:
815 :    
816 :     Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
817 :    
818 :     ----------------------------------------------------------------------
819 :     Name: Matthias Blume
820 : blume 1238 Date: 2002/06/10 16:35:00 EDT
821 :     Tag: blume-20020610-ieeereal
822 :     Description:
823 :    
824 :     I back-ported my implementation of IEEEReal.fromString from the
825 :     idlbasis-devel branch so that we can test it.
826 :    
827 :     Another small change is that ppDec tries to give more information
828 :     than just "<sig>" in the case of functors. However, this code is
829 :     broken in some mysterious way if the functor's body's signature
830 :     has not been declared by ascription but gets inferred from the
831 :     implementation. This needs fixing...
832 :    
833 :     ----------------------------------------------------------------------
834 :     Name: Matthias Blume
835 : blume 1229 Date: 2002/05/31
836 :     Tag: blume-20020531-btrace-mode
837 :     Description:
838 :    
839 :     Resurrected SMLofNJ.Internals.BTrace.mode. (It accidentally fell by
840 :     the wayside when I switched over to using Controls everywhere.)
841 :    
842 :     ----------------------------------------------------------------------
843 : george 1222 Name: Lal George
844 :     Date: 2002/05/23 12:21:40 EDT
845 :     Tag: george-20020523-visual-labels
846 :     Description:
847 :    
848 :     Labels are now displayed in the graphical output to make
849 :     the fall-through and target blocks obvious.
850 :    
851 :     ----------------------------------------------------------------------
852 : blume 1204 Name: Matthias Blume
853 : blume 1220 Date: 2002/05/22 11:03:00 EDT
854 :     Tag: blume-20020522-shrink
855 :     Description:
856 :    
857 :     John tweaked yesterday's fix for 1131 to handle an out-of-memory
858 :     situation that comes up when allocating huge arrays.
859 :    
860 :     ----------------------------------------------------------------------
861 :     Name: Matthias Blume
862 : blume 1215 Date: 2002/05/21 16:00:00 EDT
863 :     Tag: Release_110_40
864 :     Description:
865 :    
866 :     New working release (110.40). New bootfiles.
867 :    
868 :     [Also: John Reppy fixed GC bug 1131.]
869 :    
870 :     ----------------------------------------------------------------------
871 :     Name: Matthias Blume
872 : blume 1212 Date: 2002/05/21 12:35:00 EDT
873 :     Tag: blume-20020521-cmdoc
874 :     Description:
875 :    
876 :     CM documentation update.
877 :    
878 :     ----------------------------------------------------------------------
879 :     Name: Matthias Blume
880 : blume 1211 Date: 2002/05/21 10:55:00 EDT
881 :     Tag: blume-20020521-misc
882 :     Description:
883 :    
884 :     - John tweaked runtime to be silent on heap export (except when
885 :     GC messages are on).
886 :     - I added a few more things (cross-compiling versions of CMB) to
887 :     config/preloads (as suggestions).
888 :    
889 :     ----------------------------------------------------------------------
890 :     Name: Matthias Blume
891 : blume 1208 Date: 2002/05/20 22:25:00 EDT
892 :     Tag: blume-20020520-controls
893 :     Description:
894 :    
895 :     - Added ControlUtil structure to control-lib.cm.
896 :     - Use it throughout.
897 :     - Used Controls facility to define MLRISC controls (as opposed to
898 :     registering MLRISC control ref cells with Controls after the fact)
899 :     - Fixed messed-up controls priorities.
900 :    
901 :     * Removed again all the stuff from config/preloads that one wouldn't
902 :     be able to preload at the time the initial heap image is built.
903 :     (Many libraries, e.g., CML, do not exist yet at this time. The
904 :     only libraries that can be preloaded via config/preloads are those
905 :     that come bundled with the bootfiles.)
906 :    
907 :     ----------------------------------------------------------------------
908 :     Name: Matthias Blume
909 : blume 1204 Date: 2002/05/20 10:59:00 EDT
910 :     Tag: blume-20020520-preloads
911 :     Description:
912 :    
913 :     Added a lot of commented-out suggestions for things to be included
914 :     in config/preloads.
915 :    
916 :     ----------------------------------------------------------------------
917 : leunga 1203 Name: Allen Leung
918 :     Date: 2002/05/18 14:20:00 EDT
919 :     Tag: leunga-20020518-mdl
920 :     Description:
921 :    
922 :     o Made the mdl tool stuff compile and run again.
923 :     o I've disabled all the stuff that depends on RTL specifications; they
924 :     are all badly broken anyway.
925 :    
926 :     ----------------------------------------------------------------------
927 : blume 1201 Name: Matthias Blume
928 :     Date: 2002/05/17 16:49:00 EDT
929 :     Tag: blume-20020517-controls
930 :     Description:
931 :    
932 :     0. John Reppy made several modifications to the SML/NJ library.
933 :     In particular, there is a shiny new controls-lib.cm.
934 :    
935 :     1. Pushed new controls interface through compiler so that everything
936 :     compiles again.
937 :    
938 :     2. Added FormatComb and FORMAT_COMB to the CML version of the
939 :     SML/NJ library (so that CML compiles again).
940 :    
941 :     3. Modified init scripts because XXX_DEFAULT environment variables
942 :     are no longer with us. (Boot-time initialization is now done
943 :     using the same environment variables that are also used for
944 :     startup-time initialization of controls.)
945 :    
946 :     ----------------------------------------------------------------------
947 : george 1192 Name: Lal George
948 :     Date: 2002/05/15 09:20:10 EDT
949 :     Tag: george-20020515-pseudo-op-decls
950 :     Description:
951 :    
952 :     All pseudo-ops emitted before the first segment declaration
953 :     such as TEXT, DATA, and BSS directives are assumed to be global
954 :     declarations and are emitted first in the assembly file. This is
955 :     useful in a number of situations where one has pseudo-ops that are not
956 :     specific to any segment, and also works around the constraint that one
957 :     cannot have client pseudo-ops in the TEXT segment.
958 :    
959 :     Because no segment is associated with these declarations it is
960 :     an error to allocate any space or objects before the first segment
961 :     directive and an exception will be raised. However, we cannot make
962 :     this check for client pseudo-ops.
963 :    
964 :     These top level declarations are a field in the CFG graph_info.
965 :     In theory you can continue to add to this field after the CFG has been
966 :     built -- provided you know what you are doing;-)
967 :    
968 :     ----------------------------------------------------------------------
969 : blume 1175 Name: Matthias Blume
970 : blume 1190 Date: 2002/05/13 16:40:00 EDT
971 :     Tag: blume-20020513-pp-etc
972 :     Description:
973 :    
974 :     A few minor bugfixes:
975 :    
976 :     - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
977 :     (Bogus printouts for redefined bindings still occur. Compiler
978 :     bug should no longer occur now. We need to redo the prettyprinter
979 :     from scratch.)
980 :    
981 :     - CM pathname printer now also adds escape sequences for ( and )
982 :    
983 :     - commend and docu fixes for ml-nlffi
984 :    
985 :     ----------------------------------------------------------------------
986 :     Name: Matthias Blume
987 : blume 1189 Date: 2002/05/10 16:40:00 EDT
988 :     Tag: blume-20020510-erg-textio
989 :     Description:
990 :    
991 :     Applied the following bugfix provided by Emden Gansner:
992 :    
993 :     Output is corrupted when outputSubstr is used rather than output.
994 :    
995 :     The problem occurs when a substring
996 :    
997 :     ss = (s, dataStart, dataLen)
998 :    
999 :     where dataStart > 0, fills a stream buffer with avail bytes left.
1000 :     avail bytes of s, starting at index dataStart, are copied into the
1001 :     buffer, the buffer is flushed, and then the remaining dataLen-avail
1002 :     bytes of ss are copied into the beginning of the buffer. Instead of
1003 :     starting this copy at index dataStart+avail in s, the current code
1004 :     starts the copy at index avail.
1005 :    
1006 :     Fix:
1007 :     In text-io-fn.sml, change line 695 from
1008 :     val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
1009 :     to
1010 :     val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
1011 :    
1012 :     ----------------------------------------------------------------------
1013 :     Name: Matthias Blume
1014 : blume 1186 Date: 2002/04/12 13:55:00 EDT
1015 :     Tag: blume-20020412-assyntax
1016 :     Description:
1017 :    
1018 :     1. Grabbed newer assyntax.h from the XFree86 project.
1019 :     2. Fiddled with how to compile X86.prim.asm without warnings.
1020 :     3. (Very) Minor cleanup in CM.
1021 :    
1022 :     ----------------------------------------------------------------------
1023 :     Name: Matthias Blume
1024 : blume 1185 Date: 2002/04/01 (no joke!) 17:07:00 EST
1025 :     Tag: blume-20020401-x86div
1026 :     Description:
1027 :    
1028 :     Added full support for div/mod/rem/quot on the x86, using the machine
1029 :     instruction's two results (without clumsily recomputing the remainder)
1030 :     directly where appropriate.
1031 :    
1032 :     Some more extensive power-of-two support was added to the x86 instruction
1033 :     selector (avoiding expensive divs, mods, and muls where they can be
1034 :     replaced with cheaper shifts and masks). However, this sort of thing
1035 :     ought to be done earlier, e.g., within the CPS optimizer so that
1036 :     all architectures benefit from it.
1037 :    
1038 :     The compiler compiles to a fixed point, but changes might be somewhat
1039 :     fragile nevertheless. Please, report any strange things that you might
1040 :     see wrt. div/mod/quot/rem...
1041 :    
1042 :     ----------------------------------------------------------------------
1043 :     Name: Matthias Blume
1044 : blume 1184 Date: 2002/03/29 17:22:00
1045 :     Tag: blume-20020329-div
1046 :     Description:
1047 :    
1048 :     Fixed my broken div/mod logic. Unfortunately, this means that the
1049 :     inline code for div/mod now has one more comparison than before.
1050 :     Fast paths (quotient > 0 or remainder = 0) are not affected, though.
1051 :     The problem was with quotient = 0, because that alone does not tell
1052 :     us which way the rounding went. One then has to look at whether
1053 :     remainder and divisor have the same sign... :(
1054 :    
1055 :     Anyway, I replaced the bootfiles with fresh ones...
1056 :    
1057 :     ----------------------------------------------------------------------
1058 :     Name: Matthias Blume
1059 : blume 1183 Date: 2002/03/29 14:10:00 EST
1060 :     Tag: blume-20020329-inlprims
1061 :     Description:
1062 :    
1063 :     NEW BOOTFILES!!! Version number bumped to 110.39.3.
1064 :    
1065 :     Primops have changed. This means that the bin/boot-file formats have
1066 :     changed as well.
1067 :    
1068 :     To make sure that there is no confusion, I made a new version.
1069 :    
1070 :    
1071 :     CHANGES:
1072 :    
1073 :     * removed REMT from mltree (remainder should never overflow).
1074 :    
1075 :     * added primops to deal with divisions of all flavors to the frontend
1076 :    
1077 :     * handled these primops all the way through so they map to their respective
1078 :     MLRISC support
1079 :    
1080 :     * used these primops in the implementation of Int, Int32, Word, Word32
1081 :    
1082 :     * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
1083 :    
1084 :     * parameterized INLMIN, INLMAX, and INLABS by a numkind
1085 :    
1086 :     * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
1087 :     floating point
1088 :    
1089 :     * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
1090 :     and Real (but Real.abs maps to a separate floating-point-only primop)
1091 :    
1092 :    
1093 :     TODO items:
1094 :    
1095 :     * Hacked Alpha32 instruction selection, disabling the selection of REMx
1096 :     instructions because the machine instruction encoder cannot handle
1097 :     them. (Hppa, PPC, and Sparc instruction selection did not handle
1098 :     REM in the first place, and REM is supported by the x86 machine coder.)
1099 :    
1100 :     * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
1101 :     selection phase. (The two can be streamlined because the hardware
1102 :     delivers both quotient and remainder at the same time anyway.)
1103 :    
1104 :     * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
1105 :     (Currently the behavior is inconsistent both across architectures and
1106 :     wrt. the draft Basis spec.)
1107 :    
1108 :     * Word8 should eventually be handled natively, too.
1109 :    
1110 :     * There seems to be one serious bug in mltree-gen.sml. It appears, though,
1111 :     as if there currently is no execution path that could trigger it in
1112 :     SML/NJ. (The assumptions underlying functions arith and promotable do not
1113 :     hold for things like multiplication and division.)
1114 :    
1115 :     ----------------------------------------------------------------------
1116 :     Name: Matthias Blume
1117 : blume 1181 Date: 2002/03/27 16:27:00 EST
1118 :     Tag: blume-20020327-mlrisc-divisions
1119 :     Description:
1120 :    
1121 :     Added support for all four division operations (ML's div, mod, quot,
1122 :     and rem) to MLRISC. In the course of doing so, I also rationalized
1123 :     the naming (no more annoying switch-around of DIV and QUOT), by
1124 :     parameterizing the operation by div_rounding_mode (which can be either
1125 :     DIV_TO_ZERO or DIV_TO_NEGINF).
1126 :    
1127 :     The generic MLTreeGen functor takes care of compiling all four
1128 :     operations down to only round-to-zero div.
1129 :    
1130 :     Missing pieces:
1131 :    
1132 :     * Doing something smarter than relying on MLTreeGen on architectures
1133 :     like, e.g., the x86 where hardware division delivers both quotient and
1134 :     remainder at the same time. With this, the implementation of the
1135 :     round-to-neginf operations could be further streamlined.
1136 :    
1137 :     * Remove inlining support for div/mod/rem from the frontend and replace it
1138 :     with primops that get carried through to the backend. Do this for all
1139 :     int and word types.
1140 :    
1141 :     ----------------------------------------------------------------------
1142 :     Name: Matthias Blume
1143 : blume 1180 Date: 2002/03/25 17:25:00 EST
1144 :     Tag: blume-20020325-divmod
1145 :     Description:
1146 :    
1147 :     I improved (hopefully without breaking them) the implementation of Int.div,
1148 :     Int.mod, and Int.rem. For this, the code in translate.sml now takes
1149 :     advantage of the following observations:
1150 :    
1151 :     Let q = x quot y r = x rem y
1152 :     d = x div y m = x mod y
1153 :    
1154 :     where "quot" is the round-to-zero version of integer division that
1155 :     hardware usually provides. Then we have:
1156 :    
1157 :     r = x - q * y where neither the * nor the - will overflow
1158 :     d = if q >= 0 orelse x = q * y then q else q - 1
1159 :     where neither the * nor the - will overflow
1160 :     m = if q >= 0 orelse r = 0 then r else r + y
1161 :     where the + will not overflow
1162 :    
1163 :     This results in substantial simplification of the generated code.
1164 :     The following table shows the number of CFG nodes and edges generated
1165 :     for
1166 :     fun f (x, y) = x OPER y
1167 :     (* with OPER \in div, mod, quot, rem *)
1168 :    
1169 :    
1170 :     OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
1171 :     --------------------------------------------------------
1172 :     div | 24 | 39 | 12 | 16
1173 :     mod | 41 | 71 | 12 | 16
1174 :     quot | 8 | 10 | 8 | 10
1175 :     rem | 10 | 14 | 8 | 10
1176 :    
1177 :    
1178 :     ----------------------------------------------------------------------
1179 :     Name: Matthias Blume
1180 : blume 1179 Date: 2002/03/25 22:06:00 EST
1181 :     Tag: blume-20020325-cprotobug
1182 :     Description:
1183 :    
1184 :     Fixed a bug in cproto (c prototype decoder).
1185 :    
1186 :     ----------------------------------------------------------------------
1187 :     Name: Matthias Blume
1188 : blume 1178 Date: 2002/03/25 16:00:00 EST
1189 :     Tag: blume-20020325-raw-primops
1190 :     Description:
1191 :    
1192 :     I did some cleanup to Allen's new primop code and
1193 :     replaced yesterday's bootfiles with new ones.
1194 :     (But they are stored in the same place.)
1195 :    
1196 :     ----------------------------------------------------------------------
1197 :     Name: Matthias Blume
1198 : blume 1175 Date: 2002/03/24 22:40:00 EST
1199 :     Tag: blume-20020324-bootfiles
1200 :     Description:
1201 :    
1202 :     Made the bootfiles that Allen asked for.
1203 :    
1204 :     ----------------------------------------------------------------------
1205 : leunga 1174 Name: Allen Leung
1206 :     Date: 2002/03/23 15:50:00 EST
1207 :     Tag: leunga-20020323-flint-cps-rcc-primops
1208 :     Description:
1209 :    
1210 :     1. Changes to FLINT primops:
1211 :    
1212 :     (* make a call to a C-function;
1213 :     * The primop carries C function prototype information and specifies
1214 :     * which of its (ML-) arguments are floating point. C prototype
1215 :     * information is for use by the backend, ML information is for
1216 :     * use by the CPS converter. *)
1217 :     | RAW_CCALL of { c_proto: CTypes.c_proto,
1218 :     ml_args: ccall_type list,
1219 :     ml_res_opt: ccall_type option,
1220 :     reentrant : bool
1221 :     } option
1222 :     (* Allocate uninitialized storage on the heap.
1223 :     * The record is meant to hold short-lived C objects, i.e., they
1224 :     * are not ML pointers. With the tag, the representation is
1225 :     * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
1226 :     *)
1227 :     | RAW_RECORD of {tag:bool,sz:int}
1228 :     and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
1229 :    
1230 :     2. These CPS primops are now overloaded:
1231 :    
1232 :     rawload of {kind:numkind}
1233 :     rawstore of {kind:numkind}
1234 :    
1235 :     The one argument form is:
1236 :    
1237 :     rawload {kind} address
1238 :    
1239 :     The two argument form is:
1240 :    
1241 :     rawload {kind} [ml object, byte-offset]
1242 :    
1243 :     3. RAW_CCALL/RCC now takes two extra arguments:
1244 :    
1245 :     a. The first is whether the C call is reentrant, i.e., whether
1246 :     ML state should be saved and restored.
1247 :     b. The second argument is a string argument specifying the name of
1248 :     library and the C function.
1249 :    
1250 :     These things are currently not handled in the code generator, yet.
1251 :    
1252 :     4. In CProto,
1253 :    
1254 :     An encoding type of "bool" means "ml object" and is mapped into
1255 :     C prototype of PTR. Note that "bool" is different than "string",
1256 :     even though "string" is also mapped into PTR, because "bool"
1257 :     is assigned an CPS type of BOGt, while "string" is assigned INT32t.
1258 :    
1259 :     5. Pickler/unpicker
1260 :    
1261 :     Changed to handle RAW_RECORD and newest RAW_CCALL
1262 :    
1263 :     6. MLRiscGen,
1264 :    
1265 :     1. Changed to handle the new rawload/rawstore/rawrecord operators.
