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Diff of /sml/trunk/HISTORY

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revision 691, Tue Jul 25 07:20:24 2000 UTC revision 847, Mon Jun 25 16:11:22 2001 UTC
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11  Date:  Date:
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14    
15    ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2001/06/25 12:05:00 EDT
18    Tag: blume-20010625-nlffigen
19    Description:
20    
21    This update fixes a number of minor bugs in ml-nlffigen as reported by
22    Nick Carter <nbc@andrew.cmu.edu>.
23    
24      1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
25      2. Default names for generated files are now derived from the name of
26         the C file *without its directory*.  In particular, this causes generated
27         files to be placed locally even if the C file is in some system directory.
28      3. Default names for generated signatures and structures are also derived
29         from the C file name without its directory.  This avoids silly things
30         like "structure GL/GL".
31         (Other silly names are still possible because ml-nlffigen does not do
32          a thorough check of whether generated names are legal ML identifiers.
33          When in doubt, use command line arguments to force particular names.)
34    
35    ----------------------------------------------------------------------
36    Name: Matthias Blume
37    Date: 2001/06/21 12:25:00 EDT
38    Tag: blume-20010621-eXene
39    Description:
40    
41    eXene now compiles and (sort of) works again.
42    
43    The library name (for version > 110.33) is $/eXene.cm.
44    
45    I also added an new example in src/eXene/examples/nbody.  See the
46    README file there for details.
47    
48    ----------------------------------------------------------------------
49    Name: Matthias Blume
50    Date: 2001/06/20 16:40:00 EDT
51    Tag: blume-20010620-cml
52    Description:
53    
54    CML now compiles and works again.
55    
56    Libraries (for version > 110.33):
57    
58      $cml/cml.cm            Main CML library.
59      $cml/basis.cm          CML's version of $/basis.cm.
60      $cml/cml-internal.cm   Internal helper library.
61      $cml/core-cml.cm       Internal helper library.
62      $cml-lib/trace-cml.cm  Tracing facility.
63      $cml-lib/smlnj-lib.cm  CML's version of $/smlnj-lib.cm
64    
65    The installer (config/install.sh) has been taught how to properly
66    install this stuff.
67    
68    ----------------------------------------------------------------------
69    Name: Matthias Blume
70    Date: 2001/06/19 17:55:00 EDT
71    Tag: blume-20010619-instantiate
72    Description:
73    
74    This un-breaks the fix for bug 1432.
75    (The bug was originally fixed in 110.9 but I broke it again some
76    time after that.)
77    
78    ----------------------------------------------------------------------
79    Name: Matthias Blume
80    Date: 2001/06/19 17:25:00 EDT
81    Tag: blume-20010619-signals
82    Description:
83    
84    This should (hopefully) fix the long-standing signal handling bug.
85    (The runtime system was constructing a continuation record with an
86    incorrect descriptor which would cause the GC to drop data on the floor...)
87    
88    ----------------------------------------------------------------------
89    Name: Matthias Blume
90    Date: 2001/06/15 15:05:00 EDT
91    Tag: blume-20010615-moresparc
92    Description:
93    
94    Here is a short late-hour update related to Sparc c-calls:
95    
96     -- made handling of double-word arguments a bit smarter
97    
98     -- instruction selection phase tries to collapse certain clumsily
99        constructed ML-Trees; typical example:
100    
101            ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
102    
103        This currently has no further impact on SML/NJ since mlriscGen does
104        not seem to generate such patterns in the first place, and c-calls
105        (which did generate them in the beginning) has meanwhile been fixed
106        so as to avoid them as well.
107    
108    ----------------------------------------------------------------------
109    Name: Matthias Blume
110    Date: 2001/06/15 15:05:00 EDT
111    Tag: blume-20010615-sparc
112    Description:
113    
114    The purpose of this update is to provide an implementation of NLFFI
115    on Sparc machines.
116    
117    Here are the changes in detail:
118    
119       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
120       the Sparc implementation of the c-calls API.
121       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
122       for accessing the ML frame.  Thus, we have a real frame pointer and
123       can freely modify %sp without need for an omit-frame-ptr phase.
124       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
125       this case.
126       * ml-nlffigen has been taught to produce code for different architectures
127       and calling conventions.
128       * In a way similar to what was done in the x86 case, the Sparc
129       backend uses its own specific extension to mltree.  (For example,
130       it needs to be able to generate UNIMP instructions which are part
131       of the calling convention.)
132       * ml-nlffi-lib was reorganized to make it more modular (in particular,
133       to make it easier to plug in new machine- and os-dependent parts).
134    
135    There are some other fairly unrelated bug fixes and cleanups as well:
136    
137       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
138       that they properly share their libraries with existing SML/NJ libraries.
139       * I fixed a minor cosmetic bug in CM, supressing certain spurious
140       follow-up error messages.
141       * Updates to CM/CMB documentation.
142    
143    TODO items:
144    
145       * MLRISC should use a different register as its asmTemp on the Sparc.
146         (The current %o2 is a really bad choice because it is part of the
147         calling conventions, so things might interfere in unexpected ways.)
