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[smlnj] Annotation of /sml/trunk/HISTORY
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Annotation of /sml/trunk/HISTORY

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1 : dbm 570 This is the HISTORY file for the Yale SML/NJ CVS repository.
2 :    
3 :     An entry should be made for _every_ commit to the repository.
4 :     The entries in this file will be used when creating the README
5 :     for new versions, so keep that in mind when writing the
6 :     description.
7 :    
8 :     The form of an entry should be:
9 :    
10 :     Name:
11 :     Date:
12 :     Tag: <post-commit CVS tag>
13 :     Description:
14 : george 824
15 : leunga 815 ----------------------------------------------------------------------
16 : blume 826 Name: Matthias Blume
17 : blume 854 Date: 2001/06/27 15:10:00 EDT
18 :     Tag: blume-20010627-concur
19 :     Description:
20 :    
21 :     Fixed a small bug in CM's handling of parallel compilation.
22 :     (You could observe the bug by Control-C-interrupting an ordinary
23 :     CMB.make or CM.stabilize and then attaching some compile servers.
24 :     The result was that all of a sudden the previously interrupted
25 :     compilation would continue on its own. This was because of
26 :     an over-optimization: CM did not bother to clean out certain queues
27 :     when no servers were attached "anyway", resulting in the contents
28 :     of these queues to grab control when new servers did get attached.)
29 :    
30 :     There is also another minor update to the CM manual.
31 :    
32 :     ----------------------------------------------------------------------
33 :     Name: Matthias Blume
34 : blume 853 Date: 2001/06/26 16:15:00 EDT
35 :     Tag: blume-20010626-cmdoc
36 :     Description:
37 :    
38 :     Minor typo fixed in CM manual (syntax diagram for libraries).
39 :    
40 :     ----------------------------------------------------------------------
41 :     Name: Matthias Blume
42 : blume 852 Date: 2001/06/25 22:55:00 EDT
43 :     Tag: blume-20010625-x86pc
44 :     Description:
45 :    
46 :     Fixed a nasty bug in the X86 assembly code that caused signal
47 :     handlers to fail (crash) randomly.
48 :    
49 :     ----------------------------------------------------------------------
50 :     Name: Matthias Blume
51 : blume 846 Date: 2001/06/25 12:05:00 EDT
52 :     Tag: blume-20010625-nlffigen
53 :     Description:
54 :    
55 :     This update fixes a number of minor bugs in ml-nlffigen as reported by
56 :     Nick Carter <nbc@andrew.cmu.edu>.
57 :    
58 :     1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
59 :     2. Default names for generated files are now derived from the name of
60 :     the C file *without its directory*. In particular, this causes generated
61 :     files to be placed locally even if the C file is in some system directory.
62 :     3. Default names for generated signatures and structures are also derived
63 :     from the C file name without its directory. This avoids silly things
64 :     like "structure GL/GL".
65 :     (Other silly names are still possible because ml-nlffigen does not do
66 : blume 847 a thorough check of whether generated names are legal ML identifiers.
67 :     When in doubt, use command line arguments to force particular names.)
68 : blume 846
69 :     ----------------------------------------------------------------------
70 :     Name: Matthias Blume
71 : blume 845 Date: 2001/06/21 12:25:00 EDT
72 :     Tag: blume-20010621-eXene
73 :     Description:
74 :    
75 :     eXene now compiles and (sort of) works again.
76 :    
77 :     The library name (for version > 110.33) is $/eXene.cm.
78 :    
79 :     I also added an new example in src/eXene/examples/nbody. See the
80 :     README file there for details.
81 :    
82 :     ----------------------------------------------------------------------
83 :     Name: Matthias Blume
84 : blume 844 Date: 2001/06/20 16:40:00 EDT
85 :     Tag: blume-20010620-cml
86 :     Description:
87 :    
88 :     CML now compiles and works again.
89 :    
90 :     Libraries (for version > 110.33):
91 :    
92 :     $cml/cml.cm Main CML library.
93 :     $cml/basis.cm CML's version of $/basis.cm.
94 :     $cml/cml-internal.cm Internal helper library.
95 :     $cml/core-cml.cm Internal helper library.
96 :     $cml-lib/trace-cml.cm Tracing facility.
97 :     $cml-lib/smlnj-lib.cm CML's version of $/smlnj-lib.cm
98 :    
99 :     The installer (config/install.sh) has been taught how to properly
100 :     install this stuff.
101 :    
102 :     ----------------------------------------------------------------------
103 :     Name: Matthias Blume
104 : blume 843 Date: 2001/06/19 17:55:00 EDT
105 :     Tag: blume-20010619-instantiate
106 :     Description:
107 :    
108 :     This un-breaks the fix for bug 1432.
109 :     (The bug was originally fixed in 110.9 but I broke it again some
110 :     time after that.)
111 :    
112 :     ----------------------------------------------------------------------
113 :     Name: Matthias Blume
114 : blume 842 Date: 2001/06/19 17:25:00 EDT
115 :     Tag: blume-20010619-signals
116 :     Description:
117 :    
118 :     This should (hopefully) fix the long-standing signal handling bug.
119 :     (The runtime system was constructing a continuation record with an
120 :     incorrect descriptor which would cause the GC to drop data on the floor...)
121 :    
122 :     ----------------------------------------------------------------------
123 :     Name: Matthias Blume
124 : blume 840 Date: 2001/06/15 15:05:00 EDT
125 : blume 841 Tag: blume-20010615-moresparc
126 :     Description:
127 :    
128 :     Here is a short late-hour update related to Sparc c-calls:
129 :    
130 :     -- made handling of double-word arguments a bit smarter
131 :    
132 :     -- instruction selection phase tries to collapse certain clumsily
133 :     constructed ML-Trees; typical example:
134 :    
135 :     ADD(ty,ADD(_,e,LI d1),LI d2) -> ADD(ty,e,LI(d1+d2))
136 :    
137 :     This currently has no further impact on SML/NJ since mlriscGen does
138 :     not seem to generate such patterns in the first place, and c-calls
139 :     (which did generate them in the beginning) has meanwhile been fixed
140 :     so as to avoid them as well.
141 :    
142 :     ----------------------------------------------------------------------
143 :     Name: Matthias Blume
144 :     Date: 2001/06/15 15:05:00 EDT
145 : blume 840 Tag: blume-20010615-sparc
146 :     Description:
147 :    
148 :     The purpose of this update is to provide an implementation of NLFFI
149 :     on Sparc machines.
150 :    
151 :     Here are the changes in detail:
152 :    
153 :     * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
154 :     the Sparc implementation of the c-calls API.
155 :     * The Sparc backend of SML/NJ has been modified to uniformely use %fp
156 :     for accessing the ML frame. Thus, we have a real frame pointer and
157 :     can freely modify %sp without need for an omit-frame-ptr phase.
158 :     The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
159 :     this case.
160 :     * ml-nlffigen has been taught to produce code for different architectures
161 :     and calling conventions.
162 :     * In a way similar to what was done in the x86 case, the Sparc
163 :     backend uses its own specific extension to mltree. (For example,
164 :     it needs to be able to generate UNIMP instructions which are part
165 :     of the calling convention.)
166 :     * ml-nlffi-lib was reorganized to make it more modular (in particular,
167 :     to make it easier to plug in new machine- and os-dependent parts).
168 :    
169 :     There are some other fairly unrelated bug fixes and cleanups as well:
170 :    
171 :     * I further hacked the .cm files for MLRISC tools (like MDLGen) so
172 :     that they properly share their libraries with existing SML/NJ libraries.
173 :     * I fixed a minor cosmetic bug in CM, supressing certain spurious
174 :     follow-up error messages.
175 :     * Updates to CM/CMB documentation.
176 :    
177 :     TODO items:
178 :    
179 :     * MLRISC should use a different register as its asmTemp on the Sparc.
180 :     (The current %o2 is a really bad choice because it is part of the
181 :     calling conventions, so things might interfere in unexpected ways.)
182 :    
183 :     ----------------------------------------------------------------------
184 :     Name: Matthias Blume
185 : blume 839 Date: 2001/06/07
186 :     Tag: blume-20010607-calls
187 :     Description:
188 :    
189 :     A number of internal changes related to C calls and calling conventions:
190 :    
191 :     1. ML-Tree CALL statements now carry a "pops" field. It indicates the
192 :     number of bytes popped implicitly (by the callee). In most cases
193 :     this field is 0 but on x86/win32 it is some non-zero value. This
194 :     is information provided for the benefit of the "omit-frameptr" pass.
195 :     2. The CALL instruction on the x86 carries a similar "pops" field.
196 :     The instruction selection phase copies its value from the ML-Tree
197 :     CALL statement.
198 :     3. On all other architectures, the instruction selection phase checks
199 :     whether "pops=0" and complains if not.
200 :     4. The c-calls implementation for x86 now accepts two calling conventions:
201 :     "ccall" and "stdcall". When "ccall" is selected, the caller cleans
202 :     up after the call and pops is set to 0. For "stdcall", the caller
203 :     does nothing, leaving the cleanup to the callee; pops is set to
204 :     the number of bytes that were pushed onto the stack.
205 :     5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
206 :     distinguish between "ccall" and "stdcall".
207 :     6. The UNIMP instruction has been added to the supported Sparc instruction
208 :     set. (This is needed for implementing the official C calling convention
209 :     on this architecture.)
210 :     7. I fixed some of the .cm files under src/MLRISC/Tools to make them
211 :     work with the latest CM.
212 :    
213 :     ----------------------------------------------------------------------
214 :     Name: Matthias Blume
215 : blume 838 Date: 2001/06/05 15:10:00 EDT
216 :     Tag: blume-20010605-cm-index
217 :     Description:
218 :    
219 :     0. The "lambdasplit" parameter for class "sml" in CM has been documented.
220 :    
221 :     1. CM can now generate "index files". These are human-readable files
222 :     that list on a per-.cm-file basis each toplevel symbol defined or
223 :     imported. The location of the index file for
224 :     <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
225 :     To enable index-file generation, set CM.Control.generate_index to true
226 :     or export an environment-symbol: export CM_GENERATE_INDEX=true.
227 :    
228 :     The CM manual has been updated accordingly.
229 :    
230 :     2. I made some slight modifications to the c-calls API in MLRISC.
231 :    
232 :     a) There is now a callback to support saving/restoring of
233 :     dedicated but caller-save registers around the actual call
234 :     instruction.
235 :     b) One can optionally specify a comment-annotation for the
236 :     call instruction.
237 :    
238 :     3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
239 :     (For example, the comment annotation shows the C prototype of
240 :     the function being called.)
241 :    
242 :     ----------------------------------------------------------------------
243 :     Name: Matthias Blume
244 : blume 837 Date: 2001/06/01 13:30:00 EDT
245 :     Tag: blume-20010601-nlffi-cleanup
246 :     Description:
247 :    
248 :     This is mostly a cleanup of MLFFI stuff:
249 :    
250 :     - some signature files have been put into a more exposed place
251 :     - the ugly 'f type parameter is gone (simplifies types tremendously!)
252 :     - ml-nlffigen changed accordingly
253 :     - tutorial updated
254 :    
255 :     Other changes:
256 :    
257 :     - author's affiliation in CM manual(s) updated
258 :     - some more recognized keywords added to Allen's sml.sty
259 :    
260 :     ----------------------------------------------------------------------
261 :     Name: Matthias Blume
262 : blume 836 Date: 2001/05/25 15:30:00 EDT
263 :     Tag: blume-20010525-iptr
264 :     Description:
265 :    
266 :     - put the official 110.33-README (as it appears on the ftp server) under
267 :     CVS
268 :     - fixed a small bug related to incomplete pointer types in
269 :     ml-nlffigen
270 :     - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
271 :     (it does not need the 'f type parameter)
272 :    
273 :     ----------------------------------------------------------------------
274 :     Name: Matthias Blume
275 : blume 834 Date: 2001/05/23 14:30:00 EDT
276 :     Tag: Release_110_33
277 :     Description:
278 :    
279 :     New version number (110.33). New bootfiles.
280 :    
281 :     ----------------------------------------------------------------------
282 :     Name: Matthias Blume
283 : blume 833 Date: 2001/05/22 18:06:00 EDT
284 :     Tag: blume-20010522-targets
285 :     Description:
286 :    
287 :     Made install.sh use file config/targets.customized if it exists, falling
288 :     back to config/targets if it doesn't. This way one can have a customized
289 :     version of the targets file without touching the "real thing", thus
290 :     eliminating the constant fear of accidentally checking something bogus
291 :     back into the CVS repository... (File config/targets.customized must
292 :     not be added to the repository!)
293 :    
294 :     ----------------------------------------------------------------------
295 :     Name: Matthias Blume
296 : blume 832 Date: 2001/05/22 16:30:00 EDT
297 :     Tag: blume-20010522-minitut
298 :     Description:
299 :    
300 :     1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
301 :     struct returns.
302 :     2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt. This is some very
303 :     incomplete, preliminary documentation for NLFFI.
304 :    
305 :     ----------------------------------------------------------------------
306 :     Name: Matthias Blume
307 : blume 829 Date: 2001/05/14 11:30:00 EDT
308 :     Tag: blume-20010514-script
309 :     Description:
310 :    
311 :     Some bugs in install script fixed.
312 :    
313 :     In addition to that I also made a slight change to the NLFFI API:
314 :     Functors generated by ml-nlffigen now take the dynamic library as a
315 :     straight functor argument, not as a suspended one. (The original
316 :     functor code used to force the suspension right away anyway, so there
317 :     was nothing gained by this complication of the interface.)
318 :    
319 :     ----------------------------------------------------------------------
320 :     Name: Matthias Blume
321 : blume 828 Date: 2001/05/11 14:35:00 EDT
322 :     Tag: blume-20010511-ml-nlffi
323 :     Description:
324 :    
325 :     I finally took the plunge and added my new FFI code to the main
326 :     repository. For x86-linux it is now ready for prime-time.
327 :    
328 :     There are two new subdirectories of "src":
329 :    
330 :     - ml-nlffi-lib:
331 :     The utility library for programs using the FFI interface.
332 :     Here is the implementation of $/c.cm and its associated low-level
333 :     partners $/c-int.cm and $/memory.cm.
334 :     - ml-nlffigen:
335 :     A stand-alone program for generating ML glue code from C source
336 :     code.
337 :    
338 :     Building ml-nlffigen requires $/ckit-lib.cm.
339 :    
340 :     The config/install.sh script has been updates to do the Right Thing
341 :     (hopefully).
342 :    
343 :     Notice that the source tree for the C-Kit will not be put under "src"
344 :     but directly under the installation root directory. (This is the
345 :     structure that currently exists on the CVS server when you check out
346 :     module "sml".) Fortunately, config/install.sh knows about this oddity.
347 :    
348 :     Bugs: No documentation yet.
349 :    
350 :     ----------------------------------------------------------------------
351 :     Name: Matthias Blume
352 : blume 826 Date: 2001/05/09 16:35:00 EDT
353 :     Tag: blume-20010509-cpscontract
354 :     Description:
355 :    
356 :     Fixed a bug in the accounting code in cpsopt/contract.sml. (The
357 :     wrapper/unwrapper elimination did not decrement usage counts and some
358 :     dead variables got overlooked by the dead-up logic.)
359 :    
360 :     ----------------------------------------------------------------------
361 : george 824 Name: Lal George
362 :     Date: 2001/05/08 17:26:09 EDT
363 :     Tag: george-20010508-omit-frameptr
364 :     Description:
365 :    
366 :     Changes to implement the omit-frame-pointer optimization to support
367 :     raw C calls. For now, there is only support on the Intel x86, but
368 :     other architectures will follow as more experience is gained with this.
369 :    
370 :    
371 :     ----------------------------------------------------------------------
372 : blume 818 Name: Matthias Blume
373 : blume 819 Date: 2001/05/07 14:40:00 EDT
374 :     Tag: blume-20010507-proxies
375 :     Description:
376 :    
377 :     I made into "proxy libraries" all libraries that qualify for such a
378 :     change. (A qualifying library is a library that has another library or
379 :     groups as its sole member and repeats that member's export list
380 :     verbatim. A proxy library avoids this repetition by omitting its export
381 :     list, effectively inheriting the list that its (only) member exports.
382 :     See the CM manual for more explanation.)
383 :     The main effect is that explicit export lists for these libraries
384 :     do not have to be kepts in sync, making maintenance a bit easier.
385 :    
386 :     I also added copyright notices to many .cm-files.
387 :    
388 :     Last but not least, I made a new set of bootfiles.
