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Diff of /sml/trunk/HISTORY

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revision 1132, Mon Mar 11 18:32:50 2002 UTC revision 1619, Wed Sep 8 18:19:45 2004 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume (blume (at) tti - c (dot) org)
17    Date: 2004/09/08 13:20:00 CDT
18    Tag: blume-20040908-heap-magic
19    Description:
20    
21    Bumped the heap macig number to 0x09082004 to account for the changed
22    layout of the ML frame under MacOS X.
23    
24    ----------------------------------------------------------------------
25    Name: Allen Leung (leunga (at) reservoir (dot) com)
26    Date: 2004/09/03 11:26:00 EST
27    Tag: leunga-20040903-cygwin-install
28    Description:
29    
30       Added a patch to _arch-n-opsys to enable the Cygwin runtime.
31    The Cygwin runtime is turned on by setting the environment
32    variable SMLNJ_CYGWIN_RUNTIME to 1.
33    
34    ----------------------------------------------------------------------
35    Name: Matthias Blume (blume (at) tti - c (dot) org)
36    Date: 2004/08/31 17:15:00 CDT
37    Tag: blume-20040831-core
38    Description:
39    
40    Added some exports to src/compiler/core.cm upon request by J. Joemann.
41    
42    ----------------------------------------------------------------------
43    Name: Matthias Blume (blume (at) tti - c (dot) org)
44    Date: 2004/08/30 17:55:00 CDT
45    Tag: blume-20040830-installer
46    Description:
47    
48    Upon request by Johannes Joemann:
49    
50    - improved ML code of installer to fall back to coping when renaming
51      fails (i.e., when source and target are on different file systems);
52      the code compiles but has yet to be tested in anger
53    - removed mlrisc from list of default targets (config/targets)
54    
55    ----------------------------------------------------------------------
56    Name: Matthias Blume (blume (at) tti - c (dot) org)
57    Date: 2004/08/27 17:20:00 CDT
58    Tag: blume-20040827-ptreql
59    Description:
60    
61    Added ptreql primop to structure InlineT (upon request from Larry
62    Paulson).
63    
64    ----------------------------------------------------------------------
65    Name: Allen Leung (leunga (at) reservoir (dot) com)
66    Date: 2004/08/15 21:21:00 EST
67    Tag: leunga-110_48-udgraph
68    Description:
69    
70    Another bug fix from Carl Hauser:
71    
72    diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml
73    > 48c48
74    > <              | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else
75    > e::L)
76    > ---
77    > >              | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L)
78    > Without this, any deletion of an edge in an undirected graph does severe
79    > violence to the graph.
80    
81    ----------------------------------------------------------------------
82    Name: Allen Leung (leunga (at) reservoir (dot) com)
83    Date: 2004/08/10 23:35:00 EST
84    Tag: leunga-110_48-ppc
85    Description:
86    
87       The IBM/MacOS syntax switch on PPC was incorrectly swapped.
88    
89    ----------------------------------------------------------------------
90    Name: Matthias Blume (blume (at) tti - c (dot) org)
91    Date: 2004/08/10 12:00:00 CDT
92    Tag: Release_110_48
93    Description:
94    
95    New working version (110.48).  NEW BOOTFILES!
96    
97    ----------------------------------------------------------------------
98    Name: Allen Leung (leunga (at) reservoir (dot) com)
99    Date: 2004/08/09 12:21:00 EST
100    Tag: leunga-110_47-dijsktra
101    Description:
102    
103    Bug fix from Carl Hauser:
104    
105    single_source_shortest_paths in dijkstra.sml was observed to get wrong
106    answers (by comparing to single_source_shortest_paths in bellman-ford.sml).
107    
108    The problem is that following the expression A.update(dist,s,Num.zero)
109    it is necessary to update the priority queue using Q.decreaseWeight(Q,s).
110    
111    ----------------------------------------------------------------------
112    Name: Matthias Blume (blume (at) tti - c (dot) org)
113    Date: 2004/08/06 18:10:00 CDT
114    Tag: blume-20040806-cmdline
115    Description:
116    
117    Fiddled with handling of command-line options:
118    
119      * sml now quits after processing the command line
120        if -H, -S, -h<n>, or -s<n> appears as the last
121        command-line argument
122      * a new option -q terminates the session when encountered on
123        the command line; subsequent arguments will be ignored
124      * bug fixes: short (erroneous) arguments are no longer ignored
125        completely
126    
127    ----------------------------------------------------------------------
128    Name: Allen Leung (leunga (at) reservoir (dot) com)
129    Date: 2004/08/04 18:17:00 EST
130    Tag: leunga-110_47-ppc-ibm-asm
131    Description:
132    
133      - Added minimal IBM assembly syntax support for PowerPC.
134    
135      - Cygwin: manually changed the file cygwin.def.  Some exported symbols have
136        been altered in the runtime.  We need an automatic way to keep the file
137        in sync.
138    
139    ----------------------------------------------------------------------
140    Name: Matthias Blume (blume (at) tti - c (dot) org)
141    Date: 2004/08/04 14:00:00 CDT
142    Tag: Release_110_47
143    Description:
144    
145    New working version (110.47).  NEW BOOTFILES!
146    
147    ----------------------------------------------------------------------
148    Name: Matthias Blume (blume (at) tti - c (dot) org)
149    Date: 2004/08/03 14:25:00 CDT
150    Tag: blume-20040803-callingconv
151    Description:
152    
153    Added low-level support for choosing C calling conventions by
154    twiddling the type of rawccall.  (See
155    src/compiler/Semant/types/cproto.sml for details.)
156    
157    ----------------------------------------------------------------------
158    Name: Matthias Blume (blume (at) tti - c (dot) org)
159    Date: 2004/08/02 15:55:00 CDT
160    Tag: blume-20040802-backout
161    Description:
162    
163    Backed out of change to win32-filesys.c.  The earlier patch to
164    get_file_time caused CM to produce files with the wrong time stamp.
165    
166    ----------------------------------------------------------------------
167    Name: Matthias Blume (blume (at) tti - c (dot) org)
168    Date: 2004/08/02 14:45:00 CDT
169    Tag: blume-20040802-nlffi-win32
170    Description:
171    
172    Added NLFFI support for Win32, adapted from a patch provided by David
173    Hansel.  This is currently completely untested.  Also, the issue
174    concerning stdcall vs. ccall is still unresolved.
175    
176    ----------------------------------------------------------------------
177    Name: Matthias Blume (blume (at) tti - c (dot) org)
178    Date: 2004/07/30 17:55:00 CDT
179    Tag: blume-20040730-various
180    Description:
181    
182    Gearing up towards 110.47...
183    
184    - various minor bugfixes to ml-nlffigen
185    - a beginning of a manual for nlffi
186    
187    - eliminated 'export name=value' in config/install.sh as this does
188      not work with certain versions of /bin/sh
189      (Thanks to David King at Motorola for catching this.)
190    
191    - several bugfixes provided or suggested by David Hansel at Reactive Systems:
192      - added a test for tm==NULL to gmtime.c and localtime.c
193      - applied patch for incorrect GetFileTime under win32
194      - toSeconds -> toMilliseconds in Win32/win32-process.sml
195    
196    ----------------------------------------------------------------------
197    Name: Matthias Blume (blume (at) tti - c (dot) org)
198    Date: 2004/07/21 18:20:00 CDT
199    Tag: blume-20040721-nlffigen
200    Description:
201    
202    - Fixed minor issue in ml-nlffigen: Now generate structure T_foo
203      for a typedef to an incomplete type, but leave out the "typ" member.
204      (This is just for consistency.)
205    - Started to produce what is supposed to become better (i.e., comprehensive)
206      documentation of what ml-nlffigen does and produces.
207    
208    ----------------------------------------------------------------------
209    Name: Matthias Blume (blume (at) tti - c (dot) org)
210    Date: 2004/07/14 16:25:00 CDT
211    Tag: blume-20040714-union
212    Description:
213    
214    Added C_UNION to c-calls/c-types.sml and updated the machinery
215    (ml-nlffigen, cproto.sml) that conveys C function interface
216    information to the code generator.
217    
218    However, the actual architecture-specific implementation of function
219    arguments and results that are C unions is still not implemented.
220    
221    ----------------------------------------------------------------------
222    Name: Allen Leung (leunga (at) reservoir (dot) com)
223    Date: 2004/07/14 14:38:00 EST
224    Tag: leunga-110_46_1-ppc-lwzu
225    Description:
226    
227        Added these instructions to the PowerPC architecture:
228        LBZU(X), LHZU(X), LWZU(X),
229        STWU(X), STFDU, STFSU
230    
231        etc...
232    
233        Note: I haven't added their instruction encoding into the description.
234    
235    ----------------------------------------------------------------------
236    Name: Allen Leung (leunga (at) reservoir (dot) com)
237    Date: 2004/07/13 15:04:00 EST
238    Tag: leunga-110_46_1-ppc-lwarx
239    Description:
240    
241       Added the two instructions LWARX and STWCX to the PowerPC
242    instruction set.
243    
244       A (untested) rewrite of loop-structure.sml.  The old version
245    is completely broken.
246    
247    ----------------------------------------------------------------------
248    Name: Matthias Blume (blume (at) tti - c (dot) org)
249    Date: 2004/07/13 13:50:00 CDT
250    Tag: blume-20040713-nlffi
251    Description:
252    
253    - use paramAlloc to report c-calls with too many arguments
254      (for PPC version where parameter area is pre-allocated)
255    - added ccall_maxargspace to machspec (to implement the above)
256    - made "make" commend in CM's "make" tool configurable
257    - added option (default: on) for passing the name of the SML/NJ's "bin"
258      directory to "make"; the call looks like this:
259    
260         make <options> SMLNJ_BINDIR=<dir> <target>
261    
262      This can be used by the Makefile to, e.g., pick the "right" version
263      of ml-nlffigen.
264    - minor code tweaks
265    
266    ----------------------------------------------------------------------
267    Name: Matthias Blume (blume (at) tti - c (dot) org)
268    Date: 2004/07/12 22:50:00 CDT
269    Tag: blume-110_46_1-macosx-nlffi
270    Description:
271    
272    NLFFI under Mac OS X now working (sort of).  This is largely untested,
273    though.
