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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 : leunga 660 Name: Allen Leung
16 :     Date: 2000/06/15 00:38:00
17 :     Tag: leunga-20000615-x86-peephole
18 :    
19 :     x86 Peephole fix by Fermin. Affects c-- and moby only.
20 :    
21 :     ----------------------------------------------------------------------
22 : blume 658 Name: Matthias Blume
23 :     Date: 2000/06/12 11:40:00
24 :     Tag: blume-20000612-parmakefix
25 :     Description:
26 :    
27 :     More cleanup after changing the file naming scheme: This time I
28 :     repaired the parallel make mechanism for CMB.make which I broke earlier.
29 :    
30 :     ----------------------------------------------------------------------
31 : leunga 657 Name: Allen Leung
32 :     Date: 2000/06/09 01:25:00
33 :     Tag: leunga-20000609-various
34 :    
35 :     None of these things should affect normal SML/NJ operations
36 :    
37 :     1. Peephole improvements provided by Fermin (c--)
38 :     2. New annotation DEFUSE for adding extra dependence (moby)
39 :     3. New X86 LOCK instructions (moby)
40 :     4. New machine description language for reservation tables (scheduling)
41 :     5. Fixes to various optimization/analysis modules (branch chaining, dominator
42 :     trees etc.)
43 :     6. I've changed the CM files so that they can work with versions
44 :     110.0.6, 110.25 and 110.28
45 :    
46 :     ----------------------------------------------------------------------
47 : blume 652 Name: Matthias Blume
48 : blume 656 Date: 2000/06/09 12:40:00
49 :     Tag: blume-20000609-log
50 :     Description:
51 :    
52 :     - Removed all(?) remaining RCS Log entries from sources.
53 :    
54 :     - Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
55 :     anchored paths).
56 :    
57 :     ----------------------------------------------------------------------
58 :     Name: Matthias Blume
59 : blume 653 Date: 2000/06/07 17:00:00 JST
60 :     Tag: blume-20000607-no-implicit-anchors
61 :     Description:
62 :    
63 :     1. This update changes the default setting for
64 :     CM.Control.implicit_anchors from true to false. This means that
65 :     implicit anchors are no longer permitted by default. I also tried to
66 :     make sure that nothing else still relies on implicit anchors.
67 :     (This is the next step on the schedule towards a CM that does not even
68 :     have the notion of implicit anchors anymore.)
69 :    
70 :     2. More CM manual updates.
71 :    
72 :     3. I managed to track down and fix the pickling bug I mentioned last
73 :     time. Because of the previously existing workaround, this entails no
74 :     immediate practical changes.
75 :    
76 :     ----------------------------------------------------------------------
77 :     Name: Matthias Blume
78 : blume 652 Date: 2000/06/06 11:15:00 JST
79 :     Tag: blume-20000606-lazierpickle
80 :     Description:
81 :    
82 :     !!!! NEW BOOT FILES !!!!
83 :    
84 :     * The main purpose of this update is to make library pickles lazier in
85 :     order to reduce the initial space penalty for autoloading a library.
86 :     As a result, it is now possible to have $smlnj/compiler.cm
87 :     pre-registered. This should take care of the many complaints or
88 :     inquiries about missing structure Compiler. This required changes to
89 :     CM's internal data structures and small tweaks to some algorithms.
90 :    
91 :     As a neat additional effect, it is no longer necessary (for the sake
92 :     of lean heap image files) to distinguish between a "minimal" CM and a
93 :     "full" CM. Now, there is only one CM (i.e., the "full" version:
94 :     $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
95 :     interactive top level. ($smlnj/cm/minimal.cm is gone.)
96 :    
97 :     To make the life of compiler-hackers easier, "makeml" now also
98 :     pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm). In other
99 :     words, after you bootstrap a new sml for the first time, you will not
100 :     have to autoload $smlnj/cmb.cm again afterwards. (The first time
101 :     around you will still have to do it, though.)
102 :    
103 :     * A second change consists of major updates to the CM manual. There
104 :     are now several appendices with summary information and also a full
105 :     specification of the CM description file syntax.
106 :    
107 :     * In directory src/system I added the script "allcross". This script
108 :     invokes sml and cross-compiles the compiler for all supported
109 :     architectures. (Useful when providing a new set of boot files.)
110 :    
111 :     * There seems to be a latent bug in my "lazy pickles" mechanism. I
112 :     added a small tweak to pickle-util.sml to work around this problem,
113 :     but it is not a proper fix yet. I will investigate further. (The
114 :     effect of the bug was an inflation of library pickle size.)
115 :    
116 :     * Version number increased to 110.28.1 (to avoid compatibility problems).
117 :    
118 :     ----------------------------------------------------------------------
119 : leunga 646 Name: Allen Leung
120 : leunga 648 Date: 2000/05/25 17:28 EDT
121 :     Tag: leunga-20000525-ra
122 :     Description:
123 :    
124 :     Fixed a bug in freezing phase of the register allocator.
125 :    
126 :     ----------------------------------------------------------------------
127 :     Name: Allen Leung
128 : leunga 647 Date: 2000/05/15 22:53 EDT
129 : leunga 646 Tag: leunga-20000515-alpha-x86-ra
130 :     Description:
131 :    
132 :     1. Alpha
133 :    
134 :     Slight cleanup. Removed the instruction SGNXL
135 :    
136 :     2. X86
137 :    
138 :     Added the following instructions to the instruction set:
139 :    
140 :     ROLx, RORx,
141 :     BTx, BTSx, BTLx, BTRx,
142 :     XCHGx, and variants with the LOCK prefix
143 :    
144 :     3. Register Allocation
145 :    
146 :     The module ra-rewrite-with-renaming has been improved.
147 :    
148 : leunga 647 These have no effect on SML/NJ.
149 :    
150 : leunga 646 ----------------------------------------------------------------------
151 : blume 642 Name: Matthias Blume
152 : blume 645 Date: 2000/05/15 16:20:00 JST
153 :     Tag: blume-20000515-lightrebuild
154 :     Description:
155 :    
156 :     1. I added an alternative to "-rebuild" to "makeml". The difference is
157 :     that prior to calling CMB.make' the CM-variable "LIGHT" will be
158 :     defined. In effect, the command will not build any cross-compiler
159 :     backends and therefore finish more quickly.
160 :    
161 :     The "fixpt" script also takes a "-light" switch to be able to use
162 :     this new facility while compiling for a fixpoint.
163 :    
164 :     2. I replaced all mentions of anchored paths in group owner specifications
165 :     with simple relative paths (usually starting with "..").
166 :     The rationale is that a library's internal workings should not be
167 :     compromised by the lack of some anchor. (An anchor is necessary
168 :     for someone who wants to refer to the library by an anchored path,
169 :     but it should not be necessary to build the same library in the first
170 :     place.)
