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

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