389 :    
390 :     ----------------------------------------------------------------------
391 :     Name: Matthias Blume
392 : blume 818 Date: 2001/05/04 17:00:00 EDT
393 :     Tag: blume-20010504-cm-lsplit
394 :     Description:
395 :    
396 :     0. John merged pending changes to $/smlnj-lib.cm
397 :    
398 :     1. Allen's previous change accidentally backed out of one of Lal's
399 :     earlier changes. I undid this mistake (re-introducing Lal's change).
400 :    
401 :     2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
402 :     within the compiler where applicable. There is some code simplification
403 :     because of that.
404 :    
405 :     3. The "split" phase (in FLINT) is now part of the default list of phases.
406 :     Compiler.Control.LambdaSplitting.* can be used to globally control the
407 :     lambda-splitting (cross-module-inlining) engine. In addition to that,
408 :     it can now also be controlled on a per-source basis: CM has been taught
409 :     a new tool parameter applicable to ML source files.
410 :    
411 :     - To turn lambda-splitting off completely:
412 :     local open Compiler.Control.LambdaSplitting in
413 :     val _ = set Off
414 :     end
415 :     - To make "no lambda-splitting" the global default (but allow per-source
416 :     overriding); this is the initial setting:
417 :     local open Compiler.Control.LambdaSplitting in
418 :     val _ = set (Default NONE)
419 :     end
420 :     - To make "lambda-splitting with aggressiveness a" the global default
421 :     (and allow per-source overriding):
422 :     local open Compiler.Control.LambdaSplitting in
423 :     val _ = set (Default (SOME a))
424 :     end
425 :    
426 :     - To turn lambda-splitting off for a given ML souce file (say: a.sml)
427 :     write (in the respective .cm-file):
428 :     a.sml (lambdasplitting:off)
429 :     - To turn lambda-splitting for a.sml on with minimal aggressiveness:
430 :     a.sml (lambdasplitting:on)
431 :     - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
432 :     <a> is a decimal non-negative integer):
433 :     a.sml (lambdasplitting:<a>)
434 :     - To turn lambda-splitting for a.sml on with maximal aggressiveness:
435 :     a.sml (lambdasplitting:infinity)
436 :     - To use the global default for a.sml:
437 :     a.sml (lambdasplitting:default)
438 :     or simply
439 :     a.sml
440 :    
441 :     ----------------------------------------------------------------------
442 : leunga 815 Name: Allen Leung
443 :     Date: 2001/05/04 01:57:00 EDT
444 :     Tag: leunga-20010504-sync
445 :     Description:
446 : leunga 788
447 : leunga 815 MLRISC features.
448 :    
449 :     1. Fix to CMPXCHG instructions.
450 :     2. Changed RA interface to allow annotations in callbacks.
451 :     3. Added a new method to the stream interface to allow annotations updates.
452 :    
453 : george 749 ----------------------------------------------------------------------
454 : blume 812 Name: Matthias Blume
455 : blume 814 Date: 2001/05/01 11:45:00 EDT
456 :     Tag: blume-20010501-pcedittmp
457 :     Description:
458 :    
459 :     Changed install.sh to use the current working directory instead of
460 :     /usr/tmp for a temporary file (pcedittmp). The previous choice
461 :     of /usr/tmp caused trouble with MacOS X because of file premission
462 :     problems.
463 :    
464 :     ----------------------------------------------------------------------
465 :     Name: Matthias Blume
466 : blume 812 Date: 2001/04/20 11:10:00 EDT
467 :     Tag: blume-20010420-inMLflag
468 :     Description:
469 :    
470 :     - added vp_limitPtrMask to vproc-state.h
471 :     (for use by the raw-C-calls mechanism to implement proper interrupt
472 :     handling)
473 :     - made the ML compiler aware of various data-structure offsets so it
474 :     can generate code for accessing the vp_inML flag and vp_limitPtrMask
475 :     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
476 :     raw C-calls
477 :    
478 :     ----------------------------------------------------------------------
479 : george 810 Name: Lal George
480 :     Date: 2001/04/20 09:15:28 EDT
481 :     Tag: george-20010420-macosX
482 :     Description:
483 :    
484 :     - Changes to port to Mac OS X; Darwin.
485 :    
486 :     - In the process I found that sqrt was broken on the PPC, because the
487 :     fsqrt instruction is not implemented.
488 :    
489 :     ----------------------------------------------------------------------
490 : blume 799 Name: Matthias Blume
491 : blume 808 Date: 2001/04/18 12:45:00 EDT
492 :     Tag: blume-20010418-ccalls
493 :     Description:
494 :    
495 :     - fixed two off-by-4 errors in the x86-specific c-calls implementation
496 :     (this bug prevented structure arguments containing pointers from being
497 :     passed correctly)
498 :     - changed the raw-C-call code in mlriscGen.sml in such a way that
499 :     structure arguments are represented as a pointer to the beginning
500 :     of the structure (instead of having a series of synthesized arguments,
501 :     one for each structure member)
502 :    
503 :     - made makeml script's verbosity level configurable via environment
504 :     variable (MAKEML_VERBOSITY)
505 :    
506 : blume 813 - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
507 : blume 808 in rawmem-x86.sml; we are now using the real thing
508 :    
509 :     ----------------------------------------------------------------------
510 :     Name: Matthias Blume
511 : blume 806 Date: 2001/03/22 16:25:00 EST
512 :     Tag: blume-20010322-bootfiles
513 :     Description:
514 :    
515 :     Created a new set of bootfiles (for your automatic installation convenience).
516 :    
517 :     ----------------------------------------------------------------------
518 :     Name: Matthias Blume
519 : blume 805 Date: 2001/03/22 15:10:00 EST
520 :     Tag: blume-20010322-rawmem-parcm
521 :     Description:
522 :    
523 :     1. All "raw memory access" primitives for the new FFI are implemented now
524 :     (at least on the x86).
525 :     2. Some further cleanup of CM's parallel make mechanism.
526 :    
527 :     ----------------------------------------------------------------------
528 :     Name: Matthias Blume
529 : blume 801 Date: 2001/03/19 17:53:00 EST
530 :     Tag: blume-20010319-parallel
531 :     Description:
532 :    
533 :     Parallel make (using compile servers) now works again.
534 :    
535 :     To this end, CM.stabilize and CMB.make have been modified to work in
536 :     two passes when compile servers are attached:
537 :     1. Compile everything, do not perform stabilization; this pass
538 :     uses compile servers
539 :     2. Stabilize everything; this pass does not use compile servers
540 :     If there are no compile servers, the two passes are combined into one
541 :     (as before). Splitting the passes increases the inherent parallelism
542 :     in the dependency graph because the entire graph including all
543 :     libraries is available at the same time. This, in turn, improves
544 :     server utilization. The downside is that the master process will
545 :     have to do some extra work after compilation is done (because for
546 :     technical reasons it must re-read all the binfiles during stabilization).
547 :    
548 :     ----------------------------------------------------------------------
549 :     Name: Matthias Blume
550 : blume 800 Date: 2001/03/16 12:22:00 EST
551 :     Tag: blume-20010316-bootfiles
552 :     Description:
553 :    
554 :     Created a new set of bootfiles (for your automatic installation convenience).
555 :    
556 :     ----------------------------------------------------------------------
557 :     Name: Matthias Blume
558 : blume 799 Date: 2001/03/16 11:00:00 EST
559 :     Tag: blume-20010316-MLTREE-fixup
560 :     Description:
561 :    
562 :     This is a minor fixup for an (untagged) earlier commit by Allen.
563 :     (A file was missing).
564 :    
565 :     ----------------------------------------------------------------------
566 : leunga 788 Name: Allen Leung
567 : leunga 796 Date: Mon Mar 5 18:54:57 EST 2001
568 :     Tag: leunga-20010305-cut-support
569 :    
570 :     1. New support for alternative control-flow in MLTREE.
571 :     Currently we support
572 :    
573 :     FLOW_TO(CALL ...., [k1,...,kn])
574 :    
575 :     This is needed for 'cuts to' in C-- and try/handle-like constructs
576 :     in Moby
577 :    
578 :     New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
579 :    
580 :     2. Register Allocator
581 :    
582 :     Changes in interface [from Fermin, John]
583 :    
584 :     3. Alpha 8-bit SLL support [Fermin]
585 :    
586 :     4. All architectures
587 :    
588 :     A new module (ClusterExpandCopies) for expanding parallel copies.
589 :    
590 :     ----------------------------------------------------------------------
591 :     Name: Allen Leung
592 : leunga 788 Date: 2001/02/27 23:07:00 EST
593 :     Tag: leunga-20010227-minor-stuff
594 :    
595 :     1. Alpha bug fix for CMOVNE
596 :     2. Handle mltree COND(..,FCMP ...,...)
597 :     3. Bug fix in simplifier
598 :    
599 :     ----------------------------------------------------------------------
600 : blume 777 Name: Matthias Blume
601 : blume 781 Date: 2001/01/30 17:50:00 EST
602 :     Tag: blume-20010130-sync
603 :     Description:
604 :    
605 :     This is just a minor update to sync my devel branch with the main brach.
606 :     The only visible change is the addition of some README files.
607 :    
608 :     ----------------------------------------------------------------------
609 :     Name: Matthias Blume
610 : blume 778 Date: 2001/01/12 23:30:00 JST
611 :     Tag: blume-20010112-bootfiles
612 :     Description:
613 :    
614 :     Made a new set of bootfiles that goes with the current state of the
615 :     repository.
616 :    
617 :     ----------------------------------------------------------------------
618 :     Name: Matthias Blume
619 : blume 777 Date: 2001/01/12 21:20:00 JST
620 :     Tag: blume-20010112-sync
621 :     Description:
622 :    
623 :     I am just flushing out some minor changes that had accumulated in
624 :     my private branch in order to sync with the main tree. (This is
625 :     mainly because I had CVS trouble when trying to merge _into_ my
626 :     private branch.)
627 :    
628 :     Most people should be completely unaffected by this.
629 :    
630 :     ----------------------------------------------------------------------
631 : leunga 775 Name: Allen Leung
632 :     Date: Thu Jan 11 21:03:00 EST 2001
633 :     Tag: leunga-20010111-labexp=mltree
634 :     Description:
635 :    
636 :     1. Removed the type LabelExp and replace it by MLTree.
637 :     2. Rewritten mltree-simplify with the pattern matcher tool.
638 :     3. There were some bugs in alpha code generator which would break
639 :     64-bit code generation.
640 :     4. Redo the tools to generate code with the
641 :     5. The CM files in MLRISC (and in src/system/smlnj/MLRISC)
642 :     are now generated by perl scripts.
643 :    
644 :     ----------------------------------------------------------------------
645 : blume 771 Name: Matthias Blume
646 : blume 774 Date: 2001/01/10 21:55:00 JST
647 :     Tag: blume-20010110-rcc
648 :     Description:
649 :    
650 :     The RCC stuff now seems to work (but only on the x86).
651 :     This required hacking of the c-calls interface (and -implementation) in
652 :     MLRISC.
653 :    
654 :     Normal compiler users should be unaffected.
655 :    
656 :     ----------------------------------------------------------------------
657 :     Name: Matthias Blume
658 : blume 773 Date: 2001/01/09 01:20:00 JST
659 :     Tag: blume-20010109-rcc
660 :     Description:
661 :    
662 :     This is a fairly big patch, flushing out a large number of pending
663 :     changes that I made to my development copy over the last couple of days.
664 :    
665 :     Of practical relevance at this moment is a workaround for a pickling
666 :     bug that Allen ran into the other day. The cause of the bug itself is
667 :     still unknown and it might be hard to fix it properly, but the
668 :     workaround has some merits of its own (namely somewhat reducing pickling
669 :     overhead for certain libraries). Therefore, I think this solution should
670 :     be satisfactory at this time.
671 :    
672 :     The rest of the changes (i.e., the vast majority) has to do with my
673 :     ongoing efforts of providing direct support for C function calls from
674 :     ML. At the moment there is a new primop "RAW_CCALL", typing magic
675 :     in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
676 :     case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
677 :     translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
678 :     handle RCC.
679 :    
680 :     The last part (the changes to mlriscGen.sml) are still known to be
681 :     wrong on the x86 and not implemented on all other architectures. But
682 :     the infrastructure is in place. I had to change a few functor
683 :     signatures in the backend to be able to route the CCalls interface
684 :     from MLRISC there, and I had to specialize the mltree type (on the
685 :     x86) to include the necessary extensions. (The extensions themselves
686 :     were already there and redy to go in MLRISC/x86).
687 :    
688 :     Everything should be very happy as soon as someone helps me with
689 :     mlriscGen.sml...
690 :    
691 :     In any case, nothing of this should matter to anyone as long as the
692 :     new primop is not being used (which is going to be the case unless you
693 :     find it where I hid it :). The rest of the compiler is completely
694 :     unaffected.
695 :    
696 :     ----------------------------------------------------------------------
697 :     Name: Matthias Blume
698 : blume 772 Date: 2001/01/05 00:30:00 JST
699 :     Tag: blume-20010105-primops
700 :     Description:
701 :    
702 :     Added some experimental support for work that I am doing right now.
703 :     These changes mostly concern added primops, but there is also a new
704 :     experimental C library in the runtime system (but currently not enabled
705 :     anywhere except on Linux/X86).
706 :    
707 :     In the course of adding primops (and playing with them), I discovered that
708 :     Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
709 :     broken. (Zhong was very right he labeled this stuff as "major gross hack".)
710 :     To recover, I made type information in INL_PRIM mandatory and changed
711 :     prim.sml as well as built-in.sml accordingly. The InLine structure now
712 :     has complete, correct type information (i.e., no bottom types).
713 :    
714 :     Since all these changes mean that we need new binfiles, I also bumped the
715 :     version number to 110.32.1.
716 :    
717 :     ----------------------------------------------------------------------
718 :     Name: Matthias Blume
719 : blume 771 Date: 2000/12/30 22:10:00 JST
720 :     Tag: blume-20001230-various
721 :     Description:
722 :    
723 :     Added proxy libraries for MLRISC and let MLRISC libraries refer
724 :     to each other using path anchors. (See CM manual for explanation.)
725 :    
726 :     Updated CM documentation.
727 :    
728 :     Fixed some bugs in CM.
729 :    
730 :     Implemented "proxy" libraries (= syntactic sugar for CM).
731 :    
732 :     Added "-quiet" option to makeml and changed runtime system accordingly.
733 :    
734 :     Added cleanup handler for exportML to reset timers and compiler stats.
735 :    
736 :     ----------------------------------------------------------------------
737 : george 761 Name: Lal George
738 :     Date: 2000/12/22 22:22:58 EST 2000
739 :     Tag: Release_110_32
740 :     Description:
741 :    
742 :     Infinite precision used throughout MLRISC.
743 :     see MLRISC/mltree/machine-int.sig
744 :    
745 :     ----------------------------------------------------------------------
746 : blume 756 Name: Matthias Blume
747 : blume 760 Date: 2000/12/22 23:16:00 JST
748 :     Tag: blume-20001222-warn
749 :     Description:
750 : blume 759
751 : blume 760 Corrected wording and formatting of some CM warning message which I
752 :     broke in my previous patch.
753 : blume 759
754 :     ----------------------------------------------------------------------
755 :     Name: Matthias Blume
756 : blume 763 Date: 2000/12/22 21:20:00 JST
757 :     Tag: blume-20001222-anchorenv
758 :     Description:
759 :    
760 :     Fixed CM's handling of anchor environments in connection with CMB.make.
761 :    
762 :     ----------------------------------------------------------------------
763 :     Name: Matthias Blume
764 : blume 758 Date: 2000/12/22 13:15:00 JST
765 :     Tag: blume-20001222-cleanup
766 :     Description:
767 :    
768 :     Removed src/cm/ffi which does not (and did not) belong here.
769 :    
770 :     ----------------------------------------------------------------------
771 :     Name: Matthias Blume
772 : blume 757 Date: 2000/12/21 23:55:00 JST
773 :     Tag: blume-20001221-exn
774 :     Description:
775 :    
776 :     Probably most important: CM no longer silently swallows all exceptions
777 :     in the compiler.
778 :     Plus: some other minor CM changes. For example, CM now reports some
779 :     sizes for generated binfiles (code, data, envpickle, lambdapickle).
780 :    
781 :     ----------------------------------------------------------------------
782 :     Name: Matthias Blume
783 : blume 756 Date: 2000/12/15 00:01:05 JST
784 :     Tag: blume-20001215-dirtool
785 :     Description:
786 :    
787 :     - "dir" tool added.
