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revision 676, Sat Jun 24 03:37:03 2000 UTC revision 896, Tue Jul 31 14:09:49 2001 UTC
# Line 11  Line 11 
11  Date:  Date:
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14    
15    ----------------------------------------------------------------------
16    Name: Lal George
17    Date: 2001/07/31 10:03:23 EDT 2001
18    Tag: george-20010731-x86-fmalloc
19    Description: Fixed bug in x86 calls
20    
21        There was a bug where call instructions would mysteriously
22        vanish. The call instruction had to be one that returned
23        a floating point value.
24    
25    ----------------------------------------------------------------------
26    Name: Lal George
27    Date: 2001/07/19 16:36:29 EDT 2001
28    Tag: george-20010719-simple-cells
29    Description:
30    
31    I have dramatically simplified the interface for CELLS in MLRISC.
32    
33    In summary, the cells interface is broken up into three parts:
34    
35      1. CellsBasis : CELLS_BASIS
36    
37            CellsBasis is a top level structure and common for all
38            architectures.  it contains the definitions of basic datatypes
39            and utility  functions over these types.
40    
41      2. functor Cells() : CELLS
42    
43            Cells generates an interface for CELLS that incorporates the
44            specific resources on the target architecture, such as the
45            presence of special register classes, their number and size,
46            and various useful substructures.
47    
48      3. <ARCH>CELLS
49    
50            e.g. SparcCells: SPARCCELLS
51    
52            <ARCH>CELLS usually contains additional bindings for special
53            registers  on the architecture, such as:
54    
55                    val r0 : cell           (* register zero *)
56                    val y : cell            (* Y register *)
57                    val psr : cell          (* processor status register *)
58                    ...
59    
60            The structure returned by applying the Cells functor is opened
61            in this interface.
62    
63    The main implication of all this is that the datatypes for cells is
64    split between CellsBasis and CELLS -- a fairly simple change for user
65    code.
66    
67    In the old scheme the CELLS interface had a definitional binding of
68    the form:
69    
70            signature CELLS = sig
71    
72               structure CellsBasis = CellsBasis
73    
74               ...
75    
76            end
77    
78    With all the sharing constraints that goes on in MLRISC, this old
79    design  quickly leads to errors such as:
80    
81            "structure definition spec inside of sharing ... "
82    
83    
84    and appears to require an unacceptable amount of sharing and where
85    constraint hackery.
86    
87    I think this error message (the interaction of definitional specs and
88    sharing) requires more explanation on our web page.
89    
90    ----------------------------------------------------------------------
91    Name: Matthias Blume
92    Date: 2001/07/19 15:00:00 EDT
93    Tag: blume-20010719-libreorg
94    Description:
95    
96    This update puts together a fairly extensive but straightforward change
97    to the way the libraries that implement the interactive system are
98    organized:
99    
100       The biggest change is the elimination of structure Compiler.  As a
101       replacement for this structure, there is now a CM library
102       (known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
103       that exports all the substructures of the original structure Compiler
104       directly.  So instead of saying Compiler.Foo.bar one now simply
105       says Foo.bar.  (The CM libraries actually export a collection of
106       structures that is richer than the collection of substructures of
107       structure Compiler.)
108    
109       To make the transition smooth, there is a separate library called
110       $smlnj/compiler/compiler.cm which puts together and exports the
111       original structure Compiler (or at least something very close to it).
112    
113       There are five members of the original structure Compiler
114       that are not exported directly but which instead became members
115       of a new structure Backend (described by signature BACKEND).  These are:
116       structure Profile (: PROFILE), structure Compile (: COMPILE), structure
117       Interact (: INTERACT), structure Machine (: MACHINE), and val
118       architecture (: string).
119    
120       Structure Compiler.Version has become structure CompilerVersion.
121    
122       Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
123       by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
124       or x86, respectively.
125       Each of these exports the same frontend structures that
126       $smlnj/compiler.cm exports.  But they do not have a structure Backend
127       and instead export some structure <Arch>Backend where <Arch> is Alpha32,
128       Hppa, PPC, Sparc, or X86, respectively.
129    
130       Library $smlnj/compiler/all.cm exports the union of the exports of
131       $smlnj/compiler/<arch>.cm
132    
133       There are no structures <Arch>Compiler anymore, use
134       $smlnj/compiler/<arch>.cm instead.
135    
136       Library host-compiler-0.cm is gone.  Instead, the internal library
137       that instantiates CM is now called cm0.cm.  Selection of the host
138       compiler (backend) is no longer done here but. (Responsibility for it
139       now lies with $smlnj/compiler/current.cm.  This seems to be more
140       logical.)
141    
142       Many individual files have been moved or renamed.  Some files have
143       been split into multiple files, and some "dead" files have been deleted.
144    
145    Aside from these changes to library organization, there are also changes
146    to the way the code itself is organized:
147    
148       Structure Binfile has been re-implemented in such a way that it no
149       longer needs any knowledge of the compiler.  It exclusively deals
150       with the details of binfile layout.  It no longer invokes the
151       compiler (for the purpose of creating new prospective binfile
152       content), and it no longer has any knowledge of how to interpret
153       pickles.
154    
155       Structure Compile (: COMPILE) has been stripped down to the bare
156       essentials of compilation.  It no longer deals with linking/execution.
157       The interface has been cleaned up considerably.
158    
159       Utility routines for dealing with linking and execution have been
160       moved into their own substructures.
161    
162       (The ultimate goal of these changes is to provide a light-weight
163       binfile loader/linker (at least for, e.g., stable libraries) that
164       does not require CM or the compiler to be present.)
165    
166    CM documentation has been updated to reflect the changes to library
167    organization.
168    
169    ----------------------------------------------------------------------
170    Name: Matthias Blume
171    Date: 2001/07/10 17:30:00 EDT
172    Tag: Release_110_34
173    Description:
174    
175    Minor tweak to 110.34 (re-tagged):
176    
177      - README.html file added to CVS repository
178      - runtime compiles properly under FreeBSD 3.X and 4.X
179    
180    ----------------------------------------------------------------------
181    Name: Matthias Blume
182    Date: 2001/07/10 17:30:00 EDT
183    Tag: Release_110_34
184    Description:
185    
186    New version number (110.34). New bootfiles.
187    
188    ----------------------------------------------------------------------
189    Name: Matthias Blume
190    Date: 2001/07/09 16:00:00 EDT
191    Tag: blume-20010709-more-varargs
192    Description:
193    
194    I changed the handling of varargs in ml-nlffigen again:
195    The ellipsis ... will now simply be ignored (with an accompanying warning).
196    
197    The immediate effect is that you can actually call a varargs function
198    from ML -- but you can't actually supply any arguments beyond the ones
199    specified explicitly.  (For example, you can call printf with its format
200    string, but you cannot pass additional arguments.)
201    
202    This behavior is only marginally more useful than the one before, but
203    it has the advantage that a function or, more importantly, a function
204    type never gets dropped on the floor, thus avoiding follow-up problems with
205    other types that refer to the offending one.
