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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 :     Name:
11 :     Date:
12 :     Tag: <post-commit CVS tag>
13 :     Description:
14 : leunga 591 ----------------------------------------------------------------------
15 : blume 652 Name: Matthias Blume
16 : blume 656 Date: 2000/06/09 12:40:00
17 :     Tag: blume-20000609-log
18 :     Description:
19 :    
20 :     - Removed all(?) remaining RCS Log entries from sources.
21 :    
22 :     - Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
23 :     anchored paths).
24 :    
25 :     ----------------------------------------------------------------------
26 :     Name: Matthias Blume
27 : blume 653 Date: 2000/06/07 17:00:00 JST
28 :     Tag: blume-20000607-no-implicit-anchors
29 :     Description:
30 :    
31 :     1. This update changes the default setting for
32 :     CM.Control.implicit_anchors from true to false. This means that
33 :     implicit anchors are no longer permitted by default. I also tried to
34 :     make sure that nothing else still relies on implicit anchors.
35 :     (This is the next step on the schedule towards a CM that does not even
36 :     have the notion of implicit anchors anymore.)
37 :    
38 :     2. More CM manual updates.
39 :    
40 :     3. I managed to track down and fix the pickling bug I mentioned last
41 :     time. Because of the previously existing workaround, this entails no
42 :     immediate practical changes.
43 :    
44 :     ----------------------------------------------------------------------
45 :     Name: Matthias Blume
46 : blume 652 Date: 2000/06/06 11:15:00 JST
47 :     Tag: blume-20000606-lazierpickle
48 :     Description:
49 :    
50 :     !!!! NEW BOOT FILES !!!!
51 :    
52 :     * The main purpose of this update is to make library pickles lazier in
53 :     order to reduce the initial space penalty for autoloading a library.
54 :     As a result, it is now possible to have $smlnj/compiler.cm
55 :     pre-registered. This should take care of the many complaints or
56 :     inquiries about missing structure Compiler. This required changes to
57 :     CM's internal data structures and small tweaks to some algorithms.
58 :    
59 :     As a neat additional effect, it is no longer necessary (for the sake
60 :     of lean heap image files) to distinguish between a "minimal" CM and a
61 :     "full" CM. Now, there is only one CM (i.e., the "full" version:
62 :     $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
63 :     interactive top level. ($smlnj/cm/minimal.cm is gone.)
64 :    
65 :     To make the life of compiler-hackers easier, "makeml" now also
66 :     pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm). In other
67 :     words, after you bootstrap a new sml for the first time, you will not
68 :     have to autoload $smlnj/cmb.cm again afterwards. (The first time
69 :     around you will still have to do it, though.)
70 :    
71 :     * A second change consists of major updates to the CM manual. There
72 :     are now several appendices with summary information and also a full
73 :     specification of the CM description file syntax.
74 :    
75 :     * In directory src/system I added the script "allcross". This script
76 :     invokes sml and cross-compiles the compiler for all supported
77 :     architectures. (Useful when providing a new set of boot files.)
78 :    
79 :     * There seems to be a latent bug in my "lazy pickles" mechanism. I
80 :     added a small tweak to pickle-util.sml to work around this problem,
81 :     but it is not a proper fix yet. I will investigate further. (The
82 :     effect of the bug was an inflation of library pickle size.)
83 :    
84 :     * Version number increased to 110.28.1 (to avoid compatibility problems).
85 :    
86 :     ----------------------------------------------------------------------
87 : leunga 646 Name: Allen Leung
88 : leunga 648 Date: 2000/05/25 17:28 EDT
89 :     Tag: leunga-20000525-ra
90 :     Description:
91 :    
92 :     Fixed a bug in freezing phase of the register allocator.
93 :    
94 :     ----------------------------------------------------------------------
95 :     Name: Allen Leung
96 : leunga 647 Date: 2000/05/15 22:53 EDT
97 : leunga 646 Tag: leunga-20000515-alpha-x86-ra
98 :     Description:
99 :    
100 :     1. Alpha
101 :    
102 :     Slight cleanup. Removed the instruction SGNXL
103 :    
104 :     2. X86
105 :    
106 :     Added the following instructions to the instruction set:
107 :    
108 :     ROLx, RORx,
109 :     BTx, BTSx, BTLx, BTRx,
110 :     XCHGx, and variants with the LOCK prefix
111 :    
112 :     3. Register Allocation
113 :    
114 :     The module ra-rewrite-with-renaming has been improved.
115 :    
116 : leunga 647 These have no effect on SML/NJ.
117 :    
118 : leunga 646 ----------------------------------------------------------------------
119 : blume 642 Name: Matthias Blume
120 : blume 645 Date: 2000/05/15 16:20:00 JST
121 :     Tag: blume-20000515-lightrebuild
122 :     Description:
123 :    
124 :     1. I added an alternative to "-rebuild" to "makeml". The difference is
125 :     that prior to calling CMB.make' the CM-variable "LIGHT" will be
126 :     defined. In effect, the command will not build any cross-compiler
127 :     backends and therefore finish more quickly.
128 :    
129 :     The "fixpt" script also takes a "-light" switch to be able to use
130 :     this new facility while compiling for a fixpoint.
131 :    
132 :     2. I replaced all mentions of anchored paths in group owner specifications
133 :     with simple relative paths (usually starting with "..").
134 :     The rationale is that a library's internal workings should not be
135 :     compromised by the lack of some anchor. (An anchor is necessary
136 :     for someone who wants to refer to the library by an anchored path,
137 :     but it should not be necessary to build the same library in the first
138 :     place.)
139 :    
140 :     3. I changed the way CM's tool mechanism determines the shell command
141 :     string used for things like ml-yacc etc. so that it does not break
142 :     when CM.Control.implicit_anchors is turned off.
143 :    
144 :     ----------------------------------------------------------------------
145 :     Name: Matthias Blume
146 : blume 644 Date: 2000/05/12 18:20:00 JST
147 :     Tag: blume-20000512-ml-build
148 :     Description:
149 :    
150 :     Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
151 :     getting installed properly (by config/install.sh).
152 :    
153 :     ----------------------------------------------------------------------
154 :     Name: Matthias Blume
155 : blume 643 Date: 2000/05/12 17:30:00 JST
156 :     Tag: blume-20000512-anchors
157 :     Description:
158 :    
159 :     !!! NEW BOOT FILES !!!
160 :    
161 :     This change is in preparation of fading out support for "implicitly
162 :     anchored path names". I went through all sources and used the
163 :     explicit (and relatively new) $-notation. See system/README and the
164 :     CM manual for more info on this.
