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Diff of /sml/trunk/HISTORY

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revision 680, Mon Jul 3 06:35:55 2000 UTC revision 777, Fri Jan 12 12:17:38 2001 UTC
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13  Description:  Description:
14  ----------------------------------------------------------------------  ----------------------------------------------------------------------
15  Name: Matthias Blume  Name: Matthias Blume
16  Date: 2000/07/02 15:36:00 JST  Date: 2001/01/12 21:20:00 JST
17    Tag: blume-20010112-sync
18    Description:
19    
20    I am just flushing out some minor changes that had accumulated in
21    my private branch in order to sync with the main tree.  (This is
22    mainly because I had CVS trouble when trying to merge _into_ my
23    private branch.)
24    
25    Most people should be completely unaffected by this.
26    
27    ----------------------------------------------------------------------
28    Name: Allen Leung
29    Date: Thu Jan 11 21:03:00 EST 2001
30    Tag: leunga-20010111-labexp=mltree
31    Description:
32    
33    1.  Removed the type LabelExp and replace it by MLTree.
34    2.  Rewritten mltree-simplify with the pattern matcher tool.
35    3.  There were some bugs in alpha code generator which would break
36        64-bit code generation.
37    4.  Redo the tools to generate code with the
38    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
39        are now generated by perl scripts.
40    
41    ----------------------------------------------------------------------
42    Name: Matthias Blume
43    Date: 2001/01/10 21:55:00 JST
44    Tag: blume-20010110-rcc
45    Description:
46    
47    The RCC stuff now seems to work (but only on the x86).
48    This required hacking of the c-calls interface (and -implementation) in
49    MLRISC.
50    
51    Normal compiler users should be unaffected.
52    
53    ----------------------------------------------------------------------
54    Name: Matthias Blume
55    Date: 2001/01/09 01:20:00 JST
56    Tag: blume-20010109-rcc
57    Description:
58    
59    This is a fairly big patch, flushing out a large number of pending
60    changes that I made to my development copy over the last couple of days.
61    
62    Of practical relevance at this moment is a workaround for a pickling
63    bug that Allen ran into the other day.  The cause of the bug itself is
64    still unknown and it might be hard to fix it properly, but the
65    workaround has some merits of its own (namely somewhat reducing pickling
66    overhead for certain libraries).  Therefore, I think this solution should
67    be satisfactory at this time.
68    
69    The rest of the changes (i.e., the vast majority) has to do with my
70    ongoing efforts of providing direct support for C function calls from
71    ML.  At the moment there is a new primop "RAW_CCALL", typing magic
72    in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
73    case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
74    translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
75    handle RCC.
76    
77    The last part (the changes to mlriscGen.sml) are still known to be
78    wrong on the x86 and not implemented on all other architectures.  But
79    the infrastructure is in place. I had to change a few functor
80    signatures in the backend to be able to route the CCalls interface
81    from MLRISC there, and I had to specialize the mltree type (on the
82    x86) to include the necessary extensions. (The extensions themselves
83    were already there and redy to go in MLRISC/x86).
84    
85    Everything should be very happy as soon as someone helps me with
86    mlriscGen.sml...
87    
88    In any case, nothing of this should matter to anyone as long as the
89    new primop is not being used (which is going to be the case unless you
90    find it where I hid it :). The rest of the compiler is completely
91    unaffected.
92    
93    ----------------------------------------------------------------------
94    Name: Matthias Blume
95    Date: 2001/01/05 00:30:00 JST
96    Tag: blume-20010105-primops
97    Description:
98    
99    Added some experimental support for work that I am doing right now.
100    These changes mostly concern added primops, but there is also a new
101    experimental C library in the runtime system (but currently not enabled
102    anywhere except on Linux/X86).
103    
104    In the course of adding primops (and playing with them), I discovered that
105    Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
106    broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
107    To recover, I made type information in INL_PRIM mandatory and changed
108    prim.sml as well as built-in.sml accordingly.  The InLine structure now
109    has complete, correct type information (i.e., no bottom types).
