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

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Original Path: sml/trunk/HISTORY

1 : dbm 570 This is the HISTORY file for the Yale SML/NJ CVS repository.
2 :    
3 :     An entry should be made for _every_ commit to the repository.
4 :     The entries in this file will be used when creating the README
5 :     for new versions, so keep that in mind when writing the
6 :     description.
7 :    
8 :     The form of an entry should be:
9 :    
10 :     Name:
11 :     Date:
12 :     Tag: <post-commit CVS tag>
13 :     Description:
14 : george 824
15 : leunga 815 ----------------------------------------------------------------------
16 : george 952 Name: Lal George
17 :     Date: 2001/10/09 09:41:37 EDT
18 :     Tag: george-20011008-mlrisc-labels
19 :     Description:
20 :    
21 :     Changed the machine description files to support printing of
22 :     local and global labels in assembly code, based on host assembler
23 :     conventions.
24 :    
25 :     ----------------------------------------------------------------------
26 : blume 916 Name: Matthias Blume
27 : blume 939 Date: 2001/09/25 15:25:00 EDT
28 :     Tag: blume-20010925-exninfo
29 :     Description:
30 :    
31 :     I provided a non-hook implementation of exnName (at the toplevel) and
32 :     made the "dummy" implementation of exnMessage (at the toplevel) more
33 :     useful: if nothing gets "hooked in", then at least you are going to
34 :     see the exception name and a message indicating why you don't see more.
35 :    
36 :     [For the time being, programs that need exnMessage and want to use
37 :     ml-build should either use General.exnMessage (strongly recommended) or
38 :     refer to structure General at some other point so that CM sees a
39 :     static dependency.]
40 :    
41 :     [Similar remarks go for "print" and "use": If you want to use their
42 :     functionality in stand-alone programs generated by ml-build, then use
43 :     TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
44 :    
45 :     ----------------------------------------------------------------------
46 :     Name: Matthias Blume
47 : blume 938 Date: 2001/09/20 17:28:00 EDT
48 :     Tag: blume-20010920-slowfp
49 :     Description:
50 :    
51 :     Allen says that x86-fast-fp is not safe yet, so I turned it off again...
52 :    
53 :     ----------------------------------------------------------------------
54 :     Name: Matthias Blume
55 : blume 937 Date: 2001/09/20 17:20:00 EDT
56 :     Tag: blume-20010920-canonicalpaths
57 :     Description:
58 :    
59 :     0. Updated the BOOT file (something that I forgot to do earlier).
60 :    
61 :     1. Small internal change to CM so that it avoids "/../" in filenames
62 :     as much as possible (but only where it is safe).
63 :    
64 :     2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
65 :     that arguments that contain delimiters are passed through correctly.
66 :     This change also means that all "special" arguments of the form
67 :     @SMLxxx... must come first.
68 :    
69 :     3. Changed install script to put relative anchor names for tool commands
70 :     into pathconfig.
71 :    
72 :     ----------------------------------------------------------------------
73 :     Name: Matthias Blume
74 : george 952 >>>>>>> 1.169
75 : blume 932 Date: 2001/09/18 15:35:00 EDT
76 :     Tag: blume-20010918-readme11036
77 :     Description:
78 :    
79 :     Added README files.
80 :    
81 :     ----------------------------------------------------------------------
82 :     Name: Matthias Blume
83 : blume 929 Date: 2001/09/18 11:45:00 EDT
84 :     Tag: Release_110_36 (retag)
85 :     Description:
86 :    
87 :     Fixed mistake in config/preloads. Retagged as 110.36.
88 :    
89 :     ----------------------------------------------------------------------
90 :     Name: Matthias Blume
91 : blume 928 Date: 2001/09/18 09:40:00 EDT
92 : blume 929 Tag: Release_110_36_orig (tag changed)
93 : blume 928 Description:
94 :    
95 :     New version (110.36). New bootfiles.
96 :    
97 :     ----------------------------------------------------------------------
98 :     Name: Matthias Blume
99 : blume 927 Date: 2001/09/14 16:15:00 EDT
100 :     Tag: blume-20010914-x86fastfp
101 :     Description:
102 :    
103 :     John committed some changes that Allen made, in particular a (hopefully)
104 :     correctly working version of the x86-fp module.
105 :    
106 :     I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
107 :     flag to "true". Everything seems to compile to a fixpoint ok, and
108 :     "mandelbrot" speeds up by about 15%.
109 :    
110 :     ----------------------------------------------------------------------
111 :     Name: Matthias Blume
112 : blume 923 Date: 2001/09/13 11:20:00 EDT
113 :     Tag: blume-20010913-minimal
114 :     Description:
115 :    
116 :     1. Stefan Monnier's patch to fix a miscompilation problem that
117 :     was brought to light by John Reppy's work on Moby.
118 :    
119 :     2. Implemented a minimal "structure Compiler" that contains just
120 :     "version" and "architecture". The minimal version will be
121 :     available when the full version is not. This is for backward-
122 :     compatibility with code that wants to test Compiler.version.
123 :    
124 :     ----------------------------------------------------------------------
125 :     Name: Matthias Blume
126 : blume 920 Date: 2001/08/28 14:03:00 EDT
127 :     Tag: blume-20010828-ml-lex
128 :     Description:
129 :    
130 :     Fix for bug 1581, received from Neophytos Michael.
131 :    
132 :     ----------------------------------------------------------------------
133 :     Name: Matthias Blume
134 : blume 918 Date: 2001/08/27 11:20:00 EDT
135 :     Tag: blume-20010827-readme11035
136 :     Description:
137 :    
138 :     Fleshed out the README file for 110.35.
139 :    
140 :     ----------------------------------------------------------------------
141 :     Name: Matthias Blume
142 : blume 916 Date: 2001/08/24 17:10:00 EDT
143 :     Tag: Release_110_35
144 :     Description:
145 :    
146 :     New version number (110.35). New bootfiles.
147 :    
148 :     ----------------------------------------------------------------------
149 : george 915 Name: Lal George
150 : george 909 Date: 2001/08/24 13:47:18 EDT 2001
151 :     Tag: george-20010824-MLRISC-graphs
152 :     Description:
153 :    
154 :     removed clusters from MLRISC completely and replaced with graphs.
155 :    
156 :     ----------------------------------------------------------------------
157 :     Name: Matthias Blume
158 : blume 905 Date: 2001/08/23 17:50:00 EDT
159 :     Tag: blume-20010823-toplevel
160 :     Description:
161 :    
162 :     - some reorganization of the code that implements various kinds of
163 :     environments in the compiler (static, dynamic, symbolic, combined)
164 :     - re-implemented the EnvRef module so that evalStream works properly
165 :     (if the stream contains references to "use", "CM.make", etc.)
166 :     - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
167 :    
168 :     ----------------------------------------------------------------------
169 :     Name: Matthias Blume
170 : blume 904 Date: 2001/08/20 15:50 EDT
171 :     Tag: blume20010820-slipup
172 :     Description:
173 :    
174 :     I forgot to commit a few files. Here they are...
175 :    
176 :     ----------------------------------------------------------------------
177 :     Name: Matthias Blume
178 : blume 903 Date: 2001/08/20 15:35:00 EDT
179 :     Tag: blume-20010820-debugprof
180 :     Description:
181 :    
182 :     !!!! NEW BOOTFILES !!!!
183 :    
184 :     This is another round of reorganizing the compiler sources. This
185 :     time the main goal was to factor out all the "instrumentation"
186 :     passes (for profiling and backtracing) into their own library.
187 :     The difficulty was to do it in such a way that it does not depend
188 :     on elaborate.cm but only on elabdata.cm.
189 :    
190 :     Therefore there have been further changes to both elaborate.cm and
191 :     elabdata.cm -- more "generic" things have been moved from the former
192 :     to the latter. As a result, I was forced to split the assignment
193 :     of numbers indicating "primtyc"s into two portions: SML-generic and
194 :     SML/NJ-specific. Since it would have been awkward to maintain,
195 :     I bit the bullet and actually _changed_ the mapping between these
196 :     numbers and primtycs. The bottom line of this is that you need
197 :     a new set of bin- and bootfiles.
198 :    
199 :     I have built new bootfiles for all architectures, so doing a fresh
200 :     checkout and config/install.sh should be all you need.
201 :    
202 :     The newly created library's name is
203 :    
204 :     $smlnj/viscomp/debugprof.cm
205 :    
206 :     and its sources live under
207 :    
208 :     src/compiler/DebugProf
209 :    
210 :     ----------------------------------------------------------------------
211 :     Name: Matthias Blume
212 : blume 902 Date: 2001/08/15 17:15:00 EDT
213 :     Tag: blume-20010815-compreorg
214 :     Description:
215 :    
216 :     This is a first cut at reorganizing the CM libraries that make up the
217 :     core of the compiler. The idea is to separate out pieces that could
218 :     be used independently by tools, e.g., the parser, the typechecker, etc.
219 :    
220 :     The current status is a step in this direction, but it is not quite
221 :     satisfactory yet. Expect more changes in the future.
222 :    
223 :     Here is the current (new) organization...
224 :    
225 :     What used to be $smlnj/viscomp/core.cm is now divided into
226 :     six CM libraries:
227 :    
228 :     $smlnj/viscomp/basics.cm
229 :     /parser.cm
230 :     /elabdata.cm
231 :     /elaborate.cm
232 :     /execute.cm
233 :     /core.cm
234 :    
235 :     The CM files for these libraries live under src/system/smlnj/viscomp.
236 :     All these libraries are proxy libraries that contain precisely
237 :     one CM library component. Here are the locations of the components
238 :     (all within the src/compiler tree):
239 :    
240 :     Basics/basics.cm
241 :     Parse/parser.cm
242 :     ElabData/elabdata.cm
243 :     Elaborator/elaborate.cm
244 :     Execution/execute.cm
245 :     core.cm
246 :    
247 :     [This organization is the same that has been used already
248 :     for a while for the architecture-specific parts of the visible
249 :     compiler and for the old version of core.cm.]
250 :    
251 :     As you will notice, many source files have been moved from their
252 :     respective original locations to a new home in one of the above
253 :     subtrees.
254 :    
255 :     The division of labor between the new libraries is the following:
256 :    
257 :     basics.cm:
258 :     - Simple, basic definitions that pertain to many (or all) of
259 :     the other libraries.
260 :     parser.cm:
261 :     - The SML parser, producing output of type Ast.dec.
262 :     - The type family for Ast is also defined and exported here.
263 :     elabdata.cm:
264 :     - The datatypes that describe input and output of the elaborator.
265 :     This includes types, absyn, and static environments.
266 :     elaborator.cm:
267 :     - The SML/NJ type checker and elaborator.
268 :     This maps an Ast.dec (with a given static environment) to
269 :     an Absyn.dec (with a new static environment).
270 :     - This libraries implements certain modules that used to be
271 :     structures as functors (to remove dependencies on FLINT).
272 :     execute.cm:
273 :     - Everything having to do with executing binary code objects.
274 :     - Dynamic environments.
275 :     core.cm:
276 :     - SML/NJ-specific instantiations of the elaborator and MLRISC.
277 :     - Top-level modules.
278 :     - FLINT (this should eventually become its own library)
279 :    
280 :     Notes:
281 :    
282 :     I am not 100% happy with the way I separated the elaborator (and its
283 :     data structures) from FLINT. Two instances of the same problem:
284 :    
285 :     1. Data structures contain certain fields that carry FLINT-specific
286 :     information. I hacked around this using exn and the property list
287 :     module from smlnj-lib. But the fact that there are middle-end
288 :     specific fields around at all is a bit annoying.
289 :    
290 :     2. The elaborator calculates certain FLINT-related information. I tried
291 :     to make this as abstract as I could using functorization, but, again,
292 :     the fact that the elaborator has to perform calculations on behalf
293 :     of the middle-end at all is not nice.
294 :    
295 :     3. Having to used exn and property lists is unfortunate because it
296 :     weakens type checking. The other alternative (parameterizing
297 :     nearly *everything*) is not appealing, though.
298 :    
299 :     I removed the "rebinding =" warning hack because due to the new organization
300 :     it was awkward to maintain it. As a result, the compiler now issues some of
301 :     these warnings when compiling init.cmi during bootstrap compilation. On
302 :     the plus side, you also get a warning when you do, for example:
303 :     val op = = Int32.+
304 :     which was not the case up to now.
305 :    
306 :     I placed "assign" and "deref" into the _Core structure so that the
307 :     code that deals with the "lazy" keyword can find them there. This
308 :     removes the need for having access to the primitive environment
309 :     during elaboration.
310 :    
311 :     ----------------------------------------------------------------------
312 :     Name: Matthias Blume
313 : blume 898 Date: 2001/08/13
314 :     Tag: blume-20010813-closures
315 :     Description:
316 :    
317 :     This fix was sent to us by Zhong Shao. It is supposed to improve the
318 :     performance of certain loops by avoiding needless closure allocation.
319 :    
320 :     ----------------------------------------------------------------------
321 : george 890 Name: Lal George
322 : george 896 Date: 2001/07/31 10:03:23 EDT 2001
323 :     Tag: george-20010731-x86-fmalloc
324 :     Description: Fixed bug in x86 calls
325 :    
326 :     There was a bug where call instructions would mysteriously
327 :     vanish. The call instruction had to be one that returned
328 :     a floating point value.
329 :    
330 :     ----------------------------------------------------------------------
331 :     Name: Lal George
332 : george 890 Date: 2001/07/19 16:36:29 EDT 2001
333 :     Tag: george-20010719-simple-cells
334 :     Description:
335 :    
336 :     I have dramatically simplified the interface for CELLS in MLRISC.
337 :    
338 :     In summary, the cells interface is broken up into three parts:
339 :    
340 :     1. CellsBasis : CELLS_BASIS
341 :    
342 :     CellsBasis is a top level structure and common for all
343 :     architectures. it contains the definitions of basic datatypes
344 :     and utility functions over these types.
345 :    
346 :     2. functor Cells() : CELLS
347 :    
348 :     Cells generates an interface for CELLS that incorporates the
349 :     specific resources on the target architecture, such as the
350 :     presence of special register classes, their number and size,
351 :     and various useful substructures.
352 :    
353 :     3. <ARCH>CELLS
354 :    
355 :     e.g. SparcCells: SPARCCELLS
356 :    
357 :     <ARCH>CELLS usually contains additional bindings for special
358 :     registers on the architecture, such as:
359 :    
360 :     val r0 : cell (* register zero *)
361 :     val y : cell (* Y register *)
362 :     val psr : cell (* processor status register *)
363 :     ...
364 :    
365 :     The structure returned by applying the Cells functor is opened
366 :     in this interface.
367 :    
368 :     The main implication of all this is that the datatypes for cells is
369 :     split between CellsBasis and CELLS -- a fairly simple change for user
370 :     code.
371 :    
372 :     In the old scheme the CELLS interface had a definitional binding of
373 :     the form:
374 :    
375 :     signature CELLS = sig
376 :    
377 :     structure CellsBasis = CellsBasis
378 :    
379 :     ...
380 :    
381 :     end
382 :    
383 :     With all the sharing constraints that goes on in MLRISC, this old
384 :     design quickly leads to errors such as:
385 :    
386 :     "structure definition spec inside of sharing ... "
387 :    
388 :    
389 :     and appears to require an unacceptable amount of sharing and where
390 :     constraint hackery.
391 :    
392 :     I think this error message (the interaction of definitional specs and
393 :     sharing) requires more explanation on our web page.
394 :    
395 :     ----------------------------------------------------------------------
396 : blume 826 Name: Matthias Blume
397 : blume 879 Date: 2001/07/19 15:00:00 EDT
398 :     Tag: blume-20010719-libreorg
399 :     Description:
400 :    
401 :     This update puts together a fairly extensive but straightforward change
402 :     to the way the libraries that implement the interactive system are
403 :     organized:
404 :    
405 :     The biggest change is the elimination of structure Compiler. As a
406 :     replacement for this structure, there is now a CM library
407 :     (known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
408 :     that exports all the substructures of the original structure Compiler
409 :     directly. So instead of saying Compiler.Foo.bar one now simply
410 :     says Foo.bar. (The CM libraries actually export a collection of
411 :     structures that is richer than the collection of substructures of
412 :     structure Compiler.)
413 :    
414 :     To make the transition smooth, there is a separate library called
415 :     $smlnj/compiler/compiler.cm which puts together and exports the
416 :     original structure Compiler (or at least something very close to it).
417 :    
418 :     There are five members of the original structure Compiler
419 :     that are not exported directly but which instead became members
420 :     of a new structure Backend (described by signature BACKEND). These are:
421 :     structure Profile (: PROFILE), structure Compile (: COMPILE), structure
422 :     Interact (: INTERACT), structure Machine (: MACHINE), and val
423 :     architecture (: string).
424 :    
425 :     Structure Compiler.Version has become structure CompilerVersion.
426 :    
427 :     Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
428 :     by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
429 :     or x86, respectively.
430 :     Each of these exports the same frontend structures that
431 :     $smlnj/compiler.cm exports. But they do not have a structure Backend
432 :     and instead export some structure <Arch>Backend where <Arch> is Alpha32,
433 :     Hppa, PPC, Sparc, or X86, respectively.
434 :    
435 :     Library $smlnj/compiler/all.cm exports the union of the exports of
436 :     $smlnj/compiler/<arch>.cm
437 :    
438 :     There are no structures <Arch>Compiler anymore, use
439 :     $smlnj/compiler/<arch>.cm instead.
440 :    
441 :     Library host-compiler-0.cm is gone. Instead, the internal library
442 :     that instantiates CM is now called cm0.cm. Selection of the host
443 :     compiler (backend) is no longer done here but. (Responsibility for it
444 :     now lies with $smlnj/compiler/current.cm. This seems to be more
445 :     logical.)
446 :    
447 :     Many individual files have been moved or renamed. Some files have
448 :     been split into multiple files, and some "dead" files have been deleted.
449 :    
450 :     Aside from these changes to library organization, there are also changes
451 :     to the way the code itself is organized:
452 :    
453 :     Structure Binfile has been re-implemented in such a way that it no
454 :     longer needs any knowledge of the compiler. It exclusively deals
455 :     with the details of binfile layout. It no longer invokes the
456 :     compiler (for the purpose of creating new prospective binfile
457 :     content), and it no longer has any knowledge of how to interpret
458 :     pickles.
459 :    
460 :     Structure Compile (: COMPILE) has been stripped down to the bare
461 :     essentials of compilation. It no longer deals with linking/execution.
462 :     The interface has been cleaned up considerably.
463 :    
464 :     Utility routines for dealing with linking and execution have been
465 :     moved into their own substructures.
466 :    
467 :     (The ultimate goal of these changes is to provide a light-weight
468 :     binfile loader/linker (at least for, e.g., stable libraries) that
469 :     does not require CM or the compiler to be present.)
470 :    
471 :     CM documentation has been updated to reflect the changes to library
472 :     organization.