171 :    
172 :     3. I changed the way CM's tool mechanism determines the shell command
173 :     string used for things like ml-yacc etc. so that it does not break
174 :     when CM.Control.implicit_anchors is turned off.
175 :    
176 :     ----------------------------------------------------------------------
177 :     Name: Matthias Blume
178 : blume 644 Date: 2000/05/12 18:20:00 JST
179 :     Tag: blume-20000512-ml-build
180 :     Description:
181 :    
182 :     Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
183 :     getting installed properly (by config/install.sh).
184 :    
185 :     ----------------------------------------------------------------------
186 :     Name: Matthias Blume
187 : blume 643 Date: 2000/05/12 17:30:00 JST
188 :     Tag: blume-20000512-anchors
189 :     Description:
190 :    
191 :     !!! NEW BOOT FILES !!!
192 :    
193 :     This change is in preparation of fading out support for "implicitly
194 :     anchored path names". I went through all sources and used the
195 :     explicit (and relatively new) $-notation. See system/README and the
196 :     CM manual for more info on this.
197 :    
198 :     I also modified the anchoring scheme for some things such as "smlnj",
199 :     "MLRISC", "cm", etc. to take advantage of the fact that explicit
200 :     anchors are more expressive: anchor name and first arc do not have to
201 :     coincide. This entails the following user-visible change:
202 :    
203 :     You have to write $smlnj/foo/bar instead of smlnj/foo/bar. In
204 :     particular, when you fire up sml with a command-line argument, say,
205 :     e.g.:
206 :    
207 :     sml '$smlnj/cmb.cm'
208 :    
209 :     At the ML toplevel prompt:
210 :    
211 :     CM.autoload "$smlnj/cmb.cm";
212 :    
213 :     There is also a new controller in CM.Control that can be used to turn
214 :     off all remaining support for implicit anchors by saying:
215 :    
216 :     CM.autoload "$smlnj/
217 :     #set CM.Control.implicit_anchors false;
218 :    
219 :     This causes CM to reject implicitly anchored paths. This is (for the
220 :     time being) less permissive than the "final" version where there will
221 :     be no more such implicit anchors and relative paths will be just that:
222 :     relative.
223 :    
224 :     The next step (version after next version?) will be to make the
225 :     default for CM.Control.implicit_anchors false. After the dust has
226 :     settled, I can then produce the "final" version of this...
227 :    
228 :     Note: Since bootstrapping is a bit tricky, I provided new boot files.
229 :    
230 :     ----------------------------------------------------------------------
231 :     Name: Matthias Blume
232 : blume 642 Date: 2000/05/11 16:30:00 JST
233 :     Tag: blume-20000511-sources
234 :     Description:
235 :    
236 :     The main change is that I added function CM.sources as a generalized
237 :     version of the earlier CM.makedepend. This entails the following
238 :     additional changes:
239 :    
240 :     - CM.makedepend has been dropped.
241 :    
242 :     - CM manual has been updated.
243 :    
244 :     - TOOLS signature and API have been changed.
245 :    
246 :     ----------------------------------------------------------------------
247 : leunga 640 Name: Allen Leung
248 : leunga 641 Date: 2000/05/10 21:17 EDT
249 :     Tag: leunga-20000510-moby-c--ssa
250 :     Description:
251 :    
252 :     Various bug fixes and new features for C--, Moby and MLRISC optimizations.
253 :     None of these affect SML/NJ.
254 :    
255 :     1. Register Allocation
256 :    
257 :     a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
258 :     This module tries to remove local (i.e. basic block level) redundancies
259 :     during spilling.
260 :    
261 :     b. A new framework for performing region based register allocation.
262 :     Not yet entirely functional.
263 :    
264 :     2. X86
265 :    
266 :     a. DefUse for POP was missing the stack pointer [found by Lal]
267 :     b. Reload for CALL was incorrect in X86Spill [found by John]
268 :     c. Various fixes in X86Spill so that it can be used correctly for
269 :     the new spilling module.
270 :    
271 :     3. SSA/IR
272 :    
273 :     a. New module ir/dj-dataflow.sml implements elimination based
274 :     data flow analysis.
275 :    
276 :     4. MLRiscGen
277 :    
278 :     a. Fix for gc type annotation
279 :    
280 :     5. MDGen
281 :    
282 :     Various fixes for machine description -> ml code translation. For ssa
283 :     only.
284 :    
285 :     ----------------------------------------------------------------------
286 :     Name: Allen Leung
287 : leunga 640 Date: 2000/05/08 22:17 EDT
288 :     Tag: leunga-20000508-labexp
289 :     Description:
290 :    
291 :     Fermin has found a few assembly problems with constant expressions
292 :     generated in LabelExp. Mostly, the problems involve extra parentheses,
293 :     which choke on dumb assemblers. This is his fix.
294 :    
295 :     ----------------------------------------------------------------------
296 : dbm 635 Name: Dave MacQueen
297 :     Date: 2000/04/09 14:00 EDT
298 :     Tag: dbm-20000502-Version_110_28
299 :     Description:
300 :    
301 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
302 :    
303 :     2. Updated config/version to 110.28
304 :    
305 :     3. Updated config/srcarchiveurl
306 :    
307 :     3. New boot files!
308 :     ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
309 :    
310 :     ----------------------------------------------------------------------
311 : blume 634 Name: Matthias Blume
312 :     Date: 2000/05/01 19:05:00 JST
313 :     Tag: blume-20000501-noweb
314 :     Description:
315 :    
316 :     A new noweb tool has been added. The existing system is entirely
317 :     unaffected by this, but some CM users have asked for renewed noweb
318 :     support. Everything is documented in the CM manual.
319 :    
320 :     New (plugin) libraries:
321 :    
322 :     noweb-tool.cm
323 :     nw-ext.cm
324 :    
325 :     ----------------------------------------------------------------------
326 : dbm 633 Name: Dave MacQueen
327 :     Date: 2000/04/30 12:40PM EDT
328 :     Tag: dbm-20000430-bug_fixes
329 :     Description:
330 :    
331 :     1. Fix for bug 1498
332 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sig
333 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sml
334 :     added toRealArray function
335 :     smlnj/src/compiler/MiscUtil/print/ppobj.sml
336 :     added check for tag Obj.RealArray to array printing case in ppObj
337 :    
338 :     2. Fix for bug 1510
339 :     smlnj/src/compiler/Semant/types/typesutil.sml
340 :     fixed definition of dummyargs (used by equalTycon) so that
341 :     dummy args are distinct types
342 :    
343 :     ----------------------------------------------------------------------
344 : blume 629 Name: Matthias Blume
345 : blume 632 Date: 2000/04/30 01:00:00 JST
346 :     Tag: blume-20000430-versions
347 :     Description:
348 :    
349 :     1. CM version numbering added. This is an implementation of Lal's
350 :     proposal for adding version numbers and version checking to .cm
351 :     files. Lal said that his proposal was just that -- a proposal.
