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Diff of /sml/trunk/HISTORY

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revision 710, Tue Oct 17 08:21:09 2000 UTC revision 854, Wed Jun 27 19:11:38 2001 UTC
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14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16  Name: Matthias Blume  Name: Matthias Blume
17    Date: 2001/06/27 15:10:00 EDT
18    Tag: blume-20010627-concur
19    Description:
20    
21    Fixed a small bug in CM's handling of parallel compilation.
22    (You could observe the bug by Control-C-interrupting an ordinary
23    CMB.make or CM.stabilize and then attaching some compile servers.
24    The result was that all of a sudden the previously interrupted
25    compilation would continue on its own.  This was because of
26    an over-optimization: CM did not bother to clean out certain queues
27    when no servers were attached "anyway", resulting in the contents
28    of these queues to grab control when new servers did get attached.)
29    
30    There is also another minor update to the CM manual.
31    
32    ----------------------------------------------------------------------
33    Name: Matthias Blume
34    Date: 2001/06/26 16:15:00 EDT
35    Tag: blume-20010626-cmdoc
36    Description:
37    
38    Minor typo fixed in CM manual (syntax diagram for libraries).
39    
40    ----------------------------------------------------------------------
41    Name: Matthias Blume
42    Date: 2001/06/25 22:55:00 EDT
43    Tag: blume-20010625-x86pc
44    Description:
45    
46    Fixed a nasty bug in the X86 assembly code that caused signal
47    handlers to fail (crash) randomly.
48    
49    ----------------------------------------------------------------------
50    Name: Matthias Blume
51    Date: 2001/06/25 12:05:00 EDT
52    Tag: blume-20010625-nlffigen
53    Description:
54    
55    This update fixes a number of minor bugs in ml-nlffigen as reported by
56    Nick Carter <nbc@andrew.cmu.edu>.
57    
58      1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
59      2. Default names for generated files are now derived from the name of
60         the C file *without its directory*.  In particular, this causes generated
61         files to be placed locally even if the C file is in some system directory.
62      3. Default names for generated signatures and structures are also derived
63         from the C file name without its directory.  This avoids silly things
64         like "structure GL/GL".
65         (Other silly names are still possible because ml-nlffigen does not do
66          a thorough check of whether generated names are legal ML identifiers.
67          When in doubt, use command line arguments to force particular names.)
68    
69    ----------------------------------------------------------------------
70    Name: Matthias Blume
71    Date: 2001/06/21 12:25:00 EDT
72    Tag: blume-20010621-eXene
73    Description:
74    
75    eXene now compiles and (sort of) works again.
76    
77    The library name (for version > 110.33) is $/eXene.cm.
78    
79    I also added an new example in src/eXene/examples/nbody.  See the
80    README file there for details.
81    
82    ----------------------------------------------------------------------
83    Name: Matthias Blume
84    Date: 2001/06/20 16:40:00 EDT
85    Tag: blume-20010620-cml
86    Description:
87    
88    CML now compiles and works again.
89    
90    Libraries (for version > 110.33):
91    
92      $cml/cml.cm            Main CML library.
93      $cml/basis.cm          CML's version of $/basis.cm.
94      $cml/cml-internal.cm   Internal helper library.
95      $cml/core-cml.cm       Internal helper library.
96      $cml-lib/trace-cml.cm  Tracing facility.
97      $cml-lib/smlnj-lib.cm  CML's version of $/smlnj-lib.cm
98    
99    The installer (config/install.sh) has been taught how to properly
100    install this stuff.
101    
102    ----------------------------------------------------------------------
103    Name: Matthias Blume
104    Date: 2001/06/19 17:55:00 EDT
105    Tag: blume-20010619-instantiate
106    Description:
107    
108    This un-breaks the fix for bug 1432.
109    (The bug was originally fixed in 110.9 but I broke it again some
110    time after that.)
111    
112    ----------------------------------------------------------------------
113    Name: Matthias Blume
114    Date: 2001/06/19 17:25:00 EDT
115    Tag: blume-20010619-signals
116    Description:
117    
118    This should (hopefully) fix the long-standing signal handling bug.
119    (The runtime system was constructing a continuation record with an
120    incorrect descriptor which would cause the GC to drop data on the floor...)
121    
122    ----------------------------------------------------------------------
123    Name: Matthias Blume
124    Date: 2001/06/15 15:05:00 EDT
125    Tag: blume-20010615-moresparc
126    Description:
127    
128    Here is a short late-hour update related to Sparc c-calls:
129    
130     -- made handling of double-word arguments a bit smarter
131    
132     -- instruction selection phase tries to collapse certain clumsily
133        constructed ML-Trees; typical example:
134    
135            ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
136    
137        This currently has no further impact on SML/NJ since mlriscGen does
138        not seem to generate such patterns in the first place, and c-calls
139        (which did generate them in the beginning) has meanwhile been fixed
140        so as to avoid them as well.
