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 1130, Mon Mar 11 04:49:41 2002 UTC revision 1279, Wed Oct 16 14:21:07 2002 UTC
# Line 13  Line 13 
13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2002/10/16 12:00:00 EDT
18    Tag: Release_110_42
19    Description:
20    
21    New working release.  New bootfiles.
22    
23    ----------------------------------------------------------------------
24    Name: Matthias Blume
25    Date: 2002/10/10 13:10:00 EDT
26    Tag: blume-20021010-ppc-divs
27    Description:
28    
29    The mltree operator DIVS must be implemented with an overflow check on
30    the PPC because the hardware indicates divide-by-zero using "overflow" as
31    well.
32    
33    ----------------------------------------------------------------------
34    Name: Matthias Blume
35    Date: 2002/07/23 11:45:00
36    Tag: blume-20020723-smlnj-home
37    Description:
38    
39    Sml now senses the SMLNJ_HOME environment variable.  If this is set,
40    then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
41    CM_PATHCONFIG is also set), the path configuration file is assumed
42    to be in $SMLNJ_HOME/lib/pathconfig.  This way one can easily move
43    the entire tree to some other place and everything will "just work".
44    
45    (Companion commands such as ml-build and ml-makedepend also sense this
46    variable.)
47    
48    ----------------------------------------------------------------------
49    Name: Matthias Blume
50    Date: 2002/07/12 21:19:00 EDT
51    Tag: blume-20020712-liveness
52    Description:
53    
54    Exported two useful "step" functions from liveness module (MLRISC).
55    
56    ----------------------------------------------------------------------
57    Name: Matthias Blume
58    Date: 2002/07/05 16:00 EDT
59    Tag: Release_110_41
60    Description:
61    
62    New working release.  New bootfiles.
63    
64    ----------------------------------------------------------------------
65    Name: Matthias Blume
66    Date: 2002/07/05 10:25:00 EDT
67    Tag: blume-20020705-btimp
68    Description:
69    
70    Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
71    other clients can set up backtracing support.
72    
73    ----------------------------------------------------------------------
74    Name: Matthias Blume
75    Date: 2002/06/25 17:23:00 EDT
76    Tag: blume-20020625-fpmax
77    Description:
78    
79    Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
80    case.  (The sense of the isNaN test was reversed -- which made min and
81    max always return their first argument.)
82    
83    ----------------------------------------------------------------------
84    Name: Matthias Blume
85    Date: 2002/06/11
86    Tag: blume-20020611-unixpath
87    Description:
88    
89    Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
90    
91    ----------------------------------------------------------------------
92    Name: Matthias Blume
93    Date: 2002/06/10 16:35:00 EDT
94    Tag: blume-20020610-ieeereal
95    Description:
96    
97    I back-ported my implementation of IEEEReal.fromString from the
98    idlbasis-devel branch so that we can test it.
99    
100    Another small change is that ppDec tries to give more information
101    than just "<sig>" in the case of functors.  However, this code is
102    broken in some mysterious way if the functor's body's signature
103    has not been declared by ascription but gets inferred from the
104    implementation.  This needs fixing...
105    
106    ----------------------------------------------------------------------
107    Name: Matthias Blume
108    Date: 2002/05/31
109    Tag: blume-20020531-btrace-mode
110    Description:
111    
112    Resurrected SMLofNJ.Internals.BTrace.mode.  (It accidentally fell by
113    the wayside when I switched over to using Controls everywhere.)
114    
115    ----------------------------------------------------------------------
116    Name: Lal George
117    Date: 2002/05/23 12:21:40 EDT
118    Tag: george-20020523-visual-labels
119    Description:
120    
121    Labels are now displayed in the graphical output to make
122    the fall-through and target blocks obvious.
123    
124    ----------------------------------------------------------------------
125    Name: Matthias Blume
126    Date: 2002/05/22 11:03:00 EDT
127    Tag: blume-20020522-shrink
128    Description:
129    
130    John tweaked yesterday's fix for 1131 to handle an out-of-memory
131    situation that comes up when allocating huge arrays.
