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revision 705, Wed Sep 27 18:44:44 2000 UTC revision 840, Fri Jun 15 19:05:19 2001 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2001/06/15 15:05:00 EDT
18    Tag: blume-20010615-sparc
19    Description:
20    
21    The purpose of this update is to provide an implementation of NLFFI
22    on Sparc machines.
23    
24    Here are the changes in detail:
25    
26       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
27       the Sparc implementation of the c-calls API.
28       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
29       for accessing the ML frame.  Thus, we have a real frame pointer and
30       can freely modify %sp without need for an omit-frame-ptr phase.
31       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
32       this case.
33       * ml-nlffigen has been taught to produce code for different architectures
34       and calling conventions.
35       * In a way similar to what was done in the x86 case, the Sparc
36       backend uses its own specific extension to mltree.  (For example,
37       it needs to be able to generate UNIMP instructions which are part
38       of the calling convention.)
39       * ml-nlffi-lib was reorganized to make it more modular (in particular,
40       to make it easier to plug in new machine- and os-dependent parts).
41    
42    There are some other fairly unrelated bug fixes and cleanups as well:
43    
44       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
45       that they properly share their libraries with existing SML/NJ libraries.
46       * I fixed a minor cosmetic bug in CM, supressing certain spurious
47       follow-up error messages.
48       * Updates to CM/CMB documentation.
49    
50    TODO items:
51    
52       * MLRISC should use a different register as its asmTemp on the Sparc.
53         (The current %o2 is a really bad choice because it is part of the
54         calling conventions, so things might interfere in unexpected ways.)
55    
56    ----------------------------------------------------------------------
57    Name: Matthias Blume
58    Date: 2001/06/07
59    Tag: blume-20010607-calls
60    Description:
61    
62    A number of internal changes related to C calls and calling conventions:
63    
64    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
65       number of bytes popped implicitly (by the callee).  In most cases
66       this field is 0 but on x86/win32 it is some non-zero value.  This
67       is information provided for the benefit of the "omit-frameptr" pass.
68    2. The CALL instruction on the x86 carries a similar "pops" field.
69       The instruction selection phase copies its value from the ML-Tree
70       CALL statement.
71    3. On all other architectures, the instruction selection phase checks
72       whether "pops=0" and complains if not.
73    4. The c-calls implementation for x86 now accepts two calling conventions:
74       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
75       up after the call and pops is set to 0.  For "stdcall", the caller
76       does nothing, leaving the cleanup to the callee; pops is set to
77       the number of bytes that were pushed onto the stack.
78    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
79       distinguish between "ccall" and "stdcall".
80    6. The UNIMP instruction has been added to the supported Sparc instruction
81       set. (This is needed for implementing the official C calling convention
82       on this architecture.)
83    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
84       work with the latest CM.
85    
86    ----------------------------------------------------------------------
87    Name: Matthias Blume
88    Date: 2001/06/05 15:10:00 EDT
89    Tag: blume-20010605-cm-index
90    Description:
91    
92    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
93    
94    1. CM can now generate "index files".  These are human-readable files
95       that list on a per-.cm-file basis each toplevel symbol defined or
96       imported.  The location of the index file for
97       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
98       To enable index-file generation, set CM.Control.generate_index to true
99       or export an environment-symbol: export CM_GENERATE_INDEX=true.
100    
101       The CM manual has been updated accordingly.
102    
103    2. I made some slight modifications to the c-calls API in MLRISC.
104    
105         a) There is now a callback to support saving/restoring of
106            dedicated but caller-save registers around the actual call
107            instruction.
108         b) One can optionally specify a comment-annotation for the
109            call instruction.
110    
111    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
112       (For example, the comment annotation shows the C prototype of
113        the function being called.)
114    
115    ----------------------------------------------------------------------
116    Name: Matthias Blume
117    Date: 2001/06/01 13:30:00 EDT
118    Tag: blume-20010601-nlffi-cleanup
119    Description:
120    
121    This is mostly a cleanup of MLFFI stuff:
122    
123       - some signature files have been put into a more exposed place
124       - the ugly 'f type parameter is gone (simplifies types tremendously!)