352 :     For the time being I went ahead and implemented it so that people
353 :     can comment on it. Everything is completely backward-compatible
354 :     (except for the stable library format, i.e., new bootfiles!).
355 :    
356 :     As usual, see the CM manual for details.
357 :    
358 :     2. An alternative syntax for anchored paths has been implemented.
359 :     Dave has recently voiced the same concerns that I had when I did
360 :     this, so there should be some support. My take is that eventually
361 :     I will let support for the current syntax (where anchors are
362 :     "implicit") fade out in favor of the new, explicit syntax.
363 :     In order to be backward-compatible, both old and new syntax are
364 :     currently supported.
365 :    
366 :     Again, see the CM manual for details.
367 :    
368 :     3. Parallel make is trying to be slightly smarter: When the master
369 :     process finds a "bottleneck", i.e., when there is only one
370 :     compilation unit that can be compiled and everybody else is
371 :     waiting on it, then it will simply compile it directly instead
372 :     of clumsily telling one of the slaves to do it.
373 :    
374 :     4. Support for "unsharing" added. This is necessary in order to be
375 :     able to have two different versions of the same library running
376 :     at the same time (e.g., for trying out a new MLRISC while still
377 :     having the old MLRISC linked into the current compiler, etc.)
378 :     See the CM manual.
379 :    
380 :     5. Simple "makedepend" functionality added for generating Makefile
381 :     dependency information. (This is rather crude at the moment.
382 :     Expect some changes here in the future.)
383 :    
384 :     6. ".fun" added as a recognized suffix for ML files. Also documented
385 :     explicitly in the manual that the fallback behavior (unknown suffix
386 :     -> ML file) is not an official feature!
387 :    
388 :     7. Small changes to the pickler for stable libraries.
389 :    
390 :     8. Several internal changes to CM (for cleanup/improvement).
391 :    
392 :    
393 :     !!!! NEW BINFILES !!!!
394 :    
395 :     ----------------------------------------------------------------------
396 :     Name: Matthias Blume
397 : blume 631 Date: 2000/04/28 17:30:00 JST
398 :     Tag: blume-20000428-pathconfig
399 :     Description:
400 :    
401 :     1. I changed config/install.sh to remove duplicate entries from the
402 :     lib/pathconfig file at the end. Moreover, the final version of
403 :     lib/pathconfig is sorted alphabetically. The same (sorting) is done
404 :     in src/system/installml.
405 :    
406 :     2. The config/install.sh script now consistently uses relative
407 :     pathnames in lib/pathconfig whenever the anchor is in the lib
408 :     directory. (So far this was true for the libraries that come
409 :     pre-compiled and bundled as part of the bootfiles but not for
410 :     libraries that are compiled by the script itself.)
411 :    
412 :     ----------------------------------------------------------------------
413 :     Name: Matthias Blume
414 : blume 629 Date: 2000/04/26 13:10:00 JST
415 :     Tag: blume-20000426-fun_suffix
416 :     Description:
417 :    
418 :     Added ".fun" as a recognized file name suffix (for ML code).
419 :    
420 :     ----------------------------------------------------------------------
421 : leunga 628 Name: Allen Leung
422 :     Date: 2000/04/25 17:00:00 EST
423 :     Tag: leunga-20000425-alpha-ra
424 :     Description:
425 :    
426 :     1. Alpha
427 :    
428 :     PSEUDOARITH was missing in AlphaRewrite. This causes an endless loop
429 :     in C--.
430 :    
431 :     2. RA
432 :    
433 :     Added a flag "ra-dump-size" to print out the size of the flowgraph
434 :     and the interference graph.
435 :    
436 :     ----------------------------------------------------------------------
437 : dbm 627 Name: Dave MacQueen
438 :     Date: 2000/04/25/
439 :     Tag: dbm-20000425-mlyacc_doc_examples
440 :     Description:
441 :     Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
442 :     Updated all three examples in src/ml-yacc/examples to run
443 :     under 110.* using CM.make.
444 :    
445 :     ----------------------------------------------------------------------
446 : leunga 624 Name: Allen Leung
447 :     Date: 2000/04/20 23:04:00 EST
448 :     Tag: leunga-20000420-ssa-c---stuff
449 :     Description:
450 :    
451 :     This update synchronizes my repository with Yale's. Most of these
452 :     changes, however, do not affect SML/NJ at all (the RA is an exception).
453 :    
454 :     1. Register Allocator
455 :    
456 :     a. An improvement in the interference graph construction:
457 :     Given a copy
458 :    
459 :     s <- t
460 :    
461 : leunga 628 no interference edge between s and t is added for this definition of s.
462 : leunga 624
463 :     b. I've added two new spill heuristic modules that Fermin and I developed
464 :     (in the new library RA.cm). These are unused in SML/NJ but maybe
465 :     useful for others (Moby?)
466 :    
467 :     2. X86
468 :    
469 :     a. Various fixes in the backend provided by Fermin [C--] and Lal.
470 :    
471 :     3. Alpha
472 :    
473 :     a. Added the BSR instruction and code generation that goes with it [C--]
474 :     b. Other fixes too numerous to recount provided by Fermin [C--]
475 :    
476 :     4. Regmaps
477 :    
478 :     a. The regmaps are not initialized with the identity physical bindings
479 :     at creation time. This is unneeded.
480 :    
481 :     5. MLRISC Optimizations
482 :    
483 :     a. The DJ-Graph module can now compute the iterated dominance frontiers
484 :     intersects with liveness incrementally in linear time! Woohoo!
485 :     This is now used in my new SSA construction algorithm.
486 :    
487 :     b. THe branch reorganization module is now smarter about linear chains of
488 :     basic blocks.
489 :    
490 :    
491 :     ----------------------------------------------------------------------
492 : blume 615 Name: Matthias Blume
493 :     Date: 2000/04/12 13:52:00 JST
494 :     Tag: blume_main_v110p27_1
495 :     Description:
496 :    
497 :     Changed install.sh script to handle archive files without version number
498 :     and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
499 :     name of the boot file archive.
500 :    
501 :     ----------------------------------------------------------------------
502 : dbm 607 Name: Dave MacQueen
503 :     Date: 2000/04/09 14:00 EDT
504 :     Tag: dbm-20000410-Version_110_27
505 :     Description:
506 :    
507 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
508 :    
509 :     2. Updated src/config/version to 110.27
510 :    
511 :     3. New boot files!
512 :    
513 :     ----------------------------------------------------------------------
514 : leunga 606 Name: Allen Leung
515 :     Date: 2000/04/09 19:09:00 EST
516 :     Tag: leunga-20000409-misc
517 :     Description:
518 :    
519 :     1. Yet another fix for x86 assembly for idivl, imull, mull and friends.