141    
142    ----------------------------------------------------------------------
143    Name: Matthias Blume
144    Date: 2001/06/15 15:05:00 EDT
145    Tag: blume-20010615-sparc
146    Description:
147    
148    The purpose of this update is to provide an implementation of NLFFI
149    on Sparc machines.
150    
151    Here are the changes in detail:
152    
153       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
154       the Sparc implementation of the c-calls API.
155       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
156       for accessing the ML frame.  Thus, we have a real frame pointer and
157       can freely modify %sp without need for an omit-frame-ptr phase.
158       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
159       this case.
160       * ml-nlffigen has been taught to produce code for different architectures
161       and calling conventions.
162       * In a way similar to what was done in the x86 case, the Sparc
163       backend uses its own specific extension to mltree.  (For example,
164       it needs to be able to generate UNIMP instructions which are part
165       of the calling convention.)
166       * ml-nlffi-lib was reorganized to make it more modular (in particular,
167       to make it easier to plug in new machine- and os-dependent parts).
168    
169    There are some other fairly unrelated bug fixes and cleanups as well:
170    
171       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
172       that they properly share their libraries with existing SML/NJ libraries.
173       * I fixed a minor cosmetic bug in CM, supressing certain spurious
174       follow-up error messages.
175       * Updates to CM/CMB documentation.
176    
177    TODO items:
178    
179       * MLRISC should use a different register as its asmTemp on the Sparc.
180         (The current %o2 is a really bad choice because it is part of the
181         calling conventions, so things might interfere in unexpected ways.)
182    
183    ----------------------------------------------------------------------
184    Name: Matthias Blume
185    Date: 2001/06/07
186    Tag: blume-20010607-calls
187    Description:
188    
189    A number of internal changes related to C calls and calling conventions:
190    
191    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
192       number of bytes popped implicitly (by the callee).  In most cases
193       this field is 0 but on x86/win32 it is some non-zero value.  This
194       is information provided for the benefit of the "omit-frameptr" pass.
195    2. The CALL instruction on the x86 carries a similar "pops" field.
196       The instruction selection phase copies its value from the ML-Tree
197       CALL statement.
198    3. On all other architectures, the instruction selection phase checks
199       whether "pops=0" and complains if not.
200    4. The c-calls implementation for x86 now accepts two calling conventions:
201       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
202       up after the call and pops is set to 0.  For "stdcall", the caller
203       does nothing, leaving the cleanup to the callee; pops is set to
204       the number of bytes that were pushed onto the stack.
205    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
206       distinguish between "ccall" and "stdcall".
207    6. The UNIMP instruction has been added to the supported Sparc instruction
208       set. (This is needed for implementing the official C calling convention
209       on this architecture.)
210    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
211       work with the latest CM.
212    
213    ----------------------------------------------------------------------
214    Name: Matthias Blume
215    Date: 2001/06/05 15:10:00 EDT
216    Tag: blume-20010605-cm-index
217    Description:
218    
219    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
220    
221    1. CM can now generate "index files".  These are human-readable files
222       that list on a per-.cm-file basis each toplevel symbol defined or
223       imported.  The location of the index file for
224       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
225       To enable index-file generation, set CM.Control.generate_index to true
226       or export an environment-symbol: export CM_GENERATE_INDEX=true.
227    
228       The CM manual has been updated accordingly.
229    
230    2. I made some slight modifications to the c-calls API in MLRISC.
231    
232         a) There is now a callback to support saving/restoring of
233            dedicated but caller-save registers around the actual call
234            instruction.
235         b) One can optionally specify a comment-annotation for the
236            call instruction.
237    
238    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
239       (For example, the comment annotation shows the C prototype of
240        the function being called.)
241    
242    ----------------------------------------------------------------------
243    Name: Matthias Blume
244    Date: 2001/06/01 13:30:00 EDT
245    Tag: blume-20010601-nlffi-cleanup
246    Description:
247    
248    This is mostly a cleanup of MLFFI stuff:
249    
250       - some signature files have been put into a more exposed place
251       - the ugly 'f type parameter is gone (simplifies types tremendously!)