788 :     - improvements and cleanup to Tools structure
789 :     - documentation updates
790 :    
791 :     ----------------------------------------------------------------------
792 : leunga 752 Name: Allen Leung
793 : leunga 755 Date: Thu Dec 14 03:45:24 EST 2000
794 :     Description:
795 :     Tag: leunga-20001214-int-inf
796 :     Description:
797 :    
798 :     In IntInf, added these standard functions, which are missing from our
799 :     implementation:
800 :    
801 :     andb : int * int -> int
802 :     xorb : int * int -> int
803 :     orb : int * int -> int
804 :     notb : int -> int
805 :     << : int * word -> int
806 :     ~>> : int * word -> int
807 :    
808 :     Not tested, I hope they are correct.
809 :    
810 :     ----------------------------------------------------------------------
811 :     Name: Allen Leung
812 : leunga 752 Date: Fri Dec 8 19:23:26 EST 2000
813 :     Description:
814 :     Tag: leunga-20001208-nowhere
815 :     Description:
816 :    
817 :     Slight improvements to the 'nowhere' tool to handle OR-patterns,
818 :     to generate better error messages etc. Plus a brief manual.
819 :    
820 :     ----------------------------------------------------------------------
821 : george 749 Name: Lal George
822 :     Date: 2000/12/08 09:54:02 EST 2000
823 :     Tag: Release_110_31
824 :     Description:
825 : george 705
826 : george 749 - Version 110.31
827 : leunga 591 ----------------------------------------------------------------------
828 : leunga 744 Name: Allen Leung
829 :     Date: Thu Dec 7 22:01:04 EST 2000
830 :     Tag: leunga-20001207-cell-monster-hack
831 :     Description:
832 :    
833 :     Major MLRISC internal changes. Affect all clients.
834 :     Summary:
835 :    
836 :     1. Type CELLS.cell = int is now replaced by a datatype.
837 :     As a result, the old regmap is now gone. Almost all interfaces
838 :     in MLRISC change as a consequence.
839 :    
840 :     2. A new brand version of machine description tool (v3.0) that generates
841 :     modules expecting the new interface. The old version is removed.
842 :    
843 :     3. The RA interface has been further abstracted into two new functors.
844 :     RISC_RA and X86RA. These functors have much simpler interfaces.
845 :     [See also directory MLRISC/demo.]
846 :    
847 :     4. Some other new source->source code generation tools are available:
848 :    
849 :     a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
850 :     b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
851 :     I use this tool to generate the peephole optimizers---with the new
852 :     cell type changes, peephole rules are becoming difficult to write
853 :     without conditional pattern matching.
854 :    
855 :     5. More Intmap -> IntHashTable change. Previous changes by Matthias didn't
856 :     cover the entire MLRISC source tree so many things broke.
857 :    
858 :     6. CM files have been moved to the subdirectory MLRISC/cm.
859 :     They are moved because there are a lot of them and they clutter up the
860 :     root dir.
861 :    
862 :     7. More detailed documentation to come...
863 :    
864 :     NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
865 :     a makeml -rebuild first. This is because of other other
866 :     changes that Matthias has made (see below).
867 :    
868 :    
869 :     ----------------------------------------------------------------------
870 : blume 733 Name: Matthias Blume
871 : blume 742 Date: 2000/11/30 23:12:00 JST
872 :     Tag: blume-20001130-filereorg
873 :     Description:
874 :    
875 :     Some manual updates and some file reorganizations in CM.
876 :    
877 :     ----------------------------------------------------------------------
878 :     Name: Matthias Blume
879 : blume 737 Date: 2000/11/24 17:45:00 JST
880 :     Tag: blume-20001124-link
881 :     Description:
882 :    
883 :     Drastically improved link traversal code for the case that the dynamic
884 :     value was already loaded at bootstrap time. As a result, CM and CMB
885 :     now both load blazingly fast -- even on a very slow machine. Also,
886 :     memory consumption has been further reduced by this.
887 :    
888 :     Warning: The format of the PIDMAP file has changed. THerefore, to
889 :     bootstrap you have to do this:
890 :    
891 :     1. Run CMB.make
892 :     2. Make a symbolic link for the boot directory:
893 :     ln -s sml.boot.ARCH-OS xxx
894 :     3. "Rebuild" the boot directory:
895 :     ./makeml -boot xxx -rebuild sml ; rm xxx
896 :     4. Boot normally:
897 :     ./makeml
898 :    
899 :     ----------------------------------------------------------------------
900 :     Name: Matthias Blume
901 : blume 735 Date: 2000/11/21 21:20:00 JST
902 :     Tag: blume-20001121-tools
903 :     Description:
904 :    
905 :     Continued hacking on autoloading problem -- with success this time.
906 :     Also changed tool-plugin mechanism. See new CM manual.
907 :    
908 :     ----------------------------------------------------------------------
909 :     Name: Matthias Blume
910 : blume 734 Date: 2000/11/19 14:30:00 JST
911 :     Tag: blume-20001119-autoload
912 :     Description:
913 :    
914 :     Some hacking to make autoloading faster. Success for CMB, no success
915 :     so far for CM. There is a reduced structure CM' that autoloads faster.
916 :     (This is a temporary, non-documented hack to be eliminated again when
917 :     the general problem is solved.)
918 :    
919 :     ----------------------------------------------------------------------
920 :     Name: Matthias Blume
921 : blume 733 Date: 2000/11/17 14:10:00 JST
922 :     Tag: blume-20001117-pickle-lib
923 :     Description:
924 :    
925 :     1. Eliminated comp-lib.cm
926 :     2. Made pickle-lib.cm
927 :     3. Eliminated all uses of intset.sml (from comp-lib.cm)
928 :     4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
929 :     equivalent constructs from smlnj-lib.cm (INtHashTable).
930 :     5. Point 4. also goes for those uses of intmap.* in MLRISC.
931 :     Duplicated intmap modules thrown out.
932 :     6. Hunted down all duplicated SCC code and replaced it with
933 :     equivalent stuff (GraphSCCFn from smlnj-lib.cm).
934 :     7. Rewrote Feedback module.
935 :     8. Moved sortedlist.sml into viscomp-lib.cm. Eventually it
936 :     should be thrown out and equivalent modules from smlnj-lib.cm
937 :     should be used (IntRedBlackSet, IntListSet, ...).
938 :    
939 :     Confirmed that compiler compiles to fixpoint.
940 :    
941 :     ----------------------------------------------------------------------
942 : leunga 731 Name: Allen Leung
943 :     Date: 2000/11/10 18:00:00
944 :     Tag: leunga-20001110-new-x86-fp
945 :    
946 :     A new x86 floating point code generator has been added.
947 :     By default this is turned off. To turn this on, do:
948 :    
949 :     CM.autoload "$smlnj/compiler.cm";
950 :     Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
951 :    
952 :     Changes:
953 :    
954 :     1. Changed FTAN to FPTAN so that the assembly output is correct.
955 :     2. Changed the extension callback for FTANGENT to generate:
956 :    
957 :     fptan
958 :     fstp %st(0)
959 :     instead of
960 :     fptan
961 :     fstpl ftempmem
962 :    
963 :     3. Numerous assembly fixes for x86.
964 :    
965 :     5. Cleaned up the machine code output module x86/x86MC.sml and added
966 :     support for a whole bunch of instructions and addressing modes:
967 :    
968 :     fadd/fsub/fsubr/fmul/fdiv/fdivr %st, %st(n)
969 :     faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp %st, %st(n)
970 :     fadd/fsub/fsubr/fmul/fdiv/fdivr %st(n), %st
971 :     fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
972 :     fxch %st(n)
973 :     fld %st(n)
974 :     fst %st(n)
975 :     fst mem
976 :     fstp %st(n)
977 :     fucom %st(n)
978 :     fucomp %st(n)
979 :    
980 :     All these are now generated when the fast fp mode is turned on.
981 :    
982 :     6. Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
983 :    
984 :     ----------------------------------------------------------------------
985 : blume 729 Name: Matthias Blume
986 :     Date: 2000/11/09 11:20:00 JST
987 :     Tag: blume-20001109-scc
988 :     Description:
989 :    
990 :     Eliminated some code duplication:
991 :    
992 :     1. Added "where" clause to GraphSCCFn in SML/NJ Library.
993 :     (Otherwise the functor is useless.)
994 :     2. Used GraphSCCFn where SCCUtilFun was used previously.
995 :     3. Got rid of SCCUtilFun (in comp-lib.cm).
996 :    
997 :     ----------------------------------------------------------------------
998 : george 721 Name: Lal George
999 :     Date: 2000/11/06 09:02:21 EST 2000
1000 :     Tag: Release_110_30
1001 :     Description:
1002 :    
1003 :     - Version 110.30
1004 :     ----------------------------------------------------------------------
1005 : blume 715 Name: Matthias Blume
1006 : blume 716 Date: 2000/11/04 14:45:00
1007 :     Tag: blume-20001104-mlbuild
1008 :     Description:
1009 :    
1010 :     - Made ml-build faster on startup.
1011 :     - Documentation fixes.
1012 :    
1013 :     ----------------------------------------------------------------------
1014 :     Name: Matthias Blume
1015 : blume 715 Date: 2000/11/02 17:00:00 JST
1016 :     Tag: blume-20001102-condcomp
1017 :     Description:
1018 :    
1019 :     - Small tweaks to pickler -- new BOOTFILES!
1020 :     - Version bumped to 110.29.2.
1021 :     - Added conditional compilation facility to init.cmi (see comment there).
1022 :     ----------------------------------------------------------------------
1023 : leunga 713 Name: Allen Leung
1024 :     Date: 2000/10/23 19:31:00
1025 :     Tag: leunga-20001023-demo-ra
1026 :    
1027 :     1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
1028 :     2. Test programs for the graph library updated
1029 :     3. Some new MLRISC demo programs added
1030 :    
1031 :     ----------------------------------------------------------------------
1032 : blume 710 Name: Matthias Blume
1033 : blume 711 Date: 2000/08/31 22:15:00 JST
1034 :     Tag: blume-20001017-errmsg
1035 :     Description:
1036 :    
1037 :     More error message grief: Where there used to be no messages, there
1038 :     now were some that had bogus error regions. Fixed.
1039 :    
1040 :     ----------------------------------------------------------------------
1041 :     Name: Matthias Blume
1042 : blume 710 Date: 2000/08/31 17:30:00 JST
1043 :     Tag: blume-20001017-v110p29p1
1044 :     Description:
1045 :    
1046 :     I made a version 110.29.1 with new bootfiles.
1047 :    
1048 :     Changes: Modified pickler/unpickler for faster and leaner unpickling.
1049 :     CM documentation changes and a small bugfix in CM's error reporting.
1050 :    
1051 :     ----------------------------------------------------------------------
1052 : george 705 Name: Lal George
1053 :     Date: 2000/09/27 14:42:35 EDT
1054 :     Tag: george-20000927-nodestatus
1055 :     Description:
1056 :    
1057 :     Changed the type of the nodestatus, so that:
1058 :    
1059 :     SPILLED(~1) is now SPILLED
1060 :     SPILLED(m) where m>=0 is now MEMREG(m)
1061 :     SPILLED(s) where s<~1 is now SPILL_LOC(~s)
1062 :    
1063 :     ----------------------------------------------------------------------
1064 : blume 697 Name: Matthias Blume
1065 : blume 703 Date: 2000/09/07 14:45:00 JST
1066 :     Tag: blume-20000907-cmerrmsg
1067 :     Description:
1068 :    
1069 :     Small tweak to CM to avoid getting ML syntax error messages twice.
1070 :    
1071 :     ----------------------------------------------------------------------
1072 :     Name: Matthias Blume
1073 : blume 701 Date: 2000/08/31 18:00:00 JST
1074 :     Tag: blume-20000831-cvsbootfiles
1075 :     Description:
1076 :    
1077 :     New URL for boot files (because the 110.29 files on the BL server do
1078 :     now work correctly with my updated install scripts for yacc and lex).
1079 :    
1080 :     ----------------------------------------------------------------------
1081 :     Name: Matthias Blume
1082 : blume 697 Date: 2000/08/08 12:33:00 JST
1083 :     Tag: blume-20000808-manual
1084 :     Description:
1085 :    
1086 :     Tiny update to CM manual.
1087 :    
1088 :     ----------------------------------------------------------------------
1089 : leunga 695 Name: Allen Leung
1090 :     Date: 2000/08/7 19:31:00
1091 :     Tag: leunga-20000807-a-whole-bunch-of-stuff
1092 :    
1093 :     Moby, C--, SSA, x86, machine descriptions etc. Should only affect C--
1094 :     and Mobdy.
1095 :    
1096 :     1. x86
1097 :    
1098 :     a. Fixes to peephole module by John and Dan.
1099 :     b. Assembly fix to SETcc by Allen.
1100 :     c. Fix to c-call by John.
1101 :     d. Fix to spilling by John. (This one deals with the missing FSTPT case)
1102 :     e. Instruction selection optimization to SETcc as suggested by John.
1103 :    
1104 :     For example,
1105 :    
1106 :     MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
1107 :    
1108 :     should generate:
1109 :    
1110 :     MOVL a, x
1111 :     SUBL b, x
1112 :     SHRL 31, x
1113 :    
1114 :     2. IR stuff
1115 :    
1116 :     A bunch of new DJ-graph related algorithms added. These
1117 :     speed up SSA construction.
1118 :    
1119 :     3. SSA + Scheduling
1120 :    
1121 :     Added code for SSA and scheduling to the repository
1122 :    
1123 :     ----------------------------------------------------------------------
1124 : george 694 Name: Lal George
1125 :     Date: 2000/07/27 11:53:14 EDT
1126 :    
1127 :     Tag: lal-20000727-linux-ppc
1128 :     Description:
1129 :    
1130 :     Made changes to support Linux PPC.
1131 :     p.s. I have confirmation that the 110.29 boot files work fine.
1132 :    
1133 :     ----------------------------------------------------------------------
1134 : blume 684 Name: Matthias Blume
1135 : blume 692 Date: 2000/07/27 17:40:00 JST
1136 :     Tag: blume-20000727-scripts
1137 :     Description:
1138 :    
1139 :     !!!! WARNING !!!!
1140 :     You must recompile the runtime system!
1141 :     !!!! WARNING !!!!
1142 :    
1143 :     This is basically another round of script-enhancements:
1144 :    
1145 :     1. sml, ml-build, and ml-makedepend accept options -D and -U to define
1146 :     and undefine CM preprocessor symbols.
1147 :    
1148 :     2. ml-build avoids generating a new heap image if it finds that the
1149 :     existing one is still ok. (The condition is that no ML file had to
1150 :     be recompiled and all ML files are found to be older that the heap
1151 :     file.)
1152 :    
1153 :     To make this work smoothly, I also hacked the runtime system as
1154 :     well as SMLofNJ.SysInfo to get access to the heap image suffix
1155 :     (.sparc-solaris, ...) that is currently being used.
1156 :    
1157 :     Moreover, the signature of CM.mk_standalone has changed. See the
1158 :     CM manual.
1159 :    
1160 :     3. ml-makedepend accepts additional options -n, -a, and -o. (See the
1161 :     CM manual for details.)
1162 :    
1163 :     4. More CM manual updates:
1164 :     - all of the above has been documented.
1165 :     - there is now a section describing the (CM-related) command line
1166 :     arguments that are accepted by the "sml" command
1167 :    
1168 :     ----------------------------------------------------------------------
1169 :     Name: Matthias Blume
1170 : blume 691 Date: 2000/07/25 16:20:00 JST
1171 :     Tag: blume-20000725-makedepend
1172 :     Description:
1173 :    
1174 :     Added a script called ml-makedepend. This can be used in makefiles
1175 :     for Unix' make in a way very similar to the "makedepend" command for
1176 :     C.
1177 :    
1178 :     The script internally uses function CM.sources.
1179 :    
1180 :     Synopsis:
1181 :    
1182 :     ml-makedepend [-f makefile] cmfile targetname
1183 :    
1184 :     The default for the makefile is "makefile" (or "Makefile" should
1185 :     "makefile" not exist).
1186 :    
1187 :     ml-makedepend adds a cmfile/targetname-specific section to this
1188 :     makefile (after removing the previous version of this section). The
1189 :     section contains a single dependency specification with targetname on
1190 :     the LHS (targetname is an arbitrary name), and a list of files derived
1191 :     from the cmfile on the RHS. Some of the files on the RHS are
1192 :     ARCH/OPSYS-specific. Therefore, ml-makedepend inserts references to
1193 :     "make" variables $(ARCH) and $(OPSYS) in place of the corresponding
1194 :     path names. The makefile writer is responsible for making sure that
1195 :     these variables have correct at the time "make" is invoked.