520 :    
521 :     2. Miscellaneous improvements to MLRISC (unused in sml/nj)
522 :    
523 :     ----------------------------------------------------------------------
524 : monnier 605 Name: Stefan
525 :     Date: 2000/04/07 10:00:00 EDT
526 :     Tag: monnier-20000406-branch-handling
527 :     Description:
528 :    
529 :     Improved handling of branches (mostly those generated from
530 :     polymorphic equality), removed switchoff and changed the
531 :     default optimization settings (more cpsopt and less flintopt).
532 :    
533 :     ----------------------------------------------------------------------
534 : leunga 601 Name: Allen Leung
535 : leunga 602 Date: 2000/04/06 01:30:00 EST
536 :     Tag: leunga-20000406-peephole-x86-SSA-2
537 :     Description:
538 :    
539 :     Forgot a few files.
540 :    
541 :     ----------------------------------------------------------------------
542 :     Name: Allen Leung
543 : leunga 601 Date: 2000/04/06 00:36:00 EST
544 :     Tag: leunga-20000406-peephole-x86-SSA
545 :     Description:
546 :    
547 :     1. New Peephole code
548 :    
549 :     2. Minor improvement to X86 instruction selection
550 :    
551 :     3. Various fixes to SSA and machine description -> code translator
552 :    
553 :     ----------------------------------------------------------------------
554 : blume 595 Name: Matthias Blume
555 :     Date: 2000/04/05 12:30:00 JST
556 :     Tag: blume_main_v110p26p2_3
557 :     Description:
558 :    
559 :     This update just merges three minor cosmetic updates to CM's sources
560 :     to get ready for the 110.27 code freeze on Friday. No functionality
561 :     has changed.
562 :    
563 :     ----------------------------------------------------------------------
564 : leunga 593 Name: Allen Leung
565 : leunga 594 Date: 2000/04/04 19:39:00 EST
566 :     Tag: leunga-20000404-x86-asm
567 :     Description:
568 :    
569 :     1. Fixed a problem in X86 assembly.
570 :    
571 :     Things like
572 :    
573 :     jmp %eax
574 :     jmp (%eax)
575 :    
576 :     should be output as
577 :    
578 :     jmp *%eax
579 :     jmp *(%eax)
580 :    
581 :     2. Assembly output
582 :    
583 :     Added a new flag
584 :    
585 :     "asm-indent-copies" (default to false)
586 :    
587 :     When this flag is on, parallel copies will be indented an extra level.
588 :    
589 :     ----------------------------------------------------------------------
590 :     Name: Allen Leung
591 : leunga 593 Date: 2000/04/04 03:18:00 EST
592 :     Tag: leunga-20000404-C--Moby
593 :     Description:
594 :    
595 :     All of these fixes are related to C--, Moby, and my own optimization
596 :     stuff; so they shouldn't affect SML/NJ.
597 :    
598 :     1. X86
599 :    
600 :     Various fixes related floating point, and extensions.
601 :    
602 :     2. Alpha
603 :    
604 :     Some extra patterns related to loads with signed/zero extension
605 :     provided by Fermin.
606 :    
607 :     3. Assembly
608 :    
609 : monnier 659 When generating assembly, resolve the value of client defined constants,
610 : leunga 593 instead of generating symbolic values. This is controlled by the
611 :     new flag "asm-resolve-constants", which is default to true.
612 :    
613 :     4. Machine Descriptions
614 :    
615 :     a. The precedence parser was slightly broken when parsing infixr symbols.
616 :     b. The type generalizing code had the bound variables reversed, resulting
617 :     in a problem during arity raising.
618 :     c. Various fixes in machine descriptions.
619 :    
620 :     ----------------------------------------------------------------------
621 : blume 592 Name: Matthias Blume
622 :     Date: 2000/04/03 16:05:00 JST
623 :     Tag: blume_main_v110p26p2_2
624 :     Description:
625 :    
626 :     I eliminated coreEnv from compInfo. Access to the "Core" structure is
627 :     now done via the ordinary static environment that is context to each
628 :     compilation unit.
629 :    
630 :     To this end, I arranged that instead of "structure Core" as "structure
631 :     _Core" is bound in the pervasive environment. Core access is done via
632 : monnier 659 _Core (which can never be accidentally rebound because _Core is not a
633 : blume 592 legal surface-syntax symbol).
634 :    
635 :     The current solution is much cleaner because the core environment is
636 :     now simply part of the pervasive environment which is part of every
637 :     compilation unit's context anyway. In particular, this eliminates all
638 :     special-case handling that was necessary until now in order to deal
639 :     with dynamic and symbolic parts of the core environment.
640 :    
641 :     Remaining hackery (to bind the "magic" symbol _Core) is localized in the
642 : monnier 659 compilation manager's bootstrap compiler (actually: in the "init group"
643 : blume 592 handling). See the comments in src/system/smlnj/init/init.cmi for
644 :     more details.
645 :    
646 :     I also tried to track down all mentions of "Core" (as string argument
647 :     to Symbol.strSymbol) in the compiler and replaced them with a
648 :     reference to the new CoreSym.coreSym. Seems cleaner since the actual
649 :     name appears in one place only.
650 :    
651 :     Binfile and bootfile format have not changed, but the switchover from
652 :     the old "init.cmi" to the new one is a bit tricky, so I supplied new
653 :     bootfiles anyway.
654 :    
655 :     ----------------------------------------------------------------------
656 : leunga 591 Name: Allen Leung
657 :     Date: 2000/04/02 21:17:00 EST
658 :     Tag: leunga-20000402-mltree
659 :     Description:
660 : leunga 585
661 : leunga 591 1. Renamed the constructor CALL in MLTREE by popular demand.
662 :     2. Added a bunch of files from my repository. These are currently
663 :     used by other non-SMLNJ backends.
664 :    
665 : leunga 576 ----------------------------------------------------------------------
666 : leunga 590 Name: Allen Leung
667 :     Date: 2000/03/31 21:15:00 EST
668 :     Tag: leunga-20000331-aliasing
669 :     Description:
670 :    
671 :     This update contains a rewritten (and hopefully more correct) module
672 :     for extracting aliasing information from CPS.
673 :    
674 :     To turn on this feature:
675 :    
676 :     Compiler.Control.CG.memDisambiguate := true
677 :    
678 :     To pretty print the region information with assembly
679 :    
680 :     Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
681 :    
682 :     To control how many levels of aliasing information are printed, use:
683 :    
684 :     Compiler.Control.MLRISC.getInt "points-to-show-level" := n
685 :    
686 :     The default of n is 3.