473 :    
474 :     ----------------------------------------------------------------------
475 :     Name: Matthias Blume
476 : blume 875 Date: 2001/07/10 17:30:00 EDT
477 :     Tag: Release_110_34
478 :     Description:
479 :    
480 : blume 876 Minor tweak to 110.34 (re-tagged):
481 :    
482 :     - README.html file added to CVS repository
483 :     - runtime compiles properly under FreeBSD 3.X and 4.X
484 :    
485 :     ----------------------------------------------------------------------
486 :     Name: Matthias Blume
487 :     Date: 2001/07/10 17:30:00 EDT
488 :     Tag: Release_110_34
489 :     Description:
490 :    
491 : blume 875 New version number (110.34). New bootfiles.
492 :    
493 :     ----------------------------------------------------------------------
494 :     Name: Matthias Blume
495 : blume 874 Date: 2001/07/09 16:00:00 EDT
496 :     Tag: blume-20010709-more-varargs
497 :     Description:
498 :    
499 :     I changed the handling of varargs in ml-nlffigen again:
500 :     The ellipsis ... will now simply be ignored (with an accompanying warning).
501 :    
502 :     The immediate effect is that you can actually call a varargs function
503 :     from ML -- but you can't actually supply any arguments beyond the ones
504 :     specified explicitly. (For example, you can call printf with its format
505 :     string, but you cannot pass additional arguments.)
506 :    
507 :     This behavior is only marginally more useful than the one before, but
508 :     it has the advantage that a function or, more importantly, a function
509 :     type never gets dropped on the floor, thus avoiding follow-up problems with
510 :     other types that refer to the offending one.
511 :    
512 :     ----------------------------------------------------------------------
513 :     Name: Matthias Blume
514 : blume 873 Date: 2001/07/09 11:25:00 EDT
515 :     Tag: blume-20010709-varargs
516 :     Description:
517 :    
518 :     1. ckit-lib.cm now exports structure Error
519 :     2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
520 :     with a warning accompanied by a source location. Moreover, it
521 :     merely skips the offending function or type and proceeds with the
522 :     rest of its work.u As a result, one can safely feed C code containing
523 :     "..." to ml-nlffigen.
524 :     3. There are some internal improvements to CM, providing slightly
525 :     more general string substitutions in the tools subsystem.
526 :    
527 :     ----------------------------------------------------------------------
528 :     Name: Matthias Blume
529 : blume 854 Date: 2001/06/27 15:10:00 EDT
530 :     Tag: blume-20010627-concur
531 :     Description:
532 :    
533 :     Fixed a small bug in CM's handling of parallel compilation.
534 :     (You could observe the bug by Control-C-interrupting an ordinary
535 :     CMB.make or CM.stabilize and then attaching some compile servers.
536 :     The result was that all of a sudden the previously interrupted
537 :     compilation would continue on its own. This was because of
538 :     an over-optimization: CM did not bother to clean out certain queues
539 :     when no servers were attached "anyway", resulting in the contents
540 :     of these queues to grab control when new servers did get attached.)
541 :    
542 :     There is also another minor update to the CM manual.
543 :    
544 :     ----------------------------------------------------------------------
545 :     Name: Matthias Blume
546 : blume 853 Date: 2001/06/26 16:15:00 EDT
547 :     Tag: blume-20010626-cmdoc
548 :     Description:
549 :    
550 :     Minor typo fixed in CM manual (syntax diagram for libraries).
551 :    
552 :     ----------------------------------------------------------------------
553 :     Name: Matthias Blume
554 : blume 852 Date: 2001/06/25 22:55:00 EDT
555 :     Tag: blume-20010625-x86pc
556 :     Description:
557 :    
558 :     Fixed a nasty bug in the X86 assembly code that caused signal
559 :     handlers to fail (crash) randomly.
560 :    
561 :     ----------------------------------------------------------------------
562 :     Name: Matthias Blume
563 : blume 846 Date: 2001/06/25 12:05:00 EDT
564 :     Tag: blume-20010625-nlffigen
565 :     Description:
566 :    
567 :     This update fixes a number of minor bugs in ml-nlffigen as reported by
568 :     Nick Carter <nbc@andrew.cmu.edu>.
569 :    
570 :     1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
571 :     2. Default names for generated files are now derived from the name of
572 :     the C file *without its directory*. In particular, this causes generated
573 :     files to be placed locally even if the C file is in some system directory.
574 :     3. Default names for generated signatures and structures are also derived
575 :     from the C file name without its directory. This avoids silly things
576 :     like "structure GL/GL".
577 :     (Other silly names are still possible because ml-nlffigen does not do
578 : blume 847 a thorough check of whether generated names are legal ML identifiers.
579 :     When in doubt, use command line arguments to force particular names.)
580 : blume 846
581 :     ----------------------------------------------------------------------
582 :     Name: Matthias Blume
583 : blume 845 Date: 2001/06/21 12:25:00 EDT
584 :     Tag: blume-20010621-eXene
585 :     Description:
586 :    
587 :     eXene now compiles and (sort of) works again.
588 :    
589 :     The library name (for version > 110.33) is $/eXene.cm.
590 :    
591 :     I also added an new example in src/eXene/examples/nbody. See the
592 :     README file there for details.
593 :    
594 :     ----------------------------------------------------------------------
595 :     Name: Matthias Blume
596 : blume 844 Date: 2001/06/20 16:40:00 EDT
597 :     Tag: blume-20010620-cml
598 :     Description:
599 :    
600 :     CML now compiles and works again.
601 :    
602 :     Libraries (for version > 110.33):
603 :    
604 :     $cml/cml.cm Main CML library.
605 :     $cml/basis.cm CML's version of $/basis.cm.
606 :     $cml/cml-internal.cm Internal helper library.
607 :     $cml/core-cml.cm Internal helper library.
608 :     $cml-lib/trace-cml.cm Tracing facility.
609 :     $cml-lib/smlnj-lib.cm CML's version of $/smlnj-lib.cm
610 :    
611 :     The installer (config/install.sh) has been taught how to properly
612 :     install this stuff.
613 :    
614 :     ----------------------------------------------------------------------
615 :     Name: Matthias Blume
616 : blume 843 Date: 2001/06/19 17:55:00 EDT
617 :     Tag: blume-20010619-instantiate
618 :     Description:
619 :    
620 :     This un-breaks the fix for bug 1432.
621 :     (The bug was originally fixed in 110.9 but I broke it again some
622 :     time after that.)
623 :    
624 :     ----------------------------------------------------------------------
625 :     Name: Matthias Blume
626 : blume 842 Date: 2001/06/19 17:25:00 EDT
627 :     Tag: blume-20010619-signals
628 :     Description:
629 :    
630 :     This should (hopefully) fix the long-standing signal handling bug.
631 :     (The runtime system was constructing a continuation record with an
632 :     incorrect descriptor which would cause the GC to drop data on the floor...)
633 :    
634 :     ----------------------------------------------------------------------
635 :     Name: Matthias Blume
636 : blume 840 Date: 2001/06/15 15:05:00 EDT
637 : blume 841 Tag: blume-20010615-moresparc
638 :     Description:
639 :    
640 :     Here is a short late-hour update related to Sparc c-calls:
641 :    
642 :     -- made handling of double-word arguments a bit smarter
643 :    
644 :     -- instruction selection phase tries to collapse certain clumsily
645 :     constructed ML-Trees; typical example:
646 :    
647 :     ADD(ty,ADD(_,e,LI d1),LI d2) -> ADD(ty,e,LI(d1+d2))
648 :    
649 :     This currently has no further impact on SML/NJ since mlriscGen does
650 :     not seem to generate such patterns in the first place, and c-calls
651 :     (which did generate them in the beginning) has meanwhile been fixed
652 :     so as to avoid them as well.
653 :    
654 :     ----------------------------------------------------------------------
655 :     Name: Matthias Blume
656 :     Date: 2001/06/15 15:05:00 EDT
657 : blume 840 Tag: blume-20010615-sparc
658 :     Description:
659 :    
660 :     The purpose of this update is to provide an implementation of NLFFI
661 :     on Sparc machines.
662 :    
663 :     Here are the changes in detail:
664 :    
665 :     * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
666 :     the Sparc implementation of the c-calls API.
667 :     * The Sparc backend of SML/NJ has been modified to uniformely use %fp
668 :     for accessing the ML frame. Thus, we have a real frame pointer and
669 :     can freely modify %sp without need for an omit-frame-ptr phase.
670 :     The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
671 :     this case.
672 :     * ml-nlffigen has been taught to produce code for different architectures
673 :     and calling conventions.
674 :     * In a way similar to what was done in the x86 case, the Sparc
675 :     backend uses its own specific extension to mltree. (For example,
676 :     it needs to be able to generate UNIMP instructions which are part
677 :     of the calling convention.)
678 :     * ml-nlffi-lib was reorganized to make it more modular (in particular,
679 :     to make it easier to plug in new machine- and os-dependent parts).
680 :    
681 :     There are some other fairly unrelated bug fixes and cleanups as well:
682 :    
683 :     * I further hacked the .cm files for MLRISC tools (like MDLGen) so
684 :     that they properly share their libraries with existing SML/NJ libraries.
685 :     * I fixed a minor cosmetic bug in CM, supressing certain spurious
686 :     follow-up error messages.
687 :     * Updates to CM/CMB documentation.
688 :    
689 :     TODO items:
690 :    
691 :     * MLRISC should use a different register as its asmTemp on the Sparc.
692 :     (The current %o2 is a really bad choice because it is part of the
693 :     calling conventions, so things might interfere in unexpected ways.)
694 :    
695 :     ----------------------------------------------------------------------
696 :     Name: Matthias Blume
697 : blume 839 Date: 2001/06/07
698 :     Tag: blume-20010607-calls
699 :     Description:
700 :    
701 :     A number of internal changes related to C calls and calling conventions:
702 :    
703 :     1. ML-Tree CALL statements now carry a "pops" field. It indicates the
704 :     number of bytes popped implicitly (by the callee). In most cases
705 :     this field is 0 but on x86/win32 it is some non-zero value. This
706 :     is information provided for the benefit of the "omit-frameptr" pass.
707 :     2. The CALL instruction on the x86 carries a similar "pops" field.
708 :     The instruction selection phase copies its value from the ML-Tree
709 :     CALL statement.
710 :     3. On all other architectures, the instruction selection phase checks
711 :     whether "pops=0" and complains if not.
712 :     4. The c-calls implementation for x86 now accepts two calling conventions:
713 :     "ccall" and "stdcall". When "ccall" is selected, the caller cleans
714 :     up after the call and pops is set to 0. For "stdcall", the caller
715 :     does nothing, leaving the cleanup to the callee; pops is set to
716 :     the number of bytes that were pushed onto the stack.
717 :     5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
718 :     distinguish between "ccall" and "stdcall".
719 :     6. The UNIMP instruction has been added to the supported Sparc instruction
720 :     set. (This is needed for implementing the official C calling convention
721 :     on this architecture.)
722 :     7. I fixed some of the .cm files under src/MLRISC/Tools to make them
723 :     work with the latest CM.
724 :    
725 :     ----------------------------------------------------------------------
726 :     Name: Matthias Blume
727 : blume 838 Date: 2001/06/05 15:10:00 EDT
728 :     Tag: blume-20010605-cm-index
729 :     Description:
730 :    
731 :     0. The "lambdasplit" parameter for class "sml" in CM has been documented.
732 :    
733 :     1. CM can now generate "index files". These are human-readable files
734 :     that list on a per-.cm-file basis each toplevel symbol defined or
735 :     imported. The location of the index file for
736 :     <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
737 :     To enable index-file generation, set CM.Control.generate_index to true
738 :     or export an environment-symbol: export CM_GENERATE_INDEX=true.
739 :    
740 :     The CM manual has been updated accordingly.
741 :    
742 :     2. I made some slight modifications to the c-calls API in MLRISC.
743 :    
744 :     a) There is now a callback to support saving/restoring of
745 :     dedicated but caller-save registers around the actual call
746 :     instruction.
747 :     b) One can optionally specify a comment-annotation for the
748 :     call instruction.
749 :    
750 :     3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
751 :     (For example, the comment annotation shows the C prototype of
752 :     the function being called.)
753 :    
754 :     ----------------------------------------------------------------------
755 :     Name: Matthias Blume
756 : blume 837 Date: 2001/06/01 13:30:00 EDT
757 :     Tag: blume-20010601-nlffi-cleanup
758 :     Description:
759 :    
760 :     This is mostly a cleanup of MLFFI stuff:
761 :    
762 :     - some signature files have been put into a more exposed place
763 :     - the ugly 'f type parameter is gone (simplifies types tremendously!)
764 :     - ml-nlffigen changed accordingly
765 :     - tutorial updated
766 :    
767 :     Other changes:
768 :    
769 :     - author's affiliation in CM manual(s) updated
770 :     - some more recognized keywords added to Allen's sml.sty
771 :    
772 :     ----------------------------------------------------------------------
773 :     Name: Matthias Blume
774 : blume 836 Date: 2001/05/25 15:30:00 EDT
775 :     Tag: blume-20010525-iptr
776 :     Description:
777 :    
778 :     - put the official 110.33-README (as it appears on the ftp server) under
779 :     CVS
780 :     - fixed a small bug related to incomplete pointer types in
781 :     ml-nlffigen
782 :     - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
783 :     (it does not need the 'f type parameter)
784 :    
785 :     ----------------------------------------------------------------------
786 :     Name: Matthias Blume
787 : blume 834 Date: 2001/05/23 14:30:00 EDT
788 :     Tag: Release_110_33
789 :     Description:
790 :    
791 :     New version number (110.33). New bootfiles.
792 :    
793 :     ----------------------------------------------------------------------
794 :     Name: Matthias Blume
795 : blume 833 Date: 2001/05/22 18:06:00 EDT
796 :     Tag: blume-20010522-targets
797 :     Description:
798 :    
799 :     Made install.sh use file config/targets.customized if it exists, falling
800 :     back to config/targets if it doesn't. This way one can have a customized
801 :     version of the targets file without touching the "real thing", thus
802 :     eliminating the constant fear of accidentally checking something bogus
803 :     back into the CVS repository... (File config/targets.customized must
804 :     not be added to the repository!)
805 :    
806 :     ----------------------------------------------------------------------
807 :     Name: Matthias Blume
808 : blume 832 Date: 2001/05/22 16:30:00 EDT
809 :     Tag: blume-20010522-minitut
810 :     Description:
811 :    
812 :     1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
813 :     struct returns.
814 :     2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt. This is some very
815 :     incomplete, preliminary documentation for NLFFI.
816 :    
817 :     ----------------------------------------------------------------------
818 :     Name: Matthias Blume
819 : blume 829 Date: 2001/05/14 11:30:00 EDT
820 :     Tag: blume-20010514-script
821 :     Description:
822 :    
823 :     Some bugs in install script fixed.
824 :    
825 :     In addition to that I also made a slight change to the NLFFI API:
826 :     Functors generated by ml-nlffigen now take the dynamic library as a
827 :     straight functor argument, not as a suspended one. (The original
828 :     functor code used to force the suspension right away anyway, so there
829 :     was nothing gained by this complication of the interface.)
830 :    
831 :     ----------------------------------------------------------------------
832 :     Name: Matthias Blume
833 : blume 828 Date: 2001/05/11 14:35:00 EDT
834 :     Tag: blume-20010511-ml-nlffi
835 :     Description:
836 :    
837 :     I finally took the plunge and added my new FFI code to the main
838 :     repository. For x86-linux it is now ready for prime-time.
839 :    
840 :     There are two new subdirectories of "src":
841 :    
842 :     - ml-nlffi-lib:
843 :     The utility library for programs using the FFI interface.
844 :     Here is the implementation of $/c.cm and its associated low-level
845 :     partners $/c-int.cm and $/memory.cm.
846 :     - ml-nlffigen:
847 :     A stand-alone program for generating ML glue code from C source
848 :     code.
849 :    
850 :     Building ml-nlffigen requires $/ckit-lib.cm.
851 :    
852 :     The config/install.sh script has been updates to do the Right Thing
853 :     (hopefully).
854 :    
855 :     Notice that the source tree for the C-Kit will not be put under "src"
856 :     but directly under the installation root directory. (This is the
857 :     structure that currently exists on the CVS server when you check out
858 :     module "sml".) Fortunately, config/install.sh knows about this oddity.
859 :    
860 :     Bugs: No documentation yet.
861 :    
862 :     ----------------------------------------------------------------------
863 :     Name: Matthias Blume
864 : blume 826 Date: 2001/05/09 16:35:00 EDT
865 :     Tag: blume-20010509-cpscontract
866 :     Description:
867 :    
868 :     Fixed a bug in the accounting code in cpsopt/contract.sml. (The
869 :     wrapper/unwrapper elimination did not decrement usage counts and some
870 :     dead variables got overlooked by the dead-up logic.)
871 :    
872 :     ----------------------------------------------------------------------
873 : george 824 Name: Lal George
874 :     Date: 2001/05/08 17:26:09 EDT
875 :     Tag: george-20010508-omit-frameptr
876 :     Description:
877 :    
878 :     Changes to implement the omit-frame-pointer optimization to support
879 :     raw C calls. For now, there is only support on the Intel x86, but
880 :     other architectures will follow as more experience is gained with this.
881 :    
882 :    
883 :     ----------------------------------------------------------------------
884 : blume 818 Name: Matthias Blume
885 : blume 819 Date: 2001/05/07 14:40:00 EDT
886 :     Tag: blume-20010507-proxies
887 :     Description:
888 :    
889 :     I made into "proxy libraries" all libraries that qualify for such a
890 :     change. (A qualifying library is a library that has another library or
891 :     groups as its sole member and repeats that member's export list
892 :     verbatim. A proxy library avoids this repetition by omitting its export
893 :     list, effectively inheriting the list that its (only) member exports.
894 :     See the CM manual for more explanation.)
895 :     The main effect is that explicit export lists for these libraries
896 :     do not have to be kepts in sync, making maintenance a bit easier.
897 :    
898 :     I also added copyright notices to many .cm-files.
899 :    
900 :     Last but not least, I made a new set of bootfiles.
901 :    
902 :     ----------------------------------------------------------------------
903 :     Name: Matthias Blume
904 : blume 818 Date: 2001/05/04 17:00:00 EDT
905 :     Tag: blume-20010504-cm-lsplit
906 :     Description:
907 :    
908 :     0. John merged pending changes to $/smlnj-lib.cm
909 :    
910 :     1. Allen's previous change accidentally backed out of one of Lal's
911 :     earlier changes. I undid this mistake (re-introducing Lal's change).
912 :    
913 :     2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
914 :     within the compiler where applicable. There is some code simplification
915 :     because of that.
916 :    
917 :     3. The "split" phase (in FLINT) is now part of the default list of phases.
918 :     Compiler.Control.LambdaSplitting.* can be used to globally control the
919 :     lambda-splitting (cross-module-inlining) engine. In addition to that,
920 :     it can now also be controlled on a per-source basis: CM has been taught
921 :     a new tool parameter applicable to ML source files.