165 :    
166 :     I also modified the anchoring scheme for some things such as "smlnj",
167 :     "MLRISC", "cm", etc. to take advantage of the fact that explicit
168 :     anchors are more expressive: anchor name and first arc do not have to
169 :     coincide. This entails the following user-visible change:
170 :    
171 :     You have to write $smlnj/foo/bar instead of smlnj/foo/bar. In
172 :     particular, when you fire up sml with a command-line argument, say,
173 :     e.g.:
174 :    
175 :     sml '$smlnj/cmb.cm'
176 :    
177 :     At the ML toplevel prompt:
178 :    
179 :     CM.autoload "$smlnj/cmb.cm";
180 :    
181 :     There is also a new controller in CM.Control that can be used to turn
182 :     off all remaining support for implicit anchors by saying:
183 :    
184 :     CM.autoload "$smlnj/
185 :     #set CM.Control.implicit_anchors false;
186 :    
187 :     This causes CM to reject implicitly anchored paths. This is (for the
188 :     time being) less permissive than the "final" version where there will
189 :     be no more such implicit anchors and relative paths will be just that:
190 :     relative.
191 :    
192 :     The next step (version after next version?) will be to make the
193 :     default for CM.Control.implicit_anchors false. After the dust has
194 :     settled, I can then produce the "final" version of this...
195 :    
196 :     Note: Since bootstrapping is a bit tricky, I provided new boot files.
197 :    
198 :     ----------------------------------------------------------------------
199 :     Name: Matthias Blume
200 : blume 642 Date: 2000/05/11 16:30:00 JST
201 :     Tag: blume-20000511-sources
202 :     Description:
203 :    
204 :     The main change is that I added function CM.sources as a generalized
205 :     version of the earlier CM.makedepend. This entails the following
206 :     additional changes:
207 :    
208 :     - CM.makedepend has been dropped.
209 :    
210 :     - CM manual has been updated.
211 :    
212 :     - TOOLS signature and API have been changed.
213 :    
214 :     ----------------------------------------------------------------------
215 : leunga 640 Name: Allen Leung
216 : leunga 641 Date: 2000/05/10 21:17 EDT
217 :     Tag: leunga-20000510-moby-c--ssa
218 :     Description:
219 :    
220 :     Various bug fixes and new features for C--, Moby and MLRISC optimizations.
221 :     None of these affect SML/NJ.
222 :    
223 :     1. Register Allocation
224 :    
225 :     a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
226 :     This module tries to remove local (i.e. basic block level) redundancies
227 :     during spilling.
228 :    
229 :     b. A new framework for performing region based register allocation.
230 :     Not yet entirely functional.
231 :    
232 :     2. X86
233 :    
234 :     a. DefUse for POP was missing the stack pointer [found by Lal]
235 :     b. Reload for CALL was incorrect in X86Spill [found by John]
236 :     c. Various fixes in X86Spill so that it can be used correctly for
237 :     the new spilling module.
238 :    
239 :     3. SSA/IR
240 :    
241 :     a. New module ir/dj-dataflow.sml implements elimination based
242 :     data flow analysis.
243 :    
244 :     4. MLRiscGen
245 :    
246 :     a. Fix for gc type annotation
247 :    
248 :     5. MDGen
249 :    
250 :     Various fixes for machine description -> ml code translation. For ssa
251 :     only.
252 :    
253 :     ----------------------------------------------------------------------
254 :     Name: Allen Leung
255 : leunga 640 Date: 2000/05/08 22:17 EDT
256 :     Tag: leunga-20000508-labexp
257 :     Description:
258 :    
259 :     Fermin has found a few assembly problems with constant expressions
260 :     generated in LabelExp. Mostly, the problems involve extra parentheses,
261 :     which choke on dumb assemblers. This is his fix.
262 :    
263 :     ----------------------------------------------------------------------
264 : dbm 635 Name: Dave MacQueen
265 :     Date: 2000/04/09 14:00 EDT
266 :     Tag: dbm-20000502-Version_110_28
267 :     Description:
268 :    
269 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
270 :    
271 :     2. Updated config/version to 110.28
272 :    
273 :     3. Updated config/srcarchiveurl
274 :    
275 :     3. New boot files!
276 :     ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
277 :    
278 :     ----------------------------------------------------------------------
279 : blume 634 Name: Matthias Blume
280 :     Date: 2000/05/01 19:05:00 JST
281 :     Tag: blume-20000501-noweb
282 :     Description:
283 :    
284 :     A new noweb tool has been added. The existing system is entirely
285 :     unaffected by this, but some CM users have asked for renewed noweb
286 :     support. Everything is documented in the CM manual.
287 :    
288 :     New (plugin) libraries:
289 :    
290 :     noweb-tool.cm
291 :     nw-ext.cm
292 :    
293 :     ----------------------------------------------------------------------
294 : dbm 633 Name: Dave MacQueen
295 :     Date: 2000/04/30 12:40PM EDT
296 :     Tag: dbm-20000430-bug_fixes
297 :     Description:
298 :    
299 :     1. Fix for bug 1498
300 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sig
301 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sml
302 :     added toRealArray function
303 :     smlnj/src/compiler/MiscUtil/print/ppobj.sml
304 :     added check for tag Obj.RealArray to array printing case in ppObj
305 :    
306 :     2. Fix for bug 1510
307 :     smlnj/src/compiler/Semant/types/typesutil.sml
308 :     fixed definition of dummyargs (used by equalTycon) so that
309 :     dummy args are distinct types
310 :    
311 :     ----------------------------------------------------------------------
312 : blume 629 Name: Matthias Blume
313 : blume 632 Date: 2000/04/30 01:00:00 JST
314 :     Tag: blume-20000430-versions
315 :     Description:
316 :    
317 :     1. CM version numbering added. This is an implementation of Lal's
318 :     proposal for adding version numbers and version checking to .cm
319 :     files. Lal said that his proposal was just that -- a proposal.
320 :     For the time being I went ahead and implemented it so that people
321 :     can comment on it. Everything is completely backward-compatible
322 :     (except for the stable library format, i.e., new bootfiles!).
323 :    
324 :     As usual, see the CM manual for details.
325 :    
326 :     2. An alternative syntax for anchored paths has been implemented.
327 :     Dave has recently voiced the same concerns that I had when I did
328 :     this, so there should be some support. My take is that eventually
329 :     I will let support for the current syntax (where anchors are
330 :     "implicit") fade out in favor of the new, explicit syntax.
331 :     In order to be backward-compatible, both old and new syntax are
332 :     currently supported.
333 :    
334 :     Again, see the CM manual for details.
