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revision 710, Tue Oct 17 08:21:09 2000 UTC revision 959, Fri Oct 12 21:21:41 2001 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Allen Leung
17    Date: 2001/10/12 17:18:32 EDT 2001
18    Tag: leung-20011012-x86-printflowgraph
19    Description:
20    
21    X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
22    
23    ----------------------------------------------------------------------
24    Name: Lal George
25    Date: 2001/10/11 23:51:34 EDT
26    Tag: george-20011011-too-many-instrs
27    Description:
28    
29    The representation of a program point never expected to see more
30    than 65536 instructions in a basic block!
31    
32    ----------------------------------------------------------------------
33    Name: Lal George
34    Date: 2001/10/09 09:41:37 EDT
35    Tag: george-20011008-mlrisc-labels
36    Description:
37    
38    Changed the machine description files to support printing of
39    local and global labels in assembly code, based on host assembler
40    conventions.
41    
42    ----------------------------------------------------------------------
43    Name: Matthias Blume
44    Date: 2001/09/25 15:25:00 EDT
45    Tag: blume-20010925-exninfo
46    Description:
47    
48    I provided a non-hook implementation of exnName (at the toplevel) and
49    made the "dummy" implementation of exnMessage (at the toplevel) more
50    useful: if nothing gets "hooked in", then at least you are going to
51    see the exception name and a message indicating why you don't see more.
52    
53    [For the time being, programs that need exnMessage and want to use
54    ml-build should either use General.exnMessage (strongly recommended) or
55    refer to structure General at some other point so that CM sees a
56    static dependency.]
57    
58    [Similar remarks go for "print" and "use":  If you want to use their
59    functionality in stand-alone programs generated by ml-build, then use
60    TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
61    
62    ----------------------------------------------------------------------
63    Name: Matthias Blume
64    Date: 2001/09/20 17:28:00 EDT
65    Tag: blume-20010920-slowfp
66    Description:
67    
68    Allen says that x86-fast-fp is not safe yet, so I turned it off again...
69    
70    ----------------------------------------------------------------------
71    Name: Matthias Blume
72    Date: 2001/09/20 17:20:00 EDT
73    Tag: blume-20010920-canonicalpaths
74    Description:
75    
76    0. Updated the BOOT file (something that I forgot to do earlier).
77    
78    1. Small internal change to CM so that it avoids "/../" in filenames
79       as much as possible (but only where it is safe).
80    
81    2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
82       that arguments that contain delimiters are passed through correctly.
83       This change also means that all "special" arguments of the form
84       @SMLxxx... must come first.
85    
86    3. Changed install script to put relative anchor names for tool commands
87       into pathconfig.
88    
89    ----------------------------------------------------------------------
90    Name: Matthias Blume
91    >>>>>>> 1.169
92    Date: 2001/09/18 15:35:00 EDT
93    Tag: blume-20010918-readme11036
94    Description:
95    
96    Added README files.
97    
98    ----------------------------------------------------------------------
99    Name: Matthias Blume
100    Date: 2001/09/18 11:45:00 EDT
101    Tag: Release_110_36 (retag)
102    Description:
103    
104    Fixed mistake in config/preloads. Retagged as 110.36.
105    
106    ----------------------------------------------------------------------
107    Name: Matthias Blume
108    Date: 2001/09/18 09:40:00 EDT
109    Tag: Release_110_36_orig (tag changed)
110    Description:
111    
112    New version (110.36).  New bootfiles.
113    
114    ----------------------------------------------------------------------
115    Name: Matthias Blume
116    Date: 2001/09/14 16:15:00 EDT
117    Tag: blume-20010914-x86fastfp
118    Description:
119    
120    John committed some changes that Allen made, in particular a (hopefully)
121    correctly working version of the x86-fp module.
122    
123    I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
124    flag to "true".  Everything seems to compile to a fixpoint ok, and
125    "mandelbrot" speeds up by about 15%.
126    
127    ----------------------------------------------------------------------
128    Name: Matthias Blume
129    Date: 2001/09/13 11:20:00 EDT
130    Tag: blume-20010913-minimal
131    Description:
132    
133    1. Stefan Monnier's patch to fix a miscompilation problem that
134       was brought to light by John Reppy's work on Moby.
135    
136    2. Implemented a minimal "structure Compiler" that contains just
137       "version" and "architecture".  The minimal version will be
138       available when the full version is not.  This is for backward-
139       compatibility with code that wants to test Compiler.version.
140    
141    ----------------------------------------------------------------------
142    Name: Matthias Blume
143    Date: 2001/08/28 14:03:00 EDT
144    Tag: blume-20010828-ml-lex
145    Description:
146    
147    Fix for bug 1581, received from Neophytos Michael.
148    
149    ----------------------------------------------------------------------
150    Name: Matthias Blume
151    Date: 2001/08/27 11:20:00 EDT
152    Tag: blume-20010827-readme11035
153    Description:
154    
155    Fleshed out the README file for 110.35.
156    
157    ----------------------------------------------------------------------
158    Name: Matthias Blume
159    Date: 2001/08/24 17:10:00 EDT
160    Tag: Release_110_35
161    Description:
162    
163    New version number (110.35).  New bootfiles.
164    
165    ----------------------------------------------------------------------
166    Name: Lal George
167    Date: 2001/08/24 13:47:18 EDT 2001
168    Tag: george-20010824-MLRISC-graphs
169    Description:
170    
171     removed clusters from MLRISC completely and replaced with graphs.
172    
173    ----------------------------------------------------------------------
174    Name: Matthias Blume
175    Date: 2001/08/23 17:50:00 EDT
176    Tag: blume-20010823-toplevel
177    Description:
178    
179    - some reorganization of the code that implements various kinds of
180      environments in the compiler (static, dynamic, symbolic, combined)
181    - re-implemented the EnvRef module so that evalStream works properly
182      (if the stream contains references to "use", "CM.make", etc.)
183    - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
184    
185    ----------------------------------------------------------------------
186    Name: Matthias Blume
187    Date: 2001/08/20 15:50 EDT
188    Tag: blume20010820-slipup
189    Description:
190    
191    I forgot to commit a few files.  Here they are...
192    
193    ----------------------------------------------------------------------
194    Name: Matthias Blume
195    Date: 2001/08/20 15:35:00 EDT
196    Tag: blume-20010820-debugprof
197    Description:
198    
199    !!!! NEW BOOTFILES !!!!
200    
201    This is another round of reorganizing the compiler sources.  This
202    time the main goal was to factor out all the "instrumentation"
203    passes (for profiling and backtracing) into their own library.
204    The difficulty was to do it in such a way that it does not depend
205    on elaborate.cm but only on elabdata.cm.
206    
207    Therefore there have been further changes to both elaborate.cm and
208    elabdata.cm -- more "generic" things have been moved from the former
209    to the latter.  As a result, I was forced to split the assignment
210    of numbers indicating "primtyc"s into two portions: SML-generic and
211    SML/NJ-specific.  Since it would have been awkward to maintain,
212    I bit the bullet and actually _changed_ the mapping between these
213    numbers and primtycs.  The bottom line of this is that you need
214    a new set of bin- and bootfiles.
