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Diff of /sml/trunk/HISTORY

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revision 1137, Tue Mar 12 22:28:55 2002 UTC revision 1650, Wed Oct 13 21:34:01 2004 UTC
# Line 11  Line 11 
11  Date: yyyy/mm/dd  Date: yyyy/mm/dd
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14    
15    ----------------------------------------------------------------------
16    Name: Matthias Blume (blume (at) tti - c (dot) org)
17    Date: 2004/10/13 16:34:00 CDT
18    Tag: blume-20041013-tdp
19    Description:
20    
21    Some rationalization of names:
22    
23       structure BTrace -> structure TDPInstrument
24       etc.
25    
26    This is is preparation of using the original back-trace
27    instrumentation for other purposes.  "TDP" stands for
28    Trace/Debug/Profile.
29    
30    The control flag controlling whether instrumentation is on or off is now
31    registered under a different name, so instead of running sml as
32    
33     sml -Cinstrument.btrace-mode=true
34    
35    one has to say
36    
37     sml -Ctdp.instrument=true
38    
39    ----------------------------------------------------------------------
40    Name: Matthias Blume (blume (at) tti - c (dot) org)
41    Date: 2004/10/11 16:37:00 CDT
42    Tag: blume-20041011-regions
43    Description:
44    
45    Made some minor modifications to elabcore.sml to have source regions
46    be propagated more tightly -- resulting in better (i.e., smaller)
47    regions being reported in error- and debug messages.
48    
49    ----------------------------------------------------------------------
50    Name: Matthias Blume (blume (at) tti - c (dot) org)
51    Date: 2004/10/08 22:50:00 CDT
52    Tag: blume-20041008-cmkw
53    Description:
54    
55    Fixed handling of keywords in .cm files: After seeing "is" the lexer
56    treats subsequent occurrences of "group", "library", "source", "is",
57    "*", and "-" as ordinary identifiers rather than keywords.
58    
59    Most seriously, this fixes a problem with CM's "shell" tool.  The tool
60    is supposed to accept a tool argument called "source", but this did
61    not work because of the clash with the keyword.
62    
63    ----------------------------------------------------------------------
64    Name: Matthias Blume (blume (at) tti - c (dot) org)
65    Date: 2004/10/07 16:00:00 CDT
66    Tag: blume-20041007-cleanup
67    Description:
68    
69    Assorted cleanup work:
70    
71      - got rid of intstrmap in favor of using the library's
72        hash table implementation
73      - threw out most of the pathnames stuff, as it was not used anyway
74      - simplified tokentable implementation
75      - fixed some minor spelling errors
76    
77    ----------------------------------------------------------------------
78    Name: Matthias Blume (blume (at) tti - c (dot) org)
79    Date: 2004/10/06 15:15:15 CDT
80    Tag: blume-20041006-handler
81    Description:
82    
83    Cleaned up the absyn to reflect the invariant that HANDLE always
84    carries a FNexp as part of the type definition.  This eliminates some
85    superfluous sanity checks at runtime down the road.
86    
87    Some minor cleanup of the btrace code.
88    
89    ----------------------------------------------------------------------
90    Name: Matthias Blume (blume (at) tti - c (dot) org)
91    Date: 2004/10/01 10:20:30 CDT
92    Tag: blume-20041001-slave
93    Description:
94    
95    Added hack to make slave mode work in the presence of the version
96    tool.  (Still, since the master does two passes over the code for
97    CMB.make, the release number gets bumped twice when slaves are
98    attached.  I don't know if this is worth fixing...)
99    
100    ----------------------------------------------------------------------
101    Name: Matthias Blume (blume (at) tti - c (dot) org)
102    Date: 2004/09/30 10:55:00 CDT
103    Tag: blume-20040930-version
104    Description:
105    
106    * Moved the "version" magic into its own little library under
107    src/system/smlnj/internal.  This avoids expensive reconstruction
108    of a stable src/compiler/core.cm.
109    
110    * At the same time, structure CompilerVersion is now known as structure
111    SMLNJVersion.
112    
113    * Arranged for the version tool to NOT kick in when rebuilding the system
114      (makeml -rebuild, fixpt).  Otherwise one would never reach a fixpoint.
115      Also, loading the versiontool does not work when rebuilding the system
116      because CM is not properly initialized at that time.
117    
118    ----------------------------------------------------------------------
119    Name: Matthias Blume (blume (at) tti - c (dot) org)
120    Date: 2004/09/29 14:00:00 CDT
121    Tag: blume-20040929-autoversion
122    Description:
123    
124    Implemented some CM magic to have
125        file src/compiler/TopLevel/main/version.sml
126    generated automagically.
127    The version is taken from two files: config/version and config/release.
128    The first is expected to contain a two-part version number such as 110.49.
129    The second should contain a single number, but it may be missing.
130    
131    If the environment variable VERSIONTOOL_BUMP_RELEASE is defined at the
132    time the version tool is loaded (which is the first time you say CMB.make),
133    then the tool will increment the value stored in config/release every
134    time CMB.make is invoked.
135    
136    The binfile format is now insensitive to anything beyond the first
137    two components of a version number, so bumping the release does not render
138    binfiles incompatible.  Auto-bumping can be used to keep track of versions
139    during development without invalidating existing binfiles.
140    
141    In any case, every CMB.make updates the date information in version.sml.
142    (This is the date that is printed in the banner.)
143    
144    ----------------------------------------------------------------------
145    Name: Matthias Blume (blume (at) tti - c (dot) org)
146    Date: 2004/09/28 10:53:00 CDT
147    Tag: blume-20040928-controls
148    Description:
149    
150    Some cleanup of the controls code.
151    
152    ----------------------------------------------------------------------
153    Name: Matthias Blume (blume (at) tti - c (dot) org)
154    Date: 2004/09/27 22:08:00 CDT
155    Tag: blume-20040927-controls
156    Description:
157    
158    Added two pieces of functionality to the Controls interface:
159    
160    1.   val save'restore: 'a control -> unit -> unit
161    
162       grabs the current value of the control in stage 1 and restores it
163       in stage 2.
164    
165    2.   val set' : 'a control * 'a -> unit -> unit
166    
167       stores the given value into the control in stage 2 (i.e., delayed)
168       but does all error checking in stage 1.
169       (This is for string controls that need to do parse their argument --
170        something that might fail.  In some cases, notably in CM, one
171        already knows the intended argument but wants to delay the actual
172        assignment until a time when error recovery would be more difficult.)
173    
174    Changed the handling of controls in tool arguments to classes "sml" and
175    "lazysml":
176       - use Controls.save'restore as a more robust way of restoring the
177         old value (in particular: without having to re-parse the string)
178       - use controls to handle the "overload" keyword in the init group
179         (I believe this change actually fixes a long-standing obscure bug.)
180    
181    ----------------------------------------------------------------------
182    Name: Matthias Blume (blume (at) tti - c (dot) org)
183    Date: 2004/09/27 17:00:00 CDT
184    Tag: blume-20040927-lazysml
185    Description:
186    
187    Added a new tool class called "lazysml" to CM's tool chest.  The only
188    difference to "sml" is that compilation is done with Control.lazysml
189    set to true.  A source of class "lazysml" is automatically recognized
190    by a file name suffix of ".lml".
191    
192    In addition to the above feature, the original class "sml" now also
193    supports a tool argument "lazy" which has the same effect.  As a
194    result, the following three lines are equivalent:
195    
196        foo.sml : lazysml
197        foo.sml : sml (lazy)
198        foo.sml (lazy)
199    
200    The setting goes into effect both during parsing and during
201    compilation.  The original setting is restored right after parsing and
202    after compilation, respectively.
203    
204    In addition to all the above, there is also a general mechanism to set
205    ANY of the "controls" that are available at the command line via
206    "-C..." on a per-sml-file basis.  The same rules that apply for "lazy"
207    apply as well. (In fact, "lazy" is implemented as a special case of
208    the general mechanism.)
209    
210    The .cm file syntax uses a new keyword tool argument called "with".
211    There are several ways of indicating the desired settings:
212    
213        foo.sml (with:parser.quotations=true)
214        foo.sml (with:(name:parser.quotations value:true))
215        foo.sml (with:(name:name1 value:value1 name:name2 value:value2 ...))
216        foo.sml (with:(name1=value1 name2=value2 ...))
217        foo.sml (with:(name1=value1 name:name2 value:value2 name3=value3 ...))
218    
219        etc.
220    
221    Another possible abbreviation is to leave out the =v or value:v part
222    if the name refers to a boolean control (in which case the value is
223    taken to be true).  Thus, one could get lazy sml also by saying:
224    
225        foo.sml (with:parser.lazy-keyword=true)
226        foo.sml (with:parser.lazy-keyword)
227        foo.sml (with:(name:parser.lazy-keyword value:true))
228        foo.sml (with:(name:parser.lazy-keyword))
229    
230    ----------------------------------------------------------------------
231    Name: Matthias Blume (blume (at) tti - c (dot) org)
232    Date: 2004/09/24 16:22:00 CDT
233    Tag: blume-20040924-ppc-long-branch
234    Description:
235    
236    Turned message about "emiting long form of branch" off by default.
237    Added a control flag to turn it back on when desired.
238    
239    ----------------------------------------------------------------------
240    Name: Matthias Blume (blume (at) tti - c (dot) org)
241    Date: 2004/09/24 16:05:00 CDT
242    Tag: blume-20040924-rounding
243    Description:
244    
245    Applied patch for setting rounding modes under Mac OS X.  Thanks to
246    Melissa O'Neill for providing the code!
247    
248    ----------------------------------------------------------------------
249    Name: Matthias Blume (blume (at) tti - c (dot) org)
250    Date: 2004/09/23 17:30:00 CDT
251    Tag: blume-20040923-envvars
252    Description:
253    
254    1. Changed definition of type ControlRegistry.registry_tree to
255       include control_info (i.e., the name of the controlling environment
256       variable).
257    
258    2. Added command-line flags -e and -E to print the names of environment
259       variables that can be used to control internal settings.
260       (This uses the new API mentioned in 1.)
261    
262    ----------------------------------------------------------------------
263    Name: Matthias Blume (blume (at) tti - c (dot) org)
264    Date: 2004/09/13 16:50:00 CDT
265    Tag: Release_110_49
266    Description:
267    
268    New working version (110.49).  NEW BOOTFILES!
269    
270    ----------------------------------------------------------------------
271    Name: Matthias Blume
272    Date: 2004/09/13 16:20:00 CDT
273    Tag: blume-20040913-config-mlrisc
274    Description:
275    
276    Put target "mlrisc" back into the default list.
277    (There is no harm in having it, and some users have expressed their
278    wish to have "mlrisc" included by default.)
279    
280    ----------------------------------------------------------------------
281    Name: John Reppy
282    Date: 2004/09/13
283    Tag: jhr-20040913-signals
284    Description:
285    
286    Fixed the signal masking code to properly nest mask/unmask operations
287    on a per-signal basis.
288    
289    ----------------------------------------------------------------------
290    Name: Matthias Blume (blume (at) tti - c (dot) org)
291    Date: 2004/09/08 13:20:00 CDT
292    Tag: blume-20040908-heap-magic
293    Description:
294    
295    Bumped the heap macig number to 0x09082004 to account for the changed
296    layout of the ML frame under MacOS X.
