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[smlnj] Diff of /sml/branches/primop-branch-3/NOTES/HISTORY
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Diff of /sml/branches/primop-branch-3/NOTES/HISTORY

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revision 1171, Fri Mar 22 20:41:43 2002 UTC revision 1620, Mon Sep 13 20:10:38 2004 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: John Reppy
17    Date: 2004/09/13
18    Tag: jhr-20040913-signals
19    Description:
20    
21    Fixed the signal masking code to properly nest mask/unmask operations
22    on a per-signal basis.
23    
24    ----------------------------------------------------------------------
25    Name: Matthias Blume (blume (at) tti - c (dot) org)
26    Date: 2004/09/08 13:20:00 CDT
27    Tag: blume-20040908-heap-magic
28    Description:
29    
30    Bumped the heap macig number to 0x09082004 to account for the changed
31    layout of the ML frame under MacOS X.
32    
33    ----------------------------------------------------------------------
34    Name: Allen Leung (leunga (at) reservoir (dot) com)
35    Date: 2004/09/03 11:26:00 EST
36    Tag: leunga-20040903-cygwin-install
37    Description:
38    
39       Added a patch to _arch-n-opsys to enable the Cygwin runtime.
40    The Cygwin runtime is turned on by setting the environment
41    variable SMLNJ_CYGWIN_RUNTIME to 1.
42    
43    ----------------------------------------------------------------------
44    Name: Matthias Blume (blume (at) tti - c (dot) org)
45    Date: 2004/08/31 17:15:00 CDT
46    Tag: blume-20040831-core
47    Description:
48    
49    Added some exports to src/compiler/core.cm upon request by J. Joemann.
50    
51    ----------------------------------------------------------------------
52    Name: Matthias Blume (blume (at) tti - c (dot) org)
53    Date: 2004/08/30 17:55:00 CDT
54    Tag: blume-20040830-installer
55    Description:
56    
57    Upon request by Johannes Joemann:
58    
59    - improved ML code of installer to fall back to coping when renaming
60      fails (i.e., when source and target are on different file systems);
61      the code compiles but has yet to be tested in anger
62    - removed mlrisc from list of default targets (config/targets)
63    
64    ----------------------------------------------------------------------
65    Name: Matthias Blume (blume (at) tti - c (dot) org)
66    Date: 2004/08/27 17:20:00 CDT
67    Tag: blume-20040827-ptreql
68    Description:
69    
70    Added ptreql primop to structure InlineT (upon request from Larry
71    Paulson).
72    
73    ----------------------------------------------------------------------
74    Name: Allen Leung (leunga (at) reservoir (dot) com)
75    Date: 2004/08/15 21:21:00 EST
76    Tag: leunga-110_48-udgraph
77    Description:
78    
79    Another bug fix from Carl Hauser:
80    
81    diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml
82    > 48c48
83    > <              | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else
84    > e::L)
85    > ---
86    > >              | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L)
87    > Without this, any deletion of an edge in an undirected graph does severe
88    > violence to the graph.
89    
90    ----------------------------------------------------------------------
91    Name: Allen Leung (leunga (at) reservoir (dot) com)
92    Date: 2004/08/10 23:35:00 EST
93    Tag: leunga-110_48-ppc
94    Description:
95    
96       The IBM/MacOS syntax switch on PPC was incorrectly swapped.
97    
98    ----------------------------------------------------------------------
99    Name: Matthias Blume (blume (at) tti - c (dot) org)
100    Date: 2004/08/10 12:00:00 CDT
101    Tag: Release_110_48
102    Description:
103    
104    New working version (110.48).  NEW BOOTFILES!
105    
106    ----------------------------------------------------------------------
107    Name: Allen Leung (leunga (at) reservoir (dot) com)
108    Date: 2004/08/09 12:21:00 EST
109    Tag: leunga-110_47-dijsktra
110    Description:
111    
112    Bug fix from Carl Hauser:
113    
114    single_source_shortest_paths in dijkstra.sml was observed to get wrong
115    answers (by comparing to single_source_shortest_paths in bellman-ford.sml).
116    
117    The problem is that following the expression A.update(dist,s,Num.zero)
118    it is necessary to update the priority queue using Q.decreaseWeight(Q,s).
119    
120    ----------------------------------------------------------------------
121    Name: Matthias Blume (blume (at) tti - c (dot) org)
122    Date: 2004/08/06 18:10:00 CDT
123    Tag: blume-20040806-cmdline
124    Description:
125    
126    Fiddled with handling of command-line options:
127    
128      * sml now quits after processing the command line
129        if -H, -S, -h<n>, or -s<n> appears as the last
130        command-line argument
131      * a new option -q terminates the session when encountered on
132        the command line; subsequent arguments will be ignored
133      * bug fixes: short (erroneous) arguments are no longer ignored
134        completely
135    
136    ----------------------------------------------------------------------
137    Name: Allen Leung (leunga (at) reservoir (dot) com)
138    Date: 2004/08/04 18:17:00 EST
139    Tag: leunga-110_47-ppc-ibm-asm
140    Description:
141    
142      - Added minimal IBM assembly syntax support for PowerPC.
143    
144      - Cygwin: manually changed the file cygwin.def.  Some exported symbols have
145        been altered in the runtime.  We need an automatic way to keep the file
146        in sync.
147    
148    ----------------------------------------------------------------------
149    Name: Matthias Blume (blume (at) tti - c (dot) org)
150    Date: 2004/08/04 14:00:00 CDT
151    Tag: Release_110_47
152    Description:
153    
154    New working version (110.47).  NEW BOOTFILES!
155    
156    ----------------------------------------------------------------------
157    Name: Matthias Blume (blume (at) tti - c (dot) org)
158    Date: 2004/08/03 14:25:00 CDT
159    Tag: blume-20040803-callingconv
160    Description:
161    
162    Added low-level support for choosing C calling conventions by
163    twiddling the type of rawccall.  (See
164    src/compiler/Semant/types/cproto.sml for details.)
165    
166    ----------------------------------------------------------------------
167    Name: Matthias Blume (blume (at) tti - c (dot) org)
168    Date: 2004/08/02 15:55:00 CDT
169    Tag: blume-20040802-backout
170    Description:
171    
172    Backed out of change to win32-filesys.c.  The earlier patch to
173    get_file_time caused CM to produce files with the wrong time stamp.
174    
175    ----------------------------------------------------------------------
176    Name: Matthias Blume (blume (at) tti - c (dot) org)
177    Date: 2004/08/02 14:45:00 CDT
178    Tag: blume-20040802-nlffi-win32
179    Description:
180    
181    Added NLFFI support for Win32, adapted from a patch provided by David
182    Hansel.  This is currently completely untested.  Also, the issue
183    concerning stdcall vs. ccall is still unresolved.
184    
185    ----------------------------------------------------------------------
186    Name: Matthias Blume (blume (at) tti - c (dot) org)
187    Date: 2004/07/30 17:55:00 CDT
188    Tag: blume-20040730-various
189    Description:
190    
191    Gearing up towards 110.47...
192    
193    - various minor bugfixes to ml-nlffigen
194    - a beginning of a manual for nlffi
195    
196    - eliminated 'export name=value' in config/install.sh as this does
197      not work with certain versions of /bin/sh
198      (Thanks to David King at Motorola for catching this.)
199    
200    - several bugfixes provided or suggested by David Hansel at Reactive Systems:
201      - added a test for tm==NULL to gmtime.c and localtime.c
202      - applied patch for incorrect GetFileTime under win32
203      - toSeconds -> toMilliseconds in Win32/win32-process.sml
204    
205    ----------------------------------------------------------------------
206    Name: Matthias Blume (blume (at) tti - c (dot) org)
207    Date: 2004/07/21 18:20:00 CDT
208    Tag: blume-20040721-nlffigen
209    Description:
210    
211    - Fixed minor issue in ml-nlffigen: Now generate structure T_foo
212      for a typedef to an incomplete type, but leave out the "typ" member.
213      (This is just for consistency.)
214    - Started to produce what is supposed to become better (i.e., comprehensive)
215      documentation of what ml-nlffigen does and produces.
216    
217    ----------------------------------------------------------------------
218    Name: Matthias Blume (blume (at) tti - c (dot) org)
219    Date: 2004/07/14 16:25:00 CDT
220    Tag: blume-20040714-union
221    Description:
222    
223    Added C_UNION to c-calls/c-types.sml and updated the machinery
224    (ml-nlffigen, cproto.sml) that conveys C function interface
225    information to the code generator.
226    
227    However, the actual architecture-specific implementation of function
228    arguments and results that are C unions is still not implemented.