215    
216    I have built new bootfiles for all architectures, so doing a fresh
217    checkout and config/install.sh should be all you need.
218    
219    The newly created library's name is
220    
221        $smlnj/viscomp/debugprof.cm
222    
223    and its sources live under
224    
225        src/compiler/DebugProf
226    
227    ----------------------------------------------------------------------
228    Name: Matthias Blume
229    Date: 2001/08/15 17:15:00 EDT
230    Tag: blume-20010815-compreorg
231    Description:
232    
233    This is a first cut at reorganizing the CM libraries that make up the
234    core of the compiler.  The idea is to separate out pieces that could
235    be used independently by tools, e.g., the parser, the typechecker, etc.
236    
237    The current status is a step in this direction, but it is not quite
238    satisfactory yet.  Expect more changes in the future.
239    
240    Here is the current (new) organization...
241    
242        What used to be $smlnj/viscomp/core.cm is now divided into
243        six CM libraries:
244    
245             $smlnj/viscomp/basics.cm
246                           /parser.cm
247                           /elabdata.cm
248                           /elaborate.cm
249                           /execute.cm
250                           /core.cm
251    
252        The CM files for these libraries live under src/system/smlnj/viscomp.
253        All these libraries are proxy libraries that contain precisely
254        one CM library component.  Here are the locations of the components
255        (all within the src/compiler tree):
256    
257             Basics/basics.cm
258             Parse/parser.cm
259             ElabData/elabdata.cm
260             Elaborator/elaborate.cm
261             Execution/execute.cm
262             core.cm
263    
264         [This organization is the same that has been used already
265         for a while for the architecture-specific parts of the visible
266         compiler and for the old version of core.cm.]
267    
268         As you will notice, many source files have been moved from their
269         respective original locations to a new home in one of the above
270         subtrees.
271    
272         The division of labor between the new libraries is the following:
273    
274             basics.cm:
275                - Simple, basic definitions that pertain to many (or all) of
276                  the other libraries.
277             parser.cm:
278                - The SML parser, producing output of type Ast.dec.
279                - The type family for Ast is also defined and exported here.
280             elabdata.cm:
281                - The datatypes that describe input and output of the elaborator.
282                  This includes types, absyn, and static environments.
283             elaborator.cm:
284                - The SML/NJ type checker and elaborator.
285                  This maps an Ast.dec (with a given static environment) to
286                  an Absyn.dec (with a new static environment).
287                - This libraries implements certain modules that used to be
288                  structures as functors (to remove dependencies on FLINT).
289             execute.cm:
290                - Everything having to do with executing binary code objects.
291                - Dynamic environments.
292             core.cm:
293                - SML/NJ-specific instantiations of the elaborator and MLRISC.
294                - Top-level modules.
295                - FLINT (this should eventually become its own library)
296    
297    Notes:
298    
299    I am not 100% happy with the way I separated the elaborator (and its
300    data structures) from FLINT.  Two instances of the same problem:
301    
302        1. Data structures contain certain fields that carry FLINT-specific
303           information.  I hacked around this using exn and the property list
304           module from smlnj-lib.  But the fact that there are middle-end
305           specific fields around at all is a bit annoying.
306    
307        2. The elaborator calculates certain FLINT-related information.  I tried
308           to make this as abstract as I could using functorization, but, again,
309           the fact that the elaborator has to perform calculations on behalf
310           of the middle-end at all is not nice.
311    
312        3. Having to used exn and property lists is unfortunate because it
313           weakens type checking.  The other alternative (parameterizing
314           nearly *everything*) is not appealing, though.
315    
316    I removed the "rebinding =" warning hack because due to the new organization
317    it was awkward to maintain it.  As a result, the compiler now issues some of
318    these warnings when compiling init.cmi during bootstrap compilation. On
319    the plus side, you also get a warning when you do, for example:
320       val op = = Int32.+
321    which was not the case up to now.
322    
323    I placed "assign" and "deref" into the _Core structure so that the
324    code that deals with the "lazy" keyword can find them there.  This
325    removes the need for having access to the primitive environment
326    during elaboration.
327    
328    ----------------------------------------------------------------------
329    Name: Matthias Blume
330    Date: 2001/08/13
331    Tag: blume-20010813-closures
332    Description:
333    
334    This fix was sent to us by Zhong Shao.  It is supposed to improve the
335    performance of certain loops by avoiding needless closure allocation.
336    
337    ----------------------------------------------------------------------
338    Name: Lal George
339    Date: 2001/07/31 10:03:23 EDT 2001
340    Tag: george-20010731-x86-fmalloc
341    Description: Fixed bug in x86 calls
342    
343        There was a bug where call instructions would mysteriously
344        vanish. The call instruction had to be one that returned
345        a floating point value.
346    
347    ----------------------------------------------------------------------
348    Name: Lal George
349    Date: 2001/07/19 16:36:29 EDT 2001
350    Tag: george-20010719-simple-cells
351    Description:
352    
353    I have dramatically simplified the interface for CELLS in MLRISC.
354    
355    In summary, the cells interface is broken up into three parts:
356    
357      1. CellsBasis : CELLS_BASIS
358    
359            CellsBasis is a top level structure and common for all
360            architectures.  it contains the definitions of basic datatypes
361            and utility  functions over these types.
362    
363      2. functor Cells() : CELLS
364    
365            Cells generates an interface for CELLS that incorporates the
366            specific resources on the target architecture, such as the
367            presence of special register classes, their number and size,
368            and various useful substructures.
369    
370      3. <ARCH>CELLS
371    
372            e.g. SparcCells: SPARCCELLS
373    
374            <ARCH>CELLS usually contains additional bindings for special
375            registers  on the architecture, such as:
376    
377                    val r0 : cell           (* register zero *)
378                    val y : cell            (* Y register *)
379                    val psr : cell          (* processor status register *)
380                    ...
381    
382            The structure returned by applying the Cells functor is opened
383            in this interface.
384    
385    The main implication of all this is that the datatypes for cells is
386    split between CellsBasis and CELLS -- a fairly simple change for user
387    code.
388    
389    In the old scheme the CELLS interface had a definitional binding of
390    the form:
391    
392            signature CELLS = sig
393    
394               structure CellsBasis = CellsBasis
395    
396               ...
397    
398            end
399    
400    With all the sharing constraints that goes on in MLRISC, this old
401    design  quickly leads to errors such as:
402    
403            "structure definition spec inside of sharing ... "
404    
405    
406    and appears to require an unacceptable amount of sharing and where
407    constraint hackery.
408    
409    I think this error message (the interaction of definitional specs and
410    sharing) requires more explanation on our web page.
411    
412    ----------------------------------------------------------------------
413    Name: Matthias Blume
414    Date: 2001/07/19 15:00:00 EDT
415    Tag: blume-20010719-libreorg
416    Description:
417    
418    This update puts together a fairly extensive but straightforward change
419    to the way the libraries that implement the interactive system are
420    organized:
421    
422       The biggest change is the elimination of structure Compiler.  As a
423       replacement for this structure, there is now a CM library
424       (known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
425       that exports all the substructures of the original structure Compiler
426       directly.  So instead of saying Compiler.Foo.bar one now simply
427       says Foo.bar.  (The CM libraries actually export a collection of
428       structures that is richer than the collection of substructures of
429       structure Compiler.)