132    
133    ----------------------------------------------------------------------
134    Name: Matthias Blume
135    Date: 2002/05/21 16:00:00 EDT
136    Tag: Release_110_40
137    Description:
138    
139    New working release (110.40).  New bootfiles.
140    
141    [Also: John Reppy fixed GC bug 1131.]
142    
143    ----------------------------------------------------------------------
144    Name: Matthias Blume
145    Date: 2002/05/21 12:35:00 EDT
146    Tag: blume-20020521-cmdoc
147    Description:
148    
149    CM documentation update.
150    
151    ----------------------------------------------------------------------
152    Name: Matthias Blume
153    Date: 2002/05/21 10:55:00 EDT
154    Tag: blume-20020521-misc
155    Description:
156    
157    - John tweaked runtime to be silent on heap export (except when
158      GC messages are on).
159    - I added a few more things (cross-compiling versions of CMB) to
160      config/preloads (as suggestions).
161    
162    ----------------------------------------------------------------------
163    Name: Matthias Blume
164    Date: 2002/05/20 22:25:00 EDT
165    Tag: blume-20020520-controls
166    Description:
167    
168    - Added ControlUtil structure to control-lib.cm.
169    - Use it throughout.
170    - Used Controls facility to define MLRISC controls (as opposed to
171      registering MLRISC control ref cells with Controls after the fact)
172    - Fixed messed-up controls priorities.
173    
174    * Removed again all the stuff from config/preloads that one wouldn't
175      be able to preload at the time the initial heap image is built.
176      (Many libraries, e.g., CML, do not exist yet at this time.  The
177       only libraries that can be preloaded via config/preloads are those
178       that come bundled with the bootfiles.)
179    
180    ----------------------------------------------------------------------
181    Name: Matthias Blume
182    Date: 2002/05/20 10:59:00 EDT
183    Tag: blume-20020520-preloads
184    Description:
185    
186    Added a lot of commented-out suggestions for things to be included
187    in config/preloads.
188    
189    ----------------------------------------------------------------------
190    Name: Allen Leung
191    Date: 2002/05/18 14:20:00 EDT
192    Tag: leunga-20020518-mdl
193    Description:
194    
195    o Made the mdl tool stuff compile and run again.
196    o I've disabled all the stuff that depends on RTL specifications; they
197      are all badly broken anyway.
198    
199    ----------------------------------------------------------------------
200    Name: Matthias Blume
201    Date: 2002/05/17 16:49:00 EDT
202    Tag: blume-20020517-controls
203    Description:
204    
205    0. John Reppy made several modifications to the SML/NJ library.
206       In particular, there is a shiny new controls-lib.cm.
207    
208    1. Pushed new controls interface through compiler so that everything
209       compiles again.
210    
211    2. Added FormatComb and FORMAT_COMB to the CML version of the
212       SML/NJ library (so that CML compiles again).
213    
214    3. Modified init scripts because XXX_DEFAULT environment variables
215       are no longer with us.  (Boot-time initialization is now done
216       using the same environment variables that are also used for
217       startup-time initialization of controls.)
218    
219    ----------------------------------------------------------------------
220    Name: Lal George
221    Date: 2002/05/15 09:20:10 EDT
222    Tag: george-20020515-pseudo-op-decls
223    Description:
224    
225            All pseudo-ops emitted before the first segment declaration
226    such as TEXT, DATA, and BSS directives are assumed to be global
227    declarations and are emitted first in the assembly file. This is
228    useful in a number of situations where one has pseudo-ops that are not
229    specific to any segment, and also works around the constraint that one
230    cannot have client pseudo-ops in the TEXT segment.
231    
232            Because no segment is associated with these declarations it is
233    an error to allocate any space or objects before the first segment
234    directive and an exception will be raised. However, we cannot make
235    this check for client pseudo-ops.
236    
237            These top level declarations are a field in the CFG graph_info.
238    In theory you can continue to add to this field after the CFG has been
239    built -- provided you know what you are doing;-)
240    
241    ----------------------------------------------------------------------
242    Name: Matthias Blume
243    Date: 2002/05/13 16:40:00 EDT
244    Tag: blume-20020513-pp-etc
245    Description:
246    
247    A few minor bugfixes:
248    
249      - Stopgap measure for bug recently reported by Elsa Gunter (ppDec).