1266 :     2. Code for handling C Calls has been moved to a new module CPSCCalls,
1267 :     in the file CodeGen/cpscompile/cps-c-calls.sml
1268 :    
1269 :     7. Added the conditional move operator
1270 :    
1271 :     condmove of branch
1272 :    
1273 :     to cps. Generation of this is still buggy so it is currently
1274 :     disabled.
1275 :    
1276 :     ----------------------------------------------------------------------
1277 : george 1168 Name: Lal George
1278 :     Date: 2002/03/22 14:18:25 EST
1279 : george 1171 Tag: george-20020322-cps-branch-prob
1280 : george 1168 Description:
1281 :    
1282 : george 1171 Implemented the Ball-Larus branch prediction-heuristics, and
1283 : george 1168 incorporated graphical viewers for control flow graphs.
1284 :    
1285 : george 1171 Ball-Larus Heuristics:
1286 : george 1168 ---------------------
1287 :     See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
1288 :    
1289 :     By design it uses the Dempster-Shafer theory for combining
1290 :     probabilities. For example, in the function:
1291 :    
1292 :     fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
1293 :    
1294 :     the ball-larus heuristics predicts that the n=0 is unlikely
1295 :     (OH-heuristic), and the 'then' branch is unlikely because of the
1296 :     RH-heuristic -- giving the 'then' branch an even lower combined
1297 : george 1171 probability using the Dempster-Shafer theory.
1298 : george 1168
1299 :     Finally, John Reppy's loop analysis in MLRISC, further lowers the
1300 :     probability of the 'then' branch because of the loop in the else
1301 :     branch.
1302 :    
1303 :    
1304 :     Graphical Viewing:
1305 :     ------------------
1306 :     I merely plugged in Allen's graphical viewers into the compiler. The
1307 :     additional code is not much. At the top level, saying:
1308 :    
1309 :     Control.MLRISC.getFlag "cfg-graphical-view" := true;
1310 :    
1311 :     will display the graphical view of the control flow graph just before
1312 :     back-patching. daVinci must be in your path for this to work. If
1313 :     daVinci is not available, then the default viewer can be changed
1314 :     using:
1315 :    
1316 :     Control.MLRISC.getString "viewer"
1317 :    
1318 :     which can be set to "dot" or "vcg" for the corresponding viewers. Of
1319 :     course, these viewers must be in your path.
1320 :    
1321 :     The above will display the compilation unit at the level of clusters,
1322 :     many of which are small, boring, and un-interesting. Also setting:
1323 :    
1324 :     Control.MLRISC.getInt "cfg-graphical-view_size"
1325 :    
1326 :     will display clusters that are larger than the value set by the above.
1327 :    
1328 :    
1329 :     ----------------------------------------------------------------------
1330 : blume 1159 Name: Matthias Blume
1331 :     Date: 2002/03/21 22:20:00 EST
1332 :     Tag: blume-20020321-kmp-bugfix
1333 :     Description:
1334 :    
1335 :     Changed the interface to the KMP routine in PreString and fixed
1336 :     a minor bug in one place where it was used.
1337 :    
1338 :     ----------------------------------------------------------------------
1339 : leunga 1156 Name: Allen Leung
1340 : leunga 1158 Date: 2002/03/21 20:30:00 EST
1341 :     Tag: leunga-20020321-cfg
1342 :     Description:
1343 :    
1344 :     Fixed a potential problem in cfg edge splitting.
1345 :    
1346 :     ----------------------------------------------------------------------
1347 :     Name: Allen Leung
1348 : leunga 1156 Date: 2002/03/21 17:15:00 EST
1349 :     Tag: leunga-20020321-x86-fp-cfg
1350 :     Description:
1351 :    
1352 :     1. Recoded the buggy parts of x86-fp.
1353 :    
1354 :     a. All the block reordering code has been removed.
1355 :     We now depend on the block placement phases to do this work.
1356 :    
1357 :     b. Critical edge splitting code has been simplified and moved into the
1358 :     CFG modules, as where they belong.
1359 :    
1360 :     Both of these were quite buggy and complex. The code is now much, much
1361 :     simpler.
1362 :    
1363 :     2. X86 backend.
1364 :    
1365 :     a. Added instructions for 64-bit support. Instruction selection for
1366 :     64-bit has not been committed, however, since that
1367 :     requires changes to MLTREE which haven't been approved by
1368 :     Lal and John.
1369 :    
1370 :     b. Added support for FUCOMI and FUCOMIP when generating code for
1371 :     PentiumPro and above. We only generate these instructions in
1372 :     the fast-fp mode.
1373 :    
1374 :     c. Added cases for JP and JNP in X86FreqProps.
1375 :    
1376 :     3. CFG
1377 :    
1378 :     CFG now has a bunch of methods for edge splitting and merging.
1379 :    
1380 :     4. Machine description.
1381 :    
1382 :     John's simplification of MLTREE_BASIS.fcond broke a few machine
1383 :     description things:
1384 :    
1385 :     rtl-build.{sig,sml} and hppa.mdl fixed.
1386 :    
1387 :     NOTE: the machine description stuff in the repository is still broken.
1388 :     Again, I can't put my fixes in because that involves
1389 :     changes to MLTREE.
1390 :    
1391 :     ----------------------------------------------------------------------
1392 : blume 1145 Name: Matthias Blume
1393 : blume 1155 Date: 2002/03/20 15:55:00 EST
1394 :     Tag: blume-20020320-kmp
1395 :     Description:
1396 :    
1397 :     Implemented Knuth-Morris-Pratt string matching in PreString and used
1398 :     it for String.isSubstring, Substring.isSubstring, and
1399 :     Substring.position.
1400 :    
1401 :     (Might need some stress-testing. Simple examples worked fine.)
1402 :    
1403 :     ----------------------------------------------------------------------
1404 :     Name: Matthias Blume
1405 : blume 1152 Date: 2002/03/19 16:37:00 EST
1406 :     Tag: blume-20020319-witnesses
1407 :     Description:
1408 :    
1409 :     Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
1410 :    
1411 :     This implements a generic mechanism for changing constness qualifiers
1412 :     anywhere within big C types without resorting to outright "casts".
1413 :     (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
1414 :     modify the constness at the outermost level.)
1415 :     The implementation of "convert" is based on the idea of "witness"
1416 :     values -- values that are not used by the operation but whose types
1417 :     "testify" to their applicability. On the implementation side, "convert"
1418 :     is simply a projection (returning its second curried argument). With
1419 :     cross-module inlining, it should not result in any machine code being
1420 :     generated.
1421 :    
1422 :     ----------------------------------------------------------------------
1423 :     Name: Matthias Blume
1424 : blume 1148 Date: 2002/03/15 16:40:00 EST
1425 :     Tag: blume-20020315-basis
1426 :     Description:
1427 :    
1428 :     Provided (preliminary?) implementations for
1429 :    
1430 :     {String,Substring}.{concatWith,isSuffix,isSubstring}
1431 :    
1432 :     and
1433 :    
1434 :     Substring.full
1435 :    
1436 :     Those are in the Basis spec but they were missing in SML/NJ.
1437 :    
1438 :     ----------------------------------------------------------------------
1439 :     Name: Matthias Blume
1440 : blume 1145 Date: 2002/03/14 21:30:00 EST
1441 :     Tag: blume-20020314-controls
1442 :     Description:
1443 :    
1444 :     Controls:
1445 :     ---------
1446 :    
1447 :     1. Factored out the recently-added Controls : CONTROLS stuff and put
1448 :     it into its own library $/controls-lib.cm. The source tree for
1449 :     this is under src/smlnj-lib/Controls.
1450 :    
1451 :     2. Changed the names of types and functions in this interface, so they
1452 :     make a bit more "sense":
1453 :    
1454 :     module -> registry
1455 :     'a registry -> 'a group
1456 :    
1457 :     3. The interface now deals in ref cells only. The getter/setter interface
1458 :     is (mostly) gone.
1459 :    
1460 :     4. Added a function that lets one register an already-existing ref cell.
1461 :    
1462 :     5. Made the corresponding modifications to the rest of the code so that
1463 :     everything compiles again.
1464 :    
1465 :     6. Changed the implementation of Controls.MLRISC back to something closer
1466 :     to the original. In particular, this module (and therefore MLRISC)
1467 :     does not depend on Controls. There now is some link-time code in
1468 :     int-sys.sml that registers the MLRISC controls with the Controls
1469 :     module.
1470 :    
1471 :     CM:
1472 :     ---
1473 :    
1474 :     * One can now specify the lambda-split aggressiveness in init.cmi.
1475 :    
1476 :     ----------------------------------------------------------------------
1477 : leunga 1142 Name: Allen Leung
1478 :     Date: 2002/03/13 17:30:00 EST
1479 :     Tag: leunga-20020313-x86-fp-unary
1480 :     Description:
1481 :    
1482 :     Bug fix for:
1483 :    
1484 :     > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
1485 :     > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
1486 :     > - fun f(x,(y,z)) = Real.~ y;
1487 :     > [autoloading]
1488 :     > [autoloading done]
1489 :     > fchsl (%eax), 184(%esp)
1490 :     > Error: MLRisc bug: X86MCEmitter.emitInstr
1491 :     >
1492 :     > uncaught exception Error
1493 :     > raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
1494 :    
1495 :     The problem was that the code generator did not generate any fp registers
1496 :     in this case, and the ra didn't know that it needed to run the X86FP phase to
1497 :     translate the pseudo fp instruction. This only happened with unary fp
1498 :     operators in certain situations.
1499 :    
1500 :     ----------------------------------------------------------------------
1501 : blume 1137 Name: Matthias Blume
1502 : blume 1140 Date: 2002/03/13 14:00:00 EST
1503 :     Tag: blume-20020313-overload-etc
1504 :     Description:
1505 :    
1506 :     1. Added _overload as a synonym for overload for backward compatibility.
1507 :     (Control.overloadKW must be true for either version to be accepted.)
1508 :    
1509 :     2. Fixed bug in install script that caused more things to be installed
1510 :     than what was requested in config/targets.
1511 :    
1512 :     3. Made CM aware of the (_)overload construct so that autoloading
1513 :     works.
1514 :    
1515 :     ----------------------------------------------------------------------
1516 :     Name: Matthias Blume
1517 : blume 1138 Date: 2002/03/12 22:03:00 EST
1518 :     Tag: blume-20020312-url
1519 :     Description:
1520 :    
1521 :     Forgot to update BOOT and srcarchiveurl.
1522 :    
1523 :     ----------------------------------------------------------------------
1524 :     Name: Matthias Blume
1525 : blume 1137 Date: 2002/03/12 17:30:00 EST
1526 :     Tag: blume-20020312-version110392
1527 :     Description:
1528 :    
1529 :     Yet another version number bump (because of small changes to the
1530 :     binfile format). Version number is now 110.39.2. NEW BOOTFILES!
1531 :    
1532 :     Changes:
1533 :    
1534 :     The new pid generation scheme described a few weeks ago was overly
1535 :     complicated. I implemented a new mechanism that is simpler and
1536 :     provides a bit more "stability": Once CM has seen a compilation
1537 :     unit, it keeps its identity constant (as long as you do not delete
1538 :     those crucial CM/GUID/* files). This means that when you change
1539 : blume 1145 an interface, compile, then go back to the old interface, and
1540 : blume 1137 compile again, you arrive at the original pid.
1541 :    
1542 :     There now also is a mechanism that instructs CM to use the plain
1543 :     environment hash as a module's pid (effectively making its GUID
1544 :     the empty string). For this, "noguid" must be specified as an
1545 :     option to the .sml file in question within its .cm file.
1546 :     This is most useful for code that is being generated by tools such
1547 :     as ml-nlffigen (because during development programmers tend to
1548 :     erase the tool's entire output directory tree including CM's cached
1549 :     GUIDs). "noguid" is somewhat dangerous (since it can be used to locally
1550 :     revert to the old, broken behavior of SML/NJ, but in specific cases
1551 :     where there is no danger of interface confusion, its use is ok
1552 :     (I think).
1553 :    
1554 :     ml-nlffigen by default generates "noguid" annotations. They can be
1555 :     turned off by specifying -guid in its command line.
1556 :    
1557 :     ----------------------------------------------------------------------
1558 : george 1136 Name: Lal George
1559 :     Date: 2002/03/12 12 14:42:36 EST
1560 :     Tag: george-20020312-frequency-computation
1561 :     Description:
1562 :    
1563 :     Integrated jump chaining and static block frequency into the
1564 :     compiler. More details and numbers later.
1565 : leunga 1025
1566 : george 1003 ----------------------------------------------------------------------
1567 : george 1133 Name: Lal George
1568 :     Date: 2002/03/11 11 22:38:53 EST
1569 :     Tag: george-20020311-jump-chain-elim
1570 :     Description:
1571 :    
1572 :     Tested the jump chain elimination on all architectures (except the
1573 :     hppa). This is on by default right now and is profitable for the
1574 :     alpha and x86, however, it may not be profitable for the sparc and ppc
1575 :     when compiling the compiler.
1576 :    
1577 :     The gc test will typically jump to a label at the end of the cluster,
1578 :     where there is another jump to an external cluster containing the actual
1579 :     code to invoke gc. This is to allow factoring of common gc invocation
1580 :     sequences. That is to say, we generate:
1581 :    
1582 :     f:
1583 :     testgc
1584 :     ja L1 % jump if above to L1
1585 :    
1586 :     L1:
1587 :     jmp L2
1588 :    
1589 :    
1590 :     After jump chain elimination the 'ja L1' instructions is converted to
1591 :     'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end
1592 :     up being implemented in their long form (if L2 is far away) using:
1593 :    
1594 :     jbe L3 % jump if below or equal to L3
1595 :     jmp L2
1596 :     L3:
1597 :     ...
1598 :    
1599 :    
1600 :     For large compilation units L2 may be far away.
1601 :    
1602 :    
1603 :     ----------------------------------------------------------------------
1604 : blume 1132 Name: Matthias Blume
1605 :     Date: 2002/03/11 13:30:00 EST
1606 :     Tag: blume-20020311-mltreeeval
1607 :     Description:
1608 :    
1609 :     A functor parameter was missing.
1610 :    
1611 :     ----------------------------------------------------------------------
1612 : leunga 1130 Name: Allen Leung
1613 : leunga 1131 Date: 2002/03/11 10:30:00 EST
1614 : leunga 1142 Tag: leunga-20020311-runtime-string0
1615 : leunga 1131 Description:
1616 :    
1617 :     The representation of the empty string now points to a
1618 :     legal null terminated C string instead of unit. It is now possible
1619 :     to convert an ML string into C string with InlineT.CharVector.getData.
1620 :     This compiles into one single machine instruction.
1621 :    
1622 :     ----------------------------------------------------------------------
1623 :     Name: Allen Leung
1624 : leunga 1130 Date: 2002/03/10 23:55:00 EST
1625 :     Tag: leunga-20020310-x86-call
1626 :     Description:
1627 :    
1628 :     Added machine generation for CALL instruction (relative displacement mode)
1629 :    
1630 :     ----------------------------------------------------------------------
1631 : blume 1128 Name: Matthias Blume
1632 :     Date: 2002/03/08 16:05:00
1633 :     Tag: blume-20020308-entrypoints
1634 :     Description:
1635 :    
1636 :     Version number bumped to 110.39.1. NEW BOOTFILES!
1637 :    
1638 :     Entrypoints: non-zero offset into a code object where execution should begin.
1639 :    
1640 :     - Added the notion of an entrypoint to CodeObj.
1641 :     - Added reading/writing of entrypoint info to Binfile.
1642 :     - Made runtime system bootloader aware of entrypoints.
1643 :     - Use the address of the label of the first function given to mlriscGen
1644 :     as the entrypoint. This address is currently always 0, but it will
1645 :     not be 0 once we turn on block placement.
1646 :     - Removed the linkage cluster code (which was The Other Way(tm) of dealing
1647 :     with entry points) from mlriscGen.
1648 :    
1649 :     ----------------------------------------------------------------------
1650 : leunga 1127 Name: Allen Leung
1651 :     Date: 2002/03/07 20:45:00 EST
1652 :     Tag: leunga-20020307-x86-cmov
1653 :     Description:
1654 :    
1655 :     Bug fixes for CMOVcc on x86.
1656 :    
1657 :     1. Added machine code generation for CMOVcc
1658 :     2. CMOVcc is now generated in preference over SETcc on PentiumPro or above.
1659 :     3. CMOVcc cannot have an immediate operand as argument.
1660 :    
1661 :     ----------------------------------------------------------------------
1662 : blume 1126 Name: Matthias Blume
1663 :     Date: 2002/03/07 16:15:00 EST
1664 :     Tag: blume-20020307-controls
1665 :     Description:
1666 :    
1667 :     This is a very large but mostly boring patch which makes (almost)
1668 :     every tuneable compiler knob (i.e., pretty much everything under
1669 :     Control.* plus a few other things) configurable via both the command
1670 :     line and environment variables in the style CM did its configuration
1671 :     until now.
1672 :    
1673 :     Try starting sml with '-h' (or, if you are brave, '-H')
1674 :    
1675 :     To this end, I added a structure Controls : CONTROLS to smlnj-lib.cm which
1676 :     implements the underlying generic mechanism.
1677 :    
1678 :     The interface to some of the existing such facilities has changed somewhat.
1679 :     For example, the MLRiscControl module now provides mkFoo instead of getFoo.
1680 :     (The getFoo interface is still there for backward-compatibility, but its
1681 :     use is deprecated.)
1682 :    
1683 :     The ml-build script passes -Cxxx=yyy command-line arguments through so
1684 :     that one can now twiddle the compiler settings when using this "batch"
1685 :     compiler.
1686 :    
1687 :     TODO items:
1688 :    
1689 :     We should go through and throw out all controls that are no longer
1690 :     connected to anything. Moreover, we should go through and provide
1691 :     meaningful (and correct!) documentation strings for those controls
1692 :     that still are connected.
1693 :    
1694 :     Currently, multiple calls to Controls.new are accepted (only the first
1695 :     has any effect). Eventually we should make sure that every control
1696 :     is being made (via Controls.new) exactly once. Future access can then
1697 :     be done using Controls.acc.
1698 :    
1699 :     Finally, it would probably be a good idea to use the getter-setter
1700 :     interface to controls rather than ref cells. For the time being, both
1701 :     styles are provided by the Controls module, but getter-setter pairs are
1702 :     better if thread-safety is of any concern because they can be wrapped.
1703 :    
1704 :     *****************************************
1705 :    
1706 :     One bug fix: The function blockPlacement in three of the MLRISC
1707 :     backpatch files used to be hard-wired to one of two possibilities at
1708 :     link time (according to the value of the placementFlag). But (I
1709 :     think) it should rather sense the flag every time.
