Home My Page Projects Code Snippets Project Openings SML/NJ
Summary Activity Forums Tracker Lists Tasks Docs Surveys News SCM Files

SCM Repository

[smlnj] Diff of /sml/trunk/HISTORY
ViewVC logotype

Diff of /sml/trunk/HISTORY

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 615, Wed Apr 12 04:52:09 2000 UTC revision 729, Thu Nov 9 02:16:17 2000 UTC
# Line 11  Line 11 
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: 2000/11/09 11:20:00 JST
18    Tag: blume-20001109-scc
19    Description:
20    
21    Eliminated some code duplication:
22    
23    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
24       (Otherwise the functor is useless.)
25    2. Used GraphSCCFn where SCCUtilFun was used previously.
26    3. Got rid of SCCUtilFun (in comp-lib.cm).
27    
28    ----------------------------------------------------------------------
29    Name: Lal George
30    Date: 2000/11/06 09:02:21 EST 2000
31    Tag: Release_110_30
32    Description:
33    
34    - Version 110.30
35    ----------------------------------------------------------------------
36    Name: Matthias Blume
37    Date: 2000/11/04 14:45:00
38    Tag: blume-20001104-mlbuild
39    Description:
40    
41    - Made ml-build faster on startup.
42    - Documentation fixes.
43    
44    ----------------------------------------------------------------------
45    Name: Matthias Blume
46    Date: 2000/11/02 17:00:00 JST
47    Tag: blume-20001102-condcomp
48    Description:
49    
50    - Small tweaks to pickler -- new BOOTFILES!
51    - Version bumped to 110.29.2.
52    - Added conditional compilation facility to init.cmi (see comment there).
53    ----------------------------------------------------------------------
54    Name: Allen Leung
55    Date: 2000/10/23 19:31:00
56    Tag: leunga-20001023-demo-ra
57    
58    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
59    2. Test programs for the graph library updated
60    3. Some new MLRISC demo programs added
61    
62    ----------------------------------------------------------------------
63    Name: Matthias Blume
64    Date: 2000/08/31 22:15:00 JST
65    Tag: blume-20001017-errmsg
66    Description:
67    
68    More error message grief: Where there used to be no messages, there
69    now were some that had bogus error regions.  Fixed.
70    
71    ----------------------------------------------------------------------
72    Name: Matthias Blume
73    Date: 2000/08/31 17:30:00 JST
74    Tag: blume-20001017-v110p29p1
75    Description:
76    
77    I made a version 110.29.1 with new bootfiles.
78    
79    Changes:  Modified pickler/unpickler for faster and leaner unpickling.
80              CM documentation changes and a small bugfix in CM's error reporting.
81    
82    ----------------------------------------------------------------------
83    Name: Lal George
84    Date: 2000/09/27 14:42:35 EDT
85    Tag: george-20000927-nodestatus
86    Description:
87    
88    Changed the type of the nodestatus, so that:
89    
90            SPILLED(~1)             is now SPILLED
91            SPILLED(m) where m>=0   is now MEMREG(m)
92            SPILLED(s) where s<~1   is now SPILL_LOC(~s)
93    
94    ----------------------------------------------------------------------
95    Name: Matthias Blume
96    Date: 2000/09/07 14:45:00 JST
97    Tag: blume-20000907-cmerrmsg
98    Description:
99    
100    Small tweak to CM to avoid getting ML syntax error messages twice.
101    
102    ----------------------------------------------------------------------
103    Name: Matthias Blume
104    Date: 2000/08/31 18:00:00 JST
105    Tag: blume-20000831-cvsbootfiles
106    Description:
107    
108    New URL for boot files (because the 110.29 files on the BL server do
109    now work correctly with my updated install scripts for yacc and lex).
110    
111    ----------------------------------------------------------------------
112    Name: Matthias Blume
113    Date: 2000/08/08 12:33:00 JST
114    Tag: blume-20000808-manual
115    Description:
116    
117    Tiny update to CM manual.
118    
119    ----------------------------------------------------------------------
120    Name: Allen Leung
121    Date: 2000/08/7 19:31:00
122    Tag: leunga-20000807-a-whole-bunch-of-stuff
123    
124      Moby, C--, SSA, x86, machine descriptions etc.  Should only affect C--
125    and Mobdy.
126    
127    1.  x86
128    
129       a.  Fixes to peephole module by John and Dan.
130       b.  Assembly fix to SETcc by Allen.
131       c.  Fix to c-call by John.
132       d.  Fix to spilling by John.  (This one deals with the missing FSTPT case)
133       e.  Instruction selection optimization to SETcc as suggested by John.
134    
135           For example,
136    
137            MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
138    
139           should generate:
140    
141            MOVL a, x
142            SUBL b, x
143            SHRL 31, x
144    
145    2.  IR stuff
146    
147         A bunch of new DJ-graph related algorithms added.  These
148         speed up SSA construction.
149    
150    3.  SSA + Scheduling
151    
152         Added code for SSA and scheduling to the repository
153    
154    ----------------------------------------------------------------------
155    Name: Lal George
156    Date: 2000/07/27 11:53:14 EDT
157    
158    Tag: lal-20000727-linux-ppc
159    Description:
160    
161     Made changes to support Linux PPC.
162     p.s. I have confirmation that the 110.29 boot files work fine.
163    
164    ----------------------------------------------------------------------
165    Name: Matthias Blume
166    Date: 2000/07/27 17:40:00 JST
167    Tag: blume-20000727-scripts
168    Description:
169    
170    !!!! WARNING !!!!
171    You must recompile the runtime system!
172    !!!! WARNING !!!!
173    
174    This is basically another round of script-enhancements:
175    
176    1. sml, ml-build, and ml-makedepend accept options -D and -U to define
177       and undefine CM preprocessor symbols.
178    
179    2. ml-build avoids generating a new heap image if it finds that the
180       existing one is still ok.  (The condition is that no ML file had to
181       be recompiled and all ML files are found to be older that the heap
182       file.)
183    
184       To make this work smoothly, I also hacked the runtime system as
185       well as SMLofNJ.SysInfo to get access to the heap image suffix
186       (.sparc-solaris, ...) that is currently being used.
187    
188       Moreover, the signature of CM.mk_standalone has changed.  See the
189       CM manual.
190    
191    3. ml-makedepend accepts additional options -n, -a, and -o.  (See the
192       CM manual for details.)
193    
194    4. More CM manual updates:
195        - all of the above has been documented.
