Home My Page Projects Code Snippets Project Openings SML/NJ
Summary Activity Forums Tracker Lists Tasks Docs Surveys News SCM Files

SCM Repository

[smlnj] Diff of /sml/trunk/HISTORY
ViewVC logotype

Diff of /sml/trunk/HISTORY

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1158, Fri Mar 22 01:21:25 2002 UTC revision 1515, Fri Jun 18 19:29:02 2004 UTC
# Line 13  Line 13 
13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume (blume (at) tti - c (dot) org)
17    Date: 2004/06/18 14:30:00 CDT
18    Tag: blume-20040618-unix
19    Description:
20    
21    Changed the implementation of structure Unix so that the same stream
22    is returned every time one of the {text,bin}{In,Out}streamOf functions
23    is invoked on the same proc.  This is not what the spec currently
24    says -- although IMO it arguably should.  (See discussion below.)
25    
26    ----------------------------------------------------------------------
27    Name: Matthias Blume (blume (at) tti - c (dot) org)
28    Date: 2004/06/17 18:15:00 CDT
29    Tag: Release_110_46
30    Description:
31    
32    New working version (110.46).  NEW BOOTFILES!
33    
34    ----------------------------------------------------------------------
35    Name: Matthias Blume (blume (at) tti - c (dot) org)
36    Date: 2004/06/17 17:20:00 CDT
37    Tag: blume-20040617-timer-unix
38    Description:
39    
40    Changed the interface of structures Timer and Unix to match the most
41    recent Basis spec.
42    
43    In the case of Unix there still seems to be an open/weird issue:
44    
45       The {text,bin}{In,Out}streamOf functions are supposed to create
46       fresh streams whenever they are called -- as opposed to have them
47       return the same stream every time.  This design is supposed to
48       prevent space leaks caused by proc values hanging on to streams.
49    
50       The reap function, on the other hand, is supposed to close the
51       streams.  This cannot be done without having a handle on the
52       stream in proc after all...
53    
54    I took the liberty to implement the following stopgap solution:
55    
56      The proc value hangs on to the most recently created stream(s).
57      Reap closes those.  If either or both of the two streams hadn't
58      been created at all yet, then reap will close the corresponding
59      file descriptors directly.
60    
61    PS: I don't understand the original space leak argument anymore.  If
62    a proc hangs on to the imperative stream, then I/O operations on those
63    will advance the state of the cached stream and avoid the space leak.
64    
65    ----------------------------------------------------------------------
66    Name: Matthias Blume (blume (at) tti - c (dot) org)
67    Date: 2004/05/28 16:45:00 CDT
68    Tag: blume-20040528-basis
69    Description:
70    
71    Added signature PACK_REAL and exported functor PrimIO.
72    
73    ----------------------------------------------------------------------
74    Name: Matthias Blume (blume (at) tti - c (dot) org)
75    Date: 2004/05/25 16:00:00 CDT
76    Tag: blume-20040525-group-owner
77    Description:
78    
79    CM now ignores (but still accepts) the "owner" information in group
80    descriptions.  The owner of a group is its next enclosing
81    library. Each group must have a unique owner.  (There is a virtual
82    "toplevel" library that owns groups which are not nested within a real
83    library.)  Previously, each group had to explicitly declare its owner,
84    and CM would check that such a declaration is correct.  The new scheme
85    is to have CM check that for each group there is precisely one owning
86    library.
87    
88    The advantage of the new scheme is that the programmer no longer needs
89    to maintain the somewhat annoying owner information.  The downside is
90    that CM cannot enforce the ownership rule across multiple runs of
91    CM.make.  Fortunately, enclosing the same group in two different
92    libraries A and B which are not part of the same program does not
93    cause real problems.
94    
95    ----------------------------------------------------------------------
96    Name: Matthias Blume (blume (at) tti - c (dot) org)
97    Date: 2004/05/20 16:00:00 CDT
98    Tag: blume-20040520-win32
99    Description:
100    
101    Made the win32 version work again.  (Strangely, a misplaced comma had
102    slipped into win32-process.c which prevented the runtime from being
103    compiled correctly.)
104    
105    Also, included a minor addition to ml-build.bat analogous to what was
106    done in blume-20040519-ml-build.
107    
108    ----------------------------------------------------------------------
109    Name: Matthias Blume (blume (at) tti - c (dot) org)
110    Date: 2004/05/19 22:10:00 CDT
111    Tag: blume-20040519-ml-build
112    Description:
113    
114    Arranged for ml-build to clean up after itself a little bit better.
115    The script generates a temporary SML source file and compiles it using
116    CM, so CM generates metadata (GUID, SKEL, objectfile) for it.  It now
117    gets rid of those at the end, so they don't accumulate under .cm.
118    
119    This required a minor change to install.sh because the name of the
120    metadata directory (default: .cm) is actually configurable at
121    installation time.
122    
123    ----------------------------------------------------------------------
124    Name: Matthias Blume (blume (at) tti - c (dot) org)
125    Date: 2004/05/18 15:50:00 CDT
126    Tag: blume-20040518-mkreader
127    Description:
128    
129    Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
130    implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
131    
132    ----------------------------------------------------------------------
133    Name: Matthias Blume (blume (at) tti - c (dot) org)
134    Date: 2004/05/11 14:35:00 CDT
135    Tag: blume-20040511-win32sock
136    Description:
137    
138    Added previously missing support for many socket-related functions
139    under win32.  Thanks to David Hansel <hansel@reactive-systems.com>
140    for the voluminous patch!
141    
142    (I have not tested this patch under win32 yet.)
143    
144    Here is David's e-mail:
145    
146    Hi,
147    
148    Attached to this email you find a diff against sml/nj 110.45
149    that will enable socket support under Windows.
150    
151    To apply the patch (using unix or cygwin)
152    1) gunzip runtime.diff.gz
153    2) "cd" into "src/runtime" in the source tree of a fresh
154       110.45 installation.
155    3) patch -p 1 < [your/path/to]runtime.diff
156    
157    The code compiles fine but has NOT yet been extensively tested.
158    I only ran a few tests for basic socket client functionality
159    (which worked fine).  Especially the functions that use ioctl
160    are not tested at all and might not work (see below).
161    
162    I implemented this since we want to move to a newer version of sml/nj
163    but need socket support in order to use it.  This is the first time I
164    even had a look at the sml/nj source,  so please review my changes
165    before making this part of the distribution!  Here are a few issues
166    that I think might be better for someone to solve who is more
167    familiar with the sml/nj source (and socket programming):
168    
169    - getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
170      exception since I could not figure out what the windows equivalent
171      of these functions is
172    
173    - In sockets-osdep.h there are a some #include statements that are
174      only used in a few files that include sockets-osdep.h
175    
176    - In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
177      does not process its return value since I don't know how to
178      report an error upwards.
179    
180    - It would probably be good to have a call to WSACleanup() when
181      the library is unloaded (if there is such a possibility).
182      Otherwise I think Windows will take care of this automatically
183      when the process finishes.
184    
185    - I used ioctlsocket() as a replacement for ioctl() but I have
186      no idea if that is actually the proper replacement on Windows.
187    
188    - All these issues are marked in the code by "FIXME" comments.
189    
190    We use sml/nj extensively in our products and are quite happy
191    with it.  I hope this contribution will help you.
192    
193    Keep up the good work!
194    
195    David
196    
197    ----------------------------------------------------------------------
198    Name: Matthias Blume (blume (at) tti - c (dot) org)
199    Date: 2004/05/11 14:20:00 CDT
200    Tag: blume-20040511-installml
201    Description:
202    
203    Fixed two bugs in installml script.  (Thanks to Vesa A. Norrman for
204    the patch.)