1196 :    
1197 :     ----------------------------------------------------------------------
1198 :     Name: Matthias Blume
1199 : blume 690 Date: 2000/07/22 23:30:00 JST
1200 :     Tag: blume-20000722-urlupdate
1201 :     Description:
1202 :    
1203 :     Changed BOOT and config/srcarchiveurl to point to BL server:
1204 :    
1205 :     ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
1206 :    
1207 :     ----------------------------------------------------------------------
1208 :     Name: Matthias Blume
1209 : blume 686 Date: 2000/07/18 18:00:00 JST
1210 :     Tag: blume-20000718-Version_110_29
1211 :     Description:
1212 :    
1213 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
1214 :    
1215 :     2. Updated config/version to 110.29
1216 :    
1217 :     3. Updated config/srcarchiveurl
1218 :    
1219 :     3. New boot files!
1220 :     ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
1221 :    
1222 :     ----------------------------------------------------------------------
1223 :     Name: Matthias Blume
1224 : blume 684 Date: 2000/07/11 13:58:00 JST
1225 :     Tag: blume-20000711-doctypo
1226 :     Description:
1227 :    
1228 :     Fixed a few typos in CM manual.
1229 :    
1230 :     ----------------------------------------------------------------------
1231 : leunga 683 Name: Allen Leung
1232 :     Date: 2000/06/15 00:38:00
1233 :     Tag: leunga-20000704-sparc-x86
1234 :    
1235 :     1. x86 peephole improvement sp += k; sp -= k => nop [from John]
1236 :     2. fix to x86 RET bug [found by Dan Grossman]
1237 :     3. sparc assembly bug fix for ticc instructions [found by Fermin]
1238 :    
1239 :     Affects c-- and moby only
1240 :    
1241 :     ----------------------------------------------------------------------
1242 : blume 680 Name: Matthias Blume
1243 : blume 682 Date: 2000/07/04 15:26:00
1244 :     Tag: blume-20000704-trigger
1245 :     Description:
1246 :    
1247 :     1. Improvements to CM manual.
1248 :     2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
1249 :     of getting a back-trace. The function, when called, raises an
1250 :     internal exception which explicitly carries the full back-trace history,
1251 :     so it is unaffected by any intervening handle-raise pairs ("trivial"
1252 :     or not). The interactive loop will print that history once it arrives
1253 :     at top level.
1254 :     Short of having all exceptions implicitly carry the full history, the
1255 :     recommended way of using this facility is:
1256 :     - compile your program with instrumentation "on"
1257 :     - run it, when it raises an exception, look at the history
1258 :     - if the history is "cut off" because of some handler, go and modify
1259 :     your program so that it explicitly calls BTrace.trigger
1260 :     - recompile (still instrumented), and rerun; look at the full history
1261 :    
1262 :     ----------------------------------------------------------------------
1263 :     Name: Matthias Blume
1264 :     Date: 2000/07/03 15:36:00 JST
1265 : blume 680 Tag: blume-20000702-manual
1266 :     Description:
1267 :    
1268 :     Small corrections and updates to CM manual.
1269 :    
1270 :     ----------------------------------------------------------------------
1271 : blume 682 Name: Matthias Blume
1272 : blume 679 Date: 2000/06/29 16:04:00 JST
1273 :     Tag: blume-20000629-yacctool
1274 :     Description:
1275 :    
1276 :     Changes:
1277 :    
1278 :     1. Class "mlyacc" now takes separate arguments to pass options to
1279 :     generated .sml- and .sig-files independently.
1280 :     2. Corresponding CM manual updates.
1281 :     3. BTrace module now also reports call sites. (However, for loop clusters
1282 :     it only shows from where the cluster was entered.) There are associated
1283 :     modifications to core.sml, internals.{sig,sml}, btrace.sml, and btimp.sml.
1284 :    
1285 :     ----------------------------------------------------------------------
1286 : blume 675 Name: Matthias Blume
1287 : blume 678 Date: 2000/06/27 16:51:00 JST
1288 :     Tag: blume-20000627-noweb
1289 :     Description:
1290 :    
1291 :     Changes:
1292 :    
1293 :     1. Implemented "subdir" and "witness" options for noweb tool.
1294 :     This caused some slight internal changes in CM's tool implementation.
1295 :     2. Fixed bug in "tool plugin" mechanism. This is essentially cleaning
1296 :     some remaining issues from earlier path anchor changes.
1297 :     3. Updated CM manual accordingly.
1298 :    
1299 :     4. Changed implementation of back-tracing so that I now consider it
1300 :     ready for prime-time.
1301 :    
1302 :     In particular, you don't have to explicitly trigger the back-trace
1303 :     anymore. Instead, if you are running BTrace-instrumented code and
1304 :     there is an uncaught exception (regardless of whether or not it was
1305 :     raised in instrumented code), the top-level evalloop will print
1306 :     the back-trace.
1307 :    
1308 :     Features:
1309 :    
1310 :     - Instrumented and uninstrumented code work together seemlessly.
1311 :     (Of course, uninstrumented code is never mentioned in actual
1312 :     back-traces.)
1313 :    
1314 :     - Asymptotic time- and space-complexity of instrumented code is
1315 :     equal to that of uninstrumented code. (This means that
1316 :     tail-recursion is preserved by the instrumentation phase.)
1317 :    
1318 :     - Modules whose code has been instrumented in different sessions
1319 :     work together without problem.
1320 :    
1321 :     - There is no penalty whatsoever on uninstrumented code.
1322 :    
1323 :     - There is no penalty on "raise" expressions, even in
1324 :     instrumented code.
1325 :    
1326 :     A potential bug (or perhaps it is a feature, too):
1327 :    
1328 :     A back-trace reaches no further than the outermost instrumented
1329 :     non-trivial "raise". Here, a "trivial" raise is one that is the
1330 :     sole RHS of a "handle" rule. Thus, back-traces reach trough
1331 :    
1332 :     <exp> handle e => raise e
1333 :    
1334 :     and even
1335 :    
1336 :     <exp> handle Foo => raise Bar
1337 :    
1338 :     and, of course, through
1339 :    
1340 :     <exp> handle Foo => ...
1341 :    
1342 :     if the exception was not Foo.
1343 :    
1344 :     Back-traces always reach right through any un-instrumented code
1345 :     including any of its "handle" expressions, trivial or not.
1346 :    
1347 :     To try this out, do the following:
1348 :    
1349 :     - Erase all existing binfiles for your program.
1350 :     (You may keep binfiles for those modules where you think you
1351 :     definitely don't need back-tracing.)
1352 :     - Turn on back-trace instrumentation:
1353 :     SMLofNJ.Internals.BTrace.mode (SOME true);
1354 :     - Recompile your program. (I.e., run "CM.make" or "use".)
1355 :     - You may now turn instrumentation off again (if you want):
1356 :     SMLofNJ.Internals.BTrace.mode (SOME false);
1357 :     - Run your program as usual. If it raises an exception that
1358 :     reaches the interactive toplevel, then a back-trace will
1359 :     automatically be printed. After that, the toplevel loop
1360 :     will print the exception history as usual.
1361 :    
1362 :     ----------------------------------------------------------------------
1363 :     Name: Matthias Blume
1364 : blume 677 Date: 2000/06/26 09:56:46 JST
1365 :     Tag: blume-20000626-setup
1366 :     Description:
1367 :    
1368 :     CM: - setup-parameter to "sml" added; this can be used to run arbitrary
1369 :     ML code before and after compiling a file (e.g., to set compiler
1370 :     flags)
1371 :    
1372 :     Compiler: - improved btrace API (in core.sml, internals.{sig,sml})
1373 :     - associated changes to btrace.sml (BTrace instrumentation pass)
1374 :     - cleaner implementation of btimp.sml (BTrace tracing and report
1375 :     module)
1376 :    
1377 :     CM manual: * new path encoding documented
1378 :     * description of setup-parameter to "sml" added
1379 :    
1380 :     The biggest user-visible change to back-tracing is that it is no
1381 :     longer necessary to compile all traced modules within the same
1382 :     session. (This was a real limitation.)
1383 :    
1384 :     ----------------------------------------------------------------------
1385 :     Name: Matthias Blume
1386 : blume 676 Date: 2000/06/24 12:40:00 JST
1387 :     Tag: blume-20000624-startup
1388 :     Description:
1389 :    
1390 :     Fixes startup slowdown problem. (I was calling SrcPath.sync a _tad_
1391 :     bit too often -- to put it mildly. :)
1392 :    
1393 :     ----------------------------------------------------------------------
1394 :     Name: Matthias Blume
1395 : blume 675 Date: 2000/06/23 18:20:00 JST
1396 :     Tag: blume-20000623-btrace
1397 :     Description:
1398 :    
1399 :     This updates adds a backtrace facility to aid programmers in debugging
1400 :     their programs. This involves the following changes:
1401 :    
1402 :     1. Module system/smlnj/init/core.sml (structure _Core) now has hooks for
1403 :     keeping track of the current call stack. When programs are compiled
1404 :     in a special mode, the compiler will insert calls to these hooks
1405 :     into the user program.
1406 :     "Hook" means that it is possible for different implementations of
1407 :     back-tracing to register themselves (at different times).
1408 :    
1409 :     2. compiler/MiscUtil/profile/btrace.sml implements the annotation phase
1410 :     as an Absyn.dec->Absyn.dec rewrite. Normally this phase is turned off.
1411 :     It can be turned on using this call:
1412 :     SMLofNJ.Internals.BTrace.mode (SOME true);
1413 :     Turning it off again:
1414 :     SMLofNJ.Internals.BTrace.mode (SOME false);
1415 :     Querying the current status:
1416 :     SMLofNJ.Internals.BTrace.mode NONE;
1417 :     Annotated programs are about twice as big as normal ones, and they
1418 :     run a factor of 2 to 4 slower with a dummy back-trace plugin (one
1419 :     where all hooks do nothing). The slowdown with a plugin that is
1420 :     actually useful (such as the one supplied by default) is even greater,
1421 :     but in the case of the default plugin it is still only an constant
1422 :     factor (amortized).
1423 :    
1424 :     3. system/Basis/Implementation/NJ/internals.{sig,sml} have been augmented
1425 :     with a sub-structure BTrace for controlling back-tracing. In particular,
1426 :     the above-mentioned function "mode" controls whether the annotation
1427 :     phase is invoked by the compiler. Another important function is
1428 :     "trigger": when called it aborts the current execution and causes
1429 :     the top-level loop to print a full back-trace.
1430 :    
1431 :     4. compiler/MiscUtil/profile/btimp.sml is the current default plugin
1432 :     for back-tracing. It keeps track of the dynamic call stack and in
1433 :     addition to that it keeps a partial history at each "level" of that
1434 :     stack. For example, if a tail-calls b, b tail-calls c, and c tail-calls
1435 :     d and b (at separate times, dynamically), then the report will show:
1436 :    
1437 :     GOTO d
1438 :     /c
1439 :     GOTO \b
1440 :     CALL a
1441 :    
1442 :     This shows that there was an initial non-tail call of a, then a
1443 :     tail-call to b or c, looping behavior in a cluster of functions that
1444 :     consist of b and c, and then a goto from that cluster (i.e., either from
1445 :     b or from c) to d.
1446 :    
1447 :     Note that (depending on the user program) the amount of information
1448 :     that the back-trace module has to keep track of at each level is bounded
1449 :     by a constant. Thus, the whole implementation has the same asymptotical
1450 :     complexity as the original program (both in space and in time).
1451 :    
1452 :     5. compiler/TopLevel/interact/evalloop.sml has been modified to
1453 :     handle the special exception SMLofNJ.Internals.BTrace.BTrace
1454 :     which is raised by the "trigger" function mentioned above.
1455 :    
1456 :     Notes on usage:
1457 :    
1458 :     - Annotated code works well together with unannotated code:
1459 :     Unannotated calls simply do not show up at all in the backtrace.
1460 :    
1461 :     - It is not a good idea to let modules that were annotated during
1462 :     different sessions run at the same time. This is because the compiler
1463 :     chooses small integers to identify individual functions, and there
1464 :     will be clashes if different modules were compiled in separate sessions.
1465 :     (Nothing will crash, and you will even be told about the clashes, but
1466 :     back-trace information will in general not be useful.)
1467 :    
1468 :     - Back-tracing can be confused by callcc and capture.
1469 :    
1470 :     - The only way of getting a back-trace right now is to explicitly
1471 :     invoke the "trigger" function from your user program. Eventually, we
1472 :     should make every exception carry back-trace information (if
1473 :     available). But since this creates more overhead at "raise"-time
1474 :     (similar to the current exnHistory overhead), I have not yet
1475 :     implemented this. (The implementation will be rather easy.) With
1476 :     exceptions carrying back-trace information, this facility will be even
1477 :     more useful because users don't need to modify their programs...
1478 :    
1479 :     - While it is possible to compile the compiler with back-trace
1480 :     annotations turned on (I did it to get some confidence in
1481 :     correctness), you must make absolutely sure that core.sml and
1482 :     btimp.sml are compiled WITHOUT annotation! (core.sml cannot actually
1483 :     be compiled with annotation because there is no core access yet, but
1484 :     if you compile btimp.sml with annotation, then the system will go into
1485 :     an infinite recursion and crash.)
1486 :     Since CM currently does not know about BTrace, the only way to turn
1487 :     annotations on and off for different modules of the compiler is to
1488 :     interrupt CMB.make, change the settings, and re-invoke it. Of course,
1489 :     this is awkward and clumsy.
1490 :    
1491 :     Sample sessions:
1492 :    
1493 :     Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
1494 :     - SMLofNJ.Internals.BTrace.mode (SOME true);
1495 :     [autoloading]
1496 :     [autoloading done]
1497 :     val it = false : bool
1498 :     - structure X = struct
1499 :     - fun main n = let
1500 :     - fun a (x, 0) = d x
1501 :     - | a (x, n) = b (x, n - 1)
1502 :     - and b (x, n) = c (x, n)
1503 :     - and c (x, n) = a (x, n)
1504 :     - and d x = e (x, 3)
1505 :     - and e (x, 0) = f x
1506 :     - | e (x, n) = e (x, n - 1)
1507 :     - and f 0 = SMLofNJ.Internals.BTrace.trigger ()
1508 :     - | f n = n * g (n - 1)
1509 :     - and g n = a (n, 3)
1510 :     - in
1511 :     - f n
1512 :     - end
1513 :     - end;
1514 :     structure X : sig val main : int -> int end
1515 :     - X.main 3;
1516 :     *** BACK-TRACE ***
1517 :     GOTO stdIn:4.2-13.20: X.main[2].f
1518 :     GOTO-( stdIn:4.2-13.20: X.main[2].e
1519 :     GOTO stdIn:4.2-13.20: X.main[2].d
1520 :     / stdIn:4.2-13.20: X.main[2].a
1521 :     | stdIn:4.2-13.20: X.main[2].b
1522 :     GOTO-\ stdIn:4.2-13.20: X.main[2].c
1523 :     CALL stdIn:4.2-13.20: X.main[2].g
1524 :     GOTO stdIn:4.2-13.20: X.main[2].f
1525 :     GOTO-( stdIn:4.2-13.20: X.main[2].e
1526 :     GOTO stdIn:4.2-13.20: X.main[2].d
1527 :     / stdIn:4.2-13.20: X.main[2].a
1528 :     | stdIn:4.2-13.20: X.main[2].b
1529 :     GOTO-\ stdIn:4.2-13.20: X.main[2].c
1530 :     CALL stdIn:4.2-13.20: X.main[2].g
1531 :     GOTO stdIn:4.2-13.20: X.main[2].f
1532 :     GOTO-( stdIn:4.2-13.20: X.main[2].e
1533 :     GOTO stdIn:4.2-13.20: X.main[2].d
1534 :     / stdIn:4.2-13.20: X.main[2].a
1535 :     | stdIn:4.2-13.20: X.main[2].b
1536 :     GOTO-\ stdIn:4.2-13.20: X.main[2].c
1537 :     CALL stdIn:4.2-13.20: X.main[2].g
1538 :     GOTO stdIn:4.2-13.20: X.main[2].f
1539 :     CALL stdIn:2.15-17.4: X.main[2]
1540 :     -
1541 :    
1542 :     (Note that because of a FLINt bug the above code currently does not
1543 :     compile without BTrace turned on.)