229    
230    ----------------------------------------------------------------------
231    Name: Allen Leung (leunga (at) reservoir (dot) com)
232    Date: 2004/07/14 14:38:00 EST
233    Tag: leunga-110_46_1-ppc-lwzu
234    Description:
235    
236        Added these instructions to the PowerPC architecture:
237        LBZU(X), LHZU(X), LWZU(X),
238        STWU(X), STFDU, STFSU
239    
240        etc...
241    
242        Note: I haven't added their instruction encoding into the description.
243    
244    ----------------------------------------------------------------------
245    Name: Allen Leung (leunga (at) reservoir (dot) com)
246    Date: 2004/07/13 15:04:00 EST
247    Tag: leunga-110_46_1-ppc-lwarx
248    Description:
249    
250       Added the two instructions LWARX and STWCX to the PowerPC
251    instruction set.
252    
253       A (untested) rewrite of loop-structure.sml.  The old version
254    is completely broken.
255    
256    ----------------------------------------------------------------------
257    Name: Matthias Blume (blume (at) tti - c (dot) org)
258    Date: 2004/07/13 13:50:00 CDT
259    Tag: blume-20040713-nlffi
260    Description:
261    
262    - use paramAlloc to report c-calls with too many arguments
263      (for PPC version where parameter area is pre-allocated)
264    - added ccall_maxargspace to machspec (to implement the above)
265    - made "make" commend in CM's "make" tool configurable
266    - added option (default: on) for passing the name of the SML/NJ's "bin"
267      directory to "make"; the call looks like this:
268    
269         make <options> SMLNJ_BINDIR=<dir> <target>
270    
271      This can be used by the Makefile to, e.g., pick the "right" version
272      of ml-nlffigen.
273    - minor code tweaks
274    
275    ----------------------------------------------------------------------
276    Name: Matthias Blume (blume (at) tti - c (dot) org)
277    Date: 2004/07/12 22:50:00 CDT
278    Tag: blume-110_46_1-macosx-nlffi
279    Description:
280    
281    NLFFI under Mac OS X now working (sort of).  This is largely untested,
282    though.
283    
284    Note:  1. You have to make a new, clean build of the runtime system.
285           2. There are new BOOTFILES, you have to use them!
286              (Doing the bootstrap process yourself would be *very* painful!
287               If you absolutely have to do it, build the system under
288               a different architecture and then cross-compile.)
289    
290    Version bumped to 110.46.1 to account for runtime data format changes.
291    
292    ----------------------------------------------------------------------
293    Name: Matthias Blume (blume (at) tti - c (dot) org)
294    Date: 2004/06/18 14:30:00 CDT
295    Tag: blume-20040618-unix
296    Description:
297    
298    Changed the implementation of structure Unix so that the same stream
299    is returned every time one of the {text,bin}{In,Out}streamOf functions
300    is invoked on the same proc.  This is not what the spec currently
301    says -- although IMO it arguably should.  (See discussion below.)
302    
303    ----------------------------------------------------------------------
304    Name: Matthias Blume (blume (at) tti - c (dot) org)
305    Date: 2004/06/17 18:15:00 CDT
306    Tag: Release_110_46
307    Description:
308    
309    New working version (110.46).  NEW BOOTFILES!
310    
311    ----------------------------------------------------------------------
312    Name: Matthias Blume (blume (at) tti - c (dot) org)
313    Date: 2004/06/17 17:20:00 CDT
314    Tag: blume-20040617-timer-unix
315    Description:
316    
317    Changed the interface of structures Timer and Unix to match the most
318    recent Basis spec.
319    
320    In the case of Unix there still seems to be an open/weird issue:
321    
322       The {text,bin}{In,Out}streamOf functions are supposed to create
323       fresh streams whenever they are called -- as opposed to have them
324       return the same stream every time.  This design is supposed to
325       prevent space leaks caused by proc values hanging on to streams.
326    
327       The reap function, on the other hand, is supposed to close the
328       streams.  This cannot be done without having a handle on the
329       stream in proc after all...
330    
331    I took the liberty to implement the following stopgap solution:
332    
333      The proc value hangs on to the most recently created stream(s).
334      Reap closes those.  If either or both of the two streams hadn't
335      been created at all yet, then reap will close the corresponding
336      file descriptors directly.
337    
338    PS: I don't understand the original space leak argument anymore.  If
339    a proc hangs on to the imperative stream, then I/O operations on those
340    will advance the state of the cached stream and avoid the space leak.
341    
342    ----------------------------------------------------------------------
343    Name: Matthias Blume (blume (at) tti - c (dot) org)
344    Date: 2004/05/28 16:45:00 CDT
345    Tag: blume-20040528-basis
346    Description:
347    
348    Added signature PACK_REAL and exported functor PrimIO.
349    
350    ----------------------------------------------------------------------
351    Name: Matthias Blume (blume (at) tti - c (dot) org)
352    Date: 2004/05/25 16:00:00 CDT
353    Tag: blume-20040525-group-owner
354    Description:
355    
356    CM now ignores (but still accepts) the "owner" information in group
357    descriptions.  The owner of a group is its next enclosing
358    library. Each group must have a unique owner.  (There is a virtual
359    "toplevel" library that owns groups which are not nested within a real
360    library.)  Previously, each group had to explicitly declare its owner,
361    and CM would check that such a declaration is correct.  The new scheme
362    is to have CM check that for each group there is precisely one owning
363    library.
364    
365    The advantage of the new scheme is that the programmer no longer needs
366    to maintain the somewhat annoying owner information.  The downside is
367    that CM cannot enforce the ownership rule across multiple runs of
368    CM.make.  Fortunately, enclosing the same group in two different
369    libraries A and B which are not part of the same program does not
370    cause real problems.
371    
372    ----------------------------------------------------------------------
373    Name: Matthias Blume (blume (at) tti - c (dot) org)
374    Date: 2004/05/20 16:00:00 CDT
375    Tag: blume-20040520-win32
376    Description:
377    
378    Made the win32 version work again.  (Strangely, a misplaced comma had
379    slipped into win32-process.c which prevented the runtime from being
380    compiled correctly.)
381    
382    Also, included a minor addition to ml-build.bat analogous to what was
383    done in blume-20040519-ml-build.
384    
385    ----------------------------------------------------------------------
386    Name: Matthias Blume (blume (at) tti - c (dot) org)
387    Date: 2004/05/19 22:10:00 CDT
388    Tag: blume-20040519-ml-build
389    Description:
390    
391    Arranged for ml-build to clean up after itself a little bit better.
392    The script generates a temporary SML source file and compiles it using
393    CM, so CM generates metadata (GUID, SKEL, objectfile) for it.  It now
394    gets rid of those at the end, so they don't accumulate under .cm.
395    
396    This required a minor change to install.sh because the name of the
397    metadata directory (default: .cm) is actually configurable at
398    installation time.
399    
400    ----------------------------------------------------------------------
401    Name: Matthias Blume (blume (at) tti - c (dot) org)
402    Date: 2004/05/18 15:50:00 CDT
403    Tag: blume-20040518-mkreader
404    Description:
405    
406    Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
407    implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
408    
409    ----------------------------------------------------------------------
410    Name: Matthias Blume (blume (at) tti - c (dot) org)
411    Date: 2004/05/11 14:35:00 CDT
412    Tag: blume-20040511-win32sock
413    Description:
414    
415    Added previously missing support for many socket-related functions
416    under win32.  Thanks to David Hansel <hansel@reactive-systems.com>
417    for the voluminous patch!
418    
419    (I have not tested this patch under win32 yet.)
420    
421    Here is David's e-mail:
422    
423    Hi,
424    
425    Attached to this email you find a diff against sml/nj 110.45
426    that will enable socket support under Windows.
427    
428    To apply the patch (using unix or cygwin)
429    1) gunzip runtime.diff.gz
430    2) "cd" into "src/runtime" in the source tree of a fresh
431       110.45 installation.
432    3) patch -p 1 < [your/path/to]runtime.diff
433    
434    The code compiles fine but has NOT yet been extensively tested.
435    I only ran a few tests for basic socket client functionality
436    (which worked fine).  Especially the functions that use ioctl
437    are not tested at all and might not work (see below).
438    
439    I implemented this since we want to move to a newer version of sml/nj
440    but need socket support in order to use it.  This is the first time I
441    even had a look at the sml/nj source,  so please review my changes
442    before making this part of the distribution!  Here are a few issues
443    that I think might be better for someone to solve who is more
444    familiar with the sml/nj source (and socket programming):
445    
446    - getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
447      exception since I could not figure out what the windows equivalent
448      of these functions is
449    
450    - In sockets-osdep.h there are a some #include statements that are
451      only used in a few files that include sockets-osdep.h
452    
453    - In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
454      does not process its return value since I don't know how to
455      report an error upwards.