205    
206    ----------------------------------------------------------------------
207    Name: Matthias Blume (blume (at) tti - c (dot) org)
208    Date: 2004/05/11 14:05:00 CDT
209    Tag: blume-20040511-nlffi-netbsd
210    Description:
211    
212    Added support for nlffi under netbsd.  (Thanks to Vesa A. Norrman for
213    the patch.)
214    
215    ----------------------------------------------------------------------
216    Name: Matthias Blume (blume (at) tti - c (dot) org)
217    Date: 2004/05/11 12:05:00 CDT
218    Tag: blume-20040511-exports
219    Description:
220    
221    As per request by Adam Chlipala <adam@hcoop.net>, extended various
222    export lists in compiler-related .cm-files.
223    
224    ----------------------------------------------------------------------
225    Name: Matthias Blume (blume (at) tti - c (dot) org)
226    Date: 2004/05/11 11:35:00 CDT
227    Tag: blume-20040511-allsource
228    Description:
229    
230    The installer now honors the "src-smlnj" target again, although its meaning
231    has changed from "all sources required for the compiler" to "all sources
232    the installer knows about".  In other words, if you enable "src-smlnj"
233    in the "targets" file, then the installer will pull in sources for
234    everything.  (Notice that this refers to source code only.  Compiled
235    code is still only installed for modules that were requested explicitly
236    or which are required for other modules that were requested explicitly.)
237    
238    ----------------------------------------------------------------------
239    Name: Matthias Blume (blume (at) tti - c (dot) org)
240    Date: 2004/04/23 17:40:00 CDT
241    Tag: blume-20040423-ieee-scan
242    Description:
243    
244    Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
245    in the exponent calculation we get INF or ZERO (depending on the mantissa
246    and the sign of the exponent).
247    
248    ----------------------------------------------------------------------
249    Name: Matthias Blume (blume (at) tti - c (dot) org)
250    Date: 2004/04/23 10:40:00 CDT
251    Tag: blume-20040423-ml-build
252    Description:
253    
254    The ml-build script now terminates with a non-0 status when something
255    goes wrong.
256    
257    ----------------------------------------------------------------------
258    Name: Matthias Blume (blume (at) tti - c (dot) org)
259    Date: 2004/04/22 16:35:00 CDT
260    Tag: blume-20040422-Option
261    Description:
262    
263    Made exception Option to be the same as exception Option.Option
264    (as it should be).
265    
266    ----------------------------------------------------------------------
267    Name: Allen Leung (leunga (at) reservoir (dot) com)
268    Date: 2004/03/19 14:40:00 EST
269    Tag: leunga-20040319-cygwin-nlffi
270    Description:
271    
272    Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
273    of SML/NJ.  The problem is that
274    
275       lib = dlopen(NULL, ...)
276       f   = dlsym(lib, "malloc");
277    
278    does not work on Windows unless we explicitly export symbols
279    such as 'malloc' during linking.  We fixed this by explicitly
280    exporting the required symbols with the magic gcc incantation:
281    
282        -Wl,--export-all cygwin.def
283    
284    where cygwin.def is a file containing all the symbols that
285    we wish to export.
286    
287    I suspect this is a Windows problem and we'll have to
288    do the same (somehow with windows compilers) when
289    we build the native win32 version with the system
290    calls LoadLibrary/GetProcAddress.
291    
292    ----------------------------------------------------------------------
293    Name: Matthias Blume (blume (at) tti - c (dot) org)
294    Date: 2004/03/04 16:35:00 CST
295    Tag: blume-20040304-intinf-fmt
296    Description:
297    
298    Fixed problem with IntInf.fmt (sign would show up on the right instead
299    of on the left for BIN, OCT, and HEX).
300    
301    ----------------------------------------------------------------------
302    Name: Matthias Blume (blume (at) tti - c (dot) org)
303    Date: 2004/03/04 11:25:00 CST
304    Tag: blume-20040304-symlinks
305    Description:
306    
307    Fixed problem with installer script (unix only) where bin/ml-yacc and
308    friends pointed (via symlinks) to absolute locations instead of just
309    .run-sml.  This was reported by Vesa A Norrman.
310    
311    ----------------------------------------------------------------------
312    Name: Matthias Blume (blume (at) tti - c (dot) org)
313    Date: 2004/02/13 14:50:00 CST
314    Tag: Release_110_45
315    Description:
316    
317    New working version (110.45). New bootfiles.
318    
319    ----------------------------------------------------------------------
320    Name: Matthias Blume (blume (at) tti - c (dot) org)
321    Date: 2004/01/26 15:15:15 CST
322    Tag: blume-20040126-toplevel
323    Description:
324    
325    Improved handling of exceptions at the interactive toplevel.
326    
327    ----------------------------------------------------------------------
328    Name: Matthias Blume (blume (at) tti - c (dot) org)
329    Date: 2004/01/26 11:25:00
330    Tag: blume-20040126-app
331    Description:
332    
333    Type of top-level "app" corrected.
334    Added code for setting vp_limitPtrMask to Win32-specific runtime.
335    
336    ----------------------------------------------------------------------
337    Name: Matthias Blume (blume (at) tti - c (dot) org)
338    Date: 2003/11/18 17:10 CST
339    Tag: blume-20031118-basis-fiddle
340    Description:
341    
342    - changed Timer interface to what might become the spec
343    - POSIX_FLAGS -> BIT_FLAGS according to spec
344    - some other minor discrepancies wrt. spec eliminated
345    
346    ----------------------------------------------------------------------
347    Name: Matthias Blume (blume (at) tti - c (dot) org)
348    Date: 2003/11/06 12:00:00 CST
349    Tag: Release_110_44
350    Description:
351    
352    New working version (110.44). New bootfiles.
353    
354    ----------------------------------------------------------------------
355    Name: Matthias Blume (blume (at) tti - c (dot) org)
356    Date: 2003/11/04 11:50:00 CST
357    Tag: blume-20031104-move-libraries
358    Description:
359    
360    Eliminated the "dont_move_libraries" directive in config/targets.
361    (The mechanism was broken and could not be fixed easily.  Moreover,
362    there does not seem to be any reason not to move all libraries into
363    lib during installation.  I originally implemented this directive as a
364    backward-compatibility feature when I first introduced the new CM.
365    Now that things have been stable for a long time and going back to the
366    old CM is not an option, there is no reason to keep it around.)
367    
368    ----------------------------------------------------------------------
369    Name: Matthias Blume (blume (at) tti - c (dot) org)
370    Date: 2003/11/03 16:00:00 CST
371    Tag: blume-20031103-installdir
372    Description:
373    
374    Made installer honor INSTALLDIR variable again.  (Thanks to Chris
375    Richards for pointing out the problem and providing the solution.)
376    
377    ----------------------------------------------------------------------
378    Name: Matthias Blume (blume (at) tti - c (dot) org)
379    Date: 2003/10/01 17:05:00 CDT
380    Tag: blume-20031001-lal-mlrisc
381    Description:
382    
383    MLRISC bug fix from Lal.
384    
385    ----------------------------------------------------------------------
386    Name: Matthias Blume (blume (at) tti - c (dot) org)
387    Date: 2003/09/30 16:10:00 CDT
388    Tag: blume-20030930-primio-bat
389    Description:
390    
391    1. Added openVector, nullRd, and nullWr to PRIM_IO.
392    2. Improved .bat files (for Win32 port) to make things work under Win95.