125       - ml-nlffigen changed accordingly
126       - tutorial updated
127    
128    Other changes:
129    
130       - author's affiliation in CM manual(s) updated
131       - some more recognized keywords added to Allen's sml.sty
132    
133    ----------------------------------------------------------------------
134    Name: Matthias Blume
135    Date: 2001/05/25 15:30:00 EDT
136    Tag: blume-20010525-iptr
137    Description:
138    
139      - put the official 110.33-README (as it appears on the ftp server) under
140        CVS
141      - fixed a small bug related to incomplete pointer types in
142        ml-nlffigen
143      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
144        (it does not need the 'f type parameter)
145    
146    ----------------------------------------------------------------------
147    Name: Matthias Blume
148    Date: 2001/05/23 14:30:00 EDT
149    Tag: Release_110_33
150    Description:
151    
152    New version number (110.33).  New bootfiles.
153    
154    ----------------------------------------------------------------------
155    Name: Matthias Blume
156    Date: 2001/05/22 18:06:00 EDT
157    Tag: blume-20010522-targets
158    Description:
159    
160    Made install.sh use file config/targets.customized if it exists, falling
161    back to config/targets if it doesn't.  This way one can have a customized
162    version of the targets file without touching the "real thing", thus
163    eliminating the constant fear of accidentally checking something bogus
164    back into the CVS repository...  (File config/targets.customized must
165    not be added to the repository!)
166    
167    ----------------------------------------------------------------------
168    Name: Matthias Blume
169    Date: 2001/05/22 16:30:00 EDT
170    Tag: blume-20010522-minitut
171    Description:
172    
173    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
174       struct returns.
175    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
176       incomplete, preliminary documentation for NLFFI.
177    
178    ----------------------------------------------------------------------
179    Name: Matthias Blume
180    Date: 2001/05/14 11:30:00 EDT
181    Tag: blume-20010514-script
182    Description:
183    
184    Some bugs in install script fixed.
185    
186    In addition to that I also made a slight change to the NLFFI API:
187    Functors generated by ml-nlffigen now take the dynamic library as a
188    straight functor argument, not as a suspended one.  (The original
189    functor code used to force the suspension right away anyway, so there
190    was nothing gained by this complication of the interface.)
191    
192    ----------------------------------------------------------------------
193    Name: Matthias Blume
194    Date: 2001/05/11 14:35:00 EDT
195    Tag: blume-20010511-ml-nlffi
196    Description:
197    
198    I finally took the plunge and added my new FFI code to the main
199    repository.  For x86-linux it is now ready for prime-time.
200    
201    There are two new subdirectories of "src":
202    
203      - ml-nlffi-lib:
204           The utility library for programs using the FFI interface.
205           Here is the implementation of $/c.cm and its associated low-level
206           partners $/c-int.cm and $/memory.cm.
207      - ml-nlffigen:
208           A stand-alone program for generating ML glue code from C source
209           code.
210    
211    Building ml-nlffigen requires $/ckit-lib.cm.
212    
213    The config/install.sh script has been updates to do the Right Thing
214    (hopefully).
215    
216    Notice that the source tree for the C-Kit will not be put under "src"
217    but directly under the installation root directory.  (This is the
218    structure that currently exists on the CVS server when you check out
219    module "sml".)  Fortunately, config/install.sh knows about this oddity.
220    
221    Bugs: No documentation yet.
222    
223    ----------------------------------------------------------------------
224    Name: Matthias Blume
225    Date: 2001/05/09 16:35:00 EDT
226    Tag: blume-20010509-cpscontract
227    Description:
228    
229    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
230    wrapper/unwrapper elimination did not decrement usage counts and some
231    dead variables got overlooked by the dead-up logic.)
232    
233    ----------------------------------------------------------------------
234    Name: Lal George
235    Date: 2001/05/08  17:26:09 EDT
236    Tag: george-20010508-omit-frameptr
237    Description:
238    
239    Changes to implement the omit-frame-pointer optimization to support
240    raw C calls. For now, there is only support on the Intel x86, but
241    other architectures will follow as more experience is gained with this.