1710 :    
1711 :     *****************************************
1712 :    
1713 :     Other assorted changes (by other people who did not supply a HISTORY entry):
1714 :    
1715 :     1. the cross-module inliner now works much better (Monnier)
1716 :     2. representation of weights, frequencies, and probabilities in MLRISC
1717 :     changed in preparation of using those for weighted block placement
1718 :     (Reppy, George)
1719 :    
1720 :     ----------------------------------------------------------------------
1721 : george 1116 Name: Lal George
1722 : george 1124 Date: 2002/03/07 14:44:24 EST 2002
1723 :     Tag: george-20020307-weighted-block-placement
1724 :    
1725 :     Tested the weighted block placement optimization on all architectures
1726 :     (except the hppa) using AMPL to generate the block and edge frequencies.
1727 :     Changes were required in the machine properties to correctly
1728 :     categorize trap instructions. There is an MLRISC flag
1729 :     "weighted-block-placement" that can be used to enable weighted block
1730 :     placement, but this will be ineffective without block/edge
1731 :     frequencies (coming soon).
1732 :    
1733 :    
1734 :     ----------------------------------------------------------------------
1735 :     Name: Lal George
1736 : george 1116 Date: 2002/03/05 17:24:48 EST
1737 :     Tag: george-20020305-linkage-cluster
1738 :    
1739 : george 1124 In order to support the block placement optimization, a new cluster
1740 :     is generated as the very first cluster (called the linkage cluster).
1741 :     It contains a single jump to the 'real' entry point for the compilation
1742 :     unit. Block placement has no effect on the linkage cluster itself, but
1743 :     all the other clusters have full freedom in the manner in which they
1744 :     reorder blocks or functions.
1745 : george 1116
1746 :     On the x86 the typical linkage code that is generated is:
1747 :     ----------------------
1748 :     .align 2
1749 :     L0:
1750 :     addl $L1-L0, 72(%esp)
1751 : george 1124 jmp L1
1752 : george 1116
1753 :    
1754 :     .align 2
1755 :     L1:
1756 :     ----------------------
1757 :    
1758 :     72(%esp) is the memory location for the stdlink register. This
1759 :     must contain the address of the CPS function being called. In the
1760 : george 1124 above example, it contains the address of L0; before
1761 : george 1116 calling L1 (the real entry point for the compilation unit), it
1762 :     must contain the address for L1, and hence
1763 :    
1764 :     addl $L1-L0, 72(%esp)
1765 :    
1766 : george 1124 I have tested this on all architectures except the hppa.The increase
1767 :     in code size is of course negligible
1768 : george 1116
1769 :     ----------------------------------------------------------------------
1770 : leunga 1115 Name: Allen Leung
1771 :     Date: 2002/03/03 13:20:00 EST
1772 :     Tag: leunga-20020303-mlrisc-tools
1773 :    
1774 :     Added #[ ... ] expressions to mlrisc tools
1775 :    
1776 :     ----------------------------------------------------------------------
1777 : blume 1096 Name: Matthias Blume
1778 : blume 1098 Date: 2002/02/27 12:29:00 EST
1779 :     Tag: blume-20020227-cdebug
1780 :     Description:
1781 :    
1782 :     - made types in structure C and C_Debug to be equal
1783 :     - got rid of code duplication (c-int.sml vs. c-int-debug.sml)
1784 :     - there no longer is a C_Int_Debug (C_Debug is directly derived from C)
1785 :    
1786 :     ----------------------------------------------------------------------
1787 :     Name: Matthias Blume
1788 : blume 1096 Date: 2002/02/26 12:00:00 EST
1789 :     Tag: blume-20020226-ffi
1790 :     Description:
1791 :    
1792 :     1. Fixed a minor bug in CM's "noweb" tool:
1793 :     If numbering is turned off, then truly don't number (i.e., do not
1794 :     supply the -L option to noweb). The previous behavior was to supply
1795 :     -L'' -- which caused noweb to use the "default" line numbering scheme.
1796 :     Thanks to Chris Richards for pointing this out (and supplying the fix).
1797 :    
1798 :     2. Once again, I reworked some aspects of the FFI:
1799 :    
1800 :     A. The incomplete/complete type business:
1801 :    
1802 :     - Signatures POINTER_TO_INCOMPLETE_TYPE and accompanying functors are
1803 :     gone!
1804 :     - ML types representing an incomplete type are now *equal* to
1805 :     ML types representing their corresponding complete types (just like
1806 :     in C). This is still safe because ml-nlffigen will not generate
1807 :     RTTI for incomplete types, nor will it generate functions that
1808 :     require access to such RTTI. But when ML code generated from both
1809 :     incomplete and complete versions of the C type meet, the ML types
1810 :     are trivially interoperable.
1811 :    
1812 :     NOTE: These changes restore the full generality of the translation
1813 :     (which was previously lost when I eliminated functorization)!
1814 :    
1815 :     B. Enum types:
1816 :    
1817 :     - Structure C now has a type constructor "enum" that is similar to
1818 :     how the "su" constructor works. However, "enum" is not a phantom
1819 :     type because each "T enum" has values (and is isomorphic to
1820 :     MLRep.Signed.int).
1821 :     - There are generic access operations for enum objects (using
1822 :     MLRep.Signed.int).
1823 :     - ml-nlffigen will generate a structure E_foo for each "enum foo".
1824 :     * The structure contains the definition of type "mlrep" (the ML-side
1825 :     representation type of the enum). Normally, mlrep is the same
1826 :     as "MLRep.Signed.int", but if ml-nlffigen was invoked with "-ec",
1827 :     then mlrep will be defined as a datatype -- thus facilitating
1828 :     pattern matching on mlrep values.
1829 :     ("-ec" will be suppressed if there are duplicate values in an
1830 :     enumeration.)
1831 :     * Constructors ("-ec") or values (no "-ec") e_xxx of type mlrep
1832 :     will be generated for each C enum constant xxx.
1833 :     * Conversion functions m2i and i2m convert between mlrep and
1834 :     MLRep.Signed.int. (Without "-ec", these functions are identities.)
1835 :     * Coversion functions c and ml convert between mlrep and "tag enum".
1836 :     * Access functions (get/set) fetch and store mlrep values.
1837 :     - By default (unless ml-nlffigen was invoked with "-nocollect"), unnamed
1838 :     enumerations are merged into one single enumeration represented by
1839 :     structure E_'.
1840 :    
1841 :     ----------------------------------------------------------------------
1842 : leunga 1080 Name: Allen Leung
1843 : leunga 1094 Date: 2002/02/25 04:45:00 EST
1844 :     Tag: leunga-20020225-cps-spill
1845 :    
1846 :     This is a new implementation of the CPS spill phase.
1847 :     The new phase is in the new file compiler/CodeGen/cpscompile/spill-new.sml
1848 :     In case of problems, replace it with the old file spill.sml
1849 :    
1850 :     The current compiler runs into some serious performance problems when
1851 :     constructing a large record. This can happen when we try to compile a
1852 :     structure with many items. Even a very simple structure like the following
1853 :     makes the compiler slow down.
1854 :    
1855 :     structure Foo = struct
1856 :     val x_1 = 0w1 : Word32.int
1857 :     val x_2 = 0w2 : Word32.int
1858 :     val x_3 = 0w3 : Word32.int
1859 :     ...
1860 :     val x_N = 0wN : Word32.int
1861 :     end
1862 :    
1863 :     The following table shows the compile time, from N=1000 to N=4000,
1864 :     with the old compiler:
1865 :    
1866 :     N
1867 :     1000 CPS 100 spill 0.04u 0.00s 0.00g
1868 :     MLRISC ra 0.06u 0.00s 0.05g
1869 :     (spills = 0 reloads = 0)
1870 :     TOTAL 0.63u 0.07s 0.21g
1871 :    
1872 :     1100 CPS 100 spill 8.25u 0.32s 0.64g
1873 :     MLRISC ra 5.68u 0.59s 3.93g
1874 :     (spills = 0 reloads = 0)
1875 :     TOTAL 14.71u 0.99s 4.81g
1876 :    
1877 :     1500 CPS 100 spill 58.55u 2.34s 1.74g
1878 :     MLRISC ra 5.54u 0.65s 3.91g
1879 :     (spills = 543 reloads = 1082)
1880 :     TOTAL 65.40u 3.13s 6.00g
1881 :    
1882 :     2000 CPS 100 spill 126.69u 4.84s 3.08g
1883 :     MLRISC ra 0.80u 0.10s 0.55g
1884 :     (spills = 42 reloads = 84)
1885 :     TOTAL 129.42u 5.10s 4.13g
1886 :    
1887 :     3000 CPS 100 spill 675.59u 19.03s 11.64g
1888 :     MLRISC ra 2.69u 0.27s 1.38g
1889 :     (spills = 62 reloads = 124)
1890 :     TOTAL 682.48u 19.61s 13.99g
1891 :    
1892 :     4000 CPS 100 spill 2362.82u 56.28s 43.60g
1893 :     MLRISC ra 4.96u 0.27s 2.72g
1894 :     (spills = 85 reloads = 170)
1895 :     TOTAL 2375.26u 57.21s 48.00g
1896 :    
1897 :     As you can see the old cps spill module suffers from some serious
1898 : leunga 1115 performance problem. But since I cannot decipher the old code fully,
1899 :     instead of patching the problems up, I'm reimplementing it
1900 : leunga 1094 with a different algorithm. The new code is more modular,
1901 :     smaller when compiled, and substantially faster
1902 :     (O(n log n) time and O(n) space). Timing of the new spill module:
1903 :    
1904 :     4000 CPS 100 spill 0.02u 0.00s 0.00g
1905 :     MLRISC ra 0.25u 0.02s 0.15g
1906 :     (spills=1 reloads=3)
1907 :     TOTAL 7.74u 0.34s 1.62g
1908 :    
1909 :     Implementation details:
1910 :    
1911 :     As far as I can tell, the purpose of the CPS spill module is to make sure the
1912 :     number of live variables at any program point (the bandwidth)
1913 :     does not exceed a certain limit, which is determined by the
1914 :     size of the spill area.
1915 :    
1916 :     When the bandwidth is too large, we decrease the register pressure by
1917 :     packing live variables into spill records. How we achieve this is
1918 :     completely different than what we did in the old code.
1919 :    
1920 :     First, there is something about the MLRiscGen code generator
1921 :     that we should be aware of:
1922 :    
1923 :     o MLRiscGen performs code motion!
1924 :    
1925 :     In particular, it will move floating point computations and
1926 :     address computations involving only the heap pointer to
1927 :     their use sites (if there is only a single use).
1928 :     What this means is that if we have a CPS record construction
1929 :     statement
1930 :    
1931 :     RECORD(k,vl,w,e)
1932 :    
1933 :     we should never count the new record address w as live if w
1934 :     has only one use (which is often the case).
1935 :    
1936 :     We should do something similar to floating point, but the transformation
1937 :     there is much more complex, so I won't deal with that.
1938 :    
1939 :     Secondly, there are now two new cps primops at our disposal:
1940 :    
1941 :     1. rawrecord of record_kind option
1942 :     This pure operator allocates some uninitialized storage from the heap.
1943 :     There are two forms:
1944 :    
1945 :     rawrecord NONE [INT n] allocates a tagless record of length n
1946 :     rawrecord (SOME rk) [INT n] allocates a tagged record of length n
1947 :     and initializes the tag.
1948 :    
1949 :     2. rawupdate of cty
1950 :     rawupdate cty (v,i,x)
1951 :     Assigns to x to the ith component of record v.
1952 :     The storelist is not updated.
1953 :    
1954 :     We use these new primops for both spilling and increment record construction.
1955 :    
1956 :     1. Spilling.
1957 :    
1958 :     This is implemented with a linear scan algorithm (but generalized
1959 :     to trees). The algorithm will create a single spill record at the
1960 :     beginning of the cps function and use rawupdate to spill to it,
1961 :     and SELECT or SELp to reload from it. So both spills and reloads
1962 :     are fine-grain operations. In contrast, in the old algorithm
1963 :     "spills" have to be bundled together in records.
1964 :    
1965 :     Ideally, we should sink the spill record construction to where
1966 :     it is needed. We can even split the spill record into multiple ones
1967 :     at the places where they are needed. But CPS is not a good
1968 :     representation for global code motion, so I'll keep it simple and
1969 :     am not attempting this.
1970 :    
1971 :     2. Incremental record construction (aka record splitting).
1972 :    
1973 :     Long records with many component values which are simulatenously live
1974 :     (recall that single use record addresses are not considered to
1975 :     be live) are constructed with rawrecord and rawupdate.
1976 :     We allocate space on the heap with rawrecord first, then gradually
1977 :     fill it in with rawupdate. This is the technique suggested to me
1978 :     by Matthias.
1979 :    
1980 :     Some restrictions on when this is applicable:
1981 :     1. It is not a VECTOR record. The code generator currently does not handle
1982 :     this case. VECTOR record uses double indirection like arrays.
1983 :     2. All the record component values are defined in the same "basic block"
1984 :     as the record constructor. This is to prevent speculative
1985 :     record construction.
1986 :    
1987 :     ----------------------------------------------------------------------
1988 :     Name: Allen Leung
1989 : leunga 1086 Date: 2002/02/22 01:02:00 EST
1990 :     Tag: leunga-20020222-mlrisc-tools
1991 :    
1992 :     Minor bug fixes in the parser and rewriter
1993 :    
1994 :     ----------------------------------------------------------------------
1995 :     Name: Allen Leung
1996 : leunga 1085 Date: 2002/02/21 20:20:00 EST
1997 :     Tag: leunga-20020221-peephole
1998 :    
1999 :     Regenerated the peephole files. Some contained typos in the specification
2000 :     and some didn't compile because of pretty printing bugs in the old version
2001 :     of 'nowhere'.
2002 :    
2003 :     ----------------------------------------------------------------------
2004 :     Name: Allen Leung
2005 : leunga 1079 Date: 2002/02/19 20:20:00 EST
2006 :     Tag: leunga-20020219-mlrisc-tools
2007 :     Description:
2008 :    
2009 :     Minor bug fixes to the mlrisc-tools library:
2010 :    
2011 :     1. Fixed up parsing colon suffixed keywords
2012 :     2. Added the ability to shut the error messages up
2013 :     3. Reimplemented the pretty printer and fixed up/improved
2014 :     the pretty printing of handle and -> types.
2015 :     4. Fixed up generation of literal symbols in the nowhere tool.
2016 :     5. Added some SML keywords to to sml.sty
2017 :    
2018 :     ----------------------------------------------------------------------
2019 :     Name: Matthias Blume
2020 : blume 1078 Date: 2002/02/19 16:20:00 EST
2021 :     Tag: blume-20020219-cmffi
2022 :     Description:
2023 :    
2024 :     A wild mix of changes, some minor, some major:
2025 :    
2026 :     * All C FFI-related libraries are now anchored under $c:
2027 :     $/c.cm --> $c/c.cm
2028 :     $/c-int.cm --> $c/internals/c-int.cm
2029 :     $/memory.cm --> $c/memory/memory.cm
2030 :    
2031 :     * "make" tool (in CM) now treats its argument pathname slightly
2032 :     differently:
2033 :     1. If the native expansion is an absolute name, then before invoking
2034 :     the "make" command on it, CM will apply OS.Path.mkRelative
2035 :     (with relativeTo = OS.FileSys.getDir()) to it.
2036 :     2. The argument will be passed through to subsequent phases of CM
2037 :     processing without "going native". In particular, if the argument
2038 :     was an anchored path, then "make" will not lose track of that anchor.
2039 :    
2040 :     * Compiler backends now "know" their respective C calling conventions
2041 :     instead of having to be told about it by ml-nlffigen. This relieves
2042 :     ml-nlffigen from one of its burdens.
2043 :    
2044 :     * The X86Backend has been split into X86CCallBackend and X86StdCallBackend.
2045 :    
2046 :     * Export C_DEBUG and C_Debug from $c/c.cm.
2047 :    
2048 :     * C type encoding in ml-nlffi-lib has been improved to model the conceptual
2049 :     subtyping relationship between incomplete pointers and their complete
2050 :     counterparts. For this, ('t, 'c) ptr has been changed to 'o ptr --
2051 :     with the convention of instantiating 'o with ('t, 'c) obj whenever
2052 :     the pointer target type is complete. In the incomplete case, 'o
2053 :     will be instantiated with some "'c iobj" -- a type obtained by
2054 :     using one of the functors PointerToIncompleteType or PointerToCompleteType.
2055 :    
2056 :     Operations that work on both incomplete and complete pointer types are
2057 :     typed as taking an 'o ptr while operations that require the target to
2058 :     be known are typed as taking some ('t, 'c) obj ptr.
2059 :    
2060 :     voidptr is now a bit "more concrete", namely "type voidptr = void ptr'"
2061 :     where void is an eqtype without any values. This makes it possible
2062 :     to work on voidptr values using functions meant to operate on light
2063 :     incomplete pointers.
2064 :    
2065 :     * As a result of the above, signature POINTER_TO_INCOMPLETE_TYPE has
2066 :     been vastly simplified.
2067 :    
2068 :     ----------------------------------------------------------------------
2069 :     Name: Matthias Blume
2070 : blume 1076 Date: 2002/02/19 10:48:00 EST
2071 :     Tag: blume-20020219-pqfix
2072 :     Description:
2073 :    
2074 :     Applied Chris Okasaki's bug fix for priority queues.
2075 :    
2076 :     ----------------------------------------------------------------------
2077 :     Name: Matthias Blume
2078 : blume 1073 Date: 2002/02/15 17:05:00
2079 : blume 1069 Tag: Release_110_39
2080 :     Description:
2081 :    
2082 : blume 1073 Last-minute retagging is becoming a tradition... :-(
2083 :    
2084 :     This is the working release 110.39.
2085 :    
2086 :     ----------------------------------------------------------------------
2087 :     Name: Matthias Blume
2088 :     Date: 2002/02/15 16:00:00 EST
2089 :     Tag: Release_110_39-orig
2090 :     Description:
2091 :    
2092 : blume 1069 Working release 110.39. New bootfiles.
2093 :    
2094 : blume 1073 (Update: There was a small bug in the installer so it wouldn't work
2095 :     with all shells. So I retagged. -Matthias)
2096 :    
2097 : blume 1069 ----------------------------------------------------------------------
2098 :     Name: Matthias Blume
2099 : blume 1068 Date: 2002/02/15 14:17:00 EST
2100 :     Tag: blume-20020215-showbindings
2101 :     Description:
2102 :    
2103 :     Added EnvRef.listBoundSymbols and CM.State.showBindings. Especially
2104 :     the latter can be useful for exploring what bindings are available at
2105 :     the interactive prompt. (The first function returns only the list
2106 :     of symbols that are really bound, the second prints those but also the
2107 :     ones that CM's autoloading mechanism knows about.)
2108 :    
2109 :     ----------------------------------------------------------------------
2110 :     Name: Matthias Blume
2111 : blume 1067 Date: 2002/02/15 12:08:00 EST
2112 :     Tag: blume-20020215-iptrs
2113 :     Description:
2114 :    
2115 :     Two improvements to ml-nlffigen:
2116 :    
2117 :     1. Write files only if they do not exist or if their current contents
2118 :     do not coincide with what's being written. (That is, avoid messing
2119 :     with the time stamps unless absolutely necessary.)