297    
298    ----------------------------------------------------------------------
299    Name: Allen Leung (leunga (at) reservoir (dot) com)
300    Date: 2004/09/03 11:26:00 EST
301    Tag: leunga-20040903-cygwin-install
302    Description:
303    
304       Added a patch to _arch-n-opsys to enable the Cygwin runtime.
305    The Cygwin runtime is turned on by setting the environment
306    variable SMLNJ_CYGWIN_RUNTIME to 1.
307    
308    ----------------------------------------------------------------------
309    Name: Matthias Blume (blume (at) tti - c (dot) org)
310    Date: 2004/08/31 17:15:00 CDT
311    Tag: blume-20040831-core
312    Description:
313    
314    Added some exports to src/compiler/core.cm upon request by J. Joemann.
315    
316    ----------------------------------------------------------------------
317    Name: Matthias Blume (blume (at) tti - c (dot) org)
318    Date: 2004/08/30 17:55:00 CDT
319    Tag: blume-20040830-installer
320    Description:
321    
322    Upon request by Johannes Joemann:
323    
324    - improved ML code of installer to fall back to coping when renaming
325      fails (i.e., when source and target are on different file systems);
326      the code compiles but has yet to be tested in anger
327    - removed mlrisc from list of default targets (config/targets)
328    
329    ----------------------------------------------------------------------
330    Name: Matthias Blume (blume (at) tti - c (dot) org)
331    Date: 2004/08/27 17:20:00 CDT
332    Tag: blume-20040827-ptreql
333    Description:
334    
335    Added ptreql primop to structure InlineT (upon request from Larry
336    Paulson).
337    
338    ----------------------------------------------------------------------
339    Name: Allen Leung (leunga (at) reservoir (dot) com)
340    Date: 2004/08/15 21:21:00 EST
341    Tag: leunga-110_48-udgraph
342    Description:
343    
344    Another bug fix from Carl Hauser:
345    
346    diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml
347    > 48c48
348    > <              | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else
349    > e::L)
350    > ---
351    > >              | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L)
352    > Without this, any deletion of an edge in an undirected graph does severe
353    > violence to the graph.
354    
355    ----------------------------------------------------------------------
356    Name: Allen Leung (leunga (at) reservoir (dot) com)
357    Date: 2004/08/10 23:35:00 EST
358    Tag: leunga-110_48-ppc
359    Description:
360    
361       The IBM/MacOS syntax switch on PPC was incorrectly swapped.
362    
363    ----------------------------------------------------------------------
364    Name: Matthias Blume (blume (at) tti - c (dot) org)
365    Date: 2004/08/10 12:00:00 CDT
366    Tag: Release_110_48
367    Description:
368    
369    New working version (110.48).  NEW BOOTFILES!
370    
371    ----------------------------------------------------------------------
372    Name: Allen Leung (leunga (at) reservoir (dot) com)
373    Date: 2004/08/09 12:21:00 EST
374    Tag: leunga-110_47-dijsktra
375    Description:
376    
377    Bug fix from Carl Hauser:
378    
379    single_source_shortest_paths in dijkstra.sml was observed to get wrong
380    answers (by comparing to single_source_shortest_paths in bellman-ford.sml).
381    
382    The problem is that following the expression A.update(dist,s,Num.zero)
383    it is necessary to update the priority queue using Q.decreaseWeight(Q,s).
384    
385    ----------------------------------------------------------------------
386    Name: Matthias Blume (blume (at) tti - c (dot) org)
387    Date: 2004/08/06 18:10:00 CDT
388    Tag: blume-20040806-cmdline
389    Description:
390    
391    Fiddled with handling of command-line options:
392    
393      * sml now quits after processing the command line
394        if -H, -S, -h<n>, or -s<n> appears as the last
395        command-line argument
396      * a new option -q terminates the session when encountered on
397        the command line; subsequent arguments will be ignored
398      * bug fixes: short (erroneous) arguments are no longer ignored
399        completely
400    
401    ----------------------------------------------------------------------
402    Name: Allen Leung (leunga (at) reservoir (dot) com)
403    Date: 2004/08/04 18:17:00 EST
404    Tag: leunga-110_47-ppc-ibm-asm
405    Description:
406    
407      - Added minimal IBM assembly syntax support for PowerPC.
408    
409      - Cygwin: manually changed the file cygwin.def.  Some exported symbols have
410        been altered in the runtime.  We need an automatic way to keep the file
411        in sync.
412    
413    ----------------------------------------------------------------------
414    Name: Matthias Blume (blume (at) tti - c (dot) org)
415    Date: 2004/08/04 14:00:00 CDT
416    Tag: Release_110_47
417    Description:
418    
419    New working version (110.47).  NEW BOOTFILES!
420    
421    ----------------------------------------------------------------------
422    Name: Matthias Blume (blume (at) tti - c (dot) org)
423    Date: 2004/08/03 14:25:00 CDT
424    Tag: blume-20040803-callingconv
425    Description:
426    
427    Added low-level support for choosing C calling conventions by
428    twiddling the type of rawccall.  (See
429    src/compiler/Semant/types/cproto.sml for details.)
430    
431    ----------------------------------------------------------------------
432    Name: Matthias Blume (blume (at) tti - c (dot) org)
433    Date: 2004/08/02 15:55:00 CDT
434    Tag: blume-20040802-backout
435    Description:
436    
437    Backed out of change to win32-filesys.c.  The earlier patch to
438    get_file_time caused CM to produce files with the wrong time stamp.
439    
440    ----------------------------------------------------------------------
441    Name: Matthias Blume (blume (at) tti - c (dot) org)
442    Date: 2004/08/02 14:45:00 CDT
443    Tag: blume-20040802-nlffi-win32
444    Description:
445    
446    Added NLFFI support for Win32, adapted from a patch provided by David
447    Hansel.  This is currently completely untested.  Also, the issue
448    concerning stdcall vs. ccall is still unresolved.
449    
450    ----------------------------------------------------------------------
451    Name: Matthias Blume (blume (at) tti - c (dot) org)
452    Date: 2004/07/30 17:55:00 CDT
453    Tag: blume-20040730-various
454    Description:
455    
456    Gearing up towards 110.47...
457    
458    - various minor bugfixes to ml-nlffigen
459    - a beginning of a manual for nlffi
460    
461    - eliminated 'export name=value' in config/install.sh as this does
462      not work with certain versions of /bin/sh
463      (Thanks to David King at Motorola for catching this.)
464    
465    - several bugfixes provided or suggested by David Hansel at Reactive Systems:
466      - added a test for tm==NULL to gmtime.c and localtime.c
467      - applied patch for incorrect GetFileTime under win32
468      - toSeconds -> toMilliseconds in Win32/win32-process.sml
469    
470    ----------------------------------------------------------------------
471    Name: Matthias Blume (blume (at) tti - c (dot) org)
472    Date: 2004/07/21 18:20:00 CDT
473    Tag: blume-20040721-nlffigen
474    Description:
475    
476    - Fixed minor issue in ml-nlffigen: Now generate structure T_foo
477      for a typedef to an incomplete type, but leave out the "typ" member.
478      (This is just for consistency.)
479    - Started to produce what is supposed to become better (i.e., comprehensive)
480      documentation of what ml-nlffigen does and produces.
481    
482    ----------------------------------------------------------------------
483    Name: Matthias Blume (blume (at) tti - c (dot) org)
484    Date: 2004/07/14 16:25:00 CDT
485    Tag: blume-20040714-union
486    Description:
487    
488    Added C_UNION to c-calls/c-types.sml and updated the machinery
489    (ml-nlffigen, cproto.sml) that conveys C function interface
490    information to the code generator.
491    
492    However, the actual architecture-specific implementation of function
493    arguments and results that are C unions is still not implemented.
494    
495    ----------------------------------------------------------------------
496    Name: Allen Leung (leunga (at) reservoir (dot) com)
497    Date: 2004/07/14 14:38:00 EST
498    Tag: leunga-110_46_1-ppc-lwzu
499    Description:
500    
501        Added these instructions to the PowerPC architecture:
502        LBZU(X), LHZU(X), LWZU(X),
503        STWU(X), STFDU, STFSU
504    
505        etc...
506    
507        Note: I haven't added their instruction encoding into the description.
508    
509    ----------------------------------------------------------------------
510    Name: Allen Leung (leunga (at) reservoir (dot) com)
511    Date: 2004/07/13 15:04:00 EST
512    Tag: leunga-110_46_1-ppc-lwarx
513    Description:
514    
515       Added the two instructions LWARX and STWCX to the PowerPC
516    instruction set.
517    
518       A (untested) rewrite of loop-structure.sml.  The old version
519    is completely broken.
520    
521    ----------------------------------------------------------------------
522    Name: Matthias Blume (blume (at) tti - c (dot) org)
523    Date: 2004/07/13 13:50:00 CDT
524    Tag: blume-20040713-nlffi
525    Description:
526    
527    - use paramAlloc to report c-calls with too many arguments
528      (for PPC version where parameter area is pre-allocated)
529    - added ccall_maxargspace to machspec (to implement the above)
530    - made "make" commend in CM's "make" tool configurable
531    - added option (default: on) for passing the name of the SML/NJ's "bin"
532      directory to "make"; the call looks like this:
533    
534         make <options> SMLNJ_BINDIR=<dir> <target>
535    
536      This can be used by the Makefile to, e.g., pick the "right" version
537      of ml-nlffigen.
538    - minor code tweaks
539    
540    ----------------------------------------------------------------------
541    Name: Matthias Blume (blume (at) tti - c (dot) org)
542    Date: 2004/07/12 22:50:00 CDT
543    Tag: blume-110_46_1-macosx-nlffi
544    Description:
545    
546    NLFFI under Mac OS X now working (sort of).  This is largely untested,
547    though.
548    
549    Note:  1. You have to make a new, clean build of the runtime system.
550           2. There are new BOOTFILES, you have to use them!
551              (Doing the bootstrap process yourself would be *very* painful!
552               If you absolutely have to do it, build the system under
553               a different architecture and then cross-compile.)
554    
555    Version bumped to 110.46.1 to account for runtime data format changes.
556    
557    ----------------------------------------------------------------------
558    Name: Matthias Blume (blume (at) tti - c (dot) org)
559    Date: 2004/06/18 14:30:00 CDT
560    Tag: blume-20040618-unix
561    Description:
562    
563    Changed the implementation of structure Unix so that the same stream
564    is returned every time one of the {text,bin}{In,Out}streamOf functions
565    is invoked on the same proc.  This is not what the spec currently
566    says -- although IMO it arguably should.  (See discussion below.)
567    
568    ----------------------------------------------------------------------
569    Name: Matthias Blume (blume (at) tti - c (dot) org)
570    Date: 2004/06/17 18:15:00 CDT
571    Tag: Release_110_46
572    Description:
573    
574    New working version (110.46).  NEW BOOTFILES!
575    
576    ----------------------------------------------------------------------
577    Name: Matthias Blume (blume (at) tti - c (dot) org)
578    Date: 2004/06/17 17:20:00 CDT
579    Tag: blume-20040617-timer-unix
580    Description:
581    
582    Changed the interface of structures Timer and Unix to match the most
583    recent Basis spec.
584    
585    In the case of Unix there still seems to be an open/weird issue:
586    
587       The {text,bin}{In,Out}streamOf functions are supposed to create
588       fresh streams whenever they are called -- as opposed to have them
589       return the same stream every time.  This design is supposed to
590       prevent space leaks caused by proc values hanging on to streams.