430    
431       To make the transition smooth, there is a separate library called
432       $smlnj/compiler/compiler.cm which puts together and exports the
433       original structure Compiler (or at least something very close to it).
434    
435       There are five members of the original structure Compiler
436       that are not exported directly but which instead became members
437       of a new structure Backend (described by signature BACKEND).  These are:
438       structure Profile (: PROFILE), structure Compile (: COMPILE), structure
439       Interact (: INTERACT), structure Machine (: MACHINE), and val
440       architecture (: string).
441    
442       Structure Compiler.Version has become structure CompilerVersion.
443    
444       Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
445       by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
446       or x86, respectively.
447       Each of these exports the same frontend structures that
448       $smlnj/compiler.cm exports.  But they do not have a structure Backend
449       and instead export some structure <Arch>Backend where <Arch> is Alpha32,
450       Hppa, PPC, Sparc, or X86, respectively.
451    
452       Library $smlnj/compiler/all.cm exports the union of the exports of
453       $smlnj/compiler/<arch>.cm
454    
455       There are no structures <Arch>Compiler anymore, use
456       $smlnj/compiler/<arch>.cm instead.
457    
458       Library host-compiler-0.cm is gone.  Instead, the internal library
459       that instantiates CM is now called cm0.cm.  Selection of the host
460       compiler (backend) is no longer done here but. (Responsibility for it
461       now lies with $smlnj/compiler/current.cm.  This seems to be more
462       logical.)
463    
464       Many individual files have been moved or renamed.  Some files have
465       been split into multiple files, and some "dead" files have been deleted.
466    
467    Aside from these changes to library organization, there are also changes
468    to the way the code itself is organized:
469    
470       Structure Binfile has been re-implemented in such a way that it no
471       longer needs any knowledge of the compiler.  It exclusively deals
472       with the details of binfile layout.  It no longer invokes the
473       compiler (for the purpose of creating new prospective binfile
474       content), and it no longer has any knowledge of how to interpret
475       pickles.
476    
477       Structure Compile (: COMPILE) has been stripped down to the bare
478       essentials of compilation.  It no longer deals with linking/execution.
479       The interface has been cleaned up considerably.
480    
481       Utility routines for dealing with linking and execution have been
482       moved into their own substructures.
483    
484       (The ultimate goal of these changes is to provide a light-weight
485       binfile loader/linker (at least for, e.g., stable libraries) that
486       does not require CM or the compiler to be present.)
487    
488    CM documentation has been updated to reflect the changes to library
489    organization.
490    
491    ----------------------------------------------------------------------
492    Name: Matthias Blume
493    Date: 2001/07/10 17:30:00 EDT
494    Tag: Release_110_34
495    Description:
496    
497    Minor tweak to 110.34 (re-tagged):
498    
499      - README.html file added to CVS repository
500      - runtime compiles properly under FreeBSD 3.X and 4.X
501    
502    ----------------------------------------------------------------------
503    Name: Matthias Blume
504    Date: 2001/07/10 17:30:00 EDT
505    Tag: Release_110_34
506    Description:
507    
508    New version number (110.34). New bootfiles.
509    
510    ----------------------------------------------------------------------
511    Name: Matthias Blume
512    Date: 2001/07/09 16:00:00 EDT
513    Tag: blume-20010709-more-varargs
514    Description:
515    
516    I changed the handling of varargs in ml-nlffigen again:
517    The ellipsis ... will now simply be ignored (with an accompanying warning).
518    
519    The immediate effect is that you can actually call a varargs function
520    from ML -- but you can't actually supply any arguments beyond the ones
521    specified explicitly.  (For example, you can call printf with its format
522    string, but you cannot pass additional arguments.)
523    
524    This behavior is only marginally more useful than the one before, but
525    it has the advantage that a function or, more importantly, a function
526    type never gets dropped on the floor, thus avoiding follow-up problems with
527    other types that refer to the offending one.
528    
529    ----------------------------------------------------------------------
530    Name: Matthias Blume
531    Date: 2001/07/09 11:25:00 EDT
532    Tag: blume-20010709-varargs
533    Description:
534    
535    1. ckit-lib.cm now exports structure Error
536    2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
537       with a warning accompanied by a source location.  Moreover, it
538       merely skips the offending function or type and proceeds with the
539       rest of its work.u  As a result, one can safely feed C code containing
540       "..." to ml-nlffigen.
541    3. There are some internal improvements to CM, providing slightly
542       more general string substitutions in the tools subsystem.
543    
544    ----------------------------------------------------------------------
545    Name: Matthias Blume
546    Date: 2001/06/27 15:10:00 EDT
547    Tag: blume-20010627-concur
548    Description:
549    
550    Fixed a small bug in CM's handling of parallel compilation.
551    (You could observe the bug by Control-C-interrupting an ordinary
552    CMB.make or CM.stabilize and then attaching some compile servers.
553    The result was that all of a sudden the previously interrupted
554    compilation would continue on its own.  This was because of
555    an over-optimization: CM did not bother to clean out certain queues
556    when no servers were attached "anyway", resulting in the contents
557    of these queues to grab control when new servers did get attached.)
558    
559    There is also another minor update to the CM manual.
560    
561    ----------------------------------------------------------------------
562    Name: Matthias Blume
563    Date: 2001/06/26 16:15:00 EDT
564    Tag: blume-20010626-cmdoc
565    Description:
566    
567    Minor typo fixed in CM manual (syntax diagram for libraries).
568    
569    ----------------------------------------------------------------------
570    Name: Matthias Blume
571    Date: 2001/06/25 22:55:00 EDT
572    Tag: blume-20010625-x86pc
573    Description:
574    
575    Fixed a nasty bug in the X86 assembly code that caused signal
576    handlers to fail (crash) randomly.
577    
578    ----------------------------------------------------------------------
579    Name: Matthias Blume
580    Date: 2001/06/25 12:05:00 EDT
581    Tag: blume-20010625-nlffigen
582    Description:
583    
584    This update fixes a number of minor bugs in ml-nlffigen as reported by
585    Nick Carter <nbc@andrew.cmu.edu>.
586    
587      1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
588      2. Default names for generated files are now derived from the name of
589         the C file *without its directory*.  In particular, this causes generated
590         files to be placed locally even if the C file is in some system directory.
591      3. Default names for generated signatures and structures are also derived
592         from the C file name without its directory.  This avoids silly things
593         like "structure GL/GL".
594         (Other silly names are still possible because ml-nlffigen does not do
595          a thorough check of whether generated names are legal ML identifiers.
596          When in doubt, use command line arguments to force particular names.)
597    
598    ----------------------------------------------------------------------
599    Name: Matthias Blume
600    Date: 2001/06/21 12:25:00 EDT
601    Tag: blume-20010621-eXene
602    Description:
603    
604    eXene now compiles and (sort of) works again.
605    
606    The library name (for version > 110.33) is $/eXene.cm.
607    
608    I also added an new example in src/eXene/examples/nbody.  See the
609    README file there for details.
610    
611    ----------------------------------------------------------------------
612    Name: Matthias Blume
613    Date: 2001/06/20 16:40:00 EDT
614    Tag: blume-20010620-cml
615    Description:
616    
617    CML now compiles and works again.
618    
619    Libraries (for version > 110.33):
620    
621      $cml/cml.cm            Main CML library.
