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Annotation of /sml/trunk/NOTES/HISTORY

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Original Path: sml/trunk/HISTORY

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 666 Name: Matthias Blume
16 : blume 671 Date: 2000/06/19 11:05:00 JST
17 :     Tag: blume-20000619-chdir-bugfix
18 :     Description:
19 :    
20 :     Fixed a bug in new SrcPath module that sometimes led to a bad chDir call.
21 :    
22 :     ----------------------------------------------------------------------
23 :     Name: Matthias Blume
24 : blume 670 Date: 2000/06/18 22:00:10 JST
25 :     Tag: blume-20000618-implicit-anchors-really-gone
26 :     Description:
27 :    
28 :     I updates the previous HISTORY entry where I forgot to mention that
29 :     implicit anchors are no longer with us.
30 :    
31 :     The current update also gets rid of the (now useless) controller
32 :     CM.Control.implicit_anchors.
33 :    
34 :     ----------------------------------------------------------------------
35 :     Name: Matthias Blume
36 : blume 666 Date: 2000/06/16 17:30:00 JST
37 :     Tag: blume-20000616-anchorenv
38 :     Description:
39 :    
40 :     This patch implements the long anticipated (just kidding :) "anchor
41 :     environment" mechanism. In the course of doing this, I also
42 :     re-implemented CM's internal "SrcPath" module from scratch. The new
43 :     one should be more robust in certain boundary cases. In any case, it
44 :     is a lot cleaner than its predecessor (IMHO).
45 :    
46 :     This time, although there is yet another boot file format change, I
47 :     kept the unpickler backward-compatible. As a result, no new bootfiles
48 :     are necessary and bootstrapping is straightforward. (You cannot read
49 :     new bootfiles into an old system, but the other way around is no
50 :     problem.)
51 :    
52 :     Visible changes:
53 :    
54 : blume 670 ** 0. Implicit path anchors (without the leading $-symbol) are no
55 :     longer recognized at all. This means that such path names are not
56 :     illegal either. For example, the name basis.cm simply refers to a
57 :     local file called "basis.cm" (i.e, the name is an ordinary path
58 :     relative to .cm-files directory). Or, to put it differently, only
59 :     names that start with $ are anchored paths.
60 : blume 666
61 : blume 670 ** 1. The $<singlearc> abbreviation for $/<singlearc> has finally
62 :     vanished.
63 :    
64 :     John (Reppy) had critizised this as soon as I originally proposed and
65 : blume 666 implemented it, but at that time I did not really deeply believe
66 :     him. :) Now I came full-circle because I need the $<singlearc> syntax
67 :     in another place where it cannot be seen as an abbreviation for
68 :     $/<singlearc>. To avoid the confusion, $<singlearc> now means what it
69 :     seems to mean (i.e., it "expands" into the corresponding anchor
70 :     value).
71 :    
72 :     However, when paths are used as members in CM description files, it
73 :     continues to be true that there must be at least another arc after the
74 :     anchor. This is now enforced separately during semantic analysis
75 : blume 670 (i.e., from a lexical/syntactical point of view, the notation is ok.)
76 : blume 666
77 :     ** 2. The "cm" class now accepts an option "bind". The option's value
78 :     is a sub-option list of precisely two items -- one labeled "anchor"
79 :     and the other one labeled "value". As you might expect, "anchor" is
80 :     used to specify an anchor name to be bound, and "value" specifies what
81 :     the anchor is being bound to.
82 :    
83 :     The value must be a directory name and can be given in either standard
84 :     syntax (including the possibility that it is itself an anchored path)
85 :     or native syntax.
86 :    
87 :     Examples:
88 :    
89 :     foo.cm (bind:(anchor:bar value:$mystuff/bar))
90 :     lib.cm (bind:(anchor:a value:"H:\\x\\y\\z")) (* only works under windows *)
91 :    
92 :     and so on.
93 :    
94 :     The meaning of this is that the .cm-file will be processed with an
95 :     augmented anchor environment where the given anchor(s) is/are bound to
96 :     the given values(s).
97 :    
98 :     The rationale for having this feature is this: Suppose you are trying
99 :     to use two different (already stable) libraries a.cm and b.cm (that
100 :     you perhaps didn't write yourself). Further, suppose each of these
101 :     two libraries internally uses its own auxiliary library $aux/lib.cm.
102 :     Normally you would now have a problem because the anchor "lib" can not
103 :     be bound to more than one value globally. Therefore, the project that
104 :     uses both a.cm and b.cm must locally redirect the anchor to some other
105 :     place:
106 :    
107 :     a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
108 :     b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
109 :    
110 :     This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
111 :     /usr/lib/smlnj/b-stuff/aux.cm, respectively.
112 :    
113 :     Hard-wiring path names is a bit inflexible (and CM will verbosely warn
114 :     you when you do so at the time of CM.stabilize). Therefore, you can
115 :     also use an anchored path as the value:
116 :    
117 :     a.cm (bind:(anchor:lib value:$a-lib))
118 :     b.cm (bind:(anchor:lib value:$b-lib))
119 :    
120 :     Now you can globally configure (using the usual CM.Anchor.anchor or
121 :     pathconfig machinery) bindings for "a-lib" and "b-lib". Since "lib"
122 :     itself is always locally bound, setting it globally is no longer
123 :     meaningful or necessary (but it does not hurt either). In fact, "lib"
124 :     can still be used as a global anchor for separate purposes. As a
125 :     matter of fact, one can locally define "lib" in terms of a global
126 :     "lib":
127 :    
128 :     a.cm (bind:(anchor:lib value:$lib/a))
129 :     b.cm (bind:(anchor:lib value:$lib/b))
130 :    
131 :     ** 3: The encoding of path names has changed. This affects the way
132 :     path names are shown in CM's progress report and also the internal
133 :     protocol encoding used for parallel make.
134 :    
135 :     The encoding now uses one or more ':'-separated segments. Each
136 :     segments corresponds to a file that has been specified relative to the
137 :     file given by its preceding segment. The first segment is either
138 :     relative to the CWD, absolute, or anchored. Each segment itself is
139 :     basically a Unix pathname; all segments but the first are relative.
140 :    
141 :     Example:
142 :    
143 :     $foo/bar/baz.cm:a/b/c.sml
144 :    
145 :     This path denotes the file bar/a/b/c.sml relative to the directory
146 :     denoted by anchor "foo". Notice that the encoding also includes
147 :     baz.cm which is the .cm-file that listed a/b/c.sml. As usual, such
148 :     paths are resolved relative to the .cm-files directory, so baz.cm must
149 :     be ignored to get the "real" pathname.
150 :    
151 :     To make this fact more obvious, CM puts the names of such "virtual
152 :     arcs" into parentheses when they appear in progress reports. (No
153 :     parentheses will appear in the internal protocol encoding.) Thus,
154 :     what you really see is:
155 :    
156 :     $foo/bar/(baz.cm):a/b/c.sml
157 :    
158 :     I find this notation to be much more informative than before.
159 :    
160 :     Another new feature of the encoding is that special characters
161 :     including parentheses, colons, (back)slashes, and white space are
162 :     written as \ddd (where ddd is the decimal encoding of the character).
163 :    
164 : blume 670 *** The CM manual still needs to be updated.
165 :    
166 : blume 666 ----------------------------------------------------------------------
167 : leunga 660 Name: Allen Leung
168 :     Date: 2000/06/15 00:38:00
169 :     Tag: leunga-20000615-x86-peephole
170 :    
171 :     x86 Peephole fix by Fermin. Affects c-- and moby only.
172 :    
173 :     ----------------------------------------------------------------------
174 : blume 658 Name: Matthias Blume
175 :     Date: 2000/06/12 11:40:00
176 :     Tag: blume-20000612-parmakefix
177 :     Description:
178 :    
179 :     More cleanup after changing the file naming scheme: This time I
180 :     repaired the parallel make mechanism for CMB.make which I broke earlier.
