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revision 1133, Tue Mar 12 03:56:23 2002 UTC revision 1238, Mon Jun 10 20:35:28 2002 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2002/06/10 16:35:00 EDT
18    Tag: blume-20020610-ieeereal
19    Description:
20    
21    I back-ported my implementation of IEEEReal.fromString from the
22    idlbasis-devel branch so that we can test it.
23    
24    Another small change is that ppDec tries to give more information
25    than just "<sig>" in the case of functors.  However, this code is
26    broken in some mysterious way if the functor's body's signature
27    has not been declared by ascription but gets inferred from the
28    implementation.  This needs fixing...
29    
30    ----------------------------------------------------------------------
31    Name: Matthias Blume
32    Date: 2002/05/31
33    Tag: blume-20020531-btrace-mode
34    Description:
35    
36    Resurrected SMLofNJ.Internals.BTrace.mode.  (It accidentally fell by
37    the wayside when I switched over to using Controls everywhere.)
38    
39    ----------------------------------------------------------------------
40    Name: Lal George
41    Date: 2002/05/23 12:21:40 EDT
42    Tag: george-20020523-visual-labels
43    Description:
44    
45    Labels are now displayed in the graphical output to make
46    the fall-through and target blocks obvious.
47    
48    ----------------------------------------------------------------------
49    Name: Matthias Blume
50    Date: 2002/05/22 11:03:00 EDT
51    Tag: blume-20020522-shrink
52    Description:
53    
54    John tweaked yesterday's fix for 1131 to handle an out-of-memory
55    situation that comes up when allocating huge arrays.
56    
57    ----------------------------------------------------------------------
58    Name: Matthias Blume
59    Date: 2002/05/21 16:00:00 EDT
60    Tag: Release_110_40
61    Description:
62    
63    New working release (110.40).  New bootfiles.
64    
65    [Also: John Reppy fixed GC bug 1131.]
66    
67    ----------------------------------------------------------------------
68    Name: Matthias Blume
69    Date: 2002/05/21 12:35:00 EDT
70    Tag: blume-20020521-cmdoc
71    Description:
72    
73    CM documentation update.
74    
75    ----------------------------------------------------------------------
76    Name: Matthias Blume
77    Date: 2002/05/21 10:55:00 EDT
78    Tag: blume-20020521-misc
79    Description:
80    
81    - John tweaked runtime to be silent on heap export (except when
82      GC messages are on).
83    - I added a few more things (cross-compiling versions of CMB) to
84      config/preloads (as suggestions).
85    
86    ----------------------------------------------------------------------
87    Name: Matthias Blume
88    Date: 2002/05/20 22:25:00 EDT
89    Tag: blume-20020520-controls
90    Description:
91    
92    - Added ControlUtil structure to control-lib.cm.
93    - Use it throughout.
94    - Used Controls facility to define MLRISC controls (as opposed to
95      registering MLRISC control ref cells with Controls after the fact)
96    - Fixed messed-up controls priorities.
97    
98    * Removed again all the stuff from config/preloads that one wouldn't
99      be able to preload at the time the initial heap image is built.
100      (Many libraries, e.g., CML, do not exist yet at this time.  The
101       only libraries that can be preloaded via config/preloads are those
102       that come bundled with the bootfiles.)
103    
104    ----------------------------------------------------------------------
105    Name: Matthias Blume
106    Date: 2002/05/20 10:59:00 EDT
107    Tag: blume-20020520-preloads
108    Description:
109    
110    Added a lot of commented-out suggestions for things to be included
111    in config/preloads.
112    
113    ----------------------------------------------------------------------
114    Name: Allen Leung
115    Date: 2002/05/18 14:20:00 EDT
116    Tag: leunga-20020518-mdl
117    Description:
118    
119    o Made the mdl tool stuff compile and run again.
120    o I've disabled all the stuff that depends on RTL specifications; they
121      are all badly broken anyway.