206    
207    ----------------------------------------------------------------------
208    Name: Matthias Blume
209    Date: 2001/07/09 11:25:00 EDT
210    Tag: blume-20010709-varargs
211    Description:
212    
213    1. ckit-lib.cm now exports structure Error
214    2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
215       with a warning accompanied by a source location.  Moreover, it
216       merely skips the offending function or type and proceeds with the
217       rest of its work.u  As a result, one can safely feed C code containing
218       "..." to ml-nlffigen.
219    3. There are some internal improvements to CM, providing slightly
220       more general string substitutions in the tools subsystem.
221    
222    ----------------------------------------------------------------------
223    Name: Matthias Blume
224    Date: 2001/06/27 15:10:00 EDT
225    Tag: blume-20010627-concur
226    Description:
227    
228    Fixed a small bug in CM's handling of parallel compilation.
229    (You could observe the bug by Control-C-interrupting an ordinary
230    CMB.make or CM.stabilize and then attaching some compile servers.
231    The result was that all of a sudden the previously interrupted
232    compilation would continue on its own.  This was because of
233    an over-optimization: CM did not bother to clean out certain queues
234    when no servers were attached "anyway", resulting in the contents
235    of these queues to grab control when new servers did get attached.)
236    
237    There is also another minor update to the CM manual.
238    
239    ----------------------------------------------------------------------
240    Name: Matthias Blume
241    Date: 2001/06/26 16:15:00 EDT
242    Tag: blume-20010626-cmdoc
243    Description:
244    
245    Minor typo fixed in CM manual (syntax diagram for libraries).
246    
247    ----------------------------------------------------------------------
248    Name: Matthias Blume
249    Date: 2001/06/25 22:55:00 EDT
250    Tag: blume-20010625-x86pc
251    Description:
252    
253    Fixed a nasty bug in the X86 assembly code that caused signal
254    handlers to fail (crash) randomly.
255    
256    ----------------------------------------------------------------------
257    Name: Matthias Blume
258    Date: 2001/06/25 12:05:00 EDT
259    Tag: blume-20010625-nlffigen
260    Description:
261    
262    This update fixes a number of minor bugs in ml-nlffigen as reported by
263    Nick Carter <nbc@andrew.cmu.edu>.
264    
265      1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
266      2. Default names for generated files are now derived from the name of
267         the C file *without its directory*.  In particular, this causes generated
268         files to be placed locally even if the C file is in some system directory.
269      3. Default names for generated signatures and structures are also derived
270         from the C file name without its directory.  This avoids silly things
271         like "structure GL/GL".
272         (Other silly names are still possible because ml-nlffigen does not do
273          a thorough check of whether generated names are legal ML identifiers.
274          When in doubt, use command line arguments to force particular names.)
275    
276    ----------------------------------------------------------------------
277    Name: Matthias Blume
278    Date: 2001/06/21 12:25:00 EDT
279    Tag: blume-20010621-eXene
280    Description:
281    
282    eXene now compiles and (sort of) works again.
283    
284    The library name (for version > 110.33) is $/eXene.cm.
285    
286    I also added an new example in src/eXene/examples/nbody.  See the
287    README file there for details.
288    
289    ----------------------------------------------------------------------
290    Name: Matthias Blume
291    Date: 2001/06/20 16:40:00 EDT
292    Tag: blume-20010620-cml
293    Description:
294    
295    CML now compiles and works again.
296    
297    Libraries (for version > 110.33):
298    
299      $cml/cml.cm            Main CML library.
300      $cml/basis.cm          CML's version of $/basis.cm.
301      $cml/cml-internal.cm   Internal helper library.
302      $cml/core-cml.cm       Internal helper library.
303      $cml-lib/trace-cml.cm  Tracing facility.
304      $cml-lib/smlnj-lib.cm  CML's version of $/smlnj-lib.cm
305    
306    The installer (config/install.sh) has been taught how to properly
307    install this stuff.
308    
309    ----------------------------------------------------------------------
310    Name: Matthias Blume
311    Date: 2001/06/19 17:55:00 EDT
312    Tag: blume-20010619-instantiate
313    Description:
314    
315    This un-breaks the fix for bug 1432.
316    (The bug was originally fixed in 110.9 but I broke it again some
317    time after that.)
318    
319    ----------------------------------------------------------------------
320    Name: Matthias Blume
321    Date: 2001/06/19 17:25:00 EDT
322    Tag: blume-20010619-signals
323    Description:
324    
325    This should (hopefully) fix the long-standing signal handling bug.
326    (The runtime system was constructing a continuation record with an
327    incorrect descriptor which would cause the GC to drop data on the floor...)
328    
329    ----------------------------------------------------------------------
330    Name: Matthias Blume
331    Date: 2001/06/15 15:05:00 EDT
332    Tag: blume-20010615-moresparc
333    Description:
334    
335    Here is a short late-hour update related to Sparc c-calls:
336    
337     -- made handling of double-word arguments a bit smarter
338    
339     -- instruction selection phase tries to collapse certain clumsily
340        constructed ML-Trees; typical example:
341    
342            ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
343    
344        This currently has no further impact on SML/NJ since mlriscGen does
345        not seem to generate such patterns in the first place, and c-calls
346        (which did generate them in the beginning) has meanwhile been fixed
347        so as to avoid them as well.
348    
349    ----------------------------------------------------------------------
350    Name: Matthias Blume
351    Date: 2001/06/15 15:05:00 EDT
352    Tag: blume-20010615-sparc
353    Description:
354    
355    The purpose of this update is to provide an implementation of NLFFI
356    on Sparc machines.
357    
358    Here are the changes in detail:
359    
360       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
361       the Sparc implementation of the c-calls API.
362       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
363       for accessing the ML frame.  Thus, we have a real frame pointer and
364       can freely modify %sp without need for an omit-frame-ptr phase.
365       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
366       this case.
367       * ml-nlffigen has been taught to produce code for different architectures
368       and calling conventions.
369       * In a way similar to what was done in the x86 case, the Sparc
370       backend uses its own specific extension to mltree.  (For example,
371       it needs to be able to generate UNIMP instructions which are part
372       of the calling convention.)
373       * ml-nlffi-lib was reorganized to make it more modular (in particular,
374       to make it easier to plug in new machine- and os-dependent parts).
375    
376    There are some other fairly unrelated bug fixes and cleanups as well:
377    
378       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
379       that they properly share their libraries with existing SML/NJ libraries.
380       * I fixed a minor cosmetic bug in CM, supressing certain spurious
381       follow-up error messages.
382       * Updates to CM/CMB documentation.
383    
384    TODO items:
385    
386       * MLRISC should use a different register as its asmTemp on the Sparc.
387         (The current %o2 is a really bad choice because it is part of the
388         calling conventions, so things might interfere in unexpected ways.)
389    
390    ----------------------------------------------------------------------
391    Name: Matthias Blume
392    Date: 2001/06/07
393    Tag: blume-20010607-calls
394    Description:
395    
396    A number of internal changes related to C calls and calling conventions:
397    
398    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
399       number of bytes popped implicitly (by the callee).  In most cases
400       this field is 0 but on x86/win32 it is some non-zero value.  This
401       is information provided for the benefit of the "omit-frameptr" pass.
402    2. The CALL instruction on the x86 carries a similar "pops" field.
403       The instruction selection phase copies its value from the ML-Tree
404       CALL statement.
405    3. On all other architectures, the instruction selection phase checks
406       whether "pops=0" and complains if not.