687 :    
688 :     ----------------------------------------------------------------------
689 : dbm 589 Name: David MacQueen
690 :     Date: 2000/03/31 11:15:00 EST
691 :     Tag: dbm-20000331-runtime_fix
692 :     Description:
693 :    
694 :     This update contains:
695 :    
696 :     1. runtime/c-lib/c-libraries.c
697 :     includes added in revision 1.2 caused compilation errors on hppa-hpux
698 :    
699 :     2. fix for bug 1556
700 :     system/Basis/Implementation/NJ/internal-signals.sml
701 :    
702 :     ----------------------------------------------------------------------
703 : blume 587 Name: Matthias Blume
704 : blume 588 Date: 2000/03/31 18:00:00 JST
705 :     Tag: blume_main_v110p26p2_1
706 :     Description:
707 :    
708 :     This update contains:
709 :    
710 :     1. A small change to CM's handling of stable libraries:
711 :     CM now maintains one "global" modmap that is used for all stable
712 :     libraries. The use of such a global modmap maximizes sharing and
713 :     minimizes the need for re-traversing parts of environments during
714 :     modmap construction. (However, this has minor impact since modmap
715 :     construction seems to account for just one percent or less of total
716 :     compile time.)
717 :    
718 :     2. I added a "genmap" phase to the statistics. This is where I got the
719 :     "one percent" number (see above).
720 :    
721 :     3. CM's new tool parameter mechanism just became _even_ better. :)
722 :     - The parser understands named parameters and recursive options.
723 :     - The "make" and "shell" tools use these new features.
724 :     (This makes it a lot easier to cascade these tools.)
725 :     - There is a small syntax change: named parameters use a
726 :    
727 :     <name> : ( <option> ... ) or
728 :     <name> : <string>
729 :    
730 :     syntax. Previously, named parameters were implemented in an
731 :     ad-hoc fashion by each tool individually (by parsing strings)
732 :     and had the form
733 :    
734 :     <name>=<string>
735 :    
736 :     See the CM manual for a full description of these issues.
737 :    
738 :     ----------------------------------------------------------------------
739 :     Name: Matthias Blume
740 : blume 587 Date: 2000/03/30 18:00:00 JST
741 :     Tag: blume_main_v110p26p2_0
742 :     Description:
743 :    
744 :     !!!!! WARNING !!!!!!
745 :     !! New binfiles !!
746 :     !!!!!!!!!!!!!!!!!!!!
747 :    
748 :     This update contains:
749 :    
750 :     1. Moderate changes to CM:
751 :    
752 :     - Changes to CM's tools mechanism. In particular, it is now possible
753 :     to have tools that accept additional "command line" parameters
754 :     (specified in the .cm file at each instance where the tool's class is
755 :     used).
756 :    
757 : monnier 659 This was done to accommodate the new "make" and "shell" tools which
758 :     facilitate fairly seamless hookup to portions of code managed using
759 : blume 587 Makefiles or Shell scripts.
760 :    
761 :     There are no classes "shared" or "private" anymore. Instead, the
762 :     sharing annotation is now a parameter to the "sml" class.
763 :    
764 :     There is a bit of generic machinery for implementing one's own
765 :     tools that accept command-line parameters. However, I am not yet fully
766 :     satisfied with that part, so expect changes here in the future.
767 :    
768 :     All existing tools are described in the CM manual.
769 :    
770 : monnier 659 - Slightly better error handling. (CM now suppresses many followup
771 : blume 587 error messages that tended to be more annoying than helpful.)
772 :    
773 :     2. Major changes to the compiler's static environment data structures.
774 :    
775 :     - no CMStaticEnv anymore.
776 :     - no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
777 :     but it is called Environment), no conversions between different
778 :     kinds of static environments
779 :    
780 :     - There is still a notion of a "modmap", but such modmaps are generated
781 :     on demand at the time when they are needed. This sounds slow, but I
782 :     sped up the code that generates modmaps enough for this not to lead to
783 :     a slowdown of the compiler (at least I didn't detect any).
784 :    
785 :     - To facilitate rapid modmap generation, static environments now
786 :     contain an (optional) "modtree" structure. Modtree annotations are
787 :     constructed by the unpickler during unpickling. (This means that
788 :     the elaborator does not have to worry about modtrees at all.)
789 :     Modtrees have the advantage that they are compositional in the same
790 :     way as the environment data structure itself is compositional.
791 :     As a result, modtrees never hang on to parts of an environment that
792 :     has already been rendered "stale" by filtering or rebinding.
793 :    
794 :     - I went through many, many trials and errors before arriving at the
795 :     current solution. (The initial idea of "linkpaths" did not work.)
796 :     But the result of all this is that I have touched a lot of files that
797 :     depend on the "modules" and "types" data structures (most of the
798 :     elaborator). There were a lot of changes during my "linkpath" trials
799 :     that could have been reverted to their original state but weren't.
800 :     Please, don't be too harsh on me for messing with this code a bit more
801 :     than what was strictly necessary... (I _did_ resist the tempation
802 :     of doing any "global reformatting" to avoid an untimely death at
803 :     Dave's hands. :)
804 :    
805 :     - One positive aspect of the previous point: At least I made sure that
806 :     all files that I touched now compile without warnings (other than
807 :     "polyEqual").
808 :    
809 :     - compiler now tends to run "leaner" (i.e., ties up less memory in
810 :     redundant modmaps)
811 :    
812 :     ----------------------------------------------------------------------
813 : leunga 580 Name: Allen Leung
814 : leunga 585 Date: 2000/03/29 18:00:00
815 :     Tag: leunga-20000327-mlriscGen_hppa_alpha_x86
816 : leunga 586 Boot files (optional): ftp://react-ilp.cs.nyu.edu/leunga/110.26.1-sml.boot.x86-unix-20000330.tar.gz
817 : leunga 585 Description:
818 :    
819 :     This update contains *MAJOR* changes to the way code is generated from CPS
820 :     in the module mlriscGen, and in various backend modules.
821 :    
822 :     CHANGES
823 :     =======
824 :    
825 :     1. MLRiscGen: forward propagation fix.
826 :    
827 :     There was a bug in forward propagation introduced at about the same time
828 :     as the MLRISC x86 backend, which prohibits coalescing to be
829 :     performed effectively in loops.
830 :    
831 :     Effect: speed up of loops in RISC architectures.
832 :     By itself, this actually slowed down certain benchmarks on the x86.
833 :    
834 :     2. MLRiscGen: forward propagating addresses from consing.
835 :    
836 :     I've changed the way consing code is generated. Basically I separated
837 :     out the initialization part:
838 :    
839 :     store tag, offset(allocptr)
840 :     store elem1, offset+4(allocptr)
841 :     store elem2, offset+8(allocptr)
842 :     ...
843 :     store elemn, offset+4n(allocptr)
844 :    
845 :     and the address computation part:
846 :    
847 :     celladdr <- offset+4+alloctpr
848 :    
849 :     and move the address computation part
850 :    
851 :     Effect: register pressure is generally lower as a result. This
852 :     makes compilation of certain expressions much faster, such as
853 :     long lists with non-trivial elements.