110    
111    Since all these changes mean that we need new binfiles, I also bumped the
112    version number to 110.32.1.
113    
114    ----------------------------------------------------------------------
115    Name: Matthias Blume
116    Date: 2000/12/30 22:10:00 JST
117    Tag: blume-20001230-various
118    Description:
119    
120    Added proxy libraries for MLRISC and let MLRISC libraries refer
121    to each other using path anchors.  (See CM manual for explanation.)
122    
123    Updated CM documentation.
124    
125    Fixed some bugs in CM.
126    
127    Implemented "proxy" libraries (= syntactic sugar for CM).
128    
129    Added "-quiet" option to makeml and changed runtime system accordingly.
130    
131    Added cleanup handler for exportML to reset timers and compiler stats.
132    
133    ----------------------------------------------------------------------
134    Name: Lal George
135    Date: 2000/12/22 22:22:58 EST 2000
136    Tag: Release_110_32
137    Description:
138    
139            Infinite precision used throughout MLRISC.
140            see MLRISC/mltree/machine-int.sig
141    
142    ----------------------------------------------------------------------
143    Name: Matthias Blume
144    Date: 2000/12/22 23:16:00 JST
145    Tag: blume-20001222-warn
146    Description:
147    
148    Corrected wording and formatting of some CM warning message which I
149    broke in my previous patch.
150    
151    ----------------------------------------------------------------------
152    Name: Matthias Blume
153    Date: 2000/12/22 21:20:00 JST
154    Tag: blume-20001222-anchorenv
155    Description:
156    
157    Fixed CM's handling of anchor environments in connection with CMB.make.
158    
159    ----------------------------------------------------------------------
160    Name: Matthias Blume
161    Date: 2000/12/22 13:15:00 JST
162    Tag: blume-20001222-cleanup
163    Description:
164    
165    Removed src/cm/ffi which does not (and did not) belong here.
166    
167    ----------------------------------------------------------------------
168    Name: Matthias Blume
169    Date: 2000/12/21 23:55:00 JST
170    Tag: blume-20001221-exn
171    Description:
172    
173    Probably most important: CM no longer silently swallows all exceptions
174    in the compiler.
175    Plus: some other minor CM changes.  For example, CM now reports some
176    sizes for generated binfiles (code, data, envpickle, lambdapickle).
177    
178    ----------------------------------------------------------------------
179    Name: Matthias Blume
180    Date: 2000/12/15 00:01:05 JST
181    Tag: blume-20001215-dirtool
182    Description:
183    
184    - "dir" tool added.
185    - improvements and cleanup to Tools structure
186    - documentation updates
187    
188    ----------------------------------------------------------------------
189    Name: Allen Leung
190    Date: Thu Dec 14 03:45:24 EST 2000
191    Description:
192    Tag:  leunga-20001214-int-inf
193    Description:
194    
195       In IntInf, added these standard functions, which are missing from our
196    implementation:
197    
198        andb : int * int -> int
199        xorb : int * int -> int
200        orb  : int * int -> int
201        notb : int -> int
202         <<   : int * word -> int
203        ~>>  : int * word -> int
204    
205       Not tested, I hope they are correct.
206    
207    ----------------------------------------------------------------------
208    Name: Allen Leung
209    Date: Fri Dec  8 19:23:26 EST 2000
210    Description:
211    Tag:  leunga-20001208-nowhere
212    Description:
213    
214      Slight improvements to the 'nowhere' tool to handle OR-patterns,
215    to generate better error messages etc.  Plus a brief manual.