407    4. The c-calls implementation for x86 now accepts two calling conventions:
408       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
409       up after the call and pops is set to 0.  For "stdcall", the caller
410       does nothing, leaving the cleanup to the callee; pops is set to
411       the number of bytes that were pushed onto the stack.
412    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
413       distinguish between "ccall" and "stdcall".
414    6. The UNIMP instruction has been added to the supported Sparc instruction
415       set. (This is needed for implementing the official C calling convention
416       on this architecture.)
417    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
418       work with the latest CM.
419    
420    ----------------------------------------------------------------------
421    Name: Matthias Blume
422    Date: 2001/06/05 15:10:00 EDT
423    Tag: blume-20010605-cm-index
424    Description:
425    
426    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
427    
428    1. CM can now generate "index files".  These are human-readable files
429       that list on a per-.cm-file basis each toplevel symbol defined or
430       imported.  The location of the index file for
431       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
432       To enable index-file generation, set CM.Control.generate_index to true
433       or export an environment-symbol: export CM_GENERATE_INDEX=true.
434    
435       The CM manual has been updated accordingly.
436    
437    2. I made some slight modifications to the c-calls API in MLRISC.
438    
439         a) There is now a callback to support saving/restoring of
440            dedicated but caller-save registers around the actual call
441            instruction.
442         b) One can optionally specify a comment-annotation for the
443            call instruction.
444    
445    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
446       (For example, the comment annotation shows the C prototype of
447        the function being called.)
448    
449    ----------------------------------------------------------------------
450    Name: Matthias Blume
451    Date: 2001/06/01 13:30:00 EDT
452    Tag: blume-20010601-nlffi-cleanup
453    Description:
454    
455    This is mostly a cleanup of MLFFI stuff:
456    
457       - some signature files have been put into a more exposed place
458       - the ugly 'f type parameter is gone (simplifies types tremendously!)
459       - ml-nlffigen changed accordingly
460       - tutorial updated
461    
462    Other changes:
463    
464       - author's affiliation in CM manual(s) updated
465       - some more recognized keywords added to Allen's sml.sty
466    
467    ----------------------------------------------------------------------
468    Name: Matthias Blume
469    Date: 2001/05/25 15:30:00 EDT
470    Tag: blume-20010525-iptr
471    Description:
472    
473      - put the official 110.33-README (as it appears on the ftp server) under
474        CVS
475      - fixed a small bug related to incomplete pointer types in
476        ml-nlffigen
477      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
478        (it does not need the 'f type parameter)
479    
480    ----------------------------------------------------------------------
481    Name: Matthias Blume
482    Date: 2001/05/23 14:30:00 EDT
483    Tag: Release_110_33
484    Description:
485    
486    New version number (110.33).  New bootfiles.
487    
488    ----------------------------------------------------------------------
489    Name: Matthias Blume
490    Date: 2001/05/22 18:06:00 EDT
491    Tag: blume-20010522-targets
492    Description:
493    
494    Made install.sh use file config/targets.customized if it exists, falling
495    back to config/targets if it doesn't.  This way one can have a customized
496    version of the targets file without touching the "real thing", thus
497    eliminating the constant fear of accidentally checking something bogus
498    back into the CVS repository...  (File config/targets.customized must
499    not be added to the repository!)
500    
501    ----------------------------------------------------------------------
502    Name: Matthias Blume
503    Date: 2001/05/22 16:30:00 EDT
504    Tag: blume-20010522-minitut
505    Description:
506    
507    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
508       struct returns.
509    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
510       incomplete, preliminary documentation for NLFFI.
511    
512    ----------------------------------------------------------------------
513    Name: Matthias Blume
514    Date: 2001/05/14 11:30:00 EDT
515    Tag: blume-20010514-script
516    Description:
517    
518    Some bugs in install script fixed.
519    
520    In addition to that I also made a slight change to the NLFFI API:
521    Functors generated by ml-nlffigen now take the dynamic library as a
522    straight functor argument, not as a suspended one.  (The original
523    functor code used to force the suspension right away anyway, so there
524    was nothing gained by this complication of the interface.)
525    
526    ----------------------------------------------------------------------
527    Name: Matthias Blume
528    Date: 2001/05/11 14:35:00 EDT
529    Tag: blume-20010511-ml-nlffi
530    Description:
531    
532    I finally took the plunge and added my new FFI code to the main
533    repository.  For x86-linux it is now ready for prime-time.
534    
535    There are two new subdirectories of "src":
536    
537      - ml-nlffi-lib:
538           The utility library for programs using the FFI interface.
539           Here is the implementation of $/c.cm and its associated low-level
540           partners $/c-int.cm and $/memory.cm.
541      - ml-nlffigen:
542           A stand-alone program for generating ML glue code from C source
543           code.
544    
545    Building ml-nlffigen requires $/ckit-lib.cm.
546    
547    The config/install.sh script has been updates to do the Right Thing
548    (hopefully).
549    
550    Notice that the source tree for the C-Kit will not be put under "src"
551    but directly under the installation root directory.  (This is the
552    structure that currently exists on the CVS server when you check out
553    module "sml".)  Fortunately, config/install.sh knows about this oddity.
554    
555    Bugs: No documentation yet.
556    
557    ----------------------------------------------------------------------
558    Name: Matthias Blume
559    Date: 2001/05/09 16:35:00 EDT
560    Tag: blume-20010509-cpscontract
561    Description:
562    
563    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
564    wrapper/unwrapper elimination did not decrement usage counts and some
565    dead variables got overlooked by the dead-up logic.)
566    
567    ----------------------------------------------------------------------
568    Name: Lal George
569    Date: 2001/05/08  17:26:09 EDT
570    Tag: george-20010508-omit-frameptr
571    Description:
572    
573    Changes to implement the omit-frame-pointer optimization to support
574    raw C calls. For now, there is only support on the Intel x86, but
575    other architectures will follow as more experience is gained with this.
576    
577    
578    ----------------------------------------------------------------------
579    Name: Matthias Blume
580    Date: 2001/05/07 14:40:00 EDT
581    Tag: blume-20010507-proxies
582    Description:
583    
584    I made into "proxy libraries" all libraries that qualify for such a
585    change.  (A qualifying library is a library that has another library or
586    groups as its sole member and repeats that member's export list
587    verbatim.  A proxy library avoids this repetition by omitting its export
588    list, effectively inheriting the list that its (only) member exports.
589    See the CM manual for more explanation.)
590    The main effect is that explicit export lists for these libraries
591    do not have to be kepts in sync, making maintenance a bit easier.
592    
593    I also added copyright notices to many .cm-files.
594    
595    Last but not least, I made a new set of bootfiles.
596    
597    ----------------------------------------------------------------------
598    Name: Matthias Blume
599    Date: 2001/05/04 17:00:00 EDT
600    Tag: blume-20010504-cm-lsplit
601    Description:
602    
603    0. John merged pending changes to $/smlnj-lib.cm
604    
605    1. Allen's previous change accidentally backed out of one of Lal's
606       earlier changes.  I undid this mistake (re-introducing Lal's change).
607    
608    2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
609       within the compiler where applicable.  There is some code simplification
610       because of that.