252       - ml-nlffigen changed accordingly
253       - tutorial updated
254    
255    Other changes:
256    
257       - author's affiliation in CM manual(s) updated
258       - some more recognized keywords added to Allen's sml.sty
259    
260    ----------------------------------------------------------------------
261    Name: Matthias Blume
262    Date: 2001/05/25 15:30:00 EDT
263    Tag: blume-20010525-iptr
264    Description:
265    
266      - put the official 110.33-README (as it appears on the ftp server) under
267        CVS
268      - fixed a small bug related to incomplete pointer types in
269        ml-nlffigen
270      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
271        (it does not need the 'f type parameter)
272    
273    ----------------------------------------------------------------------
274    Name: Matthias Blume
275    Date: 2001/05/23 14:30:00 EDT
276    Tag: Release_110_33
277    Description:
278    
279    New version number (110.33).  New bootfiles.
280    
281    ----------------------------------------------------------------------
282    Name: Matthias Blume
283    Date: 2001/05/22 18:06:00 EDT
284    Tag: blume-20010522-targets
285    Description:
286    
287    Made install.sh use file config/targets.customized if it exists, falling
288    back to config/targets if it doesn't.  This way one can have a customized
289    version of the targets file without touching the "real thing", thus
290    eliminating the constant fear of accidentally checking something bogus
291    back into the CVS repository...  (File config/targets.customized must
292    not be added to the repository!)
293    
294    ----------------------------------------------------------------------
295    Name: Matthias Blume
296    Date: 2001/05/22 16:30:00 EDT
297    Tag: blume-20010522-minitut
298    Description:
299    
300    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
301       struct returns.
302    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
303       incomplete, preliminary documentation for NLFFI.
304    
305    ----------------------------------------------------------------------
306    Name: Matthias Blume
307    Date: 2001/05/14 11:30:00 EDT
308    Tag: blume-20010514-script
309    Description:
310    
311    Some bugs in install script fixed.
312    
313    In addition to that I also made a slight change to the NLFFI API:
314    Functors generated by ml-nlffigen now take the dynamic library as a
315    straight functor argument, not as a suspended one.  (The original
316    functor code used to force the suspension right away anyway, so there
317    was nothing gained by this complication of the interface.)
318    
319    ----------------------------------------------------------------------
320    Name: Matthias Blume
321    Date: 2001/05/11 14:35:00 EDT
322    Tag: blume-20010511-ml-nlffi
323    Description:
324    
325    I finally took the plunge and added my new FFI code to the main
326    repository.  For x86-linux it is now ready for prime-time.
327    
328    There are two new subdirectories of "src":
329    
330      - ml-nlffi-lib:
331           The utility library for programs using the FFI interface.
332           Here is the implementation of $/c.cm and its associated low-level
333           partners $/c-int.cm and $/memory.cm.
334      - ml-nlffigen:
335           A stand-alone program for generating ML glue code from C source
336           code.
337    
338    Building ml-nlffigen requires $/ckit-lib.cm.
339    
340    The config/install.sh script has been updates to do the Right Thing
341    (hopefully).
342    
343    Notice that the source tree for the C-Kit will not be put under "src"
344    but directly under the installation root directory.  (This is the
345    structure that currently exists on the CVS server when you check out
346    module "sml".)  Fortunately, config/install.sh knows about this oddity.
347    
348    Bugs: No documentation yet.
349    
350    ----------------------------------------------------------------------
351    Name: Matthias Blume
352    Date: 2001/05/09 16:35:00 EDT
353    Tag: blume-20010509-cpscontract
354    Description:
355    
356    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
357    wrapper/unwrapper elimination did not decrement usage counts and some
358    dead variables got overlooked by the dead-up logic.)
359    
360    ----------------------------------------------------------------------
361    Name: Lal George
362    Date: 2001/05/08  17:26:09 EDT
363    Tag: george-20010508-omit-frameptr
364    Description:
365    
366    Changes to implement the omit-frame-pointer optimization to support
367    raw C calls. For now, there is only support on the Intel x86, but
368    other architectures will follow as more experience is gained with this.
369    
370    
371    ----------------------------------------------------------------------
372    Name: Matthias Blume
373    Date: 2001/05/07 14:40:00 EDT
374    Tag: blume-20010507-proxies
375    Description:
376    
377    I made into "proxy libraries" all libraries that qualify for such a
378    change.  (A qualifying library is a library that has another library or
379    groups as its sole member and repeats that member's export list
380    verbatim.  A proxy library avoids this repetition by omitting its export
381    list, effectively inheriting the list that its (only) member exports.
382    See the CM manual for more explanation.)
383    The main effect is that explicit export lists for these libraries
384    do not have to be kepts in sync, making maintenance a bit easier.