393       (thanks to Aaron S. Hawley for this one)
394    
395    ----------------------------------------------------------------------
396    Name: Matthias Blume (blume (at) tti - c (dot) org)
397    Date: 2003/09/26 16:05:00 CDT
398    Tag: blume-20030926-wrappriv
399    Description:
400    
401    Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
402    
403    ----------------------------------------------------------------------
404    Name: Matthias Blume (blume (at) tti - c (dot) org)
405    Date: 2003/09/26 15:00:00 CDT
406    Tag: blume-20030926-110_43_3
407    Description:
408    
409    - additional cleanup
410    - version number bump, NEW BOOTFILES
411    
412    ----------------------------------------------------------------------
413    Name: Matthias Blume (blume (at) tti - c (dot) org)
414    Date: 2003/09/26 12:00:00 CDT
415    Tag: blume-20030926-ppautoload
416    Description:
417    
418    I modified the read-eval-print loop so that the autoloader gets
419    invoked whenever the prettyprinter tries to look up a symbol that
420    is not currently defined in the toplevel environment but which
421    appears in CM's autoload registry.  As a result, we see far fewer of
422    those ?.Foo.Bar.xxx names in the prettyprinter's output.
423    
424    In addition to this I tried to clean up some pieces of the Basis
425    implementation (e.g., Socket, Word8Array) in order to prevent other
426    instances of these ?.Foo.Bar.xxx names from being printed.
427    
428    The mechanism that picks names for types still needs some work, though.
429    (Right now it seems that if there is a type A.t which is defined to
430    be B.u, but B is unavailable at toplevel, then A.t gets printed as
431    "?.B.u" although the perhaps more sensible solution would be to use
432    "A.t" in this case.  In other words, the prettyprinter should follow
433    a chain of DEFtycs not farther than there are corresponding toplevel
434    names in the current environment.)
435    
436    ----------------------------------------------------------------------
437    Name: Matthias Blume (blume (at) tti - c (dot) org)
438    Date: 2003/09/24 16:31:00 CDT
439    Tag: blume-20030924-installer
440    Description:
441    
442    Another installer tweak:  All the ML code for the installer is now
443    compiled during CMB.make and put into a little library called
444    $smlnj/installer.cm.  The installation then simply invokes
445    
446       sml -m $smlnj/installer.cm
447    
448    and everything happens automagically.
449    
450    Win32:  ML code senses value of environment variable SMLNJ_HOME.
451    Unix:   ML code senses values of environment variables ROOT, CONFIGDIR,
452            and BINDIR.
453    
454    The new scheme guarantees that the ML code responsible for the installation
455    is in sync with the APIs of the main system.  Also, the installer is
456    somewhat faster because the installer script is precompiled.
457    
458    ----------------------------------------------------------------------
459    Name: Matthias Blume (blume (at) tti - c (dot) org)
460    Date: 2003/09/24 15:35:00 CDT
461    Tag: blume-20030924-synsock
462    Description:
463    
464    Added a signature SYNCHRONOUS_SOCKET to basis.cm.  This is like SOCKET
465    but excludes all non-blocking operations.  Defined SOCKET (in Basis)
466    and CML_SOCKET in terms of SYNCHRONOUS_SOCKET.  Removed superfluous
467    implementations of non-blocking operations from CML's Socket
468    structure.
469    
470    ----------------------------------------------------------------------
471    Name: Matthias Blume (blume (at) tti - c (dot) org)
472    Date: 2003/09/24 15:10:05 CDT
473    Tag: blume-20030924-sockets
474    Description:
475    
476    1. Fixed SOCKET API and implementation to match Basis spec.
477       This required changing the internal representation of sockets to one
478       that remembers (for each socket file descriptor) whether it is currently
479       blocking or non-blocking.  This state is maintained lazily (i.e., a system
480       call is made only if the state actually needs to change).
481    
482    2. OS-specific details of sockets were moved into separate files, thus
483       making it possible to unify the bulk of the socket implementations
484       between Unix and Win32.
485    
486    3. CML's socket API changed accordingly.
487       (Note that we need to remove non-blocking functions from this API
488       since they are redundant in the case of CML!)
489    
490    4. CML's socket implementation now makes use of non-blocking functions
491       provided by Basis, thus removing all OS-dependent code from this part
492       of CML.
493    
494    5. Changed Real64.precision from 52 to 53.  Minor cleanup in Real64 code.
495    
496    ----------------------------------------------------------------------
497    Name: Matthias Blume (blume (at) tti - c (dot) org)
498    Date: 2003/09/22 12:10:00 CDT
499    Tag: blume-20030922-110_43_2
500    Description:
501    
502    Made a new interim version and bootfiles for developer's bootstrapping
503    convenience.
504    
505       110.43.2 -- NEW BOOTFILES
506    
507    ----------------------------------------------------------------------
508    Name: Matthias Blume (blume (at) tti - c (dot) org)
509    Date: 2003/09/19 15:55:00 CDT
510    Tag: blume-20030919-cmdir
511    Description:
512    
513    1. new-install.sh -> install.sh
514    2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
515    3. tweaked installer so that another name instead of .cm can be chosen
516       at install time (by setting the CM_DIR_ARC environment variable
517       during installation); once installation is complete, the name is
518       fixed
519    
520    ----------------------------------------------------------------------
521    Name: Matthias Blume (blume (at) tti - c (dot) org)
522    Date: 2003/09/18 16:00:00 CDT
523    Tag: blume-20030918-110_43_1
524    Description:
525    
526    Made a new interim version and bootfiles for developer's bootstrapping
527    convenience.
528    
529       110.43.1 -- NEW BOOTFILES
530    
531    ----------------------------------------------------------------------
532    Name: Matthias Blume (blume (at) tti - c (dot) org)
533    Date: 2003/09/18 15:20:00 CDT
534    Tag: blume-20030918-misc
535    Description:
536    
537    1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
538       this seems to be controversial at the moment) and used those in
539       Posix.ProcEnv.times.
540    
541    2. Added Time.{from,to}Nanoseconds to Time.
542    
543    3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
544       For example, fromLargeInt never needs to look at more than 3 "big
545       digits" to get its 53 bits of precision.
546    
547    ----------------------------------------------------------------------
548    Name: Matthias Blume (blume (at) tti - c (dot) org)
549    Date: 2003/09/17 16:30:00 CDT
550    Tag: blume-20030917-real32-slices
551    Description:
552    
553    Added an entry to the primitive environment
554    (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
555    added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
556    
557    Removed some of the "magic" constants in real64.sml and replaced them
558    with code that generates these values from their corresponding
559    integer counterparts.
560    
561    Made all(?) the slice-related changes to the Basis and made everything
562    compile again...
563    
564    ----------------------------------------------------------------------
565    Name: Matthias Blume (blume (at) tti - c (dot) org)
566    Date: 2003/09/15 17:45:00 CDT
567    Tag: blume-20030915-rbase
568    Description:
569    
570    Fixed bug in Real.fromLargeInt.
571    
572    ----------------------------------------------------------------------
573    Name: Matthias Blume (blume (at) tti - c (dot) org)
574    Date: 2003/09/13 18:11:00 CDT
575    Tag: blume-20030913-libinstall
576    Description:
577    
578    Minor bugfix in config/libinstall (set anchor with path to
579    standalone tool after installing it, otherwise libraries that
580    need ml-lex or ml-yacc won't compile the first time the installer
581    runs).