250        (Bogus printouts for redefined bindings still occur.  Compiler
251        bug should no longer occur now.  We need to redo the prettyprinter
252        from scratch.)
253    
254      - CM pathname printer now also adds escape sequences for ( and )
255    
256      - commend and docu fixes for ml-nlffi
257    
258    ----------------------------------------------------------------------
259    Name: Matthias Blume
260    Date: 2002/05/10 16:40:00 EDT
261    Tag: blume-20020510-erg-textio
262    Description:
263    
264    Applied the following bugfix provided by Emden Gansner:
265    
266        Output is corrupted when outputSubstr is used rather than output.
267    
268        The problem occurs when a substring
269    
270            ss = (s, dataStart, dataLen)
271    
272        where dataStart > 0, fills a stream buffer with avail bytes left.
273        avail bytes of s, starting at index dataStart, are copied into the
274        buffer, the buffer is flushed, and then the remaining dataLen-avail
275        bytes of ss are copied into the beginning of the buffer. Instead of
276        starting this copy at index dataStart+avail in s, the current code
277        starts the copy at index avail.
278    
279        Fix:
280        In text-io-fn.sml, change line 695 from
281             val needsFlush = copyVec(v, avail, dataLen-avail, buf, 0)
282        to
283             val needsFlush = copyVec(v, dataStart+avail, dataLen-avail, buf, 0)
284    
285    ----------------------------------------------------------------------
286    Name: Matthias Blume
287    Date: 2002/04/12 13:55:00 EDT
288    Tag: blume-20020412-assyntax
289    Description:
290    
291    1. Grabbed newer assyntax.h from the XFree86 project.
292    2. Fiddled with how to compile X86.prim.asm without warnings.
293    3. (Very) Minor cleanup in CM.
294    
295    ----------------------------------------------------------------------
296    Name: Matthias Blume
297    Date: 2002/04/01 (no joke!) 17:07:00 EST
298    Tag: blume-20020401-x86div
299    Description:
300    
301    Added full support for div/mod/rem/quot on the x86, using the machine
302    instruction's two results (without clumsily recomputing the remainder)
303    directly where appropriate.
304    
305    Some more extensive power-of-two support was added to the x86 instruction
306    selector (avoiding expensive divs, mods, and muls where they can be
307    replaced with cheaper shifts and masks).  However, this sort of thing
308    ought to be done earlier, e.g., within the CPS optimizer so that
309    all architectures benefit from it.
310    
311    The compiler compiles to a fixed point, but changes might be somewhat
312    fragile nevertheless.  Please, report any strange things that you might
313    see wrt. div/mod/quot/rem...
314    
315    ----------------------------------------------------------------------
316    Name: Matthias Blume
317    Date: 2002/03/29 17:22:00
318    Tag: blume-20020329-div
319    Description:
320    
321    Fixed my broken div/mod logic.  Unfortunately, this means that the
322    inline code for div/mod now has one more comparison than before.
323    Fast paths (quotient > 0 or remainder = 0) are not affected, though.
324    The problem was with quotient = 0, because that alone does not tell
325    us which way the rounding went.  One then has to look at whether
326    remainder and divisor have the same sign...  :(
327    
328    Anyway, I replaced the bootfiles with fresh ones...
329    
330    ----------------------------------------------------------------------
331    Name: Matthias Blume
332    Date: 2002/03/29 14:10:00 EST
333    Tag: blume-20020329-inlprims
334    Description:
335    
336    NEW BOOTFILES!!!    Version number bumped to 110.39.3.
337    
338    Primops have changed. This means that the bin/boot-file formats have
339    changed as well.
340    
341    To make sure that there is no confusion, I made a new version.
342    
343    
344    CHANGES:
345    
346    * removed REMT from mltree (remainder should never overflow).