385    
386    I also added copyright notices to many .cm-files.
387    
388    Last but not least, I made a new set of bootfiles.
389    
390    ----------------------------------------------------------------------
391    Name: Matthias Blume
392    Date: 2001/05/04 17:00:00 EDT
393    Tag: blume-20010504-cm-lsplit
394    Description:
395    
396    0. John merged pending changes to $/smlnj-lib.cm
397    
398    1. Allen's previous change accidentally backed out of one of Lal's
399       earlier changes.  I undid this mistake (re-introducing Lal's change).
400    
401    2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
402       within the compiler where applicable.  There is some code simplification
403       because of that.
404    
405    3. The "split" phase (in FLINT) is now part of the default list of phases.
406       Compiler.Control.LambdaSplitting.* can be used to globally control the
407       lambda-splitting (cross-module-inlining) engine.  In addition to that,
408       it can now also be controlled on a per-source basis: CM has been taught
409       a new tool parameter applicable to ML source files.
410    
411       - To turn lambda-splitting off completely:
412            local open Compiler.Control.LambdaSplitting in
413                val _ = set Off
414            end
415       - To make "no lambda-splitting" the global default (but allow per-source
416         overriding); this is the initial setting:
417            local open Compiler.Control.LambdaSplitting in
418                val _ = set (Default NONE)
419            end
420       - To make "lambda-splitting with aggressiveness a" the global default
421         (and allow per-source overriding):
422            local open Compiler.Control.LambdaSplitting in
423                val _ = set (Default (SOME a))
424            end
425    
426       - To turn lambda-splitting off for a given ML souce file (say: a.sml)
427         write (in the respective .cm-file):
428            a.sml (lambdasplitting:off)
429       - To turn lambda-splitting for a.sml on with minimal aggressiveness:
430            a.sml (lambdasplitting:on)
431       - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
432         <a> is a decimal non-negative integer):
433            a.sml (lambdasplitting:<a>)
434       - To turn lambda-splitting for a.sml on with maximal aggressiveness:
435            a.sml (lambdasplitting:infinity)
436       - To use the global default for a.sml:
437            a.sml (lambdasplitting:default)
438         or simply
439            a.sml
440    
441    ----------------------------------------------------------------------
442    Name: Allen Leung
443    Date: 2001/05/04 01:57:00 EDT
444    Tag: leunga-20010504-sync
445    Description:
446    
447      MLRISC features.
448    
449      1. Fix to CMPXCHG instructions.
450      2. Changed RA interface to allow annotations in callbacks.
451      3. Added a new method to the stream interface to allow annotations updates.
452    
453    ----------------------------------------------------------------------
454    Name: Matthias Blume
455    Date: 2001/05/01 11:45:00 EDT
456    Tag: blume-20010501-pcedittmp
457    Description:
458    
459    Changed install.sh to use the current working directory instead of
460    /usr/tmp for a temporary file (pcedittmp).  The previous choice
461    of /usr/tmp caused trouble with MacOS X because of file premission
462    problems.
463    
464    ----------------------------------------------------------------------
465    Name: Matthias Blume
466    Date: 2001/04/20 11:10:00 EDT
467    Tag: blume-20010420-inMLflag
468    Description:
469    
470     - added vp_limitPtrMask to vproc-state.h
471       (for use by the raw-C-calls mechanism to implement proper interrupt
472        handling)
473     - made the ML compiler aware of various data-structure offsets so it
474       can generate code for accessing the vp_inML flag and vp_limitPtrMask
475     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
476       raw C-calls
477    
478    ----------------------------------------------------------------------
479    Name: Lal George
480    Date: 2001/04/20 09:15:28 EDT
481    Tag: george-20010420-macosX
482    Description:
483    
484     - Changes to port to Mac OS X; Darwin.
485    
486     - In the process I found that sqrt was broken on the PPC, because the
487       fsqrt instruction is not implemented.
488    
489    ----------------------------------------------------------------------
490    Name: Matthias Blume
491    Date: 2001/04/18 12:45:00 EDT
492    Tag: blume-20010418-ccalls
493    Description:
494    
495     - fixed two off-by-4 errors in the x86-specific c-calls implementation
496       (this bug prevented structure arguments containing pointers from being
497        passed correctly)
498     - changed the raw-C-call code in mlriscGen.sml in such a way that
499       structure arguments are represented as a pointer to the beginning
500       of the structure (instead of having a series of synthesized arguments,
501       one for each structure member)
502    
503     - made makeml script's verbosity level configurable via environment
504       variable (MAKEML_VERBOSITY)
505    
506     - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
507       in rawmem-x86.sml; we are now using the real thing
508    
509    ----------------------------------------------------------------------
510    Name: Matthias Blume
511    Date: 2001/03/22 16:25:00 EST
512    Tag: blume-20010322-bootfiles
513    Description:
514    
515    Created a new set of bootfiles (for your automatic installation convenience).
516    
517    ----------------------------------------------------------------------
518    Name: Matthias Blume
519    Date: 2001/03/22 15:10:00 EST
520    Tag: blume-20010322-rawmem-parcm
521    Description:
522    
523    1. All "raw memory access" primitives for the new FFI are implemented now
524       (at least on the x86).