274    
275    Note:  1. You have to make a new, clean build of the runtime system.
276           2. There are new BOOTFILES, you have to use them!
277              (Doing the bootstrap process yourself would be *very* painful!
278               If you absolutely have to do it, build the system under
279               a different architecture and then cross-compile.)
280    
281    Version bumped to 110.46.1 to account for runtime data format changes.
282    
283    ----------------------------------------------------------------------
284    Name: Matthias Blume (blume (at) tti - c (dot) org)
285    Date: 2004/06/18 14:30:00 CDT
286    Tag: blume-20040618-unix
287    Description:
288    
289    Changed the implementation of structure Unix so that the same stream
290    is returned every time one of the {text,bin}{In,Out}streamOf functions
291    is invoked on the same proc.  This is not what the spec currently
292    says -- although IMO it arguably should.  (See discussion below.)
293    
294    ----------------------------------------------------------------------
295    Name: Matthias Blume (blume (at) tti - c (dot) org)
296    Date: 2004/06/17 18:15:00 CDT
297    Tag: Release_110_46
298    Description:
299    
300    New working version (110.46).  NEW BOOTFILES!
301    
302    ----------------------------------------------------------------------
303    Name: Matthias Blume (blume (at) tti - c (dot) org)
304    Date: 2004/06/17 17:20:00 CDT
305    Tag: blume-20040617-timer-unix
306    Description:
307    
308    Changed the interface of structures Timer and Unix to match the most
309    recent Basis spec.
310    
311    In the case of Unix there still seems to be an open/weird issue:
312    
313       The {text,bin}{In,Out}streamOf functions are supposed to create
314       fresh streams whenever they are called -- as opposed to have them
315       return the same stream every time.  This design is supposed to
316       prevent space leaks caused by proc values hanging on to streams.
317    
318       The reap function, on the other hand, is supposed to close the
319       streams.  This cannot be done without having a handle on the
320       stream in proc after all...
321    
322    I took the liberty to implement the following stopgap solution:
323    
324      The proc value hangs on to the most recently created stream(s).
325      Reap closes those.  If either or both of the two streams hadn't
326      been created at all yet, then reap will close the corresponding
327      file descriptors directly.
328    
329    PS: I don't understand the original space leak argument anymore.  If
330    a proc hangs on to the imperative stream, then I/O operations on those
331    will advance the state of the cached stream and avoid the space leak.
332    
333    ----------------------------------------------------------------------
334    Name: Matthias Blume (blume (at) tti - c (dot) org)
335    Date: 2004/05/28 16:45:00 CDT
336    Tag: blume-20040528-basis
337    Description:
338    
339    Added signature PACK_REAL and exported functor PrimIO.
340    
341    ----------------------------------------------------------------------
342    Name: Matthias Blume (blume (at) tti - c (dot) org)
343    Date: 2004/05/25 16:00:00 CDT
344    Tag: blume-20040525-group-owner
345    Description:
346    
347    CM now ignores (but still accepts) the "owner" information in group
348    descriptions.  The owner of a group is its next enclosing
349    library. Each group must have a unique owner.  (There is a virtual
350    "toplevel" library that owns groups which are not nested within a real
351    library.)  Previously, each group had to explicitly declare its owner,
352    and CM would check that such a declaration is correct.  The new scheme
353    is to have CM check that for each group there is precisely one owning
354    library.
355    
356    The advantage of the new scheme is that the programmer no longer needs
357    to maintain the somewhat annoying owner information.  The downside is
358    that CM cannot enforce the ownership rule across multiple runs of
359    CM.make.  Fortunately, enclosing the same group in two different
360    libraries A and B which are not part of the same program does not
361    cause real problems.
362    
363    ----------------------------------------------------------------------
364    Name: Matthias Blume (blume (at) tti - c (dot) org)
365    Date: 2004/05/20 16:00:00 CDT
366    Tag: blume-20040520-win32
367    Description:
368    
369    Made the win32 version work again.  (Strangely, a misplaced comma had
370    slipped into win32-process.c which prevented the runtime from being
371    compiled correctly.)
372    
373    Also, included a minor addition to ml-build.bat analogous to what was
374    done in blume-20040519-ml-build.
375    
376    ----------------------------------------------------------------------
377    Name: Matthias Blume (blume (at) tti - c (dot) org)
378    Date: 2004/05/19 22:10:00 CDT
379    Tag: blume-20040519-ml-build
380    Description:
381    
382    Arranged for ml-build to clean up after itself a little bit better.
383    The script generates a temporary SML source file and compiles it using
384    CM, so CM generates metadata (GUID, SKEL, objectfile) for it.  It now
385    gets rid of those at the end, so they don't accumulate under .cm.
386    
387    This required a minor change to install.sh because the name of the
388    metadata directory (default: .cm) is actually configurable at
389    installation time.
390    
391    ----------------------------------------------------------------------
392    Name: Matthias Blume (blume (at) tti - c (dot) org)
393    Date: 2004/05/18 15:50:00 CDT
394    Tag: blume-20040518-mkreader
395    Description:
396    
397    Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
398    implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
399    
400    ----------------------------------------------------------------------
401    Name: Matthias Blume (blume (at) tti - c (dot) org)
402    Date: 2004/05/11 14:35:00 CDT
403    Tag: blume-20040511-win32sock
404    Description:
405    
406    Added previously missing support for many socket-related functions
407    under win32.  Thanks to David Hansel <hansel@reactive-systems.com>
408    for the voluminous patch!
409    
410    (I have not tested this patch under win32 yet.)
411    
412    Here is David's e-mail:
413    
414    Hi,
415    
416    Attached to this email you find a diff against sml/nj 110.45
417    that will enable socket support under Windows.
418    
419    To apply the patch (using unix or cygwin)
420    1) gunzip runtime.diff.gz
421    2) "cd" into "src/runtime" in the source tree of a fresh
422       110.45 installation.
423    3) patch -p 1 < [your/path/to]runtime.diff
424    
425    The code compiles fine but has NOT yet been extensively tested.
426    I only ran a few tests for basic socket client functionality
427    (which worked fine).  Especially the functions that use ioctl
428    are not tested at all and might not work (see below).
429    
430    I implemented this since we want to move to a newer version of sml/nj
431    but need socket support in order to use it.  This is the first time I
432    even had a look at the sml/nj source,  so please review my changes
433    before making this part of the distribution!  Here are a few issues
434    that I think might be better for someone to solve who is more
435    familiar with the sml/nj source (and socket programming):
436    
437    - getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
438      exception since I could not figure out what the windows equivalent
439      of these functions is
440    
441    - In sockets-osdep.h there are a some #include statements that are
442      only used in a few files that include sockets-osdep.h
443    
444    - In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
445      does not process its return value since I don't know how to
446      report an error upwards.
447    
448    - It would probably be good to have a call to WSACleanup() when
449      the library is unloaded (if there is such a possibility).
450      Otherwise I think Windows will take care of this automatically
451      when the process finishes.
452    
453    - I used ioctlsocket() as a replacement for ioctl() but I have
454      no idea if that is actually the proper replacement on Windows.
455    
456    - All these issues are marked in the code by "FIXME" comments.
457    
458    We use sml/nj extensively in our products and are quite happy
459    with it.  I hope this contribution will help you.
460    
461    Keep up the good work!
462    
463    David
464    
465    ----------------------------------------------------------------------
466    Name: Matthias Blume (blume (at) tti - c (dot) org)
467    Date: 2004/05/11 14:20:00 CDT
468    Tag: blume-20040511-installml
469    Description:
470    
471    Fixed two bugs in installml script.  (Thanks to Vesa A. Norrman for
472    the patch.)
473    
474    ----------------------------------------------------------------------
475    Name: Matthias Blume (blume (at) tti - c (dot) org)
476    Date: 2004/05/11 14:05:00 CDT
477    Tag: blume-20040511-nlffi-netbsd
478    Description:
479    
480    Added support for nlffi under netbsd.  (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 12:05:00 CDT
486    Tag: blume-20040511-exports
487    Description:
488    
489    As per request by Adam Chlipala <adam@hcoop.net>, extended various
490    export lists in compiler-related .cm-files.
491    
492    ----------------------------------------------------------------------
493    Name: Matthias Blume (blume (at) tti - c (dot) org)
494    Date: 2004/05/11 11:35:00 CDT
495    Tag: blume-20040511-allsource
496    Description:
497    
498    The installer now honors the "src-smlnj" target again, although its meaning
499    has changed from "all sources required for the compiler" to "all sources
500    the installer knows about".  In other words, if you enable "src-smlnj"
501    in the "targets" file, then the installer will pull in sources for
502    everything.  (Notice that this refers to source code only.  Compiled
503    code is still only installed for modules that were requested explicitly
504    or which are required for other modules that were requested explicitly.)
505    
506    ----------------------------------------------------------------------
507    Name: Matthias Blume (blume (at) tti - c (dot) org)
508    Date: 2004/04/23 17:40:00 CDT
509    Tag: blume-20040423-ieee-scan
510    Description:
511    
512    Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
513    in the exponent calculation we get INF or ZERO (depending on the mantissa
514    and the sign of the exponent).
515    
516    ----------------------------------------------------------------------
517    Name: Matthias Blume (blume (at) tti - c (dot) org)
518    Date: 2004/04/23 10:40:00 CDT
519    Tag: blume-20040423-ml-build
520    Description:
521    
522    The ml-build script now terminates with a non-0 status when something
523    goes wrong.
524    
525    ----------------------------------------------------------------------
526    Name: Matthias Blume (blume (at) tti - c (dot) org)
527    Date: 2004/04/22 16:35:00 CDT
528    Tag: blume-20040422-Option
529    Description:
530    
531    Made exception Option to be the same as exception Option.Option
532    (as it should be).
533    
534    ----------------------------------------------------------------------
535    Name: Allen Leung (leunga (at) reservoir (dot) com)
536    Date: 2004/03/19 14:40:00 EST
537    Tag: leunga-20040319-cygwin-nlffi
538    Description:
539    
540    Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
541    of SML/NJ.  The problem is that
542    
543       lib = dlopen(NULL, ...)