196        - there is now a section describing the (CM-related) command line
197          arguments that are accepted by the "sml" command
198    
199    ----------------------------------------------------------------------
200    Name: Matthias Blume
201    Date: 2000/07/25 16:20:00 JST
202    Tag: blume-20000725-makedepend
203    Description:
204    
205    Added a script called ml-makedepend.  This can be used in makefiles
206    for Unix' make in a way very similar to the "makedepend" command for
207    C.
208    
209    The script internally uses function CM.sources.
210    
211    Synopsis:
212    
213        ml-makedepend [-f makefile] cmfile targetname
214    
215    The default for the makefile is "makefile" (or "Makefile" should
216    "makefile" not exist).
217    
218    ml-makedepend adds a cmfile/targetname-specific section to this
219    makefile (after removing the previous version of this section).  The
220    section contains a single dependency specification with targetname on
221    the LHS (targetname is an arbitrary name), and a list of files derived
222    from the cmfile on the RHS.  Some of the files on the RHS are
223    ARCH/OPSYS-specific.  Therefore, ml-makedepend inserts references to
224    "make" variables $(ARCH) and $(OPSYS) in place of the corresponding
225    path names.  The makefile writer is responsible for making sure that
226    these variables have correct at the time "make" is invoked.
227    
228    ----------------------------------------------------------------------
229    Name: Matthias Blume
230    Date: 2000/07/22 23:30:00 JST
231    Tag: blume-20000722-urlupdate
232    Description:
233    
234    Changed BOOT and config/srcarchiveurl to point to BL server:
235    
236        ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
237    
238    ----------------------------------------------------------------------
239    Name: Matthias Blume
240    Date: 2000/07/18 18:00:00 JST
241    Tag: blume-20000718-Version_110_29
242    Description:
243    
244    1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
245    
246    2. Updated config/version to 110.29
247    
248    3. Updated config/srcarchiveurl
249    
250    3. New boot files!
251       ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
252    
253    ----------------------------------------------------------------------
254    Name: Matthias Blume
255    Date: 2000/07/11 13:58:00 JST
256    Tag: blume-20000711-doctypo
257    Description:
258    
259    Fixed a few typos in CM manual.
260    
261    ----------------------------------------------------------------------
262    Name: Allen Leung
263    Date: 2000/06/15 00:38:00
264    Tag: leunga-20000704-sparc-x86
265    
266    1. x86 peephole improvement sp += k; sp -= k => nop  [from John]
267    2. fix to x86 RET bug [found by Dan Grossman]
268    3. sparc assembly bug fix for ticc instructions [found by Fermin]
269    
270       Affects c-- and moby only
271    
272    ----------------------------------------------------------------------
273    Name: Matthias Blume
274    Date: 2000/07/04 15:26:00
275    Tag: blume-20000704-trigger
276    Description:
277    
278    1. Improvements to CM manual.
279    2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
280       of getting a back-trace.  The function, when called, raises an
281       internal exception which explicitly carries the full back-trace history,
282       so it is unaffected by any intervening handle-raise pairs ("trivial"
283       or not).  The interactive loop will print that history once it arrives
284       at top level.
285       Short of having all exceptions implicitly carry the full history, the
286       recommended way of using this facility is:
287         - compile your program with instrumentation "on"
288         - run it, when it raises an exception, look at the history
289         - if the history is "cut off" because of some handler, go and modify
290           your program so that it explicitly calls BTrace.trigger
291         - recompile (still instrumented), and rerun; look at the full history
292    
293    ----------------------------------------------------------------------
294    Name: Matthias Blume
295    Date: 2000/07/03 15:36:00 JST
296    Tag: blume-20000702-manual
297    Description:
298    
299    Small corrections and updates to CM manual.
300    
301    ----------------------------------------------------------------------
302    Name: Matthias Blume
303    Date: 2000/06/29 16:04:00 JST
304    Tag: blume-20000629-yacctool
305    Description:
306    
307    Changes:
308    
309    1. Class "mlyacc" now takes separate arguments to pass options to
310       generated .sml- and .sig-files independently.
311    2. Corresponding CM manual updates.
312    3. BTrace module now also reports call sites.  (However, for loop clusters
313       it only shows from where the cluster was entered.)  There are associated
314       modifications to core.sml, internals.{sig,sml}, btrace.sml, and btimp.sml.
315    
316    ----------------------------------------------------------------------
317    Name: Matthias Blume
318    Date: 2000/06/27 16:51:00 JST
319    Tag: blume-20000627-noweb
320    Description:
321    
322    Changes:
323    
324     1. Implemented "subdir" and "witness" options for noweb tool.
325        This caused some slight internal changes in CM's tool implementation.
326     2. Fixed bug in "tool plugin" mechanism.  This is essentially cleaning
327        some remaining issues from earlier path anchor changes.
328     3. Updated CM manual accordingly.
329    
330     4. Changed implementation of back-tracing so that I now consider it
331        ready for prime-time.
332    
333        In particular, you don't have to explicitly trigger the back-trace
334        anymore.  Instead, if you are running BTrace-instrumented code and
335        there is an uncaught exception (regardless of whether or not it was
336        raised in instrumented code), the top-level evalloop will print
337        the back-trace.
338    
339        Features:
340    
341          - Instrumented and uninstrumented code work together seemlessly.
342            (Of course, uninstrumented code is never mentioned in actual
343             back-traces.)
344    
345          - Asymptotic time- and space-complexity of instrumented code is
346            equal to that of uninstrumented code.  (This means that
347            tail-recursion is preserved by the instrumentation phase.)
348    
349          - Modules whose code has been instrumented in different sessions
350            work together without problem.
351    
352          - There is no penalty whatsoever on uninstrumented code.
353    
354          - There is no penalty on "raise" expressions, even in
355            instrumented code.
356    
357        A potential bug (or perhaps it is a feature, too):
358    
359          A back-trace reaches no further than the outermost instrumented
360          non-trivial "raise".  Here, a "trivial" raise is one that is the
361          sole RHS of a "handle" rule.  Thus, back-traces reach trough
362    
363               <exp> handle e => raise e
364    
365          and even
366    
367               <exp> handle Foo => raise Bar
368    
369          and, of course, through
370    
371               <exp> handle Foo => ...
372    
373         if the exception was not Foo.
374    
375         Back-traces always reach right through any un-instrumented code
376         including any of its "handle" expressions, trivial or not.
377    
378       To try this out, do the following:
379    
380         - Erase all existing binfiles for your program.
381           (You may keep binfiles for those modules where you think you
382            definitely don't need back-tracing.)
383         - Turn on back-trace instrumentation:
384              SMLofNJ.Internals.BTrace.mode (SOME true);
385         - Recompile your program.  (I.e., run "CM.make" or "use".)
386         - You may now turn instrumentation off again (if you want):
387              SMLofNJ.Internals.BTrace.mode (SOME false);
388         - Run your program as usual.  If it raises an exception that
389           reaches the interactive toplevel, then a back-trace will
390           automatically be printed.  After that, the toplevel loop
391           will print the exception history as usual.