1544 :    
1545 :     Here is another example, using my modified Tiger compiler:
1546 :    
1547 :     Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
1548 :     - SMLofNJ.Internals.BTrace.mode (SOME true);
1549 :     [autoloading]
1550 :     [autoloading done]
1551 :     val it = false : bool
1552 :     - CM.make "sources.cm";
1553 :     [autoloading]
1554 :     ...
1555 :     [autoloading done]
1556 :     [scanning sources.cm]
1557 :     [parsing (sources.cm):parse.sml]
1558 :     [creating directory CM/SKEL ...]
1559 :     [parsing (sources.cm):tiger.lex.sml]
1560 :     ...
1561 :     [wrote CM/sparc-unix/semant.sml]
1562 :     [compiling (sources.cm):main.sml]
1563 :     [wrote CM/sparc-unix/main.sml]
1564 :     [New bindings added.]
1565 :     val it = true : bool
1566 :     - Main.compile ("../testcases/merge.tig", "foo.out");
1567 :     *** BACK-TRACE ***
1568 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trvar
1569 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
1570 :     CALL lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
1571 :     GOTO lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
1572 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
1573 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
1574 :     CALL lib/semant.sml:488.3-505.6: SemantFun[2].transDec.trdec[2].transBody[2]
1575 :     / lib/semant.sml:411.65-543.8: SemantFun[2].transDec
1576 :     CALL-\ lib/semant.sml:413.2-540.9: SemantFun[2].transDec.trdec[2]
1577 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
1578 :     CALL lib/semant.sml:8.52-558.4: SemantFun[2].transProg[2]
1579 :     CALL main.sml:1.18-118.4: Main.compile[2]
1580 :     -
1581 :    
1582 :     ----------------------------------------------------------------------
1583 : blume 673 Name: Matthias Blumen
1584 :     Date: 2000/06/21 18:00:00 JST
1585 :     Tag: blume-20000621-manual
1586 :     Description:
1587 :    
1588 :     CM manual update: Path environments documented.
1589 :    
1590 :     ----------------------------------------------------------------------
1591 : blume 666 Name: Matthias Blume
1592 : blume 672 Date: 2000/06/19 13:40:00
1593 :     Tag: blume-20000619-manual
1594 :     Description:
1595 :    
1596 :     CM manual and system/README update. This only covers the fact that
1597 :     there are no more implicit anchors. (Path environments and the "bind"
1598 :     option to "cm" have yet to be documented.)
1599 :    
1600 :     ----------------------------------------------------------------------
1601 :     Name: Matthias Blume
1602 : blume 671 Date: 2000/06/19 11:05:00 JST
1603 :     Tag: blume-20000619-chdir-bugfix
1604 :     Description:
1605 :    
1606 :     Fixed a bug in new SrcPath module that sometimes led to a bad chDir call.
1607 :    
1608 :     ----------------------------------------------------------------------
1609 :     Name: Matthias Blume
1610 : blume 670 Date: 2000/06/18 22:00:10 JST
1611 :     Tag: blume-20000618-implicit-anchors-really-gone
1612 :     Description:
1613 :    
1614 :     I updates the previous HISTORY entry where I forgot to mention that
1615 :     implicit anchors are no longer with us.
1616 :    
1617 :     The current update also gets rid of the (now useless) controller
1618 :     CM.Control.implicit_anchors.
1619 :    
1620 :     ----------------------------------------------------------------------
1621 :     Name: Matthias Blume
1622 : blume 666 Date: 2000/06/16 17:30:00 JST
1623 :     Tag: blume-20000616-anchorenv
1624 :     Description:
1625 :    
1626 :     This patch implements the long anticipated (just kidding :) "anchor
1627 :     environment" mechanism. In the course of doing this, I also
1628 :     re-implemented CM's internal "SrcPath" module from scratch. The new
1629 :     one should be more robust in certain boundary cases. In any case, it
1630 :     is a lot cleaner than its predecessor (IMHO).
1631 :    
1632 :     This time, although there is yet another boot file format change, I
1633 :     kept the unpickler backward-compatible. As a result, no new bootfiles
1634 :     are necessary and bootstrapping is straightforward. (You cannot read
1635 :     new bootfiles into an old system, but the other way around is no
1636 :     problem.)
1637 :    
1638 :     Visible changes:
1639 :    
1640 : blume 670 ** 0. Implicit path anchors (without the leading $-symbol) are no
1641 :     longer recognized at all. This means that such path names are not
1642 :     illegal either. For example, the name basis.cm simply refers to a
1643 :     local file called "basis.cm" (i.e, the name is an ordinary path
1644 :     relative to .cm-files directory). Or, to put it differently, only
1645 :     names that start with $ are anchored paths.
1646 : blume 666
1647 : blume 670 ** 1. The $<singlearc> abbreviation for $/<singlearc> has finally
1648 :     vanished.
1649 :    
1650 :     John (Reppy) had critizised this as soon as I originally proposed and
1651 : blume 666 implemented it, but at that time I did not really deeply believe
1652 :     him. :) Now I came full-circle because I need the $<singlearc> syntax
1653 :     in another place where it cannot be seen as an abbreviation for
1654 :     $/<singlearc>. To avoid the confusion, $<singlearc> now means what it
1655 :     seems to mean (i.e., it "expands" into the corresponding anchor
1656 :     value).
1657 :    
1658 :     However, when paths are used as members in CM description files, it
1659 :     continues to be true that there must be at least another arc after the
1660 :     anchor. This is now enforced separately during semantic analysis
1661 : blume 670 (i.e., from a lexical/syntactical point of view, the notation is ok.)
1662 : blume 666
1663 :     ** 2. The "cm" class now accepts an option "bind". The option's value
1664 :     is a sub-option list of precisely two items -- one labeled "anchor"
1665 :     and the other one labeled "value". As you might expect, "anchor" is
1666 :     used to specify an anchor name to be bound, and "value" specifies what
1667 :     the anchor is being bound to.
1668 :    
1669 :     The value must be a directory name and can be given in either standard
1670 :     syntax (including the possibility that it is itself an anchored path)
1671 :     or native syntax.
1672 :    
1673 :     Examples:
1674 :    
1675 :     foo.cm (bind:(anchor:bar value:$mystuff/bar))
1676 :     lib.cm (bind:(anchor:a value:"H:\\x\\y\\z")) (* only works under windows *)
1677 :    
1678 :     and so on.
1679 :    
1680 :     The meaning of this is that the .cm-file will be processed with an
1681 :     augmented anchor environment where the given anchor(s) is/are bound to
1682 :     the given values(s).
1683 :    
1684 :     The rationale for having this feature is this: Suppose you are trying
1685 :     to use two different (already stable) libraries a.cm and b.cm (that
1686 :     you perhaps didn't write yourself). Further, suppose each of these
1687 :     two libraries internally uses its own auxiliary library $aux/lib.cm.
1688 :     Normally you would now have a problem because the anchor "lib" can not
1689 :     be bound to more than one value globally. Therefore, the project that
1690 :     uses both a.cm and b.cm must locally redirect the anchor to some other
1691 :     place:
1692 :    
1693 :     a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
1694 :     b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
1695 :    
1696 :     This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
1697 :     /usr/lib/smlnj/b-stuff/aux.cm, respectively.
1698 :    
1699 :     Hard-wiring path names is a bit inflexible (and CM will verbosely warn
1700 :     you when you do so at the time of CM.stabilize). Therefore, you can
1701 :     also use an anchored path as the value:
1702 :    
1703 :     a.cm (bind:(anchor:lib value:$a-lib))
1704 :     b.cm (bind:(anchor:lib value:$b-lib))
1705 :    
1706 :     Now you can globally configure (using the usual CM.Anchor.anchor or
1707 :     pathconfig machinery) bindings for "a-lib" and "b-lib". Since "lib"
1708 :     itself is always locally bound, setting it globally is no longer
1709 :     meaningful or necessary (but it does not hurt either). In fact, "lib"
1710 :     can still be used as a global anchor for separate purposes. As a
1711 :     matter of fact, one can locally define "lib" in terms of a global
1712 :     "lib":
1713 :    
1714 :     a.cm (bind:(anchor:lib value:$lib/a))
1715 :     b.cm (bind:(anchor:lib value:$lib/b))
1716 :    
1717 :     ** 3: The encoding of path names has changed. This affects the way
1718 :     path names are shown in CM's progress report and also the internal
1719 :     protocol encoding used for parallel make.
1720 :    
1721 :     The encoding now uses one or more ':'-separated segments. Each
1722 :     segments corresponds to a file that has been specified relative to the
1723 :     file given by its preceding segment. The first segment is either
1724 :     relative to the CWD, absolute, or anchored. Each segment itself is
1725 :     basically a Unix pathname; all segments but the first are relative.
1726 :    
1727 :     Example:
1728 :    
1729 :     $foo/bar/baz.cm:a/b/c.sml
1730 :    
1731 :     This path denotes the file bar/a/b/c.sml relative to the directory
1732 :     denoted by anchor "foo". Notice that the encoding also includes
1733 :     baz.cm which is the .cm-file that listed a/b/c.sml. As usual, such
1734 :     paths are resolved relative to the .cm-files directory, so baz.cm must
1735 :     be ignored to get the "real" pathname.
1736 :    
1737 :     To make this fact more obvious, CM puts the names of such "virtual
1738 :     arcs" into parentheses when they appear in progress reports. (No
1739 :     parentheses will appear in the internal protocol encoding.) Thus,
1740 :     what you really see is:
1741 :    
1742 :     $foo/bar/(baz.cm):a/b/c.sml
1743 :    
1744 :     I find this notation to be much more informative than before.
1745 :    
1746 :     Another new feature of the encoding is that special characters
1747 :     including parentheses, colons, (back)slashes, and white space are
1748 :     written as \ddd (where ddd is the decimal encoding of the character).
1749 :    
1750 : blume 670 *** The CM manual still needs to be updated.
1751 :    
1752 : blume 666 ----------------------------------------------------------------------
1753 : leunga 660 Name: Allen Leung
1754 :     Date: 2000/06/15 00:38:00
1755 :     Tag: leunga-20000615-x86-peephole
1756 :    
1757 :     x86 Peephole fix by Fermin. Affects c-- and moby only.
1758 :    
1759 :     ----------------------------------------------------------------------
1760 : blume 658 Name: Matthias Blume
1761 :     Date: 2000/06/12 11:40:00
1762 :     Tag: blume-20000612-parmakefix
1763 :     Description:
1764 :    
1765 :     More cleanup after changing the file naming scheme: This time I
1766 :     repaired the parallel make mechanism for CMB.make which I broke earlier.
1767 :    
1768 :     ----------------------------------------------------------------------
1769 : leunga 657 Name: Allen Leung
1770 :     Date: 2000/06/09 01:25:00
1771 :     Tag: leunga-20000609-various
1772 :    
1773 :     None of these things should affect normal SML/NJ operations
1774 :    
1775 :     1. Peephole improvements provided by Fermin (c--)
1776 :     2. New annotation DEFUSE for adding extra dependence (moby)
1777 :     3. New X86 LOCK instructions (moby)
1778 :     4. New machine description language for reservation tables (scheduling)
1779 :     5. Fixes to various optimization/analysis modules (branch chaining, dominator
1780 :     trees etc.)
1781 :     6. I've changed the CM files so that they can work with versions
1782 :     110.0.6, 110.25 and 110.28
1783 :    
1784 :     ----------------------------------------------------------------------
1785 : blume 652 Name: Matthias Blume
1786 : blume 656 Date: 2000/06/09 12:40:00
1787 :     Tag: blume-20000609-log
1788 :     Description:
1789 :    
1790 :     - Removed all(?) remaining RCS Log entries from sources.
1791 :    
1792 :     - Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
1793 :     anchored paths).
1794 :    
1795 :     ----------------------------------------------------------------------
1796 :     Name: Matthias Blume
1797 : blume 653 Date: 2000/06/07 17:00:00 JST
1798 :     Tag: blume-20000607-no-implicit-anchors
1799 :     Description:
1800 :    
1801 :     1. This update changes the default setting for
1802 :     CM.Control.implicit_anchors from true to false. This means that
1803 :     implicit anchors are no longer permitted by default. I also tried to
1804 :     make sure that nothing else still relies on implicit anchors.
1805 :     (This is the next step on the schedule towards a CM that does not even
1806 :     have the notion of implicit anchors anymore.)
1807 :    
1808 :     2. More CM manual updates.
1809 :    
1810 :     3. I managed to track down and fix the pickling bug I mentioned last
1811 :     time. Because of the previously existing workaround, this entails no
1812 :     immediate practical changes.
1813 :    
1814 :     ----------------------------------------------------------------------
1815 :     Name: Matthias Blume
1816 : blume 652 Date: 2000/06/06 11:15:00 JST
1817 :     Tag: blume-20000606-lazierpickle
1818 :     Description:
1819 :    
1820 :     !!!! NEW BOOT FILES !!!!
1821 :    
1822 :     * The main purpose of this update is to make library pickles lazier in
1823 :     order to reduce the initial space penalty for autoloading a library.
1824 :     As a result, it is now possible to have $smlnj/compiler.cm
1825 :     pre-registered. This should take care of the many complaints or
1826 :     inquiries about missing structure Compiler. This required changes to
1827 :     CM's internal data structures and small tweaks to some algorithms.
1828 :    
1829 :     As a neat additional effect, it is no longer necessary (for the sake
1830 :     of lean heap image files) to distinguish between a "minimal" CM and a
1831 :     "full" CM. Now, there is only one CM (i.e., the "full" version:
1832 :     $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
1833 :     interactive top level. ($smlnj/cm/minimal.cm is gone.)
1834 :    
1835 :     To make the life of compiler-hackers easier, "makeml" now also
1836 :     pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm). In other
1837 :     words, after you bootstrap a new sml for the first time, you will not
1838 :     have to autoload $smlnj/cmb.cm again afterwards. (The first time
1839 :     around you will still have to do it, though.)
1840 :    
1841 :     * A second change consists of major updates to the CM manual. There
1842 :     are now several appendices with summary information and also a full
1843 :     specification of the CM description file syntax.
1844 :    
1845 :     * In directory src/system I added the script "allcross". This script
1846 :     invokes sml and cross-compiles the compiler for all supported
1847 :     architectures. (Useful when providing a new set of boot files.)
1848 :    
1849 :     * There seems to be a latent bug in my "lazy pickles" mechanism. I
1850 :     added a small tweak to pickle-util.sml to work around this problem,
1851 :     but it is not a proper fix yet. I will investigate further. (The
1852 :     effect of the bug was an inflation of library pickle size.)
1853 :    
1854 :     * Version number increased to 110.28.1 (to avoid compatibility problems).
1855 :    
1856 :     ----------------------------------------------------------------------
1857 : leunga 646 Name: Allen Leung
1858 : leunga 648 Date: 2000/05/25 17:28 EDT
1859 :     Tag: leunga-20000525-ra
1860 :     Description:
1861 :    
1862 :     Fixed a bug in freezing phase of the register allocator.
1863 :    
1864 :     ----------------------------------------------------------------------
1865 :     Name: Allen Leung
1866 : leunga 647 Date: 2000/05/15 22:53 EDT
1867 : leunga 646 Tag: leunga-20000515-alpha-x86-ra
1868 :     Description:
1869 :    
1870 :     1. Alpha
1871 :    
1872 :     Slight cleanup. Removed the instruction SGNXL
1873 :    
1874 :     2. X86
1875 :    
1876 :     Added the following instructions to the instruction set:
1877 :    
1878 :     ROLx, RORx,
1879 :     BTx, BTSx, BTLx, BTRx,
1880 :     XCHGx, and variants with the LOCK prefix
1881 :    
1882 :     3. Register Allocation
1883 :    
1884 :     The module ra-rewrite-with-renaming has been improved.
1885 :    
1886 : leunga 647 These have no effect on SML/NJ.
1887 :    
1888 : leunga 646 ----------------------------------------------------------------------
1889 : blume 642 Name: Matthias Blume
1890 : blume 645 Date: 2000/05/15 16:20:00 JST
1891 :     Tag: blume-20000515-lightrebuild
1892 :     Description:
1893 :    
1894 :     1. I added an alternative to "-rebuild" to "makeml". The difference is
1895 :     that prior to calling CMB.make' the CM-variable "LIGHT" will be
1896 :     defined. In effect, the command will not build any cross-compiler
1897 :     backends and therefore finish more quickly.