347    
348    * added primops to deal with divisions of all flavors to the frontend
349    
350    * handled these primops all the way through so they map to their respective
351      MLRISC support
352    
353    * used these primops in the implementation of Int, Int32, Word, Word32
354    
355    * removed INLDIV, INLMOD, and INLREM as they are no longer necessary
356    
357    * parameterized INLMIN, INLMAX, and INLABS by a numkind
358    
359    * translate.sml now deals with all flavors of INL{MIN,MAX,ABS}, including
360      floating point
361    
362    * used INL{MIN,MAX,ABS} in the implementation of Int, Int32, Word, Word32,
363      and Real (but Real.abs maps to a separate floating-point-only primop)
364    
365    
366    TODO items:
367    
368    * Hacked Alpha32 instruction selection, disabling the selection of REMx
369      instructions because the machine instruction encoder cannot handle
370      them.  (Hppa, PPC, and Sparc instruction selection did not handle
371      REM in the first place, and REM is supported by the x86 machine coder.)
372    
373    * Handle DIV and MOD with DIV_TO_NEGINF directly in the x86 instruction
374      selection phase.  (The two can be streamlined because the hardware
375      delivers both quotient and remainder at the same time anyway.)
376    
377    * Think about what to do with "valOf(Int32.minInt) div ~1" and friends.
378      (Currently the behavior is inconsistent both across architectures and
379      wrt. the draft Basis spec.)
380    
381    * Word8 should eventually be handled natively, too.
382    
383    * There seems to be one serious bug in mltree-gen.sml.  It appears, though,
384      as if there currently is no execution path that could trigger it in
385      SML/NJ.  (The assumptions underlying functions arith and promotable do not
386      hold for things like multiplication and division.)
387    
388    ----------------------------------------------------------------------
389    Name: Matthias Blume
390    Date: 2002/03/27 16:27:00 EST
391    Tag: blume-20020327-mlrisc-divisions
392    Description:
393    
394    Added support for all four division operations (ML's div, mod, quot,
395    and rem) to MLRISC.  In the course of doing so, I also rationalized
396    the naming (no more annoying switch-around of DIV and QUOT), by
397    parameterizing the operation by div_rounding_mode (which can be either
398    DIV_TO_ZERO or DIV_TO_NEGINF).
399    
400    The generic MLTreeGen functor takes care of compiling all four
401    operations down to only round-to-zero div.
402    
403    Missing pieces:
404    
405      * Doing something smarter than relying on MLTreeGen on architectures
406        like, e.g., the x86 where hardware division delivers both quotient and
407        remainder at the same time.  With this, the implementation of the
408        round-to-neginf operations could be further streamlined.
409    
410      * Remove inlining support for div/mod/rem from the frontend and replace it
411        with primops that get carried through to the backend.  Do this for all
412        int and word types.
413    
414    ----------------------------------------------------------------------
415    Name: Matthias Blume
416    Date: 2002/03/25 17:25:00 EST
417    Tag: blume-20020325-divmod
418    Description:
419    
420    I improved (hopefully without breaking them) the implementation of Int.div,
421    Int.mod, and Int.rem.   For this, the code in translate.sml now takes
422    advantage of the following observations:
423    
424      Let  q = x quot y      r = x rem y
425           d = x div  y      m = x mod y
426    
427    where "quot" is the round-to-zero version of integer division that
428    hardware usually provides.  Then we have:
429    
430         r = x - q * y        where neither the * nor the - will overflow
431         d = if q >= 0 orelse x = q * y then q else q - 1
432                              where neither the * nor the - will overflow
433         m = if q >= 0 orelse r = 0 then r else r + y
434                              where the + will not overflow
435    
436    This results in substantial simplification of the generated code.
437    The following table shows the number of CFG nodes and edges generated
438    for
439            fun f (x, y) = x OPER y
440            (* with OPER \in div, mod, quot, rem *)