922 :    
923 :     - To turn lambda-splitting off completely:
924 :     local open Compiler.Control.LambdaSplitting in
925 :     val _ = set Off
926 :     end
927 :     - To make "no lambda-splitting" the global default (but allow per-source
928 :     overriding); this is the initial setting:
929 :     local open Compiler.Control.LambdaSplitting in
930 :     val _ = set (Default NONE)
931 :     end
932 :     - To make "lambda-splitting with aggressiveness a" the global default
933 :     (and allow per-source overriding):
934 :     local open Compiler.Control.LambdaSplitting in
935 :     val _ = set (Default (SOME a))
936 :     end
937 :    
938 :     - To turn lambda-splitting off for a given ML souce file (say: a.sml)
939 :     write (in the respective .cm-file):
940 :     a.sml (lambdasplitting:off)
941 :     - To turn lambda-splitting for a.sml on with minimal aggressiveness:
942 :     a.sml (lambdasplitting:on)
943 :     - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
944 :     <a> is a decimal non-negative integer):
945 :     a.sml (lambdasplitting:<a>)
946 :     - To turn lambda-splitting for a.sml on with maximal aggressiveness:
947 :     a.sml (lambdasplitting:infinity)
948 :     - To use the global default for a.sml:
949 :     a.sml (lambdasplitting:default)
950 :     or simply
951 :     a.sml
952 :    
953 :     ----------------------------------------------------------------------
954 : leunga 815 Name: Allen Leung
955 :     Date: 2001/05/04 01:57:00 EDT
956 :     Tag: leunga-20010504-sync
957 :     Description:
958 : leunga 788
959 : leunga 815 MLRISC features.
960 :    
961 :     1. Fix to CMPXCHG instructions.
962 :     2. Changed RA interface to allow annotations in callbacks.
963 :     3. Added a new method to the stream interface to allow annotations updates.
964 :    
965 : george 749 ----------------------------------------------------------------------
966 : blume 812 Name: Matthias Blume
967 : blume 814 Date: 2001/05/01 11:45:00 EDT
968 :     Tag: blume-20010501-pcedittmp
969 :     Description:
970 :    
971 :     Changed install.sh to use the current working directory instead of
972 :     /usr/tmp for a temporary file (pcedittmp). The previous choice
973 :     of /usr/tmp caused trouble with MacOS X because of file premission
974 :     problems.
975 :    
976 :     ----------------------------------------------------------------------
977 :     Name: Matthias Blume
978 : blume 812 Date: 2001/04/20 11:10:00 EDT
979 :     Tag: blume-20010420-inMLflag
980 :     Description:
981 :    
982 :     - added vp_limitPtrMask to vproc-state.h
983 :     (for use by the raw-C-calls mechanism to implement proper interrupt
984 :     handling)
985 :     - made the ML compiler aware of various data-structure offsets so it
986 :     can generate code for accessing the vp_inML flag and vp_limitPtrMask
987 :     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
988 :     raw C-calls
989 :    
990 :     ----------------------------------------------------------------------
991 : george 810 Name: Lal George
992 :     Date: 2001/04/20 09:15:28 EDT
993 :     Tag: george-20010420-macosX
994 :     Description:
995 :    
996 :     - Changes to port to Mac OS X; Darwin.
997 :    
998 :     - In the process I found that sqrt was broken on the PPC, because the
999 :     fsqrt instruction is not implemented.
1000 :    
1001 :     ----------------------------------------------------------------------
1002 : blume 799 Name: Matthias Blume
1003 : blume 808 Date: 2001/04/18 12:45:00 EDT
1004 :     Tag: blume-20010418-ccalls
1005 :     Description:
1006 :    
1007 :     - fixed two off-by-4 errors in the x86-specific c-calls implementation
1008 :     (this bug prevented structure arguments containing pointers from being
1009 :     passed correctly)
1010 :     - changed the raw-C-call code in mlriscGen.sml in such a way that
1011 :     structure arguments are represented as a pointer to the beginning
1012 :     of the structure (instead of having a series of synthesized arguments,
1013 :     one for each structure member)
1014 :    
1015 :     - made makeml script's verbosity level configurable via environment
1016 :     variable (MAKEML_VERBOSITY)
1017 :    
1018 : blume 813 - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
1019 : blume 808 in rawmem-x86.sml; we are now using the real thing
1020 :    
1021 :     ----------------------------------------------------------------------
1022 :     Name: Matthias Blume
1023 : blume 806 Date: 2001/03/22 16:25:00 EST
1024 :     Tag: blume-20010322-bootfiles
1025 :     Description:
1026 :    
1027 :     Created a new set of bootfiles (for your automatic installation convenience).
1028 :    
1029 :     ----------------------------------------------------------------------
1030 :     Name: Matthias Blume
1031 : blume 805 Date: 2001/03/22 15:10:00 EST
1032 :     Tag: blume-20010322-rawmem-parcm
1033 :     Description:
1034 :    
1035 :     1. All "raw memory access" primitives for the new FFI are implemented now
1036 :     (at least on the x86).
1037 :     2. Some further cleanup of CM's parallel make mechanism.
1038 :    
1039 :     ----------------------------------------------------------------------
1040 :     Name: Matthias Blume
1041 : blume 801 Date: 2001/03/19 17:53:00 EST
1042 :     Tag: blume-20010319-parallel
1043 :     Description:
1044 :    
1045 :     Parallel make (using compile servers) now works again.
1046 :    
1047 :     To this end, CM.stabilize and CMB.make have been modified to work in
1048 :     two passes when compile servers are attached:
1049 :     1. Compile everything, do not perform stabilization; this pass
1050 :     uses compile servers
1051 :     2. Stabilize everything; this pass does not use compile servers
1052 :     If there are no compile servers, the two passes are combined into one
1053 :     (as before). Splitting the passes increases the inherent parallelism
1054 :     in the dependency graph because the entire graph including all
1055 :     libraries is available at the same time. This, in turn, improves
1056 :     server utilization. The downside is that the master process will
1057 :     have to do some extra work after compilation is done (because for
1058 :     technical reasons it must re-read all the binfiles during stabilization).
1059 :    
1060 :     ----------------------------------------------------------------------
1061 :     Name: Matthias Blume
1062 : blume 800 Date: 2001/03/16 12:22:00 EST
1063 :     Tag: blume-20010316-bootfiles
1064 :     Description:
1065 :    
1066 :     Created a new set of bootfiles (for your automatic installation convenience).
1067 :    
1068 :     ----------------------------------------------------------------------
1069 :     Name: Matthias Blume
1070 : blume 799 Date: 2001/03/16 11:00:00 EST
1071 :     Tag: blume-20010316-MLTREE-fixup
1072 :     Description:
1073 :    
1074 :     This is a minor fixup for an (untagged) earlier commit by Allen.
1075 :     (A file was missing).
1076 :    
1077 :     ----------------------------------------------------------------------
1078 : leunga 788 Name: Allen Leung
1079 : leunga 796 Date: Mon Mar 5 18:54:57 EST 2001
1080 :     Tag: leunga-20010305-cut-support
1081 :    
1082 :     1. New support for alternative control-flow in MLTREE.
1083 :     Currently we support
1084 :    
1085 :     FLOW_TO(CALL ...., [k1,...,kn])
1086 :    
1087 :     This is needed for 'cuts to' in C-- and try/handle-like constructs
1088 :     in Moby
1089 :    
1090 :     New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
1091 :    
1092 :     2. Register Allocator
1093 :    
1094 :     Changes in interface [from Fermin, John]
1095 :    
1096 :     3. Alpha 8-bit SLL support [Fermin]
1097 :    
1098 :     4. All architectures
1099 :    
1100 :     A new module (ClusterExpandCopies) for expanding parallel copies.
1101 :    
1102 :     ----------------------------------------------------------------------
1103 :     Name: Allen Leung
1104 : leunga 788 Date: 2001/02/27 23:07:00 EST
1105 :     Tag: leunga-20010227-minor-stuff
1106 :    
1107 :     1. Alpha bug fix for CMOVNE
1108 :     2. Handle mltree COND(..,FCMP ...,...)
1109 :     3. Bug fix in simplifier
1110 :    
1111 :     ----------------------------------------------------------------------
1112 : blume 777 Name: Matthias Blume
1113 : blume 781 Date: 2001/01/30 17:50:00 EST
1114 :     Tag: blume-20010130-sync
1115 :     Description:
1116 :    
1117 :     This is just a minor update to sync my devel branch with the main brach.
1118 :     The only visible change is the addition of some README files.
1119 :    
1120 :     ----------------------------------------------------------------------
1121 :     Name: Matthias Blume
1122 : blume 778 Date: 2001/01/12 23:30:00 JST
1123 :     Tag: blume-20010112-bootfiles
1124 :     Description:
1125 :    
1126 :     Made a new set of bootfiles that goes with the current state of the
1127 :     repository.
1128 :    
1129 :     ----------------------------------------------------------------------
1130 :     Name: Matthias Blume
1131 : blume 777 Date: 2001/01/12 21:20:00 JST
1132 :     Tag: blume-20010112-sync
1133 :     Description:
1134 :    
1135 :     I am just flushing out some minor changes that had accumulated in
1136 :     my private branch in order to sync with the main tree. (This is
1137 :     mainly because I had CVS trouble when trying to merge _into_ my
1138 :     private branch.)
1139 :    
1140 :     Most people should be completely unaffected by this.
1141 :    
1142 :     ----------------------------------------------------------------------
1143 : leunga 775 Name: Allen Leung
1144 :     Date: Thu Jan 11 21:03:00 EST 2001
1145 :     Tag: leunga-20010111-labexp=mltree
1146 :     Description:
1147 :    
1148 :     1. Removed the type LabelExp and replace it by MLTree.
1149 :     2. Rewritten mltree-simplify with the pattern matcher tool.
1150 :     3. There were some bugs in alpha code generator which would break
1151 :     64-bit code generation.
1152 :     4. Redo the tools to generate code with the
1153 :     5. The CM files in MLRISC (and in src/system/smlnj/MLRISC)
1154 :     are now generated by perl scripts.
1155 :    
1156 :     ----------------------------------------------------------------------
1157 : blume 771 Name: Matthias Blume
1158 : blume 774 Date: 2001/01/10 21:55:00 JST
1159 :     Tag: blume-20010110-rcc
1160 :     Description:
1161 :    
1162 :     The RCC stuff now seems to work (but only on the x86).
1163 :     This required hacking of the c-calls interface (and -implementation) in
1164 :     MLRISC.
1165 :    
1166 :     Normal compiler users should be unaffected.
1167 :    
1168 :     ----------------------------------------------------------------------
1169 :     Name: Matthias Blume
1170 : blume 773 Date: 2001/01/09 01:20:00 JST
1171 :     Tag: blume-20010109-rcc
1172 :     Description:
1173 :    
1174 :     This is a fairly big patch, flushing out a large number of pending
1175 :     changes that I made to my development copy over the last couple of days.
1176 :    
1177 :     Of practical relevance at this moment is a workaround for a pickling
1178 :     bug that Allen ran into the other day. The cause of the bug itself is
1179 :     still unknown and it might be hard to fix it properly, but the
1180 :     workaround has some merits of its own (namely somewhat reducing pickling
1181 :     overhead for certain libraries). Therefore, I think this solution should
1182 :     be satisfactory at this time.
1183 :    
1184 :     The rest of the changes (i.e., the vast majority) has to do with my
1185 :     ongoing efforts of providing direct support for C function calls from
1186 :     ML. At the moment there is a new primop "RAW_CCALL", typing magic
1187 :     in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
1188 :     case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
1189 :     translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
1190 :     handle RCC.
1191 :    
1192 :     The last part (the changes to mlriscGen.sml) are still known to be
1193 :     wrong on the x86 and not implemented on all other architectures. But
1194 :     the infrastructure is in place. I had to change a few functor
1195 :     signatures in the backend to be able to route the CCalls interface
1196 :     from MLRISC there, and I had to specialize the mltree type (on the
1197 :     x86) to include the necessary extensions. (The extensions themselves
1198 :     were already there and redy to go in MLRISC/x86).
1199 :    
1200 :     Everything should be very happy as soon as someone helps me with
1201 :     mlriscGen.sml...
1202 :    
1203 :     In any case, nothing of this should matter to anyone as long as the
1204 :     new primop is not being used (which is going to be the case unless you
1205 :     find it where I hid it :). The rest of the compiler is completely
1206 :     unaffected.
1207 :    
1208 :     ----------------------------------------------------------------------
1209 :     Name: Matthias Blume
1210 : blume 772 Date: 2001/01/05 00:30:00 JST
1211 :     Tag: blume-20010105-primops
1212 :     Description:
1213 :    
1214 :     Added some experimental support for work that I am doing right now.
1215 :     These changes mostly concern added primops, but there is also a new
1216 :     experimental C library in the runtime system (but currently not enabled
1217 :     anywhere except on Linux/X86).
1218 :    
1219 :     In the course of adding primops (and playing with them), I discovered that
1220 :     Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
1221 :     broken. (Zhong was very right he labeled this stuff as "major gross hack".)
1222 :     To recover, I made type information in INL_PRIM mandatory and changed
1223 :     prim.sml as well as built-in.sml accordingly. The InLine structure now
1224 :     has complete, correct type information (i.e., no bottom types).
1225 :    
1226 :     Since all these changes mean that we need new binfiles, I also bumped the
1227 :     version number to 110.32.1.
1228 :    
1229 :     ----------------------------------------------------------------------
1230 :     Name: Matthias Blume
1231 : blume 771 Date: 2000/12/30 22:10:00 JST
1232 :     Tag: blume-20001230-various
1233 :     Description:
1234 :    
1235 :     Added proxy libraries for MLRISC and let MLRISC libraries refer
1236 :     to each other using path anchors. (See CM manual for explanation.)
1237 :    
1238 :     Updated CM documentation.
1239 :    
1240 :     Fixed some bugs in CM.
1241 :    
1242 :     Implemented "proxy" libraries (= syntactic sugar for CM).
1243 :    
1244 :     Added "-quiet" option to makeml and changed runtime system accordingly.
1245 :    
1246 :     Added cleanup handler for exportML to reset timers and compiler stats.
1247 :    
1248 :     ----------------------------------------------------------------------
1249 : george 761 Name: Lal George
1250 :     Date: 2000/12/22 22:22:58 EST 2000
1251 :     Tag: Release_110_32
1252 :     Description:
1253 :    
1254 :     Infinite precision used throughout MLRISC.
1255 :     see MLRISC/mltree/machine-int.sig
1256 :    
1257 :     ----------------------------------------------------------------------
1258 : blume 756 Name: Matthias Blume
1259 : blume 760 Date: 2000/12/22 23:16:00 JST
1260 :     Tag: blume-20001222-warn
1261 :     Description:
1262 : blume 759
1263 : blume 760 Corrected wording and formatting of some CM warning message which I
1264 :     broke in my previous patch.
1265 : blume 759
1266 :     ----------------------------------------------------------------------
1267 :     Name: Matthias Blume
1268 : blume 763 Date: 2000/12/22 21:20:00 JST
1269 :     Tag: blume-20001222-anchorenv
1270 :     Description:
1271 :    
1272 :     Fixed CM's handling of anchor environments in connection with CMB.make.
1273 :    
1274 :     ----------------------------------------------------------------------
1275 :     Name: Matthias Blume
1276 : blume 758 Date: 2000/12/22 13:15:00 JST
1277 :     Tag: blume-20001222-cleanup
1278 :     Description:
1279 :    
1280 :     Removed src/cm/ffi which does not (and did not) belong here.
1281 :    
1282 :     ----------------------------------------------------------------------
1283 :     Name: Matthias Blume
1284 : blume 757 Date: 2000/12/21 23:55:00 JST
1285 :     Tag: blume-20001221-exn
1286 :     Description:
1287 :    
1288 :     Probably most important: CM no longer silently swallows all exceptions
1289 :     in the compiler.
1290 :     Plus: some other minor CM changes. For example, CM now reports some
1291 :     sizes for generated binfiles (code, data, envpickle, lambdapickle).
1292 :    
1293 :     ----------------------------------------------------------------------
1294 :     Name: Matthias Blume
1295 : blume 756 Date: 2000/12/15 00:01:05 JST
1296 :     Tag: blume-20001215-dirtool
1297 :     Description:
1298 :    
1299 :     - "dir" tool added.
1300 :     - improvements and cleanup to Tools structure
1301 :     - documentation updates
1302 :    
1303 :     ----------------------------------------------------------------------
1304 : leunga 752 Name: Allen Leung
1305 : leunga 755 Date: Thu Dec 14 03:45:24 EST 2000
1306 :     Description:
1307 :     Tag: leunga-20001214-int-inf
1308 :     Description:
1309 :    
1310 :     In IntInf, added these standard functions, which are missing from our
1311 :     implementation:
1312 :    
1313 :     andb : int * int -> int
1314 :     xorb : int * int -> int
1315 :     orb : int * int -> int
1316 :     notb : int -> int
1317 :     << : int * word -> int
1318 :     ~>> : int * word -> int
1319 :    
1320 :     Not tested, I hope they are correct.
1321 :    
1322 :     ----------------------------------------------------------------------
1323 :     Name: Allen Leung
1324 : leunga 752 Date: Fri Dec 8 19:23:26 EST 2000
1325 :     Description:
1326 :     Tag: leunga-20001208-nowhere
1327 :     Description:
1328 :    
1329 :     Slight improvements to the 'nowhere' tool to handle OR-patterns,
1330 :     to generate better error messages etc. Plus a brief manual.
1331 :    
1332 :     ----------------------------------------------------------------------
1333 : george 749 Name: Lal George
1334 :     Date: 2000/12/08 09:54:02 EST 2000
1335 :     Tag: Release_110_31
1336 :     Description:
1337 : george 705
1338 : george 749 - Version 110.31
1339 : leunga 591 ----------------------------------------------------------------------
1340 : leunga 744 Name: Allen Leung
1341 :     Date: Thu Dec 7 22:01:04 EST 2000
1342 :     Tag: leunga-20001207-cell-monster-hack
1343 :     Description:
1344 :    
1345 :     Major MLRISC internal changes. Affect all clients.
1346 :     Summary:
1347 :    
1348 :     1. Type CELLS.cell = int is now replaced by a datatype.
1349 :     As a result, the old regmap is now gone. Almost all interfaces
1350 :     in MLRISC change as a consequence.
1351 :    
1352 :     2. A new brand version of machine description tool (v3.0) that generates
1353 :     modules expecting the new interface. The old version is removed.
1354 :    
1355 :     3. The RA interface has been further abstracted into two new functors.
1356 :     RISC_RA and X86RA. These functors have much simpler interfaces.
1357 :     [See also directory MLRISC/demo.]
1358 :    
1359 :     4. Some other new source->source code generation tools are available:
1360 :    
1361 :     a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
1362 :     b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
1363 :     I use this tool to generate the peephole optimizers---with the new
1364 :     cell type changes, peephole rules are becoming difficult to write
1365 :     without conditional pattern matching.
1366 :    
1367 :     5. More Intmap -> IntHashTable change. Previous changes by Matthias didn't
1368 :     cover the entire MLRISC source tree so many things broke.
1369 :    
1370 :     6. CM files have been moved to the subdirectory MLRISC/cm.
1371 :     They are moved because there are a lot of them and they clutter up the
1372 :     root dir.
1373 :    
1374 :     7. More detailed documentation to come...
1375 :    
1376 :     NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
1377 :     a makeml -rebuild first. This is because of other other
1378 :     changes that Matthias has made (see below).