1898 :    
1899 :     The "fixpt" script also takes a "-light" switch to be able to use
1900 :     this new facility while compiling for a fixpoint.
1901 :    
1902 :     2. I replaced all mentions of anchored paths in group owner specifications
1903 :     with simple relative paths (usually starting with "..").
1904 :     The rationale is that a library's internal workings should not be
1905 :     compromised by the lack of some anchor. (An anchor is necessary
1906 :     for someone who wants to refer to the library by an anchored path,
1907 :     but it should not be necessary to build the same library in the first
1908 :     place.)
1909 :    
1910 :     3. I changed the way CM's tool mechanism determines the shell command
1911 :     string used for things like ml-yacc etc. so that it does not break
1912 :     when CM.Control.implicit_anchors is turned off.
1913 :    
1914 :     ----------------------------------------------------------------------
1915 :     Name: Matthias Blume
1916 : blume 644 Date: 2000/05/12 18:20:00 JST
1917 :     Tag: blume-20000512-ml-build
1918 :     Description:
1919 :    
1920 :     Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
1921 :     getting installed properly (by config/install.sh).
1922 :    
1923 :     ----------------------------------------------------------------------
1924 :     Name: Matthias Blume
1925 : blume 643 Date: 2000/05/12 17:30:00 JST
1926 :     Tag: blume-20000512-anchors
1927 :     Description:
1928 :    
1929 :     !!! NEW BOOT FILES !!!
1930 :    
1931 :     This change is in preparation of fading out support for "implicitly
1932 :     anchored path names". I went through all sources and used the
1933 :     explicit (and relatively new) $-notation. See system/README and the
1934 :     CM manual for more info on this.
1935 :    
1936 :     I also modified the anchoring scheme for some things such as "smlnj",
1937 :     "MLRISC", "cm", etc. to take advantage of the fact that explicit
1938 :     anchors are more expressive: anchor name and first arc do not have to
1939 :     coincide. This entails the following user-visible change:
1940 :    
1941 :     You have to write $smlnj/foo/bar instead of smlnj/foo/bar. In
1942 :     particular, when you fire up sml with a command-line argument, say,
1943 :     e.g.:
1944 :    
1945 :     sml '$smlnj/cmb.cm'
1946 :    
1947 :     At the ML toplevel prompt:
1948 :    
1949 :     CM.autoload "$smlnj/cmb.cm";
1950 :    
1951 :     There is also a new controller in CM.Control that can be used to turn
1952 :     off all remaining support for implicit anchors by saying:
1953 :    
1954 :     CM.autoload "$smlnj/
1955 :     #set CM.Control.implicit_anchors false;
1956 :    
1957 :     This causes CM to reject implicitly anchored paths. This is (for the
1958 :     time being) less permissive than the "final" version where there will
1959 :     be no more such implicit anchors and relative paths will be just that:
1960 :     relative.
1961 :    
1962 :     The next step (version after next version?) will be to make the
1963 :     default for CM.Control.implicit_anchors false. After the dust has
1964 :     settled, I can then produce the "final" version of this...
1965 :    
1966 :     Note: Since bootstrapping is a bit tricky, I provided new boot files.
1967 :    
1968 :     ----------------------------------------------------------------------
1969 :     Name: Matthias Blume
1970 : blume 642 Date: 2000/05/11 16:30:00 JST
1971 :     Tag: blume-20000511-sources
1972 :     Description:
1973 :    
1974 :     The main change is that I added function CM.sources as a generalized
1975 :     version of the earlier CM.makedepend. This entails the following
1976 :     additional changes:
1977 :    
1978 :     - CM.makedepend has been dropped.
1979 :    
1980 :     - CM manual has been updated.
1981 :    
1982 :     - TOOLS signature and API have been changed.
1983 :    
1984 :     ----------------------------------------------------------------------
1985 : leunga 640 Name: Allen Leung
1986 : leunga 641 Date: 2000/05/10 21:17 EDT
1987 :     Tag: leunga-20000510-moby-c--ssa
1988 :     Description:
1989 :    
1990 :     Various bug fixes and new features for C--, Moby and MLRISC optimizations.
1991 :     None of these affect SML/NJ.
1992 :    
1993 :     1. Register Allocation
1994 :    
1995 :     a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
1996 :     This module tries to remove local (i.e. basic block level) redundancies
1997 :     during spilling.
1998 :    
1999 :     b. A new framework for performing region based register allocation.
2000 :     Not yet entirely functional.
2001 :    
2002 :     2. X86
2003 :    
2004 :     a. DefUse for POP was missing the stack pointer [found by Lal]
2005 :     b. Reload for CALL was incorrect in X86Spill [found by John]
2006 :     c. Various fixes in X86Spill so that it can be used correctly for
2007 :     the new spilling module.
2008 :    
2009 :     3. SSA/IR
2010 :    
2011 :     a. New module ir/dj-dataflow.sml implements elimination based
2012 :     data flow analysis.
2013 :    
2014 :     4. MLRiscGen
2015 :    
2016 :     a. Fix for gc type annotation
2017 :    
2018 :     5. MDGen
2019 :    
2020 :     Various fixes for machine description -> ml code translation. For ssa
2021 :     only.
2022 :    
2023 :     ----------------------------------------------------------------------
2024 :     Name: Allen Leung
2025 : leunga 640 Date: 2000/05/08 22:17 EDT
2026 :     Tag: leunga-20000508-labexp
2027 :     Description:
2028 :    
2029 :     Fermin has found a few assembly problems with constant expressions
2030 :     generated in LabelExp. Mostly, the problems involve extra parentheses,
2031 :     which choke on dumb assemblers. This is his fix.
2032 :    
2033 :     ----------------------------------------------------------------------
2034 : dbm 635 Name: Dave MacQueen
2035 :     Date: 2000/04/09 14:00 EDT
2036 :     Tag: dbm-20000502-Version_110_28
2037 :     Description:
2038 :    
2039 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
2040 :    
2041 :     2. Updated config/version to 110.28
2042 :    
2043 :     3. Updated config/srcarchiveurl
2044 :    
2045 :     3. New boot files!
2046 :     ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
2047 :    
2048 :     ----------------------------------------------------------------------
2049 : blume 634 Name: Matthias Blume
2050 :     Date: 2000/05/01 19:05:00 JST
2051 :     Tag: blume-20000501-noweb
2052 :     Description:
2053 :    
2054 :     A new noweb tool has been added. The existing system is entirely
2055 :     unaffected by this, but some CM users have asked for renewed noweb
2056 :     support. Everything is documented in the CM manual.
2057 :    
2058 :     New (plugin) libraries:
2059 :    
2060 :     noweb-tool.cm
2061 :     nw-ext.cm
2062 :    
2063 :     ----------------------------------------------------------------------
2064 : dbm 633 Name: Dave MacQueen
2065 :     Date: 2000/04/30 12:40PM EDT
2066 :     Tag: dbm-20000430-bug_fixes
2067 :     Description:
2068 :    
2069 :     1. Fix for bug 1498
2070 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sig
2071 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sml
2072 :     added toRealArray function
2073 :     smlnj/src/compiler/MiscUtil/print/ppobj.sml
2074 :     added check for tag Obj.RealArray to array printing case in ppObj
2075 :    
2076 :     2. Fix for bug 1510
2077 :     smlnj/src/compiler/Semant/types/typesutil.sml
2078 :     fixed definition of dummyargs (used by equalTycon) so that
2079 :     dummy args are distinct types
2080 :    
2081 :     ----------------------------------------------------------------------
2082 : blume 629 Name: Matthias Blume
2083 : blume 632 Date: 2000/04/30 01:00:00 JST
2084 :     Tag: blume-20000430-versions
2085 :     Description:
2086 :    
2087 :     1. CM version numbering added. This is an implementation of Lal's
2088 :     proposal for adding version numbers and version checking to .cm
2089 :     files. Lal said that his proposal was just that -- a proposal.
2090 :     For the time being I went ahead and implemented it so that people
2091 :     can comment on it. Everything is completely backward-compatible
2092 :     (except for the stable library format, i.e., new bootfiles!).
2093 :    
2094 :     As usual, see the CM manual for details.
2095 :    
2096 :     2. An alternative syntax for anchored paths has been implemented.
2097 :     Dave has recently voiced the same concerns that I had when I did
2098 :     this, so there should be some support. My take is that eventually
2099 :     I will let support for the current syntax (where anchors are
2100 :     "implicit") fade out in favor of the new, explicit syntax.
2101 :     In order to be backward-compatible, both old and new syntax are
2102 :     currently supported.
2103 :    
2104 :     Again, see the CM manual for details.
2105 :    
2106 :     3. Parallel make is trying to be slightly smarter: When the master
2107 :     process finds a "bottleneck", i.e., when there is only one
2108 :     compilation unit that can be compiled and everybody else is
2109 :     waiting on it, then it will simply compile it directly instead
2110 :     of clumsily telling one of the slaves to do it.
2111 :    
2112 :     4. Support for "unsharing" added. This is necessary in order to be
2113 :     able to have two different versions of the same library running
2114 :     at the same time (e.g., for trying out a new MLRISC while still
2115 :     having the old MLRISC linked into the current compiler, etc.)
2116 :     See the CM manual.
2117 :    
2118 :     5. Simple "makedepend" functionality added for generating Makefile
2119 :     dependency information. (This is rather crude at the moment.
2120 :     Expect some changes here in the future.)
2121 :    
2122 :     6. ".fun" added as a recognized suffix for ML files. Also documented
2123 :     explicitly in the manual that the fallback behavior (unknown suffix
2124 :     -> ML file) is not an official feature!
2125 :    
2126 :     7. Small changes to the pickler for stable libraries.
2127 :    
2128 :     8. Several internal changes to CM (for cleanup/improvement).
2129 :    
2130 :    
2131 :     !!!! NEW BINFILES !!!!
2132 :    
2133 :     ----------------------------------------------------------------------
2134 :     Name: Matthias Blume
2135 : blume 631 Date: 2000/04/28 17:30:00 JST
2136 :     Tag: blume-20000428-pathconfig
2137 :     Description:
2138 :    
2139 :     1. I changed config/install.sh to remove duplicate entries from the
2140 :     lib/pathconfig file at the end. Moreover, the final version of
2141 :     lib/pathconfig is sorted alphabetically. The same (sorting) is done
2142 :     in src/system/installml.
2143 :    
2144 :     2. The config/install.sh script now consistently uses relative
2145 :     pathnames in lib/pathconfig whenever the anchor is in the lib
2146 :     directory. (So far this was true for the libraries that come
2147 :     pre-compiled and bundled as part of the bootfiles but not for
2148 :     libraries that are compiled by the script itself.)
2149 :    
2150 :     ----------------------------------------------------------------------
2151 :     Name: Matthias Blume
2152 : blume 629 Date: 2000/04/26 13:10:00 JST
2153 :     Tag: blume-20000426-fun_suffix
2154 :     Description:
2155 :    
2156 :     Added ".fun" as a recognized file name suffix (for ML code).
2157 :    
2158 :     ----------------------------------------------------------------------
2159 : leunga 628 Name: Allen Leung
2160 :     Date: 2000/04/25 17:00:00 EST
2161 :     Tag: leunga-20000425-alpha-ra
2162 :     Description:
2163 :    
2164 :     1. Alpha
2165 :    
2166 :     PSEUDOARITH was missing in AlphaRewrite. This causes an endless loop
2167 :     in C--.
2168 :    
2169 :     2. RA
2170 :    
2171 :     Added a flag "ra-dump-size" to print out the size of the flowgraph
2172 :     and the interference graph.
2173 :    
2174 :     ----------------------------------------------------------------------
2175 : dbm 627 Name: Dave MacQueen
2176 :     Date: 2000/04/25/
2177 :     Tag: dbm-20000425-mlyacc_doc_examples
2178 :     Description:
2179 :     Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
2180 :     Updated all three examples in src/ml-yacc/examples to run
2181 :     under 110.* using CM.make.
2182 :    
2183 :     ----------------------------------------------------------------------
2184 : leunga 624 Name: Allen Leung
2185 :     Date: 2000/04/20 23:04:00 EST
2186 :     Tag: leunga-20000420-ssa-c---stuff
2187 :     Description:
2188 :    
2189 :     This update synchronizes my repository with Yale's. Most of these
2190 :     changes, however, do not affect SML/NJ at all (the RA is an exception).
2191 :    
2192 :     1. Register Allocator
2193 :    
2194 :     a. An improvement in the interference graph construction:
2195 :     Given a copy
2196 :    
2197 :     s <- t
2198 :    
2199 : leunga 628 no interference edge between s and t is added for this definition of s.
2200 : leunga 624
2201 :     b. I've added two new spill heuristic modules that Fermin and I developed
2202 :     (in the new library RA.cm). These are unused in SML/NJ but maybe
2203 :     useful for others (Moby?)
2204 :    
2205 :     2. X86
2206 :    
2207 :     a. Various fixes in the backend provided by Fermin [C--] and Lal.
2208 :    
2209 :     3. Alpha
2210 :    
2211 :     a. Added the BSR instruction and code generation that goes with it [C--]
2212 :     b. Other fixes too numerous to recount provided by Fermin [C--]
2213 :    
2214 :     4. Regmaps
2215 :    
2216 :     a. The regmaps are not initialized with the identity physical bindings
2217 :     at creation time. This is unneeded.
2218 :    
2219 :     5. MLRISC Optimizations
2220 :    
2221 :     a. The DJ-Graph module can now compute the iterated dominance frontiers
2222 :     intersects with liveness incrementally in linear time! Woohoo!
2223 :     This is now used in my new SSA construction algorithm.
2224 :    
2225 :     b. THe branch reorganization module is now smarter about linear chains of
2226 :     basic blocks.
2227 :    
2228 :    
2229 :     ----------------------------------------------------------------------
2230 : blume 615 Name: Matthias Blume
2231 :     Date: 2000/04/12 13:52:00 JST
2232 :     Tag: blume_main_v110p27_1
2233 :     Description:
2234 :    
2235 :     Changed install.sh script to handle archive files without version number
2236 :     and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
2237 :     name of the boot file archive.
2238 :    
2239 :     ----------------------------------------------------------------------
2240 : dbm 607 Name: Dave MacQueen
2241 :     Date: 2000/04/09 14:00 EDT
2242 :     Tag: dbm-20000410-Version_110_27
2243 :     Description:
2244 :    
2245 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
2246 :    
2247 :     2. Updated src/config/version to 110.27
2248 :    
2249 :     3. New boot files!
2250 :    
2251 :     ----------------------------------------------------------------------
2252 : leunga 606 Name: Allen Leung
2253 :     Date: 2000/04/09 19:09:00 EST
2254 :     Tag: leunga-20000409-misc
2255 :     Description:
2256 :    
2257 :     1. Yet another fix for x86 assembly for idivl, imull, mull and friends.
2258 :    
2259 :     2. Miscellaneous improvements to MLRISC (unused in sml/nj)
2260 :    
2261 :     ----------------------------------------------------------------------
2262 : monnier 605 Name: Stefan
2263 :     Date: 2000/04/07 10:00:00 EDT
2264 :     Tag: monnier-20000406-branch-handling
2265 :     Description:
2266 :    
2267 :     Improved handling of branches (mostly those generated from
2268 :     polymorphic equality), removed switchoff and changed the
2269 :     default optimization settings (more cpsopt and less flintopt).
2270 :    
2271 :     ----------------------------------------------------------------------
2272 : leunga 601 Name: Allen Leung
2273 : leunga 602 Date: 2000/04/06 01:30:00 EST
2274 :     Tag: leunga-20000406-peephole-x86-SSA-2
2275 :     Description:
2276 :    
2277 :     Forgot a few files.
2278 :    
2279 :     ----------------------------------------------------------------------
2280 :     Name: Allen Leung
2281 : leunga 601 Date: 2000/04/06 00:36:00 EST
2282 :     Tag: leunga-20000406-peephole-x86-SSA
2283 :     Description:
2284 :    
2285 :     1. New Peephole code
2286 :    
2287 :     2. Minor improvement to X86 instruction selection
2288 :    
2289 :     3. Various fixes to SSA and machine description -> code translator
2290 :    
2291 :     ----------------------------------------------------------------------
2292 : blume 595 Name: Matthias Blume
2293 :     Date: 2000/04/05 12:30:00 JST
2294 :     Tag: blume_main_v110p26p2_3
2295 :     Description:
2296 :    
2297 :     This update just merges three minor cosmetic updates to CM's sources
2298 :     to get ready for the 110.27 code freeze on Friday. No functionality
2299 :     has changed.