441    
442    
443        OPER | nodes(old) | edges(old) | nodes(new) | edges(new)
444        --------------------------------------------------------
445         div |         24 |         39 |         12 |         16
446         mod |         41 |         71 |         12 |         16
447        quot |          8 |         10 |          8 |         10
448         rem |         10 |         14 |          8 |         10
449    
450    
451    ----------------------------------------------------------------------
452    Name: Matthias Blume
453    Date: 2002/03/25 22:06:00 EST
454    Tag: blume-20020325-cprotobug
455    Description:
456    
457    Fixed a bug in cproto (c prototype decoder).
458    
459    ----------------------------------------------------------------------
460    Name: Matthias Blume
461    Date: 2002/03/25 16:00:00 EST
462    Tag: blume-20020325-raw-primops
463    Description:
464    
465    I did some cleanup to Allen's new primop code and
466    replaced yesterday's bootfiles with new ones.
467    (But they are stored in the same place.)
468    
469    ----------------------------------------------------------------------
470    Name: Matthias Blume
471    Date: 2002/03/24 22:40:00 EST
472    Tag: blume-20020324-bootfiles
473    Description:
474    
475    Made the bootfiles that Allen asked for.
476    
477    ----------------------------------------------------------------------
478    Name: Allen Leung
479    Date: 2002/03/23 15:50:00 EST
480    Tag: leunga-20020323-flint-cps-rcc-primops
481    Description:
482    
483      1. Changes to FLINT primops:
484    
485        (* make a call to a C-function;
486         * The primop carries C function prototype information and specifies
487         * which of its (ML-) arguments are floating point. C prototype
488         * information is for use by the backend, ML information is for
489         * use by the CPS converter. *)
490      | RAW_CCALL of { c_proto: CTypes.c_proto,
491                       ml_args: ccall_type list,
492                       ml_res_opt: ccall_type option,
493                       reentrant : bool
494                     } option
495       (* Allocate uninitialized storage on the heap.
496        * The record is meant to hold short-lived C objects, i.e., they
497        * are not ML pointers.  With the tag, the representation is
498        * the same as RECORD with tag tag_raw32 (sz=4), or tag_fblock (sz=8)
499        *)
500      | RAW_RECORD of {tag:bool,sz:int}
501      and ccall_type = CCALL_INT32 | CCALL_REAL64 | CCALL_ML_PTR
502    
503      2.  These CPS primops are now overloaded:
504    
505           rawload of {kind:numkind}
506           rawstore of {kind:numkind}
507    
508          The one argument form is:
509    
510             rawload {kind} address
511    
512          The two argument form is:
513    
514             rawload {kind} [ml object, byte-offset]
515    
516      3. RAW_CCALL/RCC now takes two extra arguments:
517    
518         a. The first is whether the C call is reentrant, i.e., whether
519            ML state should be saved and restored.
520         b. The second argument is a string argument specifying the name of
521            library and the C function.
522    
523         These things are currently not handled in the code generator, yet.
524    
525      4. In CProto,
526    
527         An encoding type of "bool" means "ml object" and is mapped into
528         C prototype of PTR.  Note that "bool" is different than "string",
529         even though "string" is also mapped into PTR, because "bool"
530         is assigned an CPS type of BOGt, while "string" is assigned INT32t.
531    
532      5. Pickler/unpicker
533    
534         Changed to handle RAW_RECORD and newest RAW_CCALL
535    
536      6. MLRiscGen,
537    
538         1. Changed to handle the new rawload/rawstore/rawrecord operators.
539         2. Code for handling C Calls has been moved to a new module CPSCCalls,
540            in the file CodeGen/cpscompile/cps-c-calls.sml
541    
542      7. Added the conditional move operator
543    
544             condmove of branch
545    
546         to cps.  Generation of this is still buggy so it is currently
547         disabled.
548    
549    ----------------------------------------------------------------------
550    Name: Lal George
551    Date: 2002/03/22 14:18:25 EST
552    Tag: george-20020322-cps-branch-prob
553    Description:
554    
555    Implemented the Ball-Larus branch prediction-heuristics, and
556    incorporated graphical viewers for control flow graphs.