181 :    
182 :     ----------------------------------------------------------------------
183 : leunga 657 Name: Allen Leung
184 :     Date: 2000/06/09 01:25:00
185 :     Tag: leunga-20000609-various
186 :    
187 :     None of these things should affect normal SML/NJ operations
188 :    
189 :     1. Peephole improvements provided by Fermin (c--)
190 :     2. New annotation DEFUSE for adding extra dependence (moby)
191 :     3. New X86 LOCK instructions (moby)
192 :     4. New machine description language for reservation tables (scheduling)
193 :     5. Fixes to various optimization/analysis modules (branch chaining, dominator
194 :     trees etc.)
195 :     6. I've changed the CM files so that they can work with versions
196 :     110.0.6, 110.25 and 110.28
197 :    
198 :     ----------------------------------------------------------------------
199 : blume 652 Name: Matthias Blume
200 : blume 656 Date: 2000/06/09 12:40:00
201 :     Tag: blume-20000609-log
202 :     Description:
203 :    
204 :     - Removed all(?) remaining RCS Log entries from sources.
205 :    
206 :     - Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
207 :     anchored paths).
208 :    
209 :     ----------------------------------------------------------------------
210 :     Name: Matthias Blume
211 : blume 653 Date: 2000/06/07 17:00:00 JST
212 :     Tag: blume-20000607-no-implicit-anchors
213 :     Description:
214 :    
215 :     1. This update changes the default setting for
216 :     CM.Control.implicit_anchors from true to false. This means that
217 :     implicit anchors are no longer permitted by default. I also tried to
218 :     make sure that nothing else still relies on implicit anchors.
219 :     (This is the next step on the schedule towards a CM that does not even
220 :     have the notion of implicit anchors anymore.)
221 :    
222 :     2. More CM manual updates.
223 :    
224 :     3. I managed to track down and fix the pickling bug I mentioned last
225 :     time. Because of the previously existing workaround, this entails no
226 :     immediate practical changes.
227 :    
228 :     ----------------------------------------------------------------------
229 :     Name: Matthias Blume
230 : blume 652 Date: 2000/06/06 11:15:00 JST
231 :     Tag: blume-20000606-lazierpickle
232 :     Description:
233 :    
234 :     !!!! NEW BOOT FILES !!!!
235 :    
236 :     * The main purpose of this update is to make library pickles lazier in
237 :     order to reduce the initial space penalty for autoloading a library.
238 :     As a result, it is now possible to have $smlnj/compiler.cm
239 :     pre-registered. This should take care of the many complaints or
240 :     inquiries about missing structure Compiler. This required changes to
241 :     CM's internal data structures and small tweaks to some algorithms.
242 :    
243 :     As a neat additional effect, it is no longer necessary (for the sake
244 :     of lean heap image files) to distinguish between a "minimal" CM and a
245 :     "full" CM. Now, there is only one CM (i.e., the "full" version:
246 :     $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
247 :     interactive top level. ($smlnj/cm/minimal.cm is gone.)
248 :    
249 :     To make the life of compiler-hackers easier, "makeml" now also
250 :     pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm). In other
251 :     words, after you bootstrap a new sml for the first time, you will not
252 :     have to autoload $smlnj/cmb.cm again afterwards. (The first time
253 :     around you will still have to do it, though.)
254 :    
255 :     * A second change consists of major updates to the CM manual. There
256 :     are now several appendices with summary information and also a full
257 :     specification of the CM description file syntax.
258 :    
259 :     * In directory src/system I added the script "allcross". This script
260 :     invokes sml and cross-compiles the compiler for all supported
261 :     architectures. (Useful when providing a new set of boot files.)
262 :    
263 :     * There seems to be a latent bug in my "lazy pickles" mechanism. I
264 :     added a small tweak to pickle-util.sml to work around this problem,
265 :     but it is not a proper fix yet. I will investigate further. (The
266 :     effect of the bug was an inflation of library pickle size.)
267 :    
268 :     * Version number increased to 110.28.1 (to avoid compatibility problems).
269 :    
270 :     ----------------------------------------------------------------------
271 : leunga 646 Name: Allen Leung
272 : leunga 648 Date: 2000/05/25 17:28 EDT
273 :     Tag: leunga-20000525-ra
274 :     Description:
275 :    
276 :     Fixed a bug in freezing phase of the register allocator.
277 :    
278 :     ----------------------------------------------------------------------
279 :     Name: Allen Leung
280 : leunga 647 Date: 2000/05/15 22:53 EDT
281 : leunga 646 Tag: leunga-20000515-alpha-x86-ra
282 :     Description:
283 :    
284 :     1. Alpha
285 :    
286 :     Slight cleanup. Removed the instruction SGNXL
287 :    
288 :     2. X86
289 :    
290 :     Added the following instructions to the instruction set:
291 :    
292 :     ROLx, RORx,
293 :     BTx, BTSx, BTLx, BTRx,
294 :     XCHGx, and variants with the LOCK prefix
295 :    
296 :     3. Register Allocation
297 :    
298 :     The module ra-rewrite-with-renaming has been improved.
299 :    
300 : leunga 647 These have no effect on SML/NJ.
301 :    
302 : leunga 646 ----------------------------------------------------------------------
303 : blume 642 Name: Matthias Blume
304 : blume 645 Date: 2000/05/15 16:20:00 JST
305 :     Tag: blume-20000515-lightrebuild
306 :     Description:
307 :    
308 :     1. I added an alternative to "-rebuild" to "makeml". The difference is
309 :     that prior to calling CMB.make' the CM-variable "LIGHT" will be
310 :     defined. In effect, the command will not build any cross-compiler
311 :     backends and therefore finish more quickly.
312 :    
313 :     The "fixpt" script also takes a "-light" switch to be able to use
314 :     this new facility while compiling for a fixpoint.
315 :    
316 :     2. I replaced all mentions of anchored paths in group owner specifications
317 :     with simple relative paths (usually starting with "..").
318 :     The rationale is that a library's internal workings should not be
319 :     compromised by the lack of some anchor. (An anchor is necessary
320 :     for someone who wants to refer to the library by an anchored path,
321 :     but it should not be necessary to build the same library in the first
322 :     place.)
323 :    
324 :     3. I changed the way CM's tool mechanism determines the shell command
325 :     string used for things like ml-yacc etc. so that it does not break
326 :     when CM.Control.implicit_anchors is turned off.
327 :    
328 :     ----------------------------------------------------------------------
329 :     Name: Matthias Blume
330 : blume 644 Date: 2000/05/12 18:20:00 JST
331 :     Tag: blume-20000512-ml-build
332 :     Description:
333 :    
334 :     Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
335 :     getting installed properly (by config/install.sh).
336 :    
337 :     ----------------------------------------------------------------------
338 :     Name: Matthias Blume
339 : blume 643 Date: 2000/05/12 17:30:00 JST
340 :     Tag: blume-20000512-anchors
341 :     Description:
342 :    
343 :     !!! NEW BOOT FILES !!!
344 :    
345 :     This change is in preparation of fading out support for "implicitly
346 :     anchored path names". I went through all sources and used the
347 :     explicit (and relatively new) $-notation. See system/README and the
348 :     CM manual for more info on this.