2300 :    
2301 :     ----------------------------------------------------------------------
2302 : leunga 593 Name: Allen Leung
2303 : leunga 594 Date: 2000/04/04 19:39:00 EST
2304 :     Tag: leunga-20000404-x86-asm
2305 :     Description:
2306 :    
2307 :     1. Fixed a problem in X86 assembly.
2308 :    
2309 :     Things like
2310 :    
2311 :     jmp %eax
2312 :     jmp (%eax)
2313 :    
2314 :     should be output as
2315 :    
2316 :     jmp *%eax
2317 :     jmp *(%eax)
2318 :    
2319 :     2. Assembly output
2320 :    
2321 :     Added a new flag
2322 :    
2323 :     "asm-indent-copies" (default to false)
2324 :    
2325 :     When this flag is on, parallel copies will be indented an extra level.
2326 :    
2327 :     ----------------------------------------------------------------------
2328 :     Name: Allen Leung
2329 : leunga 593 Date: 2000/04/04 03:18:00 EST
2330 :     Tag: leunga-20000404-C--Moby
2331 :     Description:
2332 :    
2333 :     All of these fixes are related to C--, Moby, and my own optimization
2334 :     stuff; so they shouldn't affect SML/NJ.
2335 :    
2336 :     1. X86
2337 :    
2338 :     Various fixes related floating point, and extensions.
2339 :    
2340 :     2. Alpha
2341 :    
2342 :     Some extra patterns related to loads with signed/zero extension
2343 :     provided by Fermin.
2344 :    
2345 :     3. Assembly
2346 :    
2347 : monnier 659 When generating assembly, resolve the value of client defined constants,
2348 : leunga 593 instead of generating symbolic values. This is controlled by the
2349 :     new flag "asm-resolve-constants", which is default to true.
2350 :    
2351 :     4. Machine Descriptions
2352 :    
2353 :     a. The precedence parser was slightly broken when parsing infixr symbols.
2354 :     b. The type generalizing code had the bound variables reversed, resulting
2355 :     in a problem during arity raising.
2356 :     c. Various fixes in machine descriptions.
2357 :    
2358 :     ----------------------------------------------------------------------
2359 : blume 592 Name: Matthias Blume
2360 :     Date: 2000/04/03 16:05:00 JST
2361 :     Tag: blume_main_v110p26p2_2
2362 :     Description:
2363 :    
2364 :     I eliminated coreEnv from compInfo. Access to the "Core" structure is
2365 :     now done via the ordinary static environment that is context to each
2366 :     compilation unit.
2367 :    
2368 :     To this end, I arranged that instead of "structure Core" as "structure
2369 :     _Core" is bound in the pervasive environment. Core access is done via
2370 : monnier 659 _Core (which can never be accidentally rebound because _Core is not a
2371 : blume 592 legal surface-syntax symbol).
2372 :    
2373 :     The current solution is much cleaner because the core environment is
2374 :     now simply part of the pervasive environment which is part of every
2375 :     compilation unit's context anyway. In particular, this eliminates all
2376 :     special-case handling that was necessary until now in order to deal
2377 :     with dynamic and symbolic parts of the core environment.
2378 :    
2379 :     Remaining hackery (to bind the "magic" symbol _Core) is localized in the
2380 : monnier 659 compilation manager's bootstrap compiler (actually: in the "init group"
2381 : blume 592 handling). See the comments in src/system/smlnj/init/init.cmi for
2382 :     more details.
2383 :    
2384 :     I also tried to track down all mentions of "Core" (as string argument
2385 :     to Symbol.strSymbol) in the compiler and replaced them with a
2386 :     reference to the new CoreSym.coreSym. Seems cleaner since the actual
2387 :     name appears in one place only.
2388 :    
2389 :     Binfile and bootfile format have not changed, but the switchover from
2390 :     the old "init.cmi" to the new one is a bit tricky, so I supplied new
2391 :     bootfiles anyway.
2392 :    
2393 :     ----------------------------------------------------------------------
2394 : leunga 591 Name: Allen Leung
2395 :     Date: 2000/04/02 21:17:00 EST
2396 :     Tag: leunga-20000402-mltree
2397 :     Description:
2398 : leunga 585
2399 : leunga 591 1. Renamed the constructor CALL in MLTREE by popular demand.
2400 :     2. Added a bunch of files from my repository. These are currently
2401 :     used by other non-SMLNJ backends.
2402 :    
2403 : leunga 576 ----------------------------------------------------------------------
2404 : leunga 590 Name: Allen Leung
2405 :     Date: 2000/03/31 21:15:00 EST
2406 :     Tag: leunga-20000331-aliasing
2407 :     Description:
2408 :    
2409 :     This update contains a rewritten (and hopefully more correct) module
2410 :     for extracting aliasing information from CPS.
2411 :    
2412 :     To turn on this feature:
2413 :    
2414 :     Compiler.Control.CG.memDisambiguate := true
2415 :    
2416 :     To pretty print the region information with assembly
2417 :    
2418 :     Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
2419 :    
2420 :     To control how many levels of aliasing information are printed, use:
2421 :    
2422 :     Compiler.Control.MLRISC.getInt "points-to-show-level" := n
2423 :    
2424 :     The default of n is 3.
2425 :    
2426 :     ----------------------------------------------------------------------
2427 : dbm 589 Name: David MacQueen
2428 :     Date: 2000/03/31 11:15:00 EST
2429 :     Tag: dbm-20000331-runtime_fix
2430 :     Description:
2431 :    
2432 :     This update contains:
2433 :    
2434 :     1. runtime/c-lib/c-libraries.c
2435 :     includes added in revision 1.2 caused compilation errors on hppa-hpux
2436 :    
2437 :     2. fix for bug 1556
2438 :     system/Basis/Implementation/NJ/internal-signals.sml
2439 :    
2440 :     ----------------------------------------------------------------------
2441 : blume 587 Name: Matthias Blume
2442 : blume 588 Date: 2000/03/31 18:00:00 JST
2443 :     Tag: blume_main_v110p26p2_1
2444 :     Description:
2445 :    
2446 :     This update contains:
2447 :    
2448 :     1. A small change to CM's handling of stable libraries:
2449 :     CM now maintains one "global" modmap that is used for all stable
2450 :     libraries. The use of such a global modmap maximizes sharing and
2451 :     minimizes the need for re-traversing parts of environments during
2452 :     modmap construction. (However, this has minor impact since modmap
2453 :     construction seems to account for just one percent or less of total
2454 :     compile time.)
2455 :    
2456 :     2. I added a "genmap" phase to the statistics. This is where I got the
2457 :     "one percent" number (see above).
2458 :    
2459 :     3. CM's new tool parameter mechanism just became _even_ better. :)
2460 :     - The parser understands named parameters and recursive options.
2461 :     - The "make" and "shell" tools use these new features.
2462 :     (This makes it a lot easier to cascade these tools.)
2463 :     - There is a small syntax change: named parameters use a
2464 :    
2465 :     <name> : ( <option> ... ) or
2466 :     <name> : <string>
2467 :    
2468 :     syntax. Previously, named parameters were implemented in an
2469 :     ad-hoc fashion by each tool individually (by parsing strings)
2470 :     and had the form
2471 :    
2472 :     <name>=<string>
2473 :    
2474 :     See the CM manual for a full description of these issues.
2475 :    
2476 :     ----------------------------------------------------------------------
2477 :     Name: Matthias Blume
2478 : blume 587 Date: 2000/03/30 18:00:00 JST
2479 :     Tag: blume_main_v110p26p2_0
2480 :     Description:
2481 :    
2482 :     !!!!! WARNING !!!!!!
2483 :     !! New binfiles !!
2484 :     !!!!!!!!!!!!!!!!!!!!
2485 :    
2486 :     This update contains:
2487 :    
2488 :     1. Moderate changes to CM:
2489 :    
2490 :     - Changes to CM's tools mechanism. In particular, it is now possible
2491 :     to have tools that accept additional "command line" parameters
2492 :     (specified in the .cm file at each instance where the tool's class is
2493 :     used).
2494 :    
2495 : monnier 659 This was done to accommodate the new "make" and "shell" tools which
2496 :     facilitate fairly seamless hookup to portions of code managed using
2497 : blume 587 Makefiles or Shell scripts.
2498 :    
2499 :     There are no classes "shared" or "private" anymore. Instead, the
2500 :     sharing annotation is now a parameter to the "sml" class.
2501 :    
2502 :     There is a bit of generic machinery for implementing one's own
2503 :     tools that accept command-line parameters. However, I am not yet fully
2504 :     satisfied with that part, so expect changes here in the future.
2505 :    
2506 :     All existing tools are described in the CM manual.
2507 :    
2508 : monnier 659 - Slightly better error handling. (CM now suppresses many followup
2509 : blume 587 error messages that tended to be more annoying than helpful.)
2510 :    
2511 :     2. Major changes to the compiler's static environment data structures.
2512 :    
2513 :     - no CMStaticEnv anymore.
2514 :     - no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
2515 :     but it is called Environment), no conversions between different
2516 :     kinds of static environments
2517 :    
2518 :     - There is still a notion of a "modmap", but such modmaps are generated
2519 :     on demand at the time when they are needed. This sounds slow, but I
2520 :     sped up the code that generates modmaps enough for this not to lead to
2521 :     a slowdown of the compiler (at least I didn't detect any).
2522 :    
2523 :     - To facilitate rapid modmap generation, static environments now
2524 :     contain an (optional) "modtree" structure. Modtree annotations are
2525 :     constructed by the unpickler during unpickling. (This means that
2526 :     the elaborator does not have to worry about modtrees at all.)
2527 :     Modtrees have the advantage that they are compositional in the same
2528 :     way as the environment data structure itself is compositional.
2529 :     As a result, modtrees never hang on to parts of an environment that
2530 :     has already been rendered "stale" by filtering or rebinding.
2531 :    
2532 :     - I went through many, many trials and errors before arriving at the
2533 :     current solution. (The initial idea of "linkpaths" did not work.)
2534 :     But the result of all this is that I have touched a lot of files that
2535 :     depend on the "modules" and "types" data structures (most of the
2536 :     elaborator). There were a lot of changes during my "linkpath" trials
2537 :     that could have been reverted to their original state but weren't.
2538 :     Please, don't be too harsh on me for messing with this code a bit more
2539 :     than what was strictly necessary... (I _did_ resist the tempation
2540 :     of doing any "global reformatting" to avoid an untimely death at
2541 :     Dave's hands. :)
2542 :    
2543 :     - One positive aspect of the previous point: At least I made sure that
2544 :     all files that I touched now compile without warnings (other than
2545 :     "polyEqual").
2546 :    
2547 :     - compiler now tends to run "leaner" (i.e., ties up less memory in
2548 :     redundant modmaps)
2549 :    
2550 :     ----------------------------------------------------------------------
2551 : leunga 580 Name: Allen Leung
2552 : leunga 585 Date: 2000/03/29 18:00:00
2553 :     Tag: leunga-20000327-mlriscGen_hppa_alpha_x86
2554 : leunga 586 Boot files (optional): ftp://react-ilp.cs.nyu.edu/leunga/110.26.1-sml.boot.x86-unix-20000330.tar.gz
2555 : leunga 585 Description:
2556 :    
2557 :     This update contains *MAJOR* changes to the way code is generated from CPS
2558 :     in the module mlriscGen, and in various backend modules.
2559 :    
2560 :     CHANGES
2561 :     =======
2562 :    
2563 :     1. MLRiscGen: forward propagation fix.
2564 :    
2565 :     There was a bug in forward propagation introduced at about the same time
2566 :     as the MLRISC x86 backend, which prohibits coalescing to be
2567 :     performed effectively in loops.
2568 :    
2569 :     Effect: speed up of loops in RISC architectures.
2570 :     By itself, this actually slowed down certain benchmarks on the x86.
2571 :    
2572 :     2. MLRiscGen: forward propagating addresses from consing.
2573 :    
2574 :     I've changed the way consing code is generated. Basically I separated
2575 :     out the initialization part:
2576 :    
2577 :     store tag, offset(allocptr)
2578 :     store elem1, offset+4(allocptr)
2579 :     store elem2, offset+8(allocptr)
2580 :     ...
2581 :     store elemn, offset+4n(allocptr)
2582 :    
2583 :     and the address computation part:
2584 :    
2585 :     celladdr <- offset+4+alloctpr
2586 :    
2587 :     and move the address computation part
2588 :    
2589 :     Effect: register pressure is generally lower as a result. This
2590 :     makes compilation of certain expressions much faster, such as
2591 :     long lists with non-trivial elements.
2592 :    
2593 :     [(0,0), (0,0), .... (0,0)]
2594 :    
2595 :     3. MLRiscGen: base pointer elimination.
2596 :    
2597 :     As part of the linkage mechanism, we generate the sequence:
2598 :    
2599 :     L: ... <- start of the code fragment
2600 :    
2601 :     L1:
2602 :     base pointer <- linkreg - L1 + L
2603 :    
2604 :     The base pointer was then used for computing relocatable addresses
2605 :     in the code fragment. Frequently (such as in lots of continuations)
2606 :     this is not needed. We now eliminate this sequence whenever possible.
2607 :    
2608 :     For compile time efficiency, I'm using a very stupid local heuristic.
2609 :     But in general, this should be done as a control flow analysis.
2610 :    
2611 :     Effect: Smaller code size. Speed up of most programs.
2612 :    
2613 :     4. Hppa back end
2614 :    
2615 :     Long jumps in span dependence resolution used to depend on the existence
2616 :     of the base pointer.
2617 :    
2618 :     A jump to a long label L was expanded into the following sequence:
2619 :    
2620 :     LDIL %hi(L-8192), %r29
2621 :     LDO %lo(L-8192)(%r29), %r29
2622 :     ADD %r29, baseptr, %r29
2623 :     BV,n %r0(%r29)
2624 :    
2625 :     In the presence of change (3) above, this will not work. I've changed
2626 :     it so that the following sequence of instructions are generated, which
2627 :     doesn't mention the base pointer at all:
2628 :    
2629 :     BL,n L', %r29 /* branch and link, L' + 4 -> %r29 */
2630 :     L': ADDIL L-(L'+4), %r29 /* Compute address of L */
2631 :     BV,n %r0(%r29) /* Jump */
2632 :    
2633 :     5. Alpha back end
2634 :    
2635 :     New alpha instructions LDB/LDW have been added, as per Fermin's
2636 :     suggestions. This is unrelated to all other changes.
2637 :    
2638 :     6. X86 back end
2639 :    
2640 :     I've changed andl to testl in the floating point test sequence
2641 :     whenever appropriate. The Intel optimization guide states that
2642 : monnier 659 testl is preferable to andl.
2643 : leunga 585
2644 :     7. RA (x86 only)
2645 :    
2646 :     I've improved the spill propagation algorithm, using an approximation
2647 :     of maximal weighted independent sets. This seems to be necessary to
2648 :     alleviate the negative effect in light of the slow down in (1).
2649 :    
2650 :     I'll write down the algorithm one of these days.
2651 :    
2652 :     8. MLRiscGen: frequencies
2653 :    
2654 :     I've added an annotation that states that all call gc blocks have zero
2655 :     execution frequencies. This improves register allocation on the x86.
2656 :    
2657 :     BENCHMARKS
2658 :     ==========
2659 :    
2660 :     I've only perform the comparison on 110.25.
2661 :    
2662 :     The platforms are:
2663 :    
2664 :     HPPA A four processor HP machine (E9000) with 5G of memory.
2665 :     X86 A 300Hhz Pentium II with 128M of memory, and
2666 :     SPARC An Ultra sparc 2 with 512M of memory.
2667 :    
2668 :     I used the following parameters for the SML benchmarks:
2669 :    
2670 :     @SMLalloc
2671 :     HPPA 256k
2672 :     SPARC 512k
2673 :     X86 256k
2674 :    
2675 :     COMPILATION TIME
2676 :     ----------------
2677 :     Here are the numbers comparing the compilation times of the compilers.
2678 :     I've only compared 110.25 compiling the new sources versus
2679 :     a fixpoint version of the new compiler compiling the same.