582    
583    ----------------------------------------------------------------------
584    Name: Matthias Blume (blume (at) tti - c (dot) org)
585    Date: 2003/09/12 11:45:00 CDT
586    Tag: blume-20030912-various
587    Description:
588    
589     - fixed bug in Real.toLargeInt
590     - fixed bug in Posix.ProcEnv.times
591     - changed inputLine functions to return an option
592     - minor installer improvements / bugfixes
593     - changed default @SMLalloc parameter for x86/celeron to 64k
594    
595    ----------------------------------------------------------------------
596    Name: Matthias Blume (blume (at) tti - c (dot) org)
597    Date: 2003/09/09 22:00:00 CDT
598    Tag: Release_110_43
599    Description:
600    
601        New working release 110.43.  New bootfiles.
602    
603    ----------------------------------------------------------------------
604    Name: Matthias Blume (blume (at) tti - c (dot) org)
605    Date: 2003/09/09 19:20:00 CDT
606    Tag: blume-20030909-installer
607    Description:
608    
609    Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
610    Modified config/install.bat to take advantage of it.  Also modified
611    config/install.sh (and called it config/new-install.sh) to take advantage
612    of it on Unix systems.  (The SML code is (supposed to be) platform-
613    independent.)
614    
615    The installer can now install everything under Win32
616    as well as under *nix as long as it compiles.
617    
618    Other changes:
619    
620      - made CML compile again under Win32
621      - made eXene compile under Win32 (by providing a fake structure UnixSock
622        and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
623      - fixed a bug in nowhere: it assumed that type OS.Process.status is the
624        same as type int;  under Win32 it isn't
625      - fixed some slice-related problems in the win32-specific parts of CML
626      - added a functor argument "sameVol" to os-path-fn.sml in the Basis
627        (under Win32, the volume name is case-insensitive, and the
628        OS.Path code compares volume names for equality)
629    
630    ----------------------------------------------------------------------
631    Name: Matthias Blume (blume (at) tti - c (dot) org)
632    Date: 2003/09/08 11:55:00 CDT
633    Tag: blume-20030908-fullpath
634    Description:
635    
636    Made Win32 version of OS.FileSys.fullPath return current directory
637    when given an empty string.  This is what the spec says, and incidentally,
638    CM depends on it.  (CM otherwise goes into an infinite loop in certain
639    cases when presented with the name of a non-existing .cm file.)
640    
641    ----------------------------------------------------------------------
642    Name: Matthias Blume (blume (at) tti - c (dot) org)
643    Date: 2003/09/04 16:30:00 CDT
644    Tag: blume-20030905-slices-etc
645    Description:
646    
647      1. Changed interface to vectors and arrays in Basis to match
648         (draft) Basis spec.
649      2. Added signatures and implementations of slices according to
650         Basis spec.
651      3. Edited source code throughout the system to make it compile again
652         under 1. and 2.  (In some cases code had to be added to have it
653         match the new signatures.)
654      4. MLRISC should be backward-compatible: the copies of the originals
655         of files that needed to change under 3. were retained, the .cm files
656         check the compiler version number and use old versions when
657         appropriate.
658      5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
659         dirstream -> string option (in accordance with Basis spec).
660      6. When generating code that counts lines, ml-lex used function
661         CharVector.foldli, taking advantage of its old interface.
662         This has been replaced with the corresponding code from
663         CharVectorSlice.  (html-lex must be re-lexed!)
664      7. BitArray in smlnj-lib/Util has been extended/modified to match the
665         new MONO_ARRAY signature.  (Do we need BitArraySlice?)
666      8. Removed temporary additions (fromInternal, toInternal) from the
667         (now obsolete) IntInf in smlnj-lib/Util.
668      9. Cleaned up structure Byte.
669     10. Added localOffset, scan, and fromString to Date (according to spec).
670         Cleaned/corrected implementation of Date.
671         (Still need to check for correctness; implement better canonicalizeDate.)
672     11. Added "scan" to signature IEEE_REAL.
673     12. Some improvements to IntInf [in particular: efficiency-hack for
674         mod and rem when second operand is 2 (for parity checks).]
675     13. Changed representation of type Time.time, using a single IntInf.int
676         value counting microseconds.  This considerably simplified the
677         implementation of structure Time.  We now support negative time
678         values; scan and fromString handle signs.
679     14. Functor PrimIO now takes two additional arguments (VectorSlice and
680         ArraySlice).
681    
682    ----------------------------------------------------------------------
683    Name: Matthias Blume (blume (at) tti - c (dot) org)
684    Date: 2003/08/28 17:00:00 CDT
685    Tag: blume-20030828-intinf
686    Description:
687    
688    This is a major update which comes with a version number bump
689    (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
690    and an implementation of IntInf in the Basis.
691    
692    There are a fairly large number of related changes and updates throughout
693    the system:
694    
695    Basis:
696            - Implemented IntInf.
697            - Made LargeInt a projection of IntInf (by filtering through INTEGER).
698            - Added some missing Real64 operations, most notably Real.toLargeInt.
699            - Added FixedInt as a synonym for Int32.
700    
701    compiler:
702            * Added support for a built-in intinf type.
703              - literals
704              - pattern matching
705              - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
706              - overloading on literals and operations
707    
708            This required adding a primitive type intinf, some additional
709            primops, and implementations for several non-trivial intinf
710            operations in Core.  (The intinf type is completely abstract
711            to the compiler; all operations get delegated back to the Core.)
712    
713            * Intinf equality is handled by polyequal.  However, the compiler
714            does not print its usual warning in this case (since polyequal
715            is the right thing to do there).
716    
717            * Improved the organization of structure InlineT.
718    
719            * A word about conversion primops:
720            If conversions involving intinf do not cancel out during
721            CPS contract, then the compiler must insert calls to Core functions.
722            Since all core access must be resolved already during the FLINT
723            translate phase, it would be too late a the time of CPS contract
724            to add new Core calls.  For this reason, conversion primops
725            for intinf carry two arguments:  1. the numeric argument that
726            they are supposed to convert, and 2. the Core function that
727            can help with this conversion if necessary.  If CPS contract
728            eliminates a primop, then the associated Core function becomes
729            dead and goes away.  Intinf conversion primops that do not get
730            eliminated by CPS contract get rewritten into calls of their
731            core functions by a separate, new phase.
732    
733    interactive system:
734            - Control.Print.intinfDepth controls max length of intinf constants
735            being printed. (Analogous to Control.Print.stringDepth.)
736            - Cleanup in printutil and pputil: got rid of unused stuff and
737            duplicates; replaced some of the code with code that makes better
738            use of library functionality.
739    
740    CM:
741            Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
742            are no longer silent.
743    
744    CKIT:
745            Fixed mismatched uses of Int32 and LargeInt.  I always decided
746            in favor of LargeInt -- which is now the same as IntInf.
747            CKIT-knowledgable people should check whether this is what's
748            intended and otherwise change things back to using Int32 or
749            FixedInt.
750    
751    Throughout the code:
752            Started using IntInf.int literals and built-in operations
753            (e.g., comparison with 0) where this seems appropriate.
754    
755    
756    ----------------------------------------------------------------------
757    Name: Dave MacQueen (dbm@cs.uchicago.edu)
758    Date: 2003/08/13 11:36:00 CDT
759    Tag: dbm-20030813-mcz-merge1
760    Description:
761    
762    Merging changes from the mcz-branch development branch into trunk.
763    These changes involve replacement of the emulated old prettyprinter
764    interface with direct use of the SML/NJ Lib PP library, and fixing
765    of a couple of bugs (895, 1186) relating to error messages.  A new
766    prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
767    has been added.
768    
769    ----------------------------------------------------------------------
770    Name: Matthias Blume (blume (at) tti - c (dot) org)
771    Date: 2003/08/11 15:45:00 CDT
772    Tag: blume-20030811-windows
773    Description:
774    
775    Version number bumped to 110.42.9.  NEW BOOTFILES!!!
776    
777        http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
778    
779    This patch restores SML/NJ's ability to run under win32.  There are a
780    number of changes, including fixes for several bugs that had gone
781    unnoticed until now:
782    
783      - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
784        trying to run the win32 version from within cygwin.)