2120 :    
2121 :     2. Implement a "repository" mechanism for generated files related
2122 :     to "incomplete pointer types". See the README file for details.
2123 :    
2124 :     ----------------------------------------------------------------------
2125 :     Name: Matthias Blume
2126 : blume 1066 Date: 2002/02/14 11:50:00 EST
2127 :     Tag: blume-20020214-quote
2128 :     Description:
2129 :    
2130 :     Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm). This is required
2131 :     because of the new and improved tag generation scheme. (Thanks to Allen
2132 :     Leung for pointing it out.)
2133 :    
2134 :     ----------------------------------------------------------------------
2135 : george 1065 Name: Lal George
2136 :     Date: 2002/02/14 09:55:27 EST 2002
2137 :     Tag: george-20020214-isabelle-bug
2138 :     Description:
2139 :    
2140 :     Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
2141 :     of Isabelle on the x86.
2142 :    
2143 :     From Allen:
2144 :     -----------
2145 :     I've found the problem:
2146 :    
2147 :     in ra-core.sml, I use the counter "blocked" to keep track of the
2148 :     true number of elements in the freeze queue. When the counter goes
2149 :     to zero, I skip examining the queue. But I've messed up the
2150 :     bookkeeping in combine():
2151 :    
2152 :     else ();
2153 :     case !ucol of
2154 :     PSEUDO => (if !cntv > 0 then
2155 :     (if !cntu > 0 then blocked := !blocked - 1 else ();
2156 :     ^^^^^^^^^^^^^^^^^^^^^^^
2157 :     moveu := mergeMoveList(!movev, !moveu)
2158 :     )
2159 :     else ();
2160 :    
2161 :     combine() is called to coalesce two nodes u and v.
2162 :     I think I was thinking that if the move counts of u and v are both
2163 :     greater than zero then after they are coalesced then one node is
2164 :     removed from the freeze queue. Apparently I was thinking that
2165 :     both u and v are of low degree, but that's clearly not necessarily true.
2166 :    
2167 :    
2168 :     02/12/2002:
2169 :     Here's the patch. HOL now compiles.
2170 :    
2171 :     I don't know how this impact on performance (compile
2172 :     time or runtime). This bug caused the RA (especially on the x86)
2173 :     to go thru the potential spill phase when there are still nodes on the
2174 :     freeze queue.
2175 :    
2176 :    
2177 :    
2178 :    
2179 :     ----------------------------------------------------------------------
2180 : blume 1058 Name: Matthias Blume
2181 : blume 1064 Date: 2002/02/13 22:40:00 EST
2182 :     Tag: blume-20020213-fptr-rtti
2183 :     Description:
2184 :    
2185 :     Fixed a bug in ml-nlffigen that was introduced with one of the previous
2186 :     updates.
2187 :    
2188 :     ----------------------------------------------------------------------
2189 :     Name: Matthias Blume
2190 : blume 1063 Date: 2002/02/13 16:41:00 EST
2191 :     Tag: blume-20020213-cmlpq
2192 :     Description:
2193 :    
2194 :     Added new priority queue export symbols (which have just been added to
2195 :     smlnj-lib.cm) to CML's version of smlnj-lib.cm. (Otherwise CML would
2196 :     not compile and the installer would choke.)
2197 :    
2198 :     ----------------------------------------------------------------------
2199 :     Name: Matthias Blume
2200 : blume 1062 Date: 2002/02/13 16:15:00 EST
2201 :     Tag: blume-20020213-various
2202 :     Description:
2203 :    
2204 :     1. More tweaks to ml-nlffigen:
2205 :    
2206 :     - better internal datastructures (resulting in slight speedup)
2207 :     - "-match" option requires exact match
2208 :     - "localized" gensym counters (untagged structs/unions nested within
2209 :     other structs/unions or within typedefs get a fresh counter; their
2210 :     tag will be prefixed by a concatenation of their parents' tags)
2211 :     - bug fixes (related to calculation of transitive closure of types
2212 :     to be included in the output)
2213 :    
2214 :     2. Minor Basis updates:
2215 :    
2216 :     - added implementations for List.collate and Option.app
2217 :    
2218 :     ----------------------------------------------------------------------
2219 :     Name: Matthias Blume
2220 : blume 1060 Date: 2002/02/11 15:55:00 EST
2221 :     Tag: blume-20020211-gensym
2222 :     Description:
2223 :    
2224 :     Added a "-gensym" option to command line of ml-nlffigen. This can be
2225 :     used to specify a "stem" -- a string that is inserted in all "gensym'd"
2226 :     names (ML structure names that correspond to unnamed C structs, unions,
2227 :     and enums), so that separate runs of ml-nlffigen do not clash.
2228 :    
2229 :     ----------------------------------------------------------------------
2230 :     Name: Matthias Blume
2231 : blume 1059 Date: 2002/02/11 12:05:00 EST
2232 :     Tag: blume-20020211-gensml
2233 :     Description:
2234 :    
2235 :     A quick fix for a problem with GenSML (in the pgraph-util library):
2236 :     Make generation of toplevel "local" optional. (Strictly speaking,
2237 :     signature definitions within "local" are not legal SML.)
2238 :    
2239 :     Other than that: updates to INSTALL and cm/TODO.
2240 :    
2241 :     ----------------------------------------------------------------------
2242 :     Name: Matthias Blume
2243 : blume 1058 Date: 2002/02/08 15:00:00 EST
2244 :     Tag: blume-20020208-uniquepid
2245 :     Description:
2246 :    
2247 :     0. Version number has been bumped to 110.38.1. NEW BOOTFILES!!!
2248 :    
2249 :     1. The installer (config/install.sh) has gotten smarter:
2250 :    
2251 :     - Configuration options are a bit easier to specify now
2252 :     (in config/targets).
2253 :     - Bug in recognizing .tar.bz2 files fixed.
2254 :     - Installer automatically resolves dependencies between
2255 :     configuration options (e.g., if you ask for eXene, you will
2256 :     also get cml -- regardless whether you asked for it or not).
2257 :     - Installer can run in "quieter mode" by setting the environment
2258 :     variable INSTALL_QUIETLY to "true". "Quieter" does not mean
2259 :     "completely silent", though.
2260 :     - Build HashCons library as part of smlnj-lib.
2261 :    
2262 :     2. A new scheme for assigning persistent identifiers to compilation
2263 :     units (and, by extension, to types etc.) has been put into place.
2264 :     This fixes a long-standing bug where types and even dynamic values
2265 :     can get internally confused, thereby compromising type safety
2266 :     (abstraction) and dynamic correctness. See
2267 :    
2268 :     http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
2269 :    
2270 :     for an example of how things could go wrong until now.
2271 :    
2272 :     The downside of the new scheme is that pids are not quite as
2273 :     persistent as they used to be: CM will generate a fresh pid
2274 :     for every compilation unit that it thinks it sees for the first
2275 :     time. That means that if you compile starting from a clean, fresh
2276 :     source tree at two different times, you end up with different
2277 :     binaries.
2278 :    
2279 :     Cutoff recompilation, however, has not been compromised because
2280 :     CM keeps pid information in special caches between runs.
2281 :    
2282 :     ----------------------------------------------------------------------
2283 : george 1053 Name: Lal George
2284 : george 1055 Date: 2002/02/07 15:34:13 EST 2002
2285 :     Tag: <none>
2286 :     Description:
2287 :    
2288 :     Compilers that generate assembly code may produce global labels
2289 :     whose value is resolved at link time. The various peephole optimization
2290 :     modules did not take this in account.
2291 :    
2292 :     TODO. The Labels.addrOf function should really return an option
2293 :     type so that clients are forced to deal with this issue, rather
2294 :     than an exception being raised.
2295 :    
2296 :     ----------------------------------------------------------------------
2297 :     Name: Lal George
2298 : george 1053 Date: 2002/02/06 13:55:02 EST
2299 :     Tag: george-20020206-ra-breakup
2300 :     Description:
2301 :    
2302 :     1. A bug fix from Allen.
2303 :    
2304 :     A typo causes extra fstp %st(0)'s to be generated at compensation
2305 :     edges, which might cause stack underflow traps at runtime. This
2306 :     occurs in fft where there are extraneous fstps right before the 'into'
2307 :     trap instruction (in this case they are harmless since none of the
2308 :     integers overflow.)
2309 :    
2310 : george 1054 2. Pulled out various utility modules that were embedded in the modules
2311 : george 1053 of the register allocator. I need these modules for other purposes, but
2312 : george 1054 they are not complete enough to put into a library (just yet).
2313 : george 1053 ----------------------------------------------------------------------
2314 : blume 1049 Name: Matthias Blume
2315 :     Date: 2002/01/31 16:05:00 EST
2316 :     Tag: blume-20020131-sparc-ccalls
2317 :     Description:
2318 :    
2319 :     1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
2320 :     of extra stack space by mistake. Fixed.
2321 :    
2322 :     2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
2323 :    
2324 :     ----------------------------------------------------------------------
2325 : leunga 1048 Name: Allen Leung
2326 :     Date: 2002/01/30
2327 :     Tag: leunga-20020130-nowhere-bug-fix
2328 :     Description:
2329 :    
2330 :     MLRISC bug fixes:
2331 :     1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
2332 :     2. MachineInt.fromString was negating its value.
2333 :    
2334 :     ----------------------------------------------------------------------
2335 : blume 1039 Name: Matthias Blume
2336 : blume 1047 Date: 2002/01/29
2337 :     Tag: blume-20020129-INSTALL
2338 :     Description:
2339 :    
2340 :     - Added somewhat detailed installation instructions (file INSTALL).
2341 :     - Fixed curl-detection bug in config/install.sh.
2342 :     - It is now possible to select the URL getter using the URLGETTER
2343 :     environment variable:
2344 :    
2345 :     not set / "unknown" --> automatic detection (script tries wget,
2346 :     curl, and lynx)
2347 :     "wget" / "curl" / "lynx" --> use the specified program (script "knows"
2348 :     how to properly invoke them)
2349 :     other --> use $URLGETTER directly, it must take
2350 :     precisely two command-line arguments
2351 :     (source URL and destination file name)
2352 :    
2353 :     ----------------------------------------------------------------------
2354 :     Name: Matthias Blume
2355 : blume 1044 Date: 2002/01/28
2356 : blume 1045 Tag: blume-20020128-sparc-ccalls
2357 :     Description:
2358 :    
2359 :     - Fixed problem with calculation of "used" registers in sparc-c-calls.
2360 :     - Make use of the allocParam argument in sparc-c-calls.
2361 :    
2362 :     ----------------------------------------------------------------------
2363 :     Name: Matthias Blume
2364 :     Date: 2002/01/28
2365 : blume 1044 Tag: blume-20020128-allocParam
2366 :     Description:
2367 :    
2368 :     John Reppy: Changes c-calls API to accept client-callback for
2369 :     allocating extra stack space.
2370 :     me: Corresponding changes to mlriscGen (using a dummy argument that
2371 :     does not change the current behavior).
2372 :    
2373 :     ----------------------------------------------------------------------
2374 :     Name: Matthias Blume
2375 : blume 1040 Date: 2002/01/28 12:00:00
2376 :     Tag: Release_110_38
2377 :     Description:
2378 :    
2379 :     This time for real!!!
2380 :    
2381 :     ----------------------------------------------------------------------
2382 :     Name: Matthias Blume
2383 : blume 1039 Date: 2002/01/28 10:56:00 EST
2384 :     Tag: blume-20020128-retraction
2385 :     Description:
2386 :    
2387 :     0. Retracted earlier 110.38. (The Release_110_38 tag has been replaced
2388 :     with blume-Release_110_38-retracted.)
2389 :    
2390 :     1. Fixed a problem with incorrect rounding modes in real64.sml.
2391 :     (Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
2392 :    
2393 :     2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
2394 :     and enums fixed. The naming of corresponding ML identifiers should
2395 :     now be consistent again.
2396 :    
2397 :     ----------------------------------------------------------------------
2398 : leunga 1038 Name: Allen Leung
2399 :     Date: 2002/01/27
2400 :     Tag: leunga-20020127-nowhere
2401 :     Description:
2402 :    
2403 :     Added a target called nowhere in the configuration scripts.
2404 :     Enabling this will build the MLRISC 'nowhere' tool (for translating
2405 :     programs with where-clauses into legal SML code) during installation.
2406 :    
2407 :     ----------------------------------------------------------------------
2408 : blume 1036 Name: Matthias Blume
2409 : leunga 1038 Date: 2002/01/25 21:27:00 EST
2410 : blume 1039 Tag: blume-Release_110_38-retracted
2411 : blume 1037 Description:
2412 :    
2413 :     Call it a (working) release! Version is 110.38. Bootfiles are ready.
2414 :    
2415 :     README will be added later.
2416 :    
2417 : blume 1039 !!! NOTE: Re-tagged as blume-Release_110_38-retracted. Original tag
2418 :     (Release_110_38) removed. Reason: Last-minute bug fixes.
2419 :    
2420 : blume 1037 ----------------------------------------------------------------------
2421 :     Name: Matthias Blume
2422 : blume 1036 Date: 2002/01/25
2423 :     Tag: blume-20020125-ffi
2424 :     Description:
2425 :    
2426 :     A large number of tweaks and improvements to ml-nlffi-lib and
2427 :     ml-nlffigen:
2428 :    
2429 :     - ML represenation types have been streamlined
2430 :     - getter and setter functions work with concrete values, not abstract
2431 :     ones where possible
2432 :     - ml-nlffigen command line more flexible (see README file there)
2433 :     - some bugs have been fixed (hopefully)
2434 :    
2435 :     ----------------------------------------------------------------------
2436 : george 1034 Name: Lal George
2437 :     Date: 2002/01/24
2438 :     Tag: george-20020124-risc-ra-interface
2439 :     Description:
2440 :    
2441 :     There is a dramatic simplification in the interface to the
2442 :     register allocator for RISC architectures as a result of making
2443 :     parallel copy instructions explicit.
2444 :    
2445 :     ----------------------------------------------------------------------
2446 : blume 1028 Name: Matthias Blume
2447 : blume 1032 Date: 2002/01/22
2448 :     Tag: blume-20020122-x86-ccalls
2449 :     Description:
2450 :    
2451 :     Bug fix for c-calls on x86 (having to do with how char- and
2452 :     short-arguments are being handled).
2453 :    
2454 :     ----------------------------------------------------------------------
2455 :     Name: Matthias Blume
2456 : blume 1031 Date: 2002/01/21
2457 :     Tag: blume-20020121-ff
2458 :     Description:
2459 :    
2460 :     Another day of fiddling with the FFI...
2461 :    
2462 :     1. Bug fix/workaround: CKIT does not complain about negative array
2463 :     dimensions, so ml-nlffigen has to guard itself against this possibility.
2464 :     (Otherwise a negative dimension would send it into an infinite loop.)
2465 :    
2466 :     2. Some of the abstract types (light objects, light pointers, most "base"
2467 :     types) in structure C are now eqtypes.
2468 :    
2469 :     3. Added constructors and test functions for NULL function pointers.
2470 :    
2471 :     ----------------------------------------------------------------------
2472 :     Name: Matthias Blume
2473 : blume 1028 Date: 2002/01/18
2474 : blume 1030 Tag: blume-20020118-ready-for-new-release
2475 :     Description:
2476 :    
2477 :     Made config/srcarchiveurl point to a new place. (Will provide boot
2478 :     files shortly.)
2479 :    
2480 :     Maybe we christen this to be 110.38?
2481 :    
2482 :     ----------------------------------------------------------------------
2483 :     Name: Matthias Blume
2484 :     Date: 2002/01/18
2485 : blume 1029 Tag: blume-20020118-more-ffifiddle
2486 :     Description:
2487 :    
2488 :     Today's FFI fiddling:
2489 :    
2490 :     - Provided a structure CGetSet with "convenient" versions of C.Get.* and
2491 :     C.Set.* that use concrete (MLRep.*) arguments and results instead
2492 :     of abstract ones.
2493 :    
2494 :     - Provided word-style bit operations etc. for "int" representation
2495 :     types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
2496 :     and Long.
2497 :    
2498 :     ----------------------------------------------------------------------
2499 :     Name: Matthias Blume
2500 :     Date: 2002/01/18
2501 : blume 1028 Tag: blume-20020118-use-x86-fp
2502 :     Description:
2503 :    
2504 :     Now that x86-fast-fp seems to be working, I turned it back on again
2505 :     by default. (Seems to work fine now, even with the FFI.)
2506 :    
2507 :     Other than that, I added some documentation about the FFI to
2508 :     src/ml-nlffigen/README and updated the FFI test examples in
2509 :     src/ml-nlffi-lib/Tests/*.
2510 :    
2511 :     ----------------------------------------------------------------------
2512 : leunga 1025 Name: Allen Leung
2513 :     Date: 2002/01/17
2514 :     Tag: leunga-20020117-x86-fast-fp-call
2515 :     Description:
2516 :    
2517 :     1. Fixed a problem with handling return fp values when x86's fast fp
2518 :     mode is turned on.
2519 :    
2520 :     2. Minor pretty printing fix for cellset. Print %st(0) as %st(0) instead
2521 :     of %f32.
2522 :    
2523 :     3. Added a constructor INT32lit to the ast of MLRISC tools.
2524 :    
2525 :     ----------------------------------------------------------------------
2526 : blume 1021 Name: Matthias Blume
2527 :     Date: 2002/01/16
2528 :     Tag: blume-20020116-ffifiddle
2529 :     Description:
2530 :    
2531 :     More fiddling with the FFI interface:
2532 :    
2533 :     - Make constness 'c instead of rw wherever possible. This eliminates
2534 :     the need for certain explicit coercions. (However, due to ML's
2535 :     value polymorphism, there will still be many cases where explicit
2536 :     coercions are necessary. Phantom types are not the whole answer
2537 :     to modeling a subtyping relationship in ML.)
2538 :    
2539 :     - ro/rw coersions for pointers added. (Avoids the detour through */&.)
2540 :    
2541 :     - "printf" test example added to src/ml-nlffi-lib/Tests. (Demonstrates
2542 :     clumsy workaround for varargs problem.)
2543 :    
2544 :     ----------------------------------------------------------------------
2545 : george 1016 Name: Lal George
2546 :     Date: 2002/01/15
2547 :     Tag: <none>
2548 :     Description:
2549 :    
2550 :     1. Since COPY instructions are no longer native to the architecture,
2551 :     a generic functor can be used to implement the expandCopies function.
2552 :    
2553 :     2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
2554 :     TEXT segment.