122    
123    ----------------------------------------------------------------------
124    Name: Matthias Blume
125    Date: 2002/05/17 16:49:00 EDT
126    Tag: blume-20020517-controls
127    Description:
128    
129    0. John Reppy made several modifications to the SML/NJ library.
130       In particular, there is a shiny new controls-lib.cm.
131    
132    1. Pushed new controls interface through compiler so that everything
133       compiles again.
134    
135    2. Added FormatComb and FORMAT_COMB to the CML version of the
136       SML/NJ library (so that CML compiles again).
137    
138    3. Modified init scripts because XXX_DEFAULT environment variables
139       are no longer with us.  (Boot-time initialization is now done
140       using the same environment variables that are also used for
141       startup-time initialization of controls.)
142    
143    ----------------------------------------------------------------------
144    Name: Lal George
145    Date: 2002/05/15 09:20:10 EDT
146    Tag: george-20020515-pseudo-op-decls
147    Description:
148    
149            All pseudo-ops emitted before the first segment declaration
150    such as TEXT, DATA, and BSS directives are assumed to be global
151    declarations and are emitted first in the assembly file. This is
152    useful in a number of situations where one has pseudo-ops that are not
153    specific to any segment, and also works around the constraint that one
154    cannot have client pseudo-ops in the TEXT segment.
155    
156            Because no segment is associated with these declarations it is
157    an error to allocate any space or objects before the first segment
158    directive and an exception will be raised. However, we cannot make
159    this check for client pseudo-ops.
160    
161            These top level declarations are a field in the CFG graph_info.
162    In theory you can continue to add to this field after the CFG has been
163    built -- provided you know what you are doing;-)
164    
165    ----------------------------------------------------------------------
166    Name: Matthias Blume
167    Date: 2002/05/13 16:40:00 EDT
168    Tag: blume-20020513-pp-etc
169    Description:
170    
171    A few minor bugfixes:
172    
173      - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
174        (Bogus printouts for redefined bindings still occur.  Compiler
175        bug should no longer occur now.  We need to redo the prettyprinter
176        from scratch.)
177    
178      - CM pathname printer now also adds escape sequences for ( and )
179    
180      - commend and docu fixes for ml-nlffi
181    
182    ----------------------------------------------------------------------
183    Name: Matthias Blume
184    Date: 2002/05/10 16:40:00 EDT
185    Tag: blume-20020510-erg-textio
186    Description:
187    
188    Applied the following bugfix provided by Emden Gansner:
189    
190        Output is corrupted when outputSubstr is used rather than output.
191    
192        The problem occurs when a substring
193    
194            ss = (s, dataStart, dataLen)
195    
196        where dataStart > 0, fills a stream buffer with avail bytes left.
197        avail bytes of s, starting at index dataStart, are copied into the
198        buffer, the buffer is flushed, and then the remaining dataLen-avail
199        bytes of ss are copied into the beginning of the buffer. Instead of
200        starting this copy at index dataStart+avail in s, the current code
201        starts the copy at index avail.
202    
203        Fix:
204        In text-io-fn.sml, change line 695 from
205             val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
206        to
207             val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
208    
209    ----------------------------------------------------------------------
210    Name: Matthias Blume
211    Date: 2002/04/12 13:55:00 EDT
212    Tag: blume-20020412-assyntax
213    Description:
214    
215    1. Grabbed newer assyntax.h from the XFree86 project.
216    2. Fiddled with how to compile X86.prim.asm without warnings.
217    3. (Very) Minor cleanup in CM.
218    
219    ----------------------------------------------------------------------
220    Name: Matthias Blume
221    Date: 2002/04/01 (no joke!) 17:07:00 EST
222    Tag: blume-20020401-x86div
223    Description:
224    
225    Added full support for div/mod/rem/quot on the x86, using the machine
226    instruction's two results (without clumsily recomputing the remainder)
227    directly where appropriate.