242    
243    
244    ----------------------------------------------------------------------
245    Name: Matthias Blume
246    Date: 2001/05/07 14:40:00 EDT
247    Tag: blume-20010507-proxies
248    Description:
249    
250    I made into "proxy libraries" all libraries that qualify for such a
251    change.  (A qualifying library is a library that has another library or
252    groups as its sole member and repeats that member's export list
253    verbatim.  A proxy library avoids this repetition by omitting its export
254    list, effectively inheriting the list that its (only) member exports.
255    See the CM manual for more explanation.)
256    The main effect is that explicit export lists for these libraries
257    do not have to be kepts in sync, making maintenance a bit easier.
258    
259    I also added copyright notices to many .cm-files.
260    
261    Last but not least, I made a new set of bootfiles.
262    
263    ----------------------------------------------------------------------
264    Name: Matthias Blume
265    Date: 2001/05/04 17:00:00 EDT
266    Tag: blume-20010504-cm-lsplit
267    Description:
268    
269    0. John merged pending changes to $/smlnj-lib.cm
270    
271    1. Allen's previous change accidentally backed out of one of Lal's
272       earlier changes.  I undid this mistake (re-introducing Lal's change).
273    
274    2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
275       within the compiler where applicable.  There is some code simplification
276       because of that.
277    
278    3. The "split" phase (in FLINT) is now part of the default list of phases.
279       Compiler.Control.LambdaSplitting.* can be used to globally control the
280       lambda-splitting (cross-module-inlining) engine.  In addition to that,
281       it can now also be controlled on a per-source basis: CM has been taught
282       a new tool parameter applicable to ML source files.
283    
284       - To turn lambda-splitting off completely:
285            local open Compiler.Control.LambdaSplitting in
286                val _ = set Off
287            end
288       - To make "no lambda-splitting" the global default (but allow per-source
289         overriding); this is the initial setting:
290            local open Compiler.Control.LambdaSplitting in
291                val _ = set (Default NONE)
292            end
293       - To make "lambda-splitting with aggressiveness a" the global default
294         (and allow per-source overriding):
295            local open Compiler.Control.LambdaSplitting in
296                val _ = set (Default (SOME a))
297            end
298    
299       - To turn lambda-splitting off for a given ML souce file (say: a.sml)
300         write (in the respective .cm-file):
301            a.sml (lambdasplitting:off)
302       - To turn lambda-splitting for a.sml on with minimal aggressiveness:
303            a.sml (lambdasplitting:on)
304       - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
305         <a> is a decimal non-negative integer):
306            a.sml (lambdasplitting:<a>)
307       - To turn lambda-splitting for a.sml on with maximal aggressiveness:
308            a.sml (lambdasplitting:infinity)
309       - To use the global default for a.sml:
310            a.sml (lambdasplitting:default)
311         or simply
312            a.sml
313    
314    ----------------------------------------------------------------------
315    Name: Allen Leung
316    Date: 2001/05/04 01:57:00 EDT
317    Tag: leunga-20010504-sync
318    Description:
319    
320      MLRISC features.
321    
322      1. Fix to CMPXCHG instructions.
323      2. Changed RA interface to allow annotations in callbacks.
324      3. Added a new method to the stream interface to allow annotations updates.
325    
326    ----------------------------------------------------------------------
327    Name: Matthias Blume
328    Date: 2001/05/01 11:45:00 EDT
329    Tag: blume-20010501-pcedittmp
330    Description:
331    
332    Changed install.sh to use the current working directory instead of
333    /usr/tmp for a temporary file (pcedittmp).  The previous choice
334    of /usr/tmp caused trouble with MacOS X because of file premission
335    problems.
336    
337    ----------------------------------------------------------------------
338    Name: Matthias Blume
339    Date: 2001/04/20 11:10:00 EDT
340    Tag: blume-20010420-inMLflag
341    Description:
342    
343     - added vp_limitPtrMask to vproc-state.h
344       (for use by the raw-C-calls mechanism to implement proper interrupt
345        handling)
346     - made the ML compiler aware of various data-structure offsets so it
347       can generate code for accessing the vp_inML flag and vp_limitPtrMask
348     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
349       raw C-calls
350    
351    ----------------------------------------------------------------------
352    Name: Lal George
353    Date: 2001/04/20 09:15:28 EDT
354    Tag: george-20010420-macosX
355    Description:
356    
357     - Changes to port to Mac OS X; Darwin.