525    2. Some further cleanup of CM's parallel make mechanism.
526    
527    ----------------------------------------------------------------------
528    Name: Matthias Blume
529    Date: 2001/03/19 17:53:00 EST
530    Tag: blume-20010319-parallel
531    Description:
532    
533    Parallel make (using compile servers) now works again.
534    
535    To this end, CM.stabilize and CMB.make have been modified to work in
536    two passes when compile servers are attached:
537       1. Compile everything, do not perform stabilization; this pass
538          uses compile servers
539       2. Stabilize everything; this pass does not use compile servers
540    If there are no compile servers, the two passes are combined into one
541    (as before).  Splitting the passes increases the inherent parallelism
542    in the dependency graph because the entire graph including all
543    libraries is available at the same time.  This, in turn, improves
544    server utilization.  The downside is that the master process will
545    have to do some extra work after compilation is done (because for
546    technical reasons it must re-read all the binfiles during stabilization).
547    
548    ----------------------------------------------------------------------
549    Name: Matthias Blume
550    Date: 2001/03/16 12:22:00 EST
551    Tag: blume-20010316-bootfiles
552    Description:
553    
554    Created a new set of bootfiles (for your automatic installation convenience).
555    
556    ----------------------------------------------------------------------
557    Name: Matthias Blume
558    Date: 2001/03/16 11:00:00 EST
559    Tag: blume-20010316-MLTREE-fixup
560    Description:
561    
562    This is a minor fixup for an (untagged) earlier commit by Allen.
563    (A file was missing).
564    
565    ----------------------------------------------------------------------
566    Name: Allen Leung
567    Date: Mon Mar  5 18:54:57 EST 2001
568    Tag: leunga-20010305-cut-support
569    
570    1. New support for alternative control-flow in MLTREE.
571       Currently we support
572    
573          FLOW_TO(CALL ...., [k1,...,kn])
574    
575       This is needed for 'cuts to' in C-- and try/handle-like constructs
576       in Moby
577    
578       New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
579    
580    2. Register Allocator
581    
582       Changes in interface [from Fermin, John]
583    
584    3. Alpha 8-bit SLL support [Fermin]
585    
586    4. All architectures
587    
588       A new module (ClusterExpandCopies) for expanding parallel copies.
589    
590    ----------------------------------------------------------------------
591    Name: Allen Leung
592    Date: 2001/02/27 23:07:00 EST
593    Tag: leunga-20010227-minor-stuff
594    
595    1. Alpha bug fix for CMOVNE
596    2. Handle mltree COND(..,FCMP ...,...)
597    3. Bug fix in simplifier
598    
599    ----------------------------------------------------------------------
600    Name: Matthias Blume
601    Date: 2001/01/30 17:50:00 EST
602    Tag: blume-20010130-sync
603    Description:
604    
605    This is just a minor update to sync my devel branch with the main brach.
606    The only visible change is the addition of some README files.
607    
608    ----------------------------------------------------------------------
609    Name: Matthias Blume
610    Date: 2001/01/12 23:30:00 JST
611    Tag: blume-20010112-bootfiles
612    Description:
613    
614    Made a new set of bootfiles that goes with the current state of the
615    repository.
616    
617    ----------------------------------------------------------------------
618    Name: Matthias Blume
619    Date: 2001/01/12 21:20:00 JST
620    Tag: blume-20010112-sync
621    Description:
622    
623    I am just flushing out some minor changes that had accumulated in
624    my private branch in order to sync with the main tree.  (This is
625    mainly because I had CVS trouble when trying to merge _into_ my
626    private branch.)
627    
628    Most people should be completely unaffected by this.
629    
630    ----------------------------------------------------------------------
631    Name: Allen Leung
632    Date: Thu Jan 11 21:03:00 EST 2001
633    Tag: leunga-20010111-labexp=mltree
634    Description:
635    
636    1.  Removed the type LabelExp and replace it by MLTree.
637    2.  Rewritten mltree-simplify with the pattern matcher tool.
638    3.  There were some bugs in alpha code generator which would break
639        64-bit code generation.
640    4.  Redo the tools to generate code with the
641    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
642        are now generated by perl scripts.