228    
229    Some more extensive power-of-two support was added to the x86 instruction
230    selector (avoiding expensive divs, mods, and muls where they can be
231    replaced with cheaper shifts and masks).  However, this sort of thing
232    ought to be done earlier, e.g., within the CPS optimizer so that
233    all architectures benefit from it.
234    
235    The compiler compiles to a fixed point, but changes might be somewhat
236    fragile nevertheless.  Please, report any strange things that you might
237    see wrt. div/mod/quot/rem...
238    
239    ----------------------------------------------------------------------
240    Name: Matthias Blume
241    Date: 2002/03/29 17:22:00
242    Tag: blume-20020329-div
243    Description:
244    
245    Fixed my broken div/mod logic.  Unfortunately, this means that the
246    inline code for div/mod now has one more comparison than before.
247    Fast paths (quotient > 0 or remainder = 0) are not affected, though.
248    The problem was with quotient = 0, because that alone does not tell
249    us which way the rounding went.  One then has to look at whether
250    remainder and divisor have the same sign...  :(
251    
252    Anyway, I replaced the bootfiles with fresh ones...
253    
254    ----------------------------------------------------------------------
255    Name: Matthias Blume
256    Date: 2002/03/29 14:10:00 EST
257    Tag: blume-20020329-inlprims
258    Description:
259    
260    NEW BOOTFILES!!!    Version number bumped to 110.39.3.
261    
262    Primops have changed. This means that the bin/boot-file formats have
263    changed as well.
264    
265    To make sure that there is no confusion, I made a new version.
266    
267    
268    CHANGES:
269    
270    * removed REMT from mltree (remainder should never overflow).
271    
272    * added primops to deal with divisions of all flavors to the frontend
273    
274    * handled these primops all the way through so they map to their respective
275      MLRISC support
276    
277    * used these primops in the implementation of Int, Int32, Word, Word32
278    
279    * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
280    
281    * parameterized INLMIN, INLMAX, and INLABS by a numkind
282    
283    * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
284      floating point
285    
286    * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
287      and Real (but Real.abs maps to a separate floating-point-only primop)
288    
289    
290    TODO items:
291    
292    * Hacked Alpha32 instruction selection, disabling the selection of REMx
293      instructions because the machine instruction encoder cannot handle
294      them.  (Hppa, PPC, and Sparc instruction selection did not handle
295      REM in the first place, and REM is supported by the x86 machine coder.)
296    
297    * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
298      selection phase.  (The two can be streamlined because the hardware
299      delivers both quotient and remainder at the same time anyway.)
300    
301    * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
302      (Currently the behavior is inconsistent both across architectures and
303      wrt. the draft Basis spec.)
304    
305    * Word8 should eventually be handled natively, too.
306    
307    * There seems to be one serious bug in mltree-gen.sml.  It appears, though,
308      as if there currently is no execution path that could trigger it in
309      SML/NJ.  (The assumptions underlying functions arith and promotable do not
310      hold for things like multiplication and division.)
311    
312    ----------------------------------------------------------------------
313    Name: Matthias Blume
314    Date: 2002/03/27 16:27:00 EST
315    Tag: blume-20020327-mlrisc-divisions
316    Description:
317    
318    Added support for all four division operations (ML's div, mod, quot,
319    and rem) to MLRISC.  In the course of doing so, I also rationalized
320    the naming (no more annoying switch-around of DIV and QUOT), by
321    parameterizing the operation by div_rounding_mode (which can be either
322    DIV_TO_ZERO or DIV_TO_NEGINF).
323    
324    The generic MLTreeGen functor takes care of compiling all four
325    operations down to only round-to-zero div.
326    
327    Missing pieces:
328    
329      * Doing something smarter than relying on MLTreeGen on architectures
330        like, e.g., the x86 where hardware division delivers both quotient and
331        remainder at the same time.  With this, the implementation of the
332        round-to-neginf operations could be further streamlined.