335 :    
336 :     3. Parallel make is trying to be slightly smarter: When the master
337 :     process finds a "bottleneck", i.e., when there is only one
338 :     compilation unit that can be compiled and everybody else is
339 :     waiting on it, then it will simply compile it directly instead
340 :     of clumsily telling one of the slaves to do it.
341 :    
342 :     4. Support for "unsharing" added. This is necessary in order to be
343 :     able to have two different versions of the same library running
344 :     at the same time (e.g., for trying out a new MLRISC while still
345 :     having the old MLRISC linked into the current compiler, etc.)
346 :     See the CM manual.
347 :    
348 :     5. Simple "makedepend" functionality added for generating Makefile
349 :     dependency information. (This is rather crude at the moment.
350 :     Expect some changes here in the future.)
351 :    
352 :     6. ".fun" added as a recognized suffix for ML files. Also documented
353 :     explicitly in the manual that the fallback behavior (unknown suffix
354 :     -> ML file) is not an official feature!
355 :    
356 :     7. Small changes to the pickler for stable libraries.
357 :    
358 :     8. Several internal changes to CM (for cleanup/improvement).
359 :    
360 :    
361 :     !!!! NEW BINFILES !!!!
362 :    
363 :     ----------------------------------------------------------------------
364 :     Name: Matthias Blume
365 : blume 631 Date: 2000/04/28 17:30:00 JST
366 :     Tag: blume-20000428-pathconfig
367 :     Description:
368 :    
369 :     1. I changed config/install.sh to remove duplicate entries from the
370 :     lib/pathconfig file at the end. Moreover, the final version of
371 :     lib/pathconfig is sorted alphabetically. The same (sorting) is done
372 :     in src/system/installml.
373 :    
374 :     2. The config/install.sh script now consistently uses relative
375 :     pathnames in lib/pathconfig whenever the anchor is in the lib
376 :     directory. (So far this was true for the libraries that come
377 :     pre-compiled and bundled as part of the bootfiles but not for
378 :     libraries that are compiled by the script itself.)
379 :    
380 :     ----------------------------------------------------------------------
381 :     Name: Matthias Blume
382 : blume 629 Date: 2000/04/26 13:10:00 JST
383 :     Tag: blume-20000426-fun_suffix
384 :     Description:
385 :    
386 :     Added ".fun" as a recognized file name suffix (for ML code).
387 :    
388 :     ----------------------------------------------------------------------
389 : leunga 628 Name: Allen Leung
390 :     Date: 2000/04/25 17:00:00 EST
391 :     Tag: leunga-20000425-alpha-ra
392 :     Description:
393 :    
394 :     1. Alpha
395 :    
396 :     PSEUDOARITH was missing in AlphaRewrite. This causes an endless loop
397 :     in C--.
398 :    
399 :     2. RA
400 :    
401 :     Added a flag "ra-dump-size" to print out the size of the flowgraph
402 :     and the interference graph.
403 :    
404 :     ----------------------------------------------------------------------
405 : dbm 627 Name: Dave MacQueen
406 :     Date: 2000/04/25/
407 :     Tag: dbm-20000425-mlyacc_doc_examples
408 :     Description:
409 :     Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
410 :     Updated all three examples in src/ml-yacc/examples to run
411 :     under 110.* using CM.make.
412 :    
413 :     ----------------------------------------------------------------------
414 : leunga 624 Name: Allen Leung
415 :     Date: 2000/04/20 23:04:00 EST
416 :     Tag: leunga-20000420-ssa-c---stuff
417 :     Description:
418 :    
419 :     This update synchronizes my repository with Yale's. Most of these
420 :     changes, however, do not affect SML/NJ at all (the RA is an exception).
421 :    
422 :     1. Register Allocator
423 :    
424 :     a. An improvement in the interference graph construction:
425 :     Given a copy
426 :    
427 :     s <- t
428 :    
429 : leunga 628 no interference edge between s and t is added for this definition of s.
430 : leunga 624
431 :     b. I've added two new spill heuristic modules that Fermin and I developed
432 :     (in the new library RA.cm). These are unused in SML/NJ but maybe
433 :     useful for others (Moby?)
434 :    
435 :     2. X86
436 :    
437 :     a. Various fixes in the backend provided by Fermin [C--] and Lal.
438 :    
439 :     3. Alpha
440 :    
441 :     a. Added the BSR instruction and code generation that goes with it [C--]
442 :     b. Other fixes too numerous to recount provided by Fermin [C--]
443 :    
444 :     4. Regmaps
445 :    
446 :     a. The regmaps are not initialized with the identity physical bindings
447 :     at creation time. This is unneeded.
448 :    
449 :     5. MLRISC Optimizations
450 :    
451 :     a. The DJ-Graph module can now compute the iterated dominance frontiers
452 :     intersects with liveness incrementally in linear time! Woohoo!
453 :     This is now used in my new SSA construction algorithm.
454 :    
455 :     b. THe branch reorganization module is now smarter about linear chains of
456 :     basic blocks.
457 :    
458 :    
459 :     ----------------------------------------------------------------------
460 : blume 615 Name: Matthias Blume
461 :     Date: 2000/04/12 13:52:00 JST
462 :     Tag: blume_main_v110p27_1
463 :     Description:
464 :    
465 :     Changed install.sh script to handle archive files without version number
466 :     and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
467 :     name of the boot file archive.
468 :    
469 :     ----------------------------------------------------------------------
470 : dbm 607 Name: Dave MacQueen
471 :     Date: 2000/04/09 14:00 EDT
472 :     Tag: dbm-20000410-Version_110_27
473 :     Description:
474 :    
475 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
476 :    
477 :     2. Updated src/config/version to 110.27
478 :    
479 :     3. New boot files!
480 :    
481 :     ----------------------------------------------------------------------
482 : leunga 606 Name: Allen Leung
483 :     Date: 2000/04/09 19:09:00 EST
484 :     Tag: leunga-20000409-misc
485 :     Description:
486 :    
487 :     1. Yet another fix for x86 assembly for idivl, imull, mull and friends.
488 :    
489 :     2. Miscellaneous improvements to MLRISC (unused in sml/nj)
490 :    
491 :     ----------------------------------------------------------------------
492 : monnier 605 Name: Stefan
493 :     Date: 2000/04/07 10:00:00 EDT
494 :     Tag: monnier-20000406-branch-handling
495 :     Description:
496 :    
497 :     Improved handling of branches (mostly those generated from
498 :     polymorphic equality), removed switchoff and changed the
499 :     default optimization settings (more cpsopt and less flintopt).
500 :    
501 :     ----------------------------------------------------------------------
502 : leunga 601 Name: Allen Leung
503 : leunga 602 Date: 2000/04/06 01:30:00 EST
504 :     Tag: leunga-20000406-peephole-x86-SSA-2
505 :     Description:
506 :    
507 :     Forgot a few files.