358    
359     - In the process I found that sqrt was broken on the PPC, because the
360       fsqrt instruction is not implemented.
361    
362    ----------------------------------------------------------------------
363    Name: Matthias Blume
364    Date: 2001/04/18 12:45:00 EDT
365    Tag: blume-20010418-ccalls
366    Description:
367    
368     - fixed two off-by-4 errors in the x86-specific c-calls implementation
369       (this bug prevented structure arguments containing pointers from being
370        passed correctly)
371     - changed the raw-C-call code in mlriscGen.sml in such a way that
372       structure arguments are represented as a pointer to the beginning
373       of the structure (instead of having a series of synthesized arguments,
374       one for each structure member)
375    
376     - made makeml script's verbosity level configurable via environment
377       variable (MAKEML_VERBOSITY)
378    
379     - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
380       in rawmem-x86.sml; we are now using the real thing
381    
382    ----------------------------------------------------------------------
383    Name: Matthias Blume
384    Date: 2001/03/22 16:25:00 EST
385    Tag: blume-20010322-bootfiles
386    Description:
387    
388    Created a new set of bootfiles (for your automatic installation convenience).
389    
390    ----------------------------------------------------------------------
391    Name: Matthias Blume
392    Date: 2001/03/22 15:10:00 EST
393    Tag: blume-20010322-rawmem-parcm
394    Description:
395    
396    1. All "raw memory access" primitives for the new FFI are implemented now
397       (at least on the x86).
398    2. Some further cleanup of CM's parallel make mechanism.
399    
400    ----------------------------------------------------------------------
401    Name: Matthias Blume
402    Date: 2001/03/19 17:53:00 EST
403    Tag: blume-20010319-parallel
404    Description:
405    
406    Parallel make (using compile servers) now works again.
407    
408    To this end, CM.stabilize and CMB.make have been modified to work in
409    two passes when compile servers are attached:
410       1. Compile everything, do not perform stabilization; this pass
411          uses compile servers
412       2. Stabilize everything; this pass does not use compile servers
413    If there are no compile servers, the two passes are combined into one
414    (as before).  Splitting the passes increases the inherent parallelism
415    in the dependency graph because the entire graph including all
416    libraries is available at the same time.  This, in turn, improves
417    server utilization.  The downside is that the master process will
418    have to do some extra work after compilation is done (because for
419    technical reasons it must re-read all the binfiles during stabilization).
420    
421    ----------------------------------------------------------------------
422    Name: Matthias Blume
423    Date: 2001/03/16 12:22:00 EST
424    Tag: blume-20010316-bootfiles
425    Description:
426    
427    Created a new set of bootfiles (for your automatic installation convenience).
428    
429    ----------------------------------------------------------------------
430    Name: Matthias Blume
431    Date: 2001/03/16 11:00:00 EST
432    Tag: blume-20010316-MLTREE-fixup
433    Description:
434    
435    This is a minor fixup for an (untagged) earlier commit by Allen.
436    (A file was missing).
437    
438    ----------------------------------------------------------------------
439    Name: Allen Leung
440    Date: Mon Mar  5 18:54:57 EST 2001
441    Tag: leunga-20010305-cut-support
442    
443    1. New support for alternative control-flow in MLTREE.
444       Currently we support
445    
446          FLOW_TO(CALL ...., [k1,...,kn])
447    
448       This is needed for 'cuts to' in C-- and try/handle-like constructs
449       in Moby
450    
451       New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
452    
453    2. Register Allocator
454    
455       Changes in interface [from Fermin, John]
456    
457    3. Alpha 8-bit SLL support [Fermin]
458    
459    4. All architectures
460    
461       A new module (ClusterExpandCopies) for expanding parallel copies.
462    
463    ----------------------------------------------------------------------
464    Name: Allen Leung
465    Date: 2001/02/27 23:07:00 EST
466    Tag: leunga-20010227-minor-stuff
467    
468    1. Alpha bug fix for CMOVNE
469    2. Handle mltree COND(..,FCMP ...,...)