456    
457    - It would probably be good to have a call to WSACleanup() when
458      the library is unloaded (if there is such a possibility).
459      Otherwise I think Windows will take care of this automatically
460      when the process finishes.
461    
462    - I used ioctlsocket() as a replacement for ioctl() but I have
463      no idea if that is actually the proper replacement on Windows.
464    
465    - All these issues are marked in the code by "FIXME" comments.
466    
467    We use sml/nj extensively in our products and are quite happy
468    with it.  I hope this contribution will help you.
469    
470    Keep up the good work!
471    
472    David
473    
474    ----------------------------------------------------------------------
475    Name: Matthias Blume (blume (at) tti - c (dot) org)
476    Date: 2004/05/11 14:20:00 CDT
477    Tag: blume-20040511-installml
478    Description:
479    
480    Fixed two bugs in installml script.  (Thanks to Vesa A. Norrman for
481    the patch.)
482    
483    ----------------------------------------------------------------------
484    Name: Matthias Blume (blume (at) tti - c (dot) org)
485    Date: 2004/05/11 14:05:00 CDT
486    Tag: blume-20040511-nlffi-netbsd
487    Description:
488    
489    Added support for nlffi under netbsd.  (Thanks to Vesa A. Norrman for
490    the patch.)
491    
492    ----------------------------------------------------------------------
493    Name: Matthias Blume (blume (at) tti - c (dot) org)
494    Date: 2004/05/11 12:05:00 CDT
495    Tag: blume-20040511-exports
496    Description:
497    
498    As per request by Adam Chlipala <adam@hcoop.net>, extended various
499    export lists in compiler-related .cm-files.
500    
501    ----------------------------------------------------------------------
502    Name: Matthias Blume (blume (at) tti - c (dot) org)
503    Date: 2004/05/11 11:35:00 CDT
504    Tag: blume-20040511-allsource
505    Description:
506    
507    The installer now honors the "src-smlnj" target again, although its meaning
508    has changed from "all sources required for the compiler" to "all sources
509    the installer knows about".  In other words, if you enable "src-smlnj"
510    in the "targets" file, then the installer will pull in sources for
511    everything.  (Notice that this refers to source code only.  Compiled
512    code is still only installed for modules that were requested explicitly
513    or which are required for other modules that were requested explicitly.)
514    
515    ----------------------------------------------------------------------
516    Name: Matthias Blume (blume (at) tti - c (dot) org)
517    Date: 2004/04/23 17:40:00 CDT
518    Tag: blume-20040423-ieee-scan
519    Description:
520    
521    Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
522    in the exponent calculation we get INF or ZERO (depending on the mantissa
523    and the sign of the exponent).
524    
525    ----------------------------------------------------------------------
526    Name: Matthias Blume (blume (at) tti - c (dot) org)
527    Date: 2004/04/23 10:40:00 CDT
528    Tag: blume-20040423-ml-build
529    Description:
530    
531    The ml-build script now terminates with a non-0 status when something
532    goes wrong.
533    
534    ----------------------------------------------------------------------
535    Name: Matthias Blume (blume (at) tti - c (dot) org)
536    Date: 2004/04/22 16:35:00 CDT
537    Tag: blume-20040422-Option
538    Description:
539    
540    Made exception Option to be the same as exception Option.Option
541    (as it should be).
542    
543    ----------------------------------------------------------------------
544    Name: Allen Leung (leunga (at) reservoir (dot) com)
545    Date: 2004/03/19 14:40:00 EST
546    Tag: leunga-20040319-cygwin-nlffi
547    Description:
548    
549    Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
550    of SML/NJ.  The problem is that
551    
552       lib = dlopen(NULL, ...)
553       f   = dlsym(lib, "malloc");
554    
555    does not work on Windows unless we explicitly export symbols
556    such as 'malloc' during linking.  We fixed this by explicitly
557    exporting the required symbols with the magic gcc incantation:
558    
559        -Wl,--export-all cygwin.def
560    
561    where cygwin.def is a file containing all the symbols that
562    we wish to export.
563    
564    I suspect this is a Windows problem and we'll have to
565    do the same (somehow with windows compilers) when
566    we build the native win32 version with the system
567    calls LoadLibrary/GetProcAddress.
568    
569    ----------------------------------------------------------------------
570    Name: Matthias Blume (blume (at) tti - c (dot) org)
571    Date: 2004/03/04 16:35:00 CST
572    Tag: blume-20040304-intinf-fmt
573    Description:
574    
575    Fixed problem with IntInf.fmt (sign would show up on the right instead
576    of on the left for BIN, OCT, and HEX).
577    
578    ----------------------------------------------------------------------
579    Name: Matthias Blume (blume (at) tti - c (dot) org)
580    Date: 2004/03/04 11:25:00 CST
581    Tag: blume-20040304-symlinks
582    Description:
583    
584    Fixed problem with installer script (unix only) where bin/ml-yacc and
585    friends pointed (via symlinks) to absolute locations instead of just
586    .run-sml.  This was reported by Vesa A Norrman.
587    
588    ----------------------------------------------------------------------
589    Name: Matthias Blume (blume (at) tti - c (dot) org)
590    Date: 2004/02/13 14:50:00 CST
591    Tag: Release_110_45
592    Description:
593    
594    New working version (110.45). New bootfiles.
595    
596    ----------------------------------------------------------------------
597    Name: Matthias Blume (blume (at) tti - c (dot) org)
598    Date: 2004/01/26 15:15:15 CST
599    Tag: blume-20040126-toplevel
600    Description:
601    
602    Improved handling of exceptions at the interactive toplevel.
603    
604    ----------------------------------------------------------------------
605    Name: Matthias Blume (blume (at) tti - c (dot) org)
606    Date: 2004/01/26 11:25:00
607    Tag: blume-20040126-app
608    Description:
609    
610    Type of top-level "app" corrected.
611    Added code for setting vp_limitPtrMask to Win32-specific runtime.
612    
613    ----------------------------------------------------------------------
614    Name: Matthias Blume (blume (at) tti - c (dot) org)
615    Date: 2003/11/18 17:10 CST
616    Tag: blume-20031118-basis-fiddle
617    Description:
618    
619    - changed Timer interface to what might become the spec
620    - POSIX_FLAGS -> BIT_FLAGS according to spec
621    - some other minor discrepancies wrt. spec eliminated
622    
623    ----------------------------------------------------------------------
624    Name: Matthias Blume (blume (at) tti - c (dot) org)
625    Date: 2003/11/06 12:00:00 CST
626    Tag: Release_110_44
627    Description:
628    
629    New working version (110.44). New bootfiles.
630    
631    ----------------------------------------------------------------------
632    Name: Matthias Blume (blume (at) tti - c (dot) org)
633    Date: 2003/11/04 11:50:00 CST
634    Tag: blume-20031104-move-libraries
635    Description:
636    
637    Eliminated the "dont_move_libraries" directive in config/targets.
638    (The mechanism was broken and could not be fixed easily.  Moreover,
639    there does not seem to be any reason not to move all libraries into
640    lib during installation.  I originally implemented this directive as a
641    backward-compatibility feature when I first introduced the new CM.
642    Now that things have been stable for a long time and going back to the
643    old CM is not an option, there is no reason to keep it around.)
644    
645    ----------------------------------------------------------------------
646    Name: Matthias Blume (blume (at) tti - c (dot) org)
647    Date: 2003/11/03 16:00:00 CST
648    Tag: blume-20031103-installdir
649    Description:
650    
651    Made installer honor INSTALLDIR variable again.  (Thanks to Chris
652    Richards for pointing out the problem and providing the solution.)
653    
654    ----------------------------------------------------------------------
655    Name: Matthias Blume (blume (at) tti - c (dot) org)
656    Date: 2003/10/01 17:05:00 CDT
657    Tag: blume-20031001-lal-mlrisc
658    Description:
659    
660    MLRISC bug fix from Lal.
661    
662    ----------------------------------------------------------------------
663    Name: Matthias Blume (blume (at) tti - c (dot) org)
664    Date: 2003/09/30 16:10:00 CDT
665    Tag: blume-20030930-primio-bat
666    Description:
667    
668    1. Added openVector, nullRd, and nullWr to PRIM_IO.
669    2. Improved .bat files (for Win32 port) to make things work under Win95.