591    
592       The reap function, on the other hand, is supposed to close the
593       streams.  This cannot be done without having a handle on the
594       stream in proc after all...
595    
596    I took the liberty to implement the following stopgap solution:
597    
598      The proc value hangs on to the most recently created stream(s).
599      Reap closes those.  If either or both of the two streams hadn't
600      been created at all yet, then reap will close the corresponding
601      file descriptors directly.
602    
603    PS: I don't understand the original space leak argument anymore.  If
604    a proc hangs on to the imperative stream, then I/O operations on those
605    will advance the state of the cached stream and avoid the space leak.
606    
607    ----------------------------------------------------------------------
608    Name: Matthias Blume (blume (at) tti - c (dot) org)
609    Date: 2004/05/28 16:45:00 CDT
610    Tag: blume-20040528-basis
611    Description:
612    
613    Added signature PACK_REAL and exported functor PrimIO.
614    
615    ----------------------------------------------------------------------
616    Name: Matthias Blume (blume (at) tti - c (dot) org)
617    Date: 2004/05/25 16:00:00 CDT
618    Tag: blume-20040525-group-owner
619    Description:
620    
621    CM now ignores (but still accepts) the "owner" information in group
622    descriptions.  The owner of a group is its next enclosing
623    library. Each group must have a unique owner.  (There is a virtual
624    "toplevel" library that owns groups which are not nested within a real
625    library.)  Previously, each group had to explicitly declare its owner,
626    and CM would check that such a declaration is correct.  The new scheme
627    is to have CM check that for each group there is precisely one owning
628    library.
629    
630    The advantage of the new scheme is that the programmer no longer needs
631    to maintain the somewhat annoying owner information.  The downside is
632    that CM cannot enforce the ownership rule across multiple runs of
633    CM.make.  Fortunately, enclosing the same group in two different
634    libraries A and B which are not part of the same program does not
635    cause real problems.
636    
637    ----------------------------------------------------------------------
638    Name: Matthias Blume (blume (at) tti - c (dot) org)
639    Date: 2004/05/20 16:00:00 CDT
640    Tag: blume-20040520-win32
641    Description:
642    
643    Made the win32 version work again.  (Strangely, a misplaced comma had
644    slipped into win32-process.c which prevented the runtime from being
645    compiled correctly.)
646    
647    Also, included a minor addition to ml-build.bat analogous to what was
648    done in blume-20040519-ml-build.
649    
650    ----------------------------------------------------------------------
651    Name: Matthias Blume (blume (at) tti - c (dot) org)
652    Date: 2004/05/19 22:10:00 CDT
653    Tag: blume-20040519-ml-build
654    Description:
655    
656    Arranged for ml-build to clean up after itself a little bit better.
657    The script generates a temporary SML source file and compiles it using
658    CM, so CM generates metadata (GUID, SKEL, objectfile) for it.  It now
659    gets rid of those at the end, so they don't accumulate under .cm.
660    
661    This required a minor change to install.sh because the name of the
662    metadata directory (default: .cm) is actually configurable at
663    installation time.
664    
665    ----------------------------------------------------------------------
666    Name: Matthias Blume (blume (at) tti - c (dot) org)
667    Date: 2004/05/18 15:50:00 CDT
668    Tag: blume-20040518-mkreader
669    Description:
670    
671    Added Posix.IO.mk{Bin,Text}{Reader,Writer} by lifting their respective
672    implementations from internal modules PosixBinPrimIO and PosixTextPrimIO.
673    
674    ----------------------------------------------------------------------
675    Name: Matthias Blume (blume (at) tti - c (dot) org)
676    Date: 2004/05/11 14:35:00 CDT
677    Tag: blume-20040511-win32sock
678    Description:
679    
680    Added previously missing support for many socket-related functions
681    under win32.  Thanks to David Hansel <hansel@reactive-systems.com>
682    for the voluminous patch!
683    
684    (I have not tested this patch under win32 yet.)
685    
686    Here is David's e-mail:
687    
688    Hi,
689    
690    Attached to this email you find a diff against sml/nj 110.45
691    that will enable socket support under Windows.
692    
693    To apply the patch (using unix or cygwin)
694    1) gunzip runtime.diff.gz
695    2) "cd" into "src/runtime" in the source tree of a fresh
696       110.45 installation.
697    3) patch -p 1 < [your/path/to]runtime.diff
698    
699    The code compiles fine but has NOT yet been extensively tested.
700    I only ran a few tests for basic socket client functionality
701    (which worked fine).  Especially the functions that use ioctl
702    are not tested at all and might not work (see below).
703    
704    I implemented this since we want to move to a newer version of sml/nj
705    but need socket support in order to use it.  This is the first time I
706    even had a look at the sml/nj source,  so please review my changes
707    before making this part of the distribution!  Here are a few issues
708    that I think might be better for someone to solve who is more
709    familiar with the sml/nj source (and socket programming):
710    
711    - getnetbyaddr.c and getnetbyname.c will raise a "not implemented"
712      exception since I could not figure out what the windows equivalent
713      of these functions is
714    
715    - In sockets-osdep.h there are a some #include statements that are
716      only used in a few files that include sockets-osdep.h
717    
718    - In smlnj-sock-lib.c, function init_fn() calls WSAStartup() but
719      does not process its return value since I don't know how to
720      report an error upwards.
721    
722    - It would probably be good to have a call to WSACleanup() when
723      the library is unloaded (if there is such a possibility).
724      Otherwise I think Windows will take care of this automatically
725      when the process finishes.
726    
727    - I used ioctlsocket() as a replacement for ioctl() but I have
728      no idea if that is actually the proper replacement on Windows.
729    
730    - All these issues are marked in the code by "FIXME" comments.
731    
732    We use sml/nj extensively in our products and are quite happy
733    with it.  I hope this contribution will help you.
734    
735    Keep up the good work!
736    
737    David
738    
739    ----------------------------------------------------------------------
740    Name: Matthias Blume (blume (at) tti - c (dot) org)
741    Date: 2004/05/11 14:20:00 CDT
742    Tag: blume-20040511-installml
743    Description:
744    
745    Fixed two bugs in installml script.  (Thanks to Vesa A. Norrman for
746    the patch.)
747    
748    ----------------------------------------------------------------------
749    Name: Matthias Blume (blume (at) tti - c (dot) org)
750    Date: 2004/05/11 14:05:00 CDT
751    Tag: blume-20040511-nlffi-netbsd
752    Description:
753    
754    Added support for nlffi under netbsd.  (Thanks to Vesa A. Norrman for
755    the patch.)
756    
757    ----------------------------------------------------------------------
758    Name: Matthias Blume (blume (at) tti - c (dot) org)
759    Date: 2004/05/11 12:05:00 CDT
760    Tag: blume-20040511-exports
761    Description:
762    
763    As per request by Adam Chlipala <adam@hcoop.net>, extended various
764    export lists in compiler-related .cm-files.
765    
766    ----------------------------------------------------------------------
767    Name: Matthias Blume (blume (at) tti - c (dot) org)
768    Date: 2004/05/11 11:35:00 CDT
769    Tag: blume-20040511-allsource
770    Description:
771    
772    The installer now honors the "src-smlnj" target again, although its meaning
773    has changed from "all sources required for the compiler" to "all sources
774    the installer knows about".  In other words, if you enable "src-smlnj"
775    in the "targets" file, then the installer will pull in sources for
776    everything.  (Notice that this refers to source code only.  Compiled
777    code is still only installed for modules that were requested explicitly
778    or which are required for other modules that were requested explicitly.)
779    
780    ----------------------------------------------------------------------
781    Name: Matthias Blume (blume (at) tti - c (dot) org)
782    Date: 2004/04/23 17:40:00 CDT
783    Tag: blume-20040423-ieee-scan
784    Description:
785    
786    Fixed IEEEReal.scan (and .fromString) so that if there is an overflow
787    in the exponent calculation we get INF or ZERO (depending on the mantissa
788    and the sign of the exponent).
789    
790    ----------------------------------------------------------------------
791    Name: Matthias Blume (blume (at) tti - c (dot) org)
792    Date: 2004/04/23 10:40:00 CDT
793    Tag: blume-20040423-ml-build
794    Description:
795    
796    The ml-build script now terminates with a non-0 status when something
797    goes wrong.
798    
799    ----------------------------------------------------------------------
800    Name: Matthias Blume (blume (at) tti - c (dot) org)
801    Date: 2004/04/22 16:35:00 CDT
802    Tag: blume-20040422-Option
803    Description:
804    
805    Made exception Option to be the same as exception Option.Option
806    (as it should be).
807    
808    ----------------------------------------------------------------------
809    Name: Allen Leung (leunga (at) reservoir (dot) com)
810    Date: 2004/03/19 14:40:00 EST
811    Tag: leunga-20040319-cygwin-nlffi
812    Description:
813    
814    Fixed the runtime so that ml-nlffi-lib runs on the cygwin version
815    of SML/NJ.  The problem is that
816    
817       lib = dlopen(NULL, ...)
818       f   = dlsym(lib, "malloc");
819    
820    does not work on Windows unless we explicitly export symbols
821    such as 'malloc' during linking.  We fixed this by explicitly
822    exporting the required symbols with the magic gcc incantation:
823    
824        -Wl,--export-all cygwin.def
825    
826    where cygwin.def is a file containing all the symbols that
827    we wish to export.
828    
829    I suspect this is a Windows problem and we'll have to
830    do the same (somehow with windows compilers) when
831    we build the native win32 version with the system
832    calls LoadLibrary/GetProcAddress.
833    
834    ----------------------------------------------------------------------
835    Name: Matthias Blume (blume (at) tti - c (dot) org)
836    Date: 2004/03/04 16:35:00 CST
837    Tag: blume-20040304-intinf-fmt
838    Description:
839    
840    Fixed problem with IntInf.fmt (sign would show up on the right instead
841    of on the left for BIN, OCT, and HEX).
842    
843    ----------------------------------------------------------------------
844    Name: Matthias Blume (blume (at) tti - c (dot) org)
845    Date: 2004/03/04 11:25:00 CST
846    Tag: blume-20040304-symlinks
847    Description:
848    
849    Fixed problem with installer script (unix only) where bin/ml-yacc and
850    friends pointed (via symlinks) to absolute locations instead of just
851    .run-sml.  This was reported by Vesa A Norrman.
852    
853    ----------------------------------------------------------------------
854    Name: Matthias Blume (blume (at) tti - c (dot) org)
855    Date: 2004/02/13 14:50:00 CST
856    Tag: Release_110_45
857    Description:
858    
859    New working version (110.45). New bootfiles.
860    
861    ----------------------------------------------------------------------
862    Name: Matthias Blume (blume (at) tti - c (dot) org)
863    Date: 2004/01/26 15:15:15 CST
864    Tag: blume-20040126-toplevel
865    Description:
866    
867    Improved handling of exceptions at the interactive toplevel.
868    
869    ----------------------------------------------------------------------
870    Name: Matthias Blume (blume (at) tti - c (dot) org)
871    Date: 2004/01/26 11:25:00
872    Tag: blume-20040126-app
873    Description:
874    
875    Type of top-level "app" corrected.
876    Added code for setting vp_limitPtrMask to Win32-specific runtime.
877    
878    ----------------------------------------------------------------------
879    Name: Matthias Blume (blume (at) tti - c (dot) org)
880    Date: 2003/11/18 17:10 CST
881    Tag: blume-20031118-basis-fiddle
882    Description:
883    
884    - changed Timer interface to what might become the spec
885    - POSIX_FLAGS -> BIT_FLAGS according to spec
886    - some other minor discrepancies wrt. spec eliminated
887    
888    ----------------------------------------------------------------------
889    Name: Matthias Blume (blume (at) tti - c (dot) org)
890    Date: 2003/11/06 12:00:00 CST
891    Tag: Release_110_44
892    Description:
893    
894    New working version (110.44). New bootfiles.
895    
896    ----------------------------------------------------------------------
897    Name: Matthias Blume (blume (at) tti - c (dot) org)
898    Date: 2003/11/04 11:50:00 CST
899    Tag: blume-20031104-move-libraries
900    Description:
901    
902    Eliminated the "dont_move_libraries" directive in config/targets.
903    (The mechanism was broken and could not be fixed easily.  Moreover,
904    there does not seem to be any reason not to move all libraries into
905    lib during installation.  I originally implemented this directive as a
906    backward-compatibility feature when I first introduced the new CM.