611    
612    3. The "split" phase (in FLINT) is now part of the default list of phases.
613       Compiler.Control.LambdaSplitting.* can be used to globally control the
614       lambda-splitting (cross-module-inlining) engine.  In addition to that,
615       it can now also be controlled on a per-source basis: CM has been taught
616       a new tool parameter applicable to ML source files.
617    
618       - To turn lambda-splitting off completely:
619            local open Compiler.Control.LambdaSplitting in
620                val _ = set Off
621            end
622       - To make "no lambda-splitting" the global default (but allow per-source
623         overriding); this is the initial setting:
624            local open Compiler.Control.LambdaSplitting in
625                val _ = set (Default NONE)
626            end
627       - To make "lambda-splitting with aggressiveness a" the global default
628         (and allow per-source overriding):
629            local open Compiler.Control.LambdaSplitting in
630                val _ = set (Default (SOME a))
631            end
632    
633       - To turn lambda-splitting off for a given ML souce file (say: a.sml)
634         write (in the respective .cm-file):
635            a.sml (lambdasplitting:off)
636       - To turn lambda-splitting for a.sml on with minimal aggressiveness:
637            a.sml (lambdasplitting:on)
638       - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
639         <a> is a decimal non-negative integer):
640            a.sml (lambdasplitting:<a>)
641       - To turn lambda-splitting for a.sml on with maximal aggressiveness:
642            a.sml (lambdasplitting:infinity)
643       - To use the global default for a.sml:
644            a.sml (lambdasplitting:default)
645         or simply
646            a.sml
647    
648    ----------------------------------------------------------------------
649    Name: Allen Leung
650    Date: 2001/05/04 01:57:00 EDT
651    Tag: leunga-20010504-sync
652    Description:
653    
654      MLRISC features.
655    
656      1. Fix to CMPXCHG instructions.
657      2. Changed RA interface to allow annotations in callbacks.
658      3. Added a new method to the stream interface to allow annotations updates.
659    
660    ----------------------------------------------------------------------
661    Name: Matthias Blume
662    Date: 2001/05/01 11:45:00 EDT
663    Tag: blume-20010501-pcedittmp
664    Description:
665    
666    Changed install.sh to use the current working directory instead of
667    /usr/tmp for a temporary file (pcedittmp).  The previous choice
668    of /usr/tmp caused trouble with MacOS X because of file premission
669    problems.
670    
671    ----------------------------------------------------------------------
672    Name: Matthias Blume
673    Date: 2001/04/20 11:10:00 EDT
674    Tag: blume-20010420-inMLflag
675    Description:
676    
677     - added vp_limitPtrMask to vproc-state.h
678       (for use by the raw-C-calls mechanism to implement proper interrupt
679        handling)
680     - made the ML compiler aware of various data-structure offsets so it
681       can generate code for accessing the vp_inML flag and vp_limitPtrMask
682     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
683       raw C-calls
684    
685    ----------------------------------------------------------------------
686    Name: Lal George
687    Date: 2001/04/20 09:15:28 EDT
688    Tag: george-20010420-macosX
689    Description:
690    
691     - Changes to port to Mac OS X; Darwin.
692    
693     - In the process I found that sqrt was broken on the PPC, because the
694       fsqrt instruction is not implemented.
695    
696    ----------------------------------------------------------------------
697    Name: Matthias Blume
698    Date: 2001/04/18 12:45:00 EDT
699    Tag: blume-20010418-ccalls
700    Description:
701    
702     - fixed two off-by-4 errors in the x86-specific c-calls implementation
703       (this bug prevented structure arguments containing pointers from being
704        passed correctly)
705     - changed the raw-C-call code in mlriscGen.sml in such a way that
706       structure arguments are represented as a pointer to the beginning
707       of the structure (instead of having a series of synthesized arguments,
708       one for each structure member)
709    
710     - made makeml script's verbosity level configurable via environment
711       variable (MAKEML_VERBOSITY)
712    
713     - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
714       in rawmem-x86.sml; we are now using the real thing
715    
716    ----------------------------------------------------------------------
717    Name: Matthias Blume
718    Date: 2001/03/22 16:25:00 EST
719    Tag: blume-20010322-bootfiles
720    Description:
721    
722    Created a new set of bootfiles (for your automatic installation convenience).
723    
724    ----------------------------------------------------------------------
725    Name: Matthias Blume
726    Date: 2001/03/22 15:10:00 EST
727    Tag: blume-20010322-rawmem-parcm
728    Description:
729    
730    1. All "raw memory access" primitives for the new FFI are implemented now
731       (at least on the x86).
732    2. Some further cleanup of CM's parallel make mechanism.
733    
734    ----------------------------------------------------------------------
735    Name: Matthias Blume
736    Date: 2001/03/19 17:53:00 EST
737    Tag: blume-20010319-parallel
738    Description:
739    
740    Parallel make (using compile servers) now works again.
741    
742    To this end, CM.stabilize and CMB.make have been modified to work in
743    two passes when compile servers are attached:
744       1. Compile everything, do not perform stabilization; this pass
745          uses compile servers
746       2. Stabilize everything; this pass does not use compile servers
747    If there are no compile servers, the two passes are combined into one
748    (as before).  Splitting the passes increases the inherent parallelism
749    in the dependency graph because the entire graph including all
750    libraries is available at the same time.  This, in turn, improves
751    server utilization.  The downside is that the master process will
752    have to do some extra work after compilation is done (because for
753    technical reasons it must re-read all the binfiles during stabilization).
754    
755    ----------------------------------------------------------------------
756    Name: Matthias Blume
757    Date: 2001/03/16 12:22:00 EST
758    Tag: blume-20010316-bootfiles
759    Description:
760    
761    Created a new set of bootfiles (for your automatic installation convenience).
762    
763    ----------------------------------------------------------------------
764    Name: Matthias Blume
765    Date: 2001/03/16 11:00:00 EST
766    Tag: blume-20010316-MLTREE-fixup
767    Description:
768    
769    This is a minor fixup for an (untagged) earlier commit by Allen.
770    (A file was missing).
771    
772    ----------------------------------------------------------------------
773    Name: Allen Leung
774    Date: Mon Mar  5 18:54:57 EST 2001
775    Tag: leunga-20010305-cut-support
776    
777    1. New support for alternative control-flow in MLTREE.
778       Currently we support
779    
780          FLOW_TO(CALL ...., [k1,...,kn])
781    
782       This is needed for 'cuts to' in C-- and try/handle-like constructs
783       in Moby
784    
785       New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
786    
787    2. Register Allocator
788    
789       Changes in interface [from Fermin, John]
790    
791    3. Alpha 8-bit SLL support [Fermin]
792    
793    4. All architectures
794    
795       A new module (ClusterExpandCopies) for expanding parallel copies.
796    
797    ----------------------------------------------------------------------
798    Name: Allen Leung
799    Date: 2001/02/27 23:07:00 EST
800    Tag: leunga-20010227-minor-stuff
801    
802    1. Alpha bug fix for CMOVNE
803    2. Handle mltree COND(..,FCMP ...,...)