508 :    
509 :     ----------------------------------------------------------------------
510 :     Name: Allen Leung
511 : leunga 601 Date: 2000/04/06 00:36:00 EST
512 :     Tag: leunga-20000406-peephole-x86-SSA
513 :     Description:
514 :    
515 :     1. New Peephole code
516 :    
517 :     2. Minor improvement to X86 instruction selection
518 :    
519 :     3. Various fixes to SSA and machine description -> code translator
520 :    
521 :     ----------------------------------------------------------------------
522 : blume 595 Name: Matthias Blume
523 :     Date: 2000/04/05 12:30:00 JST
524 :     Tag: blume_main_v110p26p2_3
525 :     Description:
526 :    
527 :     This update just merges three minor cosmetic updates to CM's sources
528 :     to get ready for the 110.27 code freeze on Friday. No functionality
529 :     has changed.
530 :    
531 :     ----------------------------------------------------------------------
532 : leunga 593 Name: Allen Leung
533 : leunga 594 Date: 2000/04/04 19:39:00 EST
534 :     Tag: leunga-20000404-x86-asm
535 :     Description:
536 :    
537 :     1. Fixed a problem in X86 assembly.
538 :    
539 :     Things like
540 :    
541 :     jmp %eax
542 :     jmp (%eax)
543 :    
544 :     should be output as
545 :    
546 :     jmp *%eax
547 :     jmp *(%eax)
548 :    
549 :     2. Assembly output
550 :    
551 :     Added a new flag
552 :    
553 :     "asm-indent-copies" (default to false)
554 :    
555 :     When this flag is on, parallel copies will be indented an extra level.
556 :    
557 :     ----------------------------------------------------------------------
558 :     Name: Allen Leung
559 : leunga 593 Date: 2000/04/04 03:18:00 EST
560 :     Tag: leunga-20000404-C--Moby
561 :     Description:
562 :    
563 :     All of these fixes are related to C--, Moby, and my own optimization
564 :     stuff; so they shouldn't affect SML/NJ.
565 :    
566 :     1. X86
567 :    
568 :     Various fixes related floating point, and extensions.
569 :    
570 :     2. Alpha
571 :    
572 :     Some extra patterns related to loads with signed/zero extension
573 :     provided by Fermin.
574 :    
575 :     3. Assembly
576 :    
577 :     When generating assemby, resolve the value of client defined constants,
578 :     instead of generating symbolic values. This is controlled by the
579 :     new flag "asm-resolve-constants", which is default to true.
580 :    
581 :     4. Machine Descriptions
582 :    
583 :     a. The precedence parser was slightly broken when parsing infixr symbols.
584 :     b. The type generalizing code had the bound variables reversed, resulting
585 :     in a problem during arity raising.
586 :     c. Various fixes in machine descriptions.
587 :    
588 :     ----------------------------------------------------------------------
589 : blume 592 Name: Matthias Blume
590 :     Date: 2000/04/03 16:05:00 JST
591 :     Tag: blume_main_v110p26p2_2
592 :     Description:
593 :    
594 :     I eliminated coreEnv from compInfo. Access to the "Core" structure is
595 :     now done via the ordinary static environment that is context to each
596 :     compilation unit.
597 :    
598 :     To this end, I arranged that instead of "structure Core" as "structure
599 :     _Core" is bound in the pervasive environment. Core access is done via
600 :     _Core (which can never be accidentially rebound because _Core is not a
601 :     legal surface-syntax symbol).
602 :    
603 :     The current solution is much cleaner because the core environment is
604 :     now simply part of the pervasive environment which is part of every
605 :     compilation unit's context anyway. In particular, this eliminates all
606 :     special-case handling that was necessary until now in order to deal
607 :     with dynamic and symbolic parts of the core environment.
608 :    
609 :     Remaining hackery (to bind the "magic" symbol _Core) is localized in the
610 :     compilation mananger's bootstrap compiler (actually: in the "init group"
611 :     handling). See the comments in src/system/smlnj/init/init.cmi for
612 :     more details.
613 :    
614 :     I also tried to track down all mentions of "Core" (as string argument
615 :     to Symbol.strSymbol) in the compiler and replaced them with a
616 :     reference to the new CoreSym.coreSym. Seems cleaner since the actual
617 :     name appears in one place only.
618 :    
619 :     Binfile and bootfile format have not changed, but the switchover from
620 :     the old "init.cmi" to the new one is a bit tricky, so I supplied new
621 :     bootfiles anyway.
622 :    
623 :     ----------------------------------------------------------------------
624 : leunga 591 Name: Allen Leung
625 :     Date: 2000/04/02 21:17:00 EST
626 :     Tag: leunga-20000402-mltree
627 :     Description:
628 : leunga 585
629 : leunga 591 1. Renamed the constructor CALL in MLTREE by popular demand.
630 :     2. Added a bunch of files from my repository. These are currently
631 :     used by other non-SMLNJ backends.
632 :    
633 : leunga 576 ----------------------------------------------------------------------
634 : leunga 590 Name: Allen Leung
635 :     Date: 2000/03/31 21:15:00 EST
636 :     Tag: leunga-20000331-aliasing
637 :     Description:
638 :    
639 :     This update contains a rewritten (and hopefully more correct) module
640 :     for extracting aliasing information from CPS.
641 :    
642 :     To turn on this feature:
643 :    
644 :     Compiler.Control.CG.memDisambiguate := true
645 :    
646 :     To pretty print the region information with assembly
647 :    
648 :     Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
649 :    
650 :     To control how many levels of aliasing information are printed, use:
651 :    
652 :     Compiler.Control.MLRISC.getInt "points-to-show-level" := n
653 :    
654 :     The default of n is 3.
655 :    
656 :     ----------------------------------------------------------------------
657 : dbm 589 Name: David MacQueen
658 :     Date: 2000/03/31 11:15:00 EST
659 :     Tag: dbm-20000331-runtime_fix
660 :     Description:
661 :    
662 :     This update contains:
663 :    
664 :     1. runtime/c-lib/c-libraries.c
665 :     includes added in revision 1.2 caused compilation errors on hppa-hpux
666 :    
667 :     2. fix for bug 1556
668 :     system/Basis/Implementation/NJ/internal-signals.sml
669 :    
670 :     ----------------------------------------------------------------------
671 : blume 587 Name: Matthias Blume
672 : blume 588 Date: 2000/03/31 18:00:00 JST
673 :     Tag: blume_main_v110p26p2_1
674 :     Description:
675 :    
676 :     This update contains:
677 :    
678 :     1. A small change to CM's handling of stable libraries:
679 :     CM now maintains one "global" modmap that is used for all stable
680 :     libraries. The use of such a global modmap maximizes sharing and
681 :     minimizes the need for re-traversing parts of environments during
682 :     modmap construction. (However, this has minor impact since modmap
683 :     construction seems to account for just one percent or less of total
684 :     compile time.)