1379 :    
1380 :    
1381 :     ----------------------------------------------------------------------
1382 : blume 733 Name: Matthias Blume
1383 : blume 742 Date: 2000/11/30 23:12:00 JST
1384 :     Tag: blume-20001130-filereorg
1385 :     Description:
1386 :    
1387 :     Some manual updates and some file reorganizations in CM.
1388 :    
1389 :     ----------------------------------------------------------------------
1390 :     Name: Matthias Blume
1391 : blume 737 Date: 2000/11/24 17:45:00 JST
1392 :     Tag: blume-20001124-link
1393 :     Description:
1394 :    
1395 :     Drastically improved link traversal code for the case that the dynamic
1396 :     value was already loaded at bootstrap time. As a result, CM and CMB
1397 :     now both load blazingly fast -- even on a very slow machine. Also,
1398 :     memory consumption has been further reduced by this.
1399 :    
1400 :     Warning: The format of the PIDMAP file has changed. THerefore, to
1401 :     bootstrap you have to do this:
1402 :    
1403 :     1. Run CMB.make
1404 :     2. Make a symbolic link for the boot directory:
1405 :     ln -s sml.boot.ARCH-OS xxx
1406 :     3. "Rebuild" the boot directory:
1407 :     ./makeml -boot xxx -rebuild sml ; rm xxx
1408 :     4. Boot normally:
1409 :     ./makeml
1410 :    
1411 :     ----------------------------------------------------------------------
1412 :     Name: Matthias Blume
1413 : blume 735 Date: 2000/11/21 21:20:00 JST
1414 :     Tag: blume-20001121-tools
1415 :     Description:
1416 :    
1417 :     Continued hacking on autoloading problem -- with success this time.
1418 :     Also changed tool-plugin mechanism. See new CM manual.
1419 :    
1420 :     ----------------------------------------------------------------------
1421 :     Name: Matthias Blume
1422 : blume 734 Date: 2000/11/19 14:30:00 JST
1423 :     Tag: blume-20001119-autoload
1424 :     Description:
1425 :    
1426 :     Some hacking to make autoloading faster. Success for CMB, no success
1427 :     so far for CM. There is a reduced structure CM' that autoloads faster.
1428 :     (This is a temporary, non-documented hack to be eliminated again when
1429 :     the general problem is solved.)
1430 :    
1431 :     ----------------------------------------------------------------------
1432 :     Name: Matthias Blume
1433 : blume 733 Date: 2000/11/17 14:10:00 JST
1434 :     Tag: blume-20001117-pickle-lib
1435 :     Description:
1436 :    
1437 :     1. Eliminated comp-lib.cm
1438 :     2. Made pickle-lib.cm
1439 :     3. Eliminated all uses of intset.sml (from comp-lib.cm)
1440 :     4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
1441 :     equivalent constructs from smlnj-lib.cm (INtHashTable).
1442 :     5. Point 4. also goes for those uses of intmap.* in MLRISC.
1443 :     Duplicated intmap modules thrown out.
1444 :     6. Hunted down all duplicated SCC code and replaced it with
1445 :     equivalent stuff (GraphSCCFn from smlnj-lib.cm).
1446 :     7. Rewrote Feedback module.
1447 :     8. Moved sortedlist.sml into viscomp-lib.cm. Eventually it
1448 :     should be thrown out and equivalent modules from smlnj-lib.cm
1449 :     should be used (IntRedBlackSet, IntListSet, ...).
1450 :    
1451 :     Confirmed that compiler compiles to fixpoint.
1452 :    
1453 :     ----------------------------------------------------------------------
1454 : leunga 731 Name: Allen Leung
1455 :     Date: 2000/11/10 18:00:00
1456 :     Tag: leunga-20001110-new-x86-fp
1457 :    
1458 :     A new x86 floating point code generator has been added.
1459 :     By default this is turned off. To turn this on, do:
1460 :    
1461 :     CM.autoload "$smlnj/compiler.cm";
1462 :     Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
1463 :    
1464 :     Changes:
1465 :    
1466 :     1. Changed FTAN to FPTAN so that the assembly output is correct.
1467 :     2. Changed the extension callback for FTANGENT to generate:
1468 :    
1469 :     fptan
1470 :     fstp %st(0)
1471 :     instead of
1472 :     fptan
1473 :     fstpl ftempmem
1474 :    
1475 :     3. Numerous assembly fixes for x86.
1476 :    
1477 :     5. Cleaned up the machine code output module x86/x86MC.sml and added
1478 :     support for a whole bunch of instructions and addressing modes:
1479 :    
1480 :     fadd/fsub/fsubr/fmul/fdiv/fdivr %st, %st(n)
1481 :     faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp %st, %st(n)
1482 :     fadd/fsub/fsubr/fmul/fdiv/fdivr %st(n), %st
1483 :     fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
1484 :     fxch %st(n)
1485 :     fld %st(n)
1486 :     fst %st(n)
1487 :     fst mem
1488 :     fstp %st(n)
1489 :     fucom %st(n)
1490 :     fucomp %st(n)
1491 :    
1492 :     All these are now generated when the fast fp mode is turned on.
1493 :    
1494 :     6. Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
1495 :    
1496 :     ----------------------------------------------------------------------
1497 : blume 729 Name: Matthias Blume
1498 :     Date: 2000/11/09 11:20:00 JST
1499 :     Tag: blume-20001109-scc
1500 :     Description:
1501 :    
1502 :     Eliminated some code duplication:
1503 :    
1504 :     1. Added "where" clause to GraphSCCFn in SML/NJ Library.
1505 :     (Otherwise the functor is useless.)
1506 :     2. Used GraphSCCFn where SCCUtilFun was used previously.
1507 :     3. Got rid of SCCUtilFun (in comp-lib.cm).
1508 :    
1509 :     ----------------------------------------------------------------------
1510 : george 721 Name: Lal George
1511 :     Date: 2000/11/06 09:02:21 EST 2000
1512 :     Tag: Release_110_30
1513 :     Description:
1514 :    
1515 :     - Version 110.30
1516 :     ----------------------------------------------------------------------
1517 : blume 715 Name: Matthias Blume
1518 : blume 716 Date: 2000/11/04 14:45:00
1519 :     Tag: blume-20001104-mlbuild
1520 :     Description:
1521 :    
1522 :     - Made ml-build faster on startup.
1523 :     - Documentation fixes.
1524 :    
1525 :     ----------------------------------------------------------------------
1526 :     Name: Matthias Blume
1527 : blume 715 Date: 2000/11/02 17:00:00 JST
1528 :     Tag: blume-20001102-condcomp
1529 :     Description:
1530 :    
1531 :     - Small tweaks to pickler -- new BOOTFILES!
1532 :     - Version bumped to 110.29.2.
1533 :     - Added conditional compilation facility to init.cmi (see comment there).
1534 :     ----------------------------------------------------------------------
1535 : leunga 713 Name: Allen Leung
1536 :     Date: 2000/10/23 19:31:00
1537 :     Tag: leunga-20001023-demo-ra
1538 :    
1539 :     1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
1540 :     2. Test programs for the graph library updated
1541 :     3. Some new MLRISC demo programs added
1542 :    
1543 :     ----------------------------------------------------------------------
1544 : blume 710 Name: Matthias Blume
1545 : blume 711 Date: 2000/08/31 22:15:00 JST
1546 :     Tag: blume-20001017-errmsg
1547 :     Description:
1548 :    
1549 :     More error message grief: Where there used to be no messages, there
1550 :     now were some that had bogus error regions. Fixed.
1551 :    
1552 :     ----------------------------------------------------------------------
1553 :     Name: Matthias Blume
1554 : blume 710 Date: 2000/08/31 17:30:00 JST
1555 :     Tag: blume-20001017-v110p29p1
1556 :     Description:
1557 :    
1558 :     I made a version 110.29.1 with new bootfiles.
1559 :    
1560 :     Changes: Modified pickler/unpickler for faster and leaner unpickling.
1561 :     CM documentation changes and a small bugfix in CM's error reporting.
1562 :    
1563 :     ----------------------------------------------------------------------
1564 : george 705 Name: Lal George
1565 :     Date: 2000/09/27 14:42:35 EDT
1566 :     Tag: george-20000927-nodestatus
1567 :     Description:
1568 :    
1569 :     Changed the type of the nodestatus, so that:
1570 :    
1571 :     SPILLED(~1) is now SPILLED
1572 :     SPILLED(m) where m>=0 is now MEMREG(m)
1573 :     SPILLED(s) where s<~1 is now SPILL_LOC(~s)
1574 :    
1575 :     ----------------------------------------------------------------------
1576 : blume 697 Name: Matthias Blume
1577 : blume 703 Date: 2000/09/07 14:45:00 JST
1578 :     Tag: blume-20000907-cmerrmsg
1579 :     Description:
1580 :    
1581 :     Small tweak to CM to avoid getting ML syntax error messages twice.
1582 :    
1583 :     ----------------------------------------------------------------------
1584 :     Name: Matthias Blume
1585 : blume 701 Date: 2000/08/31 18:00:00 JST
1586 :     Tag: blume-20000831-cvsbootfiles
1587 :     Description:
1588 :    
1589 :     New URL for boot files (because the 110.29 files on the BL server do
1590 :     now work correctly with my updated install scripts for yacc and lex).
1591 :    
1592 :     ----------------------------------------------------------------------
1593 :     Name: Matthias Blume
1594 : blume 697 Date: 2000/08/08 12:33:00 JST
1595 :     Tag: blume-20000808-manual
1596 :     Description:
1597 :    
1598 :     Tiny update to CM manual.
1599 :    
1600 :     ----------------------------------------------------------------------
1601 : leunga 695 Name: Allen Leung
1602 :     Date: 2000/08/7 19:31:00
1603 :     Tag: leunga-20000807-a-whole-bunch-of-stuff
1604 :    
1605 :     Moby, C--, SSA, x86, machine descriptions etc. Should only affect C--
1606 :     and Mobdy.
1607 :    
1608 :     1. x86
1609 :    
1610 :     a. Fixes to peephole module by John and Dan.
1611 :     b. Assembly fix to SETcc by Allen.
1612 :     c. Fix to c-call by John.
1613 :     d. Fix to spilling by John. (This one deals with the missing FSTPT case)
1614 :     e. Instruction selection optimization to SETcc as suggested by John.
1615 :    
1616 :     For example,
1617 :    
1618 :     MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
1619 :    
1620 :     should generate:
1621 :    
1622 :     MOVL a, x
1623 :     SUBL b, x
1624 :     SHRL 31, x
1625 :    
1626 :     2. IR stuff
1627 :    
1628 :     A bunch of new DJ-graph related algorithms added. These
1629 :     speed up SSA construction.
1630 :    
1631 :     3. SSA + Scheduling
1632 :    
1633 :     Added code for SSA and scheduling to the repository
1634 :    
1635 :     ----------------------------------------------------------------------
1636 : george 694 Name: Lal George
1637 :     Date: 2000/07/27 11:53:14 EDT
1638 :    
1639 :     Tag: lal-20000727-linux-ppc
1640 :     Description:
1641 :    
1642 :     Made changes to support Linux PPC.
1643 :     p.s. I have confirmation that the 110.29 boot files work fine.
1644 :    
1645 :     ----------------------------------------------------------------------
1646 : blume 684 Name: Matthias Blume
1647 : blume 692 Date: 2000/07/27 17:40:00 JST
1648 :     Tag: blume-20000727-scripts
1649 :     Description:
1650 :    
1651 :     !!!! WARNING !!!!
1652 :     You must recompile the runtime system!
1653 :     !!!! WARNING !!!!
1654 :    
1655 :     This is basically another round of script-enhancements:
1656 :    
1657 :     1. sml, ml-build, and ml-makedepend accept options -D and -U to define
1658 :     and undefine CM preprocessor symbols.
1659 :    
1660 :     2. ml-build avoids generating a new heap image if it finds that the
1661 :     existing one is still ok. (The condition is that no ML file had to
1662 :     be recompiled and all ML files are found to be older that the heap
1663 :     file.)
1664 :    
1665 :     To make this work smoothly, I also hacked the runtime system as
1666 :     well as SMLofNJ.SysInfo to get access to the heap image suffix
1667 :     (.sparc-solaris, ...) that is currently being used.
1668 :    
1669 :     Moreover, the signature of CM.mk_standalone has changed. See the
1670 :     CM manual.
1671 :    
1672 :     3. ml-makedepend accepts additional options -n, -a, and -o. (See the
1673 :     CM manual for details.)
1674 :    
1675 :     4. More CM manual updates:
1676 :     - all of the above has been documented.
1677 :     - there is now a section describing the (CM-related) command line
1678 :     arguments that are accepted by the "sml" command
1679 :    
1680 :     ----------------------------------------------------------------------
1681 :     Name: Matthias Blume
1682 : blume 691 Date: 2000/07/25 16:20:00 JST
1683 :     Tag: blume-20000725-makedepend
1684 :     Description:
1685 :    
1686 :     Added a script called ml-makedepend. This can be used in makefiles
1687 :     for Unix' make in a way very similar to the "makedepend" command for
1688 :     C.
1689 :    
1690 :     The script internally uses function CM.sources.
1691 :    
1692 :     Synopsis:
1693 :    
1694 :     ml-makedepend [-f makefile] cmfile targetname
1695 :    
1696 :     The default for the makefile is "makefile" (or "Makefile" should
1697 :     "makefile" not exist).
1698 :    
1699 :     ml-makedepend adds a cmfile/targetname-specific section to this
1700 :     makefile (after removing the previous version of this section). The
1701 :     section contains a single dependency specification with targetname on
1702 :     the LHS (targetname is an arbitrary name), and a list of files derived
1703 :     from the cmfile on the RHS. Some of the files on the RHS are
1704 :     ARCH/OPSYS-specific. Therefore, ml-makedepend inserts references to
1705 :     "make" variables $(ARCH) and $(OPSYS) in place of the corresponding
1706 :     path names. The makefile writer is responsible for making sure that
1707 :     these variables have correct at the time "make" is invoked.
1708 :    
1709 :     ----------------------------------------------------------------------
1710 :     Name: Matthias Blume
1711 : blume 690 Date: 2000/07/22 23:30:00 JST
1712 :     Tag: blume-20000722-urlupdate
1713 :     Description:
1714 :    
1715 :     Changed BOOT and config/srcarchiveurl to point to BL server:
1716 :    
1717 :     ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
1718 :    
1719 :     ----------------------------------------------------------------------
1720 :     Name: Matthias Blume
1721 : blume 686 Date: 2000/07/18 18:00:00 JST
1722 :     Tag: blume-20000718-Version_110_29
1723 :     Description:
1724 :    
1725 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
1726 :    
1727 :     2. Updated config/version to 110.29
1728 :    
1729 :     3. Updated config/srcarchiveurl
1730 :    
1731 :     3. New boot files!
1732 :     ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
1733 :    
1734 :     ----------------------------------------------------------------------
1735 :     Name: Matthias Blume
1736 : blume 684 Date: 2000/07/11 13:58:00 JST
1737 :     Tag: blume-20000711-doctypo
1738 :     Description:
1739 :    
1740 :     Fixed a few typos in CM manual.
1741 :    
1742 :     ----------------------------------------------------------------------
1743 : leunga 683 Name: Allen Leung
1744 :     Date: 2000/06/15 00:38:00
1745 :     Tag: leunga-20000704-sparc-x86
1746 :    
1747 :     1. x86 peephole improvement sp += k; sp -= k => nop [from John]
1748 :     2. fix to x86 RET bug [found by Dan Grossman]
1749 :     3. sparc assembly bug fix for ticc instructions [found by Fermin]
1750 :    
1751 :     Affects c-- and moby only
1752 :    
1753 :     ----------------------------------------------------------------------
1754 : blume 680 Name: Matthias Blume
1755 : blume 682 Date: 2000/07/04 15:26:00
1756 :     Tag: blume-20000704-trigger
1757 :     Description:
1758 :    
1759 :     1. Improvements to CM manual.
1760 :     2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
1761 :     of getting a back-trace. The function, when called, raises an
1762 :     internal exception which explicitly carries the full back-trace history,
1763 :     so it is unaffected by any intervening handle-raise pairs ("trivial"
1764 :     or not). The interactive loop will print that history once it arrives
1765 :     at top level.
1766 :     Short of having all exceptions implicitly carry the full history, the
1767 :     recommended way of using this facility is:
1768 :     - compile your program with instrumentation "on"
1769 :     - run it, when it raises an exception, look at the history
1770 :     - if the history is "cut off" because of some handler, go and modify
1771 :     your program so that it explicitly calls BTrace.trigger
1772 :     - recompile (still instrumented), and rerun; look at the full history
1773 :    
1774 :     ----------------------------------------------------------------------
1775 :     Name: Matthias Blume
1776 :     Date: 2000/07/03 15:36:00 JST
1777 : blume 680 Tag: blume-20000702-manual
1778 :     Description:
1779 :    
1780 :     Small corrections and updates to CM manual.
1781 :    
1782 :     ----------------------------------------------------------------------
1783 : blume 682 Name: Matthias Blume
1784 : blume 679 Date: 2000/06/29 16:04:00 JST
1785 :     Tag: blume-20000629-yacctool
1786 :     Description:
1787 :    
1788 :     Changes:
1789 :    
1790 :     1. Class "mlyacc" now takes separate arguments to pass options to
1791 :     generated .sml- and .sig-files independently.
1792 :     2. Corresponding CM manual updates.
1793 :     3. BTrace module now also reports call sites. (However, for loop clusters
1794 :     it only shows from where the cluster was entered.) There are associated
1795 :     modifications to core.sml, internals.{sig,sml}, btrace.sml, and btimp.sml.
1796 :    
1797 :     ----------------------------------------------------------------------
1798 : blume 675 Name: Matthias Blume
1799 : blume 678 Date: 2000/06/27 16:51:00 JST
1800 :     Tag: blume-20000627-noweb
1801 :     Description:
1802 :    
1803 :     Changes:
1804 :    
1805 :     1. Implemented "subdir" and "witness" options for noweb tool.
1806 :     This caused some slight internal changes in CM's tool implementation.
1807 :     2. Fixed bug in "tool plugin" mechanism. This is essentially cleaning
1808 :     some remaining issues from earlier path anchor changes.
1809 :     3. Updated CM manual accordingly.
1810 :    
1811 :     4. Changed implementation of back-tracing so that I now consider it
1812 :     ready for prime-time.
1813 :    
1814 :     In particular, you don't have to explicitly trigger the back-trace
1815 :     anymore. Instead, if you are running BTrace-instrumented code and
1816 :     there is an uncaught exception (regardless of whether or not it was
1817 :     raised in instrumented code), the top-level evalloop will print
1818 :     the back-trace.
1819 :    
1820 :     Features:
1821 :    
1822 :     - Instrumented and uninstrumented code work together seemlessly.
1823 :     (Of course, uninstrumented code is never mentioned in actual
1824 :     back-traces.)
1825 :    
1826 :     - Asymptotic time- and space-complexity of instrumented code is
1827 :     equal to that of uninstrumented code. (This means that
1828 :     tail-recursion is preserved by the instrumentation phase.)
1829 :    
1830 :     - Modules whose code has been instrumented in different sessions
1831 :     work together without problem.
1832 :    
1833 :     - There is no penalty whatsoever on uninstrumented code.