544       f   = dlsym(lib, "malloc");
545    
546    does not work on Windows unless we explicitly export symbols
547    such as 'malloc' during linking.  We fixed this by explicitly
548    exporting the required symbols with the magic gcc incantation:
549    
550        -Wl,--export-all cygwin.def
551    
552    where cygwin.def is a file containing all the symbols that
553    we wish to export.
554    
555    I suspect this is a Windows problem and we'll have to
556    do the same (somehow with windows compilers) when
557    we build the native win32 version with the system
558    calls LoadLibrary/GetProcAddress.
559    
560    ----------------------------------------------------------------------
561    Name: Matthias Blume (blume (at) tti - c (dot) org)
562    Date: 2004/03/04 16:35:00 CST
563    Tag: blume-20040304-intinf-fmt
564    Description:
565    
566    Fixed problem with IntInf.fmt (sign would show up on the right instead
567    of on the left for BIN, OCT, and HEX).
568    
569    ----------------------------------------------------------------------
570    Name: Matthias Blume (blume (at) tti - c (dot) org)
571    Date: 2004/03/04 11:25:00 CST
572    Tag: blume-20040304-symlinks
573    Description:
574    
575    Fixed problem with installer script (unix only) where bin/ml-yacc and
576    friends pointed (via symlinks) to absolute locations instead of just
577    .run-sml.  This was reported by Vesa A Norrman.
578    
579    ----------------------------------------------------------------------
580    Name: Matthias Blume (blume (at) tti - c (dot) org)
581    Date: 2004/02/13 14:50:00 CST
582    Tag: Release_110_45
583    Description:
584    
585    New working version (110.45). New bootfiles.
586    
587    ----------------------------------------------------------------------
588    Name: Matthias Blume (blume (at) tti - c (dot) org)
589    Date: 2004/01/26 15:15:15 CST
590    Tag: blume-20040126-toplevel
591    Description:
592    
593    Improved handling of exceptions at the interactive toplevel.
594    
595    ----------------------------------------------------------------------
596    Name: Matthias Blume (blume (at) tti - c (dot) org)
597    Date: 2004/01/26 11:25:00
598    Tag: blume-20040126-app
599    Description:
600    
601    Type of top-level "app" corrected.
602    Added code for setting vp_limitPtrMask to Win32-specific runtime.
603    
604    ----------------------------------------------------------------------
605    Name: Matthias Blume (blume (at) tti - c (dot) org)
606    Date: 2003/11/18 17:10 CST
607    Tag: blume-20031118-basis-fiddle
608    Description:
609    
610    - changed Timer interface to what might become the spec
611    - POSIX_FLAGS -> BIT_FLAGS according to spec
612    - some other minor discrepancies wrt. spec eliminated
613    
614    ----------------------------------------------------------------------
615    Name: Matthias Blume (blume (at) tti - c (dot) org)
616    Date: 2003/11/06 12:00:00 CST
617    Tag: Release_110_44
618    Description:
619    
620    New working version (110.44). New bootfiles.
621    
622    ----------------------------------------------------------------------
623    Name: Matthias Blume (blume (at) tti - c (dot) org)
624    Date: 2003/11/04 11:50:00 CST
625    Tag: blume-20031104-move-libraries
626    Description:
627    
628    Eliminated the "dont_move_libraries" directive in config/targets.
629    (The mechanism was broken and could not be fixed easily.  Moreover,
630    there does not seem to be any reason not to move all libraries into
631    lib during installation.  I originally implemented this directive as a
632    backward-compatibility feature when I first introduced the new CM.
633    Now that things have been stable for a long time and going back to the
634    old CM is not an option, there is no reason to keep it around.)
635    
636    ----------------------------------------------------------------------
637    Name: Matthias Blume (blume (at) tti - c (dot) org)
638    Date: 2003/11/03 16:00:00 CST
639    Tag: blume-20031103-installdir
640    Description:
641    
642    Made installer honor INSTALLDIR variable again.  (Thanks to Chris
643    Richards for pointing out the problem and providing the solution.)
644    
645    ----------------------------------------------------------------------
646    Name: Matthias Blume (blume (at) tti - c (dot) org)
647    Date: 2003/10/01 17:05:00 CDT
648    Tag: blume-20031001-lal-mlrisc
649    Description:
650    
651    MLRISC bug fix from Lal.
652    
653    ----------------------------------------------------------------------
654    Name: Matthias Blume (blume (at) tti - c (dot) org)
655    Date: 2003/09/30 16:10:00 CDT
656    Tag: blume-20030930-primio-bat
657    Description:
658    
659    1. Added openVector, nullRd, and nullWr to PRIM_IO.
660    2. Improved .bat files (for Win32 port) to make things work under Win95.
661       (thanks to Aaron S. Hawley for this one)
662    
663    ----------------------------------------------------------------------
664    Name: Matthias Blume (blume (at) tti - c (dot) org)
665    Date: 2003/09/26 16:05:00 CDT
666    Tag: blume-20030926-wrappriv
667    Description:
668    
669    Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
670    
671    ----------------------------------------------------------------------
672    Name: Matthias Blume (blume (at) tti - c (dot) org)
673    Date: 2003/09/26 15:00:00 CDT
674    Tag: blume-20030926-110_43_3
675    Description:
676    
677    - additional cleanup
678    - version number bump, NEW BOOTFILES
679    
680    ----------------------------------------------------------------------
681    Name: Matthias Blume (blume (at) tti - c (dot) org)
682    Date: 2003/09/26 12:00:00 CDT
683    Tag: blume-20030926-ppautoload
684    Description:
685    
686    I modified the read-eval-print loop so that the autoloader gets
687    invoked whenever the prettyprinter tries to look up a symbol that
688    is not currently defined in the toplevel environment but which
689    appears in CM's autoload registry.  As a result, we see far fewer of
690    those ?.Foo.Bar.xxx names in the prettyprinter's output.
691    
692    In addition to this I tried to clean up some pieces of the Basis
693    implementation (e.g., Socket, Word8Array) in order to prevent other
694    instances of these ?.Foo.Bar.xxx names from being printed.
695    
696    The mechanism that picks names for types still needs some work, though.
697    (Right now it seems that if there is a type A.t which is defined to
698    be B.u, but B is unavailable at toplevel, then A.t gets printed as
699    "?.B.u" although the perhaps more sensible solution would be to use
700    "A.t" in this case.  In other words, the prettyprinter should follow
701    a chain of DEFtycs not farther than there are corresponding toplevel
702    names in the current environment.)
703    
704    ----------------------------------------------------------------------
705    Name: Matthias Blume (blume (at) tti - c (dot) org)
706    Date: 2003/09/24 16:31:00 CDT
707    Tag: blume-20030924-installer
708    Description:
709    
710    Another installer tweak:  All the ML code for the installer is now
711    compiled during CMB.make and put into a little library called
712    $smlnj/installer.cm.  The installation then simply invokes
713    
714       sml -m $smlnj/installer.cm
715    
716    and everything happens automagically.
717    
718    Win32:  ML code senses value of environment variable SMLNJ_HOME.
719    Unix:   ML code senses values of environment variables ROOT, CONFIGDIR,
720            and BINDIR.
721    
722    The new scheme guarantees that the ML code responsible for the installation
723    is in sync with the APIs of the main system.  Also, the installer is
724    somewhat faster because the installer script is precompiled.
725    
726    ----------------------------------------------------------------------
727    Name: Matthias Blume (blume (at) tti - c (dot) org)
728    Date: 2003/09/24 15:35:00 CDT
729    Tag: blume-20030924-synsock
730    Description:
731    
732    Added a signature SYNCHRONOUS_SOCKET to basis.cm.  This is like SOCKET
733    but excludes all non-blocking operations.  Defined SOCKET (in Basis)
734    and CML_SOCKET in terms of SYNCHRONOUS_SOCKET.  Removed superfluous
735    implementations of non-blocking operations from CML's Socket
736    structure.
737    
738    ----------------------------------------------------------------------
739    Name: Matthias Blume (blume (at) tti - c (dot) org)
740    Date: 2003/09/24 15:10:05 CDT
741    Tag: blume-20030924-sockets
742    Description:
743    
744    1. Fixed SOCKET API and implementation to match Basis spec.
745       This required changing the internal representation of sockets to one
746       that remembers (for each socket file descriptor) whether it is currently
747       blocking or non-blocking.  This state is maintained lazily (i.e., a system
748       call is made only if the state actually needs to change).
749    
750    2. OS-specific details of sockets were moved into separate files, thus
751       making it possible to unify the bulk of the socket implementations
752       between Unix and Win32.
753    
754    3. CML's socket API changed accordingly.
755       (Note that we need to remove non-blocking functions from this API
756       since they are redundant in the case of CML!)
757    
758    4. CML's socket implementation now makes use of non-blocking functions
759       provided by Basis, thus removing all OS-dependent code from this part
760       of CML.
761    
762    5. Changed Real64.precision from 52 to 53.  Minor cleanup in Real64 code.
763    
764    ----------------------------------------------------------------------
765    Name: Matthias Blume (blume (at) tti - c (dot) org)
766    Date: 2003/09/22 12:10:00 CDT
767    Tag: blume-20030922-110_43_2
768    Description:
769    
770    Made a new interim version and bootfiles for developer's bootstrapping
771    convenience.
772    
773       110.43.2 -- NEW BOOTFILES
774    
775    ----------------------------------------------------------------------
776    Name: Matthias Blume (blume (at) tti - c (dot) org)
777    Date: 2003/09/19 15:55:00 CDT
778    Tag: blume-20030919-cmdir
779    Description:
780    
781    1. new-install.sh -> install.sh
782    2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
783    3. tweaked installer so that another name instead of .cm can be chosen
784       at install time (by setting the CM_DIR_ARC environment variable
785       during installation); once installation is complete, the name is
786       fixed
787    
788    ----------------------------------------------------------------------
789    Name: Matthias Blume (blume (at) tti - c (dot) org)
790    Date: 2003/09/18 16:00:00 CDT
791    Tag: blume-20030918-110_43_1
792    Description:
793    
794    Made a new interim version and bootfiles for developer's bootstrapping
795    convenience.