643    
644    ----------------------------------------------------------------------
645    Name: Matthias Blume
646    Date: 2001/01/10 21:55:00 JST
647    Tag: blume-20010110-rcc
648    Description:
649    
650    The RCC stuff now seems to work (but only on the x86).
651    This required hacking of the c-calls interface (and -implementation) in
652    MLRISC.
653    
654    Normal compiler users should be unaffected.
655    
656    ----------------------------------------------------------------------
657    Name: Matthias Blume
658    Date: 2001/01/09 01:20:00 JST
659    Tag: blume-20010109-rcc
660    Description:
661    
662    This is a fairly big patch, flushing out a large number of pending
663    changes that I made to my development copy over the last couple of days.
664    
665    Of practical relevance at this moment is a workaround for a pickling
666    bug that Allen ran into the other day.  The cause of the bug itself is
667    still unknown and it might be hard to fix it properly, but the
668    workaround has some merits of its own (namely somewhat reducing pickling
669    overhead for certain libraries).  Therefore, I think this solution should
670    be satisfactory at this time.
671    
672    The rest of the changes (i.e., the vast majority) has to do with my
673    ongoing efforts of providing direct support for C function calls from
674    ML.  At the moment there is a new primop "RAW_CCALL", typing magic
675    in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
676    case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
677    translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
678    handle RCC.
679    
680    The last part (the changes to mlriscGen.sml) are still known to be
681    wrong on the x86 and not implemented on all other architectures.  But
682    the infrastructure is in place. I had to change a few functor
683    signatures in the backend to be able to route the CCalls interface
684    from MLRISC there, and I had to specialize the mltree type (on the
685    x86) to include the necessary extensions. (The extensions themselves
686    were already there and redy to go in MLRISC/x86).
687    
688    Everything should be very happy as soon as someone helps me with
689    mlriscGen.sml...
690    
691    In any case, nothing of this should matter to anyone as long as the
692    new primop is not being used (which is going to be the case unless you
693    find it where I hid it :). The rest of the compiler is completely
694    unaffected.
695    
696    ----------------------------------------------------------------------
697    Name: Matthias Blume
698    Date: 2001/01/05 00:30:00 JST
699    Tag: blume-20010105-primops
700    Description:
701    
702    Added some experimental support for work that I am doing right now.
703    These changes mostly concern added primops, but there is also a new
704    experimental C library in the runtime system (but currently not enabled
705    anywhere except on Linux/X86).
706    
707    In the course of adding primops (and playing with them), I discovered that
708    Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
709    broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
710    To recover, I made type information in INL_PRIM mandatory and changed
711    prim.sml as well as built-in.sml accordingly.  The InLine structure now
712    has complete, correct type information (i.e., no bottom types).
713    
714    Since all these changes mean that we need new binfiles, I also bumped the
715    version number to 110.32.1.
716    
717    ----------------------------------------------------------------------
718    Name: Matthias Blume
719    Date: 2000/12/30 22:10:00 JST
720    Tag: blume-20001230-various
721    Description:
722    
723    Added proxy libraries for MLRISC and let MLRISC libraries refer
724    to each other using path anchors.  (See CM manual for explanation.)
725    
726    Updated CM documentation.
727    
728    Fixed some bugs in CM.
729    
730    Implemented "proxy" libraries (= syntactic sugar for CM).
731    
732    Added "-quiet" option to makeml and changed runtime system accordingly.
733    
734    Added cleanup handler for exportML to reset timers and compiler stats.
735    
736    ----------------------------------------------------------------------
737    Name: Lal George
738    Date: 2000/12/22 22:22:58 EST 2000
739    Tag: Release_110_32
740    Description:
741    
742            Infinite precision used throughout MLRISC.
743            see MLRISC/mltree/machine-int.sig
744    
745    ----------------------------------------------------------------------
746    Name: Matthias Blume
747    Date: 2000/12/22 23:16:00 JST
748    Tag: blume-20001222-warn
749    Description:
750    
751    Corrected wording and formatting of some CM warning message which I
752    broke in my previous patch.
753    
754    ----------------------------------------------------------------------
755    Name: Matthias Blume
756    Date: 2000/12/22 21:20:00 JST
757    Tag: blume-20001222-anchorenv
758    Description:
759    
760    Fixed CM's handling of anchor environments in connection with CMB.make.
761    
762    ----------------------------------------------------------------------
763    Name: Matthias Blume
764    Date: 2000/12/22 13:15:00 JST
765    Tag: blume-20001222-cleanup
766    Description:
767    
768    Removed src/cm/ffi which does not (and did not) belong here.
769    
770    ----------------------------------------------------------------------
771    Name: Matthias Blume
772    Date: 2000/12/21 23:55:00 JST
773    Tag: blume-20001221-exn
774    Description:
775    
776    Probably most important: CM no longer silently swallows all exceptions
777    in the compiler.