1834 :    
1835 :     - There is no penalty on "raise" expressions, even in
1836 :     instrumented code.
1837 :    
1838 :     A potential bug (or perhaps it is a feature, too):
1839 :    
1840 :     A back-trace reaches no further than the outermost instrumented
1841 :     non-trivial "raise". Here, a "trivial" raise is one that is the
1842 :     sole RHS of a "handle" rule. Thus, back-traces reach trough
1843 :    
1844 :     <exp> handle e => raise e
1845 :    
1846 :     and even
1847 :    
1848 :     <exp> handle Foo => raise Bar
1849 :    
1850 :     and, of course, through
1851 :    
1852 :     <exp> handle Foo => ...
1853 :    
1854 :     if the exception was not Foo.
1855 :    
1856 :     Back-traces always reach right through any un-instrumented code
1857 :     including any of its "handle" expressions, trivial or not.
1858 :    
1859 :     To try this out, do the following:
1860 :    
1861 :     - Erase all existing binfiles for your program.
1862 :     (You may keep binfiles for those modules where you think you
1863 :     definitely don't need back-tracing.)
1864 :     - Turn on back-trace instrumentation:
1865 :     SMLofNJ.Internals.BTrace.mode (SOME true);
1866 :     - Recompile your program. (I.e., run "CM.make" or "use".)
1867 :     - You may now turn instrumentation off again (if you want):
1868 :     SMLofNJ.Internals.BTrace.mode (SOME false);
1869 :     - Run your program as usual. If it raises an exception that
1870 :     reaches the interactive toplevel, then a back-trace will
1871 :     automatically be printed. After that, the toplevel loop
1872 :     will print the exception history as usual.
1873 :    
1874 :     ----------------------------------------------------------------------
1875 :     Name: Matthias Blume
1876 : blume 677 Date: 2000/06/26 09:56:46 JST
1877 :     Tag: blume-20000626-setup
1878 :     Description:
1879 :    
1880 :     CM: - setup-parameter to "sml" added; this can be used to run arbitrary
1881 :     ML code before and after compiling a file (e.g., to set compiler
1882 :     flags)
1883 :    
1884 :     Compiler: - improved btrace API (in core.sml, internals.{sig,sml})
1885 :     - associated changes to btrace.sml (BTrace instrumentation pass)
1886 :     - cleaner implementation of btimp.sml (BTrace tracing and report
1887 :     module)
1888 :    
1889 :     CM manual: * new path encoding documented
1890 :     * description of setup-parameter to "sml" added
1891 :    
1892 :     The biggest user-visible change to back-tracing is that it is no
1893 :     longer necessary to compile all traced modules within the same
1894 :     session. (This was a real limitation.)
1895 :    
1896 :     ----------------------------------------------------------------------
1897 :     Name: Matthias Blume
1898 : blume 676 Date: 2000/06/24 12:40:00 JST
1899 :     Tag: blume-20000624-startup
1900 :     Description:
1901 :    
1902 :     Fixes startup slowdown problem. (I was calling SrcPath.sync a _tad_
1903 :     bit too often -- to put it mildly. :)
1904 :    
1905 :     ----------------------------------------------------------------------
1906 :     Name: Matthias Blume
1907 : blume 675 Date: 2000/06/23 18:20:00 JST
1908 :     Tag: blume-20000623-btrace
1909 :     Description:
1910 :    
1911 :     This updates adds a backtrace facility to aid programmers in debugging
1912 :     their programs. This involves the following changes:
1913 :    
1914 :     1. Module system/smlnj/init/core.sml (structure _Core) now has hooks for
1915 :     keeping track of the current call stack. When programs are compiled
1916 :     in a special mode, the compiler will insert calls to these hooks
1917 :     into the user program.
1918 :     "Hook" means that it is possible for different implementations of
1919 :     back-tracing to register themselves (at different times).
1920 :    
1921 :     2. compiler/MiscUtil/profile/btrace.sml implements the annotation phase
1922 :     as an Absyn.dec->Absyn.dec rewrite. Normally this phase is turned off.
1923 :     It can be turned on using this call:
1924 :     SMLofNJ.Internals.BTrace.mode (SOME true);
1925 :     Turning it off again:
1926 :     SMLofNJ.Internals.BTrace.mode (SOME false);
1927 :     Querying the current status:
1928 :     SMLofNJ.Internals.BTrace.mode NONE;
1929 :     Annotated programs are about twice as big as normal ones, and they
1930 :     run a factor of 2 to 4 slower with a dummy back-trace plugin (one
1931 :     where all hooks do nothing). The slowdown with a plugin that is
1932 :     actually useful (such as the one supplied by default) is even greater,
1933 :     but in the case of the default plugin it is still only an constant
1934 :     factor (amortized).
1935 :    
1936 :     3. system/Basis/Implementation/NJ/internals.{sig,sml} have been augmented
1937 :     with a sub-structure BTrace for controlling back-tracing. In particular,
1938 :     the above-mentioned function "mode" controls whether the annotation
1939 :     phase is invoked by the compiler. Another important function is
1940 :     "trigger": when called it aborts the current execution and causes
1941 :     the top-level loop to print a full back-trace.
1942 :    
1943 :     4. compiler/MiscUtil/profile/btimp.sml is the current default plugin
1944 :     for back-tracing. It keeps track of the dynamic call stack and in
1945 :     addition to that it keeps a partial history at each "level" of that
1946 :     stack. For example, if a tail-calls b, b tail-calls c, and c tail-calls
1947 :     d and b (at separate times, dynamically), then the report will show:
1948 :    
1949 :     GOTO d
1950 :     /c
1951 :     GOTO \b
1952 :     CALL a
1953 :    
1954 :     This shows that there was an initial non-tail call of a, then a
1955 :     tail-call to b or c, looping behavior in a cluster of functions that
1956 :     consist of b and c, and then a goto from that cluster (i.e., either from
1957 :     b or from c) to d.
1958 :    
1959 :     Note that (depending on the user program) the amount of information
1960 :     that the back-trace module has to keep track of at each level is bounded
1961 :     by a constant. Thus, the whole implementation has the same asymptotical
1962 :     complexity as the original program (both in space and in time).
1963 :    
1964 :     5. compiler/TopLevel/interact/evalloop.sml has been modified to
1965 :     handle the special exception SMLofNJ.Internals.BTrace.BTrace
1966 :     which is raised by the "trigger" function mentioned above.
1967 :    
1968 :     Notes on usage:
1969 :    
1970 :     - Annotated code works well together with unannotated code:
1971 :     Unannotated calls simply do not show up at all in the backtrace.
1972 :    
1973 :     - It is not a good idea to let modules that were annotated during
1974 :     different sessions run at the same time. This is because the compiler
1975 :     chooses small integers to identify individual functions, and there
1976 :     will be clashes if different modules were compiled in separate sessions.
1977 :     (Nothing will crash, and you will even be told about the clashes, but
1978 :     back-trace information will in general not be useful.)
1979 :    
1980 :     - Back-tracing can be confused by callcc and capture.
1981 :    
1982 :     - The only way of getting a back-trace right now is to explicitly
1983 :     invoke the "trigger" function from your user program. Eventually, we
1984 :     should make every exception carry back-trace information (if
1985 :     available). But since this creates more overhead at "raise"-time
1986 :     (similar to the current exnHistory overhead), I have not yet
1987 :     implemented this. (The implementation will be rather easy.) With
1988 :     exceptions carrying back-trace information, this facility will be even
1989 :     more useful because users don't need to modify their programs...
1990 :    
1991 :     - While it is possible to compile the compiler with back-trace
1992 :     annotations turned on (I did it to get some confidence in
1993 :     correctness), you must make absolutely sure that core.sml and
1994 :     btimp.sml are compiled WITHOUT annotation! (core.sml cannot actually
1995 :     be compiled with annotation because there is no core access yet, but
1996 :     if you compile btimp.sml with annotation, then the system will go into
1997 :     an infinite recursion and crash.)
1998 :     Since CM currently does not know about BTrace, the only way to turn
1999 :     annotations on and off for different modules of the compiler is to
2000 :     interrupt CMB.make, change the settings, and re-invoke it. Of course,
2001 :     this is awkward and clumsy.
2002 :    
2003 :     Sample sessions:
2004 :    
2005 :     Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
2006 :     - SMLofNJ.Internals.BTrace.mode (SOME true);
2007 :     [autoloading]
2008 :     [autoloading done]
2009 :     val it = false : bool
2010 :     - structure X = struct
2011 :     - fun main n = let
2012 :     - fun a (x, 0) = d x
2013 :     - | a (x, n) = b (x, n - 1)
2014 :     - and b (x, n) = c (x, n)
2015 :     - and c (x, n) = a (x, n)
2016 :     - and d x = e (x, 3)
2017 :     - and e (x, 0) = f x
2018 :     - | e (x, n) = e (x, n - 1)
2019 :     - and f 0 = SMLofNJ.Internals.BTrace.trigger ()
2020 :     - | f n = n * g (n - 1)
2021 :     - and g n = a (n, 3)
2022 :     - in
2023 :     - f n
2024 :     - end
2025 :     - end;
2026 :     structure X : sig val main : int -> int end
2027 :     - X.main 3;
2028 :     *** BACK-TRACE ***
2029 :     GOTO stdIn:4.2-13.20: X.main[2].f
2030 :     GOTO-( stdIn:4.2-13.20: X.main[2].e
2031 :     GOTO stdIn:4.2-13.20: X.main[2].d
2032 :     / stdIn:4.2-13.20: X.main[2].a
2033 :     | stdIn:4.2-13.20: X.main[2].b
2034 :     GOTO-\ stdIn:4.2-13.20: X.main[2].c
2035 :     CALL stdIn:4.2-13.20: X.main[2].g
2036 :     GOTO stdIn:4.2-13.20: X.main[2].f
2037 :     GOTO-( stdIn:4.2-13.20: X.main[2].e
2038 :     GOTO stdIn:4.2-13.20: X.main[2].d
2039 :     / stdIn:4.2-13.20: X.main[2].a
2040 :     | stdIn:4.2-13.20: X.main[2].b
2041 :     GOTO-\ stdIn:4.2-13.20: X.main[2].c
2042 :     CALL stdIn:4.2-13.20: X.main[2].g
2043 :     GOTO stdIn:4.2-13.20: X.main[2].f
2044 :     GOTO-( stdIn:4.2-13.20: X.main[2].e
2045 :     GOTO stdIn:4.2-13.20: X.main[2].d
2046 :     / stdIn:4.2-13.20: X.main[2].a
2047 :     | stdIn:4.2-13.20: X.main[2].b
2048 :     GOTO-\ stdIn:4.2-13.20: X.main[2].c
2049 :     CALL stdIn:4.2-13.20: X.main[2].g
2050 :     GOTO stdIn:4.2-13.20: X.main[2].f
2051 :     CALL stdIn:2.15-17.4: X.main[2]
2052 :     -
2053 :    
2054 :     (Note that because of a FLINt bug the above code currently does not
2055 :     compile without BTrace turned on.)
2056 :    
2057 :     Here is another example, using my modified Tiger compiler:
2058 :    
2059 :     Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
2060 :     - SMLofNJ.Internals.BTrace.mode (SOME true);
2061 :     [autoloading]
2062 :     [autoloading done]
2063 :     val it = false : bool
2064 :     - CM.make "sources.cm";
2065 :     [autoloading]
2066 :     ...
2067 :     [autoloading done]
2068 :     [scanning sources.cm]
2069 :     [parsing (sources.cm):parse.sml]
2070 :     [creating directory CM/SKEL ...]
2071 :     [parsing (sources.cm):tiger.lex.sml]
2072 :     ...
2073 :     [wrote CM/sparc-unix/semant.sml]
2074 :     [compiling (sources.cm):main.sml]
2075 :     [wrote CM/sparc-unix/main.sml]
2076 :     [New bindings added.]
2077 :     val it = true : bool
2078 :     - Main.compile ("../testcases/merge.tig", "foo.out");
2079 :     *** BACK-TRACE ***
2080 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trvar
2081 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
2082 :     CALL lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
2083 :     GOTO lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
2084 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
2085 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
2086 :     CALL lib/semant.sml:488.3-505.6: SemantFun[2].transDec.trdec[2].transBody[2]
2087 :     / lib/semant.sml:411.65-543.8: SemantFun[2].transDec
2088 :     CALL-\ lib/semant.sml:413.2-540.9: SemantFun[2].transDec.trdec[2]
2089 :     CALL lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
2090 :     CALL lib/semant.sml:8.52-558.4: SemantFun[2].transProg[2]
2091 :     CALL main.sml:1.18-118.4: Main.compile[2]
2092 :     -
2093 :    
2094 :     ----------------------------------------------------------------------
2095 : blume 673 Name: Matthias Blumen
2096 :     Date: 2000/06/21 18:00:00 JST
2097 :     Tag: blume-20000621-manual
2098 :     Description:
2099 :    
2100 :     CM manual update: Path environments documented.
2101 :    
2102 :     ----------------------------------------------------------------------
2103 : blume 666 Name: Matthias Blume
2104 : blume 672 Date: 2000/06/19 13:40:00
2105 :     Tag: blume-20000619-manual
2106 :     Description:
2107 :    
2108 :     CM manual and system/README update. This only covers the fact that
2109 :     there are no more implicit anchors. (Path environments and the "bind"
2110 :     option to "cm" have yet to be documented.)
2111 :    
2112 :     ----------------------------------------------------------------------
2113 :     Name: Matthias Blume
2114 : blume 671 Date: 2000/06/19 11:05:00 JST
2115 :     Tag: blume-20000619-chdir-bugfix
2116 :     Description:
2117 :    
2118 :     Fixed a bug in new SrcPath module that sometimes led to a bad chDir call.
2119 :    
2120 :     ----------------------------------------------------------------------
2121 :     Name: Matthias Blume
2122 : blume 670 Date: 2000/06/18 22:00:10 JST
2123 :     Tag: blume-20000618-implicit-anchors-really-gone
2124 :     Description:
2125 :    
2126 :     I updates the previous HISTORY entry where I forgot to mention that
2127 :     implicit anchors are no longer with us.
2128 :    
2129 :     The current update also gets rid of the (now useless) controller
2130 :     CM.Control.implicit_anchors.
2131 :    
2132 :     ----------------------------------------------------------------------
2133 :     Name: Matthias Blume
2134 : blume 666 Date: 2000/06/16 17:30:00 JST
2135 :     Tag: blume-20000616-anchorenv
2136 :     Description:
2137 :    
2138 :     This patch implements the long anticipated (just kidding :) "anchor
2139 :     environment" mechanism. In the course of doing this, I also
2140 :     re-implemented CM's internal "SrcPath" module from scratch. The new
2141 :     one should be more robust in certain boundary cases. In any case, it
2142 :     is a lot cleaner than its predecessor (IMHO).
2143 :    
2144 :     This time, although there is yet another boot file format change, I
2145 :     kept the unpickler backward-compatible. As a result, no new bootfiles
2146 :     are necessary and bootstrapping is straightforward. (You cannot read
2147 :     new bootfiles into an old system, but the other way around is no
2148 :     problem.)
2149 :    
2150 :     Visible changes:
2151 :    
2152 : blume 670 ** 0. Implicit path anchors (without the leading $-symbol) are no
2153 :     longer recognized at all. This means that such path names are not
2154 :     illegal either. For example, the name basis.cm simply refers to a
2155 :     local file called "basis.cm" (i.e, the name is an ordinary path
2156 :     relative to .cm-files directory). Or, to put it differently, only
2157 :     names that start with $ are anchored paths.
2158 : blume 666
2159 : blume 670 ** 1. The $<singlearc> abbreviation for $/<singlearc> has finally
2160 :     vanished.
2161 :    
2162 :     John (Reppy) had critizised this as soon as I originally proposed and
2163 : blume 666 implemented it, but at that time I did not really deeply believe
2164 :     him. :) Now I came full-circle because I need the $<singlearc> syntax
2165 :     in another place where it cannot be seen as an abbreviation for
2166 :     $/<singlearc>. To avoid the confusion, $<singlearc> now means what it
2167 :     seems to mean (i.e., it "expands" into the corresponding anchor
2168 :     value).
2169 :    
2170 :     However, when paths are used as members in CM description files, it
2171 :     continues to be true that there must be at least another arc after the
2172 :     anchor. This is now enforced separately during semantic analysis
2173 : blume 670 (i.e., from a lexical/syntactical point of view, the notation is ok.)
2174 : blume 666
2175 :     ** 2. The "cm" class now accepts an option "bind". The option's value
2176 :     is a sub-option list of precisely two items -- one labeled "anchor"
2177 :     and the other one labeled "value". As you might expect, "anchor" is
2178 :     used to specify an anchor name to be bound, and "value" specifies what
2179 :     the anchor is being bound to.
2180 :    
2181 :     The value must be a directory name and can be given in either standard
2182 :     syntax (including the possibility that it is itself an anchored path)
2183 :     or native syntax.
2184 :    
2185 :     Examples:
2186 :    
2187 :     foo.cm (bind:(anchor:bar value:$mystuff/bar))
2188 :     lib.cm (bind:(anchor:a value:"H:\\x\\y\\z")) (* only works under windows *)
2189 :    
2190 :     and so on.
2191 :    
2192 :     The meaning of this is that the .cm-file will be processed with an
2193 :     augmented anchor environment where the given anchor(s) is/are bound to
2194 :     the given values(s).
2195 :    
2196 :     The rationale for having this feature is this: Suppose you are trying
2197 :     to use two different (already stable) libraries a.cm and b.cm (that
2198 :     you perhaps didn't write yourself). Further, suppose each of these
2199 :     two libraries internally uses its own auxiliary library $aux/lib.cm.
2200 :     Normally you would now have a problem because the anchor "lib" can not
2201 :     be bound to more than one value globally. Therefore, the project that
2202 :     uses both a.cm and b.cm must locally redirect the anchor to some other
2203 :     place:
2204 :    
2205 :     a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
2206 :     b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
2207 :    
2208 :     This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
2209 :     /usr/lib/smlnj/b-stuff/aux.cm, respectively.
2210 :    
2211 :     Hard-wiring path names is a bit inflexible (and CM will verbosely warn
2212 :     you when you do so at the time of CM.stabilize). Therefore, you can
2213 :     also use an anchored path as the value:
2214 :    
2215 :     a.cm (bind:(anchor:lib value:$a-lib))
2216 :     b.cm (bind:(anchor:lib value:$b-lib))
2217 :    
2218 :     Now you can globally configure (using the usual CM.Anchor.anchor or
2219 :     pathconfig machinery) bindings for "a-lib" and "b-lib". Since "lib"
2220 :     itself is always locally bound, setting it globally is no longer
2221 :     meaningful or necessary (but it does not hurt either). In fact, "lib"
2222 :     can still be used as a global anchor for separate purposes. As a
2223 :     matter of fact, one can locally define "lib" in terms of a global
2224 :     "lib":
2225 :    
2226 :     a.cm (bind:(anchor:lib value:$lib/a))
2227 :     b.cm (bind:(anchor:lib value:$lib/b))
2228 :    
2229 :     ** 3: The encoding of path names has changed. This affects the way
2230 :     path names are shown in CM's progress report and also the internal
2231 :     protocol encoding used for parallel make.