622      $cml/basis.cm          CML's version of $/basis.cm.
623      $cml/cml-internal.cm   Internal helper library.
624      $cml/core-cml.cm       Internal helper library.
625      $cml-lib/trace-cml.cm  Tracing facility.
626      $cml-lib/smlnj-lib.cm  CML's version of $/smlnj-lib.cm
627    
628    The installer (config/install.sh) has been taught how to properly
629    install this stuff.
630    
631    ----------------------------------------------------------------------
632    Name: Matthias Blume
633    Date: 2001/06/19 17:55:00 EDT
634    Tag: blume-20010619-instantiate
635    Description:
636    
637    This un-breaks the fix for bug 1432.
638    (The bug was originally fixed in 110.9 but I broke it again some
639    time after that.)
640    
641    ----------------------------------------------------------------------
642    Name: Matthias Blume
643    Date: 2001/06/19 17:25:00 EDT
644    Tag: blume-20010619-signals
645    Description:
646    
647    This should (hopefully) fix the long-standing signal handling bug.
648    (The runtime system was constructing a continuation record with an
649    incorrect descriptor which would cause the GC to drop data on the floor...)
650    
651    ----------------------------------------------------------------------
652    Name: Matthias Blume
653    Date: 2001/06/15 15:05:00 EDT
654    Tag: blume-20010615-moresparc
655    Description:
656    
657    Here is a short late-hour update related to Sparc c-calls:
658    
659     -- made handling of double-word arguments a bit smarter
660    
661     -- instruction selection phase tries to collapse certain clumsily
662        constructed ML-Trees; typical example:
663    
664            ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
665    
666        This currently has no further impact on SML/NJ since mlriscGen does
667        not seem to generate such patterns in the first place, and c-calls
668        (which did generate them in the beginning) has meanwhile been fixed
669        so as to avoid them as well.
670    
671    ----------------------------------------------------------------------
672    Name: Matthias Blume
673    Date: 2001/06/15 15:05:00 EDT
674    Tag: blume-20010615-sparc
675    Description:
676    
677    The purpose of this update is to provide an implementation of NLFFI
678    on Sparc machines.
679    
680    Here are the changes in detail:
681    
682       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
683       the Sparc implementation of the c-calls API.
684       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
685       for accessing the ML frame.  Thus, we have a real frame pointer and
686       can freely modify %sp without need for an omit-frame-ptr phase.
687       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
688       this case.
689       * ml-nlffigen has been taught to produce code for different architectures
690       and calling conventions.
691       * In a way similar to what was done in the x86 case, the Sparc
692       backend uses its own specific extension to mltree.  (For example,
693       it needs to be able to generate UNIMP instructions which are part
694       of the calling convention.)
695       * ml-nlffi-lib was reorganized to make it more modular (in particular,
696       to make it easier to plug in new machine- and os-dependent parts).
697    
698    There are some other fairly unrelated bug fixes and cleanups as well:
699    
700       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
701       that they properly share their libraries with existing SML/NJ libraries.
702       * I fixed a minor cosmetic bug in CM, supressing certain spurious
703       follow-up error messages.
704       * Updates to CM/CMB documentation.
705    
706    TODO items:
707    
708       * MLRISC should use a different register as its asmTemp on the Sparc.
709         (The current %o2 is a really bad choice because it is part of the
710         calling conventions, so things might interfere in unexpected ways.)
711    
712    ----------------------------------------------------------------------
713    Name: Matthias Blume
714    Date: 2001/06/07
715    Tag: blume-20010607-calls
716    Description:
717    
718    A number of internal changes related to C calls and calling conventions:
719    
720    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
721       number of bytes popped implicitly (by the callee).  In most cases
722       this field is 0 but on x86/win32 it is some non-zero value.  This
723       is information provided for the benefit of the "omit-frameptr" pass.
724    2. The CALL instruction on the x86 carries a similar "pops" field.
725       The instruction selection phase copies its value from the ML-Tree
726       CALL statement.
727    3. On all other architectures, the instruction selection phase checks
728       whether "pops=0" and complains if not.
729    4. The c-calls implementation for x86 now accepts two calling conventions:
730       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
731       up after the call and pops is set to 0.  For "stdcall", the caller
732       does nothing, leaving the cleanup to the callee; pops is set to
733       the number of bytes that were pushed onto the stack.
734    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
735       distinguish between "ccall" and "stdcall".
736    6. The UNIMP instruction has been added to the supported Sparc instruction
737       set. (This is needed for implementing the official C calling convention
738       on this architecture.)
739    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
740       work with the latest CM.
741    
742    ----------------------------------------------------------------------
743    Name: Matthias Blume
744    Date: 2001/06/05 15:10:00 EDT
745    Tag: blume-20010605-cm-index
746    Description:
747    
748    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
749    
750    1. CM can now generate "index files".  These are human-readable files
751       that list on a per-.cm-file basis each toplevel symbol defined or
752       imported.  The location of the index file for
753       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
754       To enable index-file generation, set CM.Control.generate_index to true
755       or export an environment-symbol: export CM_GENERATE_INDEX=true.
756    
757       The CM manual has been updated accordingly.
758    
759    2. I made some slight modifications to the c-calls API in MLRISC.
760    
761         a) There is now a callback to support saving/restoring of
762            dedicated but caller-save registers around the actual call
763            instruction.
764         b) One can optionally specify a comment-annotation for the
765            call instruction.
766    
767    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
768       (For example, the comment annotation shows the C prototype of
769        the function being called.)
770    
771    ----------------------------------------------------------------------
772    Name: Matthias Blume
773    Date: 2001/06/01 13:30:00 EDT
774    Tag: blume-20010601-nlffi-cleanup
775    Description:
776    
777    This is mostly a cleanup of MLFFI stuff:
778    
779       - some signature files have been put into a more exposed place
780       - the ugly 'f type parameter is gone (simplifies types tremendously!)
781       - ml-nlffigen changed accordingly
782       - tutorial updated
783    
784    Other changes:
785    
786       - author's affiliation in CM manual(s) updated
787       - some more recognized keywords added to Allen's sml.sty
788    
789    ----------------------------------------------------------------------
790    Name: Matthias Blume
791    Date: 2001/05/25 15:30:00 EDT
792    Tag: blume-20010525-iptr
793    Description:
794    
795      - put the official 110.33-README (as it appears on the ftp server) under
796        CVS
797      - fixed a small bug related to incomplete pointer types in
798        ml-nlffigen
799      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
800        (it does not need the 'f type parameter)
801    
802    ----------------------------------------------------------------------
803    Name: Matthias Blume
804    Date: 2001/05/23 14:30:00 EDT
805    Tag: Release_110_33
806    Description:
807    
808    New version number (110.33).  New bootfiles.
809    
810    ----------------------------------------------------------------------
811    Name: Matthias Blume
812    Date: 2001/05/22 18:06:00 EDT
813    Tag: blume-20010522-targets
814    Description:
815    
816    Made install.sh use file config/targets.customized if it exists, falling
817    back to config/targets if it doesn't.  This way one can have a customized
818    version of the targets file without touching the "real thing", thus
819    eliminating the constant fear of accidentally checking something bogus
820    back into the CVS repository...  (File config/targets.customized must
821    not be added to the repository!)