854 :    
855 :     [(0,0), (0,0), .... (0,0)]
856 :    
857 :     3. MLRiscGen: base pointer elimination.
858 :    
859 :     As part of the linkage mechanism, we generate the sequence:
860 :    
861 :     L: ... <- start of the code fragment
862 :    
863 :     L1:
864 :     base pointer <- linkreg - L1 + L
865 :    
866 :     The base pointer was then used for computing relocatable addresses
867 :     in the code fragment. Frequently (such as in lots of continuations)
868 :     this is not needed. We now eliminate this sequence whenever possible.
869 :    
870 :     For compile time efficiency, I'm using a very stupid local heuristic.
871 :     But in general, this should be done as a control flow analysis.
872 :    
873 :     Effect: Smaller code size. Speed up of most programs.
874 :    
875 :     4. Hppa back end
876 :    
877 :     Long jumps in span dependence resolution used to depend on the existence
878 :     of the base pointer.
879 :    
880 :     A jump to a long label L was expanded into the following sequence:
881 :    
882 :     LDIL %hi(L-8192), %r29
883 :     LDO %lo(L-8192)(%r29), %r29
884 :     ADD %r29, baseptr, %r29
885 :     BV,n %r0(%r29)
886 :    
887 :     In the presence of change (3) above, this will not work. I've changed
888 :     it so that the following sequence of instructions are generated, which
889 :     doesn't mention the base pointer at all:
890 :    
891 :     BL,n L', %r29 /* branch and link, L' + 4 -> %r29 */
892 :     L': ADDIL L-(L'+4), %r29 /* Compute address of L */
893 :     BV,n %r0(%r29) /* Jump */
894 :    
895 :     5. Alpha back end
896 :    
897 :     New alpha instructions LDB/LDW have been added, as per Fermin's
898 :     suggestions. This is unrelated to all other changes.
899 :    
900 :     6. X86 back end
901 :    
902 :     I've changed andl to testl in the floating point test sequence
903 :     whenever appropriate. The Intel optimization guide states that
904 : monnier 659 testl is preferable to andl.
905 : leunga 585
906 :     7. RA (x86 only)
907 :    
908 :     I've improved the spill propagation algorithm, using an approximation
909 :     of maximal weighted independent sets. This seems to be necessary to
910 :     alleviate the negative effect in light of the slow down in (1).
911 :    
912 :     I'll write down the algorithm one of these days.
913 :    
914 :     8. MLRiscGen: frequencies
915 :    
916 :     I've added an annotation that states that all call gc blocks have zero
917 :     execution frequencies. This improves register allocation on the x86.
918 :    
919 :     BENCHMARKS
920 :     ==========
921 :    
922 :     I've only perform the comparison on 110.25.
923 :    
924 :     The platforms are:
925 :    
926 :     HPPA A four processor HP machine (E9000) with 5G of memory.
927 :     X86 A 300Hhz Pentium II with 128M of memory, and
928 :     SPARC An Ultra sparc 2 with 512M of memory.
929 :    
930 :     I used the following parameters for the SML benchmarks:
931 :    
932 :     @SMLalloc
933 :     HPPA 256k
934 :     SPARC 512k
935 :     X86 256k
936 :    
937 :     COMPILATION TIME
938 :     ----------------
939 :     Here are the numbers comparing the compilation times of the compilers.
940 :     I've only compared 110.25 compiling the new sources versus
941 :     a fixpoint version of the new compiler compiling the same.
942 :    
943 :     110.25 New
944 :     Total Time in RA Spill+Reload Total Time In RA Spill+Reload
945 :     HPPA 627s 116s 2684+3584 599s 95s 1003+1879
946 :     SPARC 892s 173s 2891+3870 708s 116s 1004+1880
947 :     X86 999s 315s 94006+130691 987s 296s 108877+141957
948 :    
949 :     110.25 New
950 :     Code Size Code Size
951 :     HPPA 8596736 8561421
952 :     SPARC 8974299 8785143
953 :     X86 9029180 8716783
954 :    
955 :     So in summary, things are at least as good as before. Dramatic
956 :     reduction in compilation is obtained on the Sparc; I can't explain it,
957 :     but it is reproducible. Perhaps someone should try to reproduce this
958 :     on their own machines.
959 :    
960 :     SML BENCHMARKS
961 :     --------------
962 :    
963 :     On the average, all benchmarks perform at least as well as before.
964 :    
965 :     HPPA Compilation Time Spill+Reload Run Time
966 :     110.25 New 110.25 New 110.25 New
967 :    
968 :     barnesHut 3.158 3.015 4.75% 1+1 0+0 2.980 2.922 2.00%
969 :     boyer 6.152 5.708 7.77% 0+0 0+0 0.218 0.213 2.34%
970 :     count-graphs 1.168 1.120 4.32% 0+0 0+0 22.705 23.073 -1.60%
971 :     fft 0.877 0.792 10.74% 1+3 1+3 0.602 0.587 2.56%
972 :     knuthBendix 3.180 2.857 11.32% 0+0 0+0 0.675 0.662 2.02%
973 :     lexgen 6.190 5.290 17.01% 0+0 0+0 0.913 0.788 15.86%
974 :     life 0.803 0.703 14.22% 25+25 0+0 0.153 0.140 9.52%
975 :     logic 2.048 2.007 2.08% 6+6 1+1 4.133 4.008 3.12%
976 :     mandelbrot 0.077 0.080 -4.17% 0+0 0+0 0.765 0.712 7.49%
977 :     mlyacc 22.932 20.937 9.53% 154+181 32+57 0.468 0.430 8.91%
978 :     nucleic 5.183 5.060 2.44% 2+2 0+0 0.125 0.120 4.17%
979 :     ratio-regions 3.357 3.142 6.84% 0+0 0+0 116.225 113.173 2.70%
980 :     ray 1.283 1.290 -0.52% 0+0 0+0 2.887 2.855 1.11%
981 :     simple 6.307 6.032 4.56% 28+30 5+7 3.705 3.658 1.28%
982 :     tsp 0.888 0.862 3.09% 0+0 0+0 7.040 6.893 2.13%
983 :     vliw 24.378 23.455 3.94% 106+127 25+45 2.758 2.707 1.91%
984 :     --------------------------------------------------------------------------
985 :     Average 6.12% 4.09%
986 :    
987 :     SPARC Compilation Time Spill+Reload Run Time
988 :     110.25 New 110.25 New 110.25 New
989 :    
990 :     barnesHut 3.778 3.592 5.20% 2+2 0+0 3.648 3.453 5.65%
991 :     boyer 6.632 6.110 8.54% 0+0 0+0 0.258 0.242 6.90%
992 :     count-graphs 1.435 1.325 8.30% 0+0 0+0 33.672 34.737 -3.07%