349 :    
350 :     I also modified the anchoring scheme for some things such as "smlnj",
351 :     "MLRISC", "cm", etc. to take advantage of the fact that explicit
352 :     anchors are more expressive: anchor name and first arc do not have to
353 :     coincide. This entails the following user-visible change:
354 :    
355 :     You have to write $smlnj/foo/bar instead of smlnj/foo/bar. In
356 :     particular, when you fire up sml with a command-line argument, say,
357 :     e.g.:
358 :    
359 :     sml '$smlnj/cmb.cm'
360 :    
361 :     At the ML toplevel prompt:
362 :    
363 :     CM.autoload "$smlnj/cmb.cm";
364 :    
365 :     There is also a new controller in CM.Control that can be used to turn
366 :     off all remaining support for implicit anchors by saying:
367 :    
368 :     CM.autoload "$smlnj/
369 :     #set CM.Control.implicit_anchors false;
370 :    
371 :     This causes CM to reject implicitly anchored paths. This is (for the
372 :     time being) less permissive than the "final" version where there will
373 :     be no more such implicit anchors and relative paths will be just that:
374 :     relative.
375 :    
376 :     The next step (version after next version?) will be to make the
377 :     default for CM.Control.implicit_anchors false. After the dust has
378 :     settled, I can then produce the "final" version of this...
379 :    
380 :     Note: Since bootstrapping is a bit tricky, I provided new boot files.
381 :    
382 :     ----------------------------------------------------------------------
383 :     Name: Matthias Blume
384 : blume 642 Date: 2000/05/11 16:30:00 JST
385 :     Tag: blume-20000511-sources
386 :     Description:
387 :    
388 :     The main change is that I added function CM.sources as a generalized
389 :     version of the earlier CM.makedepend. This entails the following
390 :     additional changes:
391 :    
392 :     - CM.makedepend has been dropped.
393 :    
394 :     - CM manual has been updated.
395 :    
396 :     - TOOLS signature and API have been changed.
397 :    
398 :     ----------------------------------------------------------------------
399 : leunga 640 Name: Allen Leung
400 : leunga 641 Date: 2000/05/10 21:17 EDT
401 :     Tag: leunga-20000510-moby-c--ssa
402 :     Description:
403 :    
404 :     Various bug fixes and new features for C--, Moby and MLRISC optimizations.
405 :     None of these affect SML/NJ.
406 :    
407 :     1. Register Allocation
408 :    
409 :     a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
410 :     This module tries to remove local (i.e. basic block level) redundancies
411 :     during spilling.
412 :    
413 :     b. A new framework for performing region based register allocation.
414 :     Not yet entirely functional.
415 :    
416 :     2. X86
417 :    
418 :     a. DefUse for POP was missing the stack pointer [found by Lal]
419 :     b. Reload for CALL was incorrect in X86Spill [found by John]
420 :     c. Various fixes in X86Spill so that it can be used correctly for
421 :     the new spilling module.
422 :    
423 :     3. SSA/IR
424 :    
425 :     a. New module ir/dj-dataflow.sml implements elimination based
426 :     data flow analysis.
427 :    
428 :     4. MLRiscGen
429 :    
430 :     a. Fix for gc type annotation
431 :    
432 :     5. MDGen
433 :    
434 :     Various fixes for machine description -> ml code translation. For ssa
435 :     only.
436 :    
437 :     ----------------------------------------------------------------------
438 :     Name: Allen Leung
439 : leunga 640 Date: 2000/05/08 22:17 EDT
440 :     Tag: leunga-20000508-labexp
441 :     Description:
442 :    
443 :     Fermin has found a few assembly problems with constant expressions
444 :     generated in LabelExp. Mostly, the problems involve extra parentheses,
445 :     which choke on dumb assemblers. This is his fix.
446 :    
447 :     ----------------------------------------------------------------------
448 : dbm 635 Name: Dave MacQueen
449 :     Date: 2000/04/09 14:00 EDT
450 :     Tag: dbm-20000502-Version_110_28
451 :     Description:
452 :    
453 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
454 :    
455 :     2. Updated config/version to 110.28
456 :    
457 :     3. Updated config/srcarchiveurl
458 :    
459 :     3. New boot files!
460 :     ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
461 :    
462 :     ----------------------------------------------------------------------
463 : blume 634 Name: Matthias Blume
464 :     Date: 2000/05/01 19:05:00 JST
465 :     Tag: blume-20000501-noweb
466 :     Description:
467 :    
468 :     A new noweb tool has been added. The existing system is entirely
469 :     unaffected by this, but some CM users have asked for renewed noweb
470 :     support. Everything is documented in the CM manual.
471 :    
472 :     New (plugin) libraries:
473 :    
474 :     noweb-tool.cm
475 :     nw-ext.cm
476 :    
477 :     ----------------------------------------------------------------------
478 : dbm 633 Name: Dave MacQueen
479 :     Date: 2000/04/30 12:40PM EDT
480 :     Tag: dbm-20000430-bug_fixes
481 :     Description:
482 :    
483 :     1. Fix for bug 1498
484 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sig
485 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sml
486 :     added toRealArray function
487 :     smlnj/src/compiler/MiscUtil/print/ppobj.sml
488 :     added check for tag Obj.RealArray to array printing case in ppObj
489 :    
490 :     2. Fix for bug 1510
491 :     smlnj/src/compiler/Semant/types/typesutil.sml
492 :     fixed definition of dummyargs (used by equalTycon) so that
493 :     dummy args are distinct types
494 :    
495 :     ----------------------------------------------------------------------
496 : blume 629 Name: Matthias Blume
497 : blume 632 Date: 2000/04/30 01:00:00 JST
498 :     Tag: blume-20000430-versions
499 :     Description:
500 :    
501 :     1. CM version numbering added. This is an implementation of Lal's
502 :     proposal for adding version numbers and version checking to .cm
503 :     files. Lal said that his proposal was just that -- a proposal.
504 :     For the time being I went ahead and implemented it so that people
505 :     can comment on it. Everything is completely backward-compatible
506 :     (except for the stable library format, i.e., new bootfiles!).
507 :    
508 :     As usual, see the CM manual for details.
509 :    
510 :     2. An alternative syntax for anchored paths has been implemented.
511 :     Dave has recently voiced the same concerns that I had when I did
512 :     this, so there should be some support. My take is that eventually
513 :     I will let support for the current syntax (where anchors are
514 :     "implicit") fade out in favor of the new, explicit syntax.
515 :     In order to be backward-compatible, both old and new syntax are
516 :     currently supported.
517 :    
518 :     Again, see the CM manual for details.
519 :    
520 :     3. Parallel make is trying to be slightly smarter: When the master
521 :     process finds a "bottleneck", i.e., when there is only one
522 :     compilation unit that can be compiled and everybody else is
523 :     waiting on it, then it will simply compile it directly instead
524 :     of clumsily telling one of the slaves to do it.
525 :    
526 :     4. Support for "unsharing" added. This is necessary in order to be
527 :     able to have two different versions of the same library running
528 :     at the same time (e.g., for trying out a new MLRISC while still
529 :     having the old MLRISC linked into the current compiler, etc.)
530 :     See the CM manual.
531 :    
532 :     5. Simple "makedepend" functionality added for generating Makefile
533 :     dependency information. (This is rather crude at the moment.
534 :     Expect some changes here in the future.)
535 :    
536 :     6. ".fun" added as a recognized suffix for ML files. Also documented
537 :     explicitly in the manual that the fallback behavior (unknown suffix
538 :     -> ML file) is not an official feature!
539 :    
540 :     7. Small changes to the pickler for stable libraries.
541 :    
542 :     8. Several internal changes to CM (for cleanup/improvement).
543 :    
544 :    
545 :     !!!! NEW BINFILES !!!!
546 :    
547 :     ----------------------------------------------------------------------
548 :     Name: Matthias Blume
549 : blume 631 Date: 2000/04/28 17:30:00 JST
550 :     Tag: blume-20000428-pathconfig
551 :     Description:
552 :    
553 :     1. I changed config/install.sh to remove duplicate entries from the
554 :     lib/pathconfig file at the end. Moreover, the final version of
555 :     lib/pathconfig is sorted alphabetically. The same (sorting) is done
556 :     in src/system/installml.