822    
823    ----------------------------------------------------------------------
824    Name: Matthias Blume
825    Date: 2001/05/22 16:30:00 EDT
826    Tag: blume-20010522-minitut
827    Description:
828    
829    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
830       struct returns.
831    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
832       incomplete, preliminary documentation for NLFFI.
833    
834    ----------------------------------------------------------------------
835    Name: Matthias Blume
836    Date: 2001/05/14 11:30:00 EDT
837    Tag: blume-20010514-script
838    Description:
839    
840    Some bugs in install script fixed.
841    
842    In addition to that I also made a slight change to the NLFFI API:
843    Functors generated by ml-nlffigen now take the dynamic library as a
844    straight functor argument, not as a suspended one.  (The original
845    functor code used to force the suspension right away anyway, so there
846    was nothing gained by this complication of the interface.)
847    
848    ----------------------------------------------------------------------
849    Name: Matthias Blume
850    Date: 2001/05/11 14:35:00 EDT
851    Tag: blume-20010511-ml-nlffi
852    Description:
853    
854    I finally took the plunge and added my new FFI code to the main
855    repository.  For x86-linux it is now ready for prime-time.
856    
857    There are two new subdirectories of "src":
858    
859      - ml-nlffi-lib:
860           The utility library for programs using the FFI interface.
861           Here is the implementation of $/c.cm and its associated low-level
862           partners $/c-int.cm and $/memory.cm.
863      - ml-nlffigen:
864           A stand-alone program for generating ML glue code from C source
865           code.
866    
867    Building ml-nlffigen requires $/ckit-lib.cm.
868    
869    The config/install.sh script has been updates to do the Right Thing
870    (hopefully).
871    
872    Notice that the source tree for the C-Kit will not be put under "src"
873    but directly under the installation root directory.  (This is the
874    structure that currently exists on the CVS server when you check out
875    module "sml".)  Fortunately, config/install.sh knows about this oddity.
876    
877    Bugs: No documentation yet.
878    
879    ----------------------------------------------------------------------
880    Name: Matthias Blume
881    Date: 2001/05/09 16:35:00 EDT
882    Tag: blume-20010509-cpscontract
883    Description:
884    
885    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
886    wrapper/unwrapper elimination did not decrement usage counts and some
887    dead variables got overlooked by the dead-up logic.)
888    
889    ----------------------------------------------------------------------
890    Name: Lal George
891    Date: 2001/05/08  17:26:09 EDT
892    Tag: george-20010508-omit-frameptr
893    Description:
894    
895    Changes to implement the omit-frame-pointer optimization to support
896    raw C calls. For now, there is only support on the Intel x86, but
897    other architectures will follow as more experience is gained with this.
898    
899    
900    ----------------------------------------------------------------------
901    Name: Matthias Blume
902    Date: 2001/05/07 14:40:00 EDT
903    Tag: blume-20010507-proxies
904    Description:
905    
906    I made into "proxy libraries" all libraries that qualify for such a
907    change.  (A qualifying library is a library that has another library or
908    groups as its sole member and repeats that member's export list
909    verbatim.  A proxy library avoids this repetition by omitting its export
910    list, effectively inheriting the list that its (only) member exports.
911    See the CM manual for more explanation.)
912    The main effect is that explicit export lists for these libraries
913    do not have to be kepts in sync, making maintenance a bit easier.
914    
915    I also added copyright notices to many .cm-files.
916    
917    Last but not least, I made a new set of bootfiles.
918    
919    ----------------------------------------------------------------------
920    Name: Matthias Blume
921    Date: 2001/05/04 17:00:00 EDT
922    Tag: blume-20010504-cm-lsplit
923    Description:
924    
925    0. John merged pending changes to $/smlnj-lib.cm
926    
927    1. Allen's previous change accidentally backed out of one of Lal's
928       earlier changes.  I undid this mistake (re-introducing Lal's change).
929    
930    2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
931       within the compiler where applicable.  There is some code simplification
932       because of that.
933    
934    3. The "split" phase (in FLINT) is now part of the default list of phases.
935       Compiler.Control.LambdaSplitting.* can be used to globally control the
936       lambda-splitting (cross-module-inlining) engine.  In addition to that,
937       it can now also be controlled on a per-source basis: CM has been taught
938       a new tool parameter applicable to ML source files.
939    
940       - To turn lambda-splitting off completely:
941            local open Compiler.Control.LambdaSplitting in
942                val _ = set Off
943            end
944       - To make "no lambda-splitting" the global default (but allow per-source
945         overriding); this is the initial setting:
946            local open Compiler.Control.LambdaSplitting in
947                val _ = set (Default NONE)
948            end
949       - To make "lambda-splitting with aggressiveness a" the global default
950         (and allow per-source overriding):
951            local open Compiler.Control.LambdaSplitting in
952                val _ = set (Default (SOME a))
953            end
954    
955       - To turn lambda-splitting off for a given ML souce file (say: a.sml)
956         write (in the respective .cm-file):
957            a.sml (lambdasplitting:off)
958       - To turn lambda-splitting for a.sml on with minimal aggressiveness:
959            a.sml (lambdasplitting:on)
960       - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
961         <a> is a decimal non-negative integer):
962            a.sml (lambdasplitting:<a>)
963       - To turn lambda-splitting for a.sml on with maximal aggressiveness:
964            a.sml (lambdasplitting:infinity)
965       - To use the global default for a.sml:
966            a.sml (lambdasplitting:default)
967         or simply
968            a.sml
969    
970    ----------------------------------------------------------------------
971    Name: Allen Leung
972    Date: 2001/05/04 01:57:00 EDT
973    Tag: leunga-20010504-sync
974    Description:
975    
976      MLRISC features.
977    
978      1. Fix to CMPXCHG instructions.
979      2. Changed RA interface to allow annotations in callbacks.
980      3. Added a new method to the stream interface to allow annotations updates.
981    
982    ----------------------------------------------------------------------
983    Name: Matthias Blume
984    Date: 2001/05/01 11:45:00 EDT
985    Tag: blume-20010501-pcedittmp
986    Description:
987    
988    Changed install.sh to use the current working directory instead of
989    /usr/tmp for a temporary file (pcedittmp).  The previous choice
990    of /usr/tmp caused trouble with MacOS X because of file premission
991    problems.
992    
993    ----------------------------------------------------------------------
994    Name: Matthias Blume
995    Date: 2001/04/20 11:10:00 EDT
996    Tag: blume-20010420-inMLflag
997    Description:
998    
999     - added vp_limitPtrMask to vproc-state.h
1000       (for use by the raw-C-calls mechanism to implement proper interrupt
1001        handling)
1002     - made the ML compiler aware of various data-structure offsets so it
1003       can generate code for accessing the vp_inML flag and vp_limitPtrMask
1004     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
1005       raw C-calls
1006    
1007    ----------------------------------------------------------------------
1008    Name: Lal George
1009    Date: 2001/04/20 09:15:28 EDT
1010    Tag: george-20010420-macosX
1011    Description:
1012    
1013     - Changes to port to Mac OS X; Darwin.