148    
149    ----------------------------------------------------------------------
150    Name: Matthias Blume
151    Date: 2001/06/07
152    Tag: blume-20010607-calls
153    Description:
154    
155    A number of internal changes related to C calls and calling conventions:
156    
157    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
158       number of bytes popped implicitly (by the callee).  In most cases
159       this field is 0 but on x86/win32 it is some non-zero value.  This
160       is information provided for the benefit of the "omit-frameptr" pass.
161    2. The CALL instruction on the x86 carries a similar "pops" field.
162       The instruction selection phase copies its value from the ML-Tree
163       CALL statement.
164    3. On all other architectures, the instruction selection phase checks
165       whether "pops=0" and complains if not.
166    4. The c-calls implementation for x86 now accepts two calling conventions:
167       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
168       up after the call and pops is set to 0.  For "stdcall", the caller
169       does nothing, leaving the cleanup to the callee; pops is set to
170       the number of bytes that were pushed onto the stack.
171    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
172       distinguish between "ccall" and "stdcall".
173    6. The UNIMP instruction has been added to the supported Sparc instruction
174       set. (This is needed for implementing the official C calling convention
175       on this architecture.)
176    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
177       work with the latest CM.
178    
179    ----------------------------------------------------------------------
180    Name: Matthias Blume
181    Date: 2001/06/05 15:10:00 EDT
182    Tag: blume-20010605-cm-index
183    Description:
184    
185    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
186    
187    1. CM can now generate "index files".  These are human-readable files
188       that list on a per-.cm-file basis each toplevel symbol defined or
189       imported.  The location of the index file for
190       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
191       To enable index-file generation, set CM.Control.generate_index to true
192       or export an environment-symbol: export CM_GENERATE_INDEX=true.
193    
194       The CM manual has been updated accordingly.
195    
196    2. I made some slight modifications to the c-calls API in MLRISC.
197    
198         a) There is now a callback to support saving/restoring of
199            dedicated but caller-save registers around the actual call
200            instruction.
201         b) One can optionally specify a comment-annotation for the
202            call instruction.
203    
204    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
205       (For example, the comment annotation shows the C prototype of
206        the function being called.)
207    
208    ----------------------------------------------------------------------
209    Name: Matthias Blume
210    Date: 2001/06/01 13:30:00 EDT
211    Tag: blume-20010601-nlffi-cleanup
212    Description:
213    
214    This is mostly a cleanup of MLFFI stuff:
215    
216       - some signature files have been put into a more exposed place
217       - the ugly 'f type parameter is gone (simplifies types tremendously!)
218       - ml-nlffigen changed accordingly
219       - tutorial updated
220    
221    Other changes:
222    
223       - author's affiliation in CM manual(s) updated
224       - some more recognized keywords added to Allen's sml.sty
225    
226    ----------------------------------------------------------------------
227    Name: Matthias Blume
228    Date: 2001/05/25 15:30:00 EDT
229    Tag: blume-20010525-iptr
230    Description:
231    
232      - put the official 110.33-README (as it appears on the ftp server) under
233        CVS
234      - fixed a small bug related to incomplete pointer types in
235        ml-nlffigen
236      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
237        (it does not need the 'f type parameter)
238    
239    ----------------------------------------------------------------------
240    Name: Matthias Blume
241    Date: 2001/05/23 14:30:00 EDT
242    Tag: Release_110_33
243    Description:
244    
245    New version number (110.33).  New bootfiles.
246    
247    ----------------------------------------------------------------------
248    Name: Matthias Blume
249    Date: 2001/05/22 18:06:00 EDT
250    Tag: blume-20010522-targets
251    Description:
252    
253    Made install.sh use file config/targets.customized if it exists, falling
254    back to config/targets if it doesn't.  This way one can have a customized
255    version of the targets file without touching the "real thing", thus
256    eliminating the constant fear of accidentally checking something bogus
257    back into the CVS repository...  (File config/targets.customized must
258    not be added to the repository!)
259    
260    ----------------------------------------------------------------------
261    Name: Matthias Blume
262    Date: 2001/05/22 16:30:00 EDT
263    Tag: blume-20010522-minitut
264    Description:
265    
266    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
267       struct returns.
268    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
269       incomplete, preliminary documentation for NLFFI.
270    
271    ----------------------------------------------------------------------
272    Name: Matthias Blume
273    Date: 2001/05/14 11:30:00 EDT
274    Tag: blume-20010514-script
275    Description:
276    
277    Some bugs in install script fixed.
278    
279    In addition to that I also made a slight change to the NLFFI API:
280    Functors generated by ml-nlffigen now take the dynamic library as a
281    straight functor argument, not as a suspended one.  (The original
282    functor code used to force the suspension right away anyway, so there
283    was nothing gained by this complication of the interface.)
284    
285    ----------------------------------------------------------------------
286    Name: Matthias Blume
287    Date: 2001/05/11 14:35:00 EDT
288    Tag: blume-20010511-ml-nlffi
289    Description:
290    
291    I finally took the plunge and added my new FFI code to the main
292    repository.  For x86-linux it is now ready for prime-time.
