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Diff of /sml/trunk/HISTORY

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revision 773, Mon Jan 8 16:18:37 2001 UTC revision 852, Tue Jun 26 02:56:11 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 22:55:00 EDT
18    Tag: blume-20010625-x86pc
19    Description:
20    
21    Fixed a nasty bug in the X86 assembly code that caused signal
22    handlers to fail (crash) randomly.
23    
24    ----------------------------------------------------------------------
25    Name: Matthias Blume
26    Date: 2001/06/25 12:05:00 EDT
27    Tag: blume-20010625-nlffigen
28    Description:
29    
30    This update fixes a number of minor bugs in ml-nlffigen as reported by
31    Nick Carter <nbc@andrew.cmu.edu>.
32    
33      1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
34      2. Default names for generated files are now derived from the name of
35         the C file *without its directory*.  In particular, this causes generated
36         files to be placed locally even if the C file is in some system directory.
37      3. Default names for generated signatures and structures are also derived
38         from the C file name without its directory.  This avoids silly things
39         like "structure GL/GL".
40         (Other silly names are still possible because ml-nlffigen does not do
41          a thorough check of whether generated names are legal ML identifiers.
42          When in doubt, use command line arguments to force particular names.)
43    
44    ----------------------------------------------------------------------
45    Name: Matthias Blume
46    Date: 2001/06/21 12:25:00 EDT
47    Tag: blume-20010621-eXene
48    Description:
49    
50    eXene now compiles and (sort of) works again.
51    
52    The library name (for version > 110.33) is $/eXene.cm.
53    
54    I also added an new example in src/eXene/examples/nbody.  See the
55    README file there for details.
56    
57    ----------------------------------------------------------------------
58    Name: Matthias Blume
59    Date: 2001/06/20 16:40:00 EDT
60    Tag: blume-20010620-cml
61    Description:
62    
63    CML now compiles and works again.
64    
65    Libraries (for version > 110.33):
66    
67      $cml/cml.cm            Main CML library.
68      $cml/basis.cm          CML's version of $/basis.cm.
69      $cml/cml-internal.cm   Internal helper library.
70      $cml/core-cml.cm       Internal helper library.
71      $cml-lib/trace-cml.cm  Tracing facility.
72      $cml-lib/smlnj-lib.cm  CML's version of $/smlnj-lib.cm
73    
74    The installer (config/install.sh) has been taught how to properly
75    install this stuff.
76    
77    ----------------------------------------------------------------------
78    Name: Matthias Blume
79    Date: 2001/06/19 17:55:00 EDT
80    Tag: blume-20010619-instantiate
81    Description:
82    
83    This un-breaks the fix for bug 1432.
84    (The bug was originally fixed in 110.9 but I broke it again some
85    time after that.)
86    
87    ----------------------------------------------------------------------
88    Name: Matthias Blume
89    Date: 2001/06/19 17:25:00 EDT
90    Tag: blume-20010619-signals
91    Description:
92    
93    This should (hopefully) fix the long-standing signal handling bug.
94    (The runtime system was constructing a continuation record with an
95    incorrect descriptor which would cause the GC to drop data on the floor...)
96    
97    ----------------------------------------------------------------------
98    Name: Matthias Blume
99    Date: 2001/06/15 15:05:00 EDT
100    Tag: blume-20010615-moresparc
101    Description:
102    
103    Here is a short late-hour update related to Sparc c-calls:
104    
105     -- made handling of double-word arguments a bit smarter
106    
107     -- instruction selection phase tries to collapse certain clumsily
108        constructed ML-Trees; typical example:
109    
110            ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
111    
112        This currently has no further impact on SML/NJ since mlriscGen does
113        not seem to generate such patterns in the first place, and c-calls
114        (which did generate them in the beginning) has meanwhile been fixed
115        so as to avoid them as well.
116    
117    ----------------------------------------------------------------------
118    Name: Matthias Blume
119    Date: 2001/06/15 15:05:00 EDT
120    Tag: blume-20010615-sparc
121    Description:
122    
123    The purpose of this update is to provide an implementation of NLFFI
124    on Sparc machines.
125    
126    Here are the changes in detail:
127    
128       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
129       the Sparc implementation of the c-calls API.
130       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
131       for accessing the ML frame.  Thus, we have a real frame pointer and
132       can freely modify %sp without need for an omit-frame-ptr phase.
133       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
134       this case.
135       * ml-nlffigen has been taught to produce code for different architectures
136       and calling conventions.
