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Annotation of /sml/branches/primop-branch-3/NOTES/HISTORY

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

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