333    
334      * Remove inlining support for div/mod/rem from the frontend and replace it
335        with primops that get carried through to the backend.  Do this for all
336        int and word types.
337    
338    ----------------------------------------------------------------------
339    Name: Matthias Blume
340    Date: 2002/03/25 17:25:00 EST
341    Tag: blume-20020325-divmod
342    Description:
343    
344    I improved (hopefully without breaking them) the implementation of Int.div,
345    Int.mod, and Int.rem.   For this, the code in translate.sml now takes
346    advantage of the following observations:
347    
348      Let  q = x quot y      r = x rem y
349           d = x div  y      m = x mod y
350    
351    where "quot" is the round-to-zero version of integer division that
352    hardware usually provides.  Then we have:
353    
354         r = x - q * y        where neither the * nor the - will overflow
355         d = if q >= 0 orelse x = q * y then q else q - 1
356                              where neither the * nor the - will overflow
357         m = if q >= 0 orelse r = 0 then r else r + y
358                              where the + will not overflow
359    
360    This results in substantial simplification of the generated code.
361    The following table shows the number of CFG nodes and edges generated
362    for
363            fun f (x, y) = x OPER y
364            (* with OPER \in div, mod, quot, rem *)
365    
366    
367        OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
368        --------------------------------------------------------
369         div |         24 |         39 |         12 |         16
370         mod |         41 |         71 |         12 |         16
371        quot |          8 |         10 |          8 |         10
372         rem |         10 |         14 |          8 |         10
373    
374    
375    ----------------------------------------------------------------------
376    Name: Matthias Blume
377    Date: 2002/03/25 22:06:00 EST
378    Tag: blume-20020325-cprotobug
379    Description:
380    
381    Fixed a bug in cproto (c prototype decoder).
382    
383    ----------------------------------------------------------------------
384    Name: Matthias Blume
385    Date: 2002/03/25 16:00:00 EST
386    Tag: blume-20020325-raw-primops
387    Description:
388    
389    I did some cleanup to Allen's new primop code and
390    replaced yesterday's bootfiles with new ones.
391    (But they are stored in the same place.)
392    
393    ----------------------------------------------------------------------
394    Name: Matthias Blume
395    Date: 2002/03/24 22:40:00 EST
396    Tag: blume-20020324-bootfiles
397    Description:
398    
399    Made the bootfiles that Allen asked for.
400    
401    ----------------------------------------------------------------------
402    Name: Allen Leung
403    Date: 2002/03/23 15:50:00 EST
404    Tag: leunga-20020323-flint-cps-rcc-primops
405    Description:
406    
407      1. Changes to FLINT primops:
408    
409        (* make a call to a C-function;
410         * The primop carries C function prototype information and specifies
411         * which of its (ML-) arguments are floating point. C prototype
412         * information is for use by the backend, ML information is for
413         * use by the CPS converter. *)
414      | RAW_CCALL of { c_proto: CTypes.c_proto,
415                       ml_args: ccall_type list,
416                       ml_res_opt: ccall_type option,
417                       reentrant : bool
418                     } option
419       (* Allocate uninitialized storage on the heap.
420        * The record is meant to hold short-lived C objects, i.e., they
421        * are not ML pointers.  With the tag, the representation is
422        * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
423        *)
424      | RAW_RECORD of {tag:bool,sz:int}
425      and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
426    
427      2.  These CPS primops are now overloaded:
428    
429           rawload of {kind:numkind}
430           rawstore of {kind:numkind}
431    
432          The one argument form is:
433    
434             rawload {kind} address
435    
436          The two argument form is:
437    
438             rawload {kind} [ml object, byte-offset]
439    
440      3. RAW_CCALL/RCC now takes two extra arguments:
441    
442         a. The first is whether the C call is reentrant, i.e., whether
443            ML state should be saved and restored.
444         b. The second argument is a string argument specifying the name of
445            library and the C function.