470    3. Bug fix in simplifier
471    
472    ----------------------------------------------------------------------
473    Name: Matthias Blume
474    Date: 2001/01/30 17:50:00 EST
475    Tag: blume-20010130-sync
476    Description:
477    
478    This is just a minor update to sync my devel branch with the main brach.
479    The only visible change is the addition of some README files.
480    
481    ----------------------------------------------------------------------
482    Name: Matthias Blume
483    Date: 2001/01/12 23:30:00 JST
484    Tag: blume-20010112-bootfiles
485    Description:
486    
487    Made a new set of bootfiles that goes with the current state of the
488    repository.
489    
490    ----------------------------------------------------------------------
491    Name: Matthias Blume
492    Date: 2001/01/12 21:20:00 JST
493    Tag: blume-20010112-sync
494    Description:
495    
496    I am just flushing out some minor changes that had accumulated in
497    my private branch in order to sync with the main tree.  (This is
498    mainly because I had CVS trouble when trying to merge _into_ my
499    private branch.)
500    
501    Most people should be completely unaffected by this.
502    
503    ----------------------------------------------------------------------
504    Name: Allen Leung
505    Date: Thu Jan 11 21:03:00 EST 2001
506    Tag: leunga-20010111-labexp=mltree
507    Description:
508    
509    1.  Removed the type LabelExp and replace it by MLTree.
510    2.  Rewritten mltree-simplify with the pattern matcher tool.
511    3.  There were some bugs in alpha code generator which would break
512        64-bit code generation.
513    4.  Redo the tools to generate code with the
514    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
515        are now generated by perl scripts.
516    
517    ----------------------------------------------------------------------
518    Name: Matthias Blume
519    Date: 2001/01/10 21:55:00 JST
520    Tag: blume-20010110-rcc
521    Description:
522    
523    The RCC stuff now seems to work (but only on the x86).
524    This required hacking of the c-calls interface (and -implementation) in
525    MLRISC.
526    
527    Normal compiler users should be unaffected.
528    
529    ----------------------------------------------------------------------
530    Name: Matthias Blume
531    Date: 2001/01/09 01:20:00 JST
532    Tag: blume-20010109-rcc
533    Description:
534    
535    This is a fairly big patch, flushing out a large number of pending
536    changes that I made to my development copy over the last couple of days.
537    
538    Of practical relevance at this moment is a workaround for a pickling
539    bug that Allen ran into the other day.  The cause of the bug itself is
540    still unknown and it might be hard to fix it properly, but the
541    workaround has some merits of its own (namely somewhat reducing pickling
542    overhead for certain libraries).  Therefore, I think this solution should
543    be satisfactory at this time.
544    
545    The rest of the changes (i.e., the vast majority) has to do with my
546    ongoing efforts of providing direct support for C function calls from
547    ML.  At the moment there is a new primop "RAW_CCALL", typing magic
548    in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
549    case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
550    translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
551    handle RCC.
552    
553    The last part (the changes to mlriscGen.sml) are still known to be
554    wrong on the x86 and not implemented on all other architectures.  But
555    the infrastructure is in place. I had to change a few functor
556    signatures in the backend to be able to route the CCalls interface
557    from MLRISC there, and I had to specialize the mltree type (on the
558    x86) to include the necessary extensions. (The extensions themselves
559    were already there and redy to go in MLRISC/x86).
560    
561    Everything should be very happy as soon as someone helps me with
562    mlriscGen.sml...
563    
564    In any case, nothing of this should matter to anyone as long as the
565    new primop is not being used (which is going to be the case unless you
566    find it where I hid it :). The rest of the compiler is completely
567    unaffected.