557    
558    Ball-Larus Heuristics:
559    ---------------------
560    See the file compiler/CodeGen/cpscompile/cpsBranchProb.sml.
561    
562    By design it uses the Dempster-Shafer theory for combining
563    probabilities.  For example, in the function:
564    
565        fun f(n,acc) = if n = 0 then acc else f(n-1, n*acc)
566    
567    the ball-larus heuristics predicts that the n=0 is unlikely
568    (OH-heuristic), and the 'then' branch is unlikely because of the
569    RH-heuristic -- giving the 'then' branch an even lower combined
570    probability using the Dempster-Shafer theory.
571    
572    Finally, John Reppy's loop analysis in MLRISC, further lowers the
573    probability of the 'then' branch because of the loop in the else
574    branch.
575    
576    
577    Graphical Viewing:
578    ------------------
579    I merely plugged in Allen's graphical viewers into the compiler. The
580    additional code is not much. At the top level, saying:
581    
582            Control.MLRISC.getFlag "cfg-graphical-view" := true;
583    
584    will display the graphical view of the control flow graph just before
585    back-patching.  daVinci must be in your path for this to work. If
586    daVinci is not available, then the default viewer can be changed
587    using:
588    
589            Control.MLRISC.getString "viewer"
590    
591    which can be set to "dot" or "vcg" for the corresponding viewers. Of
592    course, these viewers must be in your path.
593    
594    The above will display the compilation unit at the level of clusters,
595    many of which are small, boring, and un-interesting. Also setting:
596    
597            Control.MLRISC.getInt "cfg-graphical-view_size"
598    
599    will display clusters that are larger than the value set by the above.
600    
601    
602    ----------------------------------------------------------------------
603    Name: Matthias Blume
604    Date: 2002/03/21 22:20:00 EST
605    Tag: blume-20020321-kmp-bugfix
606    Description:
607    
608    Changed the interface to the KMP routine in PreString and fixed
609    a minor bug in one place where it was used.
610    
611    ----------------------------------------------------------------------
612    Name: Allen Leung
613    Date: 2002/03/21 20:30:00 EST
614    Tag: leunga-20020321-cfg
615    Description:
616    
617      Fixed a potential problem in cfg edge splitting.
618    
619    ----------------------------------------------------------------------
620    Name: Allen Leung
621    Date: 2002/03/21 17:15:00 EST
622    Tag: leunga-20020321-x86-fp-cfg
623    Description:
624    
625      1. Recoded the buggy parts of x86-fp.
626    
627         a. All the block reordering code has been removed.
628            We now depend on the block placement phases to do this work.
629    
630         b. Critical edge splitting code has been simplified and moved into the
631            CFG modules, as where they belong.
632    
633         Both of these were quite buggy and complex.  The code is now much, much
634         simpler.
635    
636      2. X86 backend.
637    
638         a. Added instructions for 64-bit support.  Instruction selection for
639            64-bit has not been committed, however, since that
640            requires changes to MLTREE which haven't been approved by
641            Lal and John.
642    
643         b. Added support for FUCOMI and FUCOMIP when generating code for
644            PentiumPro and above.  We only generate these instructions in
645            the fast-fp mode.
646    
647         c. Added cases for JP and JNP in X86FreqProps.
648    
649      3. CFG
650    
651         CFG now has a bunch of methods for edge splitting and merging.
652    
653      4. Machine description.
654    
655         John's simplification of MLTREE_BASIS.fcond broke a few machine
656         description things:
657    
658         rtl-build.{sig,sml} and hppa.mdl fixed.
659    
660         NOTE: the machine description stuff in the repository is still broken.
661               Again, I can't put my fixes in because that involves
662               changes to MLTREE.
663    
664    ----------------------------------------------------------------------
665    Name: Matthias Blume
666    Date: 2002/03/20 15:55:00 EST
667    Tag: blume-20020320-kmp
668    Description:
669    
670    Implemented Knuth-Morris-Pratt string matching in PreString and used
671    it for String.isSubstring, Substring.isSubstring, and
672    Substring.position.
673    
674    (Might need some stress-testing.  Simple examples worked fine.)