2232 :    
2233 :     The encoding now uses one or more ':'-separated segments. Each
2234 :     segments corresponds to a file that has been specified relative to the
2235 :     file given by its preceding segment. The first segment is either
2236 :     relative to the CWD, absolute, or anchored. Each segment itself is
2237 :     basically a Unix pathname; all segments but the first are relative.
2238 :    
2239 :     Example:
2240 :    
2241 :     $foo/bar/baz.cm:a/b/c.sml
2242 :    
2243 :     This path denotes the file bar/a/b/c.sml relative to the directory
2244 :     denoted by anchor "foo". Notice that the encoding also includes
2245 :     baz.cm which is the .cm-file that listed a/b/c.sml. As usual, such
2246 :     paths are resolved relative to the .cm-files directory, so baz.cm must
2247 :     be ignored to get the "real" pathname.
2248 :    
2249 :     To make this fact more obvious, CM puts the names of such "virtual
2250 :     arcs" into parentheses when they appear in progress reports. (No
2251 :     parentheses will appear in the internal protocol encoding.) Thus,
2252 :     what you really see is:
2253 :    
2254 :     $foo/bar/(baz.cm):a/b/c.sml
2255 :    
2256 :     I find this notation to be much more informative than before.
2257 :    
2258 :     Another new feature of the encoding is that special characters
2259 :     including parentheses, colons, (back)slashes, and white space are
2260 :     written as \ddd (where ddd is the decimal encoding of the character).
2261 :    
2262 : blume 670 *** The CM manual still needs to be updated.
2263 :    
2264 : blume 666 ----------------------------------------------------------------------
2265 : leunga 660 Name: Allen Leung
2266 :     Date: 2000/06/15 00:38:00
2267 :     Tag: leunga-20000615-x86-peephole
2268 :    
2269 :     x86 Peephole fix by Fermin. Affects c-- and moby only.
2270 :    
2271 :     ----------------------------------------------------------------------
2272 : blume 658 Name: Matthias Blume
2273 :     Date: 2000/06/12 11:40:00
2274 :     Tag: blume-20000612-parmakefix
2275 :     Description:
2276 :    
2277 :     More cleanup after changing the file naming scheme: This time I
2278 :     repaired the parallel make mechanism for CMB.make which I broke earlier.
2279 :    
2280 :     ----------------------------------------------------------------------
2281 : leunga 657 Name: Allen Leung
2282 :     Date: 2000/06/09 01:25:00
2283 :     Tag: leunga-20000609-various
2284 :    
2285 :     None of these things should affect normal SML/NJ operations
2286 :    
2287 :     1. Peephole improvements provided by Fermin (c--)
2288 :     2. New annotation DEFUSE for adding extra dependence (moby)
2289 :     3. New X86 LOCK instructions (moby)
2290 :     4. New machine description language for reservation tables (scheduling)
2291 :     5. Fixes to various optimization/analysis modules (branch chaining, dominator
2292 :     trees etc.)
2293 :     6. I've changed the CM files so that they can work with versions
2294 :     110.0.6, 110.25 and 110.28
2295 :    
2296 :     ----------------------------------------------------------------------
2297 : blume 652 Name: Matthias Blume
2298 : blume 656 Date: 2000/06/09 12:40:00
2299 :     Tag: blume-20000609-log
2300 :     Description:
2301 :    
2302 :     - Removed all(?) remaining RCS Log entries from sources.
2303 :    
2304 :     - Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
2305 :     anchored paths).
2306 :    
2307 :     ----------------------------------------------------------------------
2308 :     Name: Matthias Blume
2309 : blume 653 Date: 2000/06/07 17:00:00 JST
2310 :     Tag: blume-20000607-no-implicit-anchors
2311 :     Description:
2312 :    
2313 :     1. This update changes the default setting for
2314 :     CM.Control.implicit_anchors from true to false. This means that
2315 :     implicit anchors are no longer permitted by default. I also tried to
2316 :     make sure that nothing else still relies on implicit anchors.
2317 :     (This is the next step on the schedule towards a CM that does not even
2318 :     have the notion of implicit anchors anymore.)
2319 :    
2320 :     2. More CM manual updates.
2321 :    
2322 :     3. I managed to track down and fix the pickling bug I mentioned last
2323 :     time. Because of the previously existing workaround, this entails no
2324 :     immediate practical changes.
2325 :    
2326 :     ----------------------------------------------------------------------
2327 :     Name: Matthias Blume
2328 : blume 652 Date: 2000/06/06 11:15:00 JST
2329 :     Tag: blume-20000606-lazierpickle
2330 :     Description:
2331 :    
2332 :     !!!! NEW BOOT FILES !!!!
2333 :    
2334 :     * The main purpose of this update is to make library pickles lazier in
2335 :     order to reduce the initial space penalty for autoloading a library.
2336 :     As a result, it is now possible to have $smlnj/compiler.cm
2337 :     pre-registered. This should take care of the many complaints or
2338 :     inquiries about missing structure Compiler. This required changes to
2339 :     CM's internal data structures and small tweaks to some algorithms.
2340 :    
2341 :     As a neat additional effect, it is no longer necessary (for the sake
2342 :     of lean heap image files) to distinguish between a "minimal" CM and a
2343 :     "full" CM. Now, there is only one CM (i.e., the "full" version:
2344 :     $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
2345 :     interactive top level. ($smlnj/cm/minimal.cm is gone.)
2346 :    
2347 :     To make the life of compiler-hackers easier, "makeml" now also
2348 :     pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm). In other
2349 :     words, after you bootstrap a new sml for the first time, you will not
2350 :     have to autoload $smlnj/cmb.cm again afterwards. (The first time
2351 :     around you will still have to do it, though.)
2352 :    
2353 :     * A second change consists of major updates to the CM manual. There
2354 :     are now several appendices with summary information and also a full
2355 :     specification of the CM description file syntax.
2356 :    
2357 :     * In directory src/system I added the script "allcross". This script
2358 :     invokes sml and cross-compiles the compiler for all supported
2359 :     architectures. (Useful when providing a new set of boot files.)
2360 :    
2361 :     * There seems to be a latent bug in my "lazy pickles" mechanism. I
2362 :     added a small tweak to pickle-util.sml to work around this problem,
2363 :     but it is not a proper fix yet. I will investigate further. (The
2364 :     effect of the bug was an inflation of library pickle size.)
2365 :    
2366 :     * Version number increased to 110.28.1 (to avoid compatibility problems).
2367 :    
2368 :     ----------------------------------------------------------------------
2369 : leunga 646 Name: Allen Leung
2370 : leunga 648 Date: 2000/05/25 17:28 EDT
2371 :     Tag: leunga-20000525-ra
2372 :     Description:
2373 :    
2374 :     Fixed a bug in freezing phase of the register allocator.
2375 :    
2376 :     ----------------------------------------------------------------------
2377 :     Name: Allen Leung
2378 : leunga 647 Date: 2000/05/15 22:53 EDT
2379 : leunga 646 Tag: leunga-20000515-alpha-x86-ra
2380 :     Description:
2381 :    
2382 :     1. Alpha
2383 :    
2384 :     Slight cleanup. Removed the instruction SGNXL
2385 :    
2386 :     2. X86
2387 :    
2388 :     Added the following instructions to the instruction set:
2389 :    
2390 :     ROLx, RORx,
2391 :     BTx, BTSx, BTLx, BTRx,
2392 :     XCHGx, and variants with the LOCK prefix
2393 :    
2394 :     3. Register Allocation
2395 :    
2396 :     The module ra-rewrite-with-renaming has been improved.
2397 :    
2398 : leunga 647 These have no effect on SML/NJ.
2399 :    
2400 : leunga 646 ----------------------------------------------------------------------
2401 : blume 642 Name: Matthias Blume
2402 : blume 645 Date: 2000/05/15 16:20:00 JST
2403 :     Tag: blume-20000515-lightrebuild
2404 :     Description:
2405 :    
2406 :     1. I added an alternative to "-rebuild" to "makeml". The difference is
2407 :     that prior to calling CMB.make' the CM-variable "LIGHT" will be
2408 :     defined. In effect, the command will not build any cross-compiler
2409 :     backends and therefore finish more quickly.
2410 :    
2411 :     The "fixpt" script also takes a "-light" switch to be able to use
2412 :     this new facility while compiling for a fixpoint.
2413 :    
2414 :     2. I replaced all mentions of anchored paths in group owner specifications
2415 :     with simple relative paths (usually starting with "..").
2416 :     The rationale is that a library's internal workings should not be
2417 :     compromised by the lack of some anchor. (An anchor is necessary
2418 :     for someone who wants to refer to the library by an anchored path,
2419 :     but it should not be necessary to build the same library in the first
2420 :     place.)
2421 :    
2422 :     3. I changed the way CM's tool mechanism determines the shell command
2423 :     string used for things like ml-yacc etc. so that it does not break
2424 :     when CM.Control.implicit_anchors is turned off.
2425 :    
2426 :     ----------------------------------------------------------------------
2427 :     Name: Matthias Blume
2428 : blume 644 Date: 2000/05/12 18:20:00 JST
2429 :     Tag: blume-20000512-ml-build
2430 :     Description:
2431 :    
2432 :     Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
2433 :     getting installed properly (by config/install.sh).
2434 :    
2435 :     ----------------------------------------------------------------------
2436 :     Name: Matthias Blume
2437 : blume 643 Date: 2000/05/12 17:30:00 JST
2438 :     Tag: blume-20000512-anchors
2439 :     Description:
2440 :    
2441 :     !!! NEW BOOT FILES !!!
2442 :    
2443 :     This change is in preparation of fading out support for "implicitly
2444 :     anchored path names". I went through all sources and used the
2445 :     explicit (and relatively new) $-notation. See system/README and the
2446 :     CM manual for more info on this.
2447 :    
2448 :     I also modified the anchoring scheme for some things such as "smlnj",
2449 :     "MLRISC", "cm", etc. to take advantage of the fact that explicit
2450 :     anchors are more expressive: anchor name and first arc do not have to
2451 :     coincide. This entails the following user-visible change:
2452 :    
2453 :     You have to write $smlnj/foo/bar instead of smlnj/foo/bar. In
2454 :     particular, when you fire up sml with a command-line argument, say,
2455 :     e.g.:
2456 :    
2457 :     sml '$smlnj/cmb.cm'
2458 :    
2459 :     At the ML toplevel prompt:
2460 :    
2461 :     CM.autoload "$smlnj/cmb.cm";
2462 :    
2463 :     There is also a new controller in CM.Control that can be used to turn
2464 :     off all remaining support for implicit anchors by saying:
2465 :    
2466 :     CM.autoload "$smlnj/
2467 :     #set CM.Control.implicit_anchors false;
2468 :    
2469 :     This causes CM to reject implicitly anchored paths. This is (for the
2470 :     time being) less permissive than the "final" version where there will
2471 :     be no more such implicit anchors and relative paths will be just that:
2472 :     relative.
2473 :    
2474 :     The next step (version after next version?) will be to make the
2475 :     default for CM.Control.implicit_anchors false. After the dust has
2476 :     settled, I can then produce the "final" version of this...
2477 :    
2478 :     Note: Since bootstrapping is a bit tricky, I provided new boot files.
2479 :    
2480 :     ----------------------------------------------------------------------
2481 :     Name: Matthias Blume
2482 : blume 642 Date: 2000/05/11 16:30:00 JST
2483 :     Tag: blume-20000511-sources
2484 :     Description:
2485 :    
2486 :     The main change is that I added function CM.sources as a generalized
2487 :     version of the earlier CM.makedepend. This entails the following
2488 :     additional changes:
2489 :    
2490 :     - CM.makedepend has been dropped.
2491 :    
2492 :     - CM manual has been updated.
2493 :    
2494 :     - TOOLS signature and API have been changed.
2495 :    
2496 :     ----------------------------------------------------------------------
2497 : leunga 640 Name: Allen Leung
2498 : leunga 641 Date: 2000/05/10 21:17 EDT
2499 :     Tag: leunga-20000510-moby-c--ssa
2500 :     Description:
2501 :    
2502 :     Various bug fixes and new features for C--, Moby and MLRISC optimizations.
2503 :     None of these affect SML/NJ.
2504 :    
2505 :     1. Register Allocation
2506 :    
2507 :     a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
2508 :     This module tries to remove local (i.e. basic block level) redundancies
2509 :     during spilling.
2510 :    
2511 :     b. A new framework for performing region based register allocation.
2512 :     Not yet entirely functional.
2513 :    
2514 :     2. X86
2515 :    
2516 :     a. DefUse for POP was missing the stack pointer [found by Lal]
2517 :     b. Reload for CALL was incorrect in X86Spill [found by John]
2518 :     c. Various fixes in X86Spill so that it can be used correctly for
2519 :     the new spilling module.
2520 :    
2521 :     3. SSA/IR
2522 :    
2523 :     a. New module ir/dj-dataflow.sml implements elimination based
2524 :     data flow analysis.
2525 :    
2526 :     4. MLRiscGen
2527 :    
2528 :     a. Fix for gc type annotation
2529 :    
2530 :     5. MDGen
2531 :    
2532 :     Various fixes for machine description -> ml code translation. For ssa
2533 :     only.
2534 :    
2535 :     ----------------------------------------------------------------------
2536 :     Name: Allen Leung
2537 : leunga 640 Date: 2000/05/08 22:17 EDT
2538 :     Tag: leunga-20000508-labexp
2539 :     Description:
2540 :    
2541 :     Fermin has found a few assembly problems with constant expressions
2542 :     generated in LabelExp. Mostly, the problems involve extra parentheses,
2543 :     which choke on dumb assemblers. This is his fix.
2544 :    
2545 :     ----------------------------------------------------------------------
2546 : dbm 635 Name: Dave MacQueen
2547 :     Date: 2000/04/09 14:00 EDT
2548 :     Tag: dbm-20000502-Version_110_28
2549 :     Description:
2550 :    
2551 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
2552 :    
2553 :     2. Updated config/version to 110.28
2554 :    
2555 :     3. Updated config/srcarchiveurl
2556 :    
2557 :     3. New boot files!
2558 :     ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
2559 :    
2560 :     ----------------------------------------------------------------------
2561 : blume 634 Name: Matthias Blume
2562 :     Date: 2000/05/01 19:05:00 JST
2563 :     Tag: blume-20000501-noweb
2564 :     Description:
2565 :    
2566 :     A new noweb tool has been added. The existing system is entirely
2567 :     unaffected by this, but some CM users have asked for renewed noweb
2568 :     support. Everything is documented in the CM manual.
2569 :    
2570 :     New (plugin) libraries:
2571 :    
2572 :     noweb-tool.cm
2573 :     nw-ext.cm
2574 :    
2575 :     ----------------------------------------------------------------------
2576 : dbm 633 Name: Dave MacQueen
2577 :     Date: 2000/04/30 12:40PM EDT
2578 :     Tag: dbm-20000430-bug_fixes
2579 :     Description:
2580 :    
2581 :     1. Fix for bug 1498
2582 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sig
2583 :     smlnj/src/system/Basis/Implementation/Unsafe/object.sml
2584 :     added toRealArray function
2585 :     smlnj/src/compiler/MiscUtil/print/ppobj.sml
2586 :     added check for tag Obj.RealArray to array printing case in ppObj
2587 :    
2588 :     2. Fix for bug 1510
2589 :     smlnj/src/compiler/Semant/types/typesutil.sml
2590 :     fixed definition of dummyargs (used by equalTycon) so that
2591 :     dummy args are distinct types
2592 :    
2593 :     ----------------------------------------------------------------------
2594 : blume 629 Name: Matthias Blume
2595 : blume 632 Date: 2000/04/30 01:00:00 JST
2596 :     Tag: blume-20000430-versions
2597 :     Description:
2598 :    
2599 :     1. CM version numbering added. This is an implementation of Lal's
2600 :     proposal for adding version numbers and version checking to .cm
2601 :     files. Lal said that his proposal was just that -- a proposal.
2602 :     For the time being I went ahead and implemented it so that people
2603 :     can comment on it. Everything is completely backward-compatible
2604 :     (except for the stable library format, i.e., new bootfiles!).
2605 :    
2606 :     As usual, see the CM manual for details.
2607 :    
2608 :     2. An alternative syntax for anchored paths has been implemented.
2609 :     Dave has recently voiced the same concerns that I had when I did
2610 :     this, so there should be some support. My take is that eventually
2611 :     I will let support for the current syntax (where anchors are
2612 :     "implicit") fade out in favor of the new, explicit syntax.
2613 :     In order to be backward-compatible, both old and new syntax are
2614 :     currently supported.
2615 :    
2616 :     Again, see the CM manual for details.
2617 :    
2618 :     3. Parallel make is trying to be slightly smarter: When the master
2619 :     process finds a "bottleneck", i.e., when there is only one
2620 :     compilation unit that can be compiled and everybody else is
2621 :     waiting on it, then it will simply compile it directly instead
2622 :     of clumsily telling one of the slaves to do it.
2623 :    
2624 :     4. Support for "unsharing" added. This is necessary in order to be
2625 :     able to have two different versions of the same library running
2626 :     at the same time (e.g., for trying out a new MLRISC while still
2627 :     having the old MLRISC linked into the current compiler, etc.)
2628 :     See the CM manual.
2629 :    
2630 :     5. Simple "makedepend" functionality added for generating Makefile
2631 :     dependency information. (This is rather crude at the moment.
2632 :     Expect some changes here in the future.)
2633 :    
2634 :     6. ".fun" added as a recognized suffix for ML files. Also documented
2635 :     explicitly in the manual that the fallback behavior (unknown suffix
2636 :     -> ML file) is not an official feature!
2637 :    
2638 :     7. Small changes to the pickler for stable libraries.
2639 :    
2640 :     8. Several internal changes to CM (for cleanup/improvement).
2641 :    
2642 :    
2643 :     !!!! NEW BINFILES !!!!
2644 :    
2645 :     ----------------------------------------------------------------------
2646 :     Name: Matthias Blume
2647 : blume 631 Date: 2000/04/28 17:30:00 JST
2648 :     Tag: blume-20000428-pathconfig
2649 :     Description:
2650 :    
2651 :     1. I changed config/install.sh to remove duplicate entries from the
2652 :     lib/pathconfig file at the end. Moreover, the final version of
2653 :     lib/pathconfig is sorted alphabetically. The same (sorting) is done
2654 :     in src/system/installml.
2655 :    
2656 :     2. The config/install.sh script now consistently uses relative
2657 :     pathnames in lib/pathconfig whenever the anchor is in the lib
2658 :     directory. (So far this was true for the libraries that come
2659 :     pre-compiled and bundled as part of the bootfiles but not for
2660 :     libraries that are compiled by the script itself.)
2661 :    
2662 :     ----------------------------------------------------------------------
2663 :     Name: Matthias Blume
2664 : blume 629 Date: 2000/04/26 13:10:00 JST
2665 :     Tag: blume-20000426-fun_suffix
2666 :     Description:
2667 :    
2668 :     Added ".fun" as a recognized file name suffix (for ML code).