670       (thanks to Aaron S. Hawley for this one)
671    
672    ----------------------------------------------------------------------
673    Name: Matthias Blume (blume (at) tti - c (dot) org)
674    Date: 2003/09/26 16:05:00 CDT
675    Tag: blume-20030926-wrappriv
676    Description:
677    
678    Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
679    
680    ----------------------------------------------------------------------
681    Name: Matthias Blume (blume (at) tti - c (dot) org)
682    Date: 2003/09/26 15:00:00 CDT
683    Tag: blume-20030926-110_43_3
684    Description:
685    
686    - additional cleanup
687    - version number bump, NEW BOOTFILES
688    
689    ----------------------------------------------------------------------
690    Name: Matthias Blume (blume (at) tti - c (dot) org)
691    Date: 2003/09/26 12:00:00 CDT
692    Tag: blume-20030926-ppautoload
693    Description:
694    
695    I modified the read-eval-print loop so that the autoloader gets
696    invoked whenever the prettyprinter tries to look up a symbol that
697    is not currently defined in the toplevel environment but which
698    appears in CM's autoload registry.  As a result, we see far fewer of
699    those ?.Foo.Bar.xxx names in the prettyprinter's output.
700    
701    In addition to this I tried to clean up some pieces of the Basis
702    implementation (e.g., Socket, Word8Array) in order to prevent other
703    instances of these ?.Foo.Bar.xxx names from being printed.
704    
705    The mechanism that picks names for types still needs some work, though.
706    (Right now it seems that if there is a type A.t which is defined to
707    be B.u, but B is unavailable at toplevel, then A.t gets printed as
708    "?.B.u" although the perhaps more sensible solution would be to use
709    "A.t" in this case.  In other words, the prettyprinter should follow
710    a chain of DEFtycs not farther than there are corresponding toplevel
711    names in the current environment.)
712    
713    ----------------------------------------------------------------------
714    Name: Matthias Blume (blume (at) tti - c (dot) org)
715    Date: 2003/09/24 16:31:00 CDT
716    Tag: blume-20030924-installer
717    Description:
718    
719    Another installer tweak:  All the ML code for the installer is now
720    compiled during CMB.make and put into a little library called
721    $smlnj/installer.cm.  The installation then simply invokes
722    
723       sml -m $smlnj/installer.cm
724    
725    and everything happens automagically.
726    
727    Win32:  ML code senses value of environment variable SMLNJ_HOME.
728    Unix:   ML code senses values of environment variables ROOT, CONFIGDIR,
729            and BINDIR.
730    
731    The new scheme guarantees that the ML code responsible for the installation
732    is in sync with the APIs of the main system.  Also, the installer is
733    somewhat faster because the installer script is precompiled.
734    
735    ----------------------------------------------------------------------
736    Name: Matthias Blume (blume (at) tti - c (dot) org)
737    Date: 2003/09/24 15:35:00 CDT
738    Tag: blume-20030924-synsock
739    Description:
740    
741    Added a signature SYNCHRONOUS_SOCKET to basis.cm.  This is like SOCKET
742    but excludes all non-blocking operations.  Defined SOCKET (in Basis)
743    and CML_SOCKET in terms of SYNCHRONOUS_SOCKET.  Removed superfluous
744    implementations of non-blocking operations from CML's Socket
745    structure.
746    
747    ----------------------------------------------------------------------
748    Name: Matthias Blume (blume (at) tti - c (dot) org)
749    Date: 2003/09/24 15:10:05 CDT
750    Tag: blume-20030924-sockets
751    Description:
752    
753    1. Fixed SOCKET API and implementation to match Basis spec.
754       This required changing the internal representation of sockets to one
755       that remembers (for each socket file descriptor) whether it is currently
756       blocking or non-blocking.  This state is maintained lazily (i.e., a system
757       call is made only if the state actually needs to change).
758    
759    2. OS-specific details of sockets were moved into separate files, thus
760       making it possible to unify the bulk of the socket implementations
761       between Unix and Win32.
762    
763    3. CML's socket API changed accordingly.
764       (Note that we need to remove non-blocking functions from this API
765       since they are redundant in the case of CML!)
766    
767    4. CML's socket implementation now makes use of non-blocking functions
768       provided by Basis, thus removing all OS-dependent code from this part
769       of CML.
770    
771    5. Changed Real64.precision from 52 to 53.  Minor cleanup in Real64 code.
772    
773    ----------------------------------------------------------------------
774    Name: Matthias Blume (blume (at) tti - c (dot) org)
775    Date: 2003/09/22 12:10:00 CDT
776    Tag: blume-20030922-110_43_2
777    Description:
778    
779    Made a new interim version and bootfiles for developer's bootstrapping
780    convenience.
781    
782       110.43.2 -- NEW BOOTFILES
783    
784    ----------------------------------------------------------------------
785    Name: Matthias Blume (blume (at) tti - c (dot) org)
786    Date: 2003/09/19 15:55:00 CDT
787    Tag: blume-20030919-cmdir
788    Description:
789    
790    1. new-install.sh -> install.sh
791    2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
792    3. tweaked installer so that another name instead of .cm can be chosen
793       at install time (by setting the CM_DIR_ARC environment variable
794       during installation); once installation is complete, the name is
795       fixed
796    
797    ----------------------------------------------------------------------
798    Name: Matthias Blume (blume (at) tti - c (dot) org)
799    Date: 2003/09/18 16:00:00 CDT
800    Tag: blume-20030918-110_43_1
801    Description:
802    
803    Made a new interim version and bootfiles for developer's bootstrapping
804    convenience.
805    
806       110.43.1 -- NEW BOOTFILES
807    
808    ----------------------------------------------------------------------
809    Name: Matthias Blume (blume (at) tti - c (dot) org)
810    Date: 2003/09/18 15:20:00 CDT
811    Tag: blume-20030918-misc
812    Description:
813    
814    1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
815       this seems to be controversial at the moment) and used those in
816       Posix.ProcEnv.times.
817    
818    2. Added Time.{from,to}Nanoseconds to Time.
819    
820    3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
821       For example, fromLargeInt never needs to look at more than 3 "big
822       digits" to get its 53 bits of precision.
823    
824    ----------------------------------------------------------------------
825    Name: Matthias Blume (blume (at) tti - c (dot) org)
826    Date: 2003/09/17 16:30:00 CDT
827    Tag: blume-20030917-real32-slices
828    Description:
829    
830    Added an entry to the primitive environment
831    (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
832    added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
833    
834    Removed some of the "magic" constants in real64.sml and replaced them
835    with code that generates these values from their corresponding
836    integer counterparts.
837    
838    Made all(?) the slice-related changes to the Basis and made everything
839    compile again...
840    
841    ----------------------------------------------------------------------
842    Name: Matthias Blume (blume (at) tti - c (dot) org)
843    Date: 2003/09/15 17:45:00 CDT
844    Tag: blume-20030915-rbase
845    Description:
846    
847    Fixed bug in Real.fromLargeInt.
848    
849    ----------------------------------------------------------------------
850    Name: Matthias Blume (blume (at) tti - c (dot) org)
851    Date: 2003/09/13 18:11:00 CDT
852    Tag: blume-20030913-libinstall
853    Description:
854    
855    Minor bugfix in config/libinstall (set anchor with path to
856    standalone tool after installing it, otherwise libraries that
857    need ml-lex or ml-yacc won't compile the first time the installer
858    runs).
859    
860    ----------------------------------------------------------------------
861    Name: Matthias Blume (blume (at) tti - c (dot) org)
862    Date: 2003/09/12 11:45:00 CDT
863    Tag: blume-20030912-various
864    Description:
865    
866     - fixed bug in Real.toLargeInt
867     - fixed bug in Posix.ProcEnv.times
868     - changed inputLine functions to return an option
869     - minor installer improvements / bugfixes
870     - changed default @SMLalloc parameter for x86/celeron to 64k
871    
872    ----------------------------------------------------------------------
873    Name: Matthias Blume (blume (at) tti - c (dot) org)
874    Date: 2003/09/09 22:00:00 CDT
875    Tag: Release_110_43
876    Description:
877    
878        New working release 110.43.  New bootfiles.
879    
880    ----------------------------------------------------------------------
881    Name: Matthias Blume (blume (at) tti - c (dot) org)
882    Date: 2003/09/09 19:20:00 CDT
883    Tag: blume-20030909-installer
884    Description:
885    
886    Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
887    Modified config/install.bat to take advantage of it.  Also modified
888    config/install.sh (and called it config/new-install.sh) to take advantage
889    of it on Unix systems.  (The SML code is (supposed to be) platform-
890    independent.)
891    
892    The installer can now install everything under Win32
893    as well as under *nix as long as it compiles.