685 :    
686 :     2. I added a "genmap" phase to the statistics. This is where I got the
687 :     "one percent" number (see above).
688 :    
689 :     3. CM's new tool parameter mechanism just became _even_ better. :)
690 :     - The parser understands named parameters and recursive options.
691 :     - The "make" and "shell" tools use these new features.
692 :     (This makes it a lot easier to cascade these tools.)
693 :     - There is a small syntax change: named parameters use a
694 :    
695 :     <name> : ( <option> ... ) or
696 :     <name> : <string>
697 :    
698 :     syntax. Previously, named parameters were implemented in an
699 :     ad-hoc fashion by each tool individually (by parsing strings)
700 :     and had the form
701 :    
702 :     <name>=<string>
703 :    
704 :     See the CM manual for a full description of these issues.
705 :    
706 :     ----------------------------------------------------------------------
707 :     Name: Matthias Blume
708 : blume 587 Date: 2000/03/30 18:00:00 JST
709 :     Tag: blume_main_v110p26p2_0
710 :     Description:
711 :    
712 :     !!!!! WARNING !!!!!!
713 :     !! New binfiles !!
714 :     !!!!!!!!!!!!!!!!!!!!
715 :    
716 :     This update contains:
717 :    
718 :     1. Moderate changes to CM:
719 :    
720 :     - Changes to CM's tools mechanism. In particular, it is now possible
721 :     to have tools that accept additional "command line" parameters
722 :     (specified in the .cm file at each instance where the tool's class is
723 :     used).
724 :    
725 :     This was done to accomodate the new "make" and "shell" tools which
726 :     facilitate fairly seemless hookup to portions of code managed using
727 :     Makefiles or Shell scripts.
728 :    
729 :     There are no classes "shared" or "private" anymore. Instead, the
730 :     sharing annotation is now a parameter to the "sml" class.
731 :    
732 :     There is a bit of generic machinery for implementing one's own
733 :     tools that accept command-line parameters. However, I am not yet fully
734 :     satisfied with that part, so expect changes here in the future.
735 :    
736 :     All existing tools are described in the CM manual.
737 :    
738 :     - Slightly better error handling. (CM now surpresses many followup
739 :     error messages that tended to be more annoying than helpful.)
740 :    
741 :     2. Major changes to the compiler's static environment data structures.
742 :    
743 :     - no CMStaticEnv anymore.
744 :     - no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
745 :     but it is called Environment), no conversions between different
746 :     kinds of static environments
747 :    
748 :     - There is still a notion of a "modmap", but such modmaps are generated
749 :     on demand at the time when they are needed. This sounds slow, but I
750 :     sped up the code that generates modmaps enough for this not to lead to
751 :     a slowdown of the compiler (at least I didn't detect any).
752 :    
753 :     - To facilitate rapid modmap generation, static environments now
754 :     contain an (optional) "modtree" structure. Modtree annotations are
755 :     constructed by the unpickler during unpickling. (This means that
756 :     the elaborator does not have to worry about modtrees at all.)
757 :     Modtrees have the advantage that they are compositional in the same
758 :     way as the environment data structure itself is compositional.
759 :     As a result, modtrees never hang on to parts of an environment that
760 :     has already been rendered "stale" by filtering or rebinding.
761 :    
762 :     - I went through many, many trials and errors before arriving at the
763 :     current solution. (The initial idea of "linkpaths" did not work.)
764 :     But the result of all this is that I have touched a lot of files that
765 :     depend on the "modules" and "types" data structures (most of the
766 :     elaborator). There were a lot of changes during my "linkpath" trials
767 :     that could have been reverted to their original state but weren't.
768 :     Please, don't be too harsh on me for messing with this code a bit more
769 :     than what was strictly necessary... (I _did_ resist the tempation
770 :     of doing any "global reformatting" to avoid an untimely death at
771 :     Dave's hands. :)
772 :    
773 :     - One positive aspect of the previous point: At least I made sure that
774 :     all files that I touched now compile without warnings (other than
775 :     "polyEqual").
776 :    
777 :     - compiler now tends to run "leaner" (i.e., ties up less memory in
778 :     redundant modmaps)
779 :    
780 :     ----------------------------------------------------------------------
781 : leunga 580 Name: Allen Leung
782 : leunga 585 Date: 2000/03/29 18:00:00
783 :     Tag: leunga-20000327-mlriscGen_hppa_alpha_x86
784 : leunga 586 Boot files (optional): ftp://react-ilp.cs.nyu.edu/leunga/110.26.1-sml.boot.x86-unix-20000330.tar.gz
785 : leunga 585 Description:
786 :    
787 :     This update contains *MAJOR* changes to the way code is generated from CPS
788 :     in the module mlriscGen, and in various backend modules.
789 :    
790 :     CHANGES
791 :     =======
792 :    
793 :     1. MLRiscGen: forward propagation fix.
794 :    
795 :     There was a bug in forward propagation introduced at about the same time
796 :     as the MLRISC x86 backend, which prohibits coalescing to be
797 :     performed effectively in loops.
798 :    
799 :     Effect: speed up of loops in RISC architectures.
800 :     By itself, this actually slowed down certain benchmarks on the x86.
801 :    
802 :     2. MLRiscGen: forward propagating addresses from consing.
803 :    
804 :     I've changed the way consing code is generated. Basically I separated
805 :     out the initialization part:
806 :    
807 :     store tag, offset(allocptr)
808 :     store elem1, offset+4(allocptr)
809 :     store elem2, offset+8(allocptr)
810 :     ...
811 :     store elemn, offset+4n(allocptr)
812 :    
813 :     and the address computation part:
814 :    
815 :     celladdr <- offset+4+alloctpr
816 :    
817 :     and move the address computation part
818 :    
819 :     Effect: register pressure is generally lower as a result. This
820 :     makes compilation of certain expressions much faster, such as
821 :     long lists with non-trivial elements.
822 :    
823 :     [(0,0), (0,0), .... (0,0)]
824 :    
825 :     3. MLRiscGen: base pointer elimination.
826 :    
827 :     As part of the linkage mechanism, we generate the sequence:
828 :    
829 :     L: ... <- start of the code fragment
830 :    
831 :     L1:
832 :     base pointer <- linkreg - L1 + L
833 :    
834 :     The base pointer was then used for computing relocatable addresses
835 :     in the code fragment. Frequently (such as in lots of continuations)
836 :     this is not needed. We now eliminate this sequence whenever possible.