557 :    
558 :     2. The config/install.sh script now consistently uses relative
559 :     pathnames in lib/pathconfig whenever the anchor is in the lib
560 :     directory. (So far this was true for the libraries that come
561 :     pre-compiled and bundled as part of the bootfiles but not for
562 :     libraries that are compiled by the script itself.)
563 :    
564 :     ----------------------------------------------------------------------
565 :     Name: Matthias Blume
566 : blume 629 Date: 2000/04/26 13:10:00 JST
567 :     Tag: blume-20000426-fun_suffix
568 :     Description:
569 :    
570 :     Added ".fun" as a recognized file name suffix (for ML code).
571 :    
572 :     ----------------------------------------------------------------------
573 : leunga 628 Name: Allen Leung
574 :     Date: 2000/04/25 17:00:00 EST
575 :     Tag: leunga-20000425-alpha-ra
576 :     Description:
577 :    
578 :     1. Alpha
579 :    
580 :     PSEUDOARITH was missing in AlphaRewrite. This causes an endless loop
581 :     in C--.
582 :    
583 :     2. RA
584 :    
585 :     Added a flag "ra-dump-size" to print out the size of the flowgraph
586 :     and the interference graph.
587 :    
588 :     ----------------------------------------------------------------------
589 : dbm 627 Name: Dave MacQueen
590 :     Date: 2000/04/25/
591 :     Tag: dbm-20000425-mlyacc_doc_examples
592 :     Description:
593 :     Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
594 :     Updated all three examples in src/ml-yacc/examples to run
595 :     under 110.* using CM.make.
596 :    
597 :     ----------------------------------------------------------------------
598 : leunga 624 Name: Allen Leung
599 :     Date: 2000/04/20 23:04:00 EST
600 :     Tag: leunga-20000420-ssa-c---stuff
601 :     Description:
602 :    
603 :     This update synchronizes my repository with Yale's. Most of these
604 :     changes, however, do not affect SML/NJ at all (the RA is an exception).
605 :    
606 :     1. Register Allocator
607 :    
608 :     a. An improvement in the interference graph construction:
609 :     Given a copy
610 :    
611 :     s <- t
612 :    
613 : leunga 628 no interference edge between s and t is added for this definition of s.
614 : leunga 624
615 :     b. I've added two new spill heuristic modules that Fermin and I developed
616 :     (in the new library RA.cm). These are unused in SML/NJ but maybe
617 :     useful for others (Moby?)
618 :    
619 :     2. X86
620 :    
621 :     a. Various fixes in the backend provided by Fermin [C--] and Lal.
622 :    
623 :     3. Alpha
624 :    
625 :     a. Added the BSR instruction and code generation that goes with it [C--]
626 :     b. Other fixes too numerous to recount provided by Fermin [C--]
627 :    
628 :     4. Regmaps
629 :    
630 :     a. The regmaps are not initialized with the identity physical bindings
631 :     at creation time. This is unneeded.
632 :    
633 :     5. MLRISC Optimizations
634 :    
635 :     a. The DJ-Graph module can now compute the iterated dominance frontiers
636 :     intersects with liveness incrementally in linear time! Woohoo!
637 :     This is now used in my new SSA construction algorithm.
638 :    
639 :     b. THe branch reorganization module is now smarter about linear chains of
640 :     basic blocks.
641 :    
642 :    
643 :     ----------------------------------------------------------------------
644 : blume 615 Name: Matthias Blume
645 :     Date: 2000/04/12 13:52:00 JST
646 :     Tag: blume_main_v110p27_1
647 :     Description:
648 :    
649 :     Changed install.sh script to handle archive files without version number
650 :     and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
651 :     name of the boot file archive.
652 :    
653 :     ----------------------------------------------------------------------
654 : dbm 607 Name: Dave MacQueen
655 :     Date: 2000/04/09 14:00 EDT
656 :     Tag: dbm-20000410-Version_110_27
657 :     Description:
658 :    
659 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
660 :    
661 :     2. Updated src/config/version to 110.27
662 :    
663 :     3. New boot files!
664 :    
665 :     ----------------------------------------------------------------------
666 : leunga 606 Name: Allen Leung
667 :     Date: 2000/04/09 19:09:00 EST
668 :     Tag: leunga-20000409-misc
669 :     Description:
670 :    
671 :     1. Yet another fix for x86 assembly for idivl, imull, mull and friends.
672 :    
673 :     2. Miscellaneous improvements to MLRISC (unused in sml/nj)
674 :    
675 :     ----------------------------------------------------------------------
676 : monnier 605 Name: Stefan
677 :     Date: 2000/04/07 10:00:00 EDT
678 :     Tag: monnier-20000406-branch-handling
679 :     Description:
680 :    
681 :     Improved handling of branches (mostly those generated from
682 :     polymorphic equality), removed switchoff and changed the
683 :     default optimization settings (more cpsopt and less flintopt).
684 :    
685 :     ----------------------------------------------------------------------
686 : leunga 601 Name: Allen Leung
687 : leunga 602 Date: 2000/04/06 01:30:00 EST
688 :     Tag: leunga-20000406-peephole-x86-SSA-2
689 :     Description:
690 :    
691 :     Forgot a few files.
692 :    
693 :     ----------------------------------------------------------------------
694 :     Name: Allen Leung
695 : leunga 601 Date: 2000/04/06 00:36:00 EST
696 :     Tag: leunga-20000406-peephole-x86-SSA
697 :     Description:
698 :    
699 :     1. New Peephole code
700 :    
701 :     2. Minor improvement to X86 instruction selection
702 :    
703 :     3. Various fixes to SSA and machine description -> code translator
704 :    
705 :     ----------------------------------------------------------------------
706 : blume 595 Name: Matthias Blume
707 :     Date: 2000/04/05 12:30:00 JST
708 :     Tag: blume_main_v110p26p2_3
709 :     Description:
710 :    
711 :     This update just merges three minor cosmetic updates to CM's sources
712 :     to get ready for the 110.27 code freeze on Friday. No functionality
713 :     has changed.
714 :    
715 :     ----------------------------------------------------------------------
716 : leunga 593 Name: Allen Leung
717 : leunga 594 Date: 2000/04/04 19:39:00 EST
718 :     Tag: leunga-20000404-x86-asm
719 :     Description:
720 :    
721 :     1. Fixed a problem in X86 assembly.
722 :    
723 :     Things like
724 :    
725 :     jmp %eax
726 :     jmp (%eax)
727 :    
728 :     should be output as
729 :    
730 :     jmp *%eax
731 :     jmp *(%eax)
732 :    
733 :     2. Assembly output
734 :    
735 :     Added a new flag
736 :    
737 :     "asm-indent-copies" (default to false)
738 :    
739 :     When this flag is on, parallel copies will be indented an extra level.
740 :    
741 :     ----------------------------------------------------------------------
742 :     Name: Allen Leung
743 : leunga 593 Date: 2000/04/04 03:18:00 EST
744 :     Tag: leunga-20000404-C--Moby
745 :     Description:
746 :    
747 :     All of these fixes are related to C--, Moby, and my own optimization
748 :     stuff; so they shouldn't affect SML/NJ.
749 :    
750 :     1. X86
751 :    
752 :     Various fixes related floating point, and extensions.
753 :    
754 :     2. Alpha
755 :    
756 :     Some extra patterns related to loads with signed/zero extension
757 :     provided by Fermin.
758 :    
759 :     3. Assembly
760 :    
761 : monnier 659 When generating assembly, resolve the value of client defined constants,
762 : leunga 593 instead of generating symbolic values. This is controlled by the
763 :     new flag "asm-resolve-constants", which is default to true.
764 :    
765 :     4. Machine Descriptions
766 :    
767 :     a. The precedence parser was slightly broken when parsing infixr symbols.