907    Now that things have been stable for a long time and going back to the
908    old CM is not an option, there is no reason to keep it around.)
909    
910    ----------------------------------------------------------------------
911    Name: Matthias Blume (blume (at) tti - c (dot) org)
912    Date: 2003/11/03 16:00:00 CST
913    Tag: blume-20031103-installdir
914    Description:
915    
916    Made installer honor INSTALLDIR variable again.  (Thanks to Chris
917    Richards for pointing out the problem and providing the solution.)
918    
919    ----------------------------------------------------------------------
920    Name: Matthias Blume (blume (at) tti - c (dot) org)
921    Date: 2003/10/01 17:05:00 CDT
922    Tag: blume-20031001-lal-mlrisc
923    Description:
924    
925    MLRISC bug fix from Lal.
926    
927    ----------------------------------------------------------------------
928    Name: Matthias Blume (blume (at) tti - c (dot) org)
929    Date: 2003/09/30 16:10:00 CDT
930    Tag: blume-20030930-primio-bat
931    Description:
932    
933    1. Added openVector, nullRd, and nullWr to PRIM_IO.
934    2. Improved .bat files (for Win32 port) to make things work under Win95.
935       (thanks to Aaron S. Hawley for this one)
936    
937    ----------------------------------------------------------------------
938    Name: Matthias Blume (blume (at) tti - c (dot) org)
939    Date: 2003/09/26 16:05:00 CDT
940    Tag: blume-20030926-wrappriv
941    Description:
942    
943    Added missing wrapper for privilege "primitive" in $smlnj/viscomp/core.cm.
944    
945    ----------------------------------------------------------------------
946    Name: Matthias Blume (blume (at) tti - c (dot) org)
947    Date: 2003/09/26 15:00:00 CDT
948    Tag: blume-20030926-110_43_3
949    Description:
950    
951    - additional cleanup
952    - version number bump, NEW BOOTFILES
953    
954    ----------------------------------------------------------------------
955    Name: Matthias Blume (blume (at) tti - c (dot) org)
956    Date: 2003/09/26 12:00:00 CDT
957    Tag: blume-20030926-ppautoload
958    Description:
959    
960    I modified the read-eval-print loop so that the autoloader gets
961    invoked whenever the prettyprinter tries to look up a symbol that
962    is not currently defined in the toplevel environment but which
963    appears in CM's autoload registry.  As a result, we see far fewer of
964    those ?.Foo.Bar.xxx names in the prettyprinter's output.
965    
966    In addition to this I tried to clean up some pieces of the Basis
967    implementation (e.g., Socket, Word8Array) in order to prevent other
968    instances of these ?.Foo.Bar.xxx names from being printed.
969    
970    The mechanism that picks names for types still needs some work, though.
971    (Right now it seems that if there is a type A.t which is defined to
972    be B.u, but B is unavailable at toplevel, then A.t gets printed as
973    "?.B.u" although the perhaps more sensible solution would be to use
974    "A.t" in this case.  In other words, the prettyprinter should follow
975    a chain of DEFtycs not farther than there are corresponding toplevel
976    names in the current environment.)
977    
978    ----------------------------------------------------------------------
979    Name: Matthias Blume (blume (at) tti - c (dot) org)
980    Date: 2003/09/24 16:31:00 CDT
981    Tag: blume-20030924-installer
982    Description:
983    
984    Another installer tweak:  All the ML code for the installer is now
985    compiled during CMB.make and put into a little library called
986    $smlnj/installer.cm.  The installation then simply invokes
987    
988       sml -m $smlnj/installer.cm
989    
990    and everything happens automagically.
991    
992    Win32:  ML code senses value of environment variable SMLNJ_HOME.
993    Unix:   ML code senses values of environment variables ROOT, CONFIGDIR,
994            and BINDIR.
995    
996    The new scheme guarantees that the ML code responsible for the installation
997    is in sync with the APIs of the main system.  Also, the installer is
998    somewhat faster because the installer script is precompiled.
999    
1000    ----------------------------------------------------------------------
1001    Name: Matthias Blume (blume (at) tti - c (dot) org)
1002    Date: 2003/09/24 15:35:00 CDT
1003    Tag: blume-20030924-synsock
1004    Description:
1005    
1006    Added a signature SYNCHRONOUS_SOCKET to basis.cm.  This is like SOCKET
1007    but excludes all non-blocking operations.  Defined SOCKET (in Basis)
1008    and CML_SOCKET in terms of SYNCHRONOUS_SOCKET.  Removed superfluous
1009    implementations of non-blocking operations from CML's Socket
1010    structure.
1011    
1012    ----------------------------------------------------------------------
1013    Name: Matthias Blume (blume (at) tti - c (dot) org)
1014    Date: 2003/09/24 15:10:05 CDT
1015    Tag: blume-20030924-sockets
1016    Description:
1017    
1018    1. Fixed SOCKET API and implementation to match Basis spec.
1019       This required changing the internal representation of sockets to one
1020       that remembers (for each socket file descriptor) whether it is currently
1021       blocking or non-blocking.  This state is maintained lazily (i.e., a system
1022       call is made only if the state actually needs to change).
1023    
1024    2. OS-specific details of sockets were moved into separate files, thus
1025       making it possible to unify the bulk of the socket implementations
1026       between Unix and Win32.
1027    
1028    3. CML's socket API changed accordingly.
1029       (Note that we need to remove non-blocking functions from this API
1030       since they are redundant in the case of CML!)
1031    
1032    4. CML's socket implementation now makes use of non-blocking functions
1033       provided by Basis, thus removing all OS-dependent code from this part
1034       of CML.
1035    
1036    5. Changed Real64.precision from 52 to 53.  Minor cleanup in Real64 code.
1037    
1038    ----------------------------------------------------------------------
1039    Name: Matthias Blume (blume (at) tti - c (dot) org)
1040    Date: 2003/09/22 12:10:00 CDT
1041    Tag: blume-20030922-110_43_2
1042    Description:
1043    
1044    Made a new interim version and bootfiles for developer's bootstrapping
1045    convenience.
1046    
1047       110.43.2 -- NEW BOOTFILES
1048    
1049    ----------------------------------------------------------------------
1050    Name: Matthias Blume (blume (at) tti - c (dot) org)
1051    Date: 2003/09/19 15:55:00 CDT
1052    Tag: blume-20030919-cmdir
1053    Description:
1054    
1055    1. new-install.sh -> install.sh
1056    2. changed default CM "metadata" directory name to ".cm" (instead of "CM")
1057    3. tweaked installer so that another name instead of .cm can be chosen
1058       at install time (by setting the CM_DIR_ARC environment variable
1059       during installation); once installation is complete, the name is
1060       fixed
1061    
1062    ----------------------------------------------------------------------
1063    Name: Matthias Blume (blume (at) tti - c (dot) org)
1064    Date: 2003/09/18 16:00:00 CDT
1065    Tag: blume-20030918-110_43_1
1066    Description:
1067    
1068    Made a new interim version and bootfiles for developer's bootstrapping
1069    convenience.
1070    
1071       110.43.1 -- NEW BOOTFILES
1072    
1073    ----------------------------------------------------------------------
1074    Name: Matthias Blume (blume (at) tti - c (dot) org)
1075    Date: 2003/09/18 15:20:00 CDT
1076    Tag: blume-20030918-misc
1077    Description:
1078    
1079    1. Exported fractionsPerSecond etc. from TimeImp (but not from Time as
1080       this seems to be controversial at the moment) and used those in
1081       Posix.ProcEnv.times.
1082    
1083    2. Added Time.{from,to}Nanoseconds to Time.
1084    
1085    3. Improved Real.{from,to}LargeInt by avoiding needless calculations.
1086       For example, fromLargeInt never needs to look at more than 3 "big
1087       digits" to get its 53 bits of precision.
1088    
1089    ----------------------------------------------------------------------
1090    Name: Matthias Blume (blume (at) tti - c (dot) org)
1091    Date: 2003/09/17 16:30:00 CDT
1092    Tag: blume-20030917-real32-slices
1093    Description:
1094    
1095    Added an entry to the primitive environment
1096    (compiler/Semant/statenv/prim.sml) for int32->real64 conversion and
1097    added code to compiler/CodeGen/main/mlriscGen.sml to implement it.
1098    
1099    Removed some of the "magic" constants in real64.sml and replaced them
1100    with code that generates these values from their corresponding
1101    integer counterparts.
1102    
1103    Made all(?) the slice-related changes to the Basis and made everything
1104    compile again...
1105    
1106    ----------------------------------------------------------------------
1107    Name: Matthias Blume (blume (at) tti - c (dot) org)
1108    Date: 2003/09/15 17:45:00 CDT
1109    Tag: blume-20030915-rbase
1110    Description:
1111    
1112    Fixed bug in Real.fromLargeInt.
1113    
1114    ----------------------------------------------------------------------
1115    Name: Matthias Blume (blume (at) tti - c (dot) org)
1116    Date: 2003/09/13 18:11:00 CDT
1117    Tag: blume-20030913-libinstall
1118    Description:
1119    
1120    Minor bugfix in config/libinstall (set anchor with path to
1121    standalone tool after installing it, otherwise libraries that
1122    need ml-lex or ml-yacc won't compile the first time the installer
1123    runs).
1124    
1125    ----------------------------------------------------------------------
1126    Name: Matthias Blume (blume (at) tti - c (dot) org)
1127    Date: 2003/09/12 11:45:00 CDT
1128    Tag: blume-20030912-various
1129    Description:
1130    
1131     - fixed bug in Real.toLargeInt
1132     - fixed bug in Posix.ProcEnv.times
1133     - changed inputLine functions to return an option
1134     - minor installer improvements / bugfixes
1135     - changed default @SMLalloc parameter for x86/celeron to 64k
1136    
1137    ----------------------------------------------------------------------
1138    Name: Matthias Blume (blume (at) tti - c (dot) org)
1139    Date: 2003/09/09 22:00:00 CDT
1140    Tag: Release_110_43
1141    Description:
1142    
1143        New working release 110.43.  New bootfiles.
1144    
1145    ----------------------------------------------------------------------
1146    Name: Matthias Blume (blume (at) tti - c (dot) org)
1147    Date: 2003/09/09 19:20:00 CDT
1148    Tag: blume-20030909-installer
1149    Description:
1150    
1151    Rewrote large parts of config/install.sh in SML (config/libinstall.sml).
1152    Modified config/install.bat to take advantage of it.  Also modified
1153    config/install.sh (and called it config/new-install.sh) to take advantage
1154    of it on Unix systems.  (The SML code is (supposed to be) platform-
1155    independent.)