2680 :    
2681 :     110.25 New
2682 :     Total Time in RA Spill+Reload Total Time In RA Spill+Reload
2683 :     HPPA 627s 116s 2684+3584 599s 95s 1003+1879
2684 :     SPARC 892s 173s 2891+3870 708s 116s 1004+1880
2685 :     X86 999s 315s 94006+130691 987s 296s 108877+141957
2686 :    
2687 :     110.25 New
2688 :     Code Size Code Size
2689 :     HPPA 8596736 8561421
2690 :     SPARC 8974299 8785143
2691 :     X86 9029180 8716783
2692 :    
2693 :     So in summary, things are at least as good as before. Dramatic
2694 :     reduction in compilation is obtained on the Sparc; I can't explain it,
2695 :     but it is reproducible. Perhaps someone should try to reproduce this
2696 :     on their own machines.
2697 :    
2698 :     SML BENCHMARKS
2699 :     --------------
2700 :    
2701 :     On the average, all benchmarks perform at least as well as before.
2702 :    
2703 :     HPPA Compilation Time Spill+Reload Run Time
2704 :     110.25 New 110.25 New 110.25 New
2705 :    
2706 :     barnesHut 3.158 3.015 4.75% 1+1 0+0 2.980 2.922 2.00%
2707 :     boyer 6.152 5.708 7.77% 0+0 0+0 0.218 0.213 2.34%
2708 :     count-graphs 1.168 1.120 4.32% 0+0 0+0 22.705 23.073 -1.60%
2709 :     fft 0.877 0.792 10.74% 1+3 1+3 0.602 0.587 2.56%
2710 :     knuthBendix 3.180 2.857 11.32% 0+0 0+0 0.675 0.662 2.02%
2711 :     lexgen 6.190 5.290 17.01% 0+0 0+0 0.913 0.788 15.86%
2712 :     life 0.803 0.703 14.22% 25+25 0+0 0.153 0.140 9.52%
2713 :     logic 2.048 2.007 2.08% 6+6 1+1 4.133 4.008 3.12%
2714 :     mandelbrot 0.077 0.080 -4.17% 0+0 0+0 0.765 0.712 7.49%
2715 :     mlyacc 22.932 20.937 9.53% 154+181 32+57 0.468 0.430 8.91%
2716 :     nucleic 5.183 5.060 2.44% 2+2 0+0 0.125 0.120 4.17%
2717 :     ratio-regions 3.357 3.142 6.84% 0+0 0+0 116.225 113.173 2.70%
2718 :     ray 1.283 1.290 -0.52% 0+0 0+0 2.887 2.855 1.11%
2719 :     simple 6.307 6.032 4.56% 28+30 5+7 3.705 3.658 1.28%
2720 :     tsp 0.888 0.862 3.09% 0+0 0+0 7.040 6.893 2.13%
2721 :     vliw 24.378 23.455 3.94% 106+127 25+45 2.758 2.707 1.91%
2722 :     --------------------------------------------------------------------------
2723 :     Average 6.12% 4.09%
2724 :    
2725 :     SPARC Compilation Time Spill+Reload Run Time
2726 :     110.25 New 110.25 New 110.25 New
2727 :    
2728 :     barnesHut 3.778 3.592 5.20% 2+2 0+0 3.648 3.453 5.65%
2729 :     boyer 6.632 6.110 8.54% 0+0 0+0 0.258 0.242 6.90%
2730 :     count-graphs 1.435 1.325 8.30% 0+0 0+0 33.672 34.737 -3.07%
2731 :     fft 0.980 0.940 4.26% 3+9 2+6 0.838 0.827 1.41%
2732 :     knuthBendix 3.590 3.138 14.39% 0+0 0+0 0.962 0.967 -0.52%
2733 :     lexgen 6.593 6.072 8.59% 1+1 0+0 1.077 1.078 -0.15%
2734 :     life 0.972 0.868 11.90% 26+26 0+0 0.143 0.140 2.38%
2735 :     logic 2.525 2.387 5.80% 7+7 1+1 5.625 5.158 9.05%
2736 :     mandelbrot 0.090 0.093 -3.57% 0+0 0+0 0.855 0.728 17.39%
2737 :     mlyacc 26.732 23.827 12.19% 162+189 32+57 0.550 0.560 -1.79%
2738 :     nucleic 6.233 6.197 0.59% 3+3 0+0 0.163 0.173 -5.77%
2739 :     ratio-regions 3.780 3.507 7.79% 0+0 0+0 133.993 131.035 2.26%
2740 :     ray 1.595 1.550 2.90% 1+1 0+0 3.440 3.418 0.63%
2741 :     simple 6.972 6.487 7.48% 29+32 5+7 3.523 3.525 -0.05%
2742 :     tsp 1.115 1.063 4.86% 0+0 0+0 7.393 7.265 1.77%
2743 :     vliw 27.765 24.818 11.87% 110+135 25+45 2.265 2.135 6.09%
2744 :     ----------------------------------------------------------------------------
2745 :     Average 6.94% 2.64%
2746 :    
2747 :     X86 Compilation Time Spill+Reload Run Time
2748 :     110.25 New 110.25 New 110.25 New
2749 :    
2750 :     barnesHut 5.530 5.420 2.03% 593+893 597+915 3.532 3.440 2.66%
2751 :     boyer 8.768 7.747 13.19% 493+199 301+289 0.327 0.297 10.11%
2752 :     count-graphs 2.040 2.010 1.49% 298+394 315+457 26.578 28.660 -7.26%
2753 :     fft 1.327 1.302 1.92% 112+209 115+210 1.055 0.962 9.71%
2754 :     knuthBendix 5.218 5.475 -4.69% 451+598 510+650 0.928 0.932 -0.36%
2755 :     lexgen 9.970 9.623 3.60% 1014+841 1157+885 0.947 0.928 1.97%
2756 :     life 1.183 1.183 0.00% 162+182 145+148 0.127 0.103 22.58%
2757 :     logic 3.285 3.512 -6.45% 514+684 591+836 5.682 5.577 1.88%
2758 :     mandelbrot 0.147 0.143 2.33% 38+41 33+54 0.703 0.690 1.93%
2759 :     mlyacc 35.457 32.763 8.22% 3496+4564 3611+4860 0.552 0.550 0.30%
2760 :     nucleic 7.100 6.888 3.07% 239+168 201+158 0.175 0.173 0.96%
2761 :     ratio-regions 6.388 6.843 -6.65% 1182+257 981+300 120.142 120.345 -0.17%
2762 :     ray 2.332 2.338 -0.29% 346+398 402+494 3.593 3.540 1.51%
2763 :     simple 9.912 9.903 0.08% 1475+941 1579+1168 3.057 3.178 -3.83%
2764 :     tsp 1.623 1.532 5.98% 266+200 250+211 8.045 7.878 2.12%
2765 :     vliw 33.947 35.470 -4.29% 2629+2774 2877+3171 2.072 1.890 9.61%
2766 :     ----------------------------------------------------------------------------
2767 :     Average 1.22% 3.36%
2768 :    
2769 :     ----------------------------------------------------------------------
2770 :     Name: Allen Leung
2771 : leunga 583 Date: 2000/03/23 16:25:00
2772 :     Tag: leunga-20000323-fix_x86_alpha
2773 :     Description:
2774 :    
2775 :     1. X86 fixes/changes
2776 :    
2777 :     a. The old code generated for SETcc was completely wrong.
2778 :     The Intel optimization guide is VERY misleading.
2779 :    
2780 :     2. ALPHA fixes/changes
2781 :    
2782 :     a. Added the instructions LDBU, LDWU, STB, STW as per Fermin's suggestion.
2783 :     b. Added a new mode byteWordLoadStores to the functor parameter to Alpha()
2784 :     c. Added reassociation code for address computation.
2785 :    
2786 :     ----------------------------------------------------------------------
2787 :     Name: Allen Leung
2788 : leunga 580 Date: 2000/03/22 01:23:00
2789 :     Tag: leunga-20000322-fix_x86_hppa_ra
2790 :     Description:
2791 :    
2792 :     1. X86 fixes/changes
2793 :    
2794 :     a. x86Rewrite bug with MUL3 (found by Lal)
2795 :     b. Added the instructions FSTS, FSTL
2796 :    
2797 :     2. PA-RISC fixes/changes
2798 :    
2799 :     a. B label should not be a delay slot candidate! Why did this work?
2800 :     b. ADDT(32, REG(32, r), LI n) now generates one instruction instead of two,
2801 :     as it should be.
2802 :     c. The assembly syntax for fstds and fstdd was wrong.
2803 :     d. Added the composite instruction COMICLR/LDO, which is the immediate
2804 :     operand variant of COMCLR/LDO.
2805 :    
2806 :     3. Generic MLRISC
2807 :    
2808 :     a. shuffle.sml rewritten to be slightly more efficient
2809 :     b. DIV bug in mltree-simplify fixed (found by Fermin)
2810 :    
2811 :     4. Register Allocator
2812 :    
2813 :     a. I now release the interference graph earlier during spilling.
2814 :     May improve memory usage.
2815 :    
2816 :     ----------------------------------------------------------------------
2817 : blume 577 Name: Matthias Blume
2818 : blume 578 Date: 2000/03/14 14:15:32
2819 :     Tag: blume_main_v110p26p1_2
2820 :     Description:
2821 :    
2822 :     1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
2823 :     additional argument called "template" which is an optional string that
2824 : monnier 659 specifies the layout of the tool command line. See the CM manual for
2825 : blume 578 explanation.
2826 :    
2827 : monnier 659 2. A special-purpose tool can be "registered" by simply dropping the
2828 : blume 578 corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
2829 :     directory where the .cm file lives that uses this tool. (The
2830 :     behavior/misfeature until now was to look for the tool description
2831 :     files in the current working directory.) As before, tool description
2832 :     files could also be anchored -- in which case they can live anywhere
2833 :     they like. Following the recent e-mail discussion, this change should
2834 :     make it easier to have special-purpose tools that are shipped together
2835 :     with the sources of the program that uses them.
2836 :    
2837 :     ----------------------------------------------------------------------
2838 :     Name: Matthias Blume
2839 : blume 577 Date: 2000/03/10 07:48:34
2840 :     Tag: blume_main_v110p26p1_1
2841 :     Description:
2842 :    
2843 :     I added a re-written version of Dave's fixpt script to src/system.
2844 :     Changes relative to the original version:
2845 :     - sh-ified (not everybody has ksh)
2846 :     - automatically figures out which architecture it runs on
2847 :     - uses ./makeml a bit more cleverly
2848 :     - never invokes ./installml (and, thus, does not clobber your
2849 :     good and working installation of sml in case something goes wrong)
2850 :     - accepts max iteration count using option "-iter <n>"
2851 :     - accepts a "base" name using option "-base <base>"
2852 :    
2853 :     It does not build any extraneous heap images but directly rebuilds
2854 :     bin- and boot-hierarchies using makeml's "-rebuild" switch. Finally,
2855 :     it can incorporate existing bin- and boot- hierarchies. For example,
2856 :     suppose the base is set to "sml" (which is the default). Then it
2857 :     successively builds
2858 :    
2859 :     sml.bin.<arch>-unix and sml.boot.<arch>-unix
2860 :     then sml1.bin.<arch>-unix and sml1.boot.<arch>-unix
2861 :     then sml2.bin.<arch>-unix and sml2.boot.<arch>-unix
2862 :     ...
2863 :     then sml<n>.bin.<arch>-unix and sml<n>.boot.<arch>-unix
2864 :    
2865 :     and so on. If any of these already exist, it will just use what's
2866 :     there. In particular, many people will have the initial set of bin
2867 :     and boot files around, so this saves time for at least one full
2868 :     rebuild. Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
2869 :     <k>=1,2,... is normally not a good idea when invoking fixpt. However,
2870 :     they might be the result of an earlier partial run of fixpt (which
2871 : monnier 659 perhaps got accidentally killed). In this case, fixpt will quickly
2872 : blume 577 move through what exists before continuing where it left off earlier,
2873 :     and, thus, saves a lot of time.
2874 :    
2875 :     ----------------------------------------------------------------------
2876 : leunga 576 Name: Allen Leung
2877 :     Date: 00/03/10 02:20:00
2878 :     Tag: leunga-20000310-fix_x86_asm_ra
2879 :     Description:
2880 : dbm 570
2881 : leunga 576 More assembly output problems involving the indexed addressing mode
2882 :     on the x86 have been found and corrected. Thanks to Fermin Reig for the
2883 :     fix.
2884 :    
2885 :     The interface and implementation of the register allocator have been changed
2886 :     slightly to accommodate the possibility to skip the register allocation
2887 :     phases completely and go directly to memory allocation. This is needed
2888 :     for C-- use.
2889 :    
2890 : dbm 570 ----------------------------------------------------------------------
2891 : blume 572 Name: Matthias Blume
2892 : blume 575 Date: 00/03/09 10:23:53
2893 :     Tag: blume_main_v110p26p1_0
2894 :     Description:
2895 :    
2896 :     * Complete re-organization of library names. Many libraries have been
2897 :     consolidated so that they share the same path anchor. For example,
2898 :     all MLRISC-related libraries are anchored at MLRISC, most libraries that
2899 :     are SML/NJ-specific are under "smlnj". Notice that names like
2900 :     host-cmb.cm or host-compiler.cm no longer exist. See system/README
2901 :     for a complete description of the new naming scheme. Quick reference:
2902 :    
2903 :     host-cmb.cm -> smlnj/cmb.cm
2904 :     host-compiler.cm -> smlnj/compiler.cm
2905 :     full-cm.cm -> smlnj/cm.cm
2906 :     <arch>-<os>.cm -> smlnj/cmb/<arch>-<os>.cm
2907 :     <arch>-compiler.cm -> smlnj/compiler/<arch>.cm
2908 :    
2909 :     * Bug fixes in CM.
2910 :     - exceptions in user code are being passed through (i.e., reach top level)
2911 :     - more bugs in paranoia mode fixed
2912 :     - bug related to checking group owners fixed
2913 :    
2914 :     * New install.sh script that automagically fetches archive files:
2915 :     The new file config/srcarchiveurl must contain the URL of the
2916 :     (remote) directory that contains bin files (or other source archives).
2917 :     If install.sh does not find the archive locally, it tries to get
2918 :     it from that remote directory.
2919 :     This should simplify installation further: For machines that have
2920 :     access to the internet, just fetch <version>-config.tgz, unpack it,
2921 : monnier 659 edit config/targets, and go (run config/install.sh). The script will
2922 : blume 575 fetch everything else that it might need all by itself.
2923 :    
2924 :     For CVS users, this mechanism is not relevant for source archives, but
2925 :     it is convenient for getting new sets of binfiles.
2926 :    
2927 :     Archives should be tar files compressed with either gzip, compress, or
2928 :     bzip2. The script recognizes .tgz, .tar, tar.gz, tz, .tar.Z, and .tar.bz2.
2929 :    
2930 :     ----------------------------------------------------------------------
2931 :     Name: Matthias Blume
2932 : blume 572 Date: 2000/03/07 04:01:04
2933 :     Tag: blume_main_v110_26_2
2934 : dbm 570 Description:
2935 : blume 572 - size info in BOOTLIST
2936 :     * no fixed upper limits for number of bootfiles or length of
2937 :     bootfile names in runtime
2938 :     * falling back to old behavior if no BOOTLIST size info found
2939 :     - allocation size heuristics in .run-sml
2940 :     * tries to read cache size from /proc/cpuinfo (this is important for
2941 :     small-cache Celeron systems!)
2942 :     - install.sh robustified
2943 :     - CM manual updates
2944 :     - paranoid mode
2945 :     * no more CMB.deliver() (i.e., all done by CMB.make())
2946 :     * can re-use existing sml.boot.* files
2947 :     * init.cmi now treated as library
2948 :     * library stamps for consistency checks
2949 :     - sml.boot.<arch>-<os>/PIDMAP file
2950 :     * This file is read by the CM startup code. This is used to minimize
2951 :     the amount of dynamic state that needs to be stowed away for the
2952 :     purpose of sharing between interactive system and user code.
2953 :     - CM.Anchor.anchor instead of CM.Anchor.{set,cancel}
2954 :     * Upon request by Elsa. Anchors now controlled by get-set-pair
2955 :     like most other CM state variables.
2956 :     - Compiler.CMSA eliminated
2957 :     * No longer supported by CM anyway.
2958 :     - fixed bugs in pickler that kept biting Stefan
2959 :     * past refs to past refs (was caused by the possibility that
2960 :     ad-hoc sharing is more discriminating than hash-cons sharing)
2961 :     * integer overflow on LargeInt.minInt
2962 :     - ml-{lex,yacc} build scripts now use new mechanism
2963 :     for building standalone programs
2964 :     - fixed several gcc -Wall warnings that were caused by missing header
2965 :     files, missing initializations, etc., in runtime (not all warnings
2966 :     eliminated, though)

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