216    
217    ----------------------------------------------------------------------
218    Name: Lal George
219    Date: 2000/12/08 09:54:02 EST 2000
220    Tag: Release_110_31
221    Description:
222    
223    - Version 110.31
224    ----------------------------------------------------------------------
225    Name: Allen Leung
226    Date: Thu Dec  7 22:01:04 EST 2000
227    Tag:  leunga-20001207-cell-monster-hack
228    Description:
229    
230    Major MLRISC internal changes.  Affect all clients.
231    Summary:
232    
233    1.  Type CELLS.cell = int is now replaced by a datatype.
234        As a result, the old regmap is now gone.  Almost all interfaces
235        in MLRISC change as a consequence.
236    
237    2.  A new brand version of machine description tool (v3.0) that generates
238        modules expecting the new interface.  The old version is removed.
239    
240    3.  The RA interface has been further abstracted into two new functors.
241        RISC_RA and X86RA.  These functors have much simpler interfaces.
242        [See also directory MLRISC/demo.]
243    
244    4.  Some other new source->source code generation tools are available:
245    
246        a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
247        b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
248           I use this tool to generate the peephole optimizers---with the new
249           cell type changes, peephole rules are becoming difficult to write
250           without conditional pattern matching.
251    
252    5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
253        cover the entire MLRISC source tree so many things broke.
254    
255    6.  CM files have been moved to the subdirectory MLRISC/cm.
256        They are moved because there are a lot of them and they clutter up the
257        root dir.
258    
259    7.  More detailed documentation to come...
260    
261        NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
262        a makeml -rebuild first.  This is because of other other
263        changes that Matthias has made (see below).
264    
265    
266    ----------------------------------------------------------------------
267    Name: Matthias Blume
268    Date: 2000/11/30 23:12:00 JST
269    Tag: blume-20001130-filereorg
270    Description:
271    
272    Some manual updates and some file reorganizations in CM.
273    
274    ----------------------------------------------------------------------
275    Name: Matthias Blume
276    Date: 2000/11/24 17:45:00 JST
277    Tag: blume-20001124-link
278    Description:
279    
280    Drastically improved link traversal code for the case that the dynamic
281    value was already loaded at bootstrap time.  As a result, CM and CMB
282    now both load blazingly fast -- even on a very slow machine.  Also,
283    memory consumption has been further reduced by this.
284    
285    Warning: The format of the PIDMAP file has changed.  THerefore, to
286    bootstrap you have to do this:
287    
288    1. Run CMB.make
289    2. Make a symbolic link for the boot directory:
290         ln -s sml.boot.ARCH-OS xxx
291    3. "Rebuild" the boot directory:
292         ./makeml -boot xxx -rebuild sml ; rm xxx
293    4. Boot normally:
294          ./makeml
295    
296    ----------------------------------------------------------------------
297    Name: Matthias Blume
298    Date: 2000/11/21 21:20:00 JST
299    Tag: blume-20001121-tools
300    Description:
301    
302    Continued hacking on autoloading problem -- with success this time.
303    Also changed tool-plugin mechanism.  See new CM manual.
304    
305    ----------------------------------------------------------------------
306    Name: Matthias Blume
307    Date: 2000/11/19 14:30:00 JST
308    Tag:  blume-20001119-autoload
309    Description:
310    
311    Some hacking to make autoloading faster.  Success for CMB, no success
312    so far for CM.  There is a reduced structure CM' that autoloads faster.
313    (This is a temporary, non-documented hack to be eliminated again when
314    the general problem is solved.)
315    
316    ----------------------------------------------------------------------
317    Name: Matthias Blume
318    Date: 2000/11/17 14:10:00 JST
319    Tag: blume-20001117-pickle-lib
320    Description:
321    
322    1. Eliminated comp-lib.cm
323    2. Made pickle-lib.cm
324    3. Eliminated all uses of intset.sml (from comp-lib.cm)
325    4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
326       equivalent constructs from smlnj-lib.cm (INtHashTable).
327    5. Point 4. also goes for those uses of intmap.* in MLRISC.
328       Duplicated intmap modules thrown out.
329    6. Hunted down all duplicated SCC code and replaced it with
330       equivalent stuff (GraphSCCFn from smlnj-lib.cm).