392    
393    ----------------------------------------------------------------------
394    Name: Matthias Blume
395    Date: 2000/06/26 09:56:46 JST
396    Tag: blume-20000626-setup
397    Description:
398    
399    CM: - setup-parameter to "sml" added; this can be used to run arbitrary
400          ML code before and after compiling a file (e.g., to set compiler
401          flags)
402    
403    Compiler: - improved btrace API (in core.sml, internals.{sig,sml})
404              - associated changes to btrace.sml (BTrace instrumentation pass)
405              - cleaner implementation of btimp.sml (BTrace tracing and report
406                module)
407    
408    CM manual: * new path encoding documented
409               * description of setup-parameter to "sml" added
410    
411    The biggest user-visible change to back-tracing is that it is no
412    longer necessary to compile all traced modules within the same
413    session.  (This was a real limitation.)
414    
415    ----------------------------------------------------------------------
416    Name: Matthias Blume
417    Date: 2000/06/24 12:40:00 JST
418    Tag: blume-20000624-startup
419    Description:
420    
421    Fixes startup slowdown problem.  (I was calling SrcPath.sync a _tad_
422    bit too often -- to put it mildly. :)
423    
424    ----------------------------------------------------------------------
425    Name: Matthias Blume
426    Date: 2000/06/23 18:20:00 JST
427    Tag: blume-20000623-btrace
428    Description:
429    
430    This updates adds a backtrace facility to aid programmers in debugging
431    their programs.  This involves the following changes:
432    
433    1. Module system/smlnj/init/core.sml (structure _Core) now has hooks for
434       keeping track of the current call stack.  When programs are compiled
435       in a special mode, the compiler will insert calls to these hooks
436       into the user program.
437       "Hook" means that it is possible for different implementations of
438       back-tracing to register themselves (at different times).
439    
440    2. compiler/MiscUtil/profile/btrace.sml implements the annotation phase
441       as an Absyn.dec->Absyn.dec rewrite.  Normally this phase is turned off.
442       It can be turned on using this call:
443         SMLofNJ.Internals.BTrace.mode (SOME true);
444       Turning it off again:
445         SMLofNJ.Internals.BTrace.mode (SOME false);
446       Querying the current status:
447         SMLofNJ.Internals.BTrace.mode NONE;
448       Annotated programs are about twice as big as normal ones, and they
449       run a factor of 2 to 4 slower with a dummy back-trace plugin (one
450       where all hooks do nothing).  The slowdown with a plugin that is
451       actually useful (such as the one supplied by default) is even greater,
452       but in the case of the default plugin it is still only an constant
453       factor (amortized).
454    
455    3. system/Basis/Implementation/NJ/internals.{sig,sml} have been augmented
456       with a sub-structure BTrace for controlling back-tracing.  In particular,
457       the above-mentioned function "mode" controls whether the annotation
458       phase is invoked by the compiler.  Another important function is
459       "trigger": when called it aborts the current execution and causes
460       the top-level loop to print a full back-trace.
461    
462    4. compiler/MiscUtil/profile/btimp.sml is the current default plugin
463       for back-tracing.  It keeps track of the dynamic call stack and in
464       addition to that it keeps a partial history at each "level" of that
465       stack.  For example, if a tail-calls b, b tail-calls c, and c tail-calls
466       d and b (at separate times, dynamically), then the report will show:
467    
468       GOTO   d
469             /c
470       GOTO  \b
471       CALL   a
472    
473       This shows that there was an initial non-tail call of a, then a
474       tail-call to b or c, looping behavior in a cluster of functions that
475       consist of b and c, and then a goto from that cluster (i.e., either from
476       b or from c) to d.
477    
478       Note that (depending on the user program) the amount of information
479       that the back-trace module has to keep track of at each level is bounded
480       by a constant.  Thus, the whole implementation has the same asymptotical
481       complexity as the original program (both in space and in time).
482    
483    5. compiler/TopLevel/interact/evalloop.sml has been modified to
484       handle the special exception SMLofNJ.Internals.BTrace.BTrace
485       which is raised by the "trigger" function mentioned above.
486    
487    Notes on usage:
488    
489    - Annotated code works well together with unannotated code:
490    Unannotated calls simply do not show up at all in the backtrace.
491    
492    - It is not a good idea to let modules that were annotated during
493    different sessions run at the same time.  This is because the compiler
494    chooses small integers to identify individual functions, and there
495    will be clashes if different modules were compiled in separate sessions.
496    (Nothing will crash, and you will even be told about the clashes, but
497    back-trace information will in general not be useful.)
498    
499    - Back-tracing can be confused by callcc and capture.
500    
501    - The only way of getting a back-trace right now is to explicitly
502    invoke the "trigger" function from your user program.  Eventually, we
503    should make every exception carry back-trace information (if
504    available).  But since this creates more overhead at "raise"-time
505    (similar to the current exnHistory overhead), I have not yet
506    implemented this.  (The implementation will be rather easy.)  With
507    exceptions carrying back-trace information, this facility will be even
508    more useful because users don't need to modify their programs...
509    
510    - While it is possible to compile the compiler with back-trace
511    annotations turned on (I did it to get some confidence in
512    correctness), you must make absolutely sure that core.sml and
513    btimp.sml are compiled WITHOUT annotation!  (core.sml cannot actually
514    be compiled with annotation because there is no core access yet, but
515    if you compile btimp.sml with annotation, then the system will go into
516    an infinite recursion and crash.)
517    Since CM currently does not know about BTrace, the only way to turn
518    annotations on and off for different modules of the compiler is to
519    interrupt CMB.make, change the settings, and re-invoke it.  Of course,
520    this is awkward and clumsy.