804    3. Bug fix in simplifier
805    
806    ----------------------------------------------------------------------
807    Name: Matthias Blume
808    Date: 2001/01/30 17:50:00 EST
809    Tag: blume-20010130-sync
810    Description:
811    
812    This is just a minor update to sync my devel branch with the main brach.
813    The only visible change is the addition of some README files.
814    
815    ----------------------------------------------------------------------
816    Name: Matthias Blume
817    Date: 2001/01/12 23:30:00 JST
818    Tag: blume-20010112-bootfiles
819    Description:
820    
821    Made a new set of bootfiles that goes with the current state of the
822    repository.
823    
824    ----------------------------------------------------------------------
825    Name: Matthias Blume
826    Date: 2001/01/12 21:20:00 JST
827    Tag: blume-20010112-sync
828    Description:
829    
830    I am just flushing out some minor changes that had accumulated in
831    my private branch in order to sync with the main tree.  (This is
832    mainly because I had CVS trouble when trying to merge _into_ my
833    private branch.)
834    
835    Most people should be completely unaffected by this.
836    
837    ----------------------------------------------------------------------
838    Name: Allen Leung
839    Date: Thu Jan 11 21:03:00 EST 2001
840    Tag: leunga-20010111-labexp=mltree
841    Description:
842    
843    1.  Removed the type LabelExp and replace it by MLTree.
844    2.  Rewritten mltree-simplify with the pattern matcher tool.
845    3.  There were some bugs in alpha code generator which would break
846        64-bit code generation.
847    4.  Redo the tools to generate code with the
848    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
849        are now generated by perl scripts.
850    
851    ----------------------------------------------------------------------
852    Name: Matthias Blume
853    Date: 2001/01/10 21:55:00 JST
854    Tag: blume-20010110-rcc
855    Description:
856    
857    The RCC stuff now seems to work (but only on the x86).
858    This required hacking of the c-calls interface (and -implementation) in
859    MLRISC.
860    
861    Normal compiler users should be unaffected.
862    
863    ----------------------------------------------------------------------
864    Name: Matthias Blume
865    Date: 2001/01/09 01:20:00 JST
866    Tag: blume-20010109-rcc
867    Description:
868    
869    This is a fairly big patch, flushing out a large number of pending
870    changes that I made to my development copy over the last couple of days.
871    
872    Of practical relevance at this moment is a workaround for a pickling
873    bug that Allen ran into the other day.  The cause of the bug itself is
874    still unknown and it might be hard to fix it properly, but the
875    workaround has some merits of its own (namely somewhat reducing pickling
876    overhead for certain libraries).  Therefore, I think this solution should
877    be satisfactory at this time.
878    
879    The rest of the changes (i.e., the vast majority) has to do with my
880    ongoing efforts of providing direct support for C function calls from
881    ML.  At the moment there is a new primop "RAW_CCALL", typing magic
882    in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
883    case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
884    translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
885    handle RCC.
886    
887    The last part (the changes to mlriscGen.sml) are still known to be
888    wrong on the x86 and not implemented on all other architectures.  But
889    the infrastructure is in place. I had to change a few functor
890    signatures in the backend to be able to route the CCalls interface
891    from MLRISC there, and I had to specialize the mltree type (on the
892    x86) to include the necessary extensions. (The extensions themselves
893    were already there and redy to go in MLRISC/x86).
894    
895    Everything should be very happy as soon as someone helps me with
896    mlriscGen.sml...
897    
898    In any case, nothing of this should matter to anyone as long as the
899    new primop is not being used (which is going to be the case unless you
900    find it where I hid it :). The rest of the compiler is completely
901    unaffected.
902    
903    ----------------------------------------------------------------------
904    Name: Matthias Blume
905    Date: 2001/01/05 00:30:00 JST
906    Tag: blume-20010105-primops
907    Description:
908    
909    Added some experimental support for work that I am doing right now.
910    These changes mostly concern added primops, but there is also a new
911    experimental C library in the runtime system (but currently not enabled
912    anywhere except on Linux/X86).
913    
914    In the course of adding primops (and playing with them), I discovered that
915    Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
916    broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
917    To recover, I made type information in INL_PRIM mandatory and changed
918    prim.sml as well as built-in.sml accordingly.  The InLine structure now
919    has complete, correct type information (i.e., no bottom types).
920    
921    Since all these changes mean that we need new binfiles, I also bumped the
922    version number to 110.32.1.
923    
924    ----------------------------------------------------------------------
925    Name: Matthias Blume
926    Date: 2000/12/30 22:10:00 JST
927    Tag: blume-20001230-various
928    Description:
929    
930    Added proxy libraries for MLRISC and let MLRISC libraries refer
931    to each other using path anchors.  (See CM manual for explanation.)
932    
933    Updated CM documentation.
934    
935    Fixed some bugs in CM.
936    
937    Implemented "proxy" libraries (= syntactic sugar for CM).
938    
939    Added "-quiet" option to makeml and changed runtime system accordingly.
940    
941    Added cleanup handler for exportML to reset timers and compiler stats.
942    
943    ----------------------------------------------------------------------
944    Name: Lal George
945    Date: 2000/12/22 22:22:58 EST 2000
946    Tag: Release_110_32
947    Description:
948    
949            Infinite precision used throughout MLRISC.
950            see MLRISC/mltree/machine-int.sig
951    
952    ----------------------------------------------------------------------
953    Name: Matthias Blume
954    Date: 2000/12/22 23:16:00 JST
955    Tag: blume-20001222-warn
956    Description:
957    
958    Corrected wording and formatting of some CM warning message which I
959    broke in my previous patch.
960    
961    ----------------------------------------------------------------------
962    Name: Matthias Blume
963    Date: 2000/12/22 21:20:00 JST
964    Tag: blume-20001222-anchorenv
965    Description:
966    
967    Fixed CM's handling of anchor environments in connection with CMB.make.
968    
969    ----------------------------------------------------------------------
970    Name: Matthias Blume
971    Date: 2000/12/22 13:15:00 JST
972    Tag: blume-20001222-cleanup
973    Description:
974    
975    Removed src/cm/ffi which does not (and did not) belong here.
976    
977    ----------------------------------------------------------------------
978    Name: Matthias Blume
979    Date: 2000/12/21 23:55:00 JST
980    Tag: blume-20001221-exn
981    Description:
982    
983    Probably most important: CM no longer silently swallows all exceptions
984    in the compiler.
985    Plus: some other minor CM changes.  For example, CM now reports some
986    sizes for generated binfiles (code, data, envpickle, lambdapickle).
987    
988    ----------------------------------------------------------------------
989    Name: Matthias Blume
990    Date: 2000/12/15 00:01:05 JST
991    Tag: blume-20001215-dirtool
992    Description:
993    
994    - "dir" tool added.
995    - improvements and cleanup to Tools structure
996    - documentation updates
997    
998    ----------------------------------------------------------------------
999    Name: Allen Leung
1000    Date: Thu Dec 14 03:45:24 EST 2000
1001    Description:
1002    Tag:  leunga-20001214-int-inf
1003    Description:
1004    
1005       In IntInf, added these standard functions, which are missing from our
1006    implementation:
1007    
1008        andb : int * int -> int
1009        xorb : int * int -> int
1010        orb  : int * int -> int
1011        notb : int -> int
1012         <<   : int * word -> int
1013        ~>>  : int * word -> int
1014    
1015       Not tested, I hope they are correct.
1016    
1017    ----------------------------------------------------------------------
1018    Name: Allen Leung
1019    Date: Fri Dec  8 19:23:26 EST 2000
1020    Description:
1021    Tag:  leunga-20001208-nowhere
1022    Description:
1023    
1024      Slight improvements to the 'nowhere' tool to handle OR-patterns,
1025    to generate better error messages etc.  Plus a brief manual.