675    
676    ----------------------------------------------------------------------
677    Name: Matthias Blume
678    Date: 2002/03/19 16:37:00 EST
679    Tag: blume-20020319-witnesses
680    Description:
681    
682    Added a structure C.W and functions convert/Ptr.convert to ml-nlffi-lib.
683    
684    This implements a generic mechanism for changing constness qualifiers
685    anywhere within big C types without resorting to outright "casts".
686    (So far, functions such as C.rw/C.ro or C.Ptr.rw/C.Ptr.ro only let you
687    modify the constness at the outermost level.)
688    The implementation of "convert" is based on the idea of "witness"
689    values -- values that are not used by the operation but whose types
690    "testify" to their applicability.  On the implementation side, "convert"
691    is simply a projection (returning its second curried argument).  With
692    cross-module inlining, it should not result in any machine code being
693    generated.
694    
695    ----------------------------------------------------------------------
696    Name: Matthias Blume
697    Date: 2002/03/15 16:40:00 EST
698    Tag: blume-20020315-basis
699    Description:
700    
701    Provided (preliminary?) implementations for
702    
703      {String,Substring}.{concatWith,isSuffix,isSubstring}
704    
705    and
706    
707      Substring.full
708    
709    Those are in the Basis spec but they were missing in SML/NJ.
710    
711    ----------------------------------------------------------------------
712    Name: Matthias Blume
713    Date: 2002/03/14 21:30:00 EST
714    Tag: blume-20020314-controls
715    Description:
716    
717    Controls:
718    ---------
719    
720    1. Factored out the recently-added Controls : CONTROLS stuff and put
721       it into its own library $/controls-lib.cm.  The source tree for
722       this is under src/smlnj-lib/Controls.
723    
724    2. Changed the names of types and functions in this interface, so they
725       make a bit more "sense":
726    
727          module -> registry
728          'a registry -> 'a group
729    
730    3. The interface now deals in ref cells only.  The getter/setter interface
731       is (mostly) gone.
732    
733    4. Added a function that lets one register an already-existing ref cell.
734    
735    5. Made the corresponding modifications to the rest of the code so that
736       everything compiles again.
737    
738    6. Changed the implementation of Controls.MLRISC back to something closer
739       to the original.  In particular, this module (and therefore MLRISC)
740       does not depend on Controls.  There now is some link-time code in
741       int-sys.sml that registers the MLRISC controls with the Controls
742       module.
743    
744    CM:
745    ---
746    
747      * One can now specify the lambda-split aggressiveness in init.cmi.
748    
749    ----------------------------------------------------------------------
750    Name: Allen Leung
751    Date: 2002/03/13 17:30:00 EST
752    Tag: leunga-20020313-x86-fp-unary
753    Description:
754    
755    Bug fix for:
756    
757    > leunga@weaselbane:~/Yale/tmp/sml-dist{21} bin/sml
758    > Standard ML of New Jersey v110.39.1 [FLINT v1.5], March 08, 2002
759    > - fun f(x,(y,z)) = Real.~ y;
760    > [autoloading]
761    > [autoloading done]
762    >       fchsl   (%eax), 184(%esp)
763    > Error: MLRisc bug: X86MCEmitter.emitInstr
764    >
765    > uncaught exception Error
766    >   raised at: ../MLRISC/control/mlriscErrormsg.sml:16.14-16.19
767    
768    The problem was that the code generator did not generate any fp registers
769    in this case, and the ra didn't know that it needed to run the X86FP phase to
770    translate the pseudo fp instruction.   This only happened with unary fp
771    operators in certain situations.
772    
773    ----------------------------------------------------------------------
774    Name: Matthias Blume
775    Date: 2002/03/13 14:00:00 EST
776    Tag: blume-20020313-overload-etc
777    Description:
778    
779    1. Added _overload as a synonym for overload for backward compatibility.
780       (Control.overloadKW must be true for either version to be accepted.)
781    
782    2. Fixed bug in install script that caused more things to be installed
783       than what was requested in config/targets.
784    
785    3. Made CM aware of the (_)overload construct so that autoloading
786       works.