785    
786      - There are a number of simple .bat scripts that substitute for their
787        corresponding Unix shell-scripts.  (See below.)
788    
789      - The internals of ml-build have been modified slightly.  The main
790        difference is that instead of calling ".link-sml" (or link-sml.bat)
791        using OS.Process.system, the ML process delegates this task back
792        to the script.  Otherwise problems arise in mixed environments such
793        as Cygwin where scripts look and work like Unix scripts, but
794        where OS.Process.system cannot run them.
795    
796      - In CM, the srcpath pickler used native pathname syntax -- which
797        is incorrect in the case of cross-compilation.  The new pickle format
798        is independent of platform-specific naming conventions.
799    
800      - Path configuration files (such as lib/pathconfig) can now choose
801        between native and standard syntax.  Placing a line of the form
802    
803            standard!
804    
805        into the file causes all subsequent paths to be interpreted using
806        CM standard pathname syntax (= Unix conventions); a line
807    
808            native!
809    
810        switches back to native style.  This was needed so that
811        path config files can be written portably, see src/system/pathconfig.
812    
813      - Runtime system:
814    
815          - win32-filesys.c:  get_file_time and set_file_time now
816            access modification time, not creation time.
817    
818          - I/O code made aware of new array representation.
819    
820          - Bug fixes in X86.prim.masm.
821    
822       - src/system/makeml made aware of win32. (For use under cygwin
823            and other Unix-environments for windows.)
824    
825       - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
826         which caused BinIO.inputAll to fail consistently.
827    
828    .bat scripts:
829    
830       Windows .bat scripts assume that SMLNJ_HOME is defined.
831    
832       - sml.bat, ml-yacc.bat, ml-lex.bat:  Driver scripts for standalone
833         applications (sml, ml-yacc, ml-lex).
834       - ml-build.bat: analogous to ml-build.
835       - config\install.bat:  Analogous to config/install.sh.  This requires
836         that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
837         (nmake etc. must be on the path, and vcvars32 must have been run.)
838         Moreover, sources for ml-lex and ml-yacc need to exist under src,
839         and the bootfile hierarchy must have been unpacked under
840         sml.boot.x86-win32.
841         The script is very primitive and does a poor job at error checking.
842         It only installs the base system, ml-lex, and ml-yacc.  No other
843         libraries are being installed (i.e., you get only those that
844         are part of the compiler.)
845       - link-sml.bat:  analogous to .link-sml, but not currently used
846    
847    Unrelated bug fixes:
848    
849      - ml-nlffigen now exports structures ST_* corresponding to incomplete
850        types.
851      - Added getDevice to PP/src/pp-debug-fn.sml.  (Would not compile
852        otherwise.)
853    
854    ----------------------------------------------------------------------
855    Name: Dave MacQueen (macqueen@cs.uchicago.edu)
856    Date: 2003/06/17
857    Tag: macqueen-20030617-bug895
858    Description:
859    
860    Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
861    Tag will be used for new development branch (mcz-branch) for
862    use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
863    
864    ----------------------------------------------------------------------
865    Name: Matthias Blume (blume (at) tti - c (dot) org)
866    Date: 2003/05/27 16:55:00 CDT
867    Tag: blume-20030527-polyeq
868    Description:
869    
870    Tried to eliminated most cases of polymorphic equality.
871    
872    ----------------------------------------------------------------------
873    Name: Matthias Blume (blume (at) tti - c (dot) org)
874    Date: 2003/05/21 17:45:00 CDT
875    Tag: blume-20030517-complete
876    Description:
877    
878    Two changes:
879    
880      1. Added a flag for controlling whether non-exhaustive bindings will
881         be treated as errors (default is false).
882      2. Cleaned up the *entire* source tree so that CMB.make goes through
883         without a single non-exhaustive match- or bind warning.
884    
885    ----------------------------------------------------------------------
886    Name: Matthias Blume (blume (at) tti - c (dot) org)
887    Date: 2003/05/17 10:20:00 CDT
888    Tag: blume-20030517-absyn
889    Description:
890    
891    1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
892    
893       This mainly affects the quality of error messages.  However, some
894       of the code is now more straightforward than before. (Treatment of
895       the above four constructs in translate.sml is much simpler than
896       the "macro-expansion" that was going on before.  Plus, the mach-
897       compiler no longer gets invoked just to be able to compile an
898       if-expression.)
899    
900    2. The ErrorMsg.Error exception is now caught and absorbed by the
901       interactive loop.
902    
903    ----------------------------------------------------------------------
904    Name: Allen Leung
905    Date: 2003/05/16 13:05:00 CDT
906    Tag: leunga-20030516-cygwin-runtime
907    Description:
908    
909        Ported the runtime system to cygwin, which uses the unix
910    x86-unix bin files.  Missing/buggy features:
911    
912       o getnetbyname, getnetbyaddr: these functions seem to be missing in
913         the Cygwin library.
914       o Ctrl-C handling may be flaky.
915       o Windows system calls and Windows I/O are not supported.
916    
917       A new set of binfiles is located at:
918    
919         http://www.dorsai.org/~leunga/boot.x86-unix.tgz
920    
921       This is only needed for bootstrapping the cygwin version of smlnj.
922       Other x86 versions can use the existing binfiles.
923    
924    ----------------------------------------------------------------------
925    Name: Matthias Blume
926    Date: 2003/04/08 15:42:00 CDT
927    Tag: blume-20030408-listpair
928    Description:
929    
930    1. Added a target 'mlrisc' to installer.
931    
932    2. Added missing elements to structure ListPair.
933    
934    ----------------------------------------------------------------------
935    Name: Allen Leung
936    Date: 2003/01/07 10:40:00 EST
937    Tag: leunga-20030107-int-rem
938    Description:
939    
940    Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
941    The arguments to the SUBL instruction were swapped.
942    
943    ----------------------------------------------------------------------
944    Name: Matthias Blume
945    Date: 2002/12/12 16:25:00 EST
946    Tag: blume-20021212-risc-ra
947    Description:
948    
949    Fixed a serious bug in the rewrite code for FP spilling/reloading that
950    sent the RA into an infinite loop when floating point registers get
951    spilled.  (Because of this bug, e.g., nucleic stopped compiling between
952    110.37 and 110.38.)
953    There was another set of potential problems related to the handling of
954    MLRISC annotations (but those did not yet cause real problems, apparently).
955    
956    ----------------------------------------------------------------------
957    Name: Matthias Blume
958    Date: 2002/12/06 22:40:00 EST
959    Tag: blume-20021206-cm-fileid
960    Description:
961    
962    Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
963    This fixes the problem of CM getting confused by files that suddenly
964    change their identity (e.g., by getting unlinked and recreated by some
965    text editor such as vi).  There might be a better/cheaper/cleaner way
966    of doing this, but for now this will have to do.
967    
968    ----------------------------------------------------------------------
969    Name: Matthias Blume
970    Date: 2002/10/28 09:50:00 EST
971    Tag: blume-20021028-typecheck
972    Description:
973    
974    Exported structure Typecheck from $smlnj/viscomp/core.cm.
975    
976    ----------------------------------------------------------------------
977    Name: Matthias Blume
978    Date: 2002/10/17 09:10:00 EDT
979    Tag: Release_110_42
980    Description:
981    
982    In good old tradition, there has been a slight hiccup so that we have
983    to patch 110.42 after the fact.   The old release tag has been replaced
984    (see below).