993 :     fft 0.980 0.940 4.26% 3+9 2+6 0.838 0.827 1.41%
994 :     knuthBendix 3.590 3.138 14.39% 0+0 0+0 0.962 0.967 -0.52%
995 :     lexgen 6.593 6.072 8.59% 1+1 0+0 1.077 1.078 -0.15%
996 :     life 0.972 0.868 11.90% 26+26 0+0 0.143 0.140 2.38%
997 :     logic 2.525 2.387 5.80% 7+7 1+1 5.625 5.158 9.05%
998 :     mandelbrot 0.090 0.093 -3.57% 0+0 0+0 0.855 0.728 17.39%
999 :     mlyacc 26.732 23.827 12.19% 162+189 32+57 0.550 0.560 -1.79%
1000 :     nucleic 6.233 6.197 0.59% 3+3 0+0 0.163 0.173 -5.77%
1001 :     ratio-regions 3.780 3.507 7.79% 0+0 0+0 133.993 131.035 2.26%
1002 :     ray 1.595 1.550 2.90% 1+1 0+0 3.440 3.418 0.63%
1003 :     simple 6.972 6.487 7.48% 29+32 5+7 3.523 3.525 -0.05%
1004 :     tsp 1.115 1.063 4.86% 0+0 0+0 7.393 7.265 1.77%
1005 :     vliw 27.765 24.818 11.87% 110+135 25+45 2.265 2.135 6.09%
1006 :     ----------------------------------------------------------------------------
1007 :     Average 6.94% 2.64%
1008 :    
1009 :     X86 Compilation Time Spill+Reload Run Time
1010 :     110.25 New 110.25 New 110.25 New
1011 :    
1012 :     barnesHut 5.530 5.420 2.03% 593+893 597+915 3.532 3.440 2.66%
1013 :     boyer 8.768 7.747 13.19% 493+199 301+289 0.327 0.297 10.11%
1014 :     count-graphs 2.040 2.010 1.49% 298+394 315+457 26.578 28.660 -7.26%
1015 :     fft 1.327 1.302 1.92% 112+209 115+210 1.055 0.962 9.71%
1016 :     knuthBendix 5.218 5.475 -4.69% 451+598 510+650 0.928 0.932 -0.36%
1017 :     lexgen 9.970 9.623 3.60% 1014+841 1157+885 0.947 0.928 1.97%
1018 :     life 1.183 1.183 0.00% 162+182 145+148 0.127 0.103 22.58%
1019 :     logic 3.285 3.512 -6.45% 514+684 591+836 5.682 5.577 1.88%
1020 :     mandelbrot 0.147 0.143 2.33% 38+41 33+54 0.703 0.690 1.93%
1021 :     mlyacc 35.457 32.763 8.22% 3496+4564 3611+4860 0.552 0.550 0.30%
1022 :     nucleic 7.100 6.888 3.07% 239+168 201+158 0.175 0.173 0.96%
1023 :     ratio-regions 6.388 6.843 -6.65% 1182+257 981+300 120.142 120.345 -0.17%
1024 :     ray 2.332 2.338 -0.29% 346+398 402+494 3.593 3.540 1.51%
1025 :     simple 9.912 9.903 0.08% 1475+941 1579+1168 3.057 3.178 -3.83%
1026 :     tsp 1.623 1.532 5.98% 266+200 250+211 8.045 7.878 2.12%
1027 :     vliw 33.947 35.470 -4.29% 2629+2774 2877+3171 2.072 1.890 9.61%
1028 :     ----------------------------------------------------------------------------
1029 :     Average 1.22% 3.36%
1030 :    
1031 :     ----------------------------------------------------------------------
1032 :     Name: Allen Leung
1033 : leunga 583 Date: 2000/03/23 16:25:00
1034 :     Tag: leunga-20000323-fix_x86_alpha
1035 :     Description:
1036 :    
1037 :     1. X86 fixes/changes
1038 :    
1039 :     a. The old code generated for SETcc was completely wrong.
1040 :     The Intel optimization guide is VERY misleading.
1041 :    
1042 :     2. ALPHA fixes/changes
1043 :    
1044 :     a. Added the instructions LDBU, LDWU, STB, STW as per Fermin's suggestion.
1045 :     b. Added a new mode byteWordLoadStores to the functor parameter to Alpha()
1046 :     c. Added reassociation code for address computation.
1047 :    
1048 :     ----------------------------------------------------------------------
1049 :     Name: Allen Leung
1050 : leunga 580 Date: 2000/03/22 01:23:00
1051 :     Tag: leunga-20000322-fix_x86_hppa_ra
1052 :     Description:
1053 :    
1054 :     1. X86 fixes/changes
1055 :    
1056 :     a. x86Rewrite bug with MUL3 (found by Lal)
1057 :     b. Added the instructions FSTS, FSTL
1058 :    
1059 :     2. PA-RISC fixes/changes
1060 :    
1061 :     a. B label should not be a delay slot candidate! Why did this work?
1062 :     b. ADDT(32, REG(32, r), LI n) now generates one instruction instead of two,
1063 :     as it should be.
1064 :     c. The assembly syntax for fstds and fstdd was wrong.
1065 :     d. Added the composite instruction COMICLR/LDO, which is the immediate
1066 :     operand variant of COMCLR/LDO.
1067 :    
1068 :     3. Generic MLRISC
1069 :    
1070 :     a. shuffle.sml rewritten to be slightly more efficient
1071 :     b. DIV bug in mltree-simplify fixed (found by Fermin)
1072 :    
1073 :     4. Register Allocator
1074 :    
1075 :     a. I now release the interference graph earlier during spilling.
1076 :     May improve memory usage.
1077 :    
1078 :     ----------------------------------------------------------------------
1079 : blume 577 Name: Matthias Blume
1080 : blume 578 Date: 2000/03/14 14:15:32
1081 :     Tag: blume_main_v110p26p1_2
1082 :     Description:
1083 :    
1084 :     1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
1085 :     additional argument called "template" which is an optional string that
1086 : monnier 659 specifies the layout of the tool command line. See the CM manual for
1087 : blume 578 explanation.
1088 :    
1089 : monnier 659 2. A special-purpose tool can be "registered" by simply dropping the
1090 : blume 578 corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
1091 :     directory where the .cm file lives that uses this tool. (The
1092 :     behavior/misfeature until now was to look for the tool description
1093 :     files in the current working directory.) As before, tool description
1094 :     files could also be anchored -- in which case they can live anywhere
1095 :     they like. Following the recent e-mail discussion, this change should
1096 :     make it easier to have special-purpose tools that are shipped together
1097 :     with the sources of the program that uses them.
1098 :    
1099 :     ----------------------------------------------------------------------
1100 :     Name: Matthias Blume
1101 : blume 577 Date: 2000/03/10 07:48:34
1102 :     Tag: blume_main_v110p26p1_1
1103 :     Description:
1104 :    
1105 :     I added a re-written version of Dave's fixpt script to src/system.