521    
522    Sample sessions:
523    
524    Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
525    - SMLofNJ.Internals.BTrace.mode (SOME true);
526    [autoloading]
527    [autoloading done]
528    val it = false : bool
529    - structure X = struct
530    -     fun main n = let
531    -         fun a (x, 0) = d x
532    -           | a (x, n) = b (x, n - 1)
533    -         and b (x, n) = c (x, n)
534    -         and c (x, n) = a (x, n)
535    -         and d x = e (x, 3)
536    -         and e (x, 0) = f x
537    -           | e (x, n) = e (x, n - 1)
538    -         and f 0 = SMLofNJ.Internals.BTrace.trigger ()
539    -           | f n = n * g (n - 1)
540    -         and g n = a (n, 3)
541    -     in
542    -         f n
543    -     end
544    - end;
545    structure X : sig val main : int -> int end
546    - X.main 3;
547    *** BACK-TRACE ***
548    GOTO   stdIn:4.2-13.20: X.main[2].f
549    GOTO-( stdIn:4.2-13.20: X.main[2].e
550    GOTO   stdIn:4.2-13.20: X.main[2].d
551         / stdIn:4.2-13.20: X.main[2].a
552         | stdIn:4.2-13.20: X.main[2].b
553    GOTO-\ stdIn:4.2-13.20: X.main[2].c
554    CALL   stdIn:4.2-13.20: X.main[2].g
555    GOTO   stdIn:4.2-13.20: X.main[2].f
556    GOTO-( stdIn:4.2-13.20: X.main[2].e
557    GOTO   stdIn:4.2-13.20: X.main[2].d
558         / stdIn:4.2-13.20: X.main[2].a
559         | stdIn:4.2-13.20: X.main[2].b
560    GOTO-\ stdIn:4.2-13.20: X.main[2].c
561    CALL   stdIn:4.2-13.20: X.main[2].g
562    GOTO   stdIn:4.2-13.20: X.main[2].f
563    GOTO-( stdIn:4.2-13.20: X.main[2].e
564    GOTO   stdIn:4.2-13.20: X.main[2].d
565         / stdIn:4.2-13.20: X.main[2].a
566         | stdIn:4.2-13.20: X.main[2].b
567    GOTO-\ stdIn:4.2-13.20: X.main[2].c
568    CALL   stdIn:4.2-13.20: X.main[2].g
569    GOTO   stdIn:4.2-13.20: X.main[2].f
570    CALL   stdIn:2.15-17.4: X.main[2]
571    -
572    
573    (Note that because of a FLINt bug the above code currently does not
574    compile without BTrace turned on.)
575    
576    Here is another example, using my modified Tiger compiler:
577    
578    Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
579    - SMLofNJ.Internals.BTrace.mode (SOME true);
580    [autoloading]
581    [autoloading done]
582    val it = false : bool
583    - CM.make "sources.cm";
584    [autoloading]
585    ...
586    [autoloading done]
587    [scanning sources.cm]
588    [parsing (sources.cm):parse.sml]
589    [creating directory CM/SKEL ...]
590    [parsing (sources.cm):tiger.lex.sml]
591    ...
592    [wrote CM/sparc-unix/semant.sml]
593    [compiling (sources.cm):main.sml]
594    [wrote CM/sparc-unix/main.sml]
595    [New bindings added.]
596    val it = true : bool
597    - Main.compile ("../testcases/merge.tig", "foo.out");
598    *** BACK-TRACE ***
599    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trvar
600    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
601    CALL   lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
602    GOTO   lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
603    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
604    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
605    CALL   lib/semant.sml:488.3-505.6: SemantFun[2].transDec.trdec[2].transBody[2]
606         / lib/semant.sml:411.65-543.8: SemantFun[2].transDec
607    CALL-\ lib/semant.sml:413.2-540.9: SemantFun[2].transDec.trdec[2]
608    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
609    CALL   lib/semant.sml:8.52-558.4: SemantFun[2].transProg[2]
610    CALL   main.sml:1.18-118.4: Main.compile[2]
611    -
612    
613    ----------------------------------------------------------------------
614    Name: Matthias Blumen
615    Date: 2000/06/21 18:00:00 JST
616    Tag: blume-20000621-manual
617    Description:
618    
619    CM manual update: Path environments documented.
620    
621    ----------------------------------------------------------------------
622    Name: Matthias Blume
623    Date: 2000/06/19 13:40:00
624    Tag: blume-20000619-manual
625    Description:
626    
627    CM manual and system/README update.  This only covers the fact that
628    there are no more implicit anchors.  (Path environments and the "bind"
629    option to "cm" have yet to be documented.)
630    
631    ----------------------------------------------------------------------
632    Name: Matthias Blume
633    Date: 2000/06/19 11:05:00 JST
634    Tag: blume-20000619-chdir-bugfix
635    Description:
636    
637    Fixed a bug in new SrcPath module that sometimes led to a bad chDir call.
638    
639    ----------------------------------------------------------------------
640    Name: Matthias Blume
641    Date: 2000/06/18 22:00:10 JST
642    Tag: blume-20000618-implicit-anchors-really-gone
643    Description:
644    
645    I updates the previous HISTORY entry where I forgot to mention that
646    implicit anchors are no longer with us.
647    
648    The current update also gets rid of the (now useless) controller
649    CM.Control.implicit_anchors.
650    
651    ----------------------------------------------------------------------
652    Name: Matthias Blume
653    Date: 2000/06/16 17:30:00 JST
654    Tag: blume-20000616-anchorenv
655    Description:
656    
657    This patch implements the long anticipated (just kidding :) "anchor
658    environment" mechanism.  In the course of doing this, I also
659    re-implemented CM's internal "SrcPath" module from scratch.  The new
660    one should be more robust in certain boundary cases.  In any case, it
661    is a lot cleaner than its predecessor (IMHO).
662    
663    This time, although there is yet another boot file format change, I
664    kept the unpickler backward-compatible.  As a result, no new bootfiles
665    are necessary and bootstrapping is straightforward.  (You cannot read
666    new bootfiles into an old system, but the other way around is no
667    problem.)
668    
669    Visible changes:
670    
671    ** 0. Implicit path anchors (without the leading $-symbol) are no
672    longer recognized at all. This means that such path names are not
673    illegal either.  For example, the name basis.cm simply refers to a
674    local file called "basis.cm" (i.e, the name is an ordinary path
675    relative to .cm-files directory).  Or, to put it differently, only
676    names that start with $ are anchored paths.
677    
678    ** 1. The $<singlearc> abbreviation for $/<singlearc> has finally
679    vanished.
680    
681    John (Reppy) had critizised this as soon as I originally proposed and
682    implemented it, but at that time I did not really deeply believe
683    him. :) Now I came full-circle because I need the $<singlearc> syntax
684    in another place where it cannot be seen as an abbreviation for
685    $/<singlearc>.  To avoid the confusion, $<singlearc> now means what it
686    seems to mean (i.e., it "expands" into the corresponding anchor
687    value).
688    
689    However, when paths are used as members in CM description files, it
690    continues to be true that there must be at least another arc after the
691    anchor.  This is now enforced separately during semantic analysis
692    (i.e., from a lexical/syntactical point of view, the notation is ok.)
693    
694    ** 2. The "cm" class now accepts an option "bind".  The option's value
695    is a sub-option list of precisely two items -- one labeled "anchor"
696    and the other one labeled "value".  As you might expect, "anchor" is
697    used to specify an anchor name to be bound, and "value" specifies what
698    the anchor is being bound to.