2555 :    
2556 :     ----------------------------------------------------------------------
2557 : blume 1011 Name: Matthias Blume
2558 : blume 1015 Date: 2002/01/15
2559 :     Tag: blume-20020115-ffiupdates
2560 :     Description:
2561 :    
2562 :     1. Fix for bug resulting in single-precision float values being returned
2563 :     incorrectly from FFI calls.
2564 :    
2565 :     2. Small modifications to C FFI API:
2566 :    
2567 :     - memory-allocation routines return straight objects (no options)
2568 :     and raise an exception in out-of-memory situations
2569 :     - unsafe extensions to cast between function pointers and pointers
2570 :     from/to ints
2571 :     - added structure C_Debug as an alternative to structure C where
2572 :     pointer-dereferencing (|*| and |*!) always check for null-pointers
2573 :     - added open_lib' to DynLinkage; open_lib' works like open_lib
2574 :     but also takes a (possibly empty) list of existing library handles
2575 :     that the current library depends on
2576 :    
2577 :     ----------------------------------------------------------------------
2578 :     Name: Matthias Blume
2579 : blume 1011 Date: 2002/01/10
2580 :     Tag: blume-20020110-newffigen
2581 :     Description:
2582 :    
2583 :     1. Updates to portable graph code.
2584 :    
2585 :     2. Major update to ml-nlffigen and ml-nlffi-lib. Things are much
2586 :     more scalable now so that even huge interfaces such as the one
2587 :     for GTK compile in finite time and space. :-)
2588 :     See src/ml-nlffigen/README for details on what's new.
2589 :    
2590 :     ----------------------------------------------------------------------
2591 : george 1003 Name: Lal George
2592 : george 1009 Date: 2001/01/09 14:31:35 EST 2002
2593 :     Tag: george-20011206-rm-native-copy
2594 :     Description:
2595 :    
2596 :     Removed the native COPY and FCOPY instructions
2597 :     from all the architectures and replaced it with the
2598 :     explicit COPY instruction from the previous commit.
2599 :    
2600 :     It is now possible to simplify many of the optimizations
2601 :     modules that manipulate copies. This has not been
2602 :     done in this change.
2603 :    
2604 :     ----------------------------------------------------------------------
2605 :     Name: Lal George
2606 : george 1003 Date: 2001/12/06 16:50:13 EST 2001
2607 :     Tag: george-20011206-mlrisc-instruction
2608 :     Description:
2609 : george 824
2610 : george 1003 Changed the representation of instructions from being fully abstract
2611 :     to being partially concrete. That is to say:
2612 :    
2613 :     from
2614 :     type instruction
2615 :    
2616 :     to
2617 :     type instr (* machine instruction *)
2618 :    
2619 :     datatype instruction =
2620 :     LIVE of {regs: C.cellset, spilled: C.cellset}
2621 :     | KILL of {regs: C.cellset, spilled: C.cellset}
2622 :     | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
2623 :     | ANNOTATION of {i: instruction, a: Annotations.annotation}
2624 :     | INSTR of instr
2625 :    
2626 :     This makes the handling of certain special instructions that appear on
2627 :     all architectures easier and uniform.
2628 :    
2629 :     LIVE and KILL say that a list of registers are live or killed at the
2630 :     program point where they appear. No spill code is generated when an
2631 :     element of the 'regs' field is spilled, but the register is moved to
2632 :     the 'spilled' (which is present, more for debugging than anything else).
2633 :    
2634 :     LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
2635 :     We used to generate:
2636 :    
2637 :     DEFFREG f1
2638 :     f1 := f2 + f3
2639 :     trapb
2640 :    
2641 :     but now generate:
2642 :    
2643 :     f1 := f2 + f3
2644 :     trapb
2645 :     LIVE {regs=[f1,f2,f3], spilled=[]}
2646 :    
2647 :     Furthermore, the DEFFREG (hack) required that all floating point instruction
2648 :     use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
2649 :     defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
2650 :     in a cleaner alpha implementation. (Hopefully, intel will not get rid of
2651 :     this architecture).
2652 :    
2653 :     COPYXXX is intended to replace the parallel COPY and FCOPY available on
2654 :     all the architectures. This will result in further simplification of the
2655 :     register allocator that must be aware of them for coalescing purposes, and
2656 :     will also simplify certain aspects of the machine description that provides
2657 :     callbacks related to parallel copies.
2658 :    
2659 :     ANNOTATION should be obvious, and now INSTR represents the honest to God
2660 :     machine instruction set!
2661 :    
2662 :     The <arch>/instructions/<arch>Instr.sml files define certain utility
2663 :     functions for making porting easier -- essentially converting upper case
2664 :     to lower case. All machine instructions (of type instr) are in upper case,
2665 :     and the lower case form generates an MLRISC instruction. For example on
2666 :     the alpha we have:
2667 :    
2668 :     datatype instr =
2669 :     LDA of {r:cell, b:cell, d:operand}
2670 :     | ...
2671 :    
2672 :     val lda : {r:cell, b:cell, d:operand} -> instruction
2673 :     ...
2674 :    
2675 :     where lda is just (INSTR o LDA), etc.
2676 :    
2677 : leunga 815 ----------------------------------------------------------------------
2678 : blume 986 Name: Matthias Blume
2679 : blume 993 Date: 2001/11/22 21:40:00 EST
2680 :     Tag: Release_110_37
2681 :     Description:
2682 :    
2683 :     Release 110.37. This time for real.
2684 :    
2685 :     ----------------------------------------------------------------------
2686 :     Name: Matthias Blume
2687 : blume 988 Date: 2001/11/21 16:35:00 EST
2688 :     Tag: blume-20011121-foot-in-mouth
2689 :     Description:
2690 :    
2691 :     Removed the "Release_110_37" tag because of a serious bug.
2692 :     This will be re-tagged once the bug is fixed.
2693 :    
2694 :     ----------------------------------------------------------------------
2695 :     Name: Matthias Blume
2696 : blume 987 Date: 2001/11/21 16:14:00 EST
2697 :     Tag: blume-20011121-forgottenfile
2698 :     Description:
2699 :    
2700 :     Forgot to add a file. (Just a .tex-file -- part of
2701 :     the CM manual source.)
2702 :    
2703 :     ----------------------------------------------------------------------
2704 :     Name: Matthias Blume
2705 : blume 986 Date: 2001/11/21 16:10:00 EST
2706 : blume 988 Tag: blume-20011121-invalid_110_37
2707 : blume 986 Description:
2708 :    
2709 : blume 988 Note: I removed the original tag "Release_110_37" from this commit
2710 :     because we found a serious bug in all non-x86 backends.
2711 :     - Matthias
2712 :    
2713 : blume 986 1. Modifications to the SML/NJ code generator and to the runtime system
2714 :     so that code object name strings are directly inserted into code
2715 :     objects at code generation time. The only business the runtime system
2716 :     has with this is now to read the name strings on occasions.
2717 :     (The encoding of the name string has also changed somewhat.)
2718 :    
2719 :     2. CM now implements a simple "set calculus" for specifying export lists.
2720 :     In particular, it is now possible to refer to the export lists of
2721 :     other libraries/groups/sources and form unions as well as differences.
2722 :     See the latest CM manual for details.
2723 :    
2724 :     3. An separate notion of "proxy" libraries has again be eliminated from
2725 :     CM's model. (Proxy libraries are now simply a special case of using
2726 :     the export list calculus.)
2727 :    
2728 :     4. Some of the existing libraries now take advantage of the new set
2729 :     calculus.
2730 :     (Notice that not all libraries have been converted because some
2731 :     of the existing .cm-files are supposed to be backward compatible
2732 :     with 110.0.x.)
2733 :    
2734 :     5. Some cleanup in stand-alone programs. (Don't use "exnMessage" -- use
2735 :     "General.exnMessage"! The former relies on a certain hook to be
2736 :     initialized, and that often does not happen in the stand-alone case.)
2737 :    
2738 :     ----------------------------------------------------------------------
2739 : george 984 Name: Lal George
2740 :     Date: 2001/11/21 13:56:18 EST
2741 :     Tag: george-2001121-pseudo-ops
2742 :     Description:
2743 :    
2744 :     Implemented a complete redesign of MLRISC pseudo-ops. Now there
2745 :     ought to never be any question of incompatabilities with
2746 :     pseudo-op syntax expected by host assemblers.
2747 :    
2748 :     For now, only modules supporting GAS syntax are implemented
2749 :     but more should follow, such as MASM, and vendor assembler
2750 :     syntax, e.g. IBM as, Sun as, etc.
2751 :    
2752 :     ----------------------------------------------------------------------
2753 : blume 977 Name: Matthias Blume
2754 :     Date: 2001/11/14 11:52:00 EST
2755 :     Tag: blume-20011114-srcname
2756 :     Description:
2757 :    
2758 :     1. Routed the name of the current source file to mlriscgen where it
2759 :     should be directly emitted into the code object. (This last part
2760 :     is yet to be done.)
2761 :    
2762 :     2. Some cleanup of the pgraph code to make it match the proposal that
2763 :     I put out the other day. (The proposal notwithstanding, things are
2764 :     still in flux here.)
2765 :    
2766 :     ----------------------------------------------------------------------
2767 : george 976 Name: Lal George
2768 :     Date: 2001/11/14 09:44:04 EST
2769 :     Tag:
2770 :     Description:
2771 :    
2772 :     Fix for a backpatching bug reported by Allen.
2773 :    
2774 :     Because the boundary between short and long span-dependent
2775 :     instructions is +/- 128, there are an astounding number of
2776 :     span-dependent instructions whose size is over estimated.
2777 :    
2778 :     Allen came up with the idea of letting the size of span
2779 :     dependent instructions be non-monotonic, for a maxIter
2780 :     number of times, after which the size must be monotonically
2781 :     increasing.
2782 :    
2783 :     This table shows the number of span-dependent instructions
2784 :     whose size was over-estimated as a function of maxIter, for the
2785 :     file Parse/parse/ml.grm.sml:
2786 :    
2787 :     maxIter # of instructions:
2788 :     10 687
2789 :     20 438
2790 :     30 198
2791 :     40 0
2792 :    
2793 :     In compiling the compiler, there is no significant difference in
2794 :     compilation speed between maxIter=10 and maxIter=40. Actually,
2795 :     my measurements showed that maxIter=40 was a tad faster than
2796 :     maxIter=10! Also 96% of the files in the compiler reach a fix
2797 :     point within 13 iterations, so fixing maxIter at 40, while high,
2798 :     is okay.
2799 :    
2800 :     ----------------------------------------------------------------------
2801 : blume 975 Name: Matthias Blume
2802 :     Date: 2001/10/31 15:25:00 EST
2803 :     Tag: blume-20011031-pgraph
2804 :     Description:
2805 :    
2806 :     CKIT:
2807 :     * Changed the "Function" constructor of type Ast.ctype to carry optional
2808 :     argument identifiers.
2809 :     * Changed the return type of TypeUtil.getFunction accordingly.
2810 :     * Type equality ignores the argument names.
2811 :     * TypeUtil.composite tries to preserve argument names but gives up quickly
2812 :     if there is a mismatch.
2813 :    
2814 :     installation script:
2815 :     * attempts to use "curl" if available (unless "wget" is available as well)
2816 :    
2817 :     CM:
2818 :     * has an experimental implementation of "portable graphs" which I will
2819 :     soon propose as an implementation-independent library format
2820 :     * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
2821 :    
2822 :     NLFFI-LIB:
2823 :     * some cleanup (all cosmetic)
2824 :    
2825 :     NLFFIGEN:
2826 :     * temporarily disabled the mechanism that suppresses ML output for
2827 :     C definitions whose identifiers start with an underscore character
2828 :     * generate val bindings for enum constants
2829 :     * user can request that only one style (light or heavy) is being used;
2830 :     default is to use both (command-line arguments: -heavy and -light)
2831 :     * fixed bug in handling of function types involving incomplete pointers
2832 :     * generate ML entry points that take record arguments (i.e., using
2833 :     named arguments) for C functions that have a prototype with named
2834 :     arguments
2835 :     (see changes to CKIT)
2836 :    
2837 :     ----------------------------------------------------------------------
2838 : leunga 972 Name: Allen Leung
2839 :     Date: 2001/10/27 20:34:00 EDT
2840 :     Tag: leunga-20011027-x86-fast-fp-call
2841 :     Description:
2842 :    
2843 :     Fixed the bug described in blume-20010920-slowfp.
2844 :    
2845 :     The fix involves
2846 :     1. generating FCOPYs in FSTP in ia32-svid
2847 :     2. marking a CALL with the appropriate annotation
2848 :    
2849 :     ----------------------------------------------------------------------
2850 : blume 961 Name: Matthias Blume
2851 :     Date: 2001/10/16 11:32:00 EDT
2852 :     Tag: blume-20011016-netbsd
2853 :     Description:
2854 :    
2855 :     Underscore patch from Chris Richards (fixing problem with compiling
2856 :     runtime system under recent NetBSD).
2857 :    
2858 :     ----------------------------------------------------------------------
2859 : george 959 Name: Allen Leung
2860 :     Date: 2001/10/12 17:18:32 EDT 2001
2861 :     Tag: leung-20011012-x86-printflowgraph
2862 :     Description:
2863 :    
2864 :     X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
2865 :    
2866 :     ----------------------------------------------------------------------
2867 : george 952 Name: Lal George
2868 : george 958 Date: 2001/10/11 23:51:34 EDT
2869 :     Tag: george-20011011-too-many-instrs
2870 :     Description:
2871 :    
2872 :     The representation of a program point never expected to see more
2873 :     than 65536 instructions in a basic block!
2874 :    
2875 :     ----------------------------------------------------------------------
2876 :     Name: Lal George
2877 : george 952 Date: 2001/10/09 09:41:37 EDT
2878 :     Tag: george-20011008-mlrisc-labels
2879 :     Description:
2880 :    
2881 :     Changed the machine description files to support printing of
2882 :     local and global labels in assembly code, based on host assembler
2883 :     conventions.
2884 :    
2885 :     ----------------------------------------------------------------------
2886 : blume 916 Name: Matthias Blume
2887 : blume 939 Date: 2001/09/25 15:25:00 EDT
2888 :     Tag: blume-20010925-exninfo
2889 :     Description:
2890 :    
2891 :     I provided a non-hook implementation of exnName (at the toplevel) and
2892 :     made the "dummy" implementation of exnMessage (at the toplevel) more
2893 :     useful: if nothing gets "hooked in", then at least you are going to
2894 :     see the exception name and a message indicating why you don't see more.
2895 :    
2896 :     [For the time being, programs that need exnMessage and want to use
2897 :     ml-build should either use General.exnMessage (strongly recommended) or
2898 :     refer to structure General at some other point so that CM sees a
2899 :     static dependency.]
2900 :    
2901 :     [Similar remarks go for "print" and "use": If you want to use their
2902 :     functionality in stand-alone programs generated by ml-build, then use
2903 :     TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
2904 :    
2905 :     ----------------------------------------------------------------------
2906 :     Name: Matthias Blume
2907 : blume 938 Date: 2001/09/20 17:28:00 EDT
2908 :     Tag: blume-20010920-slowfp
2909 :     Description:
2910 :    
2911 :     Allen says that x86-fast-fp is not safe yet, so I turned it off again...
2912 :    
2913 :     ----------------------------------------------------------------------
2914 :     Name: Matthias Blume
2915 : blume 937 Date: 2001/09/20 17:20:00 EDT
2916 :     Tag: blume-20010920-canonicalpaths
2917 :     Description:
2918 :    
2919 :     0. Updated the BOOT file (something that I forgot to do earlier).
2920 :    
2921 :     1. Small internal change to CM so that it avoids "/../" in filenames
2922 :     as much as possible (but only where it is safe).
2923 :    
2924 :     2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
2925 :     that arguments that contain delimiters are passed through correctly.
2926 :     This change also means that all "special" arguments of the form
2927 :     @SMLxxx... must come first.
2928 :    
2929 :     3. Changed install script to put relative anchor names for tool commands
2930 :     into pathconfig.
2931 :    
2932 :     ----------------------------------------------------------------------
2933 :     Name: Matthias Blume
2934 : blume 932 Date: 2001/09/18 15:35:00 EDT
2935 :     Tag: blume-20010918-readme11036
2936 :     Description:
2937 :    
2938 :     Added README files.
2939 :    
2940 :     ----------------------------------------------------------------------
2941 :     Name: Matthias Blume
2942 : blume 929 Date: 2001/09/18 11:45:00 EDT
2943 :     Tag: Release_110_36 (retag)
2944 :     Description:
2945 :    
2946 :     Fixed mistake in config/preloads. Retagged as 110.36.
2947 :    
2948 :     ----------------------------------------------------------------------
2949 :     Name: Matthias Blume
2950 : blume 928 Date: 2001/09/18 09:40:00 EDT
2951 : blume 929 Tag: Release_110_36_orig (tag changed)
2952 : blume 928 Description:
2953 :    
2954 :     New version (110.36). New bootfiles.
2955 :    
2956 :     ----------------------------------------------------------------------
2957 :     Name: Matthias Blume
2958 : blume 927 Date: 2001/09/14 16:15:00 EDT
2959 :     Tag: blume-20010914-x86fastfp
2960 :     Description:
2961 :    
2962 :     John committed some changes that Allen made, in particular a (hopefully)
2963 :     correctly working version of the x86-fp module.
2964 :    
2965 :     I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
2966 :     flag to "true". Everything seems to compile to a fixpoint ok, and
2967 :     "mandelbrot" speeds up by about 15%.
2968 :    
2969 :     ----------------------------------------------------------------------
2970 :     Name: Matthias Blume
2971 : blume 923 Date: 2001/09/13 11:20:00 EDT
2972 :     Tag: blume-20010913-minimal
2973 :     Description:
2974 :    
2975 :     1. Stefan Monnier's patch to fix a miscompilation problem that
2976 :     was brought to light by John Reppy's work on Moby.
2977 :    
2978 :     2. Implemented a minimal "structure Compiler" that contains just
2979 :     "version" and "architecture". The minimal version will be
2980 :     available when the full version is not. This is for backward-
2981 :     compatibility with code that wants to test Compiler.version.
2982 :    
2983 :     ----------------------------------------------------------------------
2984 :     Name: Matthias Blume
2985 : blume 920 Date: 2001/08/28 14:03:00 EDT
2986 :     Tag: blume-20010828-ml-lex
2987 :     Description:
2988 :    
2989 :     Fix for bug 1581, received from Neophytos Michael.
2990 :    
2991 :     ----------------------------------------------------------------------
2992 :     Name: Matthias Blume
2993 : blume 918 Date: 2001/08/27 11:20:00 EDT
2994 :     Tag: blume-20010827-readme11035
2995 :     Description:
2996 :    
2997 :     Fleshed out the README file for 110.35.
2998 :    
2999 :     ----------------------------------------------------------------------
3000 :     Name: Matthias Blume
3001 : blume 916 Date: 2001/08/24 17:10:00 EDT
3002 :     Tag: Release_110_35
3003 :     Description:
3004 :    
3005 :     New version number (110.35). New bootfiles.