985    
986    The change solves a problem with two competing approaches the
987    configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
988    each other's way.
989    
990    This change only affects the runtime system code and the installer script.
991    (No new bootfiles.)
992    
993    ----------------------------------------------------------------------
994    Name: Matthias Blume
995    Date: 2002/10/16 12:00:00 EDT
996    Tag: Release_110_42_removed
997    Description:
998    
999    New working release.  New bootfiles.
1000    
1001    ----------------------------------------------------------------------
1002    Name: Matthias Blume
1003    Date: 2002/10/10 13:10:00 EDT
1004    Tag: blume-20021010-ppc-divs
1005    Description:
1006    
1007    The mltree operator DIVS must be implemented with an overflow check on
1008    the PPC because the hardware indicates divide-by-zero using "overflow" as
1009    well.
1010    
1011    ----------------------------------------------------------------------
1012    Name: Matthias Blume
1013    Date: 2002/07/23 11:45:00
1014    Tag: blume-20020723-smlnj-home
1015    Description:
1016    
1017    Sml now senses the SMLNJ_HOME environment variable.  If this is set,
1018    then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
1019    CM_PATHCONFIG is also set), the path configuration file is assumed
1020    to be in $SMLNJ_HOME/lib/pathconfig.  This way one can easily move
1021    the entire tree to some other place and everything will "just work".
1022    
1023    (Companion commands such as ml-build and ml-makedepend also sense this
1024    variable.)
1025    
1026    ----------------------------------------------------------------------
1027    Name: Matthias Blume
1028    Date: 2002/07/12 21:19:00 EDT
1029    Tag: blume-20020712-liveness
1030    Description:
1031    
1032    Exported two useful "step" functions from liveness module (MLRISC).
1033    
1034    ----------------------------------------------------------------------
1035    Name: Matthias Blume
1036    Date: 2002/07/05 16:00 EDT
1037    Tag: Release_110_41
1038    Description:
1039    
1040    New working release.  New bootfiles.
1041    
1042    ----------------------------------------------------------------------
1043    Name: Matthias Blume
1044    Date: 2002/07/05 10:25:00 EDT
1045    Tag: blume-20020705-btimp
1046    Description:
1047    
1048    Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
1049    other clients can set up backtracing support.
1050    
1051    ----------------------------------------------------------------------
1052    Name: Matthias Blume
1053    Date: 2002/06/25 17:23:00 EDT
1054    Tag: blume-20020625-fpmax
1055    Description:
1056    
1057    Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
1058    case.  (The sense of the isNaN test was reversed -- which made min and
1059    max always return their first argument.)
1060    
1061    ----------------------------------------------------------------------
1062    Name: Matthias Blume
1063    Date: 2002/06/11
1064    Tag: blume-20020611-unixpath
1065    Description:
1066    
1067    Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
1068    
1069    ----------------------------------------------------------------------
1070    Name: Matthias Blume
1071    Date: 2002/06/10 16:35:00 EDT
1072    Tag: blume-20020610-ieeereal
1073    Description:
1074    
1075    I back-ported my implementation of IEEEReal.fromString from the
1076    idlbasis-devel branch so that we can test it.
1077    
1078    Another small change is that ppDec tries to give more information
1079    than just "<sig>" in the case of functors.  However, this code is
1080    broken in some mysterious way if the functor's body's signature
1081    has not been declared by ascription but gets inferred from the
1082    implementation.  This needs fixing...
1083    
1084    ----------------------------------------------------------------------
1085    Name: Matthias Blume
1086    Date: 2002/05/31
1087    Tag: blume-20020531-btrace-mode
1088    Description:
1089    
1090    Resurrected SMLofNJ.Internals.BTrace.mode.  (It accidentally fell by
1091    the wayside when I switched over to using Controls everywhere.)
1092    
1093    ----------------------------------------------------------------------
1094    Name: Lal George
1095    Date: 2002/05/23 12:21:40 EDT
1096    Tag: george-20020523-visual-labels
1097    Description:
1098    
1099    Labels are now displayed in the graphical output to make
1100    the fall-through and target blocks obvious.
1101    
1102    ----------------------------------------------------------------------
1103    Name: Matthias Blume
1104    Date: 2002/05/22 11:03:00 EDT
1105    Tag: blume-20020522-shrink
1106    Description:
1107    
1108    John tweaked yesterday's fix for 1131 to handle an out-of-memory
1109    situation that comes up when allocating huge arrays.
1110    
1111    ----------------------------------------------------------------------
1112    Name: Matthias Blume
1113    Date: 2002/05/21 16:00:00 EDT
1114    Tag: Release_110_40
1115    Description:
1116    
1117    New working release (110.40).  New bootfiles.
1118    
1119    [Also: John Reppy fixed GC bug 1131.]
1120    
1121    ----------------------------------------------------------------------
1122    Name: Matthias Blume
1123    Date: 2002/05/21 12:35:00 EDT
1124    Tag: blume-20020521-cmdoc
1125    Description:
1126    
1127    CM documentation update.
1128    
1129    ----------------------------------------------------------------------
1130    Name: Matthias Blume
1131    Date: 2002/05/21 10:55:00 EDT
1132    Tag: blume-20020521-misc
1133    Description:
1134    
1135    - John tweaked runtime to be silent on heap export (except when
1136      GC messages are on).
1137    - I added a few more things (cross-compiling versions of CMB) to
1138      config/preloads (as suggestions).
1139    
1140    ----------------------------------------------------------------------
1141    Name: Matthias Blume
1142    Date: 2002/05/20 22:25:00 EDT
1143    Tag: blume-20020520-controls
1144    Description:
1145    
1146    - Added ControlUtil structure to control-lib.cm.
1147    - Use it throughout.
1148    - Used Controls facility to define MLRISC controls (as opposed to
1149      registering MLRISC control ref cells with Controls after the fact)
1150    - Fixed messed-up controls priorities.
1151    
1152    * Removed again all the stuff from config/preloads that one wouldn't
1153      be able to preload at the time the initial heap image is built.
1154      (Many libraries, e.g., CML, do not exist yet at this time.  The
1155       only libraries that can be preloaded via config/preloads are those
1156       that come bundled with the bootfiles.)
1157    
1158    ----------------------------------------------------------------------
1159    Name: Matthias Blume
1160    Date: 2002/05/20 10:59:00 EDT
1161    Tag: blume-20020520-preloads
1162    Description:
1163    
1164    Added a lot of commented-out suggestions for things to be included
1165    in config/preloads.
1166    
1167    ----------------------------------------------------------------------
1168    Name: Allen Leung
1169    Date: 2002/05/18 14:20:00 EDT
1170    Tag: leunga-20020518-mdl
1171    Description:
1172    
1173    o Made the mdl tool stuff compile and run again.
1174    o I've disabled all the stuff that depends on RTL specifications; they
1175      are all badly broken anyway.
1176    
1177    ----------------------------------------------------------------------
1178    Name: Matthias Blume
1179    Date: 2002/05/17 16:49:00 EDT
1180    Tag: blume-20020517-controls
1181    Description:
1182    
1183    0. John Reppy made several modifications to the SML/NJ library.
1184       In particular, there is a shiny new controls-lib.cm.
1185    
1186    1. Pushed new controls interface through compiler so that everything
1187       compiles again.
1188    
1189    2. Added FormatComb and FORMAT_COMB to the CML version of the
1190       SML/NJ library (so that CML compiles again).
1191    
1192    3. Modified init scripts because XXX_DEFAULT environment variables
1193       are no longer with us.  (Boot-time initialization is now done
1194       using the same environment variables that are also used for
1195       startup-time initialization of controls.)