137       * In a way similar to what was done in the x86 case, the Sparc
138       backend uses its own specific extension to mltree.  (For example,
139       it needs to be able to generate UNIMP instructions which are part
140       of the calling convention.)
141       * ml-nlffi-lib was reorganized to make it more modular (in particular,
142       to make it easier to plug in new machine- and os-dependent parts).
143    
144    There are some other fairly unrelated bug fixes and cleanups as well:
145    
146       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
147       that they properly share their libraries with existing SML/NJ libraries.
148       * I fixed a minor cosmetic bug in CM, supressing certain spurious
149       follow-up error messages.
150       * Updates to CM/CMB documentation.
151    
152    TODO items:
153    
154       * MLRISC should use a different register as its asmTemp on the Sparc.
155         (The current %o2 is a really bad choice because it is part of the
156         calling conventions, so things might interfere in unexpected ways.)
157    
158    ----------------------------------------------------------------------
159    Name: Matthias Blume
160    Date: 2001/06/07
161    Tag: blume-20010607-calls
162    Description:
163    
164    A number of internal changes related to C calls and calling conventions:
165    
166    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
167       number of bytes popped implicitly (by the callee).  In most cases
168       this field is 0 but on x86/win32 it is some non-zero value.  This
169       is information provided for the benefit of the "omit-frameptr" pass.
170    2. The CALL instruction on the x86 carries a similar "pops" field.
171       The instruction selection phase copies its value from the ML-Tree
172       CALL statement.
173    3. On all other architectures, the instruction selection phase checks
174       whether "pops=0" and complains if not.
175    4. The c-calls implementation for x86 now accepts two calling conventions:
176       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
177       up after the call and pops is set to 0.  For "stdcall", the caller
178       does nothing, leaving the cleanup to the callee; pops is set to
179       the number of bytes that were pushed onto the stack.
180    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
181       distinguish between "ccall" and "stdcall".
182    6. The UNIMP instruction has been added to the supported Sparc instruction
183       set. (This is needed for implementing the official C calling convention
184       on this architecture.)
185    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
186       work with the latest CM.
187    
188    ----------------------------------------------------------------------
189    Name: Matthias Blume
190    Date: 2001/06/05 15:10:00 EDT
191    Tag: blume-20010605-cm-index
192    Description:
193    
194    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
195    
196    1. CM can now generate "index files".  These are human-readable files
197       that list on a per-.cm-file basis each toplevel symbol defined or
198       imported.  The location of the index file for
199       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
200       To enable index-file generation, set CM.Control.generate_index to true
201       or export an environment-symbol: export CM_GENERATE_INDEX=true.
202    
203       The CM manual has been updated accordingly.
204    
205    2. I made some slight modifications to the c-calls API in MLRISC.
206    
207         a) There is now a callback to support saving/restoring of
208            dedicated but caller-save registers around the actual call
209            instruction.
210         b) One can optionally specify a comment-annotation for the
211            call instruction.
212    
213    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
214       (For example, the comment annotation shows the C prototype of
215        the function being called.)
216    
217    ----------------------------------------------------------------------
218    Name: Matthias Blume
219    Date: 2001/06/01 13:30:00 EDT
220    Tag: blume-20010601-nlffi-cleanup
221    Description:
222    
223    This is mostly a cleanup of MLFFI stuff:
224    
225       - some signature files have been put into a more exposed place
226       - the ugly 'f type parameter is gone (simplifies types tremendously!)
227       - ml-nlffigen changed accordingly
228       - tutorial updated
229    
230    Other changes:
231    
232       - author's affiliation in CM manual(s) updated
233       - some more recognized keywords added to Allen's sml.sty
234    
235    ----------------------------------------------------------------------
236    Name: Matthias Blume
237    Date: 2001/05/25 15:30:00 EDT
238    Tag: blume-20010525-iptr
239    Description:
240    
241      - put the official 110.33-README (as it appears on the ftp server) under
242        CVS
243      - fixed a small bug related to incomplete pointer types in
244        ml-nlffigen
245      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
246        (it does not need the 'f type parameter)
247    
248    ----------------------------------------------------------------------
249    Name: Matthias Blume
250    Date: 2001/05/23 14:30:00 EDT
251    Tag: Release_110_33
252    Description:
253    
254    New version number (110.33).  New bootfiles.
255    
256    ----------------------------------------------------------------------
257    Name: Matthias Blume
258    Date: 2001/05/22 18:06:00 EDT
259    Tag: blume-20010522-targets
260    Description:
261    
262    Made install.sh use file config/targets.customized if it exists, falling
263    back to config/targets if it doesn't.  This way one can have a customized
264    version of the targets file without touching the "real thing", thus
265    eliminating the constant fear of accidentally checking something bogus
266    back into the CVS repository...  (File config/targets.customized must
267    not be added to the repository!)