778    Plus: some other minor CM changes.  For example, CM now reports some
779    sizes for generated binfiles (code, data, envpickle, lambdapickle).
780    
781    ----------------------------------------------------------------------
782    Name: Matthias Blume
783    Date: 2000/12/15 00:01:05 JST
784    Tag: blume-20001215-dirtool
785    Description:
786    
787    - "dir" tool added.
788    - improvements and cleanup to Tools structure
789    - documentation updates
790    
791    ----------------------------------------------------------------------
792    Name: Allen Leung
793    Date: Thu Dec 14 03:45:24 EST 2000
794    Description:
795    Tag:  leunga-20001214-int-inf
796    Description:
797    
798       In IntInf, added these standard functions, which are missing from our
799    implementation:
800    
801        andb : int * int -> int
802        xorb : int * int -> int
803        orb  : int * int -> int
804        notb : int -> int
805         <<   : int * word -> int
806        ~>>  : int * word -> int
807    
808       Not tested, I hope they are correct.
809    
810    ----------------------------------------------------------------------
811    Name: Allen Leung
812    Date: Fri Dec  8 19:23:26 EST 2000
813    Description:
814    Tag:  leunga-20001208-nowhere
815    Description:
816    
817      Slight improvements to the 'nowhere' tool to handle OR-patterns,
818    to generate better error messages etc.  Plus a brief manual.
819    
820    ----------------------------------------------------------------------
821    Name: Lal George
822    Date: 2000/12/08 09:54:02 EST 2000
823    Tag: Release_110_31
824    Description:
825    
826    - Version 110.31
827    ----------------------------------------------------------------------
828    Name: Allen Leung
829    Date: Thu Dec  7 22:01:04 EST 2000
830    Tag:  leunga-20001207-cell-monster-hack
831    Description:
832    
833    Major MLRISC internal changes.  Affect all clients.
834    Summary:
835    
836    1.  Type CELLS.cell = int is now replaced by a datatype.
837        As a result, the old regmap is now gone.  Almost all interfaces
838        in MLRISC change as a consequence.
839    
840    2.  A new brand version of machine description tool (v3.0) that generates
841        modules expecting the new interface.  The old version is removed.
842    
843    3.  The RA interface has been further abstracted into two new functors.
844        RISC_RA and X86RA.  These functors have much simpler interfaces.
845        [See also directory MLRISC/demo.]
846    
847    4.  Some other new source->source code generation tools are available:
848    
849        a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
850        b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
851           I use this tool to generate the peephole optimizers---with the new
852           cell type changes, peephole rules are becoming difficult to write
853           without conditional pattern matching.
854    
855    5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
856        cover the entire MLRISC source tree so many things broke.
857    
858    6.  CM files have been moved to the subdirectory MLRISC/cm.
859        They are moved because there are a lot of them and they clutter up the
860        root dir.
861    
862    7.  More detailed documentation to come...
863    
864        NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
865        a makeml -rebuild first.  This is because of other other
866        changes that Matthias has made (see below).
867    
868    
869    ----------------------------------------------------------------------
870    Name: Matthias Blume
871    Date: 2000/11/30 23:12:00 JST
872    Tag: blume-20001130-filereorg
873    Description:
874    
875    Some manual updates and some file reorganizations in CM.
876    
877    ----------------------------------------------------------------------
878    Name: Matthias Blume
879    Date: 2000/11/24 17:45:00 JST
880    Tag: blume-20001124-link
881    Description:
882    
883    Drastically improved link traversal code for the case that the dynamic
884    value was already loaded at bootstrap time.  As a result, CM and CMB
885    now both load blazingly fast -- even on a very slow machine.  Also,
886    memory consumption has been further reduced by this.
887    
888    Warning: The format of the PIDMAP file has changed.  THerefore, to
889    bootstrap you have to do this:
890    
891    1. Run CMB.make
892    2. Make a symbolic link for the boot directory:
893         ln -s sml.boot.ARCH-OS xxx
894    3. "Rebuild" the boot directory:
895         ./makeml -boot xxx -rebuild sml ; rm xxx
896    4. Boot normally:
897          ./makeml
898    
899    ----------------------------------------------------------------------
900    Name: Matthias Blume
901    Date: 2000/11/21 21:20:00 JST
902    Tag: blume-20001121-tools
903    Description:
904    
905    Continued hacking on autoloading problem -- with success this time.
906    Also changed tool-plugin mechanism.  See new CM manual.
907    
908    ----------------------------------------------------------------------
909    Name: Matthias Blume
910    Date: 2000/11/19 14:30:00 JST
911    Tag:  blume-20001119-autoload
912    Description:
913    
914    Some hacking to make autoloading faster.  Success for CMB, no success
915    so far for CM.  There is a reduced structure CM' that autoloads faster.