796    
797       110.43.1 -- NEW BOOTFILES
798    
799    ----------------------------------------------------------------------
800    Name: Matthias Blume (blume (at) tti - c (dot) org)
801    Date: 2003/09/18 15:20:00 CDT
802    Tag: blume-20030918-misc
803    Description:
804    
805    1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
806       this seems to be controversial at the moment) and used those in
807       Posix.ProcEnv.times.
808    
809    2. Added Time.{from,to}Nanoseconds to Time.
810    
811    3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
812       For example, fromLargeInt never needs to look at more than 3 "big
813       digits" to get its 53 bits of precision.
814    
815    ----------------------------------------------------------------------
816    Name: Matthias Blume (blume (at) tti - c (dot) org)
817    Date: 2003/09/17 16:30:00 CDT
818    Tag: blume-20030917-real32-slices
819    Description:
820    
821    Added an entry to the primitive environment
822    (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
823    added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
824    
825    Removed some of the "magic" constants in real64.sml and replaced them
826    with code that generates these values from their corresponding
827    integer counterparts.
828    
829    Made all(?) the slice-related changes to the Basis and made everything
830    compile again...
831    
832    ----------------------------------------------------------------------
833    Name: Matthias Blume (blume (at) tti - c (dot) org)
834    Date: 2003/09/15 17:45:00 CDT
835    Tag: blume-20030915-rbase
836    Description:
837    
838    Fixed bug in Real.fromLargeInt.
839    
840    ----------------------------------------------------------------------
841    Name: Matthias Blume (blume (at) tti - c (dot) org)
842    Date: 2003/09/13 18:11:00 CDT
843    Tag: blume-20030913-libinstall
844    Description:
845    
846    Minor bugfix in config/libinstall (set anchor with path to
847    standalone tool after installing it, otherwise libraries that
848    need ml-lex or ml-yacc won't compile the first time the installer
849    runs).
850    
851    ----------------------------------------------------------------------
852    Name: Matthias Blume (blume (at) tti - c (dot) org)
853    Date: 2003/09/12 11:45:00 CDT
854    Tag: blume-20030912-various
855    Description:
856    
857     - fixed bug in Real.toLargeInt
858     - fixed bug in Posix.ProcEnv.times
859     - changed inputLine functions to return an option
860     - minor installer improvements / bugfixes
861     - changed default @SMLalloc parameter for x86/celeron to 64k
862    
863    ----------------------------------------------------------------------
864    Name: Matthias Blume (blume (at) tti - c (dot) org)
865    Date: 2003/09/09 22:00:00 CDT
866    Tag: Release_110_43
867    Description:
868    
869        New working release 110.43.  New bootfiles.
870    
871    ----------------------------------------------------------------------
872    Name: Matthias Blume (blume (at) tti - c (dot) org)
873    Date: 2003/09/09 19:20:00 CDT
874    Tag: blume-20030909-installer
875    Description:
876    
877    Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
878    Modified config/install.bat to take advantage of it.  Also modified
879    config/install.sh (and called it config/new-install.sh) to take advantage
880    of it on Unix systems.  (The SML code is (supposed to be) platform-
881    independent.)
882    
883    The installer can now install everything under Win32
884    as well as under *nix as long as it compiles.
885    
886    Other changes:
887    
888      - made CML compile again under Win32
889      - made eXene compile under Win32 (by providing a fake structure UnixSock
890        and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
891      - fixed a bug in nowhere: it assumed that type OS.Process.status is the
892        same as type int;  under Win32 it isn't
893      - fixed some slice-related problems in the win32-specific parts of CML
894      - added a functor argument "sameVol" to os-path-fn.sml in the Basis
895        (under Win32, the volume name is case-insensitive, and the
896        OS.Path code compares volume names for equality)
897    
898    ----------------------------------------------------------------------
899    Name: Matthias Blume (blume (at) tti - c (dot) org)
900    Date: 2003/09/08 11:55:00 CDT
901    Tag: blume-20030908-fullpath
902    Description:
903    
904    Made Win32 version of OS.FileSys.fullPath return current directory
905    when given an empty string.  This is what the spec says, and incidentally,
906    CM depends on it.  (CM otherwise goes into an infinite loop in certain
907    cases when presented with the name of a non-existing .cm file.)
908    
909    ----------------------------------------------------------------------
910    Name: Matthias Blume (blume (at) tti - c (dot) org)
911    Date: 2003/09/04 16:30:00 CDT
912    Tag: blume-20030905-slices-etc
913    Description:
914    
915      1. Changed interface to vectors and arrays in Basis to match
916         (draft) Basis spec.
917      2. Added signatures and implementations of slices according to
918         Basis spec.
919      3. Edited source code throughout the system to make it compile again
920         under 1. and 2.  (In some cases code had to be added to have it
921         match the new signatures.)
922      4. MLRISC should be backward-compatible: the copies of the originals
923         of files that needed to change under 3. were retained, the .cm files
924         check the compiler version number and use old versions when
925         appropriate.
926      5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
927         dirstream -> string option (in accordance with Basis spec).
928      6. When generating code that counts lines, ml-lex used function
929         CharVector.foldli, taking advantage of its old interface.
930         This has been replaced with the corresponding code from
931         CharVectorSlice.  (html-lex must be re-lexed!)
932      7. BitArray in smlnj-lib/Util has been extended/modified to match the
933         new MONO_ARRAY signature.  (Do we need BitArraySlice?)
934      8. Removed temporary additions (fromInternal, toInternal) from the
935         (now obsolete) IntInf in smlnj-lib/Util.
936      9. Cleaned up structure Byte.
937     10. Added localOffset, scan, and fromString to Date (according to spec).
938         Cleaned/corrected implementation of Date.
939         (Still need to check for correctness; implement better canonicalizeDate.)
940     11. Added "scan" to signature IEEE_REAL.
941     12. Some improvements to IntInf [in particular: efficiency-hack for
942         mod and rem when second operand is 2 (for parity checks).]
943     13. Changed representation of type Time.time, using a single IntInf.int
944         value counting microseconds.  This considerably simplified the
945         implementation of structure Time.  We now support negative time
946         values; scan and fromString handle signs.
947     14. Functor PrimIO now takes two additional arguments (VectorSlice and
948         ArraySlice).
949    
950    ----------------------------------------------------------------------
951    Name: Matthias Blume (blume (at) tti - c (dot) org)
952    Date: 2003/08/28 17:00:00 CDT
953    Tag: blume-20030828-intinf
954    Description:
955    
956    This is a major update which comes with a version number bump
957    (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
958    and an implementation of IntInf in the Basis.
959    
960    There are a fairly large number of related changes and updates throughout
961    the system:
962    
963    Basis:
964            - Implemented IntInf.
965            - Made LargeInt a projection of IntInf (by filtering through INTEGER).
966            - Added some missing Real64 operations, most notably Real.toLargeInt.
967            - Added FixedInt as a synonym for Int32.
968    
969    compiler:
970            * Added support for a built-in intinf type.
971              - literals
972              - pattern matching
973              - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
974              - overloading on literals and operations
975    
976            This required adding a primitive type intinf, some additional
977            primops, and implementations for several non-trivial intinf
978            operations in Core.  (The intinf type is completely abstract
979            to the compiler; all operations get delegated back to the Core.)
980    
981            * Intinf equality is handled by polyequal.  However, the compiler
982            does not print its usual warning in this case (since polyequal
983            is the right thing to do there).
984    
985            * Improved the organization of structure InlineT.
986    
987            * A word about conversion primops:
988            If conversions involving intinf do not cancel out during
989            CPS contract, then the compiler must insert calls to Core functions.
990            Since all core access must be resolved already during the FLINT
991            translate phase, it would be too late a the time of CPS contract
992            to add new Core calls.  For this reason, conversion primops
993            for intinf carry two arguments:  1. the numeric argument that
994            they are supposed to convert, and 2. the Core function that
995            can help with this conversion if necessary.  If CPS contract
996            eliminates a primop, then the associated Core function becomes
997            dead and goes away.  Intinf conversion primops that do not get
998            eliminated by CPS contract get rewritten into calls of their
999            core functions by a separate, new phase.
1000    
1001    interactive system:
1002            - Control.Print.intinfDepth controls max length of intinf constants
1003            being printed. (Analogous to Control.Print.stringDepth.)
1004            - Cleanup in printutil and pputil: got rid of unused stuff and
1005            duplicates; replaced some of the code with code that makes better
1006            use of library functionality.
1007    
1008    CM:
1009            Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
1010            are no longer silent.
1011    
1012    CKIT:
1013            Fixed mismatched uses of Int32 and LargeInt.  I always decided
1014            in favor of LargeInt -- which is now the same as IntInf.
1015            CKIT-knowledgable people should check whether this is what's
1016            intended and otherwise change things back to using Int32 or
1017            FixedInt.
1018    
1019    Throughout the code:
1020            Started using IntInf.int literals and built-in operations
1021            (e.g., comparison with 0) where this seems appropriate.
1022    
1023    
1024    ----------------------------------------------------------------------
1025    Name: Dave MacQueen (dbm@cs.uchicago.edu)
1026    Date: 2003/08/13 11:36:00 CDT
1027    Tag: dbm-20030813-mcz-merge1
1028    Description:
1029    
1030    Merging changes from the mcz-branch development branch into trunk.
1031    These changes involve replacement of the emulated old prettyprinter
1032    interface with direct use of the SML/NJ Lib PP library, and fixing
1033    of a couple of bugs (895, 1186) relating to error messages.  A new
1034    prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
1035    has been added.
1036    
1037    ----------------------------------------------------------------------
1038    Name: Matthias Blume (blume (at) tti - c (dot) org)
1039    Date: 2003/08/11 15:45:00 CDT
1040    Tag: blume-20030811-windows
1041    Description:
1042    
1043    Version number bumped to 110.42.9.  NEW BOOTFILES!!!
1044    
1045        http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
1046    
1047    This patch restores SML/NJ's ability to run under win32.  There are a
1048    number of changes, including fixes for several bugs that had gone
1049    unnoticed until now:
1050    
1051      - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
1052        trying to run the win32 version from within cygwin.)