331    7. Rewrote Feedback module.
332    8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
333       should be thrown out and equivalent modules from smlnj-lib.cm
334       should be used (IntRedBlackSet, IntListSet, ...).
335    
336    Confirmed that compiler compiles to fixpoint.
337    
338    ----------------------------------------------------------------------
339    Name: Allen Leung
340    Date: 2000/11/10 18:00:00
341    Tag: leunga-20001110-new-x86-fp
342    
343    A new x86 floating point code generator has been added.
344    By default this is turned off.  To turn this on, do:
345    
346        CM.autoload "$smlnj/compiler.cm";
347        Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
348    
349    Changes:
350    
351    1.  Changed FTAN to FPTAN so that the assembly output is correct.
352    2.  Changed the extension callback for FTANGENT to generate:
353    
354              fptan
355              fstp  %st(0)
356        instead of
357              fptan
358              fstpl ftempmem
359    
360    3.  Numerous assembly fixes for x86.
361    
362    5.  Cleaned up the machine code output module x86/x86MC.sml and added
363        support for a whole bunch of instructions and addressing modes:
364    
365          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
366          faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
367          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
368          fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
369          fxch %st(n)
370          fld %st(n)
371          fst %st(n)
372          fst mem
373          fstp %st(n)
374          fucom %st(n)
375          fucomp %st(n)
376    
377        All these are now generated when the fast fp mode is turned on.
378    
379    6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
380    
381    ----------------------------------------------------------------------
382    Name: Matthias Blume
383    Date: 2000/11/09 11:20:00 JST
384    Tag: blume-20001109-scc
385    Description:
386    
387    Eliminated some code duplication:
388    
389    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
390       (Otherwise the functor is useless.)
391    2. Used GraphSCCFn where SCCUtilFun was used previously.
392    3. Got rid of SCCUtilFun (in comp-lib.cm).
393    
394    ----------------------------------------------------------------------
395    Name: Lal George
396    Date: 2000/11/06 09:02:21 EST 2000
397    Tag: Release_110_30
398    Description:
399    
400    - Version 110.30
401    ----------------------------------------------------------------------
402    Name: Matthias Blume
403    Date: 2000/11/04 14:45:00
404    Tag: blume-20001104-mlbuild
405    Description:
406    
407    - Made ml-build faster on startup.
408    - Documentation fixes.
409    
410    ----------------------------------------------------------------------
411    Name: Matthias Blume
412    Date: 2000/11/02 17:00:00 JST
413    Tag: blume-20001102-condcomp
414    Description:
415    
416    - Small tweaks to pickler -- new BOOTFILES!
417    - Version bumped to 110.29.2.
418    - Added conditional compilation facility to init.cmi (see comment there).
419    ----------------------------------------------------------------------
420    Name: Allen Leung
421    Date: 2000/10/23 19:31:00
422    Tag: leunga-20001023-demo-ra
423    
424    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
425    2. Test programs for the graph library updated
426    3. Some new MLRISC demo programs added
427    
428    ----------------------------------------------------------------------
429    Name: Matthias Blume
430    Date: 2000/08/31 22:15:00 JST
431    Tag: blume-20001017-errmsg
432    Description:
433    
434    More error message grief: Where there used to be no messages, there
435    now were some that had bogus error regions.  Fixed.