446    
447         These things are currently not handled in the code generator, yet.
448    
449      4. In CProto,
450    
451         An encoding type of "bool" means "ml object" and is mapped into
452         C prototype of PTR.  Note that "bool" is different than "string",
453         even though "string" is also mapped into PTR, because "bool"
454         is assigned an CPS type of BOGt, while "string" is assigned INT32t.
455    
456      5. Pickler/unpicker
457    
458         Changed to handle RAW_RECORD and newest RAW_CCALL
459    
460      6. MLRiscGen,
461    
462         1. Changed to handle the new rawload/rawstore/rawrecord operators.
463         2. Code for handling C Calls has been moved to a new module CPSCCalls,
464            in the file CodeGen/cpscompile/cps-c-calls.sml
465    
466      7. Added the conditional move operator
467    
468             condmove of branch
469    
470         to cps.  Generation of this is still buggy so it is currently
471         disabled.
472    
473    ----------------------------------------------------------------------
474    Name: Lal George
475    Date: 2002/03/22 14:18:25 EST
476    Tag: george-20020322-cps-branch-prob
477    Description:
478    
479    Implemented the Ball-Larus branch prediction-heuristics, and
480    incorporated graphical viewers for control flow graphs.
481    
482    Ball-Larus Heuristics:
483    ---------------------
484    See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
485    
486    By design it uses the Dempster-Shafer theory for combining
487    probabilities.  For example, in the function:
488    
489        fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
490    
491    the ball-larus heuristics predicts that the n=0 is unlikely
492    (OH-heuristic), and the 'then' branch is unlikely because of the
493    RH-heuristic -- giving the 'then' branch an even lower combined
494    probability using the Dempster-Shafer theory.
495    
496    Finally, John Reppy's loop analysis in MLRISC, further lowers the
497    probability of the 'then' branch because of the loop in the else
498    branch.
499    
500    
501    Graphical Viewing:
502    ------------------
503    I merely plugged in Allen's graphical viewers into the compiler. The
504    additional code is not much. At the top level, saying:
505    
506            Control.MLRISC.getFlag "cfg-graphical-view" := true;
507    
508    will display the graphical view of the control flow graph just before
509    back-patching.  daVinci must be in your path for this to work. If
510    daVinci is not available, then the default viewer can be changed
511    using:
512    
513            Control.MLRISC.getString "viewer"
514    
515    which can be set to "dot" or "vcg" for the corresponding viewers. Of
516    course, these viewers must be in your path.
517    
518    The above will display the compilation unit at the level of clusters,
519    many of which are small, boring, and un-interesting. Also setting:
520    
521            Control.MLRISC.getInt "cfg-graphical-view_size"
522    
523    will display clusters that are larger than the value set by the above.
524    
525    
526    ----------------------------------------------------------------------
527    Name: Matthias Blume
528    Date: 2002/03/21 22:20:00 EST
529    Tag: blume-20020321-kmp-bugfix
530    Description:
531    
532    Changed the interface to the KMP routine in PreString and fixed
533    a minor bug in one place where it was used.
534    
535    ----------------------------------------------------------------------
536    Name: Allen Leung
537    Date: 2002/03/21 20:30:00 EST
538    Tag: leunga-20020321-cfg
539    Description:
540    
541      Fixed a potential problem in cfg edge splitting.
542    
543    ----------------------------------------------------------------------
544    Name: Allen Leung
545    Date: 2002/03/21 17:15:00 EST
546    Tag: leunga-20020321-x86-fp-cfg
547    Description:
548    
549      1. Recoded the buggy parts of x86-fp.
550    
551         a. All the block reordering code has been removed.
552            We now depend on the block placement phases to do this work.
553    
554         b. Critical edge splitting code has been simplified and moved into the
555            CFG modules, as where they belong.
556    
557         Both of these were quite buggy and complex.  The code is now much, much
558         simpler.
559    
560      2. X86 backend.