1053    
1054      - There are a number of simple .bat scripts that substitute for their
1055        corresponding Unix shell-scripts.  (See below.)
1056    
1057      - The internals of ml-build have been modified slightly.  The main
1058        difference is that instead of calling ".link-sml" (or link-sml.bat)
1059        using OS.Process.system, the ML process delegates this task back
1060        to the script.  Otherwise problems arise in mixed environments such
1061        as Cygwin where scripts look and work like Unix scripts, but
1062        where OS.Process.system cannot run them.
1063    
1064      - In CM, the srcpath pickler used native pathname syntax -- which
1065        is incorrect in the case of cross-compilation.  The new pickle format
1066        is independent of platform-specific naming conventions.
1067    
1068      - Path configuration files (such as lib/pathconfig) can now choose
1069        between native and standard syntax.  Placing a line of the form
1070    
1071            standard!
1072    
1073        into the file causes all subsequent paths to be interpreted using
1074        CM standard pathname syntax (= Unix conventions); a line
1075    
1076            native!
1077    
1078        switches back to native style.  This was needed so that
1079        path config files can be written portably, see src/system/pathconfig.
1080    
1081      - Runtime system:
1082    
1083          - win32-filesys.c:  get_file_time and set_file_time now
1084            access modification time, not creation time.
1085    
1086          - I/O code made aware of new array representation.
1087    
1088          - Bug fixes in X86.prim.masm.
1089    
1090       - src/system/makeml made aware of win32. (For use under cygwin
1091            and other Unix-environments for windows.)
1092    
1093       - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
1094         which caused BinIO.inputAll to fail consistently.
1095    
1096    .bat scripts:
1097    
1098       Windows .bat scripts assume that SMLNJ_HOME is defined.
1099    
1100       - sml.bat, ml-yacc.bat, ml-lex.bat:  Driver scripts for standalone
1101         applications (sml, ml-yacc, ml-lex).
1102       - ml-build.bat: analogous to ml-build.
1103       - config\install.bat:  Analogous to config/install.sh.  This requires
1104         that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
1105         (nmake etc. must be on the path, and vcvars32 must have been run.)
1106         Moreover, sources for ml-lex and ml-yacc need to exist under src,
1107         and the bootfile hierarchy must have been unpacked under
1108         sml.boot.x86-win32.
1109         The script is very primitive and does a poor job at error checking.
1110         It only installs the base system, ml-lex, and ml-yacc.  No other
1111         libraries are being installed (i.e., you get only those that
1112         are part of the compiler.)
1113       - link-sml.bat:  analogous to .link-sml, but not currently used
1114    
1115    Unrelated bug fixes:
1116    
1117      - ml-nlffigen now exports structures ST_* corresponding to incomplete
1118        types.
1119      - Added getDevice to PP/src/pp-debug-fn.sml.  (Would not compile
1120        otherwise.)
1121    
1122    ----------------------------------------------------------------------
1123    Name: Dave MacQueen (macqueen@cs.uchicago.edu)
1124    Date: 2003/06/17
1125    Tag: macqueen-20030617-bug895
1126    Description:
1127    
1128    Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
1129    Tag will be used for new development branch (mcz-branch) for
1130    use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
1131    
1132    ----------------------------------------------------------------------
1133    Name: Matthias Blume (blume (at) tti - c (dot) org)
1134    Date: 2003/05/27 16:55:00 CDT
1135    Tag: blume-20030527-polyeq
1136    Description:
1137    
1138    Tried to eliminated most cases of polymorphic equality.
1139    
1140    ----------------------------------------------------------------------
1141    Name: Matthias Blume (blume (at) tti - c (dot) org)
1142    Date: 2003/05/21 17:45:00 CDT
1143    Tag: blume-20030517-complete
1144    Description:
1145    
1146    Two changes:
1147    
1148      1. Added a flag for controlling whether non-exhaustive bindings will
1149         be treated as errors (default is false).
1150      2. Cleaned up the *entire* source tree so that CMB.make goes through
1151         without a single non-exhaustive match- or bind warning.
1152    
1153    ----------------------------------------------------------------------
1154    Name: Matthias Blume (blume (at) tti - c (dot) org)
1155    Date: 2003/05/17 10:20:00 CDT
1156    Tag: blume-20030517-absyn
1157    Description:
1158    
1159    1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
1160    
1161       This mainly affects the quality of error messages.  However, some
1162       of the code is now more straightforward than before. (Treatment of
1163       the above four constructs in translate.sml is much simpler than
1164       the "macro-expansion" that was going on before.  Plus, the mach-
1165       compiler no longer gets invoked just to be able to compile an
1166       if-expression.)
1167    
1168    2. The ErrorMsg.Error exception is now caught and absorbed by the
1169       interactive loop.
1170    
1171    ----------------------------------------------------------------------
1172    Name: Allen Leung
1173    Date: 2003/05/16 13:05:00 CDT
1174    Tag: leunga-20030516-cygwin-runtime
1175    Description:
1176    
1177        Ported the runtime system to cygwin, which uses the unix
1178    x86-unix bin files.  Missing/buggy features:
1179    
1180       o getnetbyname, getnetbyaddr: these functions seem to be missing in
1181         the Cygwin library.
1182       o Ctrl-C handling may be flaky.
1183       o Windows system calls and Windows I/O are not supported.
1184    
1185       A new set of binfiles is located at:
1186    
1187         http://www.dorsai.org/~leunga/boot.x86-unix.tgz
1188    
1189       This is only needed for bootstrapping the cygwin version of smlnj.
1190       Other x86 versions can use the existing binfiles.
1191    
1192    ----------------------------------------------------------------------
1193    Name: Matthias Blume
1194    Date: 2003/04/08 15:42:00 CDT
1195    Tag: blume-20030408-listpair
1196    Description:
1197    
1198    1. Added a target 'mlrisc' to installer.
1199    
1200    2. Added missing elements to structure ListPair.
1201    
1202    ----------------------------------------------------------------------
1203    Name: Allen Leung
1204    Date: 2003/01/07 10:40:00 EST
1205    Tag: leunga-20030107-int-rem
1206    Description:
1207    
1208    Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
1209    The arguments to the SUBL instruction were swapped.
1210    
1211    ----------------------------------------------------------------------
1212    Name: Matthias Blume
1213    Date: 2002/12/12 16:25:00 EST
1214    Tag: blume-20021212-risc-ra
1215    Description:
1216    
1217    Fixed a serious bug in the rewrite code for FP spilling/reloading that
1218    sent the RA into an infinite loop when floating point registers get
1219    spilled.  (Because of this bug, e.g., nucleic stopped compiling between
1220    110.37 and 110.38.)
1221    There was another set of potential problems related to the handling of
1222    MLRISC annotations (but those did not yet cause real problems, apparently).
1223    
1224    ----------------------------------------------------------------------
1225    Name: Matthias Blume
1226    Date: 2002/12/06 22:40:00 EST
1227    Tag: blume-20021206-cm-fileid
1228    Description:
1229    
1230    Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
1231    This fixes the problem of CM getting confused by files that suddenly
1232    change their identity (e.g., by getting unlinked and recreated by some
1233    text editor such as vi).  There might be a better/cheaper/cleaner way
1234    of doing this, but for now this will have to do.
1235    
1236    ----------------------------------------------------------------------
1237    Name: Matthias Blume
1238    Date: 2002/10/28 09:50:00 EST
1239    Tag: blume-20021028-typecheck
1240    Description:
1241    
1242    Exported structure Typecheck from $smlnj/viscomp/core.cm.
1243    
1244    ----------------------------------------------------------------------
1245    Name: Matthias Blume
1246    Date: 2002/10/17 09:10:00 EDT
1247    Tag: Release_110_42
1248    Description:
1249    
1250    In good old tradition, there has been a slight hiccup so that we have
1251    to patch 110.42 after the fact.   The old release tag has been replaced
1252    (see below).
1253    
1254    The change solves a problem with two competing approaches the
1255    configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
1256    each other's way.
1257    
1258    This change only affects the runtime system code and the installer script.
1259    (No new bootfiles.)
1260    
1261    ----------------------------------------------------------------------
1262    Name: Matthias Blume
1263    Date: 2002/10/16 12:00:00 EDT
1264    Tag: Release_110_42_removed
1265    Description:
1266    
1267    New working release.  New bootfiles.
1268    
1269    ----------------------------------------------------------------------
1270    Name: Matthias Blume
1271    Date: 2002/10/10 13:10:00 EDT
1272    Tag: blume-20021010-ppc-divs
1273    Description:
1274    
1275    The mltree operator DIVS must be implemented with an overflow check on
1276    the PPC because the hardware indicates divide-by-zero using "overflow" as
1277    well.
1278    
1279    ----------------------------------------------------------------------
1280    Name: Matthias Blume
1281    Date: 2002/07/23 11:45:00
1282    Tag: blume-20020723-smlnj-home
1283    Description:
1284    
1285    Sml now senses the SMLNJ_HOME environment variable.  If this is set,
1286    then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
1287    CM_PATHCONFIG is also set), the path configuration file is assumed
1288    to be in $SMLNJ_HOME/lib/pathconfig.  This way one can easily move
1289    the entire tree to some other place and everything will "just work".
1290    
1291    (Companion commands such as ml-build and ml-makedepend also sense this
1292    variable.)
1293    
1294    ----------------------------------------------------------------------
1295    Name: Matthias Blume
1296    Date: 2002/07/12 21:19:00 EDT
1297    Tag: blume-20020712-liveness
1298    Description:
1299    
1300    Exported two useful "step" functions from liveness module (MLRISC).
1301    
1302    ----------------------------------------------------------------------
1303    Name: Matthias Blume
1304    Date: 2002/07/05 16:00 EDT
1305    Tag: Release_110_41
1306    Description:
1307    
1308    New working release.  New bootfiles.
1309    
1310    ----------------------------------------------------------------------
1311    Name: Matthias Blume
1312    Date: 2002/07/05 10:25:00 EDT
1313    Tag: blume-20020705-btimp
1314    Description:
1315    
1316    Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
1317    other clients can set up backtracing support.