768 :     b. The type generalizing code had the bound variables reversed, resulting
769 :     in a problem during arity raising.
770 :     c. Various fixes in machine descriptions.
771 :    
772 :     ----------------------------------------------------------------------
773 : blume 592 Name: Matthias Blume
774 :     Date: 2000/04/03 16:05:00 JST
775 :     Tag: blume_main_v110p26p2_2
776 :     Description:
777 :    
778 :     I eliminated coreEnv from compInfo. Access to the "Core" structure is
779 :     now done via the ordinary static environment that is context to each
780 :     compilation unit.
781 :    
782 :     To this end, I arranged that instead of "structure Core" as "structure
783 :     _Core" is bound in the pervasive environment. Core access is done via
784 : monnier 659 _Core (which can never be accidentally rebound because _Core is not a
785 : blume 592 legal surface-syntax symbol).
786 :    
787 :     The current solution is much cleaner because the core environment is
788 :     now simply part of the pervasive environment which is part of every
789 :     compilation unit's context anyway. In particular, this eliminates all
790 :     special-case handling that was necessary until now in order to deal
791 :     with dynamic and symbolic parts of the core environment.
792 :    
793 :     Remaining hackery (to bind the "magic" symbol _Core) is localized in the
794 : monnier 659 compilation manager's bootstrap compiler (actually: in the "init group"
795 : blume 592 handling). See the comments in src/system/smlnj/init/init.cmi for
796 :     more details.
797 :    
798 :     I also tried to track down all mentions of "Core" (as string argument
799 :     to Symbol.strSymbol) in the compiler and replaced them with a
800 :     reference to the new CoreSym.coreSym. Seems cleaner since the actual
801 :     name appears in one place only.
802 :    
803 :     Binfile and bootfile format have not changed, but the switchover from
804 :     the old "init.cmi" to the new one is a bit tricky, so I supplied new
805 :     bootfiles anyway.
806 :    
807 :     ----------------------------------------------------------------------
808 : leunga 591 Name: Allen Leung
809 :     Date: 2000/04/02 21:17:00 EST
810 :     Tag: leunga-20000402-mltree
811 :     Description:
812 : leunga 585
813 : leunga 591 1. Renamed the constructor CALL in MLTREE by popular demand.
814 :     2. Added a bunch of files from my repository. These are currently
815 :     used by other non-SMLNJ backends.
816 :    
817 : leunga 576 ----------------------------------------------------------------------
818 : leunga 590 Name: Allen Leung
819 :     Date: 2000/03/31 21:15:00 EST
820 :     Tag: leunga-20000331-aliasing
821 :     Description:
822 :    
823 :     This update contains a rewritten (and hopefully more correct) module
824 :     for extracting aliasing information from CPS.
825 :    
826 :     To turn on this feature:
827 :    
828 :     Compiler.Control.CG.memDisambiguate := true
829 :    
830 :     To pretty print the region information with assembly
831 :    
832 :     Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
833 :    
834 :     To control how many levels of aliasing information are printed, use:
835 :    
836 :     Compiler.Control.MLRISC.getInt "points-to-show-level" := n
837 :    
838 :     The default of n is 3.
839 :    
840 :     ----------------------------------------------------------------------
841 : dbm 589 Name: David MacQueen
842 :     Date: 2000/03/31 11:15:00 EST
843 :     Tag: dbm-20000331-runtime_fix
844 :     Description:
845 :    
846 :     This update contains:
847 :    
848 :     1. runtime/c-lib/c-libraries.c
849 :     includes added in revision 1.2 caused compilation errors on hppa-hpux
850 :    
851 :     2. fix for bug 1556
852 :     system/Basis/Implementation/NJ/internal-signals.sml
853 :    
854 :     ----------------------------------------------------------------------
855 : blume 587 Name: Matthias Blume
856 : blume 588 Date: 2000/03/31 18:00:00 JST
857 :     Tag: blume_main_v110p26p2_1
858 :     Description:
859 :    
860 :     This update contains:
861 :    
862 :     1. A small change to CM's handling of stable libraries:
863 :     CM now maintains one "global" modmap that is used for all stable
864 :     libraries. The use of such a global modmap maximizes sharing and
865 :     minimizes the need for re-traversing parts of environments during
866 :     modmap construction. (However, this has minor impact since modmap
867 :     construction seems to account for just one percent or less of total
868 :     compile time.)
869 :    
870 :     2. I added a "genmap" phase to the statistics. This is where I got the
871 :     "one percent" number (see above).
872 :    
873 :     3. CM's new tool parameter mechanism just became _even_ better. :)
874 :     - The parser understands named parameters and recursive options.
875 :     - The "make" and "shell" tools use these new features.
876 :     (This makes it a lot easier to cascade these tools.)
877 :     - There is a small syntax change: named parameters use a
878 :    
879 :     <name> : ( <option> ... ) or
880 :     <name> : <string>
881 :    
882 :     syntax. Previously, named parameters were implemented in an
883 :     ad-hoc fashion by each tool individually (by parsing strings)
884 :     and had the form
885 :    
886 :     <name>=<string>
887 :    
888 :     See the CM manual for a full description of these issues.
889 :    
890 :     ----------------------------------------------------------------------
891 :     Name: Matthias Blume
892 : blume 587 Date: 2000/03/30 18:00:00 JST
893 :     Tag: blume_main_v110p26p2_0
894 :     Description:
895 :    
896 :     !!!!! WARNING !!!!!!
897 :     !! New binfiles !!
898 :     !!!!!!!!!!!!!!!!!!!!
899 :    
900 :     This update contains:
901 :    
902 :     1. Moderate changes to CM:
903 :    
904 :     - Changes to CM's tools mechanism. In particular, it is now possible
905 :     to have tools that accept additional "command line" parameters
906 :     (specified in the .cm file at each instance where the tool's class is
907 :     used).
908 :    
909 : monnier 659 This was done to accommodate the new "make" and "shell" tools which
910 :     facilitate fairly seamless hookup to portions of code managed using
911 : blume 587 Makefiles or Shell scripts.
912 :    
913 :     There are no classes "shared" or "private" anymore. Instead, the
914 :     sharing annotation is now a parameter to the "sml" class.
915 :    
916 :     There is a bit of generic machinery for implementing one's own
917 :     tools that accept command-line parameters. However, I am not yet fully
918 :     satisfied with that part, so expect changes here in the future.
919 :    
920 :     All existing tools are described in the CM manual.
921 :    
922 : monnier 659 - Slightly better error handling. (CM now suppresses many followup
923 : blume 587 error messages that tended to be more annoying than helpful.)
924 :    
925 :     2. Major changes to the compiler's static environment data structures.
926 :    
927 :     - no CMStaticEnv anymore.
928 :     - no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
929 :     but it is called Environment), no conversions between different
930 :     kinds of static environments
931 :    
932 :     - There is still a notion of a "modmap", but such modmaps are generated
933 :     on demand at the time when they are needed. This sounds slow, but I
934 :     sped up the code that generates modmaps enough for this not to lead to
935 :     a slowdown of the compiler (at least I didn't detect any).
936 :    
937 :     - To facilitate rapid modmap generation, static environments now
938 :     contain an (optional) "modtree" structure. Modtree annotations are
939 :     constructed by the unpickler during unpickling. (This means that
940 :     the elaborator does not have to worry about modtrees at all.)
941 :     Modtrees have the advantage that they are compositional in the same
942 :     way as the environment data structure itself is compositional.
943 :     As a result, modtrees never hang on to parts of an environment that
944 :     has already been rendered "stale" by filtering or rebinding.
945 :    
946 :     - I went through many, many trials and errors before arriving at the
947 :     current solution. (The initial idea of "linkpaths" did not work.)