293    
294    There are two new subdirectories of "src":
295    
296      - ml-nlffi-lib:
297           The utility library for programs using the FFI interface.
298           Here is the implementation of $/c.cm and its associated low-level
299           partners $/c-int.cm and $/memory.cm.
300      - ml-nlffigen:
301           A stand-alone program for generating ML glue code from C source
302           code.
303    
304    Building ml-nlffigen requires $/ckit-lib.cm.
305    
306    The config/install.sh script has been updates to do the Right Thing
307    (hopefully).
308    
309    Notice that the source tree for the C-Kit will not be put under "src"
310    but directly under the installation root directory.  (This is the
311    structure that currently exists on the CVS server when you check out
312    module "sml".)  Fortunately, config/install.sh knows about this oddity.
313    
314    Bugs: No documentation yet.
315    
316    ----------------------------------------------------------------------
317    Name: Matthias Blume
318    Date: 2001/05/09 16:35:00 EDT
319    Tag: blume-20010509-cpscontract
320    Description:
321    
322    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
323    wrapper/unwrapper elimination did not decrement usage counts and some
324    dead variables got overlooked by the dead-up logic.)
325    
326    ----------------------------------------------------------------------
327    Name: Lal George
328    Date: 2001/05/08  17:26:09 EDT
329    Tag: george-20010508-omit-frameptr
330    Description:
331    
332    Changes to implement the omit-frame-pointer optimization to support
333    raw C calls. For now, there is only support on the Intel x86, but
334    other architectures will follow as more experience is gained with this.
335    
336    
337    ----------------------------------------------------------------------
338    Name: Matthias Blume
339    Date: 2001/05/07 14:40:00 EDT
340    Tag: blume-20010507-proxies
341    Description:
342    
343    I made into "proxy libraries" all libraries that qualify for such a
344    change.  (A qualifying library is a library that has another library or
345    groups as its sole member and repeats that member's export list
346    verbatim.  A proxy library avoids this repetition by omitting its export
347    list, effectively inheriting the list that its (only) member exports.
348    See the CM manual for more explanation.)
349    The main effect is that explicit export lists for these libraries
350    do not have to be kepts in sync, making maintenance a bit easier.
351    
352    I also added copyright notices to many .cm-files.
353    
354    Last but not least, I made a new set of bootfiles.
355    
356    ----------------------------------------------------------------------
357    Name: Matthias Blume
358    Date: 2001/05/04 17:00:00 EDT
359    Tag: blume-20010504-cm-lsplit
360    Description:
361    
362    0. John merged pending changes to $/smlnj-lib.cm
363    
364    1. Allen's previous change accidentally backed out of one of Lal's
365       earlier changes.  I undid this mistake (re-introducing Lal's change).
366    
367    2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
368       within the compiler where applicable.  There is some code simplification
369       because of that.
370    
371    3. The "split" phase (in FLINT) is now part of the default list of phases.
372       Compiler.Control.LambdaSplitting.* can be used to globally control the
373       lambda-splitting (cross-module-inlining) engine.  In addition to that,
374       it can now also be controlled on a per-source basis: CM has been taught
375       a new tool parameter applicable to ML source files.
376    
377       - To turn lambda-splitting off completely:
378            local open Compiler.Control.LambdaSplitting in
379                val _ = set Off
380            end
381       - To make "no lambda-splitting" the global default (but allow per-source
382         overriding); this is the initial setting:
383            local open Compiler.Control.LambdaSplitting in
384                val _ = set (Default NONE)
385            end
386       - To make "lambda-splitting with aggressiveness a" the global default
387         (and allow per-source overriding):
388            local open Compiler.Control.LambdaSplitting in
389                val _ = set (Default (SOME a))
390            end
391    
392       - To turn lambda-splitting off for a given ML souce file (say: a.sml)
393         write (in the respective .cm-file):
394            a.sml (lambdasplitting:off)
395       - To turn lambda-splitting for a.sml on with minimal aggressiveness:
396            a.sml (lambdasplitting:on)
397       - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
398         <a> is a decimal non-negative integer):
399            a.sml (lambdasplitting:<a>)
400       - To turn lambda-splitting for a.sml on with maximal aggressiveness:
401            a.sml (lambdasplitting:infinity)
402       - To use the global default for a.sml:
403            a.sml (lambdasplitting:default)
404         or simply
405            a.sml
406    
407    ----------------------------------------------------------------------
408    Name: Allen Leung
409    Date: 2001/05/04 01:57:00 EDT
410    Tag: leunga-20010504-sync
411    Description:
412    
413      MLRISC features.
414    
415      1. Fix to CMPXCHG instructions.
416      2. Changed RA interface to allow annotations in callbacks.
417      3. Added a new method to the stream interface to allow annotations updates.