1026    
1027    ----------------------------------------------------------------------
1028    Name: Lal George
1029    Date: 2000/12/08 09:54:02 EST 2000
1030    Tag: Release_110_31
1031    Description:
1032    
1033    - Version 110.31
1034    ----------------------------------------------------------------------
1035    Name: Allen Leung
1036    Date: Thu Dec  7 22:01:04 EST 2000
1037    Tag:  leunga-20001207-cell-monster-hack
1038    Description:
1039    
1040    Major MLRISC internal changes.  Affect all clients.
1041    Summary:
1042    
1043    1.  Type CELLS.cell = int is now replaced by a datatype.
1044        As a result, the old regmap is now gone.  Almost all interfaces
1045        in MLRISC change as a consequence.
1046    
1047    2.  A new brand version of machine description tool (v3.0) that generates
1048        modules expecting the new interface.  The old version is removed.
1049    
1050    3.  The RA interface has been further abstracted into two new functors.
1051        RISC_RA and X86RA.  These functors have much simpler interfaces.
1052        [See also directory MLRISC/demo.]
1053    
1054    4.  Some other new source->source code generation tools are available:
1055    
1056        a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
1057        b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
1058           I use this tool to generate the peephole optimizers---with the new
1059           cell type changes, peephole rules are becoming difficult to write
1060           without conditional pattern matching.
1061    
1062    5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
1063        cover the entire MLRISC source tree so many things broke.
1064    
1065    6.  CM files have been moved to the subdirectory MLRISC/cm.
1066        They are moved because there are a lot of them and they clutter up the
1067        root dir.
1068    
1069    7.  More detailed documentation to come...
1070    
1071        NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
1072        a makeml -rebuild first.  This is because of other other
1073        changes that Matthias has made (see below).
1074    
1075    
1076    ----------------------------------------------------------------------
1077    Name: Matthias Blume
1078    Date: 2000/11/30 23:12:00 JST
1079    Tag: blume-20001130-filereorg
1080    Description:
1081    
1082    Some manual updates and some file reorganizations in CM.
1083    
1084    ----------------------------------------------------------------------
1085    Name: Matthias Blume
1086    Date: 2000/11/24 17:45:00 JST
1087    Tag: blume-20001124-link
1088    Description:
1089    
1090    Drastically improved link traversal code for the case that the dynamic
1091    value was already loaded at bootstrap time.  As a result, CM and CMB
1092    now both load blazingly fast -- even on a very slow machine.  Also,
1093    memory consumption has been further reduced by this.
1094    
1095    Warning: The format of the PIDMAP file has changed.  THerefore, to
1096    bootstrap you have to do this:
1097    
1098    1. Run CMB.make
1099    2. Make a symbolic link for the boot directory:
1100         ln -s sml.boot.ARCH-OS xxx
1101    3. "Rebuild" the boot directory:
1102         ./makeml -boot xxx -rebuild sml ; rm xxx
1103    4. Boot normally:
1104          ./makeml
1105    
1106    ----------------------------------------------------------------------
1107    Name: Matthias Blume
1108    Date: 2000/11/21 21:20:00 JST
1109    Tag: blume-20001121-tools
1110    Description:
1111    
1112    Continued hacking on autoloading problem -- with success this time.
1113    Also changed tool-plugin mechanism.  See new CM manual.
1114    
1115    ----------------------------------------------------------------------
1116    Name: Matthias Blume
1117    Date: 2000/11/19 14:30:00 JST
1118    Tag:  blume-20001119-autoload
1119    Description:
1120    
1121    Some hacking to make autoloading faster.  Success for CMB, no success
1122    so far for CM.  There is a reduced structure CM' that autoloads faster.
1123    (This is a temporary, non-documented hack to be eliminated again when
1124    the general problem is solved.)
1125    
1126    ----------------------------------------------------------------------
1127    Name: Matthias Blume
1128    Date: 2000/11/17 14:10:00 JST
1129    Tag: blume-20001117-pickle-lib
1130    Description:
1131    
1132    1. Eliminated comp-lib.cm
1133    2. Made pickle-lib.cm
1134    3. Eliminated all uses of intset.sml (from comp-lib.cm)
1135    4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
1136       equivalent constructs from smlnj-lib.cm (INtHashTable).
1137    5. Point 4. also goes for those uses of intmap.* in MLRISC.
1138       Duplicated intmap modules thrown out.
1139    6. Hunted down all duplicated SCC code and replaced it with
1140       equivalent stuff (GraphSCCFn from smlnj-lib.cm).
1141    7. Rewrote Feedback module.
1142    8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
1143       should be thrown out and equivalent modules from smlnj-lib.cm
1144       should be used (IntRedBlackSet, IntListSet, ...).
1145    
1146    Confirmed that compiler compiles to fixpoint.
1147    
1148    ----------------------------------------------------------------------
1149    Name: Allen Leung
1150    Date: 2000/11/10 18:00:00
1151    Tag: leunga-20001110-new-x86-fp
1152    
1153    A new x86 floating point code generator has been added.
1154    By default this is turned off.  To turn this on, do:
1155    
1156        CM.autoload "$smlnj/compiler.cm";
1157        Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
1158    
1159    Changes:
1160    
1161    1.  Changed FTAN to FPTAN so that the assembly output is correct.
1162    2.  Changed the extension callback for FTANGENT to generate:
1163    
1164              fptan
1165              fstp  %st(0)
1166        instead of
1167              fptan
1168              fstpl ftempmem
1169    
1170    3.  Numerous assembly fixes for x86.
1171    
1172    5.  Cleaned up the machine code output module x86/x86MC.sml and added
1173        support for a whole bunch of instructions and addressing modes:
1174    
1175          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
1176          faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
1177          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
1178          fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
1179          fxch %st(n)
1180          fld %st(n)
1181          fst %st(n)
1182          fst mem
1183          fstp %st(n)
1184          fucom %st(n)
1185          fucomp %st(n)
1186    
1187        All these are now generated when the fast fp mode is turned on.
1188    
1189    6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
1190    
1191    ----------------------------------------------------------------------
1192    Name: Matthias Blume
1193    Date: 2000/11/09 11:20:00 JST
1194    Tag: blume-20001109-scc
1195    Description:
1196    
1197    Eliminated some code duplication:
1198    
1199    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
1200       (Otherwise the functor is useless.)
1201    2. Used GraphSCCFn where SCCUtilFun was used previously.
1202    3. Got rid of SCCUtilFun (in comp-lib.cm).
1203    
1204    ----------------------------------------------------------------------
1205    Name: Lal George
1206    Date: 2000/11/06 09:02:21 EST 2000
1207    Tag: Release_110_30
1208    Description:
1209    
1210    - Version 110.30
1211    ----------------------------------------------------------------------
1212    Name: Matthias Blume
1213    Date: 2000/11/04 14:45:00
1214    Tag: blume-20001104-mlbuild
1215    Description:
1216    
1217    - Made ml-build faster on startup.