561    
562         a. Added instructions for 64-bit support.  Instruction selection for
563            64-bit has not been committed, however, since that
564            requires changes to MLTREE which haven't been approved by
565            Lal and John.
566    
567         b. Added support for FUCOMI and FUCOMIP when generating code for
568            PentiumPro and above.  We only generate these instructions in
569            the fast-fp mode.
570    
571         c. Added cases for JP and JNP in X86FreqProps.
572    
573      3. CFG
574    
575         CFG now has a bunch of methods for edge splitting and merging.
576    
577      4. Machine description.
578    
579         John's simplification of MLTREE_BASIS.fcond broke a few machine
580         description things:
581    
582         rtl-build.{sig,sml} and hppa.mdl fixed.
583    
584         NOTE: the machine description stuff in the repository is still broken.
585               Again, I can't put my fixes in because that involves
586               changes to MLTREE.
587    
588    ----------------------------------------------------------------------
589    Name: Matthias Blume
590    Date: 2002/03/20 15:55:00 EST
591    Tag: blume-20020320-kmp
592    Description:
593    
594    Implemented Knuth-Morris-Pratt string matching in PreString and used
595    it for String.isSubstring, Substring.isSubstring, and
596    Substring.position.
597    
598    (Might need some stress-testing.  Simple examples worked fine.)
599    
600    ----------------------------------------------------------------------
601    Name: Matthias Blume
602    Date: 2002/03/19 16:37:00 EST
603    Tag: blume-20020319-witnesses
604    Description:
605    
606    Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
607    
608    This implements a generic mechanism for changing constness qualifiers
609    anywhere within big C types without resorting to outright "casts".
610    (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
611    modify the constness at the outermost level.)
612    The implementation of "convert" is based on the idea of "witness"
613    values -- values that are not used by the operation but whose types
614    "testify" to their applicability.  On the implementation side, "convert"
615    is simply a projection (returning its second curried argument).  With
616    cross-module inlining, it should not result in any machine code being
617    generated.
618    
619    ----------------------------------------------------------------------
620    Name: Matthias Blume
621    Date: 2002/03/15 16:40:00 EST
622    Tag: blume-20020315-basis
623    Description:
624    
625    Provided (preliminary?) implementations for
626    
627      {String,Substring}.{concatWith,isSuffix,isSubstring}
628    
629    and
630    
631      Substring.full
632    
633    Those are in the Basis spec but they were missing in SML/NJ.
634    
635    ----------------------------------------------------------------------
636    Name: Matthias Blume
637    Date: 2002/03/14 21:30:00 EST
638    Tag: blume-20020314-controls
639    Description:
640    
641    Controls:
642    ---------
643    
644    1. Factored out the recently-added Controls : CONTROLS stuff and put
645       it into its own library $/controls-lib.cm.  The source tree for
646       this is under src/smlnj-lib/Controls.
647    
648    2. Changed the names of types and functions in this interface, so they
649       make a bit more "sense":
650    
651          module -> registry
652          'a registry -> 'a group
653    
654    3. The interface now deals in ref cells only.  The getter/setter interface
655       is (mostly) gone.
656    
657    4. Added a function that lets one register an already-existing ref cell.
658    
659    5. Made the corresponding modifications to the rest of the code so that
660       everything compiles again.
661    
662    6. Changed the implementation of Controls.MLRISC back to something closer
663       to the original.  In particular, this module (and therefore MLRISC)
664       does not depend on Controls.  There now is some link-time code in
665       int-sys.sml that registers the MLRISC controls with the Controls
666       module.
667    
668    CM:
669    ---
670    
671      * One can now specify the lambda-split aggressiveness in init.cmi.