418    
419    ----------------------------------------------------------------------
420    Name: Matthias Blume
421    Date: 2001/05/01 11:45:00 EDT
422    Tag: blume-20010501-pcedittmp
423    Description:
424    
425    Changed install.sh to use the current working directory instead of
426    /usr/tmp for a temporary file (pcedittmp).  The previous choice
427    of /usr/tmp caused trouble with MacOS X because of file premission
428    problems.
429    
430    ----------------------------------------------------------------------
431    Name: Matthias Blume
432    Date: 2001/04/20 11:10:00 EDT
433    Tag: blume-20010420-inMLflag
434    Description:
435    
436     - added vp_limitPtrMask to vproc-state.h
437       (for use by the raw-C-calls mechanism to implement proper interrupt
438        handling)
439     - made the ML compiler aware of various data-structure offsets so it
440       can generate code for accessing the vp_inML flag and vp_limitPtrMask
441     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
442       raw C-calls
443    
444    ----------------------------------------------------------------------
445    Name: Lal George
446    Date: 2001/04/20 09:15:28 EDT
447    Tag: george-20010420-macosX
448    Description:
449    
450     - Changes to port to Mac OS X; Darwin.
451    
452     - In the process I found that sqrt was broken on the PPC, because the
453       fsqrt instruction is not implemented.
454    
455    ----------------------------------------------------------------------
456    Name: Matthias Blume
457    Date: 2001/04/18 12:45:00 EDT
458    Tag: blume-20010418-ccalls
459    Description:
460    
461     - fixed two off-by-4 errors in the x86-specific c-calls implementation
462       (this bug prevented structure arguments containing pointers from being
463        passed correctly)
464     - changed the raw-C-call code in mlriscGen.sml in such a way that
465       structure arguments are represented as a pointer to the beginning
466       of the structure (instead of having a series of synthesized arguments,
467       one for each structure member)
468    
469     - made makeml script's verbosity level configurable via environment
470       variable (MAKEML_VERBOSITY)
471    
472     - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
473       in rawmem-x86.sml; we are now using the real thing
474    
475    ----------------------------------------------------------------------
476    Name: Matthias Blume
477    Date: 2001/03/22 16:25:00 EST
478    Tag: blume-20010322-bootfiles
479    Description:
480    
481    Created a new set of bootfiles (for your automatic installation convenience).
482    
483    ----------------------------------------------------------------------
484    Name: Matthias Blume
485    Date: 2001/03/22 15:10:00 EST
486    Tag: blume-20010322-rawmem-parcm
487    Description:
488    
489    1. All "raw memory access" primitives for the new FFI are implemented now
490       (at least on the x86).
491    2. Some further cleanup of CM's parallel make mechanism.
492    
493    ----------------------------------------------------------------------
494    Name: Matthias Blume
495    Date: 2001/03/19 17:53:00 EST
496    Tag: blume-20010319-parallel
497    Description:
498    
499    Parallel make (using compile servers) now works again.
500    
501    To this end, CM.stabilize and CMB.make have been modified to work in
502    two passes when compile servers are attached:
503       1. Compile everything, do not perform stabilization; this pass
504          uses compile servers
505       2. Stabilize everything; this pass does not use compile servers
506    If there are no compile servers, the two passes are combined into one
507    (as before).  Splitting the passes increases the inherent parallelism
508    in the dependency graph because the entire graph including all
509    libraries is available at the same time.  This, in turn, improves
510    server utilization.  The downside is that the master process will
511    have to do some extra work after compilation is done (because for
512    technical reasons it must re-read all the binfiles during stabilization).
513    
514    ----------------------------------------------------------------------
515    Name: Matthias Blume
516    Date: 2001/03/16 12:22:00 EST
517    Tag: blume-20010316-bootfiles
518    Description:
519    
520    Created a new set of bootfiles (for your automatic installation convenience).
521    
522    ----------------------------------------------------------------------
523    Name: Matthias Blume
524    Date: 2001/03/16 11:00:00 EST
525    Tag: blume-20010316-MLTREE-fixup
526    Description:
527    
528    This is a minor fixup for an (untagged) earlier commit by Allen.
529    (A file was missing).
530    
531    ----------------------------------------------------------------------
532    Name: Allen Leung
533    Date: Mon Mar  5 18:54:57 EST 2001
534    Tag: leunga-20010305-cut-support
535    
536    1. New support for alternative control-flow in MLTREE.
537       Currently we support
538    
539          FLOW_TO(CALL ...., [k1,...,kn])
540    
541       This is needed for 'cuts to' in C-- and try/handle-like constructs
542       in Moby
543    
544       New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
545    
546    2. Register Allocator
547    
548       Changes in interface [from Fermin, John]
549    
550    3. Alpha 8-bit SLL support [Fermin]
551    
552    4. All architectures
553    
554       A new module (ClusterExpandCopies) for expanding parallel copies.
555    
556    ----------------------------------------------------------------------
557    Name: Allen Leung
558    Date: 2001/02/27 23:07:00 EST
559    Tag: leunga-20010227-minor-stuff
560    
561    1. Alpha bug fix for CMOVNE
562    2. Handle mltree COND(..,FCMP ...,...)