1156    
1157    The installer can now install everything under Win32
1158    as well as under *nix as long as it compiles.
1159    
1160    Other changes:
1161    
1162      - made CML compile again under Win32
1163      - made eXene compile under Win32 (by providing a fake structure UnixSock
1164        and by using OS.Process.getEnv instead of Posix.ProcEnv.getenv)
1165      - fixed a bug in nowhere: it assumed that type OS.Process.status is the
1166        same as type int;  under Win32 it isn't
1167      - fixed some slice-related problems in the win32-specific parts of CML
1168      - added a functor argument "sameVol" to os-path-fn.sml in the Basis
1169        (under Win32, the volume name is case-insensitive, and the
1170        OS.Path code compares volume names for equality)
1171    
1172    ----------------------------------------------------------------------
1173    Name: Matthias Blume (blume (at) tti - c (dot) org)
1174    Date: 2003/09/08 11:55:00 CDT
1175    Tag: blume-20030908-fullpath
1176    Description:
1177    
1178    Made Win32 version of OS.FileSys.fullPath return current directory
1179    when given an empty string.  This is what the spec says, and incidentally,
1180    CM depends on it.  (CM otherwise goes into an infinite loop in certain
1181    cases when presented with the name of a non-existing .cm file.)
1182    
1183    ----------------------------------------------------------------------
1184    Name: Matthias Blume (blume (at) tti - c (dot) org)
1185    Date: 2003/09/04 16:30:00 CDT
1186    Tag: blume-20030905-slices-etc
1187    Description:
1188    
1189      1. Changed interface to vectors and arrays in Basis to match
1190         (draft) Basis spec.
1191      2. Added signatures and implementations of slices according to
1192         Basis spec.
1193      3. Edited source code throughout the system to make it compile again
1194         under 1. and 2.  (In some cases code had to be added to have it
1195         match the new signatures.)
1196      4. MLRISC should be backward-compatible: the copies of the originals
1197         of files that needed to change under 3. were retained, the .cm files
1198         check the compiler version number and use old versions when
1199         appropriate.
1200      5. Changed type of OS.FileSys.readDir and Posix.FileSys.readdir to
1201         dirstream -> string option (in accordance with Basis spec).
1202      6. When generating code that counts lines, ml-lex used function
1203         CharVector.foldli, taking advantage of its old interface.
1204         This has been replaced with the corresponding code from
1205         CharVectorSlice.  (html-lex must be re-lexed!)
1206      7. BitArray in smlnj-lib/Util has been extended/modified to match the
1207         new MONO_ARRAY signature.  (Do we need BitArraySlice?)
1208      8. Removed temporary additions (fromInternal, toInternal) from the
1209         (now obsolete) IntInf in smlnj-lib/Util.
1210      9. Cleaned up structure Byte.
1211     10. Added localOffset, scan, and fromString to Date (according to spec).
1212         Cleaned/corrected implementation of Date.
1213         (Still need to check for correctness; implement better canonicalizeDate.)
1214     11. Added "scan" to signature IEEE_REAL.
1215     12. Some improvements to IntInf [in particular: efficiency-hack for
1216         mod and rem when second operand is 2 (for parity checks).]
1217     13. Changed representation of type Time.time, using a single IntInf.int
1218         value counting microseconds.  This considerably simplified the
1219         implementation of structure Time.  We now support negative time
1220         values; scan and fromString handle signs.
1221     14. Functor PrimIO now takes two additional arguments (VectorSlice and
1222         ArraySlice).
1223    
1224    ----------------------------------------------------------------------
1225    Name: Matthias Blume (blume (at) tti - c (dot) org)
1226    Date: 2003/08/28 17:00:00 CDT
1227    Tag: blume-20030828-intinf
1228    Description:
1229    
1230    This is a major update which comes with a version number bump
1231    (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
1232    and an implementation of IntInf in the Basis.
1233    
1234    There are a fairly large number of related changes and updates throughout
1235    the system:
1236    
1237    Basis:
1238            - Implemented IntInf.
1239            - Made LargeInt a projection of IntInf (by filtering through INTEGER).
1240            - Added some missing Real64 operations, most notably Real.toLargeInt.
1241            - Added FixedInt as a synonym for Int32.
1242    
1243    compiler:
1244            * Added support for a built-in intinf type.
1245              - literals
1246              - pattern matching
1247              - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
1248              - overloading on literals and operations
1249    
1250            This required adding a primitive type intinf, some additional
1251            primops, and implementations for several non-trivial intinf
1252            operations in Core.  (The intinf type is completely abstract
1253            to the compiler; all operations get delegated back to the Core.)
1254    
1255            * Intinf equality is handled by polyequal.  However, the compiler
1256            does not print its usual warning in this case (since polyequal
1257            is the right thing to do there).
1258    
1259            * Improved the organization of structure InlineT.
1260    
1261            * A word about conversion primops:
1262            If conversions involving intinf do not cancel out during
1263            CPS contract, then the compiler must insert calls to Core functions.
1264            Since all core access must be resolved already during the FLINT
1265            translate phase, it would be too late a the time of CPS contract
1266            to add new Core calls.  For this reason, conversion primops
1267            for intinf carry two arguments:  1. the numeric argument that
1268            they are supposed to convert, and 2. the Core function that
1269            can help with this conversion if necessary.  If CPS contract
1270            eliminates a primop, then the associated Core function becomes
1271            dead and goes away.  Intinf conversion primops that do not get
1272            eliminated by CPS contract get rewritten into calls of their
1273            core functions by a separate, new phase.
1274    
1275    interactive system:
1276            - Control.Print.intinfDepth controls max length of intinf constants
1277            being printed. (Analogous to Control.Print.stringDepth.)
1278            - Cleanup in printutil and pputil: got rid of unused stuff and
1279            duplicates; replaced some of the code with code that makes better
1280            use of library functionality.
1281    
1282    CM:
1283            Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
1284            are no longer silent.
1285    
1286    CKIT:
1287            Fixed mismatched uses of Int32 and LargeInt.  I always decided
1288            in favor of LargeInt -- which is now the same as IntInf.
1289            CKIT-knowledgable people should check whether this is what's
1290            intended and otherwise change things back to using Int32 or
1291            FixedInt.
1292    
1293    Throughout the code:
1294            Started using IntInf.int literals and built-in operations
1295            (e.g., comparison with 0) where this seems appropriate.
1296    
1297    
1298    ----------------------------------------------------------------------
1299    Name: Dave MacQueen (dbm@cs.uchicago.edu)
1300    Date: 2003/08/13 11:36:00 CDT
1301    Tag: dbm-20030813-mcz-merge1
1302    Description:
1303    
1304    Merging changes from the mcz-branch development branch into trunk.
1305    These changes involve replacement of the emulated old prettyprinter
1306    interface with direct use of the SML/NJ Lib PP library, and fixing
1307    of a couple of bugs (895, 1186) relating to error messages.  A new
1308    prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
1309    has been added.
1310    
1311    ----------------------------------------------------------------------
1312    Name: Matthias Blume (blume (at) tti - c (dot) org)
1313    Date: 2003/08/11 15:45:00 CDT
1314    Tag: blume-20030811-windows
1315    Description:
1316    
1317    Version number bumped to 110.42.9.  NEW BOOTFILES!!!
1318    
1319        http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
1320    
1321    This patch restores SML/NJ's ability to run under win32.  There are a
1322    number of changes, including fixes for several bugs that had gone
1323    unnoticed until now:
1324    
1325      - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
1326        trying to run the win32 version from within cygwin.)
1327    
1328      - There are a number of simple .bat scripts that substitute for their
1329        corresponding Unix shell-scripts.  (See below.)
1330    
1331      - The internals of ml-build have been modified slightly.  The main
1332        difference is that instead of calling ".link-sml" (or link-sml.bat)
1333        using OS.Process.system, the ML process delegates this task back
1334        to the script.  Otherwise problems arise in mixed environments such
1335        as Cygwin where scripts look and work like Unix scripts, but
1336        where OS.Process.system cannot run them.
1337    
1338      - In CM, the srcpath pickler used native pathname syntax -- which
1339        is incorrect in the case of cross-compilation.  The new pickle format
1340        is independent of platform-specific naming conventions.
1341    
1342      - Path configuration files (such as lib/pathconfig) can now choose
1343        between native and standard syntax.  Placing a line of the form
1344    
1345            standard!
1346    
1347        into the file causes all subsequent paths to be interpreted using
1348        CM standard pathname syntax (= Unix conventions); a line
1349    
1350            native!
1351    
1352        switches back to native style.  This was needed so that
1353        path config files can be written portably, see src/system/pathconfig.
1354    
1355      - Runtime system:
1356    
1357          - win32-filesys.c:  get_file_time and set_file_time now
1358            access modification time, not creation time.
1359    
1360          - I/O code made aware of new array representation.
1361    
1362          - Bug fixes in X86.prim.masm.
1363    
1364       - src/system/makeml made aware of win32. (For use under cygwin
1365            and other Unix-environments for windows.)
1366    
1367       - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
1368         which caused BinIO.inputAll to fail consistently.
1369    
1370    .bat scripts:
1371    
1372       Windows .bat scripts assume that SMLNJ_HOME is defined.
1373    
1374       - sml.bat, ml-yacc.bat, ml-lex.bat:  Driver scripts for standalone
1375         applications (sml, ml-yacc, ml-lex).
1376       - ml-build.bat: analogous to ml-build.
1377       - config\install.bat:  Analogous to config/install.sh.  This requires
1378         that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
1379         (nmake etc. must be on the path, and vcvars32 must have been run.)
1380         Moreover, sources for ml-lex and ml-yacc need to exist under src,
1381         and the bootfile hierarchy must have been unpacked under
1382         sml.boot.x86-win32.
1383         The script is very primitive and does a poor job at error checking.
1384         It only installs the base system, ml-lex, and ml-yacc.  No other
1385         libraries are being installed (i.e., you get only those that
1386         are part of the compiler.)
1387       - link-sml.bat:  analogous to .link-sml, but not currently used
1388    
1389    Unrelated bug fixes:
1390    
1391      - ml-nlffigen now exports structures ST_* corresponding to incomplete
1392        types.
1393      - Added getDevice to PP/src/pp-debug-fn.sml.  (Would not compile
1394        otherwise.)
1395    
1396    ----------------------------------------------------------------------
1397    Name: Dave MacQueen (macqueen@cs.uchicago.edu)
1398    Date: 2003/06/17
1399    Tag: macqueen-20030617-bug895
1400    Description:
1401    
1402    Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
1403    Tag will be used for new development branch (mcz-branch) for
1404    use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
1405    
1406    ----------------------------------------------------------------------
1407    Name: Matthias Blume (blume (at) tti - c (dot) org)
1408    Date: 2003/05/27 16:55:00 CDT
1409    Tag: blume-20030527-polyeq
1410    Description:
1411    
1412    Tried to eliminated most cases of polymorphic equality.
1413    
1414    ----------------------------------------------------------------------
1415    Name: Matthias Blume (blume (at) tti - c (dot) org)
1416    Date: 2003/05/21 17:45:00 CDT
1417    Tag: blume-20030517-complete
1418    Description:
1419    
1420    Two changes:
1421    
1422      1. Added a flag for controlling whether non-exhaustive bindings will
1423         be treated as errors (default is false).