1196    
1197    ----------------------------------------------------------------------
1198    Name: Lal George
1199    Date: 2002/05/15 09:20:10 EDT
1200    Tag: george-20020515-pseudo-op-decls
1201    Description:
1202    
1203            All pseudo-ops emitted before the first segment declaration
1204    such as TEXT, DATA, and BSS directives are assumed to be global
1205    declarations and are emitted first in the assembly file. This is
1206    useful in a number of situations where one has pseudo-ops that are not
1207    specific to any segment, and also works around the constraint that one
1208    cannot have client pseudo-ops in the TEXT segment.
1209    
1210            Because no segment is associated with these declarations it is
1211    an error to allocate any space or objects before the first segment
1212    directive and an exception will be raised. However, we cannot make
1213    this check for client pseudo-ops.
1214    
1215            These top level declarations are a field in the CFG graph_info.
1216    In theory you can continue to add to this field after the CFG has been
1217    built -- provided you know what you are doing;-)
1218    
1219    ----------------------------------------------------------------------
1220    Name: Matthias Blume
1221    Date: 2002/05/13 16:40:00 EDT
1222    Tag: blume-20020513-pp-etc
1223    Description:
1224    
1225    A few minor bugfixes:
1226    
1227      - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
1228        (Bogus printouts for redefined bindings still occur.  Compiler
1229        bug should no longer occur now.  We need to redo the prettyprinter
1230        from scratch.)
1231    
1232      - CM pathname printer now also adds escape sequences for ( and )
1233    
1234      - commend and docu fixes for ml-nlffi
1235    
1236    ----------------------------------------------------------------------
1237    Name: Matthias Blume
1238    Date: 2002/05/10 16:40:00 EDT
1239    Tag: blume-20020510-erg-textio
1240    Description:
1241    
1242    Applied the following bugfix provided by Emden Gansner:
1243    
1244        Output is corrupted when outputSubstr is used rather than output.
1245    
1246        The problem occurs when a substring
1247    
1248            ss = (s, dataStart, dataLen)
1249    
1250        where dataStart > 0, fills a stream buffer with avail bytes left.
1251        avail bytes of s, starting at index dataStart, are copied into the
1252        buffer, the buffer is flushed, and then the remaining dataLen-avail
1253        bytes of ss are copied into the beginning of the buffer. Instead of
1254        starting this copy at index dataStart+avail in s, the current code
1255        starts the copy at index avail.
1256    
1257        Fix:
1258        In text-io-fn.sml, change line 695 from
1259             val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
1260        to
1261             val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
1262    
1263    ----------------------------------------------------------------------
1264    Name: Matthias Blume
1265    Date: 2002/04/12 13:55:00 EDT
1266    Tag: blume-20020412-assyntax
1267    Description:
1268    
1269    1. Grabbed newer assyntax.h from the XFree86 project.
1270    2. Fiddled with how to compile X86.prim.asm without warnings.
1271    3. (Very) Minor cleanup in CM.
1272    
1273    ----------------------------------------------------------------------
1274    Name: Matthias Blume
1275    Date: 2002/04/01 (no joke!) 17:07:00 EST
1276    Tag: blume-20020401-x86div
1277    Description:
1278    
1279    Added full support for div/mod/rem/quot on the x86, using the machine
1280    instruction's two results (without clumsily recomputing the remainder)
1281    directly where appropriate.
1282    
1283    Some more extensive power-of-two support was added to the x86 instruction
1284    selector (avoiding expensive divs, mods, and muls where they can be
1285    replaced with cheaper shifts and masks).  However, this sort of thing
1286    ought to be done earlier, e.g., within the CPS optimizer so that
1287    all architectures benefit from it.
1288    
1289    The compiler compiles to a fixed point, but changes might be somewhat
1290    fragile nevertheless.  Please, report any strange things that you might
1291    see wrt. div/mod/quot/rem...
1292    
1293    ----------------------------------------------------------------------
1294    Name: Matthias Blume
1295    Date: 2002/03/29 17:22:00
1296    Tag: blume-20020329-div
1297    Description:
1298    
1299    Fixed my broken div/mod logic.  Unfortunately, this means that the
1300    inline code for div/mod now has one more comparison than before.
1301    Fast paths (quotient > 0 or remainder = 0) are not affected, though.
1302    The problem was with quotient = 0, because that alone does not tell
1303    us which way the rounding went.  One then has to look at whether
1304    remainder and divisor have the same sign...  :(
1305    
1306    Anyway, I replaced the bootfiles with fresh ones...
1307    
1308    ----------------------------------------------------------------------
1309    Name: Matthias Blume
1310    Date: 2002/03/29 14:10:00 EST
1311    Tag: blume-20020329-inlprims
1312    Description:
1313    
1314    NEW BOOTFILES!!!    Version number bumped to 110.39.3.
1315    
1316    Primops have changed. This means that the bin/boot-file formats have
1317    changed as well.
1318    
1319    To make sure that there is no confusion, I made a new version.
1320    
1321    
1322    CHANGES:
1323    
1324    * removed REMT from mltree (remainder should never overflow).
1325    
1326    * added primops to deal with divisions of all flavors to the frontend
1327    
1328    * handled these primops all the way through so they map to their respective
1329      MLRISC support
1330    
1331    * used these primops in the implementation of Int, Int32, Word, Word32
1332    
1333    * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
1334    
1335    * parameterized INLMIN, INLMAX, and INLABS by a numkind
1336    
1337    * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
1338      floating point
1339    
1340    * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
1341      and Real (but Real.abs maps to a separate floating-point-only primop)
1342    
1343    
1344    TODO items:
1345    
1346    * Hacked Alpha32 instruction selection, disabling the selection of REMx
1347      instructions because the machine instruction encoder cannot handle
1348      them.  (Hppa, PPC, and Sparc instruction selection did not handle
1349      REM in the first place, and REM is supported by the x86 machine coder.)
1350    
1351    * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
1352      selection phase.  (The two can be streamlined because the hardware
1353      delivers both quotient and remainder at the same time anyway.)
1354    
1355    * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
1356      (Currently the behavior is inconsistent both across architectures and
1357      wrt. the draft Basis spec.)
1358    
1359    * Word8 should eventually be handled natively, too.
1360    
1361    * There seems to be one serious bug in mltree-gen.sml.  It appears, though,
1362      as if there currently is no execution path that could trigger it in
1363      SML/NJ.  (The assumptions underlying functions arith and promotable do not
1364      hold for things like multiplication and division.)
1365    
1366    ----------------------------------------------------------------------
1367    Name: Matthias Blume
1368    Date: 2002/03/27 16:27:00 EST
1369    Tag: blume-20020327-mlrisc-divisions
1370    Description:
1371    
1372    Added support for all four division operations (ML's div, mod, quot,
1373    and rem) to MLRISC.  In the course of doing so, I also rationalized
1374    the naming (no more annoying switch-around of DIV and QUOT), by
1375    parameterizing the operation by div_rounding_mode (which can be either
1376    DIV_TO_ZERO or DIV_TO_NEGINF).
1377    
1378    The generic MLTreeGen functor takes care of compiling all four
1379    operations down to only round-to-zero div.
1380    
1381    Missing pieces:
1382    
1383      * Doing something smarter than relying on MLTreeGen on architectures
1384        like, e.g., the x86 where hardware division delivers both quotient and
1385        remainder at the same time.  With this, the implementation of the
1386        round-to-neginf operations could be further streamlined.
1387    
1388      * Remove inlining support for div/mod/rem from the frontend and replace it
1389        with primops that get carried through to the backend.  Do this for all
1390        int and word types.