3006 :    
3007 :     ----------------------------------------------------------------------
3008 : george 915 Name: Lal George
3009 : george 909 Date: 2001/08/24 13:47:18 EDT 2001
3010 :     Tag: george-20010824-MLRISC-graphs
3011 :     Description:
3012 :    
3013 :     removed clusters from MLRISC completely and replaced with graphs.
3014 :    
3015 :     ----------------------------------------------------------------------
3016 :     Name: Matthias Blume
3017 : blume 905 Date: 2001/08/23 17:50:00 EDT
3018 :     Tag: blume-20010823-toplevel
3019 :     Description:
3020 :    
3021 :     - some reorganization of the code that implements various kinds of
3022 :     environments in the compiler (static, dynamic, symbolic, combined)
3023 :     - re-implemented the EnvRef module so that evalStream works properly
3024 :     (if the stream contains references to "use", "CM.make", etc.)
3025 :     - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
3026 :    
3027 :     ----------------------------------------------------------------------
3028 :     Name: Matthias Blume
3029 : blume 904 Date: 2001/08/20 15:50 EDT
3030 :     Tag: blume20010820-slipup
3031 :     Description:
3032 :    
3033 :     I forgot to commit a few files. Here they are...
3034 :    
3035 :     ----------------------------------------------------------------------
3036 :     Name: Matthias Blume
3037 : blume 903 Date: 2001/08/20 15:35:00 EDT
3038 :     Tag: blume-20010820-debugprof
3039 :     Description:
3040 :    
3041 :     !!!! NEW BOOTFILES !!!!
3042 :    
3043 :     This is another round of reorganizing the compiler sources. This
3044 :     time the main goal was to factor out all the "instrumentation"
3045 :     passes (for profiling and backtracing) into their own library.
3046 :     The difficulty was to do it in such a way that it does not depend
3047 :     on elaborate.cm but only on elabdata.cm.
3048 :    
3049 :     Therefore there have been further changes to both elaborate.cm and
3050 :     elabdata.cm -- more "generic" things have been moved from the former
3051 :     to the latter. As a result, I was forced to split the assignment
3052 :     of numbers indicating "primtyc"s into two portions: SML-generic and
3053 :     SML/NJ-specific. Since it would have been awkward to maintain,
3054 :     I bit the bullet and actually _changed_ the mapping between these
3055 :     numbers and primtycs. The bottom line of this is that you need
3056 :     a new set of bin- and bootfiles.
3057 :    
3058 :     I have built new bootfiles for all architectures, so doing a fresh
3059 :     checkout and config/install.sh should be all you need.
3060 :    
3061 :     The newly created library's name is
3062 :    
3063 :     $smlnj/viscomp/debugprof.cm
3064 :    
3065 :     and its sources live under
3066 :    
3067 :     src/compiler/DebugProf
3068 :    
3069 :     ----------------------------------------------------------------------
3070 :     Name: Matthias Blume
3071 : blume 902 Date: 2001/08/15 17:15:00 EDT
3072 :     Tag: blume-20010815-compreorg
3073 :     Description:
3074 :    
3075 :     This is a first cut at reorganizing the CM libraries that make up the
3076 :     core of the compiler. The idea is to separate out pieces that could
3077 :     be used independently by tools, e.g., the parser, the typechecker, etc.
3078 :    
3079 :     The current status is a step in this direction, but it is not quite
3080 :     satisfactory yet. Expect more changes in the future.
3081 :    
3082 :     Here is the current (new) organization...
3083 :    
3084 :     What used to be $smlnj/viscomp/core.cm is now divided into
3085 :     six CM libraries:
3086 :    
3087 :     $smlnj/viscomp/basics.cm
3088 :     /parser.cm
3089 :     /elabdata.cm
3090 :     /elaborate.cm
3091 :     /execute.cm
3092 :     /core.cm
3093 :    
3094 :     The CM files for these libraries live under src/system/smlnj/viscomp.
3095 :     All these libraries are proxy libraries that contain precisely
3096 :     one CM library component. Here are the locations of the components
3097 :     (all within the src/compiler tree):
3098 :    
3099 :     Basics/basics.cm
3100 :     Parse/parser.cm
3101 :     ElabData/elabdata.cm
3102 :     Elaborator/elaborate.cm
3103 :     Execution/execute.cm
3104 :     core.cm
3105 :    
3106 :     [This organization is the same that has been used already
3107 :     for a while for the architecture-specific parts of the visible
3108 :     compiler and for the old version of core.cm.]
3109 :    
3110 :     As you will notice, many source files have been moved from their
3111 :     respective original locations to a new home in one of the above
3112 :     subtrees.
3113 :    
3114 :     The division of labor between the new libraries is the following:
3115 :    
3116 :     basics.cm:
3117 :     - Simple, basic definitions that pertain to many (or all) of
3118 :     the other libraries.
3119 :     parser.cm:
3120 :     - The SML parser, producing output of type Ast.dec.
3121 :     - The type family for Ast is also defined and exported here.
3122 :     elabdata.cm:
3123 :     - The datatypes that describe input and output of the elaborator.
3124 :     This includes types, absyn, and static environments.
3125 :     elaborator.cm:
3126 :     - The SML/NJ type checker and elaborator.
3127 :     This maps an Ast.dec (with a given static environment) to
3128 :     an Absyn.dec (with a new static environment).
3129 :     - This libraries implements certain modules that used to be
3130 :     structures as functors (to remove dependencies on FLINT).
3131 :     execute.cm:
3132 :     - Everything having to do with executing binary code objects.
3133 :     - Dynamic environments.
3134 :     core.cm:
3135 :     - SML/NJ-specific instantiations of the elaborator and MLRISC.
3136 :     - Top-level modules.
3137 :     - FLINT (this should eventually become its own library)
3138 :    
3139 :     Notes:
3140 :    
3141 :     I am not 100% happy with the way I separated the elaborator (and its
3142 :     data structures) from FLINT. Two instances of the same problem:
3143 :    
3144 :     1. Data structures contain certain fields that carry FLINT-specific
3145 :     information. I hacked around this using exn and the property list
3146 :     module from smlnj-lib. But the fact that there are middle-end
3147 :     specific fields around at all is a bit annoying.
3148 :    
3149 :     2. The elaborator calculates certain FLINT-related information. I tried
3150 :     to make this as abstract as I could using functorization, but, again,
3151 :     the fact that the elaborator has to perform calculations on behalf
3152 :     of the middle-end at all is not nice.
3153 :    
3154 :     3. Having to used exn and property lists is unfortunate because it
3155 :     weakens type checking. The other alternative (parameterizing
3156 :     nearly *everything*) is not appealing, though.
3157 :    
3158 :     I removed the "rebinding =" warning hack because due to the new organization
3159 :     it was awkward to maintain it. As a result, the compiler now issues some of
3160 :     these warnings when compiling init.cmi during bootstrap compilation. On
3161 :     the plus side, you also get a warning when you do, for example:
3162 :     val op = = Int32.+
3163 :     which was not the case up to now.
3164 :    
3165 :     I placed "assign" and "deref" into the _Core structure so that the
3166 :     code that deals with the "lazy" keyword can find them there. This
3167 :     removes the need for having access to the primitive environment
3168 :     during elaboration.
3169 :    
3170 :     ----------------------------------------------------------------------
3171 :     Name: Matthias Blume
3172 : blume 898 Date: 2001/08/13
3173 :     Tag: blume-20010813-closures
3174 :     Description:
3175 :    
3176 :     This fix was sent to us by Zhong Shao. It is supposed to improve the
3177 :     performance of certain loops by avoiding needless closure allocation.
3178 :    
3179 :     ----------------------------------------------------------------------
3180 : george 890 Name: Lal George
3181 : george 896 Date: 2001/07/31 10:03:23 EDT 2001
3182 :     Tag: george-20010731-x86-fmalloc
3183 :     Description: Fixed bug in x86 calls
3184 :    
3185 :     There was a bug where call instructions would mysteriously
3186 :     vanish. The call instruction had to be one that returned
3187 :     a floating point value.
3188 :    
3189 :     ----------------------------------------------------------------------
3190 :     Name: Lal George
3191 : george 890 Date: 2001/07/19 16:36:29 EDT 2001
3192 :     Tag: george-20010719-simple-cells
3193 :     Description:
3194 :    
3195 :     I have dramatically simplified the interface for CELLS in MLRISC.
3196 :    
3197 :     In summary, the cells interface is broken up into three parts:
3198 :    
3199 :     1. CellsBasis : CELLS_BASIS
3200 :    
3201 :     CellsBasis is a top level structure and common for all
3202 :     architectures. it contains the definitions of basic datatypes
3203 :     and utility functions over these types.
3204 :    
3205 :     2. functor Cells() : CELLS
3206 :    
3207 :     Cells generates an interface for CELLS that incorporates the
3208 :     specific resources on the target architecture, such as the
3209 :     presence of special register classes, their number and size,
3210 :     and various useful substructures.
3211 :    
3212 :     3. <ARCH>CELLS
3213 :    
3214 :     e.g. SparcCells: SPARCCELLS
3215 :    
3216 :     <ARCH>CELLS usually contains additional bindings for special
3217 :     registers on the architecture, such as:
3218 :    
3219 :     val r0 : cell (* register zero *)
3220 :     val y : cell (* Y register *)
3221 :     val psr : cell (* processor status register *)
3222 :     ...
3223 :    
3224 :     The structure returned by applying the Cells functor is opened
3225 :     in this interface.
3226 :    
3227 :     The main implication of all this is that the datatypes for cells is
3228 :     split between CellsBasis and CELLS -- a fairly simple change for user
3229 :     code.
3230 :    
3231 :     In the old scheme the CELLS interface had a definitional binding of
3232 :     the form:
3233 :    
3234 :     signature CELLS = sig
3235 :    
3236 :     structure CellsBasis = CellsBasis
3237 :    
3238 :     ...
3239 :    
3240 :     end
3241 :    
3242 :     With all the sharing constraints that goes on in MLRISC, this old
3243 :     design quickly leads to errors such as:
3244 :    
3245 :     "structure definition spec inside of sharing ... "
3246 :    
3247 :    
3248 :     and appears to require an unacceptable amount of sharing and where
3249 :     constraint hackery.
3250 :    
3251 :     I think this error message (the interaction of definitional specs and
3252 :     sharing) requires more explanation on our web page.
3253 :    
3254 :     ----------------------------------------------------------------------
3255 : blume 826 Name: Matthias Blume
3256 : blume 879 Date: 2001/07/19 15:00:00 EDT
3257 :     Tag: blume-20010719-libreorg
3258 :     Description:
3259 :    
3260 :     This update puts together a fairly extensive but straightforward change
3261 :     to the way the libraries that implement the interactive system are
3262 :     organized:
3263 :    
3264 :     The biggest change is the elimination of structure Compiler. As a
3265 :     replacement for this structure, there is now a CM library
3266 :     (known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
3267 :     that exports all the substructures of the original structure Compiler
3268 :     directly. So instead of saying Compiler.Foo.bar one now simply
3269 :     says Foo.bar. (The CM libraries actually export a collection of
3270 :     structures that is richer than the collection of substructures of
3271 :     structure Compiler.)
3272 :    
3273 :     To make the transition smooth, there is a separate library called
3274 :     $smlnj/compiler/compiler.cm which puts together and exports the
3275 :     original structure Compiler (or at least something very close to it).
3276 :    
3277 :     There are five members of the original structure Compiler
3278 :     that are not exported directly but which instead became members
3279 :     of a new structure Backend (described by signature BACKEND). These are:
3280 :     structure Profile (: PROFILE), structure Compile (: COMPILE), structure
3281 :     Interact (: INTERACT), structure Machine (: MACHINE), and val
3282 :     architecture (: string).
3283 :    
3284 :     Structure Compiler.Version has become structure CompilerVersion.
3285 :    
3286 :     Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
3287 :     by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
3288 :     or x86, respectively.
3289 :     Each of these exports the same frontend structures that
3290 :     $smlnj/compiler.cm exports. But they do not have a structure Backend
3291 :     and instead export some structure <Arch>Backend where <Arch> is Alpha32,
3292 :     Hppa, PPC, Sparc, or X86, respectively.
3293 :    
3294 :     Library $smlnj/compiler/all.cm exports the union of the exports of
3295 :     $smlnj/compiler/<arch>.cm
3296 :    
3297 :     There are no structures <Arch>Compiler anymore, use
3298 :     $smlnj/compiler/<arch>.cm instead.
3299 :    
3300 :     Library host-compiler-0.cm is gone. Instead, the internal library
3301 :     that instantiates CM is now called cm0.cm. Selection of the host
3302 :     compiler (backend) is no longer done here but. (Responsibility for it
3303 :     now lies with $smlnj/compiler/current.cm. This seems to be more
3304 :     logical.)
3305 :    
3306 :     Many individual files have been moved or renamed. Some files have
3307 :     been split into multiple files, and some "dead" files have been deleted.
3308 :    
3309 :     Aside from these changes to library organization, there are also changes
3310 :     to the way the code itself is organized:
3311 :    
3312 :     Structure Binfile has been re-implemented in such a way that it no
3313 :     longer needs any knowledge of the compiler. It exclusively deals
3314 :     with the details of binfile layout. It no longer invokes the
3315 :     compiler (for the purpose of creating new prospective binfile
3316 :     content), and it no longer has any knowledge of how to interpret
3317 :     pickles.
3318 :    
3319 :     Structure Compile (: COMPILE) has been stripped down to the bare
3320 :     essentials of compilation. It no longer deals with linking/execution.
3321 :     The interface has been cleaned up considerably.
3322 :    
3323 :     Utility routines for dealing with linking and execution have been
3324 :     moved into their own substructures.
3325 :    
3326 :     (The ultimate goal of these changes is to provide a light-weight
3327 :     binfile loader/linker (at least for, e.g., stable libraries) that
3328 :     does not require CM or the compiler to be present.)
3329 :    
3330 :     CM documentation has been updated to reflect the changes to library
3331 :     organization.
3332 :    
3333 :     ----------------------------------------------------------------------
3334 :     Name: Matthias Blume
3335 : blume 875 Date: 2001/07/10 17:30:00 EDT
3336 :     Tag: Release_110_34
3337 :     Description:
3338 :    
3339 : blume 876 Minor tweak to 110.34 (re-tagged):
3340 :    
3341 :     - README.html file added to CVS repository
3342 :     - runtime compiles properly under FreeBSD 3.X and 4.X
3343 :    
3344 :     ----------------------------------------------------------------------
3345 :     Name: Matthias Blume
3346 :     Date: 2001/07/10 17:30:00 EDT
3347 :     Tag: Release_110_34
3348 :     Description:
3349 :    
3350 : blume 875 New version number (110.34). New bootfiles.
3351 :    
3352 :     ----------------------------------------------------------------------
3353 :     Name: Matthias Blume
3354 : blume 874 Date: 2001/07/09 16:00:00 EDT
3355 :     Tag: blume-20010709-more-varargs
3356 :     Description:
3357 :    
3358 :     I changed the handling of varargs in ml-nlffigen again:
3359 :     The ellipsis ... will now simply be ignored (with an accompanying warning).
3360 :    
3361 :     The immediate effect is that you can actually call a varargs function
3362 :     from ML -- but you can't actually supply any arguments beyond the ones
3363 :     specified explicitly. (For example, you can call printf with its format
3364 :     string, but you cannot pass additional arguments.)
3365 :    
3366 :     This behavior is only marginally more useful than the one before, but
3367 :     it has the advantage that a function or, more importantly, a function
3368 :     type never gets dropped on the floor, thus avoiding follow-up problems with
3369 :     other types that refer to the offending one.
3370 :    
3371 :     ----------------------------------------------------------------------
3372 :     Name: Matthias Blume
3373 : blume 873 Date: 2001/07/09 11:25:00 EDT
3374 :     Tag: blume-20010709-varargs
3375 :     Description:
3376 :    
3377 :     1. ckit-lib.cm now exports structure Error
3378 :     2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
3379 :     with a warning accompanied by a source location. Moreover, it
3380 :     merely skips the offending function or type and proceeds with the
3381 :     rest of its work.u As a result, one can safely feed C code containing
3382 :     "..." to ml-nlffigen.
3383 :     3. There are some internal improvements to CM, providing slightly
3384 :     more general string substitutions in the tools subsystem.
3385 :    
3386 :     ----------------------------------------------------------------------
3387 :     Name: Matthias Blume
3388 : blume 854 Date: 2001/06/27 15:10:00 EDT
3389 :     Tag: blume-20010627-concur
3390 :     Description:
3391 :    
3392 :     Fixed a small bug in CM's handling of parallel compilation.
3393 :     (You could observe the bug by Control-C-interrupting an ordinary
3394 :     CMB.make or CM.stabilize and then attaching some compile servers.
3395 :     The result was that all of a sudden the previously interrupted
3396 :     compilation would continue on its own. This was because of
3397 :     an over-optimization: CM did not bother to clean out certain queues
3398 :     when no servers were attached "anyway", resulting in the contents
3399 :     of these queues to grab control when new servers did get attached.)
3400 :    
3401 :     There is also another minor update to the CM manual.
3402 :    
3403 :     ----------------------------------------------------------------------
3404 :     Name: Matthias Blume
3405 : blume 853 Date: 2001/06/26 16:15:00 EDT
3406 :     Tag: blume-20010626-cmdoc
3407 :     Description:
3408 :    
3409 :     Minor typo fixed in CM manual (syntax diagram for libraries).
3410 :    
3411 :     ----------------------------------------------------------------------
3412 :     Name: Matthias Blume
3413 : blume 852 Date: 2001/06/25 22:55:00 EDT
3414 :     Tag: blume-20010625-x86pc
3415 :     Description:
3416 :    
3417 :     Fixed a nasty bug in the X86 assembly code that caused signal
3418 :     handlers to fail (crash) randomly.
3419 :    
3420 :     ----------------------------------------------------------------------
3421 :     Name: Matthias Blume
3422 : blume 846 Date: 2001/06/25 12:05:00 EDT
3423 :     Tag: blume-20010625-nlffigen
3424 :     Description:
3425 :    
3426 :     This update fixes a number of minor bugs in ml-nlffigen as reported by
3427 :     Nick Carter <nbc@andrew.cmu.edu>.
3428 :    
3429 :     1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
3430 :     2. Default names for generated files are now derived from the name of
3431 :     the C file *without its directory*. In particular, this causes generated
3432 :     files to be placed locally even if the C file is in some system directory.
3433 :     3. Default names for generated signatures and structures are also derived
3434 :     from the C file name without its directory. This avoids silly things
3435 :     like "structure GL/GL".
3436 :     (Other silly names are still possible because ml-nlffigen does not do
3437 : blume 847 a thorough check of whether generated names are legal ML identifiers.