563    3. Bug fix in simplifier
564    
565    ----------------------------------------------------------------------
566    Name: Matthias Blume
567    Date: 2001/01/30 17:50:00 EST
568    Tag: blume-20010130-sync
569    Description:
570    
571    This is just a minor update to sync my devel branch with the main brach.
572    The only visible change is the addition of some README files.
573    
574    ----------------------------------------------------------------------
575    Name: Matthias Blume
576    Date: 2001/01/12 23:30:00 JST
577    Tag: blume-20010112-bootfiles
578    Description:
579    
580    Made a new set of bootfiles that goes with the current state of the
581    repository.
582    
583    ----------------------------------------------------------------------
584    Name: Matthias Blume
585    Date: 2001/01/12 21:20:00 JST
586    Tag: blume-20010112-sync
587    Description:
588    
589    I am just flushing out some minor changes that had accumulated in
590    my private branch in order to sync with the main tree.  (This is
591    mainly because I had CVS trouble when trying to merge _into_ my
592    private branch.)
593    
594    Most people should be completely unaffected by this.
595    
596    ----------------------------------------------------------------------
597    Name: Allen Leung
598    Date: Thu Jan 11 21:03:00 EST 2001
599    Tag: leunga-20010111-labexp=mltree
600    Description:
601    
602    1.  Removed the type LabelExp and replace it by MLTree.
603    2.  Rewritten mltree-simplify with the pattern matcher tool.
604    3.  There were some bugs in alpha code generator which would break
605        64-bit code generation.
606    4.  Redo the tools to generate code with the
607    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
608        are now generated by perl scripts.
609    
610    ----------------------------------------------------------------------
611    Name: Matthias Blume
612    Date: 2001/01/10 21:55:00 JST
613    Tag: blume-20010110-rcc
614    Description:
615    
616    The RCC stuff now seems to work (but only on the x86).
617    This required hacking of the c-calls interface (and -implementation) in
618    MLRISC.
619    
620    Normal compiler users should be unaffected.
621    
622    ----------------------------------------------------------------------
623    Name: Matthias Blume
624    Date: 2001/01/09 01:20:00 JST
625    Tag: blume-20010109-rcc
626    Description:
627    
628    This is a fairly big patch, flushing out a large number of pending
629    changes that I made to my development copy over the last couple of days.
630    
631    Of practical relevance at this moment is a workaround for a pickling
632    bug that Allen ran into the other day.  The cause of the bug itself is
633    still unknown and it might be hard to fix it properly, but the
634    workaround has some merits of its own (namely somewhat reducing pickling
635    overhead for certain libraries).  Therefore, I think this solution should
636    be satisfactory at this time.
637    
638    The rest of the changes (i.e., the vast majority) has to do with my
639    ongoing efforts of providing direct support for C function calls from
640    ML.  At the moment there is a new primop "RAW_CCALL", typing magic
641    in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
642    case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
643    translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
644    handle RCC.
645    
646    The last part (the changes to mlriscGen.sml) are still known to be
647    wrong on the x86 and not implemented on all other architectures.  But
648    the infrastructure is in place. I had to change a few functor
649    signatures in the backend to be able to route the CCalls interface
650    from MLRISC there, and I had to specialize the mltree type (on the
651    x86) to include the necessary extensions. (The extensions themselves
652    were already there and redy to go in MLRISC/x86).
653    
654    Everything should be very happy as soon as someone helps me with
655    mlriscGen.sml...
656    
657    In any case, nothing of this should matter to anyone as long as the
658    new primop is not being used (which is going to be the case unless you
659    find it where I hid it :). The rest of the compiler is completely
660    unaffected.
661    
662    ----------------------------------------------------------------------
663    Name: Matthias Blume
664    Date: 2001/01/05 00:30:00 JST
665    Tag: blume-20010105-primops
666    Description:
667    
668    Added some experimental support for work that I am doing right now.
669    These changes mostly concern added primops, but there is also a new
670    experimental C library in the runtime system (but currently not enabled
671    anywhere except on Linux/X86).
672    
673    In the course of adding primops (and playing with them), I discovered that
674    Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
675    broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
676    To recover, I made type information in INL_PRIM mandatory and changed
677    prim.sml as well as built-in.sml accordingly.  The InLine structure now
678    has complete, correct type information (i.e., no bottom types).
679    
680    Since all these changes mean that we need new binfiles, I also bumped the
681    version number to 110.32.1.
682    
683    ----------------------------------------------------------------------
684    Name: Matthias Blume
685    Date: 2000/12/30 22:10:00 JST
686    Tag: blume-20001230-various
687    Description:
688    
689    Added proxy libraries for MLRISC and let MLRISC libraries refer
690    to each other using path anchors.  (See CM manual for explanation.)