894    
895    Other changes:
896    
897      - made CML compile again under Win32
898      - made eXene compile under Win32 (by providing a fake structure UnixSock
899        and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
900      - fixed a bug in nowhere: it assumed that type OS.Process.status is the
901        same as type int;  under Win32 it isn't
902      - fixed some slice-related problems in the win32-specific parts of CML
903      - added a functor argument "sameVol" to os-path-fn.sml in the Basis
904        (under Win32, the volume name is case-insensitive, and the
905        OS.Path code compares volume names for equality)
906    
907    ----------------------------------------------------------------------
908    Name: Matthias Blume (blume (at) tti - c (dot) org)
909    Date: 2003/09/08 11:55:00 CDT
910    Tag: blume-20030908-fullpath
911    Description:
912    
913    Made Win32 version of OS.FileSys.fullPath return current directory
914    when given an empty string.  This is what the spec says, and incidentally,
915    CM depends on it.  (CM otherwise goes into an infinite loop in certain
916    cases when presented with the name of a non-existing .cm file.)
917    
918    ----------------------------------------------------------------------
919    Name: Matthias Blume (blume (at) tti - c (dot) org)
920    Date: 2003/09/04 16:30:00 CDT
921    Tag: blume-20030905-slices-etc
922    Description:
923    
924      1. Changed interface to vectors and arrays in Basis to match
925         (draft) Basis spec.
926      2. Added signatures and implementations of slices according to
927         Basis spec.
928      3. Edited source code throughout the system to make it compile again
929         under 1. and 2.  (In some cases code had to be added to have it
930         match the new signatures.)
931      4. MLRISC should be backward-compatible: the copies of the originals
932         of files that needed to change under 3. were retained, the .cm files
933         check the compiler version number and use old versions when
934         appropriate.
935      5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
936         dirstream -> string option (in accordance with Basis spec).
937      6. When generating code that counts lines, ml-lex used function
938         CharVector.foldli, taking advantage of its old interface.
939         This has been replaced with the corresponding code from
940         CharVectorSlice.  (html-lex must be re-lexed!)
941      7. BitArray in smlnj-lib/Util has been extended/modified to match the
942         new MONO_ARRAY signature.  (Do we need BitArraySlice?)
943      8. Removed temporary additions (fromInternal, toInternal) from the
944         (now obsolete) IntInf in smlnj-lib/Util.
945      9. Cleaned up structure Byte.
946     10. Added localOffset, scan, and fromString to Date (according to spec).
947         Cleaned/corrected implementation of Date.
948         (Still need to check for correctness; implement better canonicalizeDate.)
949     11. Added "scan" to signature IEEE_REAL.
950     12. Some improvements to IntInf [in particular: efficiency-hack for
951         mod and rem when second operand is 2 (for parity checks).]
952     13. Changed representation of type Time.time, using a single IntInf.int
953         value counting microseconds.  This considerably simplified the
954         implementation of structure Time.  We now support negative time
955         values; scan and fromString handle signs.
956     14. Functor PrimIO now takes two additional arguments (VectorSlice and
957         ArraySlice).
958    
959    ----------------------------------------------------------------------
960    Name: Matthias Blume (blume (at) tti - c (dot) org)
961    Date: 2003/08/28 17:00:00 CDT
962    Tag: blume-20030828-intinf
963    Description:
964    
965    This is a major update which comes with a version number bump
966    (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
967    and an implementation of IntInf in the Basis.
968    
969    There are a fairly large number of related changes and updates throughout
970    the system:
971    
972    Basis:
973            - Implemented IntInf.
974            - Made LargeInt a projection of IntInf (by filtering through INTEGER).
975            - Added some missing Real64 operations, most notably Real.toLargeInt.
976            - Added FixedInt as a synonym for Int32.
977    
978    compiler:
979            * Added support for a built-in intinf type.
980              - literals
981              - pattern matching
982              - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
983              - overloading on literals and operations
984    
985            This required adding a primitive type intinf, some additional
986            primops, and implementations for several non-trivial intinf
987            operations in Core.  (The intinf type is completely abstract
988            to the compiler; all operations get delegated back to the Core.)
989    
990            * Intinf equality is handled by polyequal.  However, the compiler
991            does not print its usual warning in this case (since polyequal
992            is the right thing to do there).
993    
994            * Improved the organization of structure InlineT.
995    
996            * A word about conversion primops:
997            If conversions involving intinf do not cancel out during
998            CPS contract, then the compiler must insert calls to Core functions.
999            Since all core access must be resolved already during the FLINT
1000            translate phase, it would be too late a the time of CPS contract
1001            to add new Core calls.  For this reason, conversion primops
1002            for intinf carry two arguments:  1. the numeric argument that
1003            they are supposed to convert, and 2. the Core function that
1004            can help with this conversion if necessary.  If CPS contract
1005            eliminates a primop, then the associated Core function becomes
1006            dead and goes away.  Intinf conversion primops that do not get
1007            eliminated by CPS contract get rewritten into calls of their
1008            core functions by a separate, new phase.
1009    
1010    interactive system:
1011            - Control.Print.intinfDepth controls max length of intinf constants
1012            being printed. (Analogous to Control.Print.stringDepth.)
1013            - Cleanup in printutil and pputil: got rid of unused stuff and
1014            duplicates; replaced some of the code with code that makes better
1015            use of library functionality.
1016    
1017    CM:
1018            Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
1019            are no longer silent.
1020    
1021    CKIT:
1022            Fixed mismatched uses of Int32 and LargeInt.  I always decided
1023            in favor of LargeInt -- which is now the same as IntInf.
1024            CKIT-knowledgable people should check whether this is what's
1025            intended and otherwise change things back to using Int32 or
1026            FixedInt.
1027    
1028    Throughout the code:
1029            Started using IntInf.int literals and built-in operations
1030            (e.g., comparison with 0) where this seems appropriate.
1031    
1032    
1033    ----------------------------------------------------------------------
1034    Name: Dave MacQueen (dbm@cs.uchicago.edu)
1035    Date: 2003/08/13 11:36:00 CDT
1036    Tag: dbm-20030813-mcz-merge1
1037    Description:
1038    
1039    Merging changes from the mcz-branch development branch into trunk.
1040    These changes involve replacement of the emulated old prettyprinter
1041    interface with direct use of the SML/NJ Lib PP library, and fixing
1042    of a couple of bugs (895, 1186) relating to error messages.  A new
1043    prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
1044    has been added.
1045    
1046    ----------------------------------------------------------------------
1047    Name: Matthias Blume (blume (at) tti - c (dot) org)
1048    Date: 2003/08/11 15:45:00 CDT
1049    Tag: blume-20030811-windows
1050    Description:
1051    
1052    Version number bumped to 110.42.9.  NEW BOOTFILES!!!
1053    
1054        http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
1055    
1056    This patch restores SML/NJ's ability to run under win32.  There are a
1057    number of changes, including fixes for several bugs that had gone
1058    unnoticed until now:
1059    
1060      - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
1061        trying to run the win32 version from within cygwin.)
1062    
1063      - There are a number of simple .bat scripts that substitute for their
1064        corresponding Unix shell-scripts.  (See below.)
1065    
1066      - The internals of ml-build have been modified slightly.  The main
1067        difference is that instead of calling ".link-sml" (or link-sml.bat)
1068        using OS.Process.system, the ML process delegates this task back
1069        to the script.  Otherwise problems arise in mixed environments such
1070        as Cygwin where scripts look and work like Unix scripts, but
1071        where OS.Process.system cannot run them.
1072    
1073      - In CM, the srcpath pickler used native pathname syntax -- which
1074        is incorrect in the case of cross-compilation.  The new pickle format
1075        is independent of platform-specific naming conventions.
1076    
1077      - Path configuration files (such as lib/pathconfig) can now choose
1078        between native and standard syntax.  Placing a line of the form
1079    
1080            standard!
1081    
1082        into the file causes all subsequent paths to be interpreted using
1083        CM standard pathname syntax (= Unix conventions); a line
1084    
1085            native!
1086    
1087        switches back to native style.  This was needed so that
1088        path config files can be written portably, see src/system/pathconfig.
1089    
1090      - Runtime system:
1091    
1092          - win32-filesys.c:  get_file_time and set_file_time now
1093            access modification time, not creation time.
1094    
1095          - I/O code made aware of new array representation.
1096    
1097          - Bug fixes in X86.prim.masm.
1098    
1099       - src/system/makeml made aware of win32. (For use under cygwin
1100            and other Unix-environments for windows.)
1101    
1102       - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
1103         which caused BinIO.inputAll to fail consistently.
1104    
1105    .bat scripts:
1106    
1107       Windows .bat scripts assume that SMLNJ_HOME is defined.
1108    
1109       - sml.bat, ml-yacc.bat, ml-lex.bat:  Driver scripts for standalone
1110         applications (sml, ml-yacc, ml-lex).
1111       - ml-build.bat: analogous to ml-build.
1112       - config\install.bat:  Analogous to config/install.sh.  This requires
1113         that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
1114         (nmake etc. must be on the path, and vcvars32 must have been run.)