1318    
1319    ----------------------------------------------------------------------
1320    Name: Matthias Blume
1321    Date: 2002/06/25 17:23:00 EDT
1322    Tag: blume-20020625-fpmax
1323    Description:
1324    
1325    Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
1326    case.  (The sense of the isNaN test was reversed -- which made min and
1327    max always return their first argument.)
1328    
1329    ----------------------------------------------------------------------
1330    Name: Matthias Blume
1331    Date: 2002/06/11
1332    Tag: blume-20020611-unixpath
1333    Description:
1334    
1335    Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
1336    
1337    ----------------------------------------------------------------------
1338    Name: Matthias Blume
1339    Date: 2002/06/10 16:35:00 EDT
1340    Tag: blume-20020610-ieeereal
1341    Description:
1342    
1343    I back-ported my implementation of IEEEReal.fromString from the
1344    idlbasis-devel branch so that we can test it.
1345    
1346    Another small change is that ppDec tries to give more information
1347    than just "<sig>" in the case of functors.  However, this code is
1348    broken in some mysterious way if the functor's body's signature
1349    has not been declared by ascription but gets inferred from the
1350    implementation.  This needs fixing...
1351    
1352    ----------------------------------------------------------------------
1353    Name: Matthias Blume
1354    Date: 2002/05/31
1355    Tag: blume-20020531-btrace-mode
1356    Description:
1357    
1358    Resurrected SMLofNJ.Internals.BTrace.mode.  (It accidentally fell by
1359    the wayside when I switched over to using Controls everywhere.)
1360    
1361    ----------------------------------------------------------------------
1362    Name: Lal George
1363    Date: 2002/05/23 12:21:40 EDT
1364    Tag: george-20020523-visual-labels
1365    Description:
1366    
1367    Labels are now displayed in the graphical output to make
1368    the fall-through and target blocks obvious.
1369    
1370    ----------------------------------------------------------------------
1371    Name: Matthias Blume
1372    Date: 2002/05/22 11:03:00 EDT
1373    Tag: blume-20020522-shrink
1374    Description:
1375    
1376    John tweaked yesterday's fix for 1131 to handle an out-of-memory
1377    situation that comes up when allocating huge arrays.
1378    
1379    ----------------------------------------------------------------------
1380    Name: Matthias Blume
1381    Date: 2002/05/21 16:00:00 EDT
1382    Tag: Release_110_40
1383    Description:
1384    
1385    New working release (110.40).  New bootfiles.
1386    
1387    [Also: John Reppy fixed GC bug 1131.]
1388    
1389    ----------------------------------------------------------------------
1390    Name: Matthias Blume
1391    Date: 2002/05/21 12:35:00 EDT
1392    Tag: blume-20020521-cmdoc
1393    Description:
1394    
1395    CM documentation update.
1396    
1397    ----------------------------------------------------------------------
1398    Name: Matthias Blume
1399    Date: 2002/05/21 10:55:00 EDT
1400    Tag: blume-20020521-misc
1401    Description:
1402    
1403    - John tweaked runtime to be silent on heap export (except when
1404      GC messages are on).
1405    - I added a few more things (cross-compiling versions of CMB) to
1406      config/preloads (as suggestions).
1407    
1408    ----------------------------------------------------------------------
1409    Name: Matthias Blume
1410    Date: 2002/05/20 22:25:00 EDT
1411    Tag: blume-20020520-controls
1412    Description:
1413    
1414    - Added ControlUtil structure to control-lib.cm.
1415    - Use it throughout.
1416    - Used Controls facility to define MLRISC controls (as opposed to
1417      registering MLRISC control ref cells with Controls after the fact)
1418    - Fixed messed-up controls priorities.
1419    
1420    * Removed again all the stuff from config/preloads that one wouldn't
1421      be able to preload at the time the initial heap image is built.
1422      (Many libraries, e.g., CML, do not exist yet at this time.  The
1423       only libraries that can be preloaded via config/preloads are those
1424       that come bundled with the bootfiles.)
1425    
1426    ----------------------------------------------------------------------
1427    Name: Matthias Blume
1428    Date: 2002/05/20 10:59:00 EDT
1429    Tag: blume-20020520-preloads
1430    Description:
1431    
1432    Added a lot of commented-out suggestions for things to be included
1433    in config/preloads.
1434    
1435    ----------------------------------------------------------------------
1436    Name: Allen Leung
1437    Date: 2002/05/18 14:20:00 EDT
1438    Tag: leunga-20020518-mdl
1439    Description:
1440    
1441    o Made the mdl tool stuff compile and run again.
1442    o I've disabled all the stuff that depends on RTL specifications; they
1443      are all badly broken anyway.
1444    
1445    ----------------------------------------------------------------------
1446    Name: Matthias Blume
1447    Date: 2002/05/17 16:49:00 EDT
1448    Tag: blume-20020517-controls
1449    Description:
1450    
1451    0. John Reppy made several modifications to the SML/NJ library.
1452       In particular, there is a shiny new controls-lib.cm.
1453    
1454    1. Pushed new controls interface through compiler so that everything
1455       compiles again.
1456    
1457    2. Added FormatComb and FORMAT_COMB to the CML version of the
1458       SML/NJ library (so that CML compiles again).
1459    
1460    3. Modified init scripts because XXX_DEFAULT environment variables
1461       are no longer with us.  (Boot-time initialization is now done
1462       using the same environment variables that are also used for
1463       startup-time initialization of controls.)
1464    
1465    ----------------------------------------------------------------------
1466    Name: Lal George
1467    Date: 2002/05/15 09:20:10 EDT
1468    Tag: george-20020515-pseudo-op-decls
1469    Description:
1470    
1471            All pseudo-ops emitted before the first segment declaration
1472    such as TEXT, DATA, and BSS directives are assumed to be global
1473    declarations and are emitted first in the assembly file. This is
1474    useful in a number of situations where one has pseudo-ops that are not
1475    specific to any segment, and also works around the constraint that one
1476    cannot have client pseudo-ops in the TEXT segment.
1477    
1478            Because no segment is associated with these declarations it is
1479    an error to allocate any space or objects before the first segment
1480    directive and an exception will be raised. However, we cannot make
1481    this check for client pseudo-ops.
1482    
1483            These top level declarations are a field in the CFG graph_info.
1484    In theory you can continue to add to this field after the CFG has been
1485    built -- provided you know what you are doing;-)
1486    
1487    ----------------------------------------------------------------------
1488    Name: Matthias Blume
1489    Date: 2002/05/13 16:40:00 EDT
1490    Tag: blume-20020513-pp-etc
1491    Description:
1492    
1493    A few minor bugfixes:
1494    
1495      - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
1496        (Bogus printouts for redefined bindings still occur.  Compiler
1497        bug should no longer occur now.  We need to redo the prettyprinter
1498        from scratch.)
1499    
1500      - CM pathname printer now also adds escape sequences for ( and )
1501    
1502      - commend and docu fixes for ml-nlffi
1503    
1504    ----------------------------------------------------------------------
1505    Name: Matthias Blume
1506    Date: 2002/05/10 16:40:00 EDT
1507    Tag: blume-20020510-erg-textio
1508    Description:
1509    
1510    Applied the following bugfix provided by Emden Gansner:
1511    
1512        Output is corrupted when outputSubstr is used rather than output.
1513    
1514        The problem occurs when a substring
1515    
1516            ss = (s, dataStart, dataLen)
1517    
1518        where dataStart > 0, fills a stream buffer with avail bytes left.
1519        avail bytes of s, starting at index dataStart, are copied into the
1520        buffer, the buffer is flushed, and then the remaining dataLen-avail
1521        bytes of ss are copied into the beginning of the buffer. Instead of
1522        starting this copy at index dataStart+avail in s, the current code
1523        starts the copy at index avail.
1524    
1525        Fix:
1526        In text-io-fn.sml, change line 695 from
1527             val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
1528        to
1529             val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
1530    
1531    ----------------------------------------------------------------------
1532    Name: Matthias Blume
1533    Date: 2002/04/12 13:55:00 EDT
1534    Tag: blume-20020412-assyntax
1535    Description:
1536    
1537    1. Grabbed newer assyntax.h from the XFree86 project.
1538    2. Fiddled with how to compile X86.prim.asm without warnings.
1539    3. (Very) Minor cleanup in CM.
1540    
1541    ----------------------------------------------------------------------
1542    Name: Matthias Blume
1543    Date: 2002/04/01 (no joke!) 17:07:00 EST
1544    Tag: blume-20020401-x86div
1545    Description:
1546    
1547    Added full support for div/mod/rem/quot on the x86, using the machine
1548    instruction's two results (without clumsily recomputing the remainder)
1549    directly where appropriate.
1550    
1551    Some more extensive power-of-two support was added to the x86 instruction
1552    selector (avoiding expensive divs, mods, and muls where they can be
1553    replaced with cheaper shifts and masks).  However, this sort of thing
1554    ought to be done earlier, e.g., within the CPS optimizer so that
1555    all architectures benefit from it.
1556    
1557    The compiler compiles to a fixed point, but changes might be somewhat
1558    fragile nevertheless.  Please, report any strange things that you might
1559    see wrt. div/mod/quot/rem...
1560    
1561    ----------------------------------------------------------------------
1562    Name: Matthias Blume
1563    Date: 2002/03/29 17:22:00
1564    Tag: blume-20020329-div
1565    Description:
1566    
1567    Fixed my broken div/mod logic.  Unfortunately, this means that the
1568    inline code for div/mod now has one more comparison than before.
1569    Fast paths (quotient > 0 or remainder = 0) are not affected, though.
1570    The problem was with quotient = 0, because that alone does not tell
1571    us which way the rounding went.  One then has to look at whether
1572    remainder and divisor have the same sign...  :(
1573    
1574    Anyway, I replaced the bootfiles with fresh ones...
1575    
1576    ----------------------------------------------------------------------
1577    Name: Matthias Blume
1578    Date: 2002/03/29 14:10:00 EST
1579    Tag: blume-20020329-inlprims
1580    Description:
1581    
1582    NEW BOOTFILES!!!    Version number bumped to 110.39.3.
1583    
1584    Primops have changed. This means that the bin/boot-file formats have
1585    changed as well.