568    
569    ----------------------------------------------------------------------
570    Name: Matthias Blume
571    Date: 2001/01/05 00:30:00 JST
572    Tag: blume-20010105-primops
573    Description:
574    
575    Added some experimental support for work that I am doing right now.
576    These changes mostly concern added primops, but there is also a new
577    experimental C library in the runtime system (but currently not enabled
578    anywhere except on Linux/X86).
579    
580    In the course of adding primops (and playing with them), I discovered that
581    Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
582    broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
583    To recover, I made type information in INL_PRIM mandatory and changed
584    prim.sml as well as built-in.sml accordingly.  The InLine structure now
585    has complete, correct type information (i.e., no bottom types).
586    
587    Since all these changes mean that we need new binfiles, I also bumped the
588    version number to 110.32.1.
589    
590    ----------------------------------------------------------------------
591    Name: Matthias Blume
592    Date: 2000/12/30 22:10:00 JST
593    Tag: blume-20001230-various
594    Description:
595    
596    Added proxy libraries for MLRISC and let MLRISC libraries refer
597    to each other using path anchors.  (See CM manual for explanation.)
598    
599    Updated CM documentation.
600    
601    Fixed some bugs in CM.
602    
603    Implemented "proxy" libraries (= syntactic sugar for CM).
604    
605    Added "-quiet" option to makeml and changed runtime system accordingly.
606    
607    Added cleanup handler for exportML to reset timers and compiler stats.
608    
609    ----------------------------------------------------------------------
610    Name: Lal George
611    Date: 2000/12/22 22:22:58 EST 2000
612    Tag: Release_110_32
613    Description:
614    
615            Infinite precision used throughout MLRISC.
616            see MLRISC/mltree/machine-int.sig
617    
618    ----------------------------------------------------------------------
619    Name: Matthias Blume
620    Date: 2000/12/22 23:16:00 JST
621    Tag: blume-20001222-warn
622    Description:
623    
624    Corrected wording and formatting of some CM warning message which I
625    broke in my previous patch.
626    
627    ----------------------------------------------------------------------
628    Name: Matthias Blume
629    Date: 2000/12/22 21:20:00 JST
630    Tag: blume-20001222-anchorenv
631    Description:
632    
633    Fixed CM's handling of anchor environments in connection with CMB.make.
634    
635    ----------------------------------------------------------------------
636    Name: Matthias Blume
637    Date: 2000/12/22 13:15:00 JST
638    Tag: blume-20001222-cleanup
639    Description:
640    
641    Removed src/cm/ffi which does not (and did not) belong here.
642    
643    ----------------------------------------------------------------------
644    Name: Matthias Blume
645    Date: 2000/12/21 23:55:00 JST
646    Tag: blume-20001221-exn
647    Description:
648    
649    Probably most important: CM no longer silently swallows all exceptions
650    in the compiler.
651    Plus: some other minor CM changes.  For example, CM now reports some
652    sizes for generated binfiles (code, data, envpickle, lambdapickle).
653    
654    ----------------------------------------------------------------------
655    Name: Matthias Blume
656    Date: 2000/12/15 00:01:05 JST
657    Tag: blume-20001215-dirtool
658    Description:
659    
660    - "dir" tool added.
661    - improvements and cleanup to Tools structure
662    - documentation updates
663    
664    ----------------------------------------------------------------------
665    Name: Allen Leung
666    Date: Thu Dec 14 03:45:24 EST 2000
667    Description:
668    Tag:  leunga-20001214-int-inf
669    Description:
670    
671       In IntInf, added these standard functions, which are missing from our
672    implementation:
673    
674        andb : int * int -> int
675        xorb : int * int -> int
676        orb  : int * int -> int
677        notb : int -> int
678         <<   : int * word -> int
679        ~>>  : int * word -> int
680    
681       Not tested, I hope they are correct.
682    
683    ----------------------------------------------------------------------
684    Name: Allen Leung
685    Date: Fri Dec  8 19:23:26 EST 2000
686    Description:
687    Tag:  leunga-20001208-nowhere
688    Description:
689    
690      Slight improvements to the 'nowhere' tool to handle OR-patterns,
691    to generate better error messages etc.  Plus a brief manual.