691    
692    Updated CM documentation.
693    
694    Fixed some bugs in CM.
695    
696    Implemented "proxy" libraries (= syntactic sugar for CM).
697    
698    Added "-quiet" option to makeml and changed runtime system accordingly.
699    
700    Added cleanup handler for exportML to reset timers and compiler stats.
701    
702    ----------------------------------------------------------------------
703    Name: Lal George
704    Date: 2000/12/22 22:22:58 EST 2000
705    Tag: Release_110_32
706    Description:
707    
708            Infinite precision used throughout MLRISC.
709            see MLRISC/mltree/machine-int.sig
710    
711    ----------------------------------------------------------------------
712    Name: Matthias Blume
713    Date: 2000/12/22 23:16:00 JST
714    Tag: blume-20001222-warn
715    Description:
716    
717    Corrected wording and formatting of some CM warning message which I
718    broke in my previous patch.
719    
720    ----------------------------------------------------------------------
721    Name: Matthias Blume
722    Date: 2000/12/22 21:20:00 JST
723    Tag: blume-20001222-anchorenv
724    Description:
725    
726    Fixed CM's handling of anchor environments in connection with CMB.make.
727    
728    ----------------------------------------------------------------------
729    Name: Matthias Blume
730    Date: 2000/12/22 13:15:00 JST
731    Tag: blume-20001222-cleanup
732    Description:
733    
734    Removed src/cm/ffi which does not (and did not) belong here.
735    
736    ----------------------------------------------------------------------
737    Name: Matthias Blume
738    Date: 2000/12/21 23:55:00 JST
739    Tag: blume-20001221-exn
740    Description:
741    
742    Probably most important: CM no longer silently swallows all exceptions
743    in the compiler.
744    Plus: some other minor CM changes.  For example, CM now reports some
745    sizes for generated binfiles (code, data, envpickle, lambdapickle).
746    
747    ----------------------------------------------------------------------
748    Name: Matthias Blume
749    Date: 2000/12/15 00:01:05 JST
750    Tag: blume-20001215-dirtool
751    Description:
752    
753    - "dir" tool added.
754    - improvements and cleanup to Tools structure
755    - documentation updates
756    
757    ----------------------------------------------------------------------
758    Name: Allen Leung
759    Date: Thu Dec 14 03:45:24 EST 2000
760    Description:
761    Tag:  leunga-20001214-int-inf
762    Description:
763    
764       In IntInf, added these standard functions, which are missing from our
765    implementation:
766    
767        andb : int * int -> int
768        xorb : int * int -> int
769        orb  : int * int -> int
770        notb : int -> int
771         <<   : int * word -> int
772        ~>>  : int * word -> int
773    
774       Not tested, I hope they are correct.
775    
776    ----------------------------------------------------------------------
777    Name: Allen Leung
778    Date: Fri Dec  8 19:23:26 EST 2000
779    Description:
780    Tag:  leunga-20001208-nowhere
781    Description:
782    
783      Slight improvements to the 'nowhere' tool to handle OR-patterns,
784    to generate better error messages etc.  Plus a brief manual.
785    
786    ----------------------------------------------------------------------
787    Name: Lal George
788    Date: 2000/12/08 09:54:02 EST 2000
789    Tag: Release_110_31
790    Description:
791    
792    - Version 110.31
793    ----------------------------------------------------------------------
794    Name: Allen Leung
795    Date: Thu Dec  7 22:01:04 EST 2000
796    Tag:  leunga-20001207-cell-monster-hack
797    Description:
798    
799    Major MLRISC internal changes.  Affect all clients.
800    Summary:
801    
802    1.  Type CELLS.cell = int is now replaced by a datatype.
803        As a result, the old regmap is now gone.  Almost all interfaces
804        in MLRISC change as a consequence.
805    
806    2.  A new brand version of machine description tool (v3.0) that generates
807        modules expecting the new interface.  The old version is removed.
808    
809    3.  The RA interface has been further abstracted into two new functors.
810        RISC_RA and X86RA.  These functors have much simpler interfaces.
811        [See also directory MLRISC/demo.]
812    
813    4.  Some other new source->source code generation tools are available:
814    
815        a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
816        b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
817           I use this tool to generate the peephole optimizers---with the new
818           cell type changes, peephole rules are becoming difficult to write
819           without conditional pattern matching.
820    
821    5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
822        cover the entire MLRISC source tree so many things broke.
823    
824    6.  CM files have been moved to the subdirectory MLRISC/cm.
825        They are moved because there are a lot of them and they clutter up the
826        root dir.
827    
828    7.  More detailed documentation to come...
829    
830        NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
831        a makeml -rebuild first.  This is because of other other
832        changes that Matthias has made (see below).
833    
834    
835    ----------------------------------------------------------------------
836    Name: Matthias Blume
837    Date: 2000/11/30 23:12:00 JST
838    Tag: blume-20001130-filereorg
839    Description:
840    
841    Some manual updates and some file reorganizations in CM.
842    
843    ----------------------------------------------------------------------
844    Name: Matthias Blume
845    Date: 2000/11/24 17:45:00 JST
846    Tag: blume-20001124-link
847    Description:
848    
849    Drastically improved link traversal code for the case that the dynamic
850    value was already loaded at bootstrap time.  As a result, CM and CMB
851    now both load blazingly fast -- even on a very slow machine.  Also,
852    memory consumption has been further reduced by this.