436    
437    ----------------------------------------------------------------------
438    Name: Matthias Blume
439    Date: 2000/08/31 17:30:00 JST
440    Tag: blume-20001017-v110p29p1
441    Description:
442    
443    I made a version 110.29.1 with new bootfiles.
444    
445    Changes:  Modified pickler/unpickler for faster and leaner unpickling.
446              CM documentation changes and a small bugfix in CM's error reporting.
447    
448    ----------------------------------------------------------------------
449    Name: Lal George
450    Date: 2000/09/27 14:42:35 EDT
451    Tag: george-20000927-nodestatus
452    Description:
453    
454    Changed the type of the nodestatus, so that:
455    
456            SPILLED(~1)             is now SPILLED
457            SPILLED(m) where m>=0   is now MEMREG(m)
458            SPILLED(s) where s<~1   is now SPILL_LOC(~s)
459    
460    ----------------------------------------------------------------------
461    Name: Matthias Blume
462    Date: 2000/09/07 14:45:00 JST
463    Tag: blume-20000907-cmerrmsg
464    Description:
465    
466    Small tweak to CM to avoid getting ML syntax error messages twice.
467    
468    ----------------------------------------------------------------------
469    Name: Matthias Blume
470    Date: 2000/08/31 18:00:00 JST
471    Tag: blume-20000831-cvsbootfiles
472    Description:
473    
474    New URL for boot files (because the 110.29 files on the BL server do
475    now work correctly with my updated install scripts for yacc and lex).
476    
477    ----------------------------------------------------------------------
478    Name: Matthias Blume
479    Date: 2000/08/08 12:33:00 JST
480    Tag: blume-20000808-manual
481    Description:
482    
483    Tiny update to CM manual.
484    
485    ----------------------------------------------------------------------
486    Name: Allen Leung
487    Date: 2000/08/7 19:31:00
488    Tag: leunga-20000807-a-whole-bunch-of-stuff
489    
490      Moby, C--, SSA, x86, machine descriptions etc.  Should only affect C--
491    and Mobdy.
492    
493    1.  x86
494    
495       a.  Fixes to peephole module by John and Dan.
496       b.  Assembly fix to SETcc by Allen.
497       c.  Fix to c-call by John.
498       d.  Fix to spilling by John.  (This one deals with the missing FSTPT case)
499       e.  Instruction selection optimization to SETcc as suggested by John.
500    
501           For example,
502    
503            MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
504    
505           should generate:
506    
507            MOVL a, x
508            SUBL b, x
509            SHRL 31, x
510    
511    2.  IR stuff
512    
513         A bunch of new DJ-graph related algorithms added.  These
514         speed up SSA construction.
515    
516    3.  SSA + Scheduling
517    
518         Added code for SSA and scheduling to the repository
519    
520    ----------------------------------------------------------------------
521    Name: Lal George
522    Date: 2000/07/27 11:53:14 EDT
523    
524    Tag: lal-20000727-linux-ppc
525    Description:
526    
527     Made changes to support Linux PPC.
528     p.s. I have confirmation that the 110.29 boot files work fine.
529    
530    ----------------------------------------------------------------------
531    Name: Matthias Blume
532    Date: 2000/07/27 17:40:00 JST
533    Tag: blume-20000727-scripts
534    Description:
535    
536    !!!! WARNING !!!!
537    You must recompile the runtime system!
538    !!!! WARNING !!!!
539    
540    This is basically another round of script-enhancements:
541    
542    1. sml, ml-build, and ml-makedepend accept options -D and -U to define
543       and undefine CM preprocessor symbols.
544    
545    2. ml-build avoids generating a new heap image if it finds that the
546       existing one is still ok.  (The condition is that no ML file had to
547       be recompiled and all ML files are found to be older that the heap
548       file.)
549    
550       To make this work smoothly, I also hacked the runtime system as
551       well as SMLofNJ.SysInfo to get access to the heap image suffix
552       (.sparc-solaris, ...) that is currently being used.
553    
554       Moreover, the signature of CM.mk_standalone has changed.  See the
555       CM manual.
556    
557    3. ml-makedepend accepts additional options -n, -a, and -o.  (See the
558       CM manual for details.)
559    
560    4. More CM manual updates:
561        - all of the above has been documented.