1391    
1392    ----------------------------------------------------------------------
1393    Name: Matthias Blume
1394    Date: 2002/03/25 17:25:00 EST
1395    Tag: blume-20020325-divmod
1396    Description:
1397    
1398    I improved (hopefully without breaking them) the implementation of Int.div,
1399    Int.mod, and Int.rem.   For this, the code in translate.sml now takes
1400    advantage of the following observations:
1401    
1402      Let  q = x quot y      r = x rem y
1403           d = x div  y      m = x mod y
1404    
1405    where "quot" is the round-to-zero version of integer division that
1406    hardware usually provides.  Then we have:
1407    
1408         r = x - q * y        where neither the * nor the - will overflow
1409         d = if q >= 0 orelse x = q * y then q else q - 1
1410                              where neither the * nor the - will overflow
1411         m = if q >= 0 orelse r = 0 then r else r + y
1412                              where the + will not overflow
1413    
1414    This results in substantial simplification of the generated code.
1415    The following table shows the number of CFG nodes and edges generated
1416    for
1417            fun f (x, y) = x OPER y
1418            (* with OPER \in div, mod, quot, rem *)
1419    
1420    
1421        OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
1422        --------------------------------------------------------
1423         div |         24 |         39 |         12 |         16
1424         mod |         41 |         71 |         12 |         16
1425        quot |          8 |         10 |          8 |         10
1426         rem |         10 |         14 |          8 |         10
1427    
1428    
1429    ----------------------------------------------------------------------
1430    Name: Matthias Blume
1431    Date: 2002/03/25 22:06:00 EST
1432    Tag: blume-20020325-cprotobug
1433    Description:
1434    
1435    Fixed a bug in cproto (c prototype decoder).
1436    
1437    ----------------------------------------------------------------------
1438    Name: Matthias Blume
1439    Date: 2002/03/25 16:00:00 EST
1440    Tag: blume-20020325-raw-primops
1441    Description:
1442    
1443    I did some cleanup to Allen's new primop code and
1444    replaced yesterday's bootfiles with new ones.
1445    (But they are stored in the same place.)
1446    
1447    ----------------------------------------------------------------------
1448    Name: Matthias Blume
1449    Date: 2002/03/24 22:40:00 EST
1450    Tag: blume-20020324-bootfiles
1451    Description:
1452    
1453    Made the bootfiles that Allen asked for.
1454    
1455    ----------------------------------------------------------------------
1456    Name: Allen Leung
1457    Date: 2002/03/23 15:50:00 EST
1458    Tag: leunga-20020323-flint-cps-rcc-primops
1459    Description:
1460    
1461      1. Changes to FLINT primops:
1462    
1463        (* make a call to a C-function;
1464         * The primop carries C function prototype information and specifies
1465         * which of its (ML-) arguments are floating point. C prototype
1466         * information is for use by the backend, ML information is for
1467         * use by the CPS converter. *)
1468      | RAW_CCALL of { c_proto: CTypes.c_proto,
1469                       ml_args: ccall_type list,
1470                       ml_res_opt: ccall_type option,
1471                       reentrant : bool
1472                     } option
1473       (* Allocate uninitialized storage on the heap.
1474        * The record is meant to hold short-lived C objects, i.e., they
1475        * are not ML pointers.  With the tag, the representation is
1476        * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
1477        *)
1478      | RAW_RECORD of {tag:bool,sz:int}
1479      and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
1480    
1481      2.  These CPS primops are now overloaded:
1482    
1483           rawload of {kind:numkind}
1484           rawstore of {kind:numkind}
1485    
1486          The one argument form is:
1487    
1488             rawload {kind} address
1489    
1490          The two argument form is:
1491    
1492             rawload {kind} [ml object, byte-offset]
1493    
1494      3. RAW_CCALL/RCC now takes two extra arguments:
1495    
1496         a. The first is whether the C call is reentrant, i.e., whether
1497            ML state should be saved and restored.
1498         b. The second argument is a string argument specifying the name of
1499            library and the C function.
1500    
1501         These things are currently not handled in the code generator, yet.
1502    
1503      4. In CProto,
1504    
1505         An encoding type of "bool" means "ml object" and is mapped into
1506         C prototype of PTR.  Note that "bool" is different than "string",
1507         even though "string" is also mapped into PTR, because "bool"
1508         is assigned an CPS type of BOGt, while "string" is assigned INT32t.
1509    
1510      5. Pickler/unpicker
1511    
1512         Changed to handle RAW_RECORD and newest RAW_CCALL
1513    
1514      6. MLRiscGen,
1515    
1516         1. Changed to handle the new rawload/rawstore/rawrecord operators.
1517         2. Code for handling C Calls has been moved to a new module CPSCCalls,
1518            in the file CodeGen/cpscompile/cps-c-calls.sml
1519    
1520      7. Added the conditional move operator
1521    
1522             condmove of branch
1523    
1524         to cps.  Generation of this is still buggy so it is currently
1525         disabled.
1526    
1527    ----------------------------------------------------------------------
1528    Name: Lal George
1529    Date: 2002/03/22 14:18:25 EST
1530    Tag: george-20020322-cps-branch-prob
1531    Description:
1532    
1533    Implemented the Ball-Larus branch prediction-heuristics, and
1534    incorporated graphical viewers for control flow graphs.
1535    
1536    Ball-Larus Heuristics:
1537    ---------------------
1538    See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
1539    
1540    By design it uses the Dempster-Shafer theory for combining
1541    probabilities.  For example, in the function:
1542    
1543        fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
1544    
1545    the ball-larus heuristics predicts that the n=0 is unlikely
1546    (OH-heuristic), and the 'then' branch is unlikely because of the
1547    RH-heuristic -- giving the 'then' branch an even lower combined
1548    probability using the Dempster-Shafer theory.
1549    
1550    Finally, John Reppy's loop analysis in MLRISC, further lowers the
1551    probability of the 'then' branch because of the loop in the else
1552    branch.
1553    
1554    
1555    Graphical Viewing:
1556    ------------------
1557    I merely plugged in Allen's graphical viewers into the compiler. The
1558    additional code is not much. At the top level, saying:
1559    
1560            Control.MLRISC.getFlag "cfg-graphical-view" := true;
1561    
1562    will display the graphical view of the control flow graph just before
1563    back-patching.  daVinci must be in your path for this to work. If
1564    daVinci is not available, then the default viewer can be changed
1565    using:
1566    
1567            Control.MLRISC.getString "viewer"
1568    
1569    which can be set to "dot" or "vcg" for the corresponding viewers. Of
1570    course, these viewers must be in your path.
1571    
1572    The above will display the compilation unit at the level of clusters,
1573    many of which are small, boring, and un-interesting. Also setting:
1574    
1575            Control.MLRISC.getInt "cfg-graphical-view_size"
1576    
1577    will display clusters that are larger than the value set by the above.
1578    
1579    
1580    ----------------------------------------------------------------------
1581    Name: Matthias Blume
1582    Date: 2002/03/21 22:20:00 EST
1583    Tag: blume-20020321-kmp-bugfix
1584    Description:
1585    
1586    Changed the interface to the KMP routine in PreString and fixed
1587    a minor bug in one place where it was used.
1588    
1589    ----------------------------------------------------------------------
1590  Name: Allen Leung  Name: Allen Leung
1591  Date: 2002/03/21 20:30:00 EST  Date: 2002/03/21 20:30:00 EST
1592  Tag: leunga-20020321-cfg  Tag: leunga-20020321-cfg

Legend:
Removed from v.1158  
changed lines
  Added in v.1515

root@smlnj-gforge.cs.uchicago.edu
ViewVC Help
Powered by ViewVC 1.0.0