3438 :     When in doubt, use command line arguments to force particular names.)
3439 : blume 846
3440 :     ----------------------------------------------------------------------
3441 :     Name: Matthias Blume
3442 : blume 845 Date: 2001/06/21 12:25:00 EDT
3443 :     Tag: blume-20010621-eXene
3444 :     Description:
3445 :    
3446 :     eXene now compiles and (sort of) works again.
3447 :    
3448 :     The library name (for version > 110.33) is $/eXene.cm.
3449 :    
3450 :     I also added an new example in src/eXene/examples/nbody. See the
3451 :     README file there for details.
3452 :    
3453 :     ----------------------------------------------------------------------
3454 :     Name: Matthias Blume
3455 : blume 844 Date: 2001/06/20 16:40:00 EDT
3456 :     Tag: blume-20010620-cml
3457 :     Description:
3458 :    
3459 :     CML now compiles and works again.
3460 :    
3461 :     Libraries (for version > 110.33):
3462 :    
3463 :     $cml/cml.cm Main CML library.
3464 :     $cml/basis.cm CML's version of $/basis.cm.
3465 :     $cml/cml-internal.cm Internal helper library.
3466 :     $cml/core-cml.cm Internal helper library.
3467 :     $cml-lib/trace-cml.cm Tracing facility.
3468 :     $cml-lib/smlnj-lib.cm CML's version of $/smlnj-lib.cm
3469 :    
3470 :     The installer (config/install.sh) has been taught how to properly
3471 :     install this stuff.
3472 :    
3473 :     ----------------------------------------------------------------------
3474 :     Name: Matthias Blume
3475 : blume 843 Date: 2001/06/19 17:55:00 EDT
3476 :     Tag: blume-20010619-instantiate
3477 :     Description:
3478 :    
3479 :     This un-breaks the fix for bug 1432.
3480 :     (The bug was originally fixed in 110.9 but I broke it again some
3481 :     time after that.)
3482 :    
3483 :     ----------------------------------------------------------------------
3484 :     Name: Matthias Blume
3485 : blume 842 Date: 2001/06/19 17:25:00 EDT
3486 :     Tag: blume-20010619-signals
3487 :     Description:
3488 :    
3489 :     This should (hopefully) fix the long-standing signal handling bug.
3490 :     (The runtime system was constructing a continuation record with an
3491 :     incorrect descriptor which would cause the GC to drop data on the floor...)
3492 :    
3493 :     ----------------------------------------------------------------------
3494 :     Name: Matthias Blume
3495 : blume 840 Date: 2001/06/15 15:05:00 EDT
3496 : blume 841 Tag: blume-20010615-moresparc
3497 :     Description:
3498 :    
3499 :     Here is a short late-hour update related to Sparc c-calls:
3500 :    
3501 :     -- made handling of double-word arguments a bit smarter
3502 :    
3503 :     -- instruction selection phase tries to collapse certain clumsily
3504 :     constructed ML-Trees; typical example:
3505 :    
3506 :     ADD(ty,ADD(_,e,LI d1),LI d2) -> ADD(ty,e,LI(d1+d2))
3507 :    
3508 :     This currently has no further impact on SML/NJ since mlriscGen does
3509 :     not seem to generate such patterns in the first place, and c-calls
3510 :     (which did generate them in the beginning) has meanwhile been fixed
3511 :     so as to avoid them as well.
3512 :    
3513 :     ----------------------------------------------------------------------
3514 :     Name: Matthias Blume
3515 :     Date: 2001/06/15 15:05:00 EDT
3516 : blume 840 Tag: blume-20010615-sparc
3517 :     Description:
3518 :    
3519 :     The purpose of this update is to provide an implementation of NLFFI
3520 :     on Sparc machines.
3521 :    
3522 :     Here are the changes in detail:
3523 :    
3524 :     * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
3525 :     the Sparc implementation of the c-calls API.
3526 :     * The Sparc backend of SML/NJ has been modified to uniformely use %fp
3527 :     for accessing the ML frame. Thus, we have a real frame pointer and
3528 :     can freely modify %sp without need for an omit-frame-ptr phase.
3529 :     The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
3530 :     this case.
3531 :     * ml-nlffigen has been taught to produce code for different architectures
3532 :     and calling conventions.
3533 :     * In a way similar to what was done in the x86 case, the Sparc
3534 :     backend uses its own specific extension to mltree. (For example,
3535 :     it needs to be able to generate UNIMP instructions which are part
3536 :     of the calling convention.)
3537 :     * ml-nlffi-lib was reorganized to make it more modular (in particular,
3538 :     to make it easier to plug in new machine- and os-dependent parts).
3539 :    
3540 :     There are some other fairly unrelated bug fixes and cleanups as well:
3541 :    
3542 :     * I further hacked the .cm files for MLRISC tools (like MDLGen) so
3543 :     that they properly share their libraries with existing SML/NJ libraries.
3544 :     * I fixed a minor cosmetic bug in CM, supressing certain spurious
3545 :     follow-up error messages.
3546 :     * Updates to CM/CMB documentation.
3547 :    
3548 :     TODO items:
3549 :    
3550 :     * MLRISC should use a different register as its asmTemp on the Sparc.
3551 :     (The current %o2 is a really bad choice because it is part of the
3552 :     calling conventions, so things might interfere in unexpected ways.)
3553 :    
3554 :     ----------------------------------------------------------------------
3555 :     Name: Matthias Blume
3556 : blume 839 Date: 2001/06/07
3557 :     Tag: blume-20010607-calls
3558 :     Description:
3559 :    
3560 :     A number of internal changes related to C calls and calling conventions:
3561 :    
3562 :     1. ML-Tree CALL statements now carry a "pops" field. It indicates the
3563 :     number of bytes popped implicitly (by the callee). In most cases
3564 :     this field is 0 but on x86/win32 it is some non-zero value. This
3565 :     is information provided for the benefit of the "omit-frameptr" pass.
3566 :     2. The CALL instruction on the x86 carries a similar "pops" field.
3567 :     The instruction selection phase copies its value from the ML-Tree
3568 :     CALL statement.
3569 :     3. On all other architectures, the instruction selection phase checks
3570 :     whether "pops=0" and complains if not.
3571 :     4. The c-calls implementation for x86 now accepts two calling conventions:
3572 :     "ccall" and "stdcall". When "ccall" is selected, the caller cleans
3573 :     up after the call and pops is set to 0. For "stdcall", the caller
3574 :     does nothing, leaving the cleanup to the callee; pops is set to
3575 :     the number of bytes that were pushed onto the stack.
3576 :     5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
3577 :     distinguish between "ccall" and "stdcall".
3578 :     6. The UNIMP instruction has been added to the supported Sparc instruction
3579 :     set. (This is needed for implementing the official C calling convention
3580 :     on this architecture.)
3581 :     7. I fixed some of the .cm files under src/MLRISC/Tools to make them
3582 :     work with the latest CM.
3583 :    
3584 :     ----------------------------------------------------------------------
3585 :     Name: Matthias Blume
3586 : blume 838 Date: 2001/06/05 15:10:00 EDT
3587 :     Tag: blume-20010605-cm-index
3588 :     Description:
3589 :    
3590 :     0. The "lambdasplit" parameter for class "sml" in CM has been documented.
3591 :    
3592 :     1. CM can now generate "index files". These are human-readable files
3593 :     that list on a per-.cm-file basis each toplevel symbol defined or
3594 :     imported. The location of the index file for
3595 :     <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
3596 :     To enable index-file generation, set CM.Control.generate_index to true
3597 :     or export an environment-symbol: export CM_GENERATE_INDEX=true.
3598 :    
3599 :     The CM manual has been updated accordingly.
3600 :    
3601 :     2. I made some slight modifications to the c-calls API in MLRISC.
3602 :    
3603 :     a) There is now a callback to support saving/restoring of
3604 :     dedicated but caller-save registers around the actual call
3605 :     instruction.
3606 :     b) One can optionally specify a comment-annotation for the
3607 :     call instruction.
3608 :    
3609 :     3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
3610 :     (For example, the comment annotation shows the C prototype of
3611 :     the function being called.)
3612 :    
3613 :     ----------------------------------------------------------------------
3614 :     Name: Matthias Blume
3615 : blume 837 Date: 2001/06/01 13:30:00 EDT
3616 :     Tag: blume-20010601-nlffi-cleanup
3617 :     Description:
3618 :    
3619 :     This is mostly a cleanup of MLFFI stuff:
3620 :    
3621 :     - some signature files have been put into a more exposed place
3622 :     - the ugly 'f type parameter is gone (simplifies types tremendously!)
3623 :     - ml-nlffigen changed accordingly
3624 :     - tutorial updated
3625 :    
3626 :     Other changes:
3627 :    
3628 :     - author's affiliation in CM manual(s) updated
3629 :     - some more recognized keywords added to Allen's sml.sty
3630 :    
3631 :     ----------------------------------------------------------------------
3632 :     Name: Matthias Blume
3633 : blume 836 Date: 2001/05/25 15:30:00 EDT
3634 :     Tag: blume-20010525-iptr
3635 :     Description:
3636 :    
3637 :     - put the official 110.33-README (as it appears on the ftp server) under
3638 :     CVS
3639 :     - fixed a small bug related to incomplete pointer types in
3640 :     ml-nlffigen
3641 :     - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
3642 :     (it does not need the 'f type parameter)
3643 :    
3644 :     ----------------------------------------------------------------------
3645 :     Name: Matthias Blume
3646 : blume 834 Date: 2001/05/23 14:30:00 EDT
3647 :     Tag: Release_110_33
3648 :     Description:
3649 :    
3650 :     New version number (110.33). New bootfiles.
3651 :    
3652 :     ----------------------------------------------------------------------
3653 :     Name: Matthias Blume
3654 : blume 833 Date: 2001/05/22 18:06:00 EDT
3655 :     Tag: blume-20010522-targets
3656 :     Description:
3657 :    
3658 :     Made install.sh use file config/targets.customized if it exists, falling
3659 :     back to config/targets if it doesn't. This way one can have a customized
3660 :     version of the targets file without touching the "real thing", thus
3661 :     eliminating the constant fear of accidentally checking something bogus
3662 :     back into the CVS repository... (File config/targets.customized must
3663 :     not be added to the repository!)
3664 :    
3665 :     ----------------------------------------------------------------------
3666 :     Name: Matthias Blume
3667 : blume 832 Date: 2001/05/22 16:30:00 EDT
3668 :     Tag: blume-20010522-minitut
3669 :     Description:
3670 :    
3671 :     1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
3672 :     struct returns.
3673 :     2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt. This is some very
3674 :     incomplete, preliminary documentation for NLFFI.
3675 :    
3676 :     ----------------------------------------------------------------------
3677 :     Name: Matthias Blume
3678 : blume 829 Date: 2001/05/14 11:30:00 EDT
3679 :     Tag: blume-20010514-script
3680 :     Description:
3681 :    
3682 :     Some bugs in install script fixed.
3683 :    
3684 :     In addition to that I also made a slight change to the NLFFI API:
3685 :     Functors generated by ml-nlffigen now take the dynamic library as a
3686 :     straight functor argument, not as a suspended one. (The original
3687 :     functor code used to force the suspension right away anyway, so there
3688 :     was nothing gained by this complication of the interface.)
3689 :    
3690 :     ----------------------------------------------------------------------
3691 :     Name: Matthias Blume
3692 : blume 828 Date: 2001/05/11 14:35:00 EDT
3693 :     Tag: blume-20010511-ml-nlffi
3694 :     Description:
3695 :    
3696 :     I finally took the plunge and added my new FFI code to the main
3697 :     repository. For x86-linux it is now ready for prime-time.
3698 :    
3699 :     There are two new subdirectories of "src":
3700 :    
3701 :     - ml-nlffi-lib:
3702 :     The utility library for programs using the FFI interface.
3703 :     Here is the implementation of $/c.cm and its associated low-level
3704 :     partners $/c-int.cm and $/memory.cm.
3705 :     - ml-nlffigen:
3706 :     A stand-alone program for generating ML glue code from C source
3707 :     code.
3708 :    
3709 :     Building ml-nlffigen requires $/ckit-lib.cm.
3710 :    
3711 :     The config/install.sh script has been updates to do the Right Thing
3712 :     (hopefully).
3713 :    
3714 :     Notice that the source tree for the C-Kit will not be put under "src"
3715 :     but directly under the installation root directory. (This is the
3716 :     structure that currently exists on the CVS server when you check out
3717 :     module "sml".) Fortunately, config/install.sh knows about this oddity.
3718 :    
3719 :     Bugs: No documentation yet.
3720 :    
3721 :     ----------------------------------------------------------------------
3722 :     Name: Matthias Blume
3723 : blume 826 Date: 2001/05/09 16:35:00 EDT
3724 :     Tag: blume-20010509-cpscontract
3725 :     Description:
3726 :    
3727 :     Fixed a bug in the accounting code in cpsopt/contract.sml. (The
3728 :     wrapper/unwrapper elimination did not decrement usage counts and some
3729 :     dead variables got overlooked by the dead-up logic.)
3730 :    
3731 :     ----------------------------------------------------------------------
3732 : george 824 Name: Lal George
3733 :     Date: 2001/05/08 17:26:09 EDT
3734 :     Tag: george-20010508-omit-frameptr
3735 :     Description:
3736 :    
3737 :     Changes to implement the omit-frame-pointer optimization to support
3738 :     raw C calls. For now, there is only support on the Intel x86, but
3739 :     other architectures will follow as more experience is gained with this.
3740 :    
3741 :    
3742 :     ----------------------------------------------------------------------
3743 : blume 818 Name: Matthias Blume
3744 : blume 819 Date: 2001/05/07 14:40:00 EDT
3745 :     Tag: blume-20010507-proxies
3746 :     Description:
3747 :    
3748 :     I made into "proxy libraries" all libraries that qualify for such a
3749 :     change. (A qualifying library is a library that has another library or
3750 :     groups as its sole member and repeats that member's export list
3751 :     verbatim. A proxy library avoids this repetition by omitting its export
3752 :     list, effectively inheriting the list that its (only) member exports.
3753 :     See the CM manual for more explanation.)
3754 :     The main effect is that explicit export lists for these libraries
3755 :     do not have to be kepts in sync, making maintenance a bit easier.
3756 :    
3757 :     I also added copyright notices to many .cm-files.
3758 :    
3759 :     Last but not least, I made a new set of bootfiles.
3760 :    
3761 :     ----------------------------------------------------------------------
3762 :     Name: Matthias Blume
3763 : blume 818 Date: 2001/05/04 17:00:00 EDT
3764 :     Tag: blume-20010504-cm-lsplit
3765 :     Description:
3766 :    
3767 :     0. John merged pending changes to $/smlnj-lib.cm
3768 :    
3769 :     1. Allen's previous change accidentally backed out of one of Lal's
3770 :     earlier changes. I undid this mistake (re-introducing Lal's change).
3771 :    
3772 :     2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
3773 :     within the compiler where applicable. There is some code simplification
3774 :     because of that.
3775 :    
3776 :     3. The "split" phase (in FLINT) is now part of the default list of phases.
3777 :     Compiler.Control.LambdaSplitting.* can be used to globally control the
3778 :     lambda-splitting (cross-module-inlining) engine. In addition to that,
3779 :     it can now also be controlled on a per-source basis: CM has been taught
3780 :     a new tool parameter applicable to ML source files.
3781 :    
3782 :     - To turn lambda-splitting off completely:
3783 :     local open Compiler.Control.LambdaSplitting in
3784 :     val _ = set Off
3785 :     end
3786 :     - To make "no lambda-splitting" the global default (but allow per-source
3787 :     overriding); this is the initial setting:
3788 :     local open Compiler.Control.LambdaSplitting in
3789 :     val _ = set (Default NONE)
3790 :     end
3791 :     - To make "lambda-splitting with aggressiveness a" the global default
3792 :     (and allow per-source overriding):
3793 :     local open Compiler.Control.LambdaSplitting in
3794 :     val _ = set (Default (SOME a))
3795 :     end
3796 :    
3797 :     - To turn lambda-splitting off for a given ML souce file (say: a.sml)
3798 :     write (in the respective .cm-file):
3799 :     a.sml (lambdasplitting:off)
3800 :     - To turn lambda-splitting for a.sml on with minimal aggressiveness:
3801 :     a.sml (lambdasplitting:on)
3802 :     - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
3803 :     <a> is a decimal non-negative integer):
3804 :     a.sml (lambdasplitting:<a>)
3805 :     - To turn lambda-splitting for a.sml on with maximal aggressiveness:
3806 :     a.sml (lambdasplitting:infinity)
3807 :     - To use the global default for a.sml:
3808 :     a.sml (lambdasplitting:default)
3809 :     or simply
3810 :     a.sml
3811 :    
3812 :     ----------------------------------------------------------------------
3813 : leunga 815 Name: Allen Leung
3814 :     Date: 2001/05/04 01:57:00 EDT
3815 :     Tag: leunga-20010504-sync
3816 :     Description:
3817 : leunga 788
3818 : leunga 815 MLRISC features.
3819 :    
3820 :     1. Fix to CMPXCHG instructions.
3821 :     2. Changed RA interface to allow annotations in callbacks.
3822 :     3. Added a new method to the stream interface to allow annotations updates.
3823 :    
3824 : george 749 ----------------------------------------------------------------------
3825 : blume 812 Name: Matthias Blume
3826 : blume 814 Date: 2001/05/01 11:45:00 EDT
3827 :     Tag: blume-20010501-pcedittmp
3828 :     Description:
3829 :    
3830 :     Changed install.sh to use the current working directory instead of
3831 :     /usr/tmp for a temporary file (pcedittmp). The previous choice
3832 :     of /usr/tmp caused trouble with MacOS X because of file premission
3833 :     problems.
3834 :    
3835 :     ----------------------------------------------------------------------
3836 :     Name: Matthias Blume
3837 : blume 812 Date: 2001/04/20 11:10:00 EDT
3838 :     Tag: blume-20010420-inMLflag
3839 :     Description:
3840 :    
3841 :     - added vp_limitPtrMask to vproc-state.h
3842 :     (for use by the raw-C-calls mechanism to implement proper interrupt
3843 :     handling)
3844 :     - made the ML compiler aware of various data-structure offsets so it
3845 :     can generate code for accessing the vp_inML flag and vp_limitPtrMask
3846 :     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
3847 :     raw C-calls
3848 :    
3849 :     ----------------------------------------------------------------------
3850 : george 810 Name: Lal George
3851 :     Date: 2001/04/20 09:15:28 EDT
3852 :     Tag: george-20010420-macosX
3853 :     Description:
3854 :    
3855 :     - Changes to port to Mac OS X; Darwin.
3856 :    
3857 :     - In the process I found that sqrt was broken on the PPC, because the
3858 :     fsqrt instruction is not implemented.