268    
269    ----------------------------------------------------------------------
270    Name: Matthias Blume
271    Date: 2001/05/22 16:30:00 EDT
272    Tag: blume-20010522-minitut
273    Description:
274    
275    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
276       struct returns.
277    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
278       incomplete, preliminary documentation for NLFFI.
279    
280    ----------------------------------------------------------------------
281    Name: Matthias Blume
282    Date: 2001/05/14 11:30:00 EDT
283    Tag: blume-20010514-script
284    Description:
285    
286    Some bugs in install script fixed.
287    
288    In addition to that I also made a slight change to the NLFFI API:
289    Functors generated by ml-nlffigen now take the dynamic library as a
290    straight functor argument, not as a suspended one.  (The original
291    functor code used to force the suspension right away anyway, so there
292    was nothing gained by this complication of the interface.)
293    
294    ----------------------------------------------------------------------
295    Name: Matthias Blume
296    Date: 2001/05/11 14:35:00 EDT
297    Tag: blume-20010511-ml-nlffi
298    Description:
299    
300    I finally took the plunge and added my new FFI code to the main
301    repository.  For x86-linux it is now ready for prime-time.
302    
303    There are two new subdirectories of "src":
304    
305      - ml-nlffi-lib:
306           The utility library for programs using the FFI interface.
307           Here is the implementation of $/c.cm and its associated low-level
308           partners $/c-int.cm and $/memory.cm.
309      - ml-nlffigen:
310           A stand-alone program for generating ML glue code from C source
311           code.
312    
313    Building ml-nlffigen requires $/ckit-lib.cm.
314    
315    The config/install.sh script has been updates to do the Right Thing
316    (hopefully).
317    
318    Notice that the source tree for the C-Kit will not be put under "src"
319    but directly under the installation root directory.  (This is the
320    structure that currently exists on the CVS server when you check out
321    module "sml".)  Fortunately, config/install.sh knows about this oddity.
322    
323    Bugs: No documentation yet.
324    
325    ----------------------------------------------------------------------
326    Name: Matthias Blume
327    Date: 2001/05/09 16:35:00 EDT
328    Tag: blume-20010509-cpscontract
329    Description:
330    
331    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
332    wrapper/unwrapper elimination did not decrement usage counts and some
333    dead variables got overlooked by the dead-up logic.)
334    
335    ----------------------------------------------------------------------
336    Name: Lal George
337    Date: 2001/05/08  17:26:09 EDT
338    Tag: george-20010508-omit-frameptr
339    Description:
340    
341    Changes to implement the omit-frame-pointer optimization to support
342    raw C calls. For now, there is only support on the Intel x86, but
343    other architectures will follow as more experience is gained with this.
344    
345    
346    ----------------------------------------------------------------------
347    Name: Matthias Blume
348    Date: 2001/05/07 14:40:00 EDT
349    Tag: blume-20010507-proxies
350    Description:
351    
352    I made into "proxy libraries" all libraries that qualify for such a
353    change.  (A qualifying library is a library that has another library or
354    groups as its sole member and repeats that member's export list
355    verbatim.  A proxy library avoids this repetition by omitting its export
356    list, effectively inheriting the list that its (only) member exports.
357    See the CM manual for more explanation.)
358    The main effect is that explicit export lists for these libraries
359    do not have to be kepts in sync, making maintenance a bit easier.
360    
361    I also added copyright notices to many .cm-files.
362    
363    Last but not least, I made a new set of bootfiles.
364    
365    ----------------------------------------------------------------------
366    Name: Matthias Blume
367    Date: 2001/05/04 17:00:00 EDT
368    Tag: blume-20010504-cm-lsplit
369    Description:
370    
371    0. John merged pending changes to $/smlnj-lib.cm
372    
373    1. Allen's previous change accidentally backed out of one of Lal's
374       earlier changes.  I undid this mistake (re-introducing Lal's change).
375    
376    2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
377       within the compiler where applicable.  There is some code simplification
378       because of that.
379    
380    3. The "split" phase (in FLINT) is now part of the default list of phases.
381       Compiler.Control.LambdaSplitting.* can be used to globally control the
382       lambda-splitting (cross-module-inlining) engine.  In addition to that,
383       it can now also be controlled on a per-source basis: CM has been taught
384       a new tool parameter applicable to ML source files.