853    
854    Warning: The format of the PIDMAP file has changed.  THerefore, to
855    bootstrap you have to do this:
856    
857    1. Run CMB.make
858    2. Make a symbolic link for the boot directory:
859         ln -s sml.boot.ARCH-OS xxx
860    3. "Rebuild" the boot directory:
861         ./makeml -boot xxx -rebuild sml ; rm xxx
862    4. Boot normally:
863          ./makeml
864    
865    ----------------------------------------------------------------------
866    Name: Matthias Blume
867    Date: 2000/11/21 21:20:00 JST
868    Tag: blume-20001121-tools
869    Description:
870    
871    Continued hacking on autoloading problem -- with success this time.
872    Also changed tool-plugin mechanism.  See new CM manual.
873    
874    ----------------------------------------------------------------------
875    Name: Matthias Blume
876    Date: 2000/11/19 14:30:00 JST
877    Tag:  blume-20001119-autoload
878    Description:
879    
880    Some hacking to make autoloading faster.  Success for CMB, no success
881    so far for CM.  There is a reduced structure CM' that autoloads faster.
882    (This is a temporary, non-documented hack to be eliminated again when
883    the general problem is solved.)
884    
885    ----------------------------------------------------------------------
886    Name: Matthias Blume
887    Date: 2000/11/17 14:10:00 JST
888    Tag: blume-20001117-pickle-lib
889    Description:
890    
891    1. Eliminated comp-lib.cm
892    2. Made pickle-lib.cm
893    3. Eliminated all uses of intset.sml (from comp-lib.cm)
894    4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
895       equivalent constructs from smlnj-lib.cm (INtHashTable).
896    5. Point 4. also goes for those uses of intmap.* in MLRISC.
897       Duplicated intmap modules thrown out.
898    6. Hunted down all duplicated SCC code and replaced it with
899       equivalent stuff (GraphSCCFn from smlnj-lib.cm).
900    7. Rewrote Feedback module.
901    8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
902       should be thrown out and equivalent modules from smlnj-lib.cm
903       should be used (IntRedBlackSet, IntListSet, ...).
904    
905    Confirmed that compiler compiles to fixpoint.
906    
907    ----------------------------------------------------------------------
908    Name: Allen Leung
909    Date: 2000/11/10 18:00:00
910    Tag: leunga-20001110-new-x86-fp
911    
912    A new x86 floating point code generator has been added.
913    By default this is turned off.  To turn this on, do:
914    
915        CM.autoload "$smlnj/compiler.cm";
916        Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
917    
918    Changes:
919    
920    1.  Changed FTAN to FPTAN so that the assembly output is correct.
921    2.  Changed the extension callback for FTANGENT to generate:
922    
923              fptan
924              fstp  %st(0)
925        instead of
926              fptan
927              fstpl ftempmem
928    
929    3.  Numerous assembly fixes for x86.
930    
931    5.  Cleaned up the machine code output module x86/x86MC.sml and added
932        support for a whole bunch of instructions and addressing modes:
933    
934          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
935          faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
936          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
937          fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
938          fxch %st(n)
939          fld %st(n)
940          fst %st(n)
941          fst mem
942          fstp %st(n)
943          fucom %st(n)
944          fucomp %st(n)
945    
946        All these are now generated when the fast fp mode is turned on.
947    
948    6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
949    
950    ----------------------------------------------------------------------
951    Name: Matthias Blume
952    Date: 2000/11/09 11:20:00 JST
953    Tag: blume-20001109-scc
954    Description:
955    
956    Eliminated some code duplication:
957    
958    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
959       (Otherwise the functor is useless.)
960    2. Used GraphSCCFn where SCCUtilFun was used previously.
961    3. Got rid of SCCUtilFun (in comp-lib.cm).
962    
963    ----------------------------------------------------------------------
964    Name: Lal George
965    Date: 2000/11/06 09:02:21 EST 2000
966    Tag: Release_110_30
967    Description:
968    
969    - Version 110.30
970    ----------------------------------------------------------------------
971    Name: Matthias Blume
972    Date: 2000/11/04 14:45:00
973    Tag: blume-20001104-mlbuild
974    Description:
975    
976    - Made ml-build faster on startup.
977    - Documentation fixes.
978    
979    ----------------------------------------------------------------------
980    Name: Matthias Blume
981    Date: 2000/11/02 17:00:00 JST
982    Tag: blume-20001102-condcomp
983    Description:
984    
985    - Small tweaks to pickler -- new BOOTFILES!
986    - Version bumped to 110.29.2.
987    - Added conditional compilation facility to init.cmi (see comment there).
988    ----------------------------------------------------------------------
989    Name: Allen Leung
990    Date: 2000/10/23 19:31:00
991    Tag: leunga-20001023-demo-ra
992    
993    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
994    2. Test programs for the graph library updated
995    3. Some new MLRISC demo programs added
996    
997    ----------------------------------------------------------------------
998    Name: Matthias Blume
999    Date: 2000/08/31 22:15:00 JST
1000    Tag: blume-20001017-errmsg
1001    Description:
1002    
1003    More error message grief: Where there used to be no messages, there
1004    now were some that had bogus error regions.  Fixed.