1586    
1587    To make sure that there is no confusion, I made a new version.
1588    
1589    
1590    CHANGES:
1591    
1592    * removed REMT from mltree (remainder should never overflow).
1593    
1594    * added primops to deal with divisions of all flavors to the frontend
1595    
1596    * handled these primops all the way through so they map to their respective
1597      MLRISC support
1598    
1599    * used these primops in the implementation of Int, Int32, Word, Word32
1600    
1601    * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
1602    
1603    * parameterized INLMIN, INLMAX, and INLABS by a numkind
1604    
1605    * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
1606      floating point
1607    
1608    * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
1609      and Real (but Real.abs maps to a separate floating-point-only primop)
1610    
1611    
1612    TODO items:
1613    
1614    * Hacked Alpha32 instruction selection, disabling the selection of REMx
1615      instructions because the machine instruction encoder cannot handle
1616      them.  (Hppa, PPC, and Sparc instruction selection did not handle
1617      REM in the first place, and REM is supported by the x86 machine coder.)
1618    
1619    * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
1620      selection phase.  (The two can be streamlined because the hardware
1621      delivers both quotient and remainder at the same time anyway.)
1622    
1623    * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
1624      (Currently the behavior is inconsistent both across architectures and
1625      wrt. the draft Basis spec.)
1626    
1627    * Word8 should eventually be handled natively, too.
1628    
1629    * There seems to be one serious bug in mltree-gen.sml.  It appears, though,
1630      as if there currently is no execution path that could trigger it in
1631      SML/NJ.  (The assumptions underlying functions arith and promotable do not
1632      hold for things like multiplication and division.)
1633    
1634    ----------------------------------------------------------------------
1635    Name: Matthias Blume
1636    Date: 2002/03/27 16:27:00 EST
1637    Tag: blume-20020327-mlrisc-divisions
1638    Description:
1639    
1640    Added support for all four division operations (ML's div, mod, quot,
1641    and rem) to MLRISC.  In the course of doing so, I also rationalized
1642    the naming (no more annoying switch-around of DIV and QUOT), by
1643    parameterizing the operation by div_rounding_mode (which can be either
1644    DIV_TO_ZERO or DIV_TO_NEGINF).
1645    
1646    The generic MLTreeGen functor takes care of compiling all four
1647    operations down to only round-to-zero div.
1648    
1649    Missing pieces:
1650    
1651      * Doing something smarter than relying on MLTreeGen on architectures
1652        like, e.g., the x86 where hardware division delivers both quotient and
1653        remainder at the same time.  With this, the implementation of the
1654        round-to-neginf operations could be further streamlined.
1655    
1656      * Remove inlining support for div/mod/rem from the frontend and replace it
1657        with primops that get carried through to the backend.  Do this for all
1658        int and word types.
1659    
1660    ----------------------------------------------------------------------
1661    Name: Matthias Blume
1662    Date: 2002/03/25 17:25:00 EST
1663    Tag: blume-20020325-divmod
1664    Description:
1665    
1666    I improved (hopefully without breaking them) the implementation of Int.div,
1667    Int.mod, and Int.rem.   For this, the code in translate.sml now takes
1668    advantage of the following observations:
1669    
1670      Let  q = x quot y      r = x rem y
1671           d = x div  y      m = x mod y
1672    
1673    where "quot" is the round-to-zero version of integer division that
1674    hardware usually provides.  Then we have:
1675    
1676         r = x - q * y        where neither the * nor the - will overflow
1677         d = if q >= 0 orelse x = q * y then q else q - 1
1678                              where neither the * nor the - will overflow
1679         m = if q >= 0 orelse r = 0 then r else r + y
1680                              where the + will not overflow
1681    
1682    This results in substantial simplification of the generated code.
1683    The following table shows the number of CFG nodes and edges generated
1684    for
1685            fun f (x, y) = x OPER y
1686            (* with OPER \in div, mod, quot, rem *)
1687    
1688    
1689        OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
1690        --------------------------------------------------------
1691         div |         24 |         39 |         12 |         16
1692         mod |         41 |         71 |         12 |         16
1693        quot |          8 |         10 |          8 |         10
1694         rem |         10 |         14 |          8 |         10
1695    
1696    
1697    ----------------------------------------------------------------------
1698    Name: Matthias Blume
1699    Date: 2002/03/25 22:06:00 EST
1700    Tag: blume-20020325-cprotobug
1701    Description:
1702    
1703    Fixed a bug in cproto (c prototype decoder).
1704    
1705    ----------------------------------------------------------------------
1706    Name: Matthias Blume
1707    Date: 2002/03/25 16:00:00 EST
1708    Tag: blume-20020325-raw-primops
1709    Description:
1710    
1711    I did some cleanup to Allen's new primop code and
1712    replaced yesterday's bootfiles with new ones.
1713    (But they are stored in the same place.)
1714    
1715    ----------------------------------------------------------------------
1716    Name: Matthias Blume
1717    Date: 2002/03/24 22:40:00 EST
1718    Tag: blume-20020324-bootfiles
1719    Description:
1720    
1721    Made the bootfiles that Allen asked for.
1722    
1723    ----------------------------------------------------------------------
1724    Name: Allen Leung
1725    Date: 2002/03/23 15:50:00 EST
1726    Tag: leunga-20020323-flint-cps-rcc-primops
1727    Description:
1728    
1729      1. Changes to FLINT primops:
1730    
1731        (* make a call to a C-function;
1732         * The primop carries C function prototype information and specifies
1733         * which of its (ML-) arguments are floating point. C prototype
1734         * information is for use by the backend, ML information is for
1735         * use by the CPS converter. *)
1736      | RAW_CCALL of { c_proto: CTypes.c_proto,
1737                       ml_args: ccall_type list,
1738                       ml_res_opt: ccall_type option,
1739                       reentrant : bool
1740                     } option
1741       (* Allocate uninitialized storage on the heap.
1742        * The record is meant to hold short-lived C objects, i.e., they
1743        * are not ML pointers.  With the tag, the representation is
1744        * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
1745        *)
1746      | RAW_RECORD of {tag:bool,sz:int}
1747      and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
1748    
1749      2.  These CPS primops are now overloaded:
1750    
1751           rawload of {kind:numkind}
1752           rawstore of {kind:numkind}
1753    
1754          The one argument form is:
1755    
1756             rawload {kind} address
1757    
1758          The two argument form is:
1759    
1760             rawload {kind} [ml object, byte-offset]
1761    
1762      3. RAW_CCALL/RCC now takes two extra arguments:
1763    
1764         a. The first is whether the C call is reentrant, i.e., whether
1765            ML state should be saved and restored.
1766         b. The second argument is a string argument specifying the name of
1767            library and the C function.
1768    
1769         These things are currently not handled in the code generator, yet.
1770    
1771      4. In CProto,
1772    
1773         An encoding type of "bool" means "ml object" and is mapped into
1774         C prototype of PTR.  Note that "bool" is different than "string",
1775         even though "string" is also mapped into PTR, because "bool"
1776         is assigned an CPS type of BOGt, while "string" is assigned INT32t.
1777    
1778      5. Pickler/unpicker
1779    
1780         Changed to handle RAW_RECORD and newest RAW_CCALL
1781    
1782      6. MLRiscGen,
1783    
1784         1. Changed to handle the new rawload/rawstore/rawrecord operators.
1785         2. Code for handling C Calls has been moved to a new module CPSCCalls,
1786            in the file CodeGen/cpscompile/cps-c-calls.sml
1787    
1788      7. Added the conditional move operator
1789    
1790             condmove of branch
1791    
1792         to cps.  Generation of this is still buggy so it is currently
1793         disabled.
1794    
1795    ----------------------------------------------------------------------
1796    Name: Lal George
1797    Date: 2002/03/22 14:18:25 EST
1798    Tag: george-20020322-cps-branch-prob
1799    Description:
1800    
1801    Implemented the Ball-Larus branch prediction-heuristics, and
1802    incorporated graphical viewers for control flow graphs.
1803    
1804    Ball-Larus Heuristics:
1805    ---------------------
1806    See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
1807    
1808    By design it uses the Dempster-Shafer theory for combining
1809    probabilities.  For example, in the function:
1810    
1811        fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
1812    
1813    the ball-larus heuristics predicts that the n=0 is unlikely
1814    (OH-heuristic), and the 'then' branch is unlikely because of the
1815    RH-heuristic -- giving the 'then' branch an even lower combined
1816    probability using the Dempster-Shafer theory.
1817    
1818    Finally, John Reppy's loop analysis in MLRISC, further lowers the
1819    probability of the 'then' branch because of the loop in the else
1820    branch.
1821    
1822    
1823    Graphical Viewing:
1824    ------------------
1825    I merely plugged in Allen's graphical viewers into the compiler. The
1826    additional code is not much. At the top level, saying:
1827    
1828            Control.MLRISC.getFlag "cfg-graphical-view" := true;
1829    
1830    will display the graphical view of the control flow graph just before
1831    back-patching.  daVinci must be in your path for this to work. If
1832    daVinci is not available, then the default viewer can be changed
1833    using:
1834    
1835            Control.MLRISC.getString "viewer"
1836    
1837    which can be set to "dot" or "vcg" for the corresponding viewers. Of
1838    course, these viewers must be in your path.
1839    
1840    The above will display the compilation unit at the level of clusters,
1841    many of which are small, boring, and un-interesting. Also setting:
1842    
1843            Control.MLRISC.getInt "cfg-graphical-view_size"
1844    
1845    will display clusters that are larger than the value set by the above.
1846    
1847    
1848    ----------------------------------------------------------------------
1849    Name: Matthias Blume
1850    Date: 2002/03/21 22:20:00 EST
1851    Tag: blume-20020321-kmp-bugfix
1852    Description:
1853    
1854    Changed the interface to the KMP routine in PreString and fixed
1855    a minor bug in one place where it was used.