1014    
1015     - In the process I found that sqrt was broken on the PPC, because the
1016       fsqrt instruction is not implemented.
1017    
1018    ----------------------------------------------------------------------
1019    Name: Matthias Blume
1020    Date: 2001/04/18 12:45:00 EDT
1021    Tag: blume-20010418-ccalls
1022    Description:
1023    
1024     - fixed two off-by-4 errors in the x86-specific c-calls implementation
1025       (this bug prevented structure arguments containing pointers from being
1026        passed correctly)
1027     - changed the raw-C-call code in mlriscGen.sml in such a way that
1028       structure arguments are represented as a pointer to the beginning
1029       of the structure (instead of having a series of synthesized arguments,
1030       one for each structure member)
1031    
1032     - made makeml script's verbosity level configurable via environment
1033       variable (MAKEML_VERBOSITY)
1034    
1035     - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
1036       in rawmem-x86.sml; we are now using the real thing
1037    
1038    ----------------------------------------------------------------------
1039    Name: Matthias Blume
1040    Date: 2001/03/22 16:25:00 EST
1041    Tag: blume-20010322-bootfiles
1042    Description:
1043    
1044    Created a new set of bootfiles (for your automatic installation convenience).
1045    
1046    ----------------------------------------------------------------------
1047    Name: Matthias Blume
1048    Date: 2001/03/22 15:10:00 EST
1049    Tag: blume-20010322-rawmem-parcm
1050    Description:
1051    
1052    1. All "raw memory access" primitives for the new FFI are implemented now
1053       (at least on the x86).
1054    2. Some further cleanup of CM's parallel make mechanism.
1055    
1056    ----------------------------------------------------------------------
1057    Name: Matthias Blume
1058    Date: 2001/03/19 17:53:00 EST
1059    Tag: blume-20010319-parallel
1060    Description:
1061    
1062    Parallel make (using compile servers) now works again.
1063    
1064    To this end, CM.stabilize and CMB.make have been modified to work in
1065    two passes when compile servers are attached:
1066       1. Compile everything, do not perform stabilization; this pass
1067          uses compile servers
1068       2. Stabilize everything; this pass does not use compile servers
1069    If there are no compile servers, the two passes are combined into one
1070    (as before).  Splitting the passes increases the inherent parallelism
1071    in the dependency graph because the entire graph including all
1072    libraries is available at the same time.  This, in turn, improves
1073    server utilization.  The downside is that the master process will
1074    have to do some extra work after compilation is done (because for
1075    technical reasons it must re-read all the binfiles during stabilization).
1076    
1077    ----------------------------------------------------------------------
1078    Name: Matthias Blume
1079    Date: 2001/03/16 12:22:00 EST
1080    Tag: blume-20010316-bootfiles
1081    Description:
1082    
1083    Created a new set of bootfiles (for your automatic installation convenience).
1084    
1085    ----------------------------------------------------------------------
1086    Name: Matthias Blume
1087    Date: 2001/03/16 11:00:00 EST
1088    Tag: blume-20010316-MLTREE-fixup
1089    Description:
1090    
1091    This is a minor fixup for an (untagged) earlier commit by Allen.
1092    (A file was missing).
1093    
1094    ----------------------------------------------------------------------
1095    Name: Allen Leung
1096    Date: Mon Mar  5 18:54:57 EST 2001
1097    Tag: leunga-20010305-cut-support
1098    
1099    1. New support for alternative control-flow in MLTREE.
1100       Currently we support
1101    
1102          FLOW_TO(CALL ...., [k1,...,kn])
1103    
1104       This is needed for 'cuts to' in C-- and try/handle-like constructs
1105       in Moby
1106    
1107       New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
1108    
1109    2. Register Allocator
1110    
1111       Changes in interface [from Fermin, John]
1112    
1113    3. Alpha 8-bit SLL support [Fermin]
1114    
1115    4. All architectures
1116    
1117       A new module (ClusterExpandCopies) for expanding parallel copies.
1118    
1119    ----------------------------------------------------------------------
1120    Name: Allen Leung
1121    Date: 2001/02/27 23:07:00 EST
1122    Tag: leunga-20010227-minor-stuff
1123    
1124    1. Alpha bug fix for CMOVNE
1125    2. Handle mltree COND(..,FCMP ...,...)
1126    3. Bug fix in simplifier
1127    
1128    ----------------------------------------------------------------------
1129    Name: Matthias Blume
1130    Date: 2001/01/30 17:50:00 EST
1131    Tag: blume-20010130-sync
1132    Description:
1133    
1134    This is just a minor update to sync my devel branch with the main brach.
1135    The only visible change is the addition of some README files.
1136    
1137    ----------------------------------------------------------------------
1138    Name: Matthias Blume
1139    Date: 2001/01/12 23:30:00 JST
1140    Tag: blume-20010112-bootfiles
1141    Description:
1142    
1143    Made a new set of bootfiles that goes with the current state of the
1144    repository.
1145    
1146    ----------------------------------------------------------------------
1147    Name: Matthias Blume
1148    Date: 2001/01/12 21:20:00 JST
1149    Tag: blume-20010112-sync
1150    Description:
1151    
1152    I am just flushing out some minor changes that had accumulated in
1153    my private branch in order to sync with the main tree.  (This is
1154    mainly because I had CVS trouble when trying to merge _into_ my
1155    private branch.)
1156    
1157    Most people should be completely unaffected by this.
1158    
1159    ----------------------------------------------------------------------
1160    Name: Allen Leung
1161    Date: Thu Jan 11 21:03:00 EST 2001
1162    Tag: leunga-20010111-labexp=mltree
1163    Description:
1164    
1165    1.  Removed the type LabelExp and replace it by MLTree.
1166    2.  Rewritten mltree-simplify with the pattern matcher tool.
1167    3.  There were some bugs in alpha code generator which would break
1168        64-bit code generation.
1169    4.  Redo the tools to generate code with the
1170    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
1171        are now generated by perl scripts.
1172    
1173    ----------------------------------------------------------------------
1174    Name: Matthias Blume
1175    Date: 2001/01/10 21:55:00 JST
1176    Tag: blume-20010110-rcc
1177    Description:
1178    
1179    The RCC stuff now seems to work (but only on the x86).
1180    This required hacking of the c-calls interface (and -implementation) in
1181    MLRISC.
1182    
1183    Normal compiler users should be unaffected.
1184    
1185    ----------------------------------------------------------------------
1186    Name: Matthias Blume
1187    Date: 2001/01/09 01:20:00 JST
1188    Tag: blume-20010109-rcc
1189    Description:
1190    
1191    This is a fairly big patch, flushing out a large number of pending
1192    changes that I made to my development copy over the last couple of days.
1193    
1194    Of practical relevance at this moment is a workaround for a pickling
1195    bug that Allen ran into the other day.  The cause of the bug itself is
1196    still unknown and it might be hard to fix it properly, but the
1197    workaround has some merits of its own (namely somewhat reducing pickling
1198    overhead for certain libraries).  Therefore, I think this solution should
1199    be satisfactory at this time.