699    
700    The value must be a directory name and can be given in either standard
701    syntax (including the possibility that it is itself an anchored path)
702    or native syntax.
703    
704    Examples:
705    
706       foo.cm (bind:(anchor:bar value:$mystuff/bar))
707       lib.cm (bind:(anchor:a value:"H:\\x\\y\\z"))  (* only works under windows *)
708    
709    and so on.
710    
711    The meaning of this is that the .cm-file will be processed with an
712    augmented anchor environment where the given anchor(s) is/are bound to
713    the given values(s).
714    
715    The rationale for having this feature is this: Suppose you are trying
716    to use two different (already stable) libraries a.cm and b.cm (that
717    you perhaps didn't write yourself).  Further, suppose each of these
718    two libraries internally uses its own auxiliary library $aux/lib.cm.
719    Normally you would now have a problem because the anchor "lib" can not
720    be bound to more than one value globally.  Therefore, the project that
721    uses both a.cm and b.cm must locally redirect the anchor to some other
722    place:
723    
724       a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
725       b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
726    
727    This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
728    /usr/lib/smlnj/b-stuff/aux.cm, respectively.
729    
730    Hard-wiring path names is a bit inflexible (and CM will verbosely warn
731    you when you do so at the time of CM.stabilize).  Therefore, you can
732    also use an anchored path as the value:
733    
734      a.cm (bind:(anchor:lib value:$a-lib))
735      b.cm (bind:(anchor:lib value:$b-lib))
736    
737    Now you can globally configure (using the usual CM.Anchor.anchor or
738    pathconfig machinery) bindings for "a-lib" and "b-lib".  Since "lib"
739    itself is always locally bound, setting it globally is no longer
740    meaningful or necessary (but it does not hurt either).  In fact, "lib"
741    can still be used as a global anchor for separate purposes.  As a
742    matter of fact, one can locally define "lib" in terms of a global
743    "lib":
744    
745      a.cm (bind:(anchor:lib value:$lib/a))
746      b.cm (bind:(anchor:lib value:$lib/b))
747    
748    ** 3: The encoding of path names has changed.  This affects the way
749    path names are shown in CM's progress report and also the internal
750    protocol encoding used for parallel make.
751    
752    The encoding now uses one or more ':'-separated segments.  Each
753    segments corresponds to a file that has been specified relative to the
754    file given by its preceding segment.  The first segment is either
755    relative to the CWD, absolute, or anchored.  Each segment itself is
756    basically a Unix pathname; all segments but the first are relative.
757    
758    Example:
759    
760       $foo/bar/baz.cm:a/b/c.sml
761    
762    This path denotes the file bar/a/b/c.sml relative to the directory
763    denoted by anchor "foo".  Notice that the encoding also includes
764    baz.cm which is the .cm-file that listed a/b/c.sml.  As usual, such
765    paths are resolved relative to the .cm-files directory, so baz.cm must
766    be ignored to get the "real" pathname.
767    
768    To make this fact more obvious, CM puts the names of such "virtual
769    arcs" into parentheses when they appear in progress reports. (No
770    parentheses will appear in the internal protocol encoding.)  Thus,
771    what you really see is:
772    
773      $foo/bar/(baz.cm):a/b/c.sml
774    
775    I find this notation to be much more informative than before.
776    
777    Another new feature of the encoding is that special characters
778    including parentheses, colons, (back)slashes, and white space are
779    written as \ddd (where ddd is the decimal encoding of the character).
780    
781    *** The CM manual still needs to be updated.
782    
783    ----------------------------------------------------------------------
784    Name: Allen Leung
785    Date: 2000/06/15 00:38:00
786    Tag: leunga-20000615-x86-peephole
787    
788    x86 Peephole fix by Fermin.  Affects c-- and moby only.
789    
790    ----------------------------------------------------------------------
791    Name: Matthias Blume
792    Date: 2000/06/12 11:40:00
793    Tag: blume-20000612-parmakefix
794    Description:
795    
796    More cleanup after changing the file naming scheme: This time I
797    repaired the parallel make mechanism for CMB.make which I broke earlier.
798    
799    ----------------------------------------------------------------------
800    Name: Allen Leung
801    Date: 2000/06/09 01:25:00
802    Tag: leunga-20000609-various
803    
804    None of these things should affect normal SML/NJ operations
805    
806    1. Peephole improvements provided by Fermin (c--)
807    2. New annotation DEFUSE for adding extra dependence (moby)
808    3. New X86 LOCK instructions (moby)
809    4. New machine description language for reservation tables (scheduling)
810    5. Fixes to various optimization/analysis modules (branch chaining, dominator
811       trees etc.)
812    6. I've changed the CM files so that they can work with versions
813       110.0.6, 110.25 and 110.28
814    
815    ----------------------------------------------------------------------
816    Name: Matthias Blume
817    Date: 2000/06/09 12:40:00
818    Tag: blume-20000609-log
819    Description:
820    
821    - Removed all(?) remaining RCS Log entries from sources.
822    
823    - Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
824      anchored paths).
825    
826    ----------------------------------------------------------------------
827    Name: Matthias Blume
828    Date: 2000/06/07 17:00:00 JST
829    Tag: blume-20000607-no-implicit-anchors
830    Description:
831    
832    1. This update changes the default setting for
833    CM.Control.implicit_anchors from true to false.  This means that
834    implicit anchors are no longer permitted by default.  I also tried to
835    make sure that nothing else still relies on implicit anchors.
836    (This is the next step on the schedule towards a CM that does not even
837    have the notion of implicit anchors anymore.)
838    
839    2. More CM manual updates.
840    
841    3. I managed to track down and fix the pickling bug I mentioned last
842    time.  Because of the previously existing workaround, this entails no
843    immediate practical changes.
844    
845    ----------------------------------------------------------------------
846    Name: Matthias Blume
847    Date: 2000/06/06 11:15:00 JST
848    Tag: blume-20000606-lazierpickle
849    Description:
850    
851    !!!! NEW BOOT FILES !!!!
852    
853    * The main purpose of this update is to make library pickles lazier in
854    order to reduce the initial space penalty for autoloading a library.
855    As a result, it is now possible to have $smlnj/compiler.cm
856    pre-registered.  This should take care of the many complaints or
857    inquiries about missing structure Compiler.  This required changes to
858    CM's internal data structures and small tweaks to some algorithms.
859    
860    As a neat additional effect, it is no longer necessary (for the sake
861    of lean heap image files) to distinguish between a "minimal" CM and a
862    "full" CM.  Now, there is only one CM (i.e., the "full" version:
863    $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
864    interactive top level. ($smlnj/cm/minimal.cm is gone.)