1115         Moreover, sources for ml-lex and ml-yacc need to exist under src,
1116         and the bootfile hierarchy must have been unpacked under
1117         sml.boot.x86-win32.
1118         The script is very primitive and does a poor job at error checking.
1119         It only installs the base system, ml-lex, and ml-yacc.  No other
1120         libraries are being installed (i.e., you get only those that
1121         are part of the compiler.)
1122       - link-sml.bat:  analogous to .link-sml, but not currently used
1123    
1124    Unrelated bug fixes:
1125    
1126      - ml-nlffigen now exports structures ST_* corresponding to incomplete
1127        types.
1128      - Added getDevice to PP/src/pp-debug-fn.sml.  (Would not compile
1129        otherwise.)
1130    
1131    ----------------------------------------------------------------------
1132    Name: Dave MacQueen (macqueen@cs.uchicago.edu)
1133    Date: 2003/06/17
1134    Tag: macqueen-20030617-bug895
1135    Description:
1136    
1137    Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
1138    Tag will be used for new development branch (mcz-branch) for
1139    use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
1140    
1141    ----------------------------------------------------------------------
1142    Name: Matthias Blume (blume (at) tti - c (dot) org)
1143    Date: 2003/05/27 16:55:00 CDT
1144    Tag: blume-20030527-polyeq
1145    Description:
1146    
1147    Tried to eliminated most cases of polymorphic equality.
1148    
1149    ----------------------------------------------------------------------
1150    Name: Matthias Blume (blume (at) tti - c (dot) org)
1151    Date: 2003/05/21 17:45:00 CDT
1152    Tag: blume-20030517-complete
1153    Description:
1154    
1155    Two changes:
1156    
1157      1. Added a flag for controlling whether non-exhaustive bindings will
1158         be treated as errors (default is false).
1159      2. Cleaned up the *entire* source tree so that CMB.make goes through
1160         without a single non-exhaustive match- or bind warning.
1161    
1162    ----------------------------------------------------------------------
1163    Name: Matthias Blume (blume (at) tti - c (dot) org)
1164    Date: 2003/05/17 10:20:00 CDT
1165    Tag: blume-20030517-absyn
1166    Description:
1167    
1168    1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
1169    
1170       This mainly affects the quality of error messages.  However, some
1171       of the code is now more straightforward than before. (Treatment of
1172       the above four constructs in translate.sml is much simpler than
1173       the "macro-expansion" that was going on before.  Plus, the mach-
1174       compiler no longer gets invoked just to be able to compile an
1175       if-expression.)
1176    
1177    2. The ErrorMsg.Error exception is now caught and absorbed by the
1178       interactive loop.
1179    
1180    ----------------------------------------------------------------------
1181    Name: Allen Leung
1182    Date: 2003/05/16 13:05:00 CDT
1183    Tag: leunga-20030516-cygwin-runtime
1184    Description:
1185    
1186        Ported the runtime system to cygwin, which uses the unix
1187    x86-unix bin files.  Missing/buggy features:
1188    
1189       o getnetbyname, getnetbyaddr: these functions seem to be missing in
1190         the Cygwin library.
1191       o Ctrl-C handling may be flaky.
1192       o Windows system calls and Windows I/O are not supported.
1193    
1194       A new set of binfiles is located at:
1195    
1196         http://www.dorsai.org/~leunga/boot.x86-unix.tgz
1197    
1198       This is only needed for bootstrapping the cygwin version of smlnj.
1199       Other x86 versions can use the existing binfiles.
1200    
1201    ----------------------------------------------------------------------
1202    Name: Matthias Blume
1203    Date: 2003/04/08 15:42:00 CDT
1204    Tag: blume-20030408-listpair
1205    Description:
1206    
1207    1. Added a target 'mlrisc' to installer.
1208    
1209    2. Added missing elements to structure ListPair.
1210    
1211    ----------------------------------------------------------------------
1212    Name: Allen Leung
1213    Date: 2003/01/07 10:40:00 EST
1214    Tag: leunga-20030107-int-rem
1215    Description:
1216    
1217    Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
1218    The arguments to the SUBL instruction were swapped.
1219    
1220    ----------------------------------------------------------------------
1221    Name: Matthias Blume
1222    Date: 2002/12/12 16:25:00 EST
1223    Tag: blume-20021212-risc-ra
1224    Description:
1225    
1226    Fixed a serious bug in the rewrite code for FP spilling/reloading that
1227    sent the RA into an infinite loop when floating point registers get
1228    spilled.  (Because of this bug, e.g., nucleic stopped compiling between
1229    110.37 and 110.38.)
1230    There was another set of potential problems related to the handling of
1231    MLRISC annotations (but those did not yet cause real problems, apparently).
1232    
1233    ----------------------------------------------------------------------
1234    Name: Matthias Blume
1235    Date: 2002/12/06 22:40:00 EST
1236    Tag: blume-20021206-cm-fileid
1237    Description:
1238    
1239    Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
1240    This fixes the problem of CM getting confused by files that suddenly
1241    change their identity (e.g., by getting unlinked and recreated by some
1242    text editor such as vi).  There might be a better/cheaper/cleaner way
1243    of doing this, but for now this will have to do.
1244    
1245    ----------------------------------------------------------------------
1246    Name: Matthias Blume
1247    Date: 2002/10/28 09:50:00 EST
1248    Tag: blume-20021028-typecheck
1249    Description:
1250    
1251    Exported structure Typecheck from $smlnj/viscomp/core.cm.
1252    
1253    ----------------------------------------------------------------------
1254    Name: Matthias Blume
1255    Date: 2002/10/17 09:10:00 EDT
1256    Tag: Release_110_42
1257    Description:
1258    
1259    In good old tradition, there has been a slight hiccup so that we have
1260    to patch 110.42 after the fact.   The old release tag has been replaced
1261    (see below).
1262    
1263    The change solves a problem with two competing approaches the
1264    configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
1265    each other's way.
1266    
1267    This change only affects the runtime system code and the installer script.
1268    (No new bootfiles.)
1269    
1270    ----------------------------------------------------------------------
1271    Name: Matthias Blume
1272    Date: 2002/10/16 12:00:00 EDT
1273    Tag: Release_110_42_removed
1274    Description:
1275    
1276    New working release.  New bootfiles.
1277    
1278    ----------------------------------------------------------------------
1279    Name: Matthias Blume
1280    Date: 2002/10/10 13:10:00 EDT
1281    Tag: blume-20021010-ppc-divs
1282    Description:
1283    
1284    The mltree operator DIVS must be implemented with an overflow check on
1285    the PPC because the hardware indicates divide-by-zero using "overflow" as
1286    well.
1287    
1288    ----------------------------------------------------------------------
1289    Name: Matthias Blume
1290    Date: 2002/07/23 11:45:00
1291    Tag: blume-20020723-smlnj-home
1292    Description:
1293    
1294    Sml now senses the SMLNJ_HOME environment variable.  If this is set,
1295    then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
1296    CM_PATHCONFIG is also set), the path configuration file is assumed
1297    to be in $SMLNJ_HOME/lib/pathconfig.  This way one can easily move
1298    the entire tree to some other place and everything will "just work".
1299    
1300    (Companion commands such as ml-build and ml-makedepend also sense this
1301    variable.)
1302    
1303    ----------------------------------------------------------------------
1304    Name: Matthias Blume
1305    Date: 2002/07/12 21:19:00 EDT
1306    Tag: blume-20020712-liveness
1307    Description:
1308    
1309    Exported two useful "step" functions from liveness module (MLRISC).
1310    
1311    ----------------------------------------------------------------------
1312    Name: Matthias Blume
1313    Date: 2002/07/05 16:00 EDT
1314    Tag: Release_110_41
1315    Description:
1316    
1317    New working release.  New bootfiles.
1318    
1319    ----------------------------------------------------------------------
1320    Name: Matthias Blume
1321    Date: 2002/07/05 10:25:00 EDT
1322    Tag: blume-20020705-btimp
1323    Description:
1324    
1325    Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
1326    other clients can set up backtracing support.
1327    
1328    ----------------------------------------------------------------------
1329    Name: Matthias Blume
1330    Date: 2002/06/25 17:23:00 EDT
1331    Tag: blume-20020625-fpmax
1332    Description:
1333    
1334    Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
1335    case.  (The sense of the isNaN test was reversed -- which made min and
1336    max always return their first argument.)
1337    
1338    ----------------------------------------------------------------------
1339    Name: Matthias Blume
1340    Date: 2002/06/11
1341    Tag: blume-20020611-unixpath
1342    Description:
1343    
1344    Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
1345    
1346    ----------------------------------------------------------------------
1347    Name: Matthias Blume
1348    Date: 2002/06/10 16:35:00 EDT
1349    Tag: blume-20020610-ieeereal
1350    Description:
1351    
1352    I back-ported my implementation of IEEEReal.fromString from the
1353    idlbasis-devel branch so that we can test it.