2669 :    
2670 :     ----------------------------------------------------------------------
2671 : leunga 628 Name: Allen Leung
2672 :     Date: 2000/04/25 17:00:00 EST
2673 :     Tag: leunga-20000425-alpha-ra
2674 :     Description:
2675 :    
2676 :     1. Alpha
2677 :    
2678 :     PSEUDOARITH was missing in AlphaRewrite. This causes an endless loop
2679 :     in C--.
2680 :    
2681 :     2. RA
2682 :    
2683 :     Added a flag "ra-dump-size" to print out the size of the flowgraph
2684 :     and the interference graph.
2685 :    
2686 :     ----------------------------------------------------------------------
2687 : dbm 627 Name: Dave MacQueen
2688 :     Date: 2000/04/25/
2689 :     Tag: dbm-20000425-mlyacc_doc_examples
2690 :     Description:
2691 :     Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
2692 :     Updated all three examples in src/ml-yacc/examples to run
2693 :     under 110.* using CM.make.
2694 :    
2695 :     ----------------------------------------------------------------------
2696 : leunga 624 Name: Allen Leung
2697 :     Date: 2000/04/20 23:04:00 EST
2698 :     Tag: leunga-20000420-ssa-c---stuff
2699 :     Description:
2700 :    
2701 :     This update synchronizes my repository with Yale's. Most of these
2702 :     changes, however, do not affect SML/NJ at all (the RA is an exception).
2703 :    
2704 :     1. Register Allocator
2705 :    
2706 :     a. An improvement in the interference graph construction:
2707 :     Given a copy
2708 :    
2709 :     s <- t
2710 :    
2711 : leunga 628 no interference edge between s and t is added for this definition of s.
2712 : leunga 624
2713 :     b. I've added two new spill heuristic modules that Fermin and I developed
2714 :     (in the new library RA.cm). These are unused in SML/NJ but maybe
2715 :     useful for others (Moby?)
2716 :    
2717 :     2. X86
2718 :    
2719 :     a. Various fixes in the backend provided by Fermin [C--] and Lal.
2720 :    
2721 :     3. Alpha
2722 :    
2723 :     a. Added the BSR instruction and code generation that goes with it [C--]
2724 :     b. Other fixes too numerous to recount provided by Fermin [C--]
2725 :    
2726 :     4. Regmaps
2727 :    
2728 :     a. The regmaps are not initialized with the identity physical bindings
2729 :     at creation time. This is unneeded.
2730 :    
2731 :     5. MLRISC Optimizations
2732 :    
2733 :     a. The DJ-Graph module can now compute the iterated dominance frontiers
2734 :     intersects with liveness incrementally in linear time! Woohoo!
2735 :     This is now used in my new SSA construction algorithm.
2736 :    
2737 :     b. THe branch reorganization module is now smarter about linear chains of
2738 :     basic blocks.
2739 :    
2740 :    
2741 :     ----------------------------------------------------------------------
2742 : blume 615 Name: Matthias Blume
2743 :     Date: 2000/04/12 13:52:00 JST
2744 :     Tag: blume_main_v110p27_1
2745 :     Description:
2746 :    
2747 :     Changed install.sh script to handle archive files without version number
2748 :     and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
2749 :     name of the boot file archive.
2750 :    
2751 :     ----------------------------------------------------------------------
2752 : dbm 607 Name: Dave MacQueen
2753 :     Date: 2000/04/09 14:00 EDT
2754 :     Tag: dbm-20000410-Version_110_27
2755 :     Description:
2756 :    
2757 :     1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
2758 :    
2759 :     2. Updated src/config/version to 110.27
2760 :    
2761 :     3. New boot files!
2762 :    
2763 :     ----------------------------------------------------------------------
2764 : leunga 606 Name: Allen Leung
2765 :     Date: 2000/04/09 19:09:00 EST
2766 :     Tag: leunga-20000409-misc
2767 :     Description:
2768 :    
2769 :     1. Yet another fix for x86 assembly for idivl, imull, mull and friends.
2770 :    
2771 :     2. Miscellaneous improvements to MLRISC (unused in sml/nj)
2772 :    
2773 :     ----------------------------------------------------------------------
2774 : monnier 605 Name: Stefan
2775 :     Date: 2000/04/07 10:00:00 EDT
2776 :     Tag: monnier-20000406-branch-handling
2777 :     Description:
2778 :    
2779 :     Improved handling of branches (mostly those generated from
2780 :     polymorphic equality), removed switchoff and changed the
2781 :     default optimization settings (more cpsopt and less flintopt).
2782 :    
2783 :     ----------------------------------------------------------------------
2784 : leunga 601 Name: Allen Leung
2785 : leunga 602 Date: 2000/04/06 01:30:00 EST
2786 :     Tag: leunga-20000406-peephole-x86-SSA-2
2787 :     Description:
2788 :    
2789 :     Forgot a few files.
2790 :    
2791 :     ----------------------------------------------------------------------
2792 :     Name: Allen Leung
2793 : leunga 601 Date: 2000/04/06 00:36:00 EST
2794 :     Tag: leunga-20000406-peephole-x86-SSA
2795 :     Description:
2796 :    
2797 :     1. New Peephole code
2798 :    
2799 :     2. Minor improvement to X86 instruction selection
2800 :    
2801 :     3. Various fixes to SSA and machine description -> code translator
2802 :    
2803 :     ----------------------------------------------------------------------
2804 : blume 595 Name: Matthias Blume
2805 :     Date: 2000/04/05 12:30:00 JST
2806 :     Tag: blume_main_v110p26p2_3
2807 :     Description:
2808 :    
2809 :     This update just merges three minor cosmetic updates to CM's sources
2810 :     to get ready for the 110.27 code freeze on Friday. No functionality
2811 :     has changed.
2812 :    
2813 :     ----------------------------------------------------------------------
2814 : leunga 593 Name: Allen Leung
2815 : leunga 594 Date: 2000/04/04 19:39:00 EST
2816 :     Tag: leunga-20000404-x86-asm
2817 :     Description:
2818 :    
2819 :     1. Fixed a problem in X86 assembly.
2820 :    
2821 :     Things like
2822 :    
2823 :     jmp %eax
2824 :     jmp (%eax)
2825 :    
2826 :     should be output as
2827 :    
2828 :     jmp *%eax
2829 :     jmp *(%eax)
2830 :    
2831 :     2. Assembly output
2832 :    
2833 :     Added a new flag
2834 :    
2835 :     "asm-indent-copies" (default to false)
2836 :    
2837 :     When this flag is on, parallel copies will be indented an extra level.
2838 :    
2839 :     ----------------------------------------------------------------------
2840 :     Name: Allen Leung
2841 : leunga 593 Date: 2000/04/04 03:18:00 EST
2842 :     Tag: leunga-20000404-C--Moby
2843 :     Description:
2844 :    
2845 :     All of these fixes are related to C--, Moby, and my own optimization
2846 :     stuff; so they shouldn't affect SML/NJ.
2847 :    
2848 :     1. X86
2849 :    
2850 :     Various fixes related floating point, and extensions.
2851 :    
2852 :     2. Alpha
2853 :    
2854 :     Some extra patterns related to loads with signed/zero extension
2855 :     provided by Fermin.
2856 :    
2857 :     3. Assembly
2858 :    
2859 : monnier 659 When generating assembly, resolve the value of client defined constants,
2860 : leunga 593 instead of generating symbolic values. This is controlled by the
2861 :     new flag "asm-resolve-constants", which is default to true.
2862 :    
2863 :     4. Machine Descriptions
2864 :    
2865 :     a. The precedence parser was slightly broken when parsing infixr symbols.
2866 :     b. The type generalizing code had the bound variables reversed, resulting
2867 :     in a problem during arity raising.
2868 :     c. Various fixes in machine descriptions.
2869 :    
2870 :     ----------------------------------------------------------------------
2871 : blume 592 Name: Matthias Blume
2872 :     Date: 2000/04/03 16:05:00 JST
2873 :     Tag: blume_main_v110p26p2_2
2874 :     Description:
2875 :    
2876 :     I eliminated coreEnv from compInfo. Access to the "Core" structure is
2877 :     now done via the ordinary static environment that is context to each
2878 :     compilation unit.
2879 :    
2880 :     To this end, I arranged that instead of "structure Core" as "structure
2881 :     _Core" is bound in the pervasive environment. Core access is done via
2882 : monnier 659 _Core (which can never be accidentally rebound because _Core is not a
2883 : blume 592 legal surface-syntax symbol).
2884 :    
2885 :     The current solution is much cleaner because the core environment is
2886 :     now simply part of the pervasive environment which is part of every
2887 :     compilation unit's context anyway. In particular, this eliminates all
2888 :     special-case handling that was necessary until now in order to deal
2889 :     with dynamic and symbolic parts of the core environment.
2890 :    
2891 :     Remaining hackery (to bind the "magic" symbol _Core) is localized in the
2892 : monnier 659 compilation manager's bootstrap compiler (actually: in the "init group"
2893 : blume 592 handling). See the comments in src/system/smlnj/init/init.cmi for
2894 :     more details.
2895 :    
2896 :     I also tried to track down all mentions of "Core" (as string argument
2897 :     to Symbol.strSymbol) in the compiler and replaced them with a
2898 :     reference to the new CoreSym.coreSym. Seems cleaner since the actual
2899 :     name appears in one place only.
2900 :    
2901 :     Binfile and bootfile format have not changed, but the switchover from
2902 :     the old "init.cmi" to the new one is a bit tricky, so I supplied new
2903 :     bootfiles anyway.
2904 :    
2905 :     ----------------------------------------------------------------------
2906 : leunga 591 Name: Allen Leung
2907 :     Date: 2000/04/02 21:17:00 EST
2908 :     Tag: leunga-20000402-mltree
2909 :     Description:
2910 : leunga 585
2911 : leunga 591 1. Renamed the constructor CALL in MLTREE by popular demand.
2912 :     2. Added a bunch of files from my repository. These are currently
2913 :     used by other non-SMLNJ backends.
2914 :    
2915 : leunga 576 ----------------------------------------------------------------------
2916 : leunga 590 Name: Allen Leung
2917 :     Date: 2000/03/31 21:15:00 EST
2918 :     Tag: leunga-20000331-aliasing
2919 :     Description:
2920 :    
2921 :     This update contains a rewritten (and hopefully more correct) module
2922 :     for extracting aliasing information from CPS.
2923 :    
2924 :     To turn on this feature:
2925 :    
2926 :     Compiler.Control.CG.memDisambiguate := true
2927 :    
2928 :     To pretty print the region information with assembly
2929 :    
2930 :     Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
2931 :    
2932 :     To control how many levels of aliasing information are printed, use:
2933 :    
2934 :     Compiler.Control.MLRISC.getInt "points-to-show-level" := n
2935 :    
2936 :     The default of n is 3.
2937 :    
2938 :     ----------------------------------------------------------------------
2939 : dbm 589 Name: David MacQueen
2940 :     Date: 2000/03/31 11:15:00 EST
2941 :     Tag: dbm-20000331-runtime_fix
2942 :     Description:
2943 :    
2944 :     This update contains:
2945 :    
2946 :     1. runtime/c-lib/c-libraries.c
2947 :     includes added in revision 1.2 caused compilation errors on hppa-hpux
2948 :    
2949 :     2. fix for bug 1556
2950 :     system/Basis/Implementation/NJ/internal-signals.sml
2951 :    
2952 :     ----------------------------------------------------------------------
2953 : blume 587 Name: Matthias Blume
2954 : blume 588 Date: 2000/03/31 18:00:00 JST
2955 :     Tag: blume_main_v110p26p2_1
2956 :     Description:
2957 :    
2958 :     This update contains:
2959 :    
2960 :     1. A small change to CM's handling of stable libraries:
2961 :     CM now maintains one "global" modmap that is used for all stable
2962 :     libraries. The use of such a global modmap maximizes sharing and
2963 :     minimizes the need for re-traversing parts of environments during
2964 :     modmap construction. (However, this has minor impact since modmap
2965 :     construction seems to account for just one percent or less of total
2966 :     compile time.)
2967 :    
2968 :     2. I added a "genmap" phase to the statistics. This is where I got the
2969 :     "one percent" number (see above).
2970 :    
2971 :     3. CM's new tool parameter mechanism just became _even_ better. :)
2972 :     - The parser understands named parameters and recursive options.
2973 :     - The "make" and "shell" tools use these new features.
2974 :     (This makes it a lot easier to cascade these tools.)
2975 :     - There is a small syntax change: named parameters use a
2976 :    
2977 :     <name> : ( <option> ... ) or
2978 :     <name> : <string>
2979 :    
2980 :     syntax. Previously, named parameters were implemented in an
2981 :     ad-hoc fashion by each tool individually (by parsing strings)
2982 :     and had the form
2983 :    
2984 :     <name>=<string>
2985 :    
2986 :     See the CM manual for a full description of these issues.
2987 :    
2988 :     ----------------------------------------------------------------------
2989 :     Name: Matthias Blume
2990 : blume 587 Date: 2000/03/30 18:00:00 JST
2991 :     Tag: blume_main_v110p26p2_0
2992 :     Description:
2993 :    
2994 :     !!!!! WARNING !!!!!!
2995 :     !! New binfiles !!
2996 :     !!!!!!!!!!!!!!!!!!!!
2997 :    
2998 :     This update contains:
2999 :    
3000 :     1. Moderate changes to CM:
3001 :    
3002 :     - Changes to CM's tools mechanism. In particular, it is now possible
3003 :     to have tools that accept additional "command line" parameters
3004 :     (specified in the .cm file at each instance where the tool's class is
3005 :     used).
3006 :    
3007 : monnier 659 This was done to accommodate the new "make" and "shell" tools which
3008 :     facilitate fairly seamless hookup to portions of code managed using
3009 : blume 587 Makefiles or Shell scripts.
3010 :    
3011 :     There are no classes "shared" or "private" anymore. Instead, the
3012 :     sharing annotation is now a parameter to the "sml" class.
3013 :    
3014 :     There is a bit of generic machinery for implementing one's own
3015 :     tools that accept command-line parameters. However, I am not yet fully
3016 :     satisfied with that part, so expect changes here in the future.
3017 :    
3018 :     All existing tools are described in the CM manual.
3019 :    
3020 : monnier 659 - Slightly better error handling. (CM now suppresses many followup
3021 : blume 587 error messages that tended to be more annoying than helpful.)
3022 :    
3023 :     2. Major changes to the compiler's static environment data structures.
3024 :    
3025 :     - no CMStaticEnv anymore.
3026 :     - no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
3027 :     but it is called Environment), no conversions between different
3028 :     kinds of static environments
3029 :    
3030 :     - There is still a notion of a "modmap", but such modmaps are generated
3031 :     on demand at the time when they are needed. This sounds slow, but I
3032 :     sped up the code that generates modmaps enough for this not to lead to
3033 :     a slowdown of the compiler (at least I didn't detect any).
3034 :    
3035 :     - To facilitate rapid modmap generation, static environments now
3036 :     contain an (optional) "modtree" structure. Modtree annotations are
3037 :     constructed by the unpickler during unpickling. (This means that
3038 :     the elaborator does not have to worry about modtrees at all.)
3039 :     Modtrees have the advantage that they are compositional in the same
3040 :     way as the environment data structure itself is compositional.
3041 :     As a result, modtrees never hang on to parts of an environment that
3042 :     has already been rendered "stale" by filtering or rebinding.
3043 :    
3044 :     - I went through many, many trials and errors before arriving at the
3045 :     current solution. (The initial idea of "linkpaths" did not work.)
3046 :     But the result of all this is that I have touched a lot of files that
3047 :     depend on the "modules" and "types" data structures (most of the
3048 :     elaborator). There were a lot of changes during my "linkpath" trials
3049 :     that could have been reverted to their original state but weren't.
3050 :     Please, don't be too harsh on me for messing with this code a bit more
3051 : monnier 921 than what was strictly necessary... (I _did_ resist the temptation
3052 : blume 587 of doing any "global reformatting" to avoid an untimely death at
3053 :     Dave's hands. :)
3054 :    
3055 :     - One positive aspect of the previous point: At least I made sure that
3056 :     all files that I touched now compile without warnings (other than
3057 :     "polyEqual").
3058 :    
3059 :     - compiler now tends to run "leaner" (i.e., ties up less memory in
3060 :     redundant modmaps)
3061 :    
3062 :     ----------------------------------------------------------------------
3063 : leunga 580 Name: Allen Leung
3064 : leunga 585 Date: 2000/03/29 18:00:00
3065 :     Tag: leunga-20000327-mlriscGen_hppa_alpha_x86
3066 : leunga 586 Boot files (optional): ftp://react-ilp.cs.nyu.edu/leunga/110.26.1-sml.boot.x86-unix-20000330.tar.gz
3067 : leunga 585 Description:
3068 :    
3069 :     This update contains *MAJOR* changes to the way code is generated from CPS
3070 :     in the module mlriscGen, and in various backend modules.
3071 :    
3072 :     CHANGES
3073 :     =======
3074 :    
3075 :     1. MLRiscGen: forward propagation fix.
3076 :    
3077 :     There was a bug in forward propagation introduced at about the same time
3078 :     as the MLRISC x86 backend, which prohibits coalescing to be
3079 :     performed effectively in loops.
3080 :    
3081 :     Effect: speed up of loops in RISC architectures.
3082 :     By itself, this actually slowed down certain benchmarks on the x86.
3083 :    
3084 :     2. MLRiscGen: forward propagating addresses from consing.
3085 :    
3086 :     I've changed the way consing code is generated. Basically I separated
3087 :     out the initialization part:
3088 :    
3089 :     store tag, offset(allocptr)
3090 :     store elem1, offset+4(allocptr)
3091 :     store elem2, offset+8(allocptr)
3092 :     ...
3093 :     store elemn, offset+4n(allocptr)
3094 :    
3095 :     and the address computation part:
3096 :    
3097 :     celladdr <- offset+4+alloctpr
3098 :    
3099 :     and move the address computation part
3100 :    
3101 :     Effect: register pressure is generally lower as a result. This
3102 :     makes compilation of certain expressions much faster, such as
3103 :     long lists with non-trivial elements.
3104 :    
3105 :     [(0,0), (0,0), .... (0,0)]
3106 :    
3107 :     3. MLRiscGen: base pointer elimination.
3108 :    
3109 :     As part of the linkage mechanism, we generate the sequence:
3110 :    
3111 :     L: ... <- start of the code fragment
3112 :    
3113 :     L1:
3114 :     base pointer <- linkreg - L1 + L
3115 :    
3116 :     The base pointer was then used for computing relocatable addresses
3117 :     in the code fragment. Frequently (such as in lots of continuations)
3118 :     this is not needed. We now eliminate this sequence whenever possible.
3119 :    
3120 :     For compile time efficiency, I'm using a very stupid local heuristic.
3121 :     But in general, this should be done as a control flow analysis.
3122 :    
3123 :     Effect: Smaller code size. Speed up of most programs.
3124 :    
3125 :     4. Hppa back end
3126 :    
3127 :     Long jumps in span dependence resolution used to depend on the existence
3128 :     of the base pointer.