692    
693    ----------------------------------------------------------------------
694    Name: Lal George
695    Date: 2000/12/08 09:54:02 EST 2000
696    Tag: Release_110_31
697    Description:
698    
699    - Version 110.31
700    ----------------------------------------------------------------------
701    Name: Allen Leung
702    Date: Thu Dec  7 22:01:04 EST 2000
703    Tag:  leunga-20001207-cell-monster-hack
704    Description:
705    
706    Major MLRISC internal changes.  Affect all clients.
707    Summary:
708    
709    1.  Type CELLS.cell = int is now replaced by a datatype.
710        As a result, the old regmap is now gone.  Almost all interfaces
711        in MLRISC change as a consequence.
712    
713    2.  A new brand version of machine description tool (v3.0) that generates
714        modules expecting the new interface.  The old version is removed.
715    
716    3.  The RA interface has been further abstracted into two new functors.
717        RISC_RA and X86RA.  These functors have much simpler interfaces.
718        [See also directory MLRISC/demo.]
719    
720    4.  Some other new source->source code generation tools are available:
721    
722        a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
723        b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
724           I use this tool to generate the peephole optimizers---with the new
725           cell type changes, peephole rules are becoming difficult to write
726           without conditional pattern matching.
727    
728    5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
729        cover the entire MLRISC source tree so many things broke.
730    
731    6.  CM files have been moved to the subdirectory MLRISC/cm.
732        They are moved because there are a lot of them and they clutter up the
733        root dir.
734    
735    7.  More detailed documentation to come...
736    
737        NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
738        a makeml -rebuild first.  This is because of other other
739        changes that Matthias has made (see below).
740    
741    
742    ----------------------------------------------------------------------
743    Name: Matthias Blume
744    Date: 2000/11/30 23:12:00 JST
745    Tag: blume-20001130-filereorg
746    Description:
747    
748    Some manual updates and some file reorganizations in CM.
749    
750    ----------------------------------------------------------------------
751    Name: Matthias Blume
752    Date: 2000/11/24 17:45:00 JST
753    Tag: blume-20001124-link
754    Description:
755    
756    Drastically improved link traversal code for the case that the dynamic
757    value was already loaded at bootstrap time.  As a result, CM and CMB
758    now both load blazingly fast -- even on a very slow machine.  Also,
759    memory consumption has been further reduced by this.
760    
761    Warning: The format of the PIDMAP file has changed.  THerefore, to
762    bootstrap you have to do this:
763    
764    1. Run CMB.make
765    2. Make a symbolic link for the boot directory:
766         ln -s sml.boot.ARCH-OS xxx
767    3. "Rebuild" the boot directory:
768         ./makeml -boot xxx -rebuild sml ; rm xxx
769    4. Boot normally:
770          ./makeml
771    
772    ----------------------------------------------------------------------
773    Name: Matthias Blume
774    Date: 2000/11/21 21:20:00 JST
775    Tag: blume-20001121-tools
776    Description:
777    
778    Continued hacking on autoloading problem -- with success this time.
779    Also changed tool-plugin mechanism.  See new CM manual.
780    
781    ----------------------------------------------------------------------
782    Name: Matthias Blume
783    Date: 2000/11/19 14:30:00 JST
784    Tag:  blume-20001119-autoload
785    Description:
786    
787    Some hacking to make autoloading faster.  Success for CMB, no success
788    so far for CM.  There is a reduced structure CM' that autoloads faster.
789    (This is a temporary, non-documented hack to be eliminated again when
790    the general problem is solved.)
791    
792    ----------------------------------------------------------------------
793    Name: Matthias Blume
794    Date: 2000/11/17 14:10:00 JST
795    Tag: blume-20001117-pickle-lib
796    Description:
797    
798    1. Eliminated comp-lib.cm
799    2. Made pickle-lib.cm
800    3. Eliminated all uses of intset.sml (from comp-lib.cm)
801    4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
802       equivalent constructs from smlnj-lib.cm (INtHashTable).
803    5. Point 4. also goes for those uses of intmap.* in MLRISC.