385    
386       - To turn lambda-splitting off completely:
387            local open Compiler.Control.LambdaSplitting in
388                val _ = set Off
389            end
390       - To make "no lambda-splitting" the global default (but allow per-source
391         overriding); this is the initial setting:
392            local open Compiler.Control.LambdaSplitting in
393                val _ = set (Default NONE)
394            end
395       - To make "lambda-splitting with aggressiveness a" the global default
396         (and allow per-source overriding):
397            local open Compiler.Control.LambdaSplitting in
398                val _ = set (Default (SOME a))
399            end
400    
401       - To turn lambda-splitting off for a given ML souce file (say: a.sml)
402         write (in the respective .cm-file):
403            a.sml (lambdasplitting:off)
404       - To turn lambda-splitting for a.sml on with minimal aggressiveness:
405            a.sml (lambdasplitting:on)
406       - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
407         <a> is a decimal non-negative integer):
408            a.sml (lambdasplitting:<a>)
409       - To turn lambda-splitting for a.sml on with maximal aggressiveness:
410            a.sml (lambdasplitting:infinity)
411       - To use the global default for a.sml:
412            a.sml (lambdasplitting:default)
413         or simply
414            a.sml
415    
416    ----------------------------------------------------------------------
417    Name: Allen Leung
418    Date: 2001/05/04 01:57:00 EDT
419    Tag: leunga-20010504-sync
420    Description:
421    
422      MLRISC features.
423    
424      1. Fix to CMPXCHG instructions.
425      2. Changed RA interface to allow annotations in callbacks.
426      3. Added a new method to the stream interface to allow annotations updates.
427    
428    ----------------------------------------------------------------------
429    Name: Matthias Blume
430    Date: 2001/05/01 11:45:00 EDT
431    Tag: blume-20010501-pcedittmp
432    Description:
433    
434    Changed install.sh to use the current working directory instead of
435    /usr/tmp for a temporary file (pcedittmp).  The previous choice
436    of /usr/tmp caused trouble with MacOS X because of file premission
437    problems.
438    
439    ----------------------------------------------------------------------
440    Name: Matthias Blume
441    Date: 2001/04/20 11:10:00 EDT
442    Tag: blume-20010420-inMLflag
443    Description:
444    
445     - added vp_limitPtrMask to vproc-state.h
446       (for use by the raw-C-calls mechanism to implement proper interrupt
447        handling)
448     - made the ML compiler aware of various data-structure offsets so it
449       can generate code for accessing the vp_inML flag and vp_limitPtrMask
450     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
451       raw C-calls
452    
453    ----------------------------------------------------------------------
454    Name: Lal George
455    Date: 2001/04/20 09:15:28 EDT
456    Tag: george-20010420-macosX
457    Description:
458    
459     - Changes to port to Mac OS X; Darwin.
460    
461     - In the process I found that sqrt was broken on the PPC, because the
462       fsqrt instruction is not implemented.
463    
464    ----------------------------------------------------------------------
465    Name: Matthias Blume
466    Date: 2001/04/18 12:45:00 EDT
467    Tag: blume-20010418-ccalls
468    Description:
469    
470     - fixed two off-by-4 errors in the x86-specific c-calls implementation
471       (this bug prevented structure arguments containing pointers from being
472        passed correctly)
473     - changed the raw-C-call code in mlriscGen.sml in such a way that
474       structure arguments are represented as a pointer to the beginning
475       of the structure (instead of having a series of synthesized arguments,
476       one for each structure member)
477    
478     - made makeml script's verbosity level configurable via environment
479       variable (MAKEML_VERBOSITY)
480    
481     - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
482       in rawmem-x86.sml; we are now using the real thing
483    
484    ----------------------------------------------------------------------
485    Name: Matthias Blume
486    Date: 2001/03/22 16:25:00 EST
487    Tag: blume-20010322-bootfiles
488    Description:
489    
490    Created a new set of bootfiles (for your automatic installation convenience).
491    
492    ----------------------------------------------------------------------
493    Name: Matthias Blume
494    Date: 2001/03/22 15:10:00 EST
495    Tag: blume-20010322-rawmem-parcm
496    Description:
497    
498    1. All "raw memory access" primitives for the new FFI are implemented now
499       (at least on the x86).
500    2. Some further cleanup of CM's parallel make mechanism.