948 :     But the result of all this is that I have touched a lot of files that
949 :     depend on the "modules" and "types" data structures (most of the
950 :     elaborator). There were a lot of changes during my "linkpath" trials
951 :     that could have been reverted to their original state but weren't.
952 :     Please, don't be too harsh on me for messing with this code a bit more
953 :     than what was strictly necessary... (I _did_ resist the tempation
954 :     of doing any "global reformatting" to avoid an untimely death at
955 :     Dave's hands. :)
956 :    
957 :     - One positive aspect of the previous point: At least I made sure that
958 :     all files that I touched now compile without warnings (other than
959 :     "polyEqual").
960 :    
961 :     - compiler now tends to run "leaner" (i.e., ties up less memory in
962 :     redundant modmaps)
963 :    
964 :     ----------------------------------------------------------------------
965 : leunga 580 Name: Allen Leung
966 : leunga 585 Date: 2000/03/29 18:00:00
967 :     Tag: leunga-20000327-mlriscGen_hppa_alpha_x86
968 : leunga 586 Boot files (optional): ftp://react-ilp.cs.nyu.edu/leunga/110.26.1-sml.boot.x86-unix-20000330.tar.gz
969 : leunga 585 Description:
970 :    
971 :     This update contains *MAJOR* changes to the way code is generated from CPS
972 :     in the module mlriscGen, and in various backend modules.
973 :    
974 :     CHANGES
975 :     =======
976 :    
977 :     1. MLRiscGen: forward propagation fix.
978 :    
979 :     There was a bug in forward propagation introduced at about the same time
980 :     as the MLRISC x86 backend, which prohibits coalescing to be
981 :     performed effectively in loops.
982 :    
983 :     Effect: speed up of loops in RISC architectures.
984 :     By itself, this actually slowed down certain benchmarks on the x86.
985 :    
986 :     2. MLRiscGen: forward propagating addresses from consing.
987 :    
988 :     I've changed the way consing code is generated. Basically I separated
989 :     out the initialization part:
990 :    
991 :     store tag, offset(allocptr)
992 :     store elem1, offset+4(allocptr)
993 :     store elem2, offset+8(allocptr)
994 :     ...
995 :     store elemn, offset+4n(allocptr)
996 :    
997 :     and the address computation part:
998 :    
999 :     celladdr <- offset+4+alloctpr
1000 :    
1001 :     and move the address computation part
1002 :    
1003 :     Effect: register pressure is generally lower as a result. This
1004 :     makes compilation of certain expressions much faster, such as
1005 :     long lists with non-trivial elements.
1006 :    
1007 :     [(0,0), (0,0), .... (0,0)]
1008 :    
1009 :     3. MLRiscGen: base pointer elimination.
1010 :    
1011 :     As part of the linkage mechanism, we generate the sequence:
1012 :    
1013 :     L: ... <- start of the code fragment
1014 :    
1015 :     L1:
1016 :     base pointer <- linkreg - L1 + L
1017 :    
1018 :     The base pointer was then used for computing relocatable addresses
1019 :     in the code fragment. Frequently (such as in lots of continuations)
1020 :     this is not needed. We now eliminate this sequence whenever possible.
1021 :    
1022 :     For compile time efficiency, I'm using a very stupid local heuristic.
1023 :     But in general, this should be done as a control flow analysis.
1024 :    
1025 :     Effect: Smaller code size. Speed up of most programs.
1026 :    
1027 :     4. Hppa back end
1028 :    
1029 :     Long jumps in span dependence resolution used to depend on the existence
1030 :     of the base pointer.
1031 :    
1032 :     A jump to a long label L was expanded into the following sequence:
1033 :    
1034 :     LDIL %hi(L-8192), %r29
1035 :     LDO %lo(L-8192)(%r29), %r29
1036 :     ADD %r29, baseptr, %r29
1037 :     BV,n %r0(%r29)
1038 :    
1039 :     In the presence of change (3) above, this will not work. I've changed
1040 :     it so that the following sequence of instructions are generated, which
1041 :     doesn't mention the base pointer at all:
1042 :    
1043 :     BL,n L', %r29 /* branch and link, L' + 4 -> %r29 */
1044 :     L': ADDIL L-(L'+4), %r29 /* Compute address of L */
1045 :     BV,n %r0(%r29) /* Jump */
1046 :    
1047 :     5. Alpha back end
1048 :    
1049 :     New alpha instructions LDB/LDW have been added, as per Fermin's
1050 :     suggestions. This is unrelated to all other changes.
1051 :    
1052 :     6. X86 back end
1053 :    
1054 :     I've changed andl to testl in the floating point test sequence
1055 :     whenever appropriate. The Intel optimization guide states that
1056 : monnier 659 testl is preferable to andl.
1057 : leunga 585
1058 :     7. RA (x86 only)
1059 :    
1060 :     I've improved the spill propagation algorithm, using an approximation
1061 :     of maximal weighted independent sets. This seems to be necessary to
1062 :     alleviate the negative effect in light of the slow down in (1).
1063 :    
1064 :     I'll write down the algorithm one of these days.
1065 :    
1066 :     8. MLRiscGen: frequencies
1067 :    
1068 :     I've added an annotation that states that all call gc blocks have zero
1069 :     execution frequencies. This improves register allocation on the x86.
1070 :    
1071 :     BENCHMARKS
1072 :     ==========
1073 :    
1074 :     I've only perform the comparison on 110.25.
1075 :    
1076 :     The platforms are:
1077 :    
1078 :     HPPA A four processor HP machine (E9000) with 5G of memory.
1079 :     X86 A 300Hhz Pentium II with 128M of memory, and
1080 :     SPARC An Ultra sparc 2 with 512M of memory.
1081 :    
1082 :     I used the following parameters for the SML benchmarks:
1083 :    
1084 :     @SMLalloc
1085 :     HPPA 256k
1086 :     SPARC 512k
1087 :     X86 256k
1088 :    
1089 :     COMPILATION TIME
1090 :     ----------------
1091 :     Here are the numbers comparing the compilation times of the compilers.
1092 :     I've only compared 110.25 compiling the new sources versus
1093 :     a fixpoint version of the new compiler compiling the same.
1094 :    
1095 :     110.25 New
1096 :     Total Time in RA Spill+Reload Total Time In RA Spill+Reload
1097 :     HPPA 627s 116s 2684+3584 599s 95s 1003+1879
1098 :     SPARC 892s 173s 2891+3870 708s 116s 1004+1880
1099 :     X86 999s 315s 94006+130691 987s 296s 108877+141957
1100 :    
1101 :     110.25 New
1102 :     Code Size Code Size
1103 :     HPPA 8596736 8561421
1104 :     SPARC 8974299 8785143
1105 :     X86 9029180 8716783
1106 :    
1107 :     So in summary, things are at least as good as before. Dramatic
1108 :     reduction in compilation is obtained on the Sparc; I can't explain it,
1109 :     but it is reproducible. Perhaps someone should try to reproduce this
1110 :     on their own machines.
1111 :    
1112 :     SML BENCHMARKS
1113 :     --------------
1114 :    
1115 :     On the average, all benchmarks perform at least as well as before.