1354    
1355    Another small change is that ppDec tries to give more information
1356    than just "<sig>" in the case of functors.  However, this code is
1357    broken in some mysterious way if the functor's body's signature
1358    has not been declared by ascription but gets inferred from the
1359    implementation.  This needs fixing...
1360    
1361    ----------------------------------------------------------------------
1362    Name: Matthias Blume
1363    Date: 2002/05/31
1364    Tag: blume-20020531-btrace-mode
1365    Description:
1366    
1367    Resurrected SMLofNJ.Internals.BTrace.mode.  (It accidentally fell by
1368    the wayside when I switched over to using Controls everywhere.)
1369    
1370    ----------------------------------------------------------------------
1371    Name: Lal George
1372    Date: 2002/05/23 12:21:40 EDT
1373    Tag: george-20020523-visual-labels
1374    Description:
1375    
1376    Labels are now displayed in the graphical output to make
1377    the fall-through and target blocks obvious.
1378    
1379    ----------------------------------------------------------------------
1380    Name: Matthias Blume
1381    Date: 2002/05/22 11:03:00 EDT
1382    Tag: blume-20020522-shrink
1383    Description:
1384    
1385    John tweaked yesterday's fix for 1131 to handle an out-of-memory
1386    situation that comes up when allocating huge arrays.
1387    
1388    ----------------------------------------------------------------------
1389    Name: Matthias Blume
1390    Date: 2002/05/21 16:00:00 EDT
1391    Tag: Release_110_40
1392    Description:
1393    
1394    New working release (110.40).  New bootfiles.
1395    
1396    [Also: John Reppy fixed GC bug 1131.]
1397    
1398    ----------------------------------------------------------------------
1399    Name: Matthias Blume
1400    Date: 2002/05/21 12:35:00 EDT
1401    Tag: blume-20020521-cmdoc
1402    Description:
1403    
1404    CM documentation update.
1405    
1406    ----------------------------------------------------------------------
1407    Name: Matthias Blume
1408    Date: 2002/05/21 10:55:00 EDT
1409    Tag: blume-20020521-misc
1410    Description:
1411    
1412    - John tweaked runtime to be silent on heap export (except when
1413      GC messages are on).
1414    - I added a few more things (cross-compiling versions of CMB) to
1415      config/preloads (as suggestions).
1416    
1417    ----------------------------------------------------------------------
1418    Name: Matthias Blume
1419    Date: 2002/05/20 22:25:00 EDT
1420    Tag: blume-20020520-controls
1421    Description:
1422    
1423    - Added ControlUtil structure to control-lib.cm.
1424    - Use it throughout.
1425    - Used Controls facility to define MLRISC controls (as opposed to
1426      registering MLRISC control ref cells with Controls after the fact)
1427    - Fixed messed-up controls priorities.
1428    
1429    * Removed again all the stuff from config/preloads that one wouldn't
1430      be able to preload at the time the initial heap image is built.
1431      (Many libraries, e.g., CML, do not exist yet at this time.  The
1432       only libraries that can be preloaded via config/preloads are those
1433       that come bundled with the bootfiles.)
1434    
1435    ----------------------------------------------------------------------
1436    Name: Matthias Blume
1437    Date: 2002/05/20 10:59:00 EDT
1438    Tag: blume-20020520-preloads
1439    Description:
1440    
1441    Added a lot of commented-out suggestions for things to be included
1442    in config/preloads.
1443    
1444    ----------------------------------------------------------------------
1445    Name: Allen Leung
1446    Date: 2002/05/18 14:20:00 EDT
1447    Tag: leunga-20020518-mdl
1448    Description:
1449    
1450    o Made the mdl tool stuff compile and run again.
1451    o I've disabled all the stuff that depends on RTL specifications; they
1452      are all badly broken anyway.
1453    
1454    ----------------------------------------------------------------------
1455    Name: Matthias Blume
1456    Date: 2002/05/17 16:49:00 EDT
1457    Tag: blume-20020517-controls
1458    Description:
1459    
1460    0. John Reppy made several modifications to the SML/NJ library.
1461       In particular, there is a shiny new controls-lib.cm.
1462    
1463    1. Pushed new controls interface through compiler so that everything
1464       compiles again.
1465    
1466    2. Added FormatComb and FORMAT_COMB to the CML version of the
1467       SML/NJ library (so that CML compiles again).
1468    
1469    3. Modified init scripts because XXX_DEFAULT environment variables
1470       are no longer with us.  (Boot-time initialization is now done
1471       using the same environment variables that are also used for
1472       startup-time initialization of controls.)
1473    
1474    ----------------------------------------------------------------------
1475    Name: Lal George
1476    Date: 2002/05/15 09:20:10 EDT
1477    Tag: george-20020515-pseudo-op-decls
1478    Description:
1479    
1480            All pseudo-ops emitted before the first segment declaration
1481    such as TEXT, DATA, and BSS directives are assumed to be global
1482    declarations and are emitted first in the assembly file. This is
1483    useful in a number of situations where one has pseudo-ops that are not
1484    specific to any segment, and also works around the constraint that one
1485    cannot have client pseudo-ops in the TEXT segment.
1486    
1487            Because no segment is associated with these declarations it is
1488    an error to allocate any space or objects before the first segment
1489    directive and an exception will be raised. However, we cannot make
1490    this check for client pseudo-ops.
1491    
1492            These top level declarations are a field in the CFG graph_info.
1493    In theory you can continue to add to this field after the CFG has been
1494    built -- provided you know what you are doing;-)
1495    
1496    ----------------------------------------------------------------------
1497    Name: Matthias Blume
1498    Date: 2002/05/13 16:40:00 EDT
1499    Tag: blume-20020513-pp-etc
1500    Description:
1501    
1502    A few minor bugfixes:
1503    
1504      - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
1505        (Bogus printouts for redefined bindings still occur.  Compiler
1506        bug should no longer occur now.  We need to redo the prettyprinter
1507        from scratch.)
1508    
1509      - CM pathname printer now also adds escape sequences for ( and )
1510    
1511      - commend and docu fixes for ml-nlffi
1512    
1513    ----------------------------------------------------------------------
1514    Name: Matthias Blume
1515    Date: 2002/05/10 16:40:00 EDT
1516    Tag: blume-20020510-erg-textio
1517    Description:
1518    
1519    Applied the following bugfix provided by Emden Gansner:
1520    
1521        Output is corrupted when outputSubstr is used rather than output.
1522    
1523        The problem occurs when a substring
1524    
1525            ss = (s, dataStart, dataLen)
1526    
1527        where dataStart > 0, fills a stream buffer with avail bytes left.
1528        avail bytes of s, starting at index dataStart, are copied into the
1529        buffer, the buffer is flushed, and then the remaining dataLen-avail
1530        bytes of ss are copied into the beginning of the buffer. Instead of
1531        starting this copy at index dataStart+avail in s, the current code
1532        starts the copy at index avail.
1533    
1534        Fix:
1535        In text-io-fn.sml, change line 695 from
1536             val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
1537        to
1538             val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
1539    
1540    ----------------------------------------------------------------------
1541    Name: Matthias Blume
1542    Date: 2002/04/12 13:55:00 EDT
1543    Tag: blume-20020412-assyntax
1544    Description:
1545    
1546    1. Grabbed newer assyntax.h from the XFree86 project.
1547    2. Fiddled with how to compile X86.prim.asm without warnings.
1548    3. (Very) Minor cleanup in CM.
1549    
1550    ----------------------------------------------------------------------
1551    Name: Matthias Blume
1552    Date: 2002/04/01 (no joke!) 17:07:00 EST
1553    Tag: blume-20020401-x86div
1554    Description:
1555    
1556    Added full support for div/mod/rem/quot on the x86, using the machine
1557    instruction's two results (without clumsily recomputing the remainder)
1558    directly where appropriate.
1559    
1560    Some more extensive power-of-two support was added to the x86 instruction
1561    selector (avoiding expensive divs, mods, and muls where they can be
1562    replaced with cheaper shifts and masks).  However, this sort of thing
1563    ought to be done earlier, e.g., within the CPS optimizer so that
1564    all architectures benefit from it.
1565    
1566    The compiler compiles to a fixed point, but changes might be somewhat
1567    fragile nevertheless.  Please, report any strange things that you might
1568    see wrt. div/mod/quot/rem...
1569    
1570    ----------------------------------------------------------------------
1571    Name: Matthias Blume
1572    Date: 2002/03/29 17:22:00
1573    Tag: blume-20020329-div
1574    Description:
1575    
1576    Fixed my broken div/mod logic.  Unfortunately, this means that the
1577    inline code for div/mod now has one more comparison than before.