501    
502    ----------------------------------------------------------------------
503    Name: Matthias Blume
504    Date: 2001/03/19 17:53:00 EST
505    Tag: blume-20010319-parallel
506    Description:
507    
508    Parallel make (using compile servers) now works again.
509    
510    To this end, CM.stabilize and CMB.make have been modified to work in
511    two passes when compile servers are attached:
512       1. Compile everything, do not perform stabilization; this pass
513          uses compile servers
514       2. Stabilize everything; this pass does not use compile servers
515    If there are no compile servers, the two passes are combined into one
516    (as before).  Splitting the passes increases the inherent parallelism
517    in the dependency graph because the entire graph including all
518    libraries is available at the same time.  This, in turn, improves
519    server utilization.  The downside is that the master process will
520    have to do some extra work after compilation is done (because for
521    technical reasons it must re-read all the binfiles during stabilization).
522    
523    ----------------------------------------------------------------------
524    Name: Matthias Blume
525    Date: 2001/03/16 12:22:00 EST
526    Tag: blume-20010316-bootfiles
527    Description:
528    
529    Created a new set of bootfiles (for your automatic installation convenience).
530    
531    ----------------------------------------------------------------------
532    Name: Matthias Blume
533    Date: 2001/03/16 11:00:00 EST
534    Tag: blume-20010316-MLTREE-fixup
535    Description:
536    
537    This is a minor fixup for an (untagged) earlier commit by Allen.
538    (A file was missing).
539    
540    ----------------------------------------------------------------------
541    Name: Allen Leung
542    Date: Mon Mar  5 18:54:57 EST 2001
543    Tag: leunga-20010305-cut-support
544    
545    1. New support for alternative control-flow in MLTREE.
546       Currently we support
547    
548          FLOW_TO(CALL ...., [k1,...,kn])
549    
550       This is needed for 'cuts to' in C-- and try/handle-like constructs
551       in Moby
552    
553       New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
554    
555    2. Register Allocator
556    
557       Changes in interface [from Fermin, John]
558    
559    3. Alpha 8-bit SLL support [Fermin]
560    
561    4. All architectures
562    
563       A new module (ClusterExpandCopies) for expanding parallel copies.
564    
565    ----------------------------------------------------------------------
566    Name: Allen Leung
567    Date: 2001/02/27 23:07:00 EST
568    Tag: leunga-20010227-minor-stuff
569    
570    1. Alpha bug fix for CMOVNE
571    2. Handle mltree COND(..,FCMP ...,...)
572    3. Bug fix in simplifier
573    
574    ----------------------------------------------------------------------
575    Name: Matthias Blume
576    Date: 2001/01/30 17:50:00 EST
577    Tag: blume-20010130-sync
578    Description:
579    
580    This is just a minor update to sync my devel branch with the main brach.
581    The only visible change is the addition of some README files.
582    
583    ----------------------------------------------------------------------
584    Name: Matthias Blume
585    Date: 2001/01/12 23:30:00 JST
586    Tag: blume-20010112-bootfiles
587    Description:
588    
589    Made a new set of bootfiles that goes with the current state of the
590    repository.
591    
592    ----------------------------------------------------------------------
593    Name: Matthias Blume
594    Date: 2001/01/12 21:20:00 JST
595    Tag: blume-20010112-sync
596    Description:
597    
598    I am just flushing out some minor changes that had accumulated in
599    my private branch in order to sync with the main tree.  (This is
600    mainly because I had CVS trouble when trying to merge _into_ my
601    private branch.)
602    
603    Most people should be completely unaffected by this.
604    
605    ----------------------------------------------------------------------
606    Name: Allen Leung
607    Date: Thu Jan 11 21:03:00 EST 2001
608    Tag: leunga-20010111-labexp=mltree
609    Description:
610    
611    1.  Removed the type LabelExp and replace it by MLTree.
612    2.  Rewritten mltree-simplify with the pattern matcher tool.
613    3.  There were some bugs in alpha code generator which would break
614        64-bit code generation.
615    4.  Redo the tools to generate code with the
616    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
617        are now generated by perl scripts.
618    
619    ----------------------------------------------------------------------
620    Name: Matthias Blume
621    Date: 2001/01/10 21:55:00 JST
622    Tag: blume-20010110-rcc
623    Description:
624    
625    The RCC stuff now seems to work (but only on the x86).
626    This required hacking of the c-calls interface (and -implementation) in
627    MLRISC.
628    
629    Normal compiler users should be unaffected.
630    
631  ----------------------------------------------------------------------  ----------------------------------------------------------------------
632  Name: Matthias Blume  Name: Matthias Blume
633  Date: 2001/01/09 01:20:00 JST  Date: 2001/01/09 01:20:00 JST

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