1424      2. Cleaned up the *entire* source tree so that CMB.make goes through
1425         without a single non-exhaustive match- or bind warning.
1426    
1427    ----------------------------------------------------------------------
1428    Name: Matthias Blume (blume (at) tti - c (dot) org)
1429    Date: 2003/05/17 10:20:00 CDT
1430    Tag: blume-20030517-absyn
1431    Description:
1432    
1433    1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
1434    
1435       This mainly affects the quality of error messages.  However, some
1436       of the code is now more straightforward than before. (Treatment of
1437       the above four constructs in translate.sml is much simpler than
1438       the "macro-expansion" that was going on before.  Plus, the mach-
1439       compiler no longer gets invoked just to be able to compile an
1440       if-expression.)
1441    
1442    2. The ErrorMsg.Error exception is now caught and absorbed by the
1443       interactive loop.
1444    
1445    ----------------------------------------------------------------------
1446    Name: Allen Leung
1447    Date: 2003/05/16 13:05:00 CDT
1448    Tag: leunga-20030516-cygwin-runtime
1449    Description:
1450    
1451        Ported the runtime system to cygwin, which uses the unix
1452    x86-unix bin files.  Missing/buggy features:
1453    
1454       o getnetbyname, getnetbyaddr: these functions seem to be missing in
1455         the Cygwin library.
1456       o Ctrl-C handling may be flaky.
1457       o Windows system calls and Windows I/O are not supported.
1458    
1459       A new set of binfiles is located at:
1460    
1461         http://www.dorsai.org/~leunga/boot.x86-unix.tgz
1462    
1463       This is only needed for bootstrapping the cygwin version of smlnj.
1464       Other x86 versions can use the existing binfiles.
1465    
1466    ----------------------------------------------------------------------
1467    Name: Matthias Blume
1468    Date: 2003/04/08 15:42:00 CDT
1469    Tag: blume-20030408-listpair
1470    Description:
1471    
1472    1. Added a target 'mlrisc' to installer.
1473    
1474    2. Added missing elements to structure ListPair.
1475    
1476    ----------------------------------------------------------------------
1477    Name: Allen Leung
1478    Date: 2003/01/07 10:40:00 EST
1479    Tag: leunga-20030107-int-rem
1480    Description:
1481    
1482    Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
1483    The arguments to the SUBL instruction were swapped.
1484    
1485    ----------------------------------------------------------------------
1486    Name: Matthias Blume
1487    Date: 2002/12/12 16:25:00 EST
1488    Tag: blume-20021212-risc-ra
1489    Description:
1490    
1491    Fixed a serious bug in the rewrite code for FP spilling/reloading that
1492    sent the RA into an infinite loop when floating point registers get
1493    spilled.  (Because of this bug, e.g., nucleic stopped compiling between
1494    110.37 and 110.38.)
1495    There was another set of potential problems related to the handling of
1496    MLRISC annotations (but those did not yet cause real problems, apparently).
1497    
1498    ----------------------------------------------------------------------
1499    Name: Matthias Blume
1500    Date: 2002/12/06 22:40:00 EST
1501    Tag: blume-20021206-cm-fileid
1502    Description:
1503    
1504    Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
1505    This fixes the problem of CM getting confused by files that suddenly
1506    change their identity (e.g., by getting unlinked and recreated by some
1507    text editor such as vi).  There might be a better/cheaper/cleaner way
1508    of doing this, but for now this will have to do.
1509    
1510    ----------------------------------------------------------------------
1511    Name: Matthias Blume
1512    Date: 2002/10/28 09:50:00 EST
1513    Tag: blume-20021028-typecheck
1514    Description:
1515    
1516    Exported structure Typecheck from $smlnj/viscomp/core.cm.
1517    
1518    ----------------------------------------------------------------------
1519    Name: Matthias Blume
1520    Date: 2002/10/17 09:10:00 EDT
1521    Tag: Release_110_42
1522    Description:
1523    
1524    In good old tradition, there has been a slight hiccup so that we have
1525    to patch 110.42 after the fact.   The old release tag has been replaced
1526    (see below).
1527    
1528    The change solves a problem with two competing approaches the
1529    configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
1530    each other's way.
1531    
1532    This change only affects the runtime system code and the installer script.
1533    (No new bootfiles.)
1534    
1535    ----------------------------------------------------------------------
1536    Name: Matthias Blume
1537    Date: 2002/10/16 12:00:00 EDT
1538    Tag: Release_110_42_removed
1539    Description:
1540    
1541    New working release.  New bootfiles.
1542    
1543    ----------------------------------------------------------------------
1544    Name: Matthias Blume
1545    Date: 2002/10/10 13:10:00 EDT
1546    Tag: blume-20021010-ppc-divs
1547    Description:
1548    
1549    The mltree operator DIVS must be implemented with an overflow check on
1550    the PPC because the hardware indicates divide-by-zero using "overflow" as
1551    well.
1552    
1553    ----------------------------------------------------------------------
1554    Name: Matthias Blume
1555    Date: 2002/07/23 11:45:00
1556    Tag: blume-20020723-smlnj-home
1557    Description:
1558    
1559    Sml now senses the SMLNJ_HOME environment variable.  If this is set,
1560    then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
1561    CM_PATHCONFIG is also set), the path configuration file is assumed
1562    to be in $SMLNJ_HOME/lib/pathconfig.  This way one can easily move
1563    the entire tree to some other place and everything will "just work".
1564    
1565    (Companion commands such as ml-build and ml-makedepend also sense this
1566    variable.)
1567    
1568    ----------------------------------------------------------------------
1569    Name: Matthias Blume
1570    Date: 2002/07/12 21:19:00 EDT
1571    Tag: blume-20020712-liveness
1572    Description:
1573    
1574    Exported two useful "step" functions from liveness module (MLRISC).
1575    
1576    ----------------------------------------------------------------------
1577    Name: Matthias Blume
1578    Date: 2002/07/05 16:00 EDT
1579    Tag: Release_110_41
1580    Description:
1581    
1582    New working release.  New bootfiles.
1583    
1584    ----------------------------------------------------------------------
1585    Name: Matthias Blume
1586    Date: 2002/07/05 10:25:00 EDT
1587    Tag: blume-20020705-btimp
1588    Description:
1589    
1590    Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
1591    other clients can set up backtracing support.
1592    
1593    ----------------------------------------------------------------------
1594    Name: Matthias Blume
1595    Date: 2002/06/25 17:23:00 EDT
1596    Tag: blume-20020625-fpmax
1597    Description:
1598    
1599    Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
1600    case.  (The sense of the isNaN test was reversed -- which made min and
1601    max always return their first argument.)
1602    
1603    ----------------------------------------------------------------------
1604    Name: Matthias Blume
1605    Date: 2002/06/11
1606    Tag: blume-20020611-unixpath
1607    Description:
1608    
1609    Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
1610    
1611    ----------------------------------------------------------------------
1612    Name: Matthias Blume
1613    Date: 2002/06/10 16:35:00 EDT
1614    Tag: blume-20020610-ieeereal
1615    Description:
1616    
1617    I back-ported my implementation of IEEEReal.fromString from the
1618    idlbasis-devel branch so that we can test it.
1619    
1620    Another small change is that ppDec tries to give more information
1621    than just "<sig>" in the case of functors.  However, this code is
1622    broken in some mysterious way if the functor's body's signature
1623    has not been declared by ascription but gets inferred from the
1624    implementation.  This needs fixing...
1625    
1626    ----------------------------------------------------------------------
1627    Name: Matthias Blume
1628    Date: 2002/05/31
1629    Tag: blume-20020531-btrace-mode
1630    Description:
1631    
1632    Resurrected SMLofNJ.Internals.BTrace.mode.  (It accidentally fell by
1633    the wayside when I switched over to using Controls everywhere.)
1634    
1635    ----------------------------------------------------------------------
1636    Name: Lal George
1637    Date: 2002/05/23 12:21:40 EDT
1638    Tag: george-20020523-visual-labels
1639    Description:
1640    
1641    Labels are now displayed in the graphical output to make
1642    the fall-through and target blocks obvious.
1643    
1644    ----------------------------------------------------------------------
1645    Name: Matthias Blume
1646    Date: 2002/05/22 11:03:00 EDT
1647    Tag: blume-20020522-shrink
1648    Description:
1649    
1650    John tweaked yesterday's fix for 1131 to handle an out-of-memory
1651    situation that comes up when allocating huge arrays.
1652    
1653    ----------------------------------------------------------------------
1654    Name: Matthias Blume
1655    Date: 2002/05/21 16:00:00 EDT
1656    Tag: Release_110_40
1657    Description:
1658    
1659    New working release (110.40).  New bootfiles.
1660    
1661    [Also: John Reppy fixed GC bug 1131.]
1662    
1663    ----------------------------------------------------------------------
1664    Name: Matthias Blume
1665    Date: 2002/05/21 12:35:00 EDT
1666    Tag: blume-20020521-cmdoc
1667    Description:
1668    
1669    CM documentation update.
1670    
1671    ----------------------------------------------------------------------
1672    Name: Matthias Blume
1673    Date: 2002/05/21 10:55:00 EDT
1674    Tag: blume-20020521-misc
1675    Description:
1676    
1677    - John tweaked runtime to be silent on heap export (except when
1678      GC messages are on).
1679    - I added a few more things (cross-compiling versions of CMB) to
1680      config/preloads (as suggestions).
1681    
1682    ----------------------------------------------------------------------
1683    Name: Matthias Blume
1684    Date: 2002/05/20 22:25:00 EDT
1685    Tag: blume-20020520-controls
1686    Description:
1687    
1688    - Added ControlUtil structure to control-lib.cm.
1689    - Use it throughout.
1690    - Used Controls facility to define MLRISC controls (as opposed to
1691      registering MLRISC control ref cells with Controls after the fact)
1692    - Fixed messed-up controls priorities.
1693    
1694    * Removed again all the stuff from config/preloads that one wouldn't
1695      be able to preload at the time the initial heap image is built.
1696      (Many libraries, e.g., CML, do not exist yet at this time.  The
1697       only libraries that can be preloaded via config/preloads are those
1698       that come bundled with the bootfiles.)
1699    
1700    ----------------------------------------------------------------------
1701    Name: Matthias Blume
1702    Date: 2002/05/20 10:59:00 EDT
1703    Tag: blume-20020520-preloads
1704    Description:
1705    
1706    Added a lot of commented-out suggestions for things to be included
1707    in config/preloads.
1708    
1709    ----------------------------------------------------------------------
1710    Name: Allen Leung
1711    Date: 2002/05/18 14:20:00 EDT
1712    Tag: leunga-20020518-mdl
1713    Description:
1714    
1715    o Made the mdl tool stuff compile and run again.
1716    o I've disabled all the stuff that depends on RTL specifications; they
1717      are all badly broken anyway.
1718    
1719    ----------------------------------------------------------------------
1720    Name: Matthias Blume
1721    Date: 2002/05/17 16:49:00 EDT
1722    Tag: blume-20020517-controls
1723    Description:
1724    
1725    0. John Reppy made several modifications to the SML/NJ library.
1726       In particular, there is a shiny new controls-lib.cm.
1727    
1728    1. Pushed new controls interface through compiler so that everything
1729       compiles again.