916    (This is a temporary, non-documented hack to be eliminated again when
917    the general problem is solved.)
918    
919    ----------------------------------------------------------------------
920    Name: Matthias Blume
921    Date: 2000/11/17 14:10:00 JST
922    Tag: blume-20001117-pickle-lib
923    Description:
924    
925    1. Eliminated comp-lib.cm
926    2. Made pickle-lib.cm
927    3. Eliminated all uses of intset.sml (from comp-lib.cm)
928    4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
929       equivalent constructs from smlnj-lib.cm (INtHashTable).
930    5. Point 4. also goes for those uses of intmap.* in MLRISC.
931       Duplicated intmap modules thrown out.
932    6. Hunted down all duplicated SCC code and replaced it with
933       equivalent stuff (GraphSCCFn from smlnj-lib.cm).
934    7. Rewrote Feedback module.
935    8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
936       should be thrown out and equivalent modules from smlnj-lib.cm
937       should be used (IntRedBlackSet, IntListSet, ...).
938    
939    Confirmed that compiler compiles to fixpoint.
940    
941    ----------------------------------------------------------------------
942    Name: Allen Leung
943    Date: 2000/11/10 18:00:00
944    Tag: leunga-20001110-new-x86-fp
945    
946    A new x86 floating point code generator has been added.
947    By default this is turned off.  To turn this on, do:
948    
949        CM.autoload "$smlnj/compiler.cm";
950        Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
951    
952    Changes:
953    
954    1.  Changed FTAN to FPTAN so that the assembly output is correct.
955    2.  Changed the extension callback for FTANGENT to generate:
956    
957              fptan
958              fstp  %st(0)
959        instead of
960              fptan
961              fstpl ftempmem
962    
963    3.  Numerous assembly fixes for x86.
964    
965    5.  Cleaned up the machine code output module x86/x86MC.sml and added
966        support for a whole bunch of instructions and addressing modes:
967    
968          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
969          faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
970          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
971          fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
972          fxch %st(n)
973          fld %st(n)
974          fst %st(n)
975          fst mem
976          fstp %st(n)
977          fucom %st(n)
978          fucomp %st(n)
979    
980        All these are now generated when the fast fp mode is turned on.
981    
982    6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
983    
984    ----------------------------------------------------------------------
985    Name: Matthias Blume
986    Date: 2000/11/09 11:20:00 JST
987    Tag: blume-20001109-scc
988    Description:
989    
990    Eliminated some code duplication:
991    
992    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
993       (Otherwise the functor is useless.)
994    2. Used GraphSCCFn where SCCUtilFun was used previously.
995    3. Got rid of SCCUtilFun (in comp-lib.cm).
996    
997    ----------------------------------------------------------------------
998    Name: Lal George
999    Date: 2000/11/06 09:02:21 EST 2000
1000    Tag: Release_110_30
1001    Description:
1002    
1003    - Version 110.30
1004    ----------------------------------------------------------------------
1005    Name: Matthias Blume
1006    Date: 2000/11/04 14:45:00
1007    Tag: blume-20001104-mlbuild
1008    Description:
1009    
1010    - Made ml-build faster on startup.
1011    - Documentation fixes.
1012    
1013    ----------------------------------------------------------------------
1014    Name: Matthias Blume
1015    Date: 2000/11/02 17:00:00 JST
1016    Tag: blume-20001102-condcomp
1017    Description:
1018    
1019    - Small tweaks to pickler -- new BOOTFILES!
1020    - Version bumped to 110.29.2.
1021    - Added conditional compilation facility to init.cmi (see comment there).
1022    ----------------------------------------------------------------------
1023    Name: Allen Leung
1024    Date: 2000/10/23 19:31:00
1025    Tag: leunga-20001023-demo-ra
1026    
1027    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
1028    2. Test programs for the graph library updated
1029    3. Some new MLRISC demo programs added
1030    
1031    ----------------------------------------------------------------------
1032    Name: Matthias Blume
1033    Date: 2000/08/31 22:15:00 JST
1034    Tag: blume-20001017-errmsg
1035    Description:
1036    
1037    More error message grief: Where there used to be no messages, there
1038    now were some that had bogus error regions.  Fixed.
1039    
1040    ----------------------------------------------------------------------
1041    Name: Matthias Blume
1042  Date: 2000/08/31 17:30:00 JST  Date: 2000/08/31 17:30:00 JST
1043  Tag: blume-20001017-v110p29p1  Tag: blume-20001017-v110p29p1
1044  Description:  Description:

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