1005    
1006    ----------------------------------------------------------------------
1007    Name: Matthias Blume
1008    Date: 2000/08/31 17:30:00 JST
1009    Tag: blume-20001017-v110p29p1
1010    Description:
1011    
1012    I made a version 110.29.1 with new bootfiles.
1013    
1014    Changes:  Modified pickler/unpickler for faster and leaner unpickling.
1015              CM documentation changes and a small bugfix in CM's error reporting.
1016    
1017    ----------------------------------------------------------------------
1018    Name: Lal George
1019    Date: 2000/09/27 14:42:35 EDT
1020    Tag: george-20000927-nodestatus
1021    Description:
1022    
1023    Changed the type of the nodestatus, so that:
1024    
1025            SPILLED(~1)             is now SPILLED
1026            SPILLED(m) where m>=0   is now MEMREG(m)
1027            SPILLED(s) where s<~1   is now SPILL_LOC(~s)
1028    
1029    ----------------------------------------------------------------------
1030    Name: Matthias Blume
1031    Date: 2000/09/07 14:45:00 JST
1032    Tag: blume-20000907-cmerrmsg
1033    Description:
1034    
1035    Small tweak to CM to avoid getting ML syntax error messages twice.
1036    
1037    ----------------------------------------------------------------------
1038    Name: Matthias Blume
1039    Date: 2000/08/31 18:00:00 JST
1040    Tag: blume-20000831-cvsbootfiles
1041    Description:
1042    
1043    New URL for boot files (because the 110.29 files on the BL server do
1044    now work correctly with my updated install scripts for yacc and lex).
1045    
1046    ----------------------------------------------------------------------
1047    Name: Matthias Blume
1048    Date: 2000/08/08 12:33:00 JST
1049    Tag: blume-20000808-manual
1050    Description:
1051    
1052    Tiny update to CM manual.
1053    
1054    ----------------------------------------------------------------------
1055    Name: Allen Leung
1056    Date: 2000/08/7 19:31:00
1057    Tag: leunga-20000807-a-whole-bunch-of-stuff
1058    
1059      Moby, C--, SSA, x86, machine descriptions etc.  Should only affect C--
1060    and Mobdy.
1061    
1062    1.  x86
1063    
1064       a.  Fixes to peephole module by John and Dan.
1065       b.  Assembly fix to SETcc by Allen.
1066       c.  Fix to c-call by John.
1067       d.  Fix to spilling by John.  (This one deals with the missing FSTPT case)
1068       e.  Instruction selection optimization to SETcc as suggested by John.
1069    
1070           For example,
1071    
1072            MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
1073    
1074           should generate:
1075    
1076            MOVL a, x
1077            SUBL b, x
1078            SHRL 31, x
1079    
1080    2.  IR stuff
1081    
1082         A bunch of new DJ-graph related algorithms added.  These
1083         speed up SSA construction.
1084    
1085    3.  SSA + Scheduling
1086    
1087         Added code for SSA and scheduling to the repository
1088    
1089    ----------------------------------------------------------------------
1090    Name: Lal George
1091    Date: 2000/07/27 11:53:14 EDT
1092    
1093    Tag: lal-20000727-linux-ppc
1094    Description:
1095    
1096     Made changes to support Linux PPC.
1097     p.s. I have confirmation that the 110.29 boot files work fine.
1098    
1099    ----------------------------------------------------------------------
1100    Name: Matthias Blume
1101    Date: 2000/07/27 17:40:00 JST
1102    Tag: blume-20000727-scripts
1103    Description:
1104    
1105    !!!! WARNING !!!!
1106    You must recompile the runtime system!
1107    !!!! WARNING !!!!
1108    
1109    This is basically another round of script-enhancements:
1110    
1111    1. sml, ml-build, and ml-makedepend accept options -D and -U to define
1112       and undefine CM preprocessor symbols.
1113    
1114    2. ml-build avoids generating a new heap image if it finds that the
1115       existing one is still ok.  (The condition is that no ML file had to
1116       be recompiled and all ML files are found to be older that the heap
1117       file.)
1118    
1119       To make this work smoothly, I also hacked the runtime system as
1120       well as SMLofNJ.SysInfo to get access to the heap image suffix
1121       (.sparc-solaris, ...) that is currently being used.
1122    
1123       Moreover, the signature of CM.mk_standalone has changed.  See the
1124       CM manual.
1125    
1126    3. ml-makedepend accepts additional options -n, -a, and -o.  (See the
1127       CM manual for details.)
1128    
1129    4. More CM manual updates:
1130        - all of the above has been documented.
1131        - there is now a section describing the (CM-related) command line
1132          arguments that are accepted by the "sml" command
1133    
1134  ----------------------------------------------------------------------  ----------------------------------------------------------------------
1135  Name: Matthias Blume  Name: Matthias Blume
1136  Date: 2000/07/25 16:20:00 JST  Date: 2000/07/25 16:20:00 JST

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