1116 :    
1117 :     HPPA Compilation Time Spill+Reload Run Time
1118 :     110.25 New 110.25 New 110.25 New
1119 :    
1120 :     barnesHut 3.158 3.015 4.75% 1+1 0+0 2.980 2.922 2.00%
1121 :     boyer 6.152 5.708 7.77% 0+0 0+0 0.218 0.213 2.34%
1122 :     count-graphs 1.168 1.120 4.32% 0+0 0+0 22.705 23.073 -1.60%
1123 :     fft 0.877 0.792 10.74% 1+3 1+3 0.602 0.587 2.56%
1124 :     knuthBendix 3.180 2.857 11.32% 0+0 0+0 0.675 0.662 2.02%
1125 :     lexgen 6.190 5.290 17.01% 0+0 0+0 0.913 0.788 15.86%
1126 :     life 0.803 0.703 14.22% 25+25 0+0 0.153 0.140 9.52%
1127 :     logic 2.048 2.007 2.08% 6+6 1+1 4.133 4.008 3.12%
1128 :     mandelbrot 0.077 0.080 -4.17% 0+0 0+0 0.765 0.712 7.49%
1129 :     mlyacc 22.932 20.937 9.53% 154+181 32+57 0.468 0.430 8.91%
1130 :     nucleic 5.183 5.060 2.44% 2+2 0+0 0.125 0.120 4.17%
1131 :     ratio-regions 3.357 3.142 6.84% 0+0 0+0 116.225 113.173 2.70%
1132 :     ray 1.283 1.290 -0.52% 0+0 0+0 2.887 2.855 1.11%
1133 :     simple 6.307 6.032 4.56% 28+30 5+7 3.705 3.658 1.28%
1134 :     tsp 0.888 0.862 3.09% 0+0 0+0 7.040 6.893 2.13%
1135 :     vliw 24.378 23.455 3.94% 106+127 25+45 2.758 2.707 1.91%
1136 :     --------------------------------------------------------------------------
1137 :     Average 6.12% 4.09%
1138 :    
1139 :     SPARC Compilation Time Spill+Reload Run Time
1140 :     110.25 New 110.25 New 110.25 New
1141 :    
1142 :     barnesHut 3.778 3.592 5.20% 2+2 0+0 3.648 3.453 5.65%
1143 :     boyer 6.632 6.110 8.54% 0+0 0+0 0.258 0.242 6.90%
1144 :     count-graphs 1.435 1.325 8.30% 0+0 0+0 33.672 34.737 -3.07%
1145 :     fft 0.980 0.940 4.26% 3+9 2+6 0.838 0.827 1.41%
1146 :     knuthBendix 3.590 3.138 14.39% 0+0 0+0 0.962 0.967 -0.52%
1147 :     lexgen 6.593 6.072 8.59% 1+1 0+0 1.077 1.078 -0.15%
1148 :     life 0.972 0.868 11.90% 26+26 0+0 0.143 0.140 2.38%
1149 :     logic 2.525 2.387 5.80% 7+7 1+1 5.625 5.158 9.05%
1150 :     mandelbrot 0.090 0.093 -3.57% 0+0 0+0 0.855 0.728 17.39%
1151 :     mlyacc 26.732 23.827 12.19% 162+189 32+57 0.550 0.560 -1.79%
1152 :     nucleic 6.233 6.197 0.59% 3+3 0+0 0.163 0.173 -5.77%
1153 :     ratio-regions 3.780 3.507 7.79% 0+0 0+0 133.993 131.035 2.26%
1154 :     ray 1.595 1.550 2.90% 1+1 0+0 3.440 3.418 0.63%
1155 :     simple 6.972 6.487 7.48% 29+32 5+7 3.523 3.525 -0.05%
1156 :     tsp 1.115 1.063 4.86% 0+0 0+0 7.393 7.265 1.77%
1157 :     vliw 27.765 24.818 11.87% 110+135 25+45 2.265 2.135 6.09%
1158 :     ----------------------------------------------------------------------------
1159 :     Average 6.94% 2.64%
1160 :    
1161 :     X86 Compilation Time Spill+Reload Run Time
1162 :     110.25 New 110.25 New 110.25 New
1163 :    
1164 :     barnesHut 5.530 5.420 2.03% 593+893 597+915 3.532 3.440 2.66%
1165 :     boyer 8.768 7.747 13.19% 493+199 301+289 0.327 0.297 10.11%
1166 :     count-graphs 2.040 2.010 1.49% 298+394 315+457 26.578 28.660 -7.26%
1167 :     fft 1.327 1.302 1.92% 112+209 115+210 1.055 0.962 9.71%
1168 :     knuthBendix 5.218 5.475 -4.69% 451+598 510+650 0.928 0.932 -0.36%
1169 :     lexgen 9.970 9.623 3.60% 1014+841 1157+885 0.947 0.928 1.97%
1170 :     life 1.183 1.183 0.00% 162+182 145+148 0.127 0.103 22.58%
1171 :     logic 3.285 3.512 -6.45% 514+684 591+836 5.682 5.577 1.88%
1172 :     mandelbrot 0.147 0.143 2.33% 38+41 33+54 0.703 0.690 1.93%
1173 :     mlyacc 35.457 32.763 8.22% 3496+4564 3611+4860 0.552 0.550 0.30%
1174 :     nucleic 7.100 6.888 3.07% 239+168 201+158 0.175 0.173 0.96%
1175 :     ratio-regions 6.388 6.843 -6.65% 1182+257 981+300 120.142 120.345 -0.17%
1176 :     ray 2.332 2.338 -0.29% 346+398 402+494 3.593 3.540 1.51%
1177 :     simple 9.912 9.903 0.08% 1475+941 1579+1168 3.057 3.178 -3.83%
1178 :     tsp 1.623 1.532 5.98% 266+200 250+211 8.045 7.878 2.12%
1179 :     vliw 33.947 35.470 -4.29% 2629+2774 2877+3171 2.072 1.890 9.61%
1180 :     ----------------------------------------------------------------------------
1181 :     Average 1.22% 3.36%
1182 :    
1183 :     ----------------------------------------------------------------------
1184 :     Name: Allen Leung
1185 : leunga 583 Date: 2000/03/23 16:25:00
1186 :     Tag: leunga-20000323-fix_x86_alpha
1187 :     Description:
1188 :    
1189 :     1. X86 fixes/changes
1190 :    
1191 :     a. The old code generated for SETcc was completely wrong.
1192 :     The Intel optimization guide is VERY misleading.
1193 :    
1194 :     2. ALPHA fixes/changes
1195 :    
1196 :     a. Added the instructions LDBU, LDWU, STB, STW as per Fermin's suggestion.
1197 :     b. Added a new mode byteWordLoadStores to the functor parameter to Alpha()
1198 :     c. Added reassociation code for address computation.
1199 :    
1200 :     ----------------------------------------------------------------------
1201 :     Name: Allen Leung
1202 : leunga 580 Date: 2000/03/22 01:23:00
1203 :     Tag: leunga-20000322-fix_x86_hppa_ra
1204 :     Description:
1205 :    
1206 :     1. X86 fixes/changes
1207 :    
1208 :     a. x86Rewrite bug with MUL3 (found by Lal)
1209 :     b. Added the instructions FSTS, FSTL
1210 :    
1211 :     2. PA-RISC fixes/changes
1212 :    
1213 :     a. B label should not be a delay slot candidate! Why did this work?
1214 :     b. ADDT(32, REG(32, r), LI n) now generates one instruction instead of two,
1215 :     as it should be.
1216 :     c. The assembly syntax for fstds and fstdd was wrong.
1217 :     d. Added the composite instruction COMICLR/LDO, which is the immediate
1218 :     operand variant of COMCLR/LDO.
1219 :    
1220 :     3. Generic MLRISC
1221 :    
1222 :     a. shuffle.sml rewritten to be slightly more efficient
1223 :     b. DIV bug in mltree-simplify fixed (found by Fermin)
1224 :    
1225 :     4. Register Allocator
1226 :    
1227 :     a. I now release the interference graph earlier during spilling.
1228 :     May improve memory usage.
1229 :    
1230 :     ----------------------------------------------------------------------
1231 : blume 577 Name: Matthias Blume
1232 : blume 578 Date: 2000/03/14 14:15:32
1233 :     Tag: blume_main_v110p26p1_2
1234 :     Description:
1235 :    
1236 :     1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
1237 :     additional argument called "template" which is an optional string that
1238 : monnier 659 specifies the layout of the tool command line. See the CM manual for
1239 : blume 578 explanation.