672    
673    ----------------------------------------------------------------------
674    Name: Allen Leung
675    Date: 2002/03/13 17:30:00 EST
676    Tag: leunga-20020313-x86-fp-unary
677    Description:
678    
679    Bug fix for:
680    
681    > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
682    > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
683    > - fun f(x,(y,z)) = Real.~ y;
684    > [autoloading]
685    > [autoloading done]
686    >       fchsl   (%eax), 184(%esp)
687    > Error: MLRisc bug: X86MCEmitter.emitInstr
688    >
689    > uncaught exception Error
690    >   raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
691    
692    The problem was that the code generator did not generate any fp registers
693    in this case, and the ra didn't know that it needed to run the X86FP phase to
694    translate the pseudo fp instruction.   This only happened with unary fp
695    operators in certain situations.
696    
697    ----------------------------------------------------------------------
698    Name: Matthias Blume
699    Date: 2002/03/13 14:00:00 EST
700    Tag: blume-20020313-overload-etc
701    Description:
702    
703    1. Added _overload as a synonym for overload for backward compatibility.
704       (Control.overloadKW must be true for either version to be accepted.)
705    
706    2. Fixed bug in install script that caused more things to be installed
707       than what was requested in config/targets.
708    
709    3. Made CM aware of the (_)overload construct so that autoloading
710       works.
711    
712    ----------------------------------------------------------------------
713    Name: Matthias Blume
714    Date: 2002/03/12 22:03:00 EST
715    Tag: blume-20020312-url
716    Description:
717    
718    Forgot to update BOOT and srcarchiveurl.
719    
720    ----------------------------------------------------------------------
721    Name: Matthias Blume
722    Date: 2002/03/12 17:30:00 EST
723    Tag: blume-20020312-version110392
724    Description:
725    
726    Yet another version number bump (because of small changes to the
727    binfile format).  Version number is now 110.39.2.  NEW BOOTFILES!
728    
729    Changes:
730    
731      The new pid generation scheme described a few weeks ago was overly
732      complicated.  I implemented a new mechanism that is simpler and
733      provides a bit more "stability":  Once CM has seen a compilation
734      unit, it keeps its identity constant (as long as you do not delete
735      those crucial CM/GUID/* files).  This means that when you change
736      an interface, compile, then go back to the old interface, and
737      compile again, you arrive at the original pid.
738    
739      There now also is a mechanism that instructs CM to use the plain
740      environment hash as a module's pid (effectively making its GUID
741      the empty string).  For this, "noguid" must be specified as an
742      option to the .sml file in question within its .cm file.
743      This is most useful for code that is being generated by tools such
744      as ml-nlffigen (because during development programmers tend to
745      erase the tool's entire output directory tree including CM's cached
746      GUIDs).  "noguid" is somewhat dangerous (since it can be used to locally
747      revert to the old, broken behavior of SML/NJ, but in specific cases
748      where there is no danger of interface confusion, its use is ok
749      (I think).
750    
751      ml-nlffigen by default generates "noguid" annotations.  They can be
752      turned off by specifying -guid in its command line.
753    
754    ----------------------------------------------------------------------
755    Name: Lal George
756    Date: 2002/03/12 12 14:42:36 EST
757    Tag: george-20020312-frequency-computation
758    Description:
759    
760    Integrated jump chaining and static block frequency into the
761    compiler. More details and numbers later.
762    
763    ----------------------------------------------------------------------
764  Name: Lal George  Name: Lal George
765  Date: 2002/03/11 11 22:38:53 EST  Date: 2002/03/11 11 22:38:53 EST
766  Tag: george-20020311-jump-chain-elim  Tag: george-20020311-jump-chain-elim
# Line 60  Line 808 
808  ----------------------------------------------------------------------  ----------------------------------------------------------------------
809  Name: Allen Leung  Name: Allen Leung
810  Date: 2002/03/11 10:30:00 EST  Date: 2002/03/11 10:30:00 EST
811  Tag: leunga-20020310-runtime-string0  Tag: leunga-20020311-runtime-string0
812  Description:  Description:
813    
814     The representation of the empty string now points to a     The representation of the empty string now points to a

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