837 :    
838 :     For compile time efficiency, I'm using a very stupid local heuristic.
839 :     But in general, this should be done as a control flow analysis.
840 :    
841 :     Effect: Smaller code size. Speed up of most programs.
842 :    
843 :     4. Hppa back end
844 :    
845 :     Long jumps in span dependence resolution used to depend on the existence
846 :     of the base pointer.
847 :    
848 :     A jump to a long label L was expanded into the following sequence:
849 :    
850 :     LDIL %hi(L-8192), %r29
851 :     LDO %lo(L-8192)(%r29), %r29
852 :     ADD %r29, baseptr, %r29
853 :     BV,n %r0(%r29)
854 :    
855 :     In the presence of change (3) above, this will not work. I've changed
856 :     it so that the following sequence of instructions are generated, which
857 :     doesn't mention the base pointer at all:
858 :    
859 :     BL,n L', %r29 /* branch and link, L' + 4 -> %r29 */
860 :     L': ADDIL L-(L'+4), %r29 /* Compute address of L */
861 :     BV,n %r0(%r29) /* Jump */
862 :    
863 :     5. Alpha back end
864 :    
865 :     New alpha instructions LDB/LDW have been added, as per Fermin's
866 :     suggestions. This is unrelated to all other changes.
867 :    
868 :     6. X86 back end
869 :    
870 :     I've changed andl to testl in the floating point test sequence
871 :     whenever appropriate. The Intel optimization guide states that
872 :     testl is perferable to andl.
873 :    
874 :     7. RA (x86 only)
875 :    
876 :     I've improved the spill propagation algorithm, using an approximation
877 :     of maximal weighted independent sets. This seems to be necessary to
878 :     alleviate the negative effect in light of the slow down in (1).
879 :    
880 :     I'll write down the algorithm one of these days.
881 :    
882 :     8. MLRiscGen: frequencies
883 :    
884 :     I've added an annotation that states that all call gc blocks have zero
885 :     execution frequencies. This improves register allocation on the x86.
886 :    
887 :     BENCHMARKS
888 :     ==========
889 :    
890 :     I've only perform the comparison on 110.25.
891 :    
892 :     The platforms are:
893 :    
894 :     HPPA A four processor HP machine (E9000) with 5G of memory.
895 :     X86 A 300Hhz Pentium II with 128M of memory, and
896 :     SPARC An Ultra sparc 2 with 512M of memory.
897 :    
898 :     I used the following parameters for the SML benchmarks:
899 :    
900 :     @SMLalloc
901 :     HPPA 256k
902 :     SPARC 512k
903 :     X86 256k
904 :    
905 :     COMPILATION TIME
906 :     ----------------
907 :     Here are the numbers comparing the compilation times of the compilers.
908 :     I've only compared 110.25 compiling the new sources versus
909 :     a fixpoint version of the new compiler compiling the same.
910 :    
911 :     110.25 New
912 :     Total Time in RA Spill+Reload Total Time In RA Spill+Reload
913 :     HPPA 627s 116s 2684+3584 599s 95s 1003+1879
914 :     SPARC 892s 173s 2891+3870 708s 116s 1004+1880
915 :     X86 999s 315s 94006+130691 987s 296s 108877+141957
916 :    
917 :     110.25 New
918 :     Code Size Code Size
919 :     HPPA 8596736 8561421
920 :     SPARC 8974299 8785143
921 :     X86 9029180 8716783
922 :    
923 :     So in summary, things are at least as good as before. Dramatic
924 :     reduction in compilation is obtained on the Sparc; I can't explain it,
925 :     but it is reproducible. Perhaps someone should try to reproduce this
926 :     on their own machines.
927 :    
928 :     SML BENCHMARKS
929 :     --------------
930 :    
931 :     On the average, all benchmarks perform at least as well as before.
932 :    
933 :     HPPA Compilation Time Spill+Reload Run Time
934 :     110.25 New 110.25 New 110.25 New
935 :    
936 :     barnesHut 3.158 3.015 4.75% 1+1 0+0 2.980 2.922 2.00%
937 :     boyer 6.152 5.708 7.77% 0+0 0+0 0.218 0.213 2.34%
938 :     count-graphs 1.168 1.120 4.32% 0+0 0+0 22.705 23.073 -1.60%
939 :     fft 0.877 0.792 10.74% 1+3 1+3 0.602 0.587 2.56%
940 :     knuthBendix 3.180 2.857 11.32% 0+0 0+0 0.675 0.662 2.02%
941 :     lexgen 6.190 5.290 17.01% 0+0 0+0 0.913 0.788 15.86%
942 :     life 0.803 0.703 14.22% 25+25 0+0 0.153 0.140 9.52%
943 :     logic 2.048 2.007 2.08% 6+6 1+1 4.133 4.008 3.12%
944 :     mandelbrot 0.077 0.080 -4.17% 0+0 0+0 0.765 0.712 7.49%
945 :     mlyacc 22.932 20.937 9.53% 154+181 32+57 0.468 0.430 8.91%
946 :     nucleic 5.183 5.060 2.44% 2+2 0+0 0.125 0.120 4.17%
947 :     ratio-regions 3.357 3.142 6.84% 0+0 0+0 116.225 113.173 2.70%
948 :     ray 1.283 1.290 -0.52% 0+0 0+0 2.887 2.855 1.11%
949 :     simple 6.307 6.032 4.56% 28+30 5+7 3.705 3.658 1.28%
950 :     tsp 0.888 0.862 3.09% 0+0 0+0 7.040 6.893 2.13%
951 :     vliw 24.378 23.455 3.94% 106+127 25+45 2.758 2.707 1.91%
952 :     --------------------------------------------------------------------------
953 :     Average 6.12% 4.09%
954 :    
955 :     SPARC Compilation Time Spill+Reload Run Time
956 :     110.25 New 110.25 New 110.25 New
957 :    
958 :     barnesHut 3.778 3.592 5.20% 2+2 0+0 3.648 3.453 5.65%
959 :     boyer 6.632 6.110 8.54% 0+0 0+0 0.258 0.242 6.90%
960 :     count-graphs 1.435 1.325 8.30% 0+0 0+0 33.672 34.737 -3.07%
961 :     fft 0.980 0.940 4.26% 3+9 2+6 0.838 0.827 1.41%
962 :     knuthBendix 3.590 3.138 14.39% 0+0 0+0 0.962 0.967 -0.52%
963 :     lexgen 6.593 6.072 8.59% 1+1 0+0 1.077 1.078 -0.15%
964 :     life 0.972 0.868 11.90% 26+26 0+0 0.143 0.140 2.38%