1200    
1201    The rest of the changes (i.e., the vast majority) has to do with my
1202    ongoing efforts of providing direct support for C function calls from
1203    ML.  At the moment there is a new primop "RAW_CCALL", typing magic
1204    in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
1205    case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
1206    translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
1207    handle RCC.
1208    
1209    The last part (the changes to mlriscGen.sml) are still known to be
1210    wrong on the x86 and not implemented on all other architectures.  But
1211    the infrastructure is in place. I had to change a few functor
1212    signatures in the backend to be able to route the CCalls interface
1213    from MLRISC there, and I had to specialize the mltree type (on the
1214    x86) to include the necessary extensions. (The extensions themselves
1215    were already there and redy to go in MLRISC/x86).
1216    
1217    Everything should be very happy as soon as someone helps me with
1218    mlriscGen.sml...
1219    
1220    In any case, nothing of this should matter to anyone as long as the
1221    new primop is not being used (which is going to be the case unless you
1222    find it where I hid it :). The rest of the compiler is completely
1223    unaffected.
1224    
1225    ----------------------------------------------------------------------
1226    Name: Matthias Blume
1227    Date: 2001/01/05 00:30:00 JST
1228    Tag: blume-20010105-primops
1229    Description:
1230    
1231    Added some experimental support for work that I am doing right now.
1232    These changes mostly concern added primops, but there is also a new
1233    experimental C library in the runtime system (but currently not enabled
1234    anywhere except on Linux/X86).
1235    
1236    In the course of adding primops (and playing with them), I discovered that
1237    Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
1238    broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
1239    To recover, I made type information in INL_PRIM mandatory and changed
1240    prim.sml as well as built-in.sml accordingly.  The InLine structure now
1241    has complete, correct type information (i.e., no bottom types).
1242    
1243    Since all these changes mean that we need new binfiles, I also bumped the
1244    version number to 110.32.1.
1245    
1246    ----------------------------------------------------------------------
1247    Name: Matthias Blume
1248    Date: 2000/12/30 22:10:00 JST
1249    Tag: blume-20001230-various
1250    Description:
1251    
1252    Added proxy libraries for MLRISC and let MLRISC libraries refer
1253    to each other using path anchors.  (See CM manual for explanation.)
1254    
1255    Updated CM documentation.
1256    
1257    Fixed some bugs in CM.
1258    
1259    Implemented "proxy" libraries (= syntactic sugar for CM).
1260    
1261    Added "-quiet" option to makeml and changed runtime system accordingly.
1262    
1263    Added cleanup handler for exportML to reset timers and compiler stats.
1264    
1265    ----------------------------------------------------------------------
1266    Name: Lal George
1267    Date: 2000/12/22 22:22:58 EST 2000
1268    Tag: Release_110_32
1269    Description:
1270    
1271            Infinite precision used throughout MLRISC.
1272            see MLRISC/mltree/machine-int.sig
1273    
1274    ----------------------------------------------------------------------
1275    Name: Matthias Blume
1276    Date: 2000/12/22 23:16:00 JST
1277    Tag: blume-20001222-warn
1278    Description:
1279    
1280    Corrected wording and formatting of some CM warning message which I
1281    broke in my previous patch.
1282    
1283    ----------------------------------------------------------------------
1284    Name: Matthias Blume
1285    Date: 2000/12/22 21:20:00 JST
1286    Tag: blume-20001222-anchorenv
1287    Description:
1288    
1289    Fixed CM's handling of anchor environments in connection with CMB.make.
1290    
1291    ----------------------------------------------------------------------
1292    Name: Matthias Blume
1293    Date: 2000/12/22 13:15:00 JST
1294    Tag: blume-20001222-cleanup
1295    Description:
1296    
1297    Removed src/cm/ffi which does not (and did not) belong here.
1298    
1299    ----------------------------------------------------------------------
1300    Name: Matthias Blume
1301    Date: 2000/12/21 23:55:00 JST
1302    Tag: blume-20001221-exn
1303    Description:
1304    
1305    Probably most important: CM no longer silently swallows all exceptions
1306    in the compiler.
1307    Plus: some other minor CM changes.  For example, CM now reports some
1308    sizes for generated binfiles (code, data, envpickle, lambdapickle).
1309    
1310    ----------------------------------------------------------------------
1311    Name: Matthias Blume
1312    Date: 2000/12/15 00:01:05 JST
1313    Tag: blume-20001215-dirtool
1314    Description:
1315    
1316    - "dir" tool added.
1317    - improvements and cleanup to Tools structure
1318    - documentation updates
1319    
1320    ----------------------------------------------------------------------
1321    Name: Allen Leung
1322    Date: Thu Dec 14 03:45:24 EST 2000
1323    Description:
1324    Tag:  leunga-20001214-int-inf
1325    Description:
1326    
1327       In IntInf, added these standard functions, which are missing from our
1328    implementation:
1329    
1330        andb : int * int -> int
1331        xorb : int * int -> int
1332        orb  : int * int -> int
1333        notb : int -> int
1334         <<   : int * word -> int
1335        ~>>  : int * word -> int
1336    
1337       Not tested, I hope they are correct.
1338    
1339    ----------------------------------------------------------------------
1340    Name: Allen Leung
1341    Date: Fri Dec  8 19:23:26 EST 2000
1342    Description:
1343    Tag:  leunga-20001208-nowhere
1344    Description:
1345    
1346      Slight improvements to the 'nowhere' tool to handle OR-patterns,
1347    to generate better error messages etc.  Plus a brief manual.
1348    
1349    ----------------------------------------------------------------------
1350    Name: Lal George
1351    Date: 2000/12/08 09:54:02 EST 2000
1352    Tag: Release_110_31
1353    Description:
1354    
1355    - Version 110.31
1356    ----------------------------------------------------------------------
1357    Name: Allen Leung
1358    Date: Thu Dec  7 22:01:04 EST 2000
1359    Tag:  leunga-20001207-cell-monster-hack
1360    Description:
1361    
1362    Major MLRISC internal changes.  Affect all clients.
1363    Summary:
1364    
1365    1.  Type CELLS.cell = int is now replaced by a datatype.
1366        As a result, the old regmap is now gone.  Almost all interfaces
1367        in MLRISC change as a consequence.
1368    
1369    2.  A new brand version of machine description tool (v3.0) that generates
1370        modules expecting the new interface.  The old version is removed.
1371    
1372    3.  The RA interface has been further abstracted into two new functors.
1373        RISC_RA and X86RA.  These functors have much simpler interfaces.
1374        [See also directory MLRISC/demo.]
1375    
1376    4.  Some other new source->source code generation tools are available:
1377    
1378        a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
1379        b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
1380           I use this tool to generate the peephole optimizers---with the new
1381           cell type changes, peephole rules are becoming difficult to write
1382           without conditional pattern matching.
1383    
1384    5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
1385        cover the entire MLRISC source tree so many things broke.
1386    
1387    6.  CM files have been moved to the subdirectory MLRISC/cm.
1388        They are moved because there are a lot of them and they clutter up the
1389        root dir.
1390    
1391    7.  More detailed documentation to come...
1392    
1393        NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
1394        a makeml -rebuild first.  This is because of other other
1395        changes that Matthias has made (see below).