1730    
1731    2. Added FormatComb and FORMAT_COMB to the CML version of the
1732       SML/NJ library (so that CML compiles again).
1733    
1734    3. Modified init scripts because XXX_DEFAULT environment variables
1735       are no longer with us.  (Boot-time initialization is now done
1736       using the same environment variables that are also used for
1737       startup-time initialization of controls.)
1738    
1739    ----------------------------------------------------------------------
1740    Name: Lal George
1741    Date: 2002/05/15 09:20:10 EDT
1742    Tag: george-20020515-pseudo-op-decls
1743    Description:
1744    
1745            All pseudo-ops emitted before the first segment declaration
1746    such as TEXT, DATA, and BSS directives are assumed to be global
1747    declarations and are emitted first in the assembly file. This is
1748    useful in a number of situations where one has pseudo-ops that are not
1749    specific to any segment, and also works around the constraint that one
1750    cannot have client pseudo-ops in the TEXT segment.
1751    
1752            Because no segment is associated with these declarations it is
1753    an error to allocate any space or objects before the first segment
1754    directive and an exception will be raised. However, we cannot make
1755    this check for client pseudo-ops.
1756    
1757            These top level declarations are a field in the CFG graph_info.
1758    In theory you can continue to add to this field after the CFG has been
1759    built -- provided you know what you are doing;-)
1760    
1761    ----------------------------------------------------------------------
1762    Name: Matthias Blume
1763    Date: 2002/05/13 16:40:00 EDT
1764    Tag: blume-20020513-pp-etc
1765    Description:
1766    
1767    A few minor bugfixes:
1768    
1769      - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
1770        (Bogus printouts for redefined bindings still occur.  Compiler
1771        bug should no longer occur now.  We need to redo the prettyprinter
1772        from scratch.)
1773    
1774      - CM pathname printer now also adds escape sequences for ( and )
1775    
1776      - commend and docu fixes for ml-nlffi
1777    
1778    ----------------------------------------------------------------------
1779    Name: Matthias Blume
1780    Date: 2002/05/10 16:40:00 EDT
1781    Tag: blume-20020510-erg-textio
1782    Description:
1783    
1784    Applied the following bugfix provided by Emden Gansner:
1785    
1786        Output is corrupted when outputSubstr is used rather than output.
1787    
1788        The problem occurs when a substring
1789    
1790            ss = (s, dataStart, dataLen)
1791    
1792        where dataStart > 0, fills a stream buffer with avail bytes left.
1793        avail bytes of s, starting at index dataStart, are copied into the
1794        buffer, the buffer is flushed, and then the remaining dataLen-avail
1795        bytes of ss are copied into the beginning of the buffer. Instead of
1796        starting this copy at index dataStart+avail in s, the current code
1797        starts the copy at index avail.
1798    
1799        Fix:
1800        In text-io-fn.sml, change line 695 from
1801             val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
1802        to
1803             val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
1804    
1805    ----------------------------------------------------------------------
1806    Name: Matthias Blume
1807    Date: 2002/04/12 13:55:00 EDT
1808    Tag: blume-20020412-assyntax
1809    Description:
1810    
1811    1. Grabbed newer assyntax.h from the XFree86 project.
1812    2. Fiddled with how to compile X86.prim.asm without warnings.
1813    3. (Very) Minor cleanup in CM.
1814    
1815    ----------------------------------------------------------------------
1816    Name: Matthias Blume
1817    Date: 2002/04/01 (no joke!) 17:07:00 EST
1818    Tag: blume-20020401-x86div
1819    Description:
1820    
1821    Added full support for div/mod/rem/quot on the x86, using the machine
1822    instruction's two results (without clumsily recomputing the remainder)
1823    directly where appropriate.
1824    
1825    Some more extensive power-of-two support was added to the x86 instruction
1826    selector (avoiding expensive divs, mods, and muls where they can be
1827    replaced with cheaper shifts and masks).  However, this sort of thing
1828    ought to be done earlier, e.g., within the CPS optimizer so that
1829    all architectures benefit from it.
1830    
1831    The compiler compiles to a fixed point, but changes might be somewhat
1832    fragile nevertheless.  Please, report any strange things that you might
1833    see wrt. div/mod/quot/rem...
1834    
1835    ----------------------------------------------------------------------
1836    Name: Matthias Blume
1837    Date: 2002/03/29 17:22:00
1838    Tag: blume-20020329-div
1839    Description:
1840    
1841    Fixed my broken div/mod logic.  Unfortunately, this means that the
1842    inline code for div/mod now has one more comparison than before.
1843    Fast paths (quotient > 0 or remainder = 0) are not affected, though.
1844    The problem was with quotient = 0, because that alone does not tell
1845    us which way the rounding went.  One then has to look at whether
1846    remainder and divisor have the same sign...  :(
1847    
1848    Anyway, I replaced the bootfiles with fresh ones...
1849    
1850    ----------------------------------------------------------------------
1851    Name: Matthias Blume
1852    Date: 2002/03/29 14:10:00 EST
1853    Tag: blume-20020329-inlprims
1854    Description:
1855    
1856    NEW BOOTFILES!!!    Version number bumped to 110.39.3.
1857    
1858    Primops have changed. This means that the bin/boot-file formats have
1859    changed as well.
1860    
1861    To make sure that there is no confusion, I made a new version.
1862    
1863    
1864    CHANGES:
1865    
1866    * removed REMT from mltree (remainder should never overflow).
1867    
1868    * added primops to deal with divisions of all flavors to the frontend
1869    
1870    * handled these primops all the way through so they map to their respective
1871      MLRISC support
1872    
1873    * used these primops in the implementation of Int, Int32, Word, Word32
1874    
1875    * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
1876    
1877    * parameterized INLMIN, INLMAX, and INLABS by a numkind
1878    
1879    * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
1880      floating point
1881    
1882    * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
1883      and Real (but Real.abs maps to a separate floating-point-only primop)
1884    
1885    
1886    TODO items:
1887    
1888    * Hacked Alpha32 instruction selection, disabling the selection of REMx
1889      instructions because the machine instruction encoder cannot handle
1890      them.  (Hppa, PPC, and Sparc instruction selection did not handle
1891      REM in the first place, and REM is supported by the x86 machine coder.)
1892    
1893    * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
1894      selection phase.  (The two can be streamlined because the hardware
1895      delivers both quotient and remainder at the same time anyway.)
1896    
1897    * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
1898      (Currently the behavior is inconsistent both across architectures and
1899      wrt. the draft Basis spec.)
1900    
1901    * Word8 should eventually be handled natively, too.
1902    
1903    * There seems to be one serious bug in mltree-gen.sml.  It appears, though,
1904      as if there currently is no execution path that could trigger it in
1905      SML/NJ.  (The assumptions underlying functions arith and promotable do not
1906      hold for things like multiplication and division.)
1907    
1908    ----------------------------------------------------------------------
1909    Name: Matthias Blume
1910    Date: 2002/03/27 16:27:00 EST
1911    Tag: blume-20020327-mlrisc-divisions
1912    Description:
1913    
1914    Added support for all four division operations (ML's div, mod, quot,
1915    and rem) to MLRISC.  In the course of doing so, I also rationalized
1916    the naming (no more annoying switch-around of DIV and QUOT), by
1917    parameterizing the operation by div_rounding_mode (which can be either
1918    DIV_TO_ZERO or DIV_TO_NEGINF).
1919    
1920    The generic MLTreeGen functor takes care of compiling all four
1921    operations down to only round-to-zero div.
1922    
1923    Missing pieces:
1924    
1925      * Doing something smarter than relying on MLTreeGen on architectures
1926        like, e.g., the x86 where hardware division delivers both quotient and
1927        remainder at the same time.  With this, the implementation of the
1928        round-to-neginf operations could be further streamlined.
1929    
1930      * Remove inlining support for div/mod/rem from the frontend and replace it
1931        with primops that get carried through to the backend.  Do this for all
1932        int and word types.
1933    
1934    ----------------------------------------------------------------------
1935    Name: Matthias Blume
1936    Date: 2002/03/25 17:25:00 EST
1937    Tag: blume-20020325-divmod
1938    Description:
1939    
1940    I improved (hopefully without breaking them) the implementation of Int.div,
1941    Int.mod, and Int.rem.   For this, the code in translate.sml now takes
1942    advantage of the following observations:
1943    
1944      Let  q = x quot y      r = x rem y
1945           d = x div  y      m = x mod y
1946    
1947    where "quot" is the round-to-zero version of integer division that
1948    hardware usually provides.  Then we have:
1949    
1950         r = x - q * y        where neither the * nor the - will overflow
1951         d = if q >= 0 orelse x = q * y then q else q - 1
1952                              where neither the * nor the - will overflow
1953         m = if q >= 0 orelse r = 0 then r else r + y
1954                              where the + will not overflow
1955    
1956    This results in substantial simplification of the generated code.
1957    The following table shows the number of CFG nodes and edges generated
1958    for
1959            fun f (x, y) = x OPER y
1960            (* with OPER \in div, mod, quot, rem *)
1961    
1962    
1963        OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
1964        --------------------------------------------------------
1965         div |         24 |         39 |         12 |         16
1966         mod |         41 |         71 |         12 |         16
1967        quot |          8 |         10 |          8 |         10
1968         rem |         10 |         14 |          8 |         10
1969    
1970    
1971    ----------------------------------------------------------------------
1972    Name: Matthias Blume
1973    Date: 2002/03/25 22:06:00 EST
1974    Tag: blume-20020325-cprotobug
1975    Description:
1976    
1977    Fixed a bug in cproto (c prototype decoder).
1978    
1979    ----------------------------------------------------------------------
1980    Name: Matthias Blume
1981    Date: 2002/03/25 16:00:00 EST
1982    Tag: blume-20020325-raw-primops
1983    Description:
1984    
1985    I did some cleanup to Allen's new primop code and
1986    replaced yesterday's bootfiles with new ones.
1987    (But they are stored in the same place.)
1988    
1989    ----------------------------------------------------------------------
1990    Name: Matthias Blume
1991    Date: 2002/03/24 22:40:00 EST
1992    Tag: blume-20020324-bootfiles
1993    Description:
1994    
1995    Made the bootfiles that Allen asked for.
1996    
1997    ----------------------------------------------------------------------
1998    Name: Allen Leung
1999    Date: 2002/03/23 15:50:00 EST
2000    Tag: leunga-20020323-flint-cps-rcc-primops
2001    Description:
2002    
2003      1. Changes to FLINT primops:
2004    
2005        (* make a call to a C-function;
2006         * The primop carries C function prototype information and specifies
2007         * which of its (ML-) arguments are floating point. C prototype
2008         * information is for use by the backend, ML information is for
2009         * use by the CPS converter. *)
2010      | RAW_CCALL of { c_proto: CTypes.c_proto,
2011                       ml_args: ccall_type list,
2012                       ml_res_opt: ccall_type option,
2013                       reentrant : bool
2014                     } option
2015       (* Allocate uninitialized storage on the heap.
2016        * The record is meant to hold short-lived C objects, i.e., they
2017        * are not ML pointers.  With the tag, the representation is
2018        * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
2019        *)
2020      | RAW_RECORD of {tag:bool,sz:int}
2021      and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
2022    
2023      2.  These CPS primops are now overloaded:
2024    
2025           rawload of {kind:numkind}
2026           rawstore of {kind:numkind}
2027    
2028          The one argument form is:
2029    
2030             rawload {kind} address
2031    
2032          The two argument form is:
2033    
2034             rawload {kind} [ml object, byte-offset]
2035    
2036      3. RAW_CCALL/RCC now takes two extra arguments:
2037    
2038         a. The first is whether the C call is reentrant, i.e., whether
2039            ML state should be saved and restored.
2040         b. The second argument is a string argument specifying the name of
2041            library and the C function.