865    
866    To make the life of compiler-hackers easier, "makeml" now also
867    pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm).  In other
868    words, after you bootstrap a new sml for the first time, you will not
869    have to autoload $smlnj/cmb.cm again afterwards.  (The first time
870    around you will still have to do it, though.)
871    
872    * A second change consists of major updates to the CM manual.  There
873    are now several appendices with summary information and also a full
874    specification of the CM description file syntax.
875    
876    * In directory src/system I added the script "allcross".  This script
877    invokes sml and cross-compiles the compiler for all supported
878    architectures.  (Useful when providing a new set of boot files.)
879    
880    * There seems to be a latent bug in my "lazy pickles" mechanism.  I
881    added a small tweak to pickle-util.sml to work around this problem,
882    but it is not a proper fix yet.  I will investigate further.  (The
883    effect of the bug was an inflation of library pickle size.)
884    
885    * Version number increased to 110.28.1 (to avoid compatibility problems).
886    
887    ----------------------------------------------------------------------
888    Name: Allen Leung
889    Date: 2000/05/25 17:28 EDT
890    Tag: leunga-20000525-ra
891    Description:
892    
893      Fixed a bug in freezing phase of the register allocator.
894    
895    ----------------------------------------------------------------------
896    Name: Allen Leung
897    Date: 2000/05/15 22:53 EDT
898    Tag: leunga-20000515-alpha-x86-ra
899    Description:
900    
901      1. Alpha
902    
903          Slight cleanup.  Removed the instruction SGNXL
904    
905      2. X86
906    
907          Added the following instructions to the instruction set:
908    
909            ROLx, RORx,
910            BTx, BTSx, BTLx, BTRx,
911            XCHGx, and variants with the LOCK prefix
912    
913      3. Register Allocation
914    
915          The module ra-rewrite-with-renaming has been improved.
916    
917      These have no effect on SML/NJ.
918    
919    ----------------------------------------------------------------------
920    Name: Matthias Blume
921    Date: 2000/05/15 16:20:00 JST
922    Tag: blume-20000515-lightrebuild
923    Description:
924    
925    1. I added an alternative to "-rebuild" to "makeml".  The difference is
926       that prior to calling CMB.make' the CM-variable "LIGHT" will be
927       defined.  In effect, the command will not build any cross-compiler
928       backends and therefore finish more quickly.
929    
930       The "fixpt" script also takes a "-light" switch to be able to use
931       this new facility while compiling for a fixpoint.
932    
933    2. I replaced all mentions of anchored paths in group owner specifications
934       with simple relative paths (usually starting with "..").
935       The rationale is that a library's internal workings should not be
936       compromised by the lack of some anchor.  (An anchor is necessary
937       for someone who wants to refer to the library by an anchored path,
938       but it should not be necessary to build the same library in the first
939       place.)
940    
941    3. I changed the way CM's tool mechanism determines the shell command
942       string used for things like ml-yacc etc. so that it does not break
943       when CM.Control.implicit_anchors is turned off.
944    
945    ----------------------------------------------------------------------
946    Name: Matthias Blume
947    Date: 2000/05/12 18:20:00 JST
948    Tag: blume-20000512-ml-build
949    Description:
950    
951    Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
952    getting installed properly (by config/install.sh).
953    
954    ----------------------------------------------------------------------
955    Name: Matthias Blume
956    Date: 2000/05/12 17:30:00 JST
957    Tag: blume-20000512-anchors
958    Description:
959    
960    !!! NEW BOOT FILES !!!
961    
962    This change is in preparation of fading out support for "implicitly
963    anchored path names".  I went through all sources and used the
964    explicit (and relatively new) $-notation.  See system/README and the
965    CM manual for more info on this.
966    
967    I also modified the anchoring scheme for some things such as "smlnj",
968    "MLRISC", "cm", etc. to take advantage of the fact that explicit
969    anchors are more expressive: anchor name and first arc do not have to
970    coincide.  This entails the following user-visible change:
971    
972    You have to write $smlnj/foo/bar instead of smlnj/foo/bar.  In
973    particular, when you fire up sml with a command-line argument, say,
974    e.g.:
975    
976       sml '$smlnj/cmb.cm'
977    
978    At the ML toplevel prompt:
979    
980       CM.autoload "$smlnj/cmb.cm";
981    
982    There is also a new controller in CM.Control that can be used to turn
983    off all remaining support for implicit anchors by saying:
984    
985        CM.autoload "$smlnj/
986        #set CM.Control.implicit_anchors false;
987    
988    This causes CM to reject implicitly anchored paths.  This is (for the
989    time being) less permissive than the "final" version where there will
990    be no more such implicit anchors and relative paths will be just that:
991    relative.
992    
993    The next step (version after next version?) will be to make the
994    default for CM.Control.implicit_anchors false.  After the dust has
995    settled, I can then produce the "final" version of this...
996    
997    Note: Since bootstrapping is a bit tricky, I provided new boot files.
998    
999    ----------------------------------------------------------------------
1000    Name: Matthias Blume
1001    Date: 2000/05/11 16:30:00 JST
1002    Tag: blume-20000511-sources
1003    Description:
1004    
1005    The main change is that I added function CM.sources as a generalized
1006    version of the earlier CM.makedepend.  This entails the following
1007    additional changes:
1008    
1009      - CM.makedepend has been dropped.
1010    
1011      - CM manual has been updated.
1012    
1013      - TOOLS signature and API have been changed.
1014    
1015    ----------------------------------------------------------------------
1016    Name: Allen Leung
1017    Date: 2000/05/10 21:17 EDT
1018    Tag: leunga-20000510-moby-c--ssa
1019    Description:
1020    
1021      Various bug fixes and new features for C--, Moby and MLRISC optimizations.
1022    None of these affect SML/NJ.
1023    
1024    1. Register Allocation
1025    
1026        a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
1027           This module tries to remove local (i.e. basic block level) redundancies
1028           during spilling.
1029    
1030        b. A new framework for performing region based register allocation.
1031           Not yet entirely functional.
1032    
1033    2. X86
1034    
1035       a. DefUse for POP was missing the stack pointer [found by Lal]
1036       b. Reload for CALL was incorrect in X86Spill [found by John]
1037       c. Various fixes in X86Spill so that it can be used correctly for
1038          the new spilling module.
1039    
1040    3. SSA/IR
1041    
1042       a. New module ir/dj-dataflow.sml implements elimination based
1043          data flow analysis.
1044    
1045    4. MLRiscGen
1046    
1047       a. Fix for gc type annotation
1048    
1049    5. MDGen
1050    
1051       Various fixes for machine description -> ml code translation.  For ssa
1052       only.