1240 :    
1241 : monnier 659 2. A special-purpose tool can be "registered" by simply dropping the
1242 : blume 578 corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
1243 :     directory where the .cm file lives that uses this tool. (The
1244 :     behavior/misfeature until now was to look for the tool description
1245 :     files in the current working directory.) As before, tool description
1246 :     files could also be anchored -- in which case they can live anywhere
1247 :     they like. Following the recent e-mail discussion, this change should
1248 :     make it easier to have special-purpose tools that are shipped together
1249 :     with the sources of the program that uses them.
1250 :    
1251 :     ----------------------------------------------------------------------
1252 :     Name: Matthias Blume
1253 : blume 577 Date: 2000/03/10 07:48:34
1254 :     Tag: blume_main_v110p26p1_1
1255 :     Description:
1256 :    
1257 :     I added a re-written version of Dave's fixpt script to src/system.
1258 :     Changes relative to the original version:
1259 :     - sh-ified (not everybody has ksh)
1260 :     - automatically figures out which architecture it runs on
1261 :     - uses ./makeml a bit more cleverly
1262 :     - never invokes ./installml (and, thus, does not clobber your
1263 :     good and working installation of sml in case something goes wrong)
1264 :     - accepts max iteration count using option "-iter <n>"
1265 :     - accepts a "base" name using option "-base <base>"
1266 :    
1267 :     It does not build any extraneous heap images but directly rebuilds
1268 :     bin- and boot-hierarchies using makeml's "-rebuild" switch. Finally,
1269 :     it can incorporate existing bin- and boot- hierarchies. For example,
1270 :     suppose the base is set to "sml" (which is the default). Then it
1271 :     successively builds
1272 :    
1273 :     sml.bin.<arch>-unix and sml.boot.<arch>-unix
1274 :     then sml1.bin.<arch>-unix and sml1.boot.<arch>-unix
1275 :     then sml2.bin.<arch>-unix and sml2.boot.<arch>-unix
1276 :     ...
1277 :     then sml<n>.bin.<arch>-unix and sml<n>.boot.<arch>-unix
1278 :    
1279 :     and so on. If any of these already exist, it will just use what's
1280 :     there. In particular, many people will have the initial set of bin
1281 :     and boot files around, so this saves time for at least one full
1282 :     rebuild. Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
1283 :     <k>=1,2,... is normally not a good idea when invoking fixpt. However,
1284 :     they might be the result of an earlier partial run of fixpt (which
1285 : monnier 659 perhaps got accidentally killed). In this case, fixpt will quickly
1286 : blume 577 move through what exists before continuing where it left off earlier,
1287 :     and, thus, saves a lot of time.
1288 :    
1289 :     ----------------------------------------------------------------------
1290 : leunga 576 Name: Allen Leung
1291 :     Date: 00/03/10 02:20:00
1292 :     Tag: leunga-20000310-fix_x86_asm_ra
1293 :     Description:
1294 : dbm 570
1295 : leunga 576 More assembly output problems involving the indexed addressing mode
1296 :     on the x86 have been found and corrected. Thanks to Fermin Reig for the
1297 :     fix.
1298 :    
1299 :     The interface and implementation of the register allocator have been changed
1300 :     slightly to accommodate the possibility to skip the register allocation
1301 :     phases completely and go directly to memory allocation. This is needed
1302 :     for C-- use.
1303 :    
1304 : dbm 570 ----------------------------------------------------------------------
1305 : blume 572 Name: Matthias Blume
1306 : blume 575 Date: 00/03/09 10:23:53
1307 :     Tag: blume_main_v110p26p1_0
1308 :     Description:
1309 :    
1310 :     * Complete re-organization of library names. Many libraries have been
1311 :     consolidated so that they share the same path anchor. For example,
1312 :     all MLRISC-related libraries are anchored at MLRISC, most libraries that
1313 :     are SML/NJ-specific are under "smlnj". Notice that names like
1314 :     host-cmb.cm or host-compiler.cm no longer exist. See system/README
1315 :     for a complete description of the new naming scheme. Quick reference:
1316 :    
1317 :     host-cmb.cm -> smlnj/cmb.cm
1318 :     host-compiler.cm -> smlnj/compiler.cm
1319 :     full-cm.cm -> smlnj/cm.cm
1320 :     <arch>-<os>.cm -> smlnj/cmb/<arch>-<os>.cm
1321 :     <arch>-compiler.cm -> smlnj/compiler/<arch>.cm
1322 :    
1323 :     * Bug fixes in CM.
1324 :     - exceptions in user code are being passed through (i.e., reach top level)
1325 :     - more bugs in paranoia mode fixed
1326 :     - bug related to checking group owners fixed
1327 :    
1328 :     * New install.sh script that automagically fetches archive files:
1329 :     The new file config/srcarchiveurl must contain the URL of the
1330 :     (remote) directory that contains bin files (or other source archives).
1331 :     If install.sh does not find the archive locally, it tries to get
1332 :     it from that remote directory.
1333 :     This should simplify installation further: For machines that have
1334 :     access to the internet, just fetch <version>-config.tgz, unpack it,
1335 : monnier 659 edit config/targets, and go (run config/install.sh). The script will
1336 : blume 575 fetch everything else that it might need all by itself.
1337 :    
1338 :     For CVS users, this mechanism is not relevant for source archives, but
1339 :     it is convenient for getting new sets of binfiles.
1340 :    
1341 :     Archives should be tar files compressed with either gzip, compress, or
1342 :     bzip2. The script recognizes .tgz, .tar, tar.gz, tz, .tar.Z, and .tar.bz2.
1343 :    
1344 :     ----------------------------------------------------------------------
1345 :     Name: Matthias Blume
1346 : blume 572 Date: 2000/03/07 04:01:04
1347 :     Tag: blume_main_v110_26_2
1348 : dbm 570 Description:
1349 : blume 572 - size info in BOOTLIST
1350 :     * no fixed upper limits for number of bootfiles or length of
1351 :     bootfile names in runtime
1352 :     * falling back to old behavior if no BOOTLIST size info found
1353 :     - allocation size heuristics in .run-sml
1354 :     * tries to read cache size from /proc/cpuinfo (this is important for
1355 :     small-cache Celeron systems!)
1356 :     - install.sh robustified
1357 :     - CM manual updates
1358 :     - paranoid mode
1359 :     * no more CMB.deliver() (i.e., all done by CMB.make())
1360 :     * can re-use existing sml.boot.* files
1361 :     * init.cmi now treated as library
1362 :     * library stamps for consistency checks
1363 :     - sml.boot.<arch>-<os>/PIDMAP file
1364 :     * This file is read by the CM startup code. This is used to minimize
1365 :     the amount of dynamic state that needs to be stowed away for the
1366 :     purpose of sharing between interactive system and user code.
1367 :     - CM.Anchor.anchor instead of CM.Anchor.{set,cancel}
1368 :     * Upon request by Elsa. Anchors now controlled by get-set-pair
1369 :     like most other CM state variables.
1370 :     - Compiler.CMSA eliminated
1371 :     * No longer supported by CM anyway.
1372 :     - fixed bugs in pickler that kept biting Stefan
1373 :     * past refs to past refs (was caused by the possibility that
1374 :     ad-hoc sharing is more discriminating than hash-cons sharing)
1375 :     * integer overflow on LargeInt.minInt
1376 :     - ml-{lex,yacc} build scripts now use new mechanism
1377 :     for building standalone programs
1378 :     - fixed several gcc -Wall warnings that were caused by missing header
1379 :     files, missing initializations, etc., in runtime (not all warnings
1380 :     eliminated, though)

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