1856    
1857    ----------------------------------------------------------------------
1858    Name: Allen Leung
1859    Date: 2002/03/21 20:30:00 EST
1860    Tag: leunga-20020321-cfg
1861    Description:
1862    
1863      Fixed a potential problem in cfg edge splitting.
1864    
1865    ----------------------------------------------------------------------
1866    Name: Allen Leung
1867    Date: 2002/03/21 17:15:00 EST
1868    Tag: leunga-20020321-x86-fp-cfg
1869    Description:
1870    
1871      1. Recoded the buggy parts of x86-fp.
1872    
1873         a. All the block reordering code has been removed.
1874            We now depend on the block placement phases to do this work.
1875    
1876         b. Critical edge splitting code has been simplified and moved into the
1877            CFG modules, as where they belong.
1878    
1879         Both of these were quite buggy and complex.  The code is now much, much
1880         simpler.
1881    
1882      2. X86 backend.
1883    
1884         a. Added instructions for 64-bit support.  Instruction selection for
1885            64-bit has not been committed, however, since that
1886            requires changes to MLTREE which haven't been approved by
1887            Lal and John.
1888    
1889         b. Added support for FUCOMI and FUCOMIP when generating code for
1890            PentiumPro and above.  We only generate these instructions in
1891            the fast-fp mode.
1892    
1893         c. Added cases for JP and JNP in X86FreqProps.
1894    
1895      3. CFG
1896    
1897         CFG now has a bunch of methods for edge splitting and merging.
1898    
1899      4. Machine description.
1900    
1901         John's simplification of MLTREE_BASIS.fcond broke a few machine
1902         description things:
1903    
1904         rtl-build.{sig,sml} and hppa.mdl fixed.
1905    
1906         NOTE: the machine description stuff in the repository is still broken.
1907               Again, I can't put my fixes in because that involves
1908               changes to MLTREE.
1909    
1910    ----------------------------------------------------------------------
1911    Name: Matthias Blume
1912    Date: 2002/03/20 15:55:00 EST
1913    Tag: blume-20020320-kmp
1914    Description:
1915    
1916    Implemented Knuth-Morris-Pratt string matching in PreString and used
1917    it for String.isSubstring, Substring.isSubstring, and
1918    Substring.position.
1919    
1920    (Might need some stress-testing.  Simple examples worked fine.)
1921    
1922    ----------------------------------------------------------------------
1923    Name: Matthias Blume
1924    Date: 2002/03/19 16:37:00 EST
1925    Tag: blume-20020319-witnesses
1926    Description:
1927    
1928    Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
1929    
1930    This implements a generic mechanism for changing constness qualifiers
1931    anywhere within big C types without resorting to outright "casts".
1932    (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
1933    modify the constness at the outermost level.)
1934    The implementation of "convert" is based on the idea of "witness"
1935    values -- values that are not used by the operation but whose types
1936    "testify" to their applicability.  On the implementation side, "convert"
1937    is simply a projection (returning its second curried argument).  With
1938    cross-module inlining, it should not result in any machine code being
1939    generated.
1940    
1941    ----------------------------------------------------------------------
1942    Name: Matthias Blume
1943    Date: 2002/03/15 16:40:00 EST
1944    Tag: blume-20020315-basis
1945    Description:
1946    
1947    Provided (preliminary?) implementations for
1948    
1949      {String,Substring}.{concatWith,isSuffix,isSubstring}
1950    
1951    and
1952    
1953      Substring.full
1954    
1955    Those are in the Basis spec but they were missing in SML/NJ.
1956    
1957    ----------------------------------------------------------------------
1958    Name: Matthias Blume
1959    Date: 2002/03/14 21:30:00 EST
1960    Tag: blume-20020314-controls
1961    Description:
1962    
1963    Controls:
1964    ---------
1965    
1966    1. Factored out the recently-added Controls : CONTROLS stuff and put
1967       it into its own library $/controls-lib.cm.  The source tree for
1968       this is under src/smlnj-lib/Controls.
1969    
1970    2. Changed the names of types and functions in this interface, so they
1971       make a bit more "sense":
1972    
1973          module -> registry
1974          'a registry -> 'a group
1975    
1976    3. The interface now deals in ref cells only.  The getter/setter interface
1977       is (mostly) gone.
1978    
1979    4. Added a function that lets one register an already-existing ref cell.
1980    
1981    5. Made the corresponding modifications to the rest of the code so that
1982       everything compiles again.
1983    
1984    6. Changed the implementation of Controls.MLRISC back to something closer
1985       to the original.  In particular, this module (and therefore MLRISC)
1986       does not depend on Controls.  There now is some link-time code in
1987       int-sys.sml that registers the MLRISC controls with the Controls
1988       module.
1989    
1990    CM:
1991    ---
1992    
1993      * One can now specify the lambda-split aggressiveness in init.cmi.
1994    
1995    ----------------------------------------------------------------------
1996    Name: Allen Leung
1997    Date: 2002/03/13 17:30:00 EST
1998    Tag: leunga-20020313-x86-fp-unary
1999    Description:
2000    
2001    Bug fix for:
2002    
2003    > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
2004    > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
2005    > - fun f(x,(y,z)) = Real.~ y;
2006    > [autoloading]
2007    > [autoloading done]
2008    >       fchsl   (%eax), 184(%esp)
2009    > Error: MLRisc bug: X86MCEmitter.emitInstr
2010    >
2011    > uncaught exception Error
2012    >   raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
2013    
2014    The problem was that the code generator did not generate any fp registers
2015    in this case, and the ra didn't know that it needed to run the X86FP phase to
2016    translate the pseudo fp instruction.   This only happened with unary fp
2017    operators in certain situations.
2018    
2019    ----------------------------------------------------------------------
2020    Name: Matthias Blume
2021    Date: 2002/03/13 14:00:00 EST
2022    Tag: blume-20020313-overload-etc
2023    Description:
2024    
2025    1. Added _overload as a synonym for overload for backward compatibility.
2026       (Control.overloadKW must be true for either version to be accepted.)
2027    
2028    2. Fixed bug in install script that caused more things to be installed
2029       than what was requested in config/targets.
2030    
2031    3. Made CM aware of the (_)overload construct so that autoloading
2032       works.
2033    
2034    ----------------------------------------------------------------------
2035    Name: Matthias Blume
2036    Date: 2002/03/12 22:03:00 EST
2037    Tag: blume-20020312-url
2038    Description:
2039    
2040    Forgot to update BOOT and srcarchiveurl.
2041    
2042    ----------------------------------------------------------------------
2043    Name: Matthias Blume
2044    Date: 2002/03/12 17:30:00 EST
2045    Tag: blume-20020312-version110392
2046    Description:
2047    
2048    Yet another version number bump (because of small changes to the
2049    binfile format).  Version number is now 110.39.2.  NEW BOOTFILES!
2050    
2051    Changes:
2052    
2053      The new pid generation scheme described a few weeks ago was overly
2054      complicated.  I implemented a new mechanism that is simpler and
2055      provides a bit more "stability":  Once CM has seen a compilation
2056      unit, it keeps its identity constant (as long as you do not delete
2057      those crucial CM/GUID/* files).  This means that when you change
2058      an interface, compile, then go back to the old interface, and
2059      compile again, you arrive at the original pid.
2060    
2061      There now also is a mechanism that instructs CM to use the plain
2062      environment hash as a module's pid (effectively making its GUID
2063      the empty string).  For this, "noguid" must be specified as an
2064      option to the .sml file in question within its .cm file.
2065      This is most useful for code that is being generated by tools such
2066      as ml-nlffigen (because during development programmers tend to
2067      erase the tool's entire output directory tree including CM's cached
2068      GUIDs).  "noguid" is somewhat dangerous (since it can be used to locally
2069      revert to the old, broken behavior of SML/NJ, but in specific cases
2070      where there is no danger of interface confusion, its use is ok
2071      (I think).
2072    
2073      ml-nlffigen by default generates "noguid" annotations.  They can be
2074      turned off by specifying -guid in its command line.
2075    
2076    ----------------------------------------------------------------------
2077    Name: Lal George
2078    Date: 2002/03/12 12 14:42:36 EST
2079    Tag: george-20020312-frequency-computation
2080    Description:
2081    
2082    Integrated jump chaining and static block frequency into the
2083    compiler. More details and numbers later.
2084    
2085    ----------------------------------------------------------------------
2086    Name: Lal George
2087    Date: 2002/03/11 11 22:38:53 EST
2088    Tag: george-20020311-jump-chain-elim
2089    Description:
2090    
2091    Tested the jump chain elimination on all architectures (except the
2092    hppa).  This is on by default right now and is profitable for the
2093    alpha and x86, however, it may not be profitable for the sparc and ppc
2094    when compiling the compiler.
2095    
2096    The gc test will typically jump to a label at the end of the cluster,
2097    where there is another jump to an external cluster containing the actual
2098    code to invoke gc. This is to allow factoring of common gc invocation
2099    sequences. That is to say, we generate:
2100    
2101            f:
2102               testgc
2103               ja   L1      % jump if above to L1
2104    
2105            L1:
2106               jmp L2
2107    
2108    
2109    After jump chain elimination the 'ja L1' instructions is converted to
2110    'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end
2111    up being implemented in their long form (if L2 is far away) using:
2112    
2113            jbe     L3      % jump if below or equal to L3
2114            jmp     L2
2115         L3:
2116            ...
2117    
2118    
2119    For large compilation units L2  may be far away.
2120    
2121    
2122    ----------------------------------------------------------------------
2123  Name: Matthias Blume  Name: Matthias Blume
2124  Date: 2002/03/11 13:30:00 EST  Date: 2002/03/11 13:30:00 EST
2125  Tag: blume-20020311-mltreeeval  Tag: blume-20020311-mltreeeval
# Line 23  Line 2130 
2130  ----------------------------------------------------------------------  ----------------------------------------------------------------------
2131  Name: Allen Leung  Name: Allen Leung
2132  Date: 2002/03/11 10:30:00 EST  Date: 2002/03/11 10:30:00 EST
2133  Tag: leunga-20020310-runtime-string0  Tag: leunga-20020311-runtime-string0
2134  Description:  Description:
2135    
2136     The representation of the empty string now points to a     The representation of the empty string now points to a

Legend:
Removed from v.1132  
changed lines
  Added in v.1619

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