3859 :    
3860 :     ----------------------------------------------------------------------
3861 : blume 799 Name: Matthias Blume
3862 : blume 808 Date: 2001/04/18 12:45:00 EDT
3863 :     Tag: blume-20010418-ccalls
3864 :     Description:
3865 :    
3866 :     - fixed two off-by-4 errors in the x86-specific c-calls implementation
3867 :     (this bug prevented structure arguments containing pointers from being
3868 :     passed correctly)
3869 :     - changed the raw-C-call code in mlriscGen.sml in such a way that
3870 :     structure arguments are represented as a pointer to the beginning
3871 :     of the structure (instead of having a series of synthesized arguments,
3872 :     one for each structure member)
3873 :    
3874 :     - made makeml script's verbosity level configurable via environment
3875 :     variable (MAKEML_VERBOSITY)
3876 :    
3877 : blume 813 - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
3878 : blume 808 in rawmem-x86.sml; we are now using the real thing
3879 :    
3880 :     ----------------------------------------------------------------------
3881 :     Name: Matthias Blume
3882 : blume 806 Date: 2001/03/22 16:25:00 EST
3883 :     Tag: blume-20010322-bootfiles
3884 :     Description:
3885 :    
3886 :     Created a new set of bootfiles (for your automatic installation convenience).
3887 :    
3888 :     ----------------------------------------------------------------------
3889 :     Name: Matthias Blume
3890 : blume 805 Date: 2001/03/22 15:10:00 EST
3891 :     Tag: blume-20010322-rawmem-parcm
3892 :     Description:
3893 :    
3894 :     1. All "raw memory access" primitives for the new FFI are implemented now
3895 :     (at least on the x86).
3896 :     2. Some further cleanup of CM's parallel make mechanism.
3897 :    
3898 :     ----------------------------------------------------------------------
3899 :     Name: Matthias Blume
3900 : blume 801 Date: 2001/03/19 17:53:00 EST
3901 :     Tag: blume-20010319-parallel
3902 :     Description:
3903 :    
3904 :     Parallel make (using compile servers) now works again.
3905 :    
3906 :     To this end, CM.stabilize and CMB.make have been modified to work in
3907 :     two passes when compile servers are attached:
3908 :     1. Compile everything, do not perform stabilization; this pass
3909 :     uses compile servers
3910 :     2. Stabilize everything; this pass does not use compile servers
3911 :     If there are no compile servers, the two passes are combined into one
3912 :     (as before). Splitting the passes increases the inherent parallelism
3913 :     in the dependency graph because the entire graph including all
3914 :     libraries is available at the same time. This, in turn, improves
3915 :     server utilization. The downside is that the master process will
3916 :     have to do some extra work after compilation is done (because for
3917 :     technical reasons it must re-read all the binfiles during stabilization).
3918 :    
3919 :     ----------------------------------------------------------------------
3920 :     Name: Matthias Blume
3921 : blume 800 Date: 2001/03/16 12:22:00 EST
3922 :     Tag: blume-20010316-bootfiles
3923 :     Description:
3924 :    
3925 :     Created a new set of bootfiles (for your automatic installation convenience).
3926 :    
3927 :     ----------------------------------------------------------------------
3928 :     Name: Matthias Blume
3929 : blume 799 Date: 2001/03/16 11:00:00 EST
3930 :     Tag: blume-20010316-MLTREE-fixup
3931 :     Description:
3932 :    
3933 :     This is a minor fixup for an (untagged) earlier commit by Allen.
3934 :     (A file was missing).
3935 :    
3936 :     ----------------------------------------------------------------------
3937 : leunga 788 Name: Allen Leung
3938 : leunga 796 Date: Mon Mar 5 18:54:57 EST 2001
3939 :     Tag: leunga-20010305-cut-support
3940 :    
3941 :     1. New support for alternative control-flow in MLTREE.
3942 :     Currently we support
3943 :    
3944 :     FLOW_TO(CALL ...., [k1,...,kn])
3945 :    
3946 :     This is needed for 'cuts to' in C-- and try/handle-like constructs
3947 :     in Moby
3948 :    
3949 :     New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
3950 :    
3951 :     2. Register Allocator
3952 :    
3953 :     Changes in interface [from Fermin, John]
3954 :    
3955 :     3. Alpha 8-bit SLL support [Fermin]
3956 :    
3957 :     4. All architectures
3958 :    
3959 :     A new module (ClusterExpandCopies) for expanding parallel copies.
3960 :    
3961 :     ----------------------------------------------------------------------
3962 :     Name: Allen Leung
3963 : leunga 788 Date: 2001/02/27 23:07:00 EST
3964 :     Tag: leunga-20010227-minor-stuff
3965 :    
3966 :     1. Alpha bug fix for CMOVNE
3967 :     2. Handle mltree COND(..,FCMP ...,...)
3968 :     3. Bug fix in simplifier
3969 :    
3970 :     ----------------------------------------------------------------------
3971 : blume 777 Name: Matthias Blume
3972 : blume 781 Date: 2001/01/30 17:50:00 EST
3973 :     Tag: blume-20010130-sync
3974 :     Description:
3975 :    
3976 :     This is just a minor update to sync my devel branch with the main brach.
3977 :     The only visible change is the addition of some README files.
3978 :    
3979 :     ----------------------------------------------------------------------
3980 :     Name: Matthias Blume
3981 : blume 778 Date: 2001/01/12 23:30:00 JST
3982 :     Tag: blume-20010112-bootfiles
3983 :     Description:
3984 :    
3985 :     Made a new set of bootfiles that goes with the current state of the
3986 :     repository.
3987 :    
3988 :     ----------------------------------------------------------------------
3989 :     Name: Matthias Blume
3990 : blume 777 Date: 2001/01/12 21:20:00 JST
3991 :     Tag: blume-20010112-sync
3992 :     Description:
3993 :    
3994 :     I am just flushing out some minor changes that had accumulated in
3995 :     my private branch in order to sync with the main tree. (This is
3996 :     mainly because I had CVS trouble when trying to merge _into_ my
3997 :     private branch.)
3998 :    
3999 :     Most people should be completely unaffected by this.
4000 :    
4001 :     ----------------------------------------------------------------------
4002 : leunga 775 Name: Allen Leung
4003 :     Date: Thu Jan 11 21:03:00 EST 2001
4004 :     Tag: leunga-20010111-labexp=mltree
4005 :     Description:
4006 :    
4007 :     1. Removed the type LabelExp and replace it by MLTree.
4008 :     2. Rewritten mltree-simplify with the pattern matcher tool.
4009 :     3. There were some bugs in alpha code generator which would break
4010 :     64-bit code generation.
4011 :     4. Redo the tools to generate code with the
4012 :     5. The CM files in MLRISC (and in src/system/smlnj/MLRISC)
4013 :     are now generated by perl scripts.
4014 :    
4015 :     ----------------------------------------------------------------------
4016 : blume 771 Name: Matthias Blume
4017 : blume 774 Date: 2001/01/10 21:55:00 JST
4018 :     Tag: blume-20010110-rcc
4019 :     Description:
4020 :    
4021 :     The RCC stuff now seems to work (but only on the x86).
4022 :     This required hacking of the c-calls interface (and -implementation) in
4023 :     MLRISC.
4024 :    
4025 :     Normal compiler users should be unaffected.
4026 :    
4027 :     ----------------------------------------------------------------------
4028 :     Name: Matthias Blume
4029 : blume 773 Date: 2001/01/09 01:20:00 JST
4030 :     Tag: blume-20010109-rcc
4031 :     Description:
4032 :    
4033 :     This is a fairly big patch, flushing out a large number of pending
4034 :     changes that I made to my development copy over the last couple of days.
4035 :    
4036 :     Of practical relevance at this moment is a workaround for a pickling
4037 :     bug that Allen ran into the other day. The cause of the bug itself is
4038 :     still unknown and it might be hard to fix it properly, but the
4039 :     workaround has some merits of its own (namely somewhat reducing pickling
4040 :     overhead for certain libraries). Therefore, I think this solution should
4041 :     be satisfactory at this time.
4042 :    
4043 :     The rest of the changes (i.e., the vast majority) has to do with my
4044 :     ongoing efforts of providing direct support for C function calls from
4045 :     ML. At the moment there is a new primop "RAW_CCALL", typing magic
4046 :     in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
4047 :     case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
4048 :     translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
4049 :     handle RCC.
4050 :    
4051 :     The last part (the changes to mlriscGen.sml) are still known to be
4052 :     wrong on the x86 and not implemented on all other architectures. But
4053 :     the infrastructure is in place. I had to change a few functor
4054 :     signatures in the backend to be able to route the CCalls interface
4055 :     from MLRISC there, and I had to specialize the mltree type (on the
4056 :     x86) to include the necessary extensions. (The extensions themselves
4057 :     were already there and redy to go in MLRISC/x86).
4058 :    
4059 :     Everything should be very happy as soon as someone helps me with
4060 :     mlriscGen.sml...
4061 :    
4062 :     In any case, nothing of this should matter to anyone as long as the
4063 :     new primop is not being used (which is going to be the case unless you
4064 :     find it where I hid it :). The rest of the compiler is completely
4065 :     unaffected.
4066 :    
4067 :     ----------------------------------------------------------------------
4068 :     Name: Matthias Blume
4069 : blume 772 Date: 2001/01/05 00:30:00 JST
4070 :     Tag: blume-20010105-primops
4071 :     Description:
4072 :    
4073 :     Added some experimental support for work that I am doing right now.
4074 :     These changes mostly concern added primops, but there is also a new
4075 :     experimental C library in the runtime system (but currently not enabled
4076 :     anywhere except on Linux/X86).
4077 :    
4078 :     In the course of adding primops (and playing with them), I discovered that
4079 :     Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
4080 :     broken. (Zhong was very right he labeled this stuff as "major gross hack".)
4081 :     To recover, I made type information in INL_PRIM mandatory and changed
4082 :     prim.sml as well as built-in.sml accordingly. The InLine structure now
4083 :     has complete, correct type information (i.e., no bottom types).
4084 :    
4085 :     Since all these changes mean that we need new binfiles, I also bumped the
4086 :     version number to 110.32.1.
4087 :    
4088 :     ----------------------------------------------------------------------
4089 :     Name: Matthias Blume
4090 : blume 771 Date: 2000/12/30 22:10:00 JST
4091 :     Tag: blume-20001230-various
4092 :     Description:
4093 :    
4094 :     Added proxy libraries for MLRISC and let MLRISC libraries refer
4095 :     to each other using path anchors. (See CM manual for explanation.)
4096 :    
4097 :     Updated CM documentation.
4098 :    
4099 :     Fixed some bugs in CM.
4100 :    
4101 :     Implemented "proxy" libraries (= syntactic sugar for CM).
4102 :    
4103 :     Added "-quiet" option to makeml and changed runtime system accordingly.
4104 :    
4105 :     Added cleanup handler for exportML to reset timers and compiler stats.
4106 :    
4107 :     ----------------------------------------------------------------------
4108 : george 761 Name: Lal George
4109 :     Date: 2000/12/22 22:22:58 EST 2000
4110 :     Tag: Release_110_32
4111 :     Description:
4112 :    
4113 :     Infinite precision used throughout MLRISC.
4114 :     see MLRISC/mltree/machine-int.sig
4115 :    
4116 :     ----------------------------------------------------------------------
4117 : blume 756 Name: Matthias Blume
4118 : blume 760 Date: 2000/12/22 23:16:00 JST
4119 :     Tag: blume-20001222-warn
4120 :     Description:
4121 : blume 759
4122 : blume 760 Corrected wording and formatting of some CM warning message which I
4123 :     broke in my previous patch.
4124 : blume 759
4125 :     ----------------------------------------------------------------------
4126 :     Name: Matthias Blume
4127 : blume 763 Date: 2000/12/22 21:20:00 JST
4128 :     Tag: blume-20001222-anchorenv
4129 :     Description:
4130 :    
4131 :     Fixed CM's handling of anchor environments in connection with CMB.make.
4132 :    
4133 :     ----------------------------------------------------------------------
4134 :     Name: Matthias Blume
4135 : blume 758 Date: 2000/12/22 13:15:00 JST
4136 :     Tag: blume-20001222-cleanup
4137 :     Description:
4138 :    
4139 :     Removed src/cm/ffi which does not (and did not) belong here.
4140 :    
4141 :     ----------------------------------------------------------------------
4142 :     Name: Matthias Blume
4143 : blume 757 Date: 2000/12/21 23:55:00 JST
4144 :     Tag: blume-20001221-exn
4145 :     Description:
4146 :    
4147 :     Probably most important: CM no longer silently swallows all exceptions
4148 :     in the compiler.
4149 :     Plus: some other minor CM changes. For example, CM now reports some
4150 :     sizes for generated binfiles (code, data, envpickle, lambdapickle).
4151 :    
4152 :     ----------------------------------------------------------------------
4153 :     Name: Matthias Blume
4154 : blume 756 Date: 2000/12/15 00:01:05 JST
4155 :     Tag: blume-20001215-dirtool
4156 :     Description:
4157 :    
4158 :     - "dir" tool added.
4159 :     - improvements and cleanup to Tools structure
4160 :     - documentation updates
4161 :    
4162 :     ----------------------------------------------------------------------
4163 : leunga 752 Name: Allen Leung
4164 : leunga 755 Date: Thu Dec 14 03:45:24 EST 2000
4165 :     Description:
4166 :     Tag: leunga-20001214-int-inf
4167 :     Description:
4168 :    
4169 :     In IntInf, added these standard functions, which are missing from our
4170 :     implementation:
4171 :    
4172 :     andb : int * int -> int
4173 :     xorb : int * int -> int
4174 :     orb : int * int -> int
4175 :     notb : int -> int
4176 :     << : int * word -> int
4177 :     ~>> : int * word -> int
4178 :    
4179 :     Not tested, I hope they are correct.
4180 :    
4181 :     ----------------------------------------------------------------------
4182 :     Name: Allen Leung
4183 : leunga 752 Date: Fri Dec 8 19:23:26 EST 2000
4184 :     Description:
4185 :     Tag: leunga-20001208-nowhere
4186 :     Description:
4187 :    
4188 :     Slight improvements to the 'nowhere' tool to handle OR-patterns,
4189 :     to generate better error messages etc. Plus a brief manual.
4190 :    
4191 :     ----------------------------------------------------------------------
4192 : george 749 Name: Lal George
4193 :     Date: 2000/12/08 09:54:02 EST 2000
4194 :     Tag: Release_110_31
4195 :     Description:
4196 : george 705
4197 : george 749 - Version 110.31
4198 : leunga 591 ----------------------------------------------------------------------
4199 : leunga 744 Name: Allen Leung
4200 :     Date: Thu Dec 7 22:01:04 EST 2000
4201 :     Tag: leunga-20001207-cell-monster-hack
4202 :     Description:
4203 :    
4204 :     Major MLRISC internal changes. Affect all clients.
4205 :     Summary:
4206 :    
4207 :     1. Type CELLS.cell = int is now replaced by a datatype.
4208 :     As a result, the old regmap is now gone. Almost all interfaces
4209 :     in MLRISC change as a consequence.
4210 :    
4211 :     2. A new brand version of machine description tool (v3.0) that generates
4212 :     modules expecting the new interface. The old version is removed.
4213 :    
4214 :     3. The RA interface has been further abstracted into two new functors.
4215 :     RISC_RA and X86RA. These functors have much simpler interfaces.
4216 :     [See also directory MLRISC/demo.]
4217 :    
4218 :     4. Some other new source->source code generation tools are available:
4219 :    
4220 :     a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
4221 :     b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
4222 :     I use this tool to generate the peephole optimizers---with the new
4223 :     cell type changes, peephole rules are becoming difficult to write
4224 :     without conditional pattern matching.
4225 :    
4226 :     5. More Intmap -> IntHashTable change. Previous changes by Matthias didn't
4227 :     cover the entire MLRISC source tree so many things broke.
4228 :    
4229 :     6. CM files have been moved to the subdirectory MLRISC/cm.
4230 :     They are moved because there are a lot of them and they clutter up the
4231 :     root dir.
4232 :    
4233 :     7. More detailed documentation to come...
4234 :    
4235 :     NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
4236 :     a makeml -rebuild first. This is because of other other
4237 :     changes that Matthias has made (see below).
4238 :    
4239 :    
4240 :     ----------------------------------------------------------------------
4241 : blume 733 Name: Matthias Blume
4242 : blume 742 Date: 2000/11/30 23:12:00 JST
4243 :     Tag: blume-20001130-filereorg
4244 :     Description:
4245 :    
4246 :     Some manual updates and some file reorganizations in CM.
4247 :    
4248 :     ----------------------------------------------------------------------
4249 :     Name: Matthias Blume
4250 : blume 737 Date: 2000/11/24 17:45:00 JST
4251 :     Tag: blume-20001124-link
4252 :     Description:
4253 :    
4254 :     Drastically improved link traversal code for the case that the dynamic
4255 :     value was already loaded at bootstrap time. As a result, CM and CMB
4256 :     now both load blazingly fast -- even on a very slow machine. Also,
4257 :     memory consumption has been further reduced by this.
4258 :    
4259 :     Warning: The format of the PIDMAP file has changed. THerefore, to
4260 :     bootstrap you have to do this:
4261 :    
4262 :     1. Run CMB.make
4263 :     2. Make a symbolic link for the boot directory:
4264 :     ln -s sml.boot.ARCH-OS xxx
4265 :     3. "Rebuild" the boot directory:
4266 :     ./makeml -boot xxx -rebuild sml ; rm xxx
4267 :     4. Boot normally:
4268 :     ./makeml
4269 :    
4270 :     ----------------------------------------------------------------------
4271 :     Name: Matthias Blume
4272 : blume 735 Date: 2000/11/21 21:20:00 JST
4273 :     Tag: blume-20001121-tools
4274 :     Description:
4275 :    
4276 :     Continued hacking on autoloading problem -- with success this time.
4277 :     Also changed tool-plugin mechanism. See new CM manual.
4278 :    
4279 :     ----------------------------------------------------------------------
4280 :     Name: Matthias Blume
4281 : blume 734 Date: 2000/11/19 14:30:00 JST
4282 :     Tag: blume-20001119-autoload
4283 :     Description:
4284 :    
4285 :     Some hacking to make autoloading faster. Success for CMB, no success
4286 :     so far for CM. There is a reduced structure CM' that autoloads faster.
4287 :     (This is a temporary, non-documented hack to be eliminated again when
4288 :     the general problem is solved.)
4289 :    
4290 :     ----------------------------------------------------------------------
4291 :     Name: Matthias Blume
4292 : blume 733 Date: 2000/11/17 14:10:00 JST
4293 :     Tag: blume-20001117-pickle-lib
4294 :     Description:
4295 :    
4296 :     1. Eliminated comp-lib.cm
4297 :     2. Made pickle-lib.cm
4298 :     3. Eliminated all uses of intset.sml (from comp-lib.cm)
4299 :