2042    
2043         These things are currently not handled in the code generator, yet.
2044    
2045      4. In CProto,
2046    
2047         An encoding type of "bool" means "ml object" and is mapped into
2048         C prototype of PTR.  Note that "bool" is different than "string",
2049         even though "string" is also mapped into PTR, because "bool"
2050         is assigned an CPS type of BOGt, while "string" is assigned INT32t.
2051    
2052      5. Pickler/unpicker
2053    
2054         Changed to handle RAW_RECORD and newest RAW_CCALL
2055    
2056      6. MLRiscGen,
2057    
2058         1. Changed to handle the new rawload/rawstore/rawrecord operators.
2059         2. Code for handling C Calls has been moved to a new module CPSCCalls,
2060            in the file CodeGen/cpscompile/cps-c-calls.sml
2061    
2062      7. Added the conditional move operator
2063    
2064             condmove of branch
2065    
2066         to cps.  Generation of this is still buggy so it is currently
2067         disabled.
2068    
2069    ----------------------------------------------------------------------
2070    Name: Lal George
2071    Date: 2002/03/22 14:18:25 EST
2072    Tag: george-20020322-cps-branch-prob
2073    Description:
2074    
2075    Implemented the Ball-Larus branch prediction-heuristics, and
2076    incorporated graphical viewers for control flow graphs.
2077    
2078    Ball-Larus Heuristics:
2079    ---------------------
2080    See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
2081    
2082    By design it uses the Dempster-Shafer theory for combining
2083    probabilities.  For example, in the function:
2084    
2085        fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
2086    
2087    the ball-larus heuristics predicts that the n=0 is unlikely
2088    (OH-heuristic), and the 'then' branch is unlikely because of the
2089    RH-heuristic -- giving the 'then' branch an even lower combined
2090    probability using the Dempster-Shafer theory.
2091    
2092    Finally, John Reppy's loop analysis in MLRISC, further lowers the
2093    probability of the 'then' branch because of the loop in the else
2094    branch.
2095    
2096    
2097    Graphical Viewing:
2098    ------------------
2099    I merely plugged in Allen's graphical viewers into the compiler. The
2100    additional code is not much. At the top level, saying:
2101    
2102            Control.MLRISC.getFlag "cfg-graphical-view" := true;
2103    
2104    will display the graphical view of the control flow graph just before
2105    back-patching.  daVinci must be in your path for this to work. If
2106    daVinci is not available, then the default viewer can be changed
2107    using:
2108    
2109            Control.MLRISC.getString "viewer"
2110    
2111    which can be set to "dot" or "vcg" for the corresponding viewers. Of
2112    course, these viewers must be in your path.
2113    
2114    The above will display the compilation unit at the level of clusters,
2115    many of which are small, boring, and un-interesting. Also setting:
2116    
2117            Control.MLRISC.getInt "cfg-graphical-view_size"
2118    
2119    will display clusters that are larger than the value set by the above.
2120    
2121    
2122    ----------------------------------------------------------------------
2123    Name: Matthias Blume
2124    Date: 2002/03/21 22:20:00 EST
2125    Tag: blume-20020321-kmp-bugfix
2126    Description:
2127    
2128    Changed the interface to the KMP routine in PreString and fixed
2129    a minor bug in one place where it was used.
2130    
2131    ----------------------------------------------------------------------
2132    Name: Allen Leung
2133    Date: 2002/03/21 20:30:00 EST
2134    Tag: leunga-20020321-cfg
2135    Description:
2136    
2137      Fixed a potential problem in cfg edge splitting.
2138    
2139    ----------------------------------------------------------------------
2140    Name: Allen Leung
2141    Date: 2002/03/21 17:15:00 EST
2142    Tag: leunga-20020321-x86-fp-cfg
2143    Description:
2144    
2145      1. Recoded the buggy parts of x86-fp.
2146    
2147         a. All the block reordering code has been removed.
2148            We now depend on the block placement phases to do this work.
2149    
2150         b. Critical edge splitting code has been simplified and moved into the
2151            CFG modules, as where they belong.
2152    
2153         Both of these were quite buggy and complex.  The code is now much, much
2154         simpler.
2155    
2156      2. X86 backend.
2157    
2158         a. Added instructions for 64-bit support.  Instruction selection for
2159            64-bit has not been committed, however, since that
2160            requires changes to MLTREE which haven't been approved by
2161            Lal and John.
2162    
2163         b. Added support for FUCOMI and FUCOMIP when generating code for
2164            PentiumPro and above.  We only generate these instructions in
2165            the fast-fp mode.
2166    
2167         c. Added cases for JP and JNP in X86FreqProps.
2168    
2169      3. CFG
2170    
2171         CFG now has a bunch of methods for edge splitting and merging.
2172    
2173      4. Machine description.
2174    
2175         John's simplification of MLTREE_BASIS.fcond broke a few machine
2176         description things:
2177    
2178         rtl-build.{sig,sml} and hppa.mdl fixed.
2179    
2180         NOTE: the machine description stuff in the repository is still broken.
2181               Again, I can't put my fixes in because that involves
2182               changes to MLTREE.
2183    
2184    ----------------------------------------------------------------------
2185    Name: Matthias Blume
2186    Date: 2002/03/20 15:55:00 EST
2187    Tag: blume-20020320-kmp
2188    Description:
2189    
2190    Implemented Knuth-Morris-Pratt string matching in PreString and used
2191    it for String.isSubstring, Substring.isSubstring, and
2192    Substring.position.
2193    
2194    (Might need some stress-testing.  Simple examples worked fine.)
2195    
2196    ----------------------------------------------------------------------
2197    Name: Matthias Blume
2198    Date: 2002/03/19 16:37:00 EST
2199    Tag: blume-20020319-witnesses
2200    Description:
2201    
2202    Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
2203    
2204    This implements a generic mechanism for changing constness qualifiers
2205    anywhere within big C types without resorting to outright "casts".
2206    (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
2207    modify the constness at the outermost level.)
2208    The implementation of "convert" is based on the idea of "witness"
2209    values -- values that are not used by the operation but whose types
2210    "testify" to their applicability.  On the implementation side, "convert"
2211    is simply a projection (returning its second curried argument).  With
2212    cross-module inlining, it should not result in any machine code being
2213    generated.
2214    
2215    ----------------------------------------------------------------------
2216    Name: Matthias Blume
2217    Date: 2002/03/15 16:40:00 EST
2218    Tag: blume-20020315-basis
2219    Description:
2220    
2221    Provided (preliminary?) implementations for
2222    
2223      {String,Substring}.{concatWith,isSuffix,isSubstring}
2224    
2225    and
2226    
2227      Substring.full
2228    
2229    Those are in the Basis spec but they were missing in SML/NJ.
2230    
2231    ----------------------------------------------------------------------
2232    Name: Matthias Blume
2233    Date: 2002/03/14 21:30:00 EST
2234    Tag: blume-20020314-controls
2235    Description:
2236    
2237    Controls:
2238    ---------
2239    
2240    1. Factored out the recently-added Controls : CONTROLS stuff and put
2241       it into its own library $/controls-lib.cm.  The source tree for
2242       this is under src/smlnj-lib/Controls.
2243    
2244    2. Changed the names of types and functions in this interface, so they
2245       make a bit more "sense":
2246    
2247          module -> registry
2248          'a registry -> 'a group
2249    
2250    3. The interface now deals in ref cells only.  The getter/setter interface
2251       is (mostly) gone.
2252    
2253    4. Added a function that lets one register an already-existing ref cell.
2254    
2255    5. Made the corresponding modifications to the rest of the code so that
2256       everything compiles again.
2257    
2258    6. Changed the implementation of Controls.MLRISC back to something closer
2259       to the original.  In particular, this module (and therefore MLRISC)
2260       does not depend on Controls.  There now is some link-time code in
2261       int-sys.sml that registers the MLRISC controls with the Controls
2262       module.
2263    
2264    CM:
2265    ---
2266    
2267      * One can now specify the lambda-split aggressiveness in init.cmi.
2268    
2269    ----------------------------------------------------------------------
2270    Name: Allen Leung
2271    Date: 2002/03/13 17:30:00 EST
2272    Tag: leunga-20020313-x86-fp-unary
2273    Description:
2274    
2275    Bug fix for:
2276    
2277    > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
2278    > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
2279    > - fun f(x,(y,z)) = Real.~ y;
2280    > [autoloading]
2281    > [autoloading done]
2282    >       fchsl   (%eax), 184(%esp)
2283    > Error: MLRisc bug: X86MCEmitter.emitInstr
2284    >
2285    > uncaught exception Error
2286    >   raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
2287    
2288    The problem was that the code generator did not generate any fp registers
2289    in this case, and the ra didn't know that it needed to run the X86FP phase to
2290    translate the pseudo fp instruction.   This only happened with unary fp
2291    operators in certain situations.
2292    
2293    ----------------------------------------------------------------------
2294    Name: Matthias Blume
2295    Date: 2002/03/13 14:00:00 EST
2296    Tag: blume-20020313-overload-etc
2297    Description:
2298    
2299    1. Added _overload as a synonym for overload for backward compatibility.
2300       (Control.overloadKW must be true for either version to be accepted.)
2301    
2302    2. Fixed bug in install script that caused more things to be installed
2303       than what was requested in config/targets.
2304    
2305    3. Made CM aware of the (_)overload construct so that autoloading
2306       works.
2307    
2308    ----------------------------------------------------------------------
2309    Name: Matthias Blume
2310    Date: 2002/03/12 22:03:00 EST
2311    Tag: blume-20020312-url
2312    Description:
2313    
2314    Forgot to update BOOT and srcarchiveurl.
2315    
2316  ----------------------------------------------------------------------  ----------------------------------------------------------------------
2317  Name: Matthias Blume  Name: Matthias Blume
2318  Date: 2002/03/12 17:30:00 EST  Date: 2002/03/12 17:30:00 EST
# Line 27  Line 2329 
2329    provides a bit more "stability":  Once CM has seen a compilation    provides a bit more "stability":  Once CM has seen a compilation
2330    unit, it keeps its identity constant (as long as you do not delete    unit, it keeps its identity constant (as long as you do not delete
2331    those crucial CM/GUID/* files).  This means that when you change    those crucial CM/GUID/* files).  This means that when you change
2332    and interface, compiler, then go back to the old interface, and    an interface, compile, then go back to the old interface, and
2333    compile again, you arrive at the original pid.    compile again, you arrive at the original pid.
2334    
2335    There now also is a mechanism that instructs CM to use the plain    There now also is a mechanism that instructs CM to use the plain
# Line 102  Line 2404 
2404  ----------------------------------------------------------------------  ----------------------------------------------------------------------
2405  Name: Allen Leung  Name: Allen Leung
2406  Date: 2002/03/11 10:30:00 EST  Date: 2002/03/11 10:30:00 EST
2407  Tag: leunga-20020310-runtime-string0  Tag: leunga-20020311-runtime-string0
2408  Description:  Description:
2409    
2410     The representation of the empty string now points to a     The representation of the empty string now points to a

Legend:
Removed from v.1137  
changed lines
  Added in v.1650

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