1053    
1054    ----------------------------------------------------------------------
1055    Name: Allen Leung
1056    Date: 2000/05/08 22:17 EDT
1057    Tag: leunga-20000508-labexp
1058    Description:
1059    
1060      Fermin has found a few assembly problems with constant expressions
1061      generated in LabelExp.  Mostly, the problems involve extra parentheses,
1062      which choke on dumb assemblers.  This is his fix.
1063    
1064    ----------------------------------------------------------------------
1065    Name: Dave MacQueen
1066    Date: 2000/04/09 14:00 EDT
1067    Tag: dbm-20000502-Version_110_28
1068    Description:
1069    
1070    1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
1071    
1072    2. Updated config/version to 110.28
1073    
1074    3. Updated config/srcarchiveurl
1075    
1076    3. New boot files!
1077       ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
1078    
1079    ----------------------------------------------------------------------
1080    Name: Matthias Blume
1081    Date: 2000/05/01 19:05:00 JST
1082    Tag: blume-20000501-noweb
1083    Description:
1084    
1085    A new noweb tool has been added.  The existing system is entirely
1086    unaffected by this, but some CM users have asked for renewed noweb
1087    support.  Everything is documented in the CM manual.
1088    
1089    New (plugin) libraries:
1090    
1091       noweb-tool.cm
1092       nw-ext.cm
1093    
1094    ----------------------------------------------------------------------
1095    Name: Dave MacQueen
1096    Date: 2000/04/30 12:40PM EDT
1097    Tag: dbm-20000430-bug_fixes
1098    Description:
1099    
1100    1. Fix for bug 1498
1101       smlnj/src/system/Basis/Implementation/Unsafe/object.sig
1102       smlnj/src/system/Basis/Implementation/Unsafe/object.sml
1103         added toRealArray function
1104       smlnj/src/compiler/MiscUtil/print/ppobj.sml
1105         added check for tag Obj.RealArray to array printing case in ppObj
1106    
1107    2. Fix for bug 1510
1108       smlnj/src/compiler/Semant/types/typesutil.sml
1109         fixed definition of dummyargs (used by equalTycon) so that
1110         dummy args are distinct types
1111    
1112    ----------------------------------------------------------------------
1113    Name: Matthias Blume
1114    Date: 2000/04/30 01:00:00 JST
1115    Tag: blume-20000430-versions
1116    Description:
1117    
1118    1. CM version numbering added.  This is an implementation of Lal's
1119       proposal for adding version numbers and version checking to .cm
1120       files.  Lal said that his proposal was just that -- a proposal.
1121       For the time being I went ahead and implemented it so that people
1122       can comment on it.  Everything is completely backward-compatible
1123       (except for the stable library format, i.e., new bootfiles!).
1124    
1125       As usual, see the CM manual for details.
1126    
1127    2. An alternative syntax for anchored paths has been implemented.
1128       Dave has recently voiced the same concerns that I had when I did
1129       this, so there should be some support.  My take is that eventually
1130       I will let support for the current syntax (where anchors are
1131       "implicit") fade out in favor of the new, explicit syntax.
1132       In order to be backward-compatible, both old and new syntax are
1133       currently supported.
1134    
1135       Again, see the CM manual for details.
1136    
1137    3. Parallel make is trying to be slightly smarter:  When the master
1138       process finds a "bottleneck", i.e., when there is only one
1139       compilation unit that can be compiled and everybody else is
1140       waiting on it, then it will simply compile it directly instead
1141       of clumsily telling one of the slaves to do it.
1142    
1143    4. Support for "unsharing" added.  This is necessary in order to be
1144       able to have two different versions of the same library running
1145       at the same time (e.g., for trying out a new MLRISC while still
1146       having the old MLRISC linked into the current compiler, etc.)
1147       See the CM manual.
1148    
1149    5. Simple "makedepend" functionality added for generating Makefile
1150       dependency information.  (This is rather crude at the moment.
1151       Expect some changes here in the future.)
1152    
1153    6. ".fun" added as a recognized suffix for ML files. Also documented
1154       explicitly in the manual that the fallback behavior (unknown suffix
1155       -> ML file) is not an official feature!
1156    
1157    7. Small changes to the pickler for stable libraries.
1158    
1159    8. Several internal changes to CM (for cleanup/improvement).
1160    
1161    
1162    !!!! NEW BINFILES !!!!
1163    
1164    ----------------------------------------------------------------------
1165    Name: Matthias Blume
1166    Date: 2000/04/28 17:30:00 JST
1167    Tag: blume-20000428-pathconfig
1168    Description:
1169    
1170    1. I changed config/install.sh to remove duplicate entries from the
1171       lib/pathconfig file at the end.  Moreover, the final version of
1172       lib/pathconfig is sorted alphabetically.  The same (sorting) is done
1173       in src/system/installml.
1174    
1175    2. The config/install.sh script now consistently uses relative
1176       pathnames in lib/pathconfig whenever the anchor is in the lib
1177       directory.  (So far this was true for the libraries that come
1178       pre-compiled and bundled as part of the bootfiles but not for
1179       libraries that are compiled by the script itself.)
1180    
1181    ----------------------------------------------------------------------
1182    Name: Matthias Blume
1183    Date: 2000/04/26 13:10:00 JST
1184    Tag: blume-20000426-fun_suffix
1185    Description:
1186    
1187    Added ".fun" as a recognized file name suffix (for ML code).
1188    
1189    ----------------------------------------------------------------------
1190    Name: Allen Leung
1191    Date: 2000/04/25 17:00:00 EST
1192    Tag: leunga-20000425-alpha-ra
1193    Description:
1194    
1195    1. Alpha
1196    
1197        PSEUDOARITH was missing in AlphaRewrite.  This causes an endless loop
1198    in C--.
1199    
1200    2. RA
1201    
1202       Added a flag "ra-dump-size" to print out the size of the flowgraph
1203       and the interference graph.
1204    
1205    ----------------------------------------------------------------------
1206    Name: Dave MacQueen
1207    Date: 2000/04/25/
1208    Tag: dbm-20000425-mlyacc_doc_examples
1209    Description:
1210      Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
1211      Updated all three examples in src/ml-yacc/examples to run
1212      under 110.* using CM.make.
1213    
1214    ----------------------------------------------------------------------
1215    Name: Allen Leung
1216    Date: 2000/04/20 23:04:00 EST
1217    Tag: leunga-20000420-ssa-c---stuff
1218    Description:
1219    
1220      This update synchronizes my repository with Yale's.  Most of these
1221    changes, however, do not affect SML/NJ at all (the RA is an exception).
1222    
1223    1. Register Allocator
1224    
1225       a. An improvement in the interference graph construction:
1226          Given a copy
1227    
1228                s <- t
1229    
1230          no interference edge between s and t is added for this definition of s.