1396    
1397    
1398    ----------------------------------------------------------------------
1399    Name: Matthias Blume
1400    Date: 2000/11/30 23:12:00 JST
1401    Tag: blume-20001130-filereorg
1402    Description:
1403    
1404    Some manual updates and some file reorganizations in CM.
1405    
1406    ----------------------------------------------------------------------
1407    Name: Matthias Blume
1408    Date: 2000/11/24 17:45:00 JST
1409    Tag: blume-20001124-link
1410    Description:
1411    
1412    Drastically improved link traversal code for the case that the dynamic
1413    value was already loaded at bootstrap time.  As a result, CM and CMB
1414    now both load blazingly fast -- even on a very slow machine.  Also,
1415    memory consumption has been further reduced by this.
1416    
1417    Warning: The format of the PIDMAP file has changed.  THerefore, to
1418    bootstrap you have to do this:
1419    
1420    1. Run CMB.make
1421    2. Make a symbolic link for the boot directory:
1422         ln -s sml.boot.ARCH-OS xxx
1423    3. "Rebuild" the boot directory:
1424         ./makeml -boot xxx -rebuild sml ; rm xxx
1425    4. Boot normally:
1426          ./makeml
1427    
1428    ----------------------------------------------------------------------
1429    Name: Matthias Blume
1430    Date: 2000/11/21 21:20:00 JST
1431    Tag: blume-20001121-tools
1432    Description:
1433    
1434    Continued hacking on autoloading problem -- with success this time.
1435    Also changed tool-plugin mechanism.  See new CM manual.
1436    
1437    ----------------------------------------------------------------------
1438    Name: Matthias Blume
1439    Date: 2000/11/19 14:30:00 JST
1440    Tag:  blume-20001119-autoload
1441    Description:
1442    
1443    Some hacking to make autoloading faster.  Success for CMB, no success
1444    so far for CM.  There is a reduced structure CM' that autoloads faster.
1445    (This is a temporary, non-documented hack to be eliminated again when
1446    the general problem is solved.)
1447    
1448    ----------------------------------------------------------------------
1449    Name: Matthias Blume
1450    Date: 2000/11/17 14:10:00 JST
1451    Tag: blume-20001117-pickle-lib
1452    Description:
1453    
1454    1. Eliminated comp-lib.cm
1455    2. Made pickle-lib.cm
1456    3. Eliminated all uses of intset.sml (from comp-lib.cm)
1457    4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
1458       equivalent constructs from smlnj-lib.cm (INtHashTable).
1459    5. Point 4. also goes for those uses of intmap.* in MLRISC.
1460       Duplicated intmap modules thrown out.
1461    6. Hunted down all duplicated SCC code and replaced it with
1462       equivalent stuff (GraphSCCFn from smlnj-lib.cm).
1463    7. Rewrote Feedback module.
1464    8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
1465       should be thrown out and equivalent modules from smlnj-lib.cm
1466       should be used (IntRedBlackSet, IntListSet, ...).
1467    
1468    Confirmed that compiler compiles to fixpoint.
1469    
1470    ----------------------------------------------------------------------
1471    Name: Allen Leung
1472    Date: 2000/11/10 18:00:00
1473    Tag: leunga-20001110-new-x86-fp
1474    
1475    A new x86 floating point code generator has been added.
1476    By default this is turned off.  To turn this on, do:
1477    
1478        CM.autoload "$smlnj/compiler.cm";
1479        Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
1480    
1481    Changes:
1482    
1483    1.  Changed FTAN to FPTAN so that the assembly output is correct.
1484    2.  Changed the extension callback for FTANGENT to generate:
1485    
1486              fptan
1487              fstp  %st(0)
1488        instead of
1489              fptan
1490              fstpl ftempmem
1491    
1492    3.  Numerous assembly fixes for x86.
1493    
1494    5.  Cleaned up the machine code output module x86/x86MC.sml and added
1495        support for a whole bunch of instructions and addressing modes:
1496    
1497          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
1498          faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
1499          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
1500          fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
1501          fxch %st(n)
1502          fld %st(n)
1503          fst %st(n)
1504          fst mem
1505          fstp %st(n)
1506          fucom %st(n)
1507          fucomp %st(n)
1508    
1509        All these are now generated when the fast fp mode is turned on.
1510    
1511    6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
1512    
1513    ----------------------------------------------------------------------
1514    Name: Matthias Blume
1515    Date: 2000/11/09 11:20:00 JST
1516    Tag: blume-20001109-scc
1517    Description:
1518    
1519    Eliminated some code duplication:
1520    
1521    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
1522       (Otherwise the functor is useless.)
1523    2. Used GraphSCCFn where SCCUtilFun was used previously.
1524    3. Got rid of SCCUtilFun (in comp-lib.cm).
1525    
1526    ----------------------------------------------------------------------
1527    Name: Lal George
1528    Date: 2000/11/06 09:02:21 EST 2000
1529    Tag: Release_110_30
1530    Description:
1531    
1532    - Version 110.30
1533    ----------------------------------------------------------------------
1534    Name: Matthias Blume
1535    Date: 2000/11/04 14:45:00
1536    Tag: blume-20001104-mlbuild
1537    Description:
1538    
1539    - Made ml-build faster on startup.
1540    - Documentation fixes.
1541    
1542    ----------------------------------------------------------------------
1543    Name: Matthias Blume
1544    Date: 2000/11/02 17:00:00 JST
1545    Tag: blume-20001102-condcomp
1546    Description:
1547    
1548    - Small tweaks to pickler -- new BOOTFILES!
1549    - Version bumped to 110.29.2.
1550    - Added conditional compilation facility to init.cmi (see comment there).
1551    ----------------------------------------------------------------------
1552    Name: Allen Leung
1553    Date: 2000/10/23 19:31:00
1554    Tag: leunga-20001023-demo-ra
1555    
1556    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
1557    2. Test programs for the graph library updated
1558    3. Some new MLRISC demo programs added
1559    
1560    ----------------------------------------------------------------------
1561    Name: Matthias Blume
1562    Date: 2000/08/31 22:15:00 JST
1563    Tag: blume-20001017-errmsg
1564    Description:
1565    
1566    More error message grief: Where there used to be no messages, there
1567    now were some that had bogus error regions.  Fixed.
1568    
1569    ----------------------------------------------------------------------
1570  Name: Matthias Blume  Name: Matthias Blume
1571  Date: 2000/08/31 17:30:00 JST  Date: 2000/08/31 17:30:00 JST
1572  Tag: blume-20001017-v110p29p1  Tag: blume-20001017-v110p29p1
# Line 1511  Line 3065 
3065       elaborator). There were a lot of changes during my "linkpath" trials       elaborator). There were a lot of changes during my "linkpath" trials
3066       that could have been reverted to their original state but weren't.       that could have been reverted to their original state but weren't.
3067       Please, don't be too harsh on me for messing with this code a bit more       Please, don't be too harsh on me for messing with this code a bit more
3068       than what was strictly necessary...  (I _did_ resist the tempation       than what was strictly necessary...  (I _did_ resist the temptation
3069       of doing any "global reformatting" to avoid an untimely death at       of doing any "global reformatting" to avoid an untimely death at
3070       Dave's hands. :)       Dave's hands. :)
3071    

Legend:
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