804       Duplicated intmap modules thrown out.
805    6. Hunted down all duplicated SCC code and replaced it with
806       equivalent stuff (GraphSCCFn from smlnj-lib.cm).
807    7. Rewrote Feedback module.
808    8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
809       should be thrown out and equivalent modules from smlnj-lib.cm
810       should be used (IntRedBlackSet, IntListSet, ...).
811    
812    Confirmed that compiler compiles to fixpoint.
813    
814    ----------------------------------------------------------------------
815    Name: Allen Leung
816    Date: 2000/11/10 18:00:00
817    Tag: leunga-20001110-new-x86-fp
818    
819    A new x86 floating point code generator has been added.
820    By default this is turned off.  To turn this on, do:
821    
822        CM.autoload "$smlnj/compiler.cm";
823        Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
824    
825    Changes:
826    
827    1.  Changed FTAN to FPTAN so that the assembly output is correct.
828    2.  Changed the extension callback for FTANGENT to generate:
829    
830              fptan
831              fstp  %st(0)
832        instead of
833              fptan
834              fstpl ftempmem
835    
836    3.  Numerous assembly fixes for x86.
837    
838    5.  Cleaned up the machine code output module x86/x86MC.sml and added
839        support for a whole bunch of instructions and addressing modes:
840    
841          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
842          faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
843          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
844          fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
845          fxch %st(n)
846          fld %st(n)
847          fst %st(n)
848          fst mem
849          fstp %st(n)
850          fucom %st(n)
851          fucomp %st(n)
852    
853        All these are now generated when the fast fp mode is turned on.
854    
855    6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
856    
857    ----------------------------------------------------------------------
858    Name: Matthias Blume
859    Date: 2000/11/09 11:20:00 JST
860    Tag: blume-20001109-scc
861    Description:
862    
863    Eliminated some code duplication:
864    
865    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
866       (Otherwise the functor is useless.)
867    2. Used GraphSCCFn where SCCUtilFun was used previously.
868    3. Got rid of SCCUtilFun (in comp-lib.cm).
869    
870    ----------------------------------------------------------------------
871    Name: Lal George
872    Date: 2000/11/06 09:02:21 EST 2000
873    Tag: Release_110_30
874    Description:
875    
876    - Version 110.30
877    ----------------------------------------------------------------------
878    Name: Matthias Blume
879    Date: 2000/11/04 14:45:00
880    Tag: blume-20001104-mlbuild
881    Description:
882    
883    - Made ml-build faster on startup.
884    - Documentation fixes.
885    
886    ----------------------------------------------------------------------
887    Name: Matthias Blume
888    Date: 2000/11/02 17:00:00 JST
889    Tag: blume-20001102-condcomp
890    Description:
891    
892    - Small tweaks to pickler -- new BOOTFILES!
893    - Version bumped to 110.29.2.
894    - Added conditional compilation facility to init.cmi (see comment there).
895    ----------------------------------------------------------------------
896    Name: Allen Leung
897    Date: 2000/10/23 19:31:00
898    Tag: leunga-20001023-demo-ra
899    
900    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
901    2. Test programs for the graph library updated
902    3. Some new MLRISC demo programs added
903    
904    ----------------------------------------------------------------------
905    Name: Matthias Blume
906    Date: 2000/08/31 22:15:00 JST
907    Tag: blume-20001017-errmsg
908    Description:
909    
910    More error message grief: Where there used to be no messages, there
911    now were some that had bogus error regions.  Fixed.
912    
913    ----------------------------------------------------------------------
914    Name: Matthias Blume
915    Date: 2000/08/31 17:30:00 JST
916    Tag: blume-20001017-v110p29p1
917    Description:
918    
919    I made a version 110.29.1 with new bootfiles.
920    
921    Changes:  Modified pickler/unpickler for faster and leaner unpickling.
922              CM documentation changes and a small bugfix in CM's error reporting.
923    
924    ----------------------------------------------------------------------
925  Name: Lal George  Name: Lal George
926  Date: 2000/09/27 14:42:35 EDT  Date: 2000/09/27 14:42:35 EDT
927  Tag: george-20000927-nodestatus  Tag: george-20000927-nodestatus

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