1231    
1232       b. I've added two new spill heuristic modules that Fermin and I developed
1233          (in the new library RA.cm). These are unused in SML/NJ but maybe
1234          useful for others (Moby?)
1235    
1236    2. X86
1237    
1238       a. Various fixes in the backend provided by Fermin [C--] and Lal.
1239    
1240    3. Alpha
1241    
1242       a. Added the BSR instruction and code generation that goes with it [C--]
1243       b. Other fixes too numerous to recount provided by Fermin [C--]
1244    
1245    4. Regmaps
1246    
1247       a. The regmaps are not initialized with the identity physical bindings
1248          at creation time.  This is unneeded.
1249    
1250    5. MLRISC Optimizations
1251    
1252       a. The DJ-Graph module can now compute the iterated dominance frontiers
1253          intersects with liveness incrementally in linear time! Woohoo!
1254          This is now used in my new SSA construction algorithm.
1255    
1256       b. THe branch reorganization module is now smarter about linear chains of
1257          basic blocks.
1258    
1259    
1260  ----------------------------------------------------------------------  ----------------------------------------------------------------------
1261  Name: Matthias Blume  Name: Matthias Blume
1262  Date: 2000/04/12 13:52:00 JST  Date: 2000/04/12 13:52:00 JST
# Line 129  Line 1375 
1375    
1376  3.  Assembly  3.  Assembly
1377    
1378      When generating assemby, resolve the value of client defined constants,      When generating assembly, resolve the value of client defined constants,
1379      instead of generating symbolic values.  This is controlled by the      instead of generating symbolic values.  This is controlled by the
1380      new flag "asm-resolve-constants", which is default to true.      new flag "asm-resolve-constants", which is default to true.
1381    
# Line 152  Line 1398 
1398    
1399  To this end, I arranged that instead of "structure Core" as "structure  To this end, I arranged that instead of "structure Core" as "structure
1400  _Core" is bound in the pervasive environment.  Core access is done via  _Core" is bound in the pervasive environment.  Core access is done via
1401  _Core (which can never be accidentially rebound because _Core is not a  _Core (which can never be accidentally rebound because _Core is not a
1402  legal surface-syntax symbol).  legal surface-syntax symbol).
1403    
1404  The current solution is much cleaner because the core environment is  The current solution is much cleaner because the core environment is
# Line 162  Line 1408 
1408  with dynamic and symbolic parts of the core environment.  with dynamic and symbolic parts of the core environment.
1409    
1410  Remaining hackery (to bind the "magic" symbol _Core) is localized in the  Remaining hackery (to bind the "magic" symbol _Core) is localized in the
1411  compilation mananger's bootstrap compiler (actually: in the "init group"  compilation manager's bootstrap compiler (actually: in the "init group"
1412  handling).  See the comments in src/system/smlnj/init/init.cmi for  handling).  See the comments in src/system/smlnj/init/init.cmi for
1413  more details.  more details.
1414    
# Line 277  Line 1523 
1523     (specified in the .cm file at each instance where the tool's class is     (specified in the .cm file at each instance where the tool's class is
1524     used).     used).
1525    
1526     This was done to accomodate the new "make" and "shell" tools which     This was done to accommodate the new "make" and "shell" tools which
1527     facilitate fairly seemless hookup to portions of code managed using     facilitate fairly seamless hookup to portions of code managed using
1528     Makefiles or Shell scripts.     Makefiles or Shell scripts.
1529    
1530     There are no classes "shared" or "private" anymore.  Instead, the     There are no classes "shared" or "private" anymore.  Instead, the
# Line 290  Line 1536 
1536    
1537     All existing tools are described in the CM manual.     All existing tools are described in the CM manual.
1538    
1539     - Slightly better error handling.  (CM now surpresses many followup     - Slightly better error handling.  (CM now suppresses many followup
1540     error messages that tended to be more annoying than helpful.)     error messages that tended to be more annoying than helpful.)
1541    
1542  2. Major changes to the compiler's static environment data structures.  2. Major changes to the compiler's static environment data structures.
# Line 424  Line 1670 
1670    
1671       I've changed andl to testl in the floating point test sequence       I've changed andl to testl in the floating point test sequence
1672       whenever appropriate.  The Intel optimization guide states that       whenever appropriate.  The Intel optimization guide states that
1673       testl is perferable to andl.       testl is preferable to andl.
1674    
1675  7. RA (x86 only)  7. RA (x86 only)
1676    
# Line 606  Line 1852 
1852    
1853  1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an  1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
1854  additional argument called "template" which is an optional string that  additional argument called "template" which is an optional string that
1855  specifiel the layout of the tool command line.  See the CM manual for  specifies the layout of the tool command line.  See the CM manual for
1856  explanation.  explanation.
1857    
1858  2. A special-purpose tool can be "regisitered" by simply dropping the  2. A special-purpose tool can be "registered" by simply dropping the
1859  corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same  corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
1860  directory where the .cm file lives that uses this tool.  (The  directory where the .cm file lives that uses this tool.  (The
1861  behavior/misfeature until now was to look for the tool description  behavior/misfeature until now was to look for the tool description
# Line 653  Line 1899 
1899  rebuild.  Having sets of the form <base><k>.{bin,boot}.<arch>-unix for  rebuild.  Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
1900  <k>=1,2,... is normally not a good idea when invoking fixpt.  However,  <k>=1,2,... is normally not a good idea when invoking fixpt.  However,
1901  they might be the result of an earlier partial run of fixpt (which  they might be the result of an earlier partial run of fixpt (which
1902  perhaps got accidentially killed).  In this case, fixpt will quickly  perhaps got accidentally killed).  In this case, fixpt will quickly
1903  move through what exists before continuing where it left off earlier,  move through what exists before continuing where it left off earlier,
1904  and, thus, saves a lot of time.  and, thus, saves a lot of time.
1905    
# Line 703  Line 1949 
1949    it from that remote directory.    it from that remote directory.
1950    This should simplify installation further:  For machines that have    This should simplify installation further:  For machines that have
1951    access to the internet, just fetch <version>-config.tgz, unpack it,    access to the internet, just fetch <version>-config.tgz, unpack it,
1952    edit config/targets, and go (run config/install.sh).  The scipt will    edit config/targets, and go (run config/install.sh).  The script will
1953    fetch everything else that it might need all by itself.    fetch everything else that it might need all by itself.
1954    
1955    For CVS users, this mechanism is not relevant for source archives, but    For CVS users, this mechanism is not relevant for source archives, but

Legend:
Removed from v.615  
changed lines
  Added in v.729

root@smlnj-gforge.cs.uchicago.edu
ViewVC Help
Powered by ViewVC 1.0.0