787    
788    ----------------------------------------------------------------------
789    Name: Matthias Blume
790    Date: 2002/03/12 22:03:00 EST
791    Tag: blume-20020312-url
792    Description:
793    
794    Forgot to update BOOT and srcarchiveurl.
795    
796    ----------------------------------------------------------------------
797    Name: Matthias Blume
798    Date: 2002/03/12 17:30:00 EST
799    Tag: blume-20020312-version110392
800    Description:
801    
802    Yet another version number bump (because of small changes to the
803    binfile format).  Version number is now 110.39.2.  NEW BOOTFILES!
804    
805    Changes:
806    
807      The new pid generation scheme described a few weeks ago was overly
808      complicated.  I implemented a new mechanism that is simpler and
809      provides a bit more "stability":  Once CM has seen a compilation
810      unit, it keeps its identity constant (as long as you do not delete
811      those crucial CM/GUID/* files).  This means that when you change
812      an interface, compile, then go back to the old interface, and
813      compile again, you arrive at the original pid.
814    
815      There now also is a mechanism that instructs CM to use the plain
816      environment hash as a module's pid (effectively making its GUID
817      the empty string).  For this, "noguid" must be specified as an
818      option to the .sml file in question within its .cm file.
819      This is most useful for code that is being generated by tools such
820      as ml-nlffigen (because during development programmers tend to
821      erase the tool's entire output directory tree including CM's cached
822      GUIDs).  "noguid" is somewhat dangerous (since it can be used to locally
823      revert to the old, broken behavior of SML/NJ, but in specific cases
824      where there is no danger of interface confusion, its use is ok
825      (I think).
826    
827      ml-nlffigen by default generates "noguid" annotations.  They can be
828      turned off by specifying -guid in its command line.
829    
830    ----------------------------------------------------------------------
831    Name: Lal George
832    Date: 2002/03/12 12 14:42:36 EST
833    Tag: george-20020312-frequency-computation
834    Description:
835    
836    Integrated jump chaining and static block frequency into the
837    compiler. More details and numbers later.
838    
839    ----------------------------------------------------------------------
840    Name: Lal George
841    Date: 2002/03/11 11 22:38:53 EST
842    Tag: george-20020311-jump-chain-elim
843    Description:
844    
845    Tested the jump chain elimination on all architectures (except the
846    hppa).  This is on by default right now and is profitable for the
847    alpha and x86, however, it may not be profitable for the sparc and ppc
848    when compiling the compiler.
849    
850    The gc test will typically jump to a label at the end of the cluster,
851    where there is another jump to an external cluster containing the actual
852    code to invoke gc. This is to allow factoring of common gc invocation
853    sequences. That is to say, we generate:
854    
855            f:
856               testgc
857               ja   L1      % jump if above to L1
858    
859            L1:
860               jmp L2
861    
862    
863    After jump chain elimination the 'ja L1' instructions is converted to
864    'ja L2'. On the sparc and ppc, many of the 'ja L2' instructions may end
865    up being implemented in their long form (if L2 is far away) using:
866    
867            jbe     L3      % jump if below or equal to L3
868            jmp     L2
869         L3:
870            ...
871    
872    
873    For large compilation units L2  may be far away.
874    
875    
876    ----------------------------------------------------------------------
877    Name: Matthias Blume
878    Date: 2002/03/11 13:30:00 EST
879    Tag: blume-20020311-mltreeeval
880    Description:
881    
882    A functor parameter was missing.
883    
884    ----------------------------------------------------------------------
885    Name: Allen Leung
886    Date: 2002/03/11 10:30:00 EST
887    Tag: leunga-20020311-runtime-string0
888    Description:
889    
890       The representation of the empty string now points to a
891    legal null terminated C string instead of unit.  It is now possible
892    to convert an ML string into C string with InlineT.CharVector.getData.
893    This compiles into one single machine instruction.
894    
895    ----------------------------------------------------------------------
896  Name: Allen Leung  Name: Allen Leung
897  Date: 2002/03/10 23:55:00 EST  Date: 2002/03/10 23:55:00 EST
898  Tag: leunga-20020310-x86-call  Tag: leunga-20020310-x86-call

Legend:
Removed from v.1130  
changed lines
  Added in v.1279

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