1218    - Documentation fixes.
1219    
1220    ----------------------------------------------------------------------
1221    Name: Matthias Blume
1222    Date: 2000/11/02 17:00:00 JST
1223    Tag: blume-20001102-condcomp
1224    Description:
1225    
1226    - Small tweaks to pickler -- new BOOTFILES!
1227    - Version bumped to 110.29.2.
1228    - Added conditional compilation facility to init.cmi (see comment there).
1229    ----------------------------------------------------------------------
1230    Name: Allen Leung
1231    Date: 2000/10/23 19:31:00
1232    Tag: leunga-20001023-demo-ra
1233    
1234    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
1235    2. Test programs for the graph library updated
1236    3. Some new MLRISC demo programs added
1237    
1238    ----------------------------------------------------------------------
1239    Name: Matthias Blume
1240    Date: 2000/08/31 22:15:00 JST
1241    Tag: blume-20001017-errmsg
1242    Description:
1243    
1244    More error message grief: Where there used to be no messages, there
1245    now were some that had bogus error regions.  Fixed.
1246    
1247    ----------------------------------------------------------------------
1248    Name: Matthias Blume
1249    Date: 2000/08/31 17:30:00 JST
1250    Tag: blume-20001017-v110p29p1
1251    Description:
1252    
1253    I made a version 110.29.1 with new bootfiles.
1254    
1255    Changes:  Modified pickler/unpickler for faster and leaner unpickling.
1256              CM documentation changes and a small bugfix in CM's error reporting.
1257    
1258    ----------------------------------------------------------------------
1259    Name: Lal George
1260    Date: 2000/09/27 14:42:35 EDT
1261    Tag: george-20000927-nodestatus
1262    Description:
1263    
1264    Changed the type of the nodestatus, so that:
1265    
1266            SPILLED(~1)             is now SPILLED
1267            SPILLED(m) where m>=0   is now MEMREG(m)
1268            SPILLED(s) where s<~1   is now SPILL_LOC(~s)
1269    
1270    ----------------------------------------------------------------------
1271    Name: Matthias Blume
1272    Date: 2000/09/07 14:45:00 JST
1273    Tag: blume-20000907-cmerrmsg
1274    Description:
1275    
1276    Small tweak to CM to avoid getting ML syntax error messages twice.
1277    
1278    ----------------------------------------------------------------------
1279    Name: Matthias Blume
1280    Date: 2000/08/31 18:00:00 JST
1281    Tag: blume-20000831-cvsbootfiles
1282    Description:
1283    
1284    New URL for boot files (because the 110.29 files on the BL server do
1285    now work correctly with my updated install scripts for yacc and lex).
1286    
1287    ----------------------------------------------------------------------
1288    Name: Matthias Blume
1289    Date: 2000/08/08 12:33:00 JST
1290    Tag: blume-20000808-manual
1291    Description:
1292    
1293    Tiny update to CM manual.
1294    
1295    ----------------------------------------------------------------------
1296    Name: Allen Leung
1297    Date: 2000/08/7 19:31:00
1298    Tag: leunga-20000807-a-whole-bunch-of-stuff
1299    
1300      Moby, C--, SSA, x86, machine descriptions etc.  Should only affect C--
1301    and Mobdy.
1302    
1303    1.  x86
1304    
1305       a.  Fixes to peephole module by John and Dan.
1306       b.  Assembly fix to SETcc by Allen.
1307       c.  Fix to c-call by John.
1308       d.  Fix to spilling by John.  (This one deals with the missing FSTPT case)
1309       e.  Instruction selection optimization to SETcc as suggested by John.
1310    
1311           For example,
1312    
1313            MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
1314    
1315           should generate:
1316    
1317            MOVL a, x
1318            SUBL b, x
1319            SHRL 31, x
1320    
1321    2.  IR stuff
1322    
1323         A bunch of new DJ-graph related algorithms added.  These
1324         speed up SSA construction.
1325    
1326    3.  SSA + Scheduling
1327    
1328         Added code for SSA and scheduling to the repository
1329    
1330    ----------------------------------------------------------------------
1331    Name: Lal George
1332    Date: 2000/07/27 11:53:14 EDT
1333    
1334    Tag: lal-20000727-linux-ppc
1335    Description:
1336    
1337     Made changes to support Linux PPC.
1338     p.s. I have confirmation that the 110.29 boot files work fine.
1339    
1340    ----------------------------------------------------------------------
1341    Name: Matthias Blume
1342    Date: 2000/07/27 17:40:00 JST
1343    Tag: blume-20000727-scripts
1344    Description:
1345    
1346    !!!! WARNING !!!!
1347    You must recompile the runtime system!
1348    !!!! WARNING !!!!
1349    
1350    This is basically another round of script-enhancements:
1351    
1352    1. sml, ml-build, and ml-makedepend accept options -D and -U to define
1353       and undefine CM preprocessor symbols.
1354    
1355    2. ml-build avoids generating a new heap image if it finds that the
1356       existing one is still ok.  (The condition is that no ML file had to
1357       be recompiled and all ML files are found to be older that the heap
1358       file.)
1359    
1360       To make this work smoothly, I also hacked the runtime system as
1361       well as SMLofNJ.SysInfo to get access to the heap image suffix
1362       (.sparc-solaris, ...) that is currently being used.
1363    
1364       Moreover, the signature of CM.mk_standalone has changed.  See the
1365       CM manual.
1366    
1367    3. ml-makedepend accepts additional options -n, -a, and -o.  (See the
1368       CM manual for details.)
1369    
1370    4. More CM manual updates:
1371        - all of the above has been documented.
1372        - there is now a section describing the (CM-related) command line
1373          arguments that are accepted by the "sml" command
1374    
1375    ----------------------------------------------------------------------
1376    Name: Matthias Blume
1377    Date: 2000/07/25 16:20:00 JST
1378    Tag: blume-20000725-makedepend
1379    Description:
1380    
1381    Added a script called ml-makedepend.  This can be used in makefiles
1382    for Unix' make in a way very similar to the "makedepend" command for
1383    C.
1384    
1385    The script internally uses function CM.sources.
1386    
1387    Synopsis:
1388    
1389        ml-makedepend [-f makefile] cmfile targetname
1390    
1391    The default for the makefile is "makefile" (or "Makefile" should
1392    "makefile" not exist).
1393    
1394    ml-makedepend adds a cmfile/targetname-specific section to this
1395    makefile (after removing the previous version of this section).  The
1396    section contains a single dependency specification with targetname on
1397    the LHS (targetname is an arbitrary name), and a list of files derived
1398    from the cmfile on the RHS.  Some of the files on the RHS are
1399    ARCH/OPSYS-specific.  Therefore, ml-makedepend inserts references to
1400    "make" variables $(ARCH) and $(OPSYS) in place of the corresponding
1401    path names.  The makefile writer is responsible for making sure that
1402    these variables have correct at the time "make" is invoked.