562        - there is now a section describing the (CM-related) command line
563          arguments that are accepted by the "sml" command
564    
565    ----------------------------------------------------------------------
566    Name: Matthias Blume
567    Date: 2000/07/25 16:20:00 JST
568    Tag: blume-20000725-makedepend
569    Description:
570    
571    Added a script called ml-makedepend.  This can be used in makefiles
572    for Unix' make in a way very similar to the "makedepend" command for
573    C.
574    
575    The script internally uses function CM.sources.
576    
577    Synopsis:
578    
579        ml-makedepend [-f makefile] cmfile targetname
580    
581    The default for the makefile is "makefile" (or "Makefile" should
582    "makefile" not exist).
583    
584    ml-makedepend adds a cmfile/targetname-specific section to this
585    makefile (after removing the previous version of this section).  The
586    section contains a single dependency specification with targetname on
587    the LHS (targetname is an arbitrary name), and a list of files derived
588    from the cmfile on the RHS.  Some of the files on the RHS are
589    ARCH/OPSYS-specific.  Therefore, ml-makedepend inserts references to
590    "make" variables $(ARCH) and $(OPSYS) in place of the corresponding
591    path names.  The makefile writer is responsible for making sure that
592    these variables have correct at the time "make" is invoked.
593    
594    ----------------------------------------------------------------------
595    Name: Matthias Blume
596    Date: 2000/07/22 23:30:00 JST
597    Tag: blume-20000722-urlupdate
598    Description:
599    
600    Changed BOOT and config/srcarchiveurl to point to BL server:
601    
602        ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
603    
604    ----------------------------------------------------------------------
605    Name: Matthias Blume
606    Date: 2000/07/18 18:00:00 JST
607    Tag: blume-20000718-Version_110_29
608    Description:
609    
610    1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
611    
612    2. Updated config/version to 110.29
613    
614    3. Updated config/srcarchiveurl
615    
616    3. New boot files!
617       ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
618    
619    ----------------------------------------------------------------------
620    Name: Matthias Blume
621    Date: 2000/07/11 13:58:00 JST
622    Tag: blume-20000711-doctypo
623    Description:
624    
625    Fixed a few typos in CM manual.
626    
627    ----------------------------------------------------------------------
628    Name: Allen Leung
629    Date: 2000/06/15 00:38:00
630    Tag: leunga-20000704-sparc-x86
631    
632    1. x86 peephole improvement sp += k; sp -= k => nop  [from John]
633    2. fix to x86 RET bug [found by Dan Grossman]
634    3. sparc assembly bug fix for ticc instructions [found by Fermin]
635    
636       Affects c-- and moby only
637    
638    ----------------------------------------------------------------------
639    Name: Matthias Blume
640    Date: 2000/07/04 15:26:00
641    Tag: blume-20000704-trigger
642    Description:
643    
644    1. Improvements to CM manual.
645    2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
646       of getting a back-trace.  The function, when called, raises an
647       internal exception which explicitly carries the full back-trace history,
648       so it is unaffected by any intervening handle-raise pairs ("trivial"
649       or not).  The interactive loop will print that history once it arrives
650       at top level.
651       Short of having all exceptions implicitly carry the full history, the
652       recommended way of using this facility is:
653         - compile your program with instrumentation "on"
654         - run it, when it raises an exception, look at the history
655         - if the history is "cut off" because of some handler, go and modify
656           your program so that it explicitly calls BTrace.trigger
657         - recompile (still instrumented), and rerun; look at the full history
658    
659    ----------------------------------------------------------------------
660    Name: Matthias Blume
661    Date: 2000/07/03 15:36:00 JST
662  Tag: blume-20000702-manual  Tag: blume-20000702-manual
663  Description:  Description:
664    
665  Small corrections and updates to CM manual.  Small corrections and updates to CM manual.
666    
667  ----------------------------------------------------------------------  ----------------------------------------------------------------------
668  Name: Matthias Blumen  Name: Matthias Blume
669  Date: 2000/06/29 16:04:00 JST  Date: 2000/06/29 16:04:00 JST
670  Tag: blume-20000629-yacctool  Tag: blume-20000629-yacctool
671  Description:  Description:

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