965 :     logic 2.525 2.387 5.80% 7+7 1+1 5.625 5.158 9.05%
966 :     mandelbrot 0.090 0.093 -3.57% 0+0 0+0 0.855 0.728 17.39%
967 :     mlyacc 26.732 23.827 12.19% 162+189 32+57 0.550 0.560 -1.79%
968 :     nucleic 6.233 6.197 0.59% 3+3 0+0 0.163 0.173 -5.77%
969 :     ratio-regions 3.780 3.507 7.79% 0+0 0+0 133.993 131.035 2.26%
970 :     ray 1.595 1.550 2.90% 1+1 0+0 3.440 3.418 0.63%
971 :     simple 6.972 6.487 7.48% 29+32 5+7 3.523 3.525 -0.05%
972 :     tsp 1.115 1.063 4.86% 0+0 0+0 7.393 7.265 1.77%
973 :     vliw 27.765 24.818 11.87% 110+135 25+45 2.265 2.135 6.09%
974 :     ----------------------------------------------------------------------------
975 :     Average 6.94% 2.64%
976 :    
977 :     X86 Compilation Time Spill+Reload Run Time
978 :     110.25 New 110.25 New 110.25 New
979 :    
980 :     barnesHut 5.530 5.420 2.03% 593+893 597+915 3.532 3.440 2.66%
981 :     boyer 8.768 7.747 13.19% 493+199 301+289 0.327 0.297 10.11%
982 :     count-graphs 2.040 2.010 1.49% 298+394 315+457 26.578 28.660 -7.26%
983 :     fft 1.327 1.302 1.92% 112+209 115+210 1.055 0.962 9.71%
984 :     knuthBendix 5.218 5.475 -4.69% 451+598 510+650 0.928 0.932 -0.36%
985 :     lexgen 9.970 9.623 3.60% 1014+841 1157+885 0.947 0.928 1.97%
986 :     life 1.183 1.183 0.00% 162+182 145+148 0.127 0.103 22.58%
987 :     logic 3.285 3.512 -6.45% 514+684 591+836 5.682 5.577 1.88%
988 :     mandelbrot 0.147 0.143 2.33% 38+41 33+54 0.703 0.690 1.93%
989 :     mlyacc 35.457 32.763 8.22% 3496+4564 3611+4860 0.552 0.550 0.30%
990 :     nucleic 7.100 6.888 3.07% 239+168 201+158 0.175 0.173 0.96%
991 :     ratio-regions 6.388 6.843 -6.65% 1182+257 981+300 120.142 120.345 -0.17%
992 :     ray 2.332 2.338 -0.29% 346+398 402+494 3.593 3.540 1.51%
993 :     simple 9.912 9.903 0.08% 1475+941 1579+1168 3.057 3.178 -3.83%
994 :     tsp 1.623 1.532 5.98% 266+200 250+211 8.045 7.878 2.12%
995 :     vliw 33.947 35.470 -4.29% 2629+2774 2877+3171 2.072 1.890 9.61%
996 :     ----------------------------------------------------------------------------
997 :     Average 1.22% 3.36%
998 :    
999 :     ----------------------------------------------------------------------
1000 :     Name: Allen Leung
1001 : leunga 583 Date: 2000/03/23 16:25:00
1002 :     Tag: leunga-20000323-fix_x86_alpha
1003 :     Description:
1004 :    
1005 :     1. X86 fixes/changes
1006 :    
1007 :     a. The old code generated for SETcc was completely wrong.
1008 :     The Intel optimization guide is VERY misleading.
1009 :    
1010 :     2. ALPHA fixes/changes
1011 :    
1012 :     a. Added the instructions LDBU, LDWU, STB, STW as per Fermin's suggestion.
1013 :     b. Added a new mode byteWordLoadStores to the functor parameter to Alpha()
1014 :     c. Added reassociation code for address computation.
1015 :    
1016 :     ----------------------------------------------------------------------
1017 :     Name: Allen Leung
1018 : leunga 580 Date: 2000/03/22 01:23:00
1019 :     Tag: leunga-20000322-fix_x86_hppa_ra
1020 :     Description:
1021 :    
1022 :     1. X86 fixes/changes
1023 :    
1024 :     a. x86Rewrite bug with MUL3 (found by Lal)
1025 :     b. Added the instructions FSTS, FSTL
1026 :    
1027 :     2. PA-RISC fixes/changes
1028 :    
1029 :     a. B label should not be a delay slot candidate! Why did this work?
1030 :     b. ADDT(32, REG(32, r), LI n) now generates one instruction instead of two,
1031 :     as it should be.
1032 :     c. The assembly syntax for fstds and fstdd was wrong.
1033 :     d. Added the composite instruction COMICLR/LDO, which is the immediate
1034 :     operand variant of COMCLR/LDO.
1035 :    
1036 :     3. Generic MLRISC
1037 :    
1038 :     a. shuffle.sml rewritten to be slightly more efficient
1039 :     b. DIV bug in mltree-simplify fixed (found by Fermin)
1040 :    
1041 :     4. Register Allocator
1042 :    
1043 :     a. I now release the interference graph earlier during spilling.
1044 :     May improve memory usage.
1045 :    
1046 :     ----------------------------------------------------------------------
1047 : blume 577 Name: Matthias Blume
1048 : blume 578 Date: 2000/03/14 14:15:32
1049 :     Tag: blume_main_v110p26p1_2
1050 :     Description:
1051 :    
1052 :     1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
1053 :     additional argument called "template" which is an optional string that
1054 :     specifiel the layout of the tool command line. See the CM manual for
1055 :     explanation.
1056 :    
1057 :     2. A special-purpose tool can be "regisitered" by simply dropping the
1058 :     corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
1059 :     directory where the .cm file lives that uses this tool. (The
1060 :     behavior/misfeature until now was to look for the tool description
1061 :     files in the current working directory.) As before, tool description
1062 :     files could also be anchored -- in which case they can live anywhere
1063 :     they like. Following the recent e-mail discussion, this change should
1064 :     make it easier to have special-purpose tools that are shipped together
1065 :     with the sources of the program that uses them.
1066 :    
1067 :     ----------------------------------------------------------------------
1068 :     Name: Matthias Blume
1069 : blume 577 Date: 2000/03/10 07:48:34
1070 :     Tag: blume_main_v110p26p1_1
1071 :     Description:
1072 :    
1073 :     I added a re-written version of Dave's fixpt script to src/system.