1106 :     Changes relative to the original version:
1107 :     - sh-ified (not everybody has ksh)
1108 :     - automatically figures out which architecture it runs on
1109 :     - uses ./makeml a bit more cleverly
1110 :     - never invokes ./installml (and, thus, does not clobber your
1111 :     good and working installation of sml in case something goes wrong)
1112 :     - accepts max iteration count using option "-iter <n>"
1113 :     - accepts a "base" name using option "-base <base>"
1114 :    
1115 :     It does not build any extraneous heap images but directly rebuilds
1116 :     bin- and boot-hierarchies using makeml's "-rebuild" switch. Finally,
1117 :     it can incorporate existing bin- and boot- hierarchies. For example,
1118 :     suppose the base is set to "sml" (which is the default). Then it
1119 :     successively builds
1120 :    
1121 :     sml.bin.<arch>-unix and sml.boot.<arch>-unix
1122 :     then sml1.bin.<arch>-unix and sml1.boot.<arch>-unix
1123 :     then sml2.bin.<arch>-unix and sml2.boot.<arch>-unix
1124 :     ...
1125 :     then sml<n>.bin.<arch>-unix and sml<n>.boot.<arch>-unix
1126 :    
1127 :     and so on. If any of these already exist, it will just use what's
1128 :     there. In particular, many people will have the initial set of bin
1129 :     and boot files around, so this saves time for at least one full
1130 :     rebuild. Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
1131 :     <k>=1,2,... is normally not a good idea when invoking fixpt. However,
1132 :     they might be the result of an earlier partial run of fixpt (which
1133 : monnier 659 perhaps got accidentally killed). In this case, fixpt will quickly
1134 : blume 577 move through what exists before continuing where it left off earlier,
1135 :     and, thus, saves a lot of time.
1136 :    
1137 :     ----------------------------------------------------------------------
1138 : leunga 576 Name: Allen Leung
1139 :     Date: 00/03/10 02:20:00
1140 :     Tag: leunga-20000310-fix_x86_asm_ra
1141 :     Description:
1142 : dbm 570
1143 : leunga 576 More assembly output problems involving the indexed addressing mode
1144 :     on the x86 have been found and corrected. Thanks to Fermin Reig for the
1145 :     fix.
1146 :    
1147 :     The interface and implementation of the register allocator have been changed
1148 :     slightly to accommodate the possibility to skip the register allocation
1149 :     phases completely and go directly to memory allocation. This is needed
1150 :     for C-- use.
1151 :    
1152 : dbm 570 ----------------------------------------------------------------------
1153 : blume 572 Name: Matthias Blume
1154 : blume 575 Date: 00/03/09 10:23:53
1155 :     Tag: blume_main_v110p26p1_0
1156 :     Description:
1157 :    
1158 :     * Complete re-organization of library names. Many libraries have been
1159 :     consolidated so that they share the same path anchor. For example,
1160 :     all MLRISC-related libraries are anchored at MLRISC, most libraries that
1161 :     are SML/NJ-specific are under "smlnj". Notice that names like
1162 :     host-cmb.cm or host-compiler.cm no longer exist. See system/README
1163 :     for a complete description of the new naming scheme. Quick reference:
1164 :    
1165 :     host-cmb.cm -> smlnj/cmb.cm
1166 :     host-compiler.cm -> smlnj/compiler.cm
1167 :     full-cm.cm -> smlnj/cm.cm
1168 :     <arch>-<os>.cm -> smlnj/cmb/<arch>-<os>.cm
1169 :     <arch>-compiler.cm -> smlnj/compiler/<arch>.cm
1170 :    
1171 :     * Bug fixes in CM.
1172 :     - exceptions in user code are being passed through (i.e., reach top level)
1173 :     - more bugs in paranoia mode fixed
1174 :     - bug related to checking group owners fixed
1175 :    
1176 :     * New install.sh script that automagically fetches archive files:
1177 :     The new file config/srcarchiveurl must contain the URL of the
1178 :     (remote) directory that contains bin files (or other source archives).
1179 :     If install.sh does not find the archive locally, it tries to get
1180 :     it from that remote directory.
1181 :     This should simplify installation further: For machines that have
1182 :     access to the internet, just fetch <version>-config.tgz, unpack it,
1183 : monnier 659 edit config/targets, and go (run config/install.sh). The script will
1184 : blume 575 fetch everything else that it might need all by itself.
1185 :    
1186 :     For CVS users, this mechanism is not relevant for source archives, but
1187 :     it is convenient for getting new sets of binfiles.
1188 :    
1189 :     Archives should be tar files compressed with either gzip, compress, or
1190 :     bzip2. The script recognizes .tgz, .tar, tar.gz, tz, .tar.Z, and .tar.bz2.
1191 :    
1192 :     ----------------------------------------------------------------------
1193 :     Name: Matthias Blume
1194 : blume 572 Date: 2000/03/07 04:01:04
1195 :     Tag: blume_main_v110_26_2
1196 : dbm 570 Description:
1197 : blume 572 - size info in BOOTLIST
1198 :     * no fixed upper limits for number of bootfiles or length of
1199 :     bootfile names in runtime
1200 :     * falling back to old behavior if no BOOTLIST size info found
1201 :     - allocation size heuristics in .run-sml
1202 :     * tries to read cache size from /proc/cpuinfo (this is important for
1203 :     small-cache Celeron systems!)
1204 :     - install.sh robustified
1205 :     - CM manual updates
1206 :     - paranoid mode
1207 :     * no more CMB.deliver() (i.e., all done by CMB.make())
1208 :     * can re-use existing sml.boot.* files
1209 :     * init.cmi now treated as library
1210 :     * library stamps for consistency checks
1211 :     - sml.boot.<arch>-<os>/PIDMAP file
1212 :     * This file is read by the CM startup code. This is used to minimize
1213 :     the amount of dynamic state that needs to be stowed away for the
1214 :     purpose of sharing between interactive system and user code.
1215 :     - CM.Anchor.anchor instead of CM.Anchor.{set,cancel}
1216 :     * Upon request by Elsa. Anchors now controlled by get-set-pair
1217 :     like most other CM state variables.
1218 :     - Compiler.CMSA eliminated
1219 :     * No longer supported by CM anyway.
1220 :     - fixed bugs in pickler that kept biting Stefan
1221 :     * past refs to past refs (was caused by the possibility that
1222 :     ad-hoc sharing is more discriminating than hash-cons sharing)
1223 :     * integer overflow on LargeInt.minInt
1224 :     - ml-{lex,yacc} build scripts now use new mechanism
1225 :     for building standalone programs
1226 :     - fixed several gcc -Wall warnings that were caused by missing header
1227 :     files, missing initializations, etc., in runtime (not all warnings
1228 :     eliminated, though)

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