1403    
1404    ----------------------------------------------------------------------
1405    Name: Matthias Blume
1406    Date: 2000/07/22 23:30:00 JST
1407    Tag: blume-20000722-urlupdate
1408    Description:
1409    
1410    Changed BOOT and config/srcarchiveurl to point to BL server:
1411    
1412        ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
1413    
1414    ----------------------------------------------------------------------
1415    Name: Matthias Blume
1416    Date: 2000/07/18 18:00:00 JST
1417    Tag: blume-20000718-Version_110_29
1418    Description:
1419    
1420    1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
1421    
1422    2. Updated config/version to 110.29
1423    
1424    3. Updated config/srcarchiveurl
1425    
1426    3. New boot files!
1427       ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
1428    
1429    ----------------------------------------------------------------------
1430    Name: Matthias Blume
1431    Date: 2000/07/11 13:58:00 JST
1432    Tag: blume-20000711-doctypo
1433    Description:
1434    
1435    Fixed a few typos in CM manual.
1436    
1437    ----------------------------------------------------------------------
1438    Name: Allen Leung
1439    Date: 2000/06/15 00:38:00
1440    Tag: leunga-20000704-sparc-x86
1441    
1442    1. x86 peephole improvement sp += k; sp -= k => nop  [from John]
1443    2. fix to x86 RET bug [found by Dan Grossman]
1444    3. sparc assembly bug fix for ticc instructions [found by Fermin]
1445    
1446       Affects c-- and moby only
1447    
1448    ----------------------------------------------------------------------
1449    Name: Matthias Blume
1450    Date: 2000/07/04 15:26:00
1451    Tag: blume-20000704-trigger
1452    Description:
1453    
1454    1. Improvements to CM manual.
1455    2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
1456       of getting a back-trace.  The function, when called, raises an
1457       internal exception which explicitly carries the full back-trace history,
1458       so it is unaffected by any intervening handle-raise pairs ("trivial"
1459       or not).  The interactive loop will print that history once it arrives
1460       at top level.
1461       Short of having all exceptions implicitly carry the full history, the
1462       recommended way of using this facility is:
1463         - compile your program with instrumentation "on"
1464         - run it, when it raises an exception, look at the history
1465         - if the history is "cut off" because of some handler, go and modify
1466           your program so that it explicitly calls BTrace.trigger
1467         - recompile (still instrumented), and rerun; look at the full history
1468    
1469    ----------------------------------------------------------------------
1470    Name: Matthias Blume
1471    Date: 2000/07/03 15:36:00 JST
1472    Tag: blume-20000702-manual
1473    Description:
1474    
1475    Small corrections and updates to CM manual.
1476    
1477    ----------------------------------------------------------------------
1478    Name: Matthias Blume
1479    Date: 2000/06/29 16:04:00 JST
1480    Tag: blume-20000629-yacctool
1481    Description:
1482    
1483    Changes:
1484    
1485    1. Class "mlyacc" now takes separate arguments to pass options to
1486       generated .sml- and .sig-files independently.
1487    2. Corresponding CM manual updates.
1488    3. BTrace module now also reports call sites.  (However, for loop clusters
1489       it only shows from where the cluster was entered.)  There are associated
1490       modifications to core.sml, internals.{sig,sml}, btrace.sml, and btimp.sml.
1491    
1492    ----------------------------------------------------------------------
1493    Name: Matthias Blume
1494    Date: 2000/06/27 16:51:00 JST
1495    Tag: blume-20000627-noweb
1496    Description:
1497    
1498    Changes:
1499    
1500     1. Implemented "subdir" and "witness" options for noweb tool.
1501        This caused some slight internal changes in CM's tool implementation.
1502     2. Fixed bug in "tool plugin" mechanism.  This is essentially cleaning
1503        some remaining issues from earlier path anchor changes.
1504     3. Updated CM manual accordingly.
1505    
1506     4. Changed implementation of back-tracing so that I now consider it
1507        ready for prime-time.
1508    
1509        In particular, you don't have to explicitly trigger the back-trace
1510        anymore.  Instead, if you are running BTrace-instrumented code and
1511        there is an uncaught exception (regardless of whether or not it was
1512        raised in instrumented code), the top-level evalloop will print
1513        the back-trace.
1514    
1515        Features:
1516    
1517          - Instrumented and uninstrumented code work together seemlessly.
1518            (Of course, uninstrumented code is never mentioned in actual
1519             back-traces.)
1520    
1521          - Asymptotic time- and space-complexity of instrumented code is
1522            equal to that of uninstrumented code.  (This means that
1523            tail-recursion is preserved by the instrumentation phase.)
1524    
1525          - Modules whose code has been instrumented in different sessions
1526            work together without problem.
1527    
1528          - There is no penalty whatsoever on uninstrumented code.
1529    
1530          - There is no penalty on "raise" expressions, even in
1531            instrumented code.
1532    
1533        A potential bug (or perhaps it is a feature, too):
1534    
1535          A back-trace reaches no further than the outermost instrumented
1536          non-trivial "raise".  Here, a "trivial" raise is one that is the
1537          sole RHS of a "handle" rule.  Thus, back-traces reach trough
1538    
1539               <exp> handle e => raise e
1540    
1541          and even
1542    
1543               <exp> handle Foo => raise Bar
1544    
1545          and, of course, through
1546    
1547               <exp> handle Foo => ...
1548    
1549         if the exception was not Foo.
1550    
1551         Back-traces always reach right through any un-instrumented code
1552         including any of its "handle" expressions, trivial or not.
1553    
1554       To try this out, do the following:
1555    
1556         - Erase all existing binfiles for your program.
1557           (You may keep binfiles for those modules where you think you
1558            definitely don't need back-tracing.)
1559         - Turn on back-trace instrumentation:
1560              SMLofNJ.Internals.BTrace.mode (SOME true);
1561         - Recompile your program.  (I.e., run "CM.make" or "use".)
1562         - You may now turn instrumentation off again (if you want):
1563              SMLofNJ.Internals.BTrace.mode (SOME false);
1564         - Run your program as usual.  If it raises an exception that
1565           reaches the interactive toplevel, then a back-trace will
1566           automatically be printed.  After that, the toplevel loop
1567           will print the exception history as usual.
1568    
1569    ----------------------------------------------------------------------
1570    Name: Matthias Blume
1571    Date: 2000/06/26 09:56:46 JST
1572    Tag: blume-20000626-setup
1573    Description:
1574    
1575    CM: - setup-parameter to "sml" added; this can be used to run arbitrary
1576          ML code before and after compiling a file (e.g., to set compiler
1577          flags)
1578    
1579    Compiler: - improved btrace API (in core.sml, internals.{sig,sml})
1580              - associated changes to btrace.sml (BTrace instrumentation pass)
1581              - cleaner implementation of btimp.sml (BTrace tracing and report
1582                module)
1583    
1584    CM manual: * new path encoding documented
1585               * description of setup-parameter to "sml" added
1586    
1587    The biggest user-visible change to back-tracing is that it is no
1588    longer necessary to compile all traced modules within the same
1589    session.  (This was a real limitation.)
1590    
1591  ----------------------------------------------------------------------  ----------------------------------------------------------------------
1592  Name: Matthias Blume  Name: Matthias Blume
1593  Date: 2000/06/24 12:40:00 JST  Date: 2000/06/24 12:40:00 JST

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