1578    Fast paths (quotient > 0 or remainder = 0) are not affected, though.
1579    The problem was with quotient = 0, because that alone does not tell
1580    us which way the rounding went.  One then has to look at whether
1581    remainder and divisor have the same sign...  :(
1582    
1583    Anyway, I replaced the bootfiles with fresh ones...
1584    
1585    ----------------------------------------------------------------------
1586    Name: Matthias Blume
1587    Date: 2002/03/29 14:10:00 EST
1588    Tag: blume-20020329-inlprims
1589    Description:
1590    
1591    NEW BOOTFILES!!!    Version number bumped to 110.39.3.
1592    
1593    Primops have changed. This means that the bin/boot-file formats have
1594    changed as well.
1595    
1596    To make sure that there is no confusion, I made a new version.
1597    
1598    
1599    CHANGES:
1600    
1601    * removed REMT from mltree (remainder should never overflow).
1602    
1603    * added primops to deal with divisions of all flavors to the frontend
1604    
1605    * handled these primops all the way through so they map to their respective
1606      MLRISC support
1607    
1608    * used these primops in the implementation of Int, Int32, Word, Word32
1609    
1610    * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
1611    
1612    * parameterized INLMIN, INLMAX, and INLABS by a numkind
1613    
1614    * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
1615      floating point
1616    
1617    * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
1618      and Real (but Real.abs maps to a separate floating-point-only primop)
1619    
1620    
1621    TODO items:
1622    
1623    * Hacked Alpha32 instruction selection, disabling the selection of REMx
1624      instructions because the machine instruction encoder cannot handle
1625      them.  (Hppa, PPC, and Sparc instruction selection did not handle
1626      REM in the first place, and REM is supported by the x86 machine coder.)
1627    
1628    * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
1629      selection phase.  (The two can be streamlined because the hardware
1630      delivers both quotient and remainder at the same time anyway.)
1631    
1632    * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
1633      (Currently the behavior is inconsistent both across architectures and
1634      wrt. the draft Basis spec.)
1635    
1636    * Word8 should eventually be handled natively, too.
1637    
1638    * There seems to be one serious bug in mltree-gen.sml.  It appears, though,
1639      as if there currently is no execution path that could trigger it in
1640      SML/NJ.  (The assumptions underlying functions arith and promotable do not
1641      hold for things like multiplication and division.)
1642    
1643    ----------------------------------------------------------------------
1644    Name: Matthias Blume
1645    Date: 2002/03/27 16:27:00 EST
1646    Tag: blume-20020327-mlrisc-divisions
1647    Description:
1648    
1649    Added support for all four division operations (ML's div, mod, quot,
1650    and rem) to MLRISC.  In the course of doing so, I also rationalized
1651    the naming (no more annoying switch-around of DIV and QUOT), by
1652    parameterizing the operation by div_rounding_mode (which can be either
1653    DIV_TO_ZERO or DIV_TO_NEGINF).
1654    
1655    The generic MLTreeGen functor takes care of compiling all four
1656    operations down to only round-to-zero div.
1657    
1658    Missing pieces:
1659    
1660      * Doing something smarter than relying on MLTreeGen on architectures
1661        like, e.g., the x86 where hardware division delivers both quotient and
1662        remainder at the same time.  With this, the implementation of the
1663        round-to-neginf operations could be further streamlined.
1664    
1665      * Remove inlining support for div/mod/rem from the frontend and replace it
1666        with primops that get carried through to the backend.  Do this for all
1667        int and word types.
1668    
1669    ----------------------------------------------------------------------
1670    Name: Matthias Blume
1671    Date: 2002/03/25 17:25:00 EST
1672    Tag: blume-20020325-divmod
1673    Description:
1674    
1675    I improved (hopefully without breaking them) the implementation of Int.div,
1676    Int.mod, and Int.rem.   For this, the code in translate.sml now takes
1677    advantage of the following observations:
1678    
1679      Let  q = x quot y      r = x rem y
1680           d = x div  y      m = x mod y
1681    
1682    where "quot" is the round-to-zero version of integer division that
1683    hardware usually provides.  Then we have:
1684    
1685         r = x - q * y        where neither the * nor the - will overflow
1686         d = if q >= 0 orelse x = q * y then q else q - 1
1687                              where neither the * nor the - will overflow
1688         m = if q >= 0 orelse r = 0 then r else r + y
1689                              where the + will not overflow
1690    
1691    This results in substantial simplification of the generated code.
1692    The following table shows the number of CFG nodes and edges generated
1693    for
1694            fun f (x, y) = x OPER y
1695            (* with OPER \in div, mod, quot, rem *)
1696    
1697    
1698        OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
1699        --------------------------------------------------------
1700         div |         24 |         39 |         12 |         16
1701         mod |         41 |         71 |         12 |         16
1702        quot |          8 |         10 |          8 |         10
1703         rem |         10 |         14 |          8 |         10
1704    
1705    
1706    ----------------------------------------------------------------------
1707    Name: Matthias Blume
1708    Date: 2002/03/25 22:06:00 EST
1709    Tag: blume-20020325-cprotobug
1710    Description:
1711    
1712    Fixed a bug in cproto (c prototype decoder).
1713    
1714    ----------------------------------------------------------------------
1715    Name: Matthias Blume
1716    Date: 2002/03/25 16:00:00 EST
1717    Tag: blume-20020325-raw-primops
1718    Description:
1719    
1720    I did some cleanup to Allen's new primop code and
1721    replaced yesterday's bootfiles with new ones.
1722    (But they are stored in the same place.)
1723    
1724    ----------------------------------------------------------------------
1725    Name: Matthias Blume
1726    Date: 2002/03/24 22:40:00 EST
1727    Tag: blume-20020324-bootfiles
1728    Description:
1729    
1730    Made the bootfiles that Allen asked for.
1731    
1732    ----------------------------------------------------------------------
1733    Name: Allen Leung
1734    Date: 2002/03/23 15:50:00 EST
1735    Tag: leunga-20020323-flint-cps-rcc-primops
1736    Description:
1737    
1738      1. Changes to FLINT primops:
1739    
1740        (* make a call to a C-function;
1741         * The primop carries C function prototype information and specifies
1742         * which of its (ML-) arguments are floating point. C prototype
1743         * information is for use by the backend, ML information is for
1744         * use by the CPS converter. *)
1745      | RAW_CCALL of { c_proto: CTypes.c_proto,
1746                       ml_args: ccall_type list,
1747                       ml_res_opt: ccall_type option,
1748                       reentrant : bool
1749                     } option
1750       (* Allocate uninitialized storage on the heap.
1751        * The record is meant to hold short-lived C objects, i.e., they
1752        * are not ML pointers.  With the tag, the representation is
1753        * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
1754        *)
1755      | RAW_RECORD of {tag:bool,sz:int}
1756      and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
1757    
1758      2.  These CPS primops are now overloaded:
1759    
1760           rawload of {kind:numkind}
1761           rawstore of {kind:numkind}
1762    
1763          The one argument form is:
1764    
1765             rawload {kind} address
1766    
1767          The two argument form is:
1768    
1769             rawload {kind} [ml object, byte-offset]
1770    
1771      3. RAW_CCALL/RCC now takes two extra arguments:
1772    
1773         a. The first is whether the C call is reentrant, i.e., whether
1774            ML state should be saved and restored.
1775         b. The second argument is a string argument specifying the name of
1776            library and the C function.
1777    
1778         These things are currently not handled in the code generator, yet.
1779    
1780      4. In CProto,
1781    
1782         An encoding type of "bool" means "ml object" and is mapped into
1783         C prototype of PTR.  Note that "bool" is different than "string",
1784         even though "string" is also mapped into PTR, because "bool"
1785         is assigned an CPS type of BOGt, while "string" is assigned INT32t.
1786    
1787      5. Pickler/unpicker
1788    
1789         Changed to handle RAW_RECORD and newest RAW_CCALL
1790    
1791      6. MLRiscGen,
1792    
1793         1. Changed to handle the new rawload/rawstore/rawrecord operators.
1794         2. Code for handling C Calls has been moved to a new module CPSCCalls,
1795            in the file CodeGen/cpscompile/cps-c-calls.sml
1796    
1797      7. Added the conditional move operator
1798    
1799             condmove of branch
1800    
1801         to cps.  Generation of this is still buggy so it is currently
1802         disabled.
1803    
1804    ----------------------------------------------------------------------
1805  Name: Lal George  Name: Lal George
1806  Date: 2002/03/22 14:18:25 EST  Date: 2002/03/22 14:18:25 EST
1807  Tag: george-20020322-cps-branch-prob  Tag: george-20020322-cps-branch-prob

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