3129 :    
3130 :     A jump to a long label L was expanded into the following sequence:
3131 :    
3132 :     LDIL %hi(L-8192), %r29
3133 :     LDO %lo(L-8192)(%r29), %r29
3134 :     ADD %r29, baseptr, %r29
3135 :     BV,n %r0(%r29)
3136 :    
3137 :     In the presence of change (3) above, this will not work. I've changed
3138 :     it so that the following sequence of instructions are generated, which
3139 :     doesn't mention the base pointer at all:
3140 :    
3141 :     BL,n L', %r29 /* branch and link, L' + 4 -> %r29 */
3142 :     L': ADDIL L-(L'+4), %r29 /* Compute address of L */
3143 :     BV,n %r0(%r29) /* Jump */
3144 :    
3145 :     5. Alpha back end
3146 :    
3147 :     New alpha instructions LDB/LDW have been added, as per Fermin's
3148 :     suggestions. This is unrelated to all other changes.
3149 :    
3150 :     6. X86 back end
3151 :    
3152 :     I've changed andl to testl in the floating point test sequence
3153 :     whenever appropriate. The Intel optimization guide states that
3154 : monnier 659 testl is preferable to andl.
3155 : leunga 585
3156 :     7. RA (x86 only)
3157 :    
3158 :     I've improved the spill propagation algorithm, using an approximation
3159 :     of maximal weighted independent sets. This seems to be necessary to
3160 :     alleviate the negative effect in light of the slow down in (1).
3161 :    
3162 :     I'll write down the algorithm one of these days.
3163 :    
3164 :     8. MLRiscGen: frequencies
3165 :    
3166 :     I've added an annotation that states that all call gc blocks have zero
3167 :     execution frequencies. This improves register allocation on the x86.
3168 :    
3169 :     BENCHMARKS
3170 :     ==========
3171 :    
3172 :     I've only perform the comparison on 110.25.
3173 :    
3174 :     The platforms are:
3175 :    
3176 :     HPPA A four processor HP machine (E9000) with 5G of memory.
3177 :     X86 A 300Hhz Pentium II with 128M of memory, and
3178 :     SPARC An Ultra sparc 2 with 512M of memory.
3179 :    
3180 :     I used the following parameters for the SML benchmarks:
3181 :    
3182 :     @SMLalloc
3183 :     HPPA 256k
3184 :     SPARC 512k
3185 :     X86 256k
3186 :    
3187 :     COMPILATION TIME
3188 :     ----------------
3189 :     Here are the numbers comparing the compilation times of the compilers.
3190 :     I've only compared 110.25 compiling the new sources versus
3191 :     a fixpoint version of the new compiler compiling the same.
3192 :    
3193 :     110.25 New
3194 :     Total Time in RA Spill+Reload Total Time In RA Spill+Reload
3195 :     HPPA 627s 116s 2684+3584 599s 95s 1003+1879
3196 :     SPARC 892s 173s 2891+3870 708s 116s 1004+1880
3197 :     X86 999s 315s 94006+130691 987s 296s 108877+141957
3198 :    
3199 :     110.25 New
3200 :     Code Size Code Size
3201 :     HPPA 8596736 8561421
3202 :     SPARC 8974299 8785143
3203 :     X86 9029180 8716783
3204 :    
3205 :     So in summary, things are at least as good as before. Dramatic
3206 :     reduction in compilation is obtained on the Sparc; I can't explain it,
3207 :     but it is reproducible. Perhaps someone should try to reproduce this
3208 :     on their own machines.
3209 :    
3210 :     SML BENCHMARKS
3211 :     --------------
3212 :    
3213 :     On the average, all benchmarks perform at least as well as before.
3214 :    
3215 :     HPPA Compilation Time Spill+Reload Run Time
3216 :     110.25 New 110.25 New 110.25 New
3217 :    
3218 :     barnesHut 3.158 3.015 4.75% 1+1 0+0 2.980 2.922 2.00%
3219 :     boyer 6.152 5.708 7.77% 0+0 0+0 0.218 0.213 2.34%
3220 :     count-graphs 1.168 1.120 4.32% 0+0 0+0 22.705 23.073 -1.60%
3221 :     fft 0.877 0.792 10.74% 1+3 1+3 0.602 0.587 2.56%
3222 :     knuthBendix 3.180 2.857 11.32% 0+0 0+0 0.675 0.662 2.02%
3223 :     lexgen 6.190 5.290 17.01% 0+0 0+0 0.913 0.788 15.86%
3224 :     life 0.803 0.703 14.22% 25+25 0+0 0.153 0.140 9.52%
3225 :     logic 2.048 2.007 2.08% 6+6 1+1 4.133 4.008 3.12%
3226 :     mandelbrot 0.077 0.080 -4.17% 0+0 0+0 0.765 0.712 7.49%
3227 :     mlyacc 22.932 20.937 9.53% 154+181 32+57 0.468 0.430 8.91%
3228 :     nucleic 5.183 5.060 2.44% 2+2 0+0 0.125 0.120 4.17%
3229 :     ratio-regions 3.357 3.142 6.84% 0+0 0+0 116.225 113.173 2.70%
3230 :     ray 1.283 1.290 -0.52% 0+0 0+0 2.887 2.855 1.11%
3231 :     simple 6.307 6.032 4.56% 28+30 5+7 3.705 3.658 1.28%
3232 :     tsp 0.888 0.862 3.09% 0+0 0+0 7.040 6.893 2.13%
3233 :     vliw 24.378 23.455 3.94% 106+127 25+45 2.758 2.707 1.91%
3234 :     --------------------------------------------------------------------------
3235 :     Average 6.12% 4.09%
3236 :    
3237 :     SPARC Compilation Time Spill+Reload Run Time
3238 :     110.25 New 110.25 New 110.25 New
3239 :    
3240 :     barnesHut 3.778 3.592 5.20% 2+2 0+0 3.648 3.453 5.65%
3241 :     boyer 6.632 6.110 8.54% 0+0 0+0 0.258 0.242 6.90%
3242 :     count-graphs 1.435 1.325 8.30% 0+0 0+0 33.672 34.737 -3.07%
3243 :     fft 0.980 0.940 4.26% 3+9 2+6 0.838 0.827 1.41%
3244 :     knuthBendix 3.590 3.138 14.39% 0+0 0+0 0.962 0.967 -0.52%
3245 :     lexgen 6.593 6.072 8.59% 1+1 0+0 1.077 1.078 -0.15%
3246 :     life 0.972 0.868 11.90% 26+26 0+0 0.143 0.140 2.38%
3247 :     logic 2.525 2.387 5.80% 7+7 1+1 5.625 5.158 9.05%
3248 :     mandelbrot 0.090 0.093 -3.57% 0+0 0+0 0.855 0.728 17.39%
3249 :     mlyacc 26.732 23.827 12.19% 162+189 32+57 0.550 0.560 -1.79%
3250 :     nucleic 6.233 6.197 0.59% 3+3 0+0 0.163 0.173 -5.77%
3251 :     ratio-regions 3.780 3.507 7.79% 0+0 0+0 133.993 131.035 2.26%
3252 :     ray 1.595 1.550 2.90% 1+1 0+0 3.440 3.418 0.63%
3253 :     simple 6.972 6.487 7.48% 29+32 5+7 3.523 3.525 -0.05%
3254 :     tsp 1.115 1.063 4.86% 0+0 0+0 7.393 7.265 1.77%
3255 :     vliw 27.765 24.818 11.87% 110+135 25+45 2.265 2.135 6.09%
3256 :     ----------------------------------------------------------------------------
3257 :     Average 6.94% 2.64%
3258 :    
3259 :     X86 Compilation Time Spill+Reload Run Time
3260 :     110.25 New 110.25 New 110.25 New
3261 :    
3262 :     barnesHut 5.530 5.420 2.03% 593+893 597+915 3.532 3.440 2.66%
3263 :     boyer 8.768 7.747 13.19% 493+199 301+289 0.327 0.297 10.11%
3264 :     count-graphs 2.040 2.010 1.49% 298+394 315+457 26.578 28.660 -7.26%
3265 :     fft 1.327 1.302 1.92% 112+209 115+210 1.055 0.962 9.71%
3266 :     knuthBendix 5.218 5.475 -4.69% 451+598 510+650 0.928 0.932 -0.36%
3267 :     lexgen 9.970 9.623 3.60% 1014+841 1157+885 0.947 0.928 1.97%
3268 :     life 1.183 1.183 0.00% 162+182 145+148 0.127 0.103 22.58%
3269 :     logic 3.285 3.512 -6.45% 514+684 591+836 5.682 5.577 1.88%
3270 :     mandelbrot 0.147 0.143 2.33% 38+41 33+54 0.703 0.690 1.93%
3271 :     mlyacc 35.457 32.763 8.22% 3496+4564 3611+4860 0.552 0.550 0.30%
3272 :     nucleic 7.100 6.888 3.07% 239+168 201+158 0.175 0.173 0.96%
3273 :     ratio-regions 6.388 6.843 -6.65% 1182+257 981+300 120.142 120.345 -0.17%
3274 :     ray 2.332 2.338 -0.29% 346+398 402+494 3.593 3.540 1.51%
3275 :     simple 9.912 9.903 0.08% 1475+941 1579+1168 3.057 3.178 -3.83%
3276 :     tsp 1.623 1.532 5.98% 266+200 250+211 8.045 7.878 2.12%
3277 :     vliw 33.947 35.470 -4.29% 2629+2774 2877+3171 2.072 1.890 9.61%
3278 :     ----------------------------------------------------------------------------
3279 :     Average 1.22% 3.36%
3280 :    
3281 :     ----------------------------------------------------------------------
3282 :     Name: Allen Leung
3283 : leunga 583 Date: 2000/03/23 16:25:00
3284 :     Tag: leunga-20000323-fix_x86_alpha
3285 :     Description:
3286 :    
3287 :     1. X86 fixes/changes
3288 :    
3289 :     a. The old code generated for SETcc was completely wrong.
3290 :     The Intel optimization guide is VERY misleading.
3291 :    
3292 :     2. ALPHA fixes/changes
3293 :    
3294 :     a. Added the instructions LDBU, LDWU, STB, STW as per Fermin's suggestion.
3295 :     b. Added a new mode byteWordLoadStores to the functor parameter to Alpha()
3296 :     c. Added reassociation code for address computation.
3297 :    
3298 :     ----------------------------------------------------------------------
3299 :     Name: Allen Leung
3300 : leunga 580 Date: 2000/03/22 01:23:00
3301 :     Tag: leunga-20000322-fix_x86_hppa_ra
3302 :     Description:
3303 :    
3304 :     1. X86 fixes/changes
3305 :    
3306 :     a. x86Rewrite bug with MUL3 (found by Lal)
3307 :     b. Added the instructions FSTS, FSTL
3308 :    
3309 :     2. PA-RISC fixes/changes
3310 :    
3311 :     a. B label should not be a delay slot candidate! Why did this work?
3312 :     b. ADDT(32, REG(32, r), LI n) now generates one instruction instead of two,
3313 :     as it should be.
3314 :     c. The assembly syntax for fstds and fstdd was wrong.
3315 :     d. Added the composite instruction COMICLR/LDO, which is the immediate
3316 :     operand variant of COMCLR/LDO.
3317 :    
3318 :     3. Generic MLRISC
3319 :    
3320 :     a. shuffle.sml rewritten to be slightly more efficient
3321 :     b. DIV bug in mltree-simplify fixed (found by Fermin)
3322 :    
3323 :     4. Register Allocator
3324 :    
3325 :     a. I now release the interference graph earlier during spilling.
3326 :     May improve memory usage.
3327 :    
3328 :     ----------------------------------------------------------------------
3329 : blume 577 Name: Matthias Blume
3330 : blume 578 Date: 2000/03/14 14:15:32
3331 :     Tag: blume_main_v110p26p1_2
3332 :     Description:
3333 :    
3334 :     1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
3335 :     additional argument called "template" which is an optional string that
3336 : monnier 659 specifies the layout of the tool command line. See the CM manual for
3337 : blume 578 explanation.
3338 :    
3339 : monnier 659 2. A special-purpose tool can be "registered" by simply dropping the
3340 : blume 578 corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
3341 :     directory where the .cm file lives that uses this tool. (The
3342 :     behavior/misfeature until now was to look for the tool description
3343 :     files in the current working directory.) As before, tool description
3344 :     files could also be anchored -- in which case they can live anywhere
3345 :     they like. Following the recent e-mail discussion, this change should
3346 :     make it easier to have special-purpose tools that are shipped together
3347 :     with the sources of the program that uses them.
3348 :    
3349 :     ----------------------------------------------------------------------
3350 :     Name: Matthias Blume
3351 : blume 577 Date: 2000/03/10 07:48:34
3352 :     Tag: blume_main_v110p26p1_1
3353 :     Description:
3354 :    
3355 :     I added a re-written version of Dave's fixpt script to src/system.
3356 :     Changes relative to the original version:
3357 :     - sh-ified (not everybody has ksh)
3358 :     - automatically figures out which architecture it runs on
3359 :     - uses ./makeml a bit more cleverly
3360 :     - never invokes ./installml (and, thus, does not clobber your
3361 :     good and working installation of sml in case something goes wrong)
3362 :     - accepts max iteration count using option "-iter <n>"
3363 :     - accepts a "base" name using option "-base <base>"
3364 :    
3365 :     It does not build any extraneous heap images but directly rebuilds
3366 :     bin- and boot-hierarchies using makeml's "-rebuild" switch. Finally,
3367 :     it can incorporate existing bin- and boot- hierarchies. For example,
3368 :     suppose the base is set to "sml" (which is the default). Then it
3369 :     successively builds
3370 :    
3371 :     sml.bin.<arch>-unix and sml.boot.<arch>-unix
3372 :     then sml1.bin.<arch>-unix and sml1.boot.<arch>-unix
3373 :     then sml2.bin.<arch>-unix and sml2.boot.<arch>-unix
3374 :     ...
3375 :     then sml<n>.bin.<arch>-unix and sml<n>.boot.<arch>-unix
3376 :    
3377 :     and so on. If any of these already exist, it will just use what's
3378 :     there. In particular, many people will have the initial set of bin
3379 :     and boot files around, so this saves time for at least one full
3380 :     rebuild. Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
3381 :     <k>=1,2,... is normally not a good idea when invoking fixpt. However,
3382 :     they might be the result of an earlier partial run of fixpt (which
3383 : monnier 659 perhaps got accidentally killed). In this case, fixpt will quickly
3384 : blume 577 move through what exists before continuing where it left off earlier,
3385 :     and, thus, saves a lot of time.
3386 :    
3387 :     ----------------------------------------------------------------------
3388 : leunga 576 Name: Allen Leung
3389 :     Date: 00/03/10 02:20:00
3390 :     Tag: leunga-20000310-fix_x86_asm_ra
3391 :     Description:
3392 : dbm 570
3393 : leunga 576 More assembly output problems involving the indexed addressing mode
3394 :     on the x86 have been found and corrected. Thanks to Fermin Reig for the
3395 :     fix.
3396 :    
3397 :     The interface and implementation of the register allocator have been changed
3398 :     slightly to accommodate the possibility to skip the register allocation
3399 :     phases completely and go directly to memory allocation. This is needed
3400 :     for C-- use.
3401 :    
3402 : dbm 570 ----------------------------------------------------------------------
3403 : blume 572 Name: Matthias Blume
3404 : blume 575 Date: 00/03/09 10:23:53
3405 :     Tag: blume_main_v110p26p1_0
3406 :     Description:
3407 :    
3408 :     * Complete re-organization of library names. Many libraries have been
3409 :     consolidated so that they share the same path anchor. For example,
3410 :     all MLRISC-related libraries are anchored at MLRISC, most libraries that
3411 :     are SML/NJ-specific are under "smlnj". Notice that names like
3412 :     host-cmb.cm or host-compiler.cm no longer exist. See system/README
3413 :     for a complete description of the new naming scheme. Quick reference:
3414 :    
3415 :     host-cmb.cm -> smlnj/cmb.cm
3416 :     host-compiler.cm -> smlnj/compiler.cm
3417 :     full-cm.cm -> smlnj/cm.cm
3418 :     <arch>-<os>.cm -> smlnj/cmb/<arch>-<os>.cm
3419 :     <arch>-compiler.cm -> smlnj/compiler/<arch>.cm
3420 :    
3421 :     * Bug fixes in CM.
3422 :     - exceptions in user code are being passed through (i.e., reach top level)
3423 :     - more bugs in paranoia mode fixed
3424 :     - bug related to checking group owners fixed
3425 :    
3426 :     * New install.sh script that automagically fetches archive files:
3427 :     The new file config/srcarchiveurl must contain the URL of the
3428 :     (remote) directory that contains bin files (or other source archives).
3429 :     If install.sh does not find the archive locally, it tries to get
3430 :     it from that remote directory.
3431 :     This should simplify installation further: For machines that have
3432 :     access to the internet, just fetch <version>-config.tgz, unpack it,
3433 : monnier 659 edit config/targets, and go (run config/install.sh). The script will
3434 : blume 575 fetch everything else that it might need all by itself.
3435 :    
3436 :     For CVS users, this mechanism is not relevant for source archives, but
3437 :     it is convenient for getting new sets of binfiles.
3438 :    
3439 :     Archives should be tar files compressed with either gzip, compress, or
3440 :     bzip2. The script recognizes .tgz, .tar, tar.gz, tz, .tar.Z, and .tar.bz2.
3441 :    
3442 :     ----------------------------------------------------------------------
3443 :     Name: Matthias Blume
3444 : blume 572 Date: 2000/03/07 04:01:04
3445 :     Tag: blume_main_v110_26_2
3446 : dbm 570 Description:
3447 : blume 572 - size info in BOOTLIST
3448 :     * no fixed upper limits for number of bootfiles or length of
3449 :     bootfile names in runtime
3450 :     * falling back to old behavior if no BOOTLIST size info found
3451 :     - allocation size heuristics in .run-sml
3452 :     * tries to read cache size from /proc/cpuinfo (this is important for
3453 :     small-cache Celeron systems!)
3454 :     - install.sh robustified
3455 :     - CM manual updates
3456 :     - paranoid mode
3457 :     * no more CMB.deliver() (i.e., all done by CMB.make())
3458 :     * can re-use existing sml.boot.* files
3459 :     * init.cmi now treated as library
3460 :     * library stamps for consistency checks
3461 :     - sml.boot.<arch>-<os>/PIDMAP file
3462 :     * This file is read by the CM startup code. This is used to minimize
3463 :     the amount of dynamic state that needs to be stowed away for the
3464 :     purpose of sharing between interactive system and user code.
3465 :     - CM.Anchor.anchor instead of CM.Anchor.{set,cancel}
3466 :     * Upon request by Elsa. Anchors now controlled by get-set-pair
3467 :     like most other CM state variables.
3468 :     - Compiler.CMSA eliminated
3469 :     * No longer supported by CM anyway.
3470 :     - fixed bugs in pickler that kept biting Stefan
3471 :     * past refs to past refs (was caused by the possibility that
3472 :     ad-hoc sharing is more discriminating than hash-cons sharing)
3473 :     * integer overflow on LargeInt.minInt
3474 :     - ml-{lex,yacc} build scripts now use new mechanism
3475 :     for building standalone programs
3476 :     - fixed several gcc -Wall warnings that were caused by missing header
3477 :     files, missing initializations, etc., in runtime (not all warnings
3478 :     eliminated, though)

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