1074 :     Changes relative to the original version:
1075 :     - sh-ified (not everybody has ksh)
1076 :     - automatically figures out which architecture it runs on
1077 :     - uses ./makeml a bit more cleverly
1078 :     - never invokes ./installml (and, thus, does not clobber your
1079 :     good and working installation of sml in case something goes wrong)
1080 :     - accepts max iteration count using option "-iter <n>"
1081 :     - accepts a "base" name using option "-base <base>"
1082 :    
1083 :     It does not build any extraneous heap images but directly rebuilds
1084 :     bin- and boot-hierarchies using makeml's "-rebuild" switch. Finally,
1085 :     it can incorporate existing bin- and boot- hierarchies. For example,
1086 :     suppose the base is set to "sml" (which is the default). Then it
1087 :     successively builds
1088 :    
1089 :     sml.bin.<arch>-unix and sml.boot.<arch>-unix
1090 :     then sml1.bin.<arch>-unix and sml1.boot.<arch>-unix
1091 :     then sml2.bin.<arch>-unix and sml2.boot.<arch>-unix
1092 :     ...
1093 :     then sml<n>.bin.<arch>-unix and sml<n>.boot.<arch>-unix
1094 :    
1095 :     and so on. If any of these already exist, it will just use what's
1096 :     there. In particular, many people will have the initial set of bin
1097 :     and boot files around, so this saves time for at least one full
1098 :     rebuild. Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
1099 :     <k>=1,2,... is normally not a good idea when invoking fixpt. However,
1100 :     they might be the result of an earlier partial run of fixpt (which
1101 :     perhaps got accidentially killed). In this case, fixpt will quickly
1102 :     move through what exists before continuing where it left off earlier,
1103 :     and, thus, saves a lot of time.
1104 :    
1105 :     ----------------------------------------------------------------------
1106 : leunga 576 Name: Allen Leung
1107 :     Date: 00/03/10 02:20:00
1108 :     Tag: leunga-20000310-fix_x86_asm_ra
1109 :     Description:
1110 : dbm 570
1111 : leunga 576 More assembly output problems involving the indexed addressing mode
1112 :     on the x86 have been found and corrected. Thanks to Fermin Reig for the
1113 :     fix.
1114 :    
1115 :     The interface and implementation of the register allocator have been changed
1116 :     slightly to accommodate the possibility to skip the register allocation
1117 :     phases completely and go directly to memory allocation. This is needed
1118 :     for C-- use.
1119 :    
1120 : dbm 570 ----------------------------------------------------------------------
1121 : blume 572 Name: Matthias Blume
1122 : blume 575 Date: 00/03/09 10:23:53
1123 :     Tag: blume_main_v110p26p1_0
1124 :     Description:
1125 :    
1126 :     * Complete re-organization of library names. Many libraries have been
1127 :     consolidated so that they share the same path anchor. For example,
1128 :     all MLRISC-related libraries are anchored at MLRISC, most libraries that
1129 :     are SML/NJ-specific are under "smlnj". Notice that names like
1130 :     host-cmb.cm or host-compiler.cm no longer exist. See system/README
1131 :     for a complete description of the new naming scheme. Quick reference:
1132 :    
1133 :     host-cmb.cm -> smlnj/cmb.cm
1134 :     host-compiler.cm -> smlnj/compiler.cm
1135 :     full-cm.cm -> smlnj/cm.cm
1136 :     <arch>-<os>.cm -> smlnj/cmb/<arch>-<os>.cm
1137 :     <arch>-compiler.cm -> smlnj/compiler/<arch>.cm
1138 :    
1139 :     * Bug fixes in CM.
1140 :     - exceptions in user code are being passed through (i.e., reach top level)
1141 :     - more bugs in paranoia mode fixed
1142 :     - bug related to checking group owners fixed
1143 :    
1144 :     * New install.sh script that automagically fetches archive files:
1145 :     The new file config/srcarchiveurl must contain the URL of the
1146 :     (remote) directory that contains bin files (or other source archives).
1147 :     If install.sh does not find the archive locally, it tries to get
1148 :     it from that remote directory.
1149 :     This should simplify installation further: For machines that have
1150 :     access to the internet, just fetch <version>-config.tgz, unpack it,
1151 :     edit config/targets, and go (run config/install.sh). The scipt will
1152 :     fetch everything else that it might need all by itself.
1153 :    
1154 :     For CVS users, this mechanism is not relevant for source archives, but
1155 :     it is convenient for getting new sets of binfiles.
1156 :    
1157 :     Archives should be tar files compressed with either gzip, compress, or
1158 :     bzip2. The script recognizes .tgz, .tar, tar.gz, tz, .tar.Z, and .tar.bz2.
1159 :    
1160 :     ----------------------------------------------------------------------
1161 :     Name: Matthias Blume
1162 : blume 572 Date: 2000/03/07 04:01:04
1163 :     Tag: blume_main_v110_26_2
1164 : dbm 570 Description:
1165 : blume 572 - size info in BOOTLIST
1166 :     * no fixed upper limits for number of bootfiles or length of
1167 :     bootfile names in runtime
1168 :     * falling back to old behavior if no BOOTLIST size info found
1169 :     - allocation size heuristics in .run-sml
1170 :     * tries to read cache size from /proc/cpuinfo (this is important for
1171 :     small-cache Celeron systems!)
1172 :     - install.sh robustified
1173 :     - CM manual updates
1174 :     - paranoid mode
1175 :     * no more CMB.deliver() (i.e., all done by CMB.make())
1176 :     * can re-use existing sml.boot.* files
1177 :     * init.cmi now treated as library
1178 :     * library stamps for consistency checks
1179 :     - sml.boot.<arch>-<os>/PIDMAP file
1180 :     * This file is read by the CM startup code. This is used to minimize
1181 :     the amount of dynamic state that needs to be stowed away for the
1182 :     purpose of sharing between interactive system and user code.
1183 :     - CM.Anchor.anchor instead of CM.Anchor.{set,cancel}
1184 :     * Upon request by Elsa. Anchors now controlled by get-set-pair
1185 :     like most other CM state variables.
1186 :     - Compiler.CMSA eliminated
1187 :     * No longer supported by CM anyway.
1188 :     - fixed bugs in pickler that kept biting Stefan
1189 :     * past refs to past refs (was caused by the possibility that
1190 :     ad-hoc sharing is more discriminating than hash-cons sharing)
1191 :     * integer overflow on LargeInt.minInt
1192 :     - ml-{lex,yacc} build scripts now use new mechanism
1193 :     for building standalone programs
1194 :     - fixed several gcc -Wall warnings that were caused by missing header
1195 :     files, missing initializations, etc., in runtime (not all warnings
1196 :     eliminated, though)

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