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revision 680, Mon Jul 3 06:35:55 2000 UTC revision 841, Fri Jun 15 21:38:20 2001 UTC
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11  Date:  Date:
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14    
15    ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2001/06/15 15:05:00 EDT
18    Tag: blume-20010615-moresparc
19    Description:
20    
21    Here is a short late-hour update related to Sparc c-calls:
22    
23     -- made handling of double-word arguments a bit smarter
24    
25     -- instruction selection phase tries to collapse certain clumsily
26        constructed ML-Trees; typical example:
27    
28            ADD(ty,ADD(_,e,LI d1),LI d2)  ->  ADD(ty,e,LI(d1+d2))
29    
30        This currently has no further impact on SML/NJ since mlriscGen does
31        not seem to generate such patterns in the first place, and c-calls
32        (which did generate them in the beginning) has meanwhile been fixed
33        so as to avoid them as well.
34    
35    ----------------------------------------------------------------------
36    Name: Matthias Blume
37    Date: 2001/06/15 15:05:00 EDT
38    Tag: blume-20010615-sparc
39    Description:
40    
41    The purpose of this update is to provide an implementation of NLFFI
42    on Sparc machines.
43    
44    Here are the changes in detail:
45    
46       * src/MLRISC/sparc/c-calls/sparc-c-calls.sml is a new file containing
47       the Sparc implementation of the c-calls API.
48       * The Sparc backend of SML/NJ has been modified to uniformely use %fp
49       for accessing the ML frame.  Thus, we have a real frame pointer and
50       can freely modify %sp without need for an omit-frame-ptr phase.
51       The vfp logic in src/compiler/CodeGen/* has been changed to accomodate
52       this case.
53       * ml-nlffigen has been taught to produce code for different architectures
54       and calling conventions.
55       * In a way similar to what was done in the x86 case, the Sparc
56       backend uses its own specific extension to mltree.  (For example,
57       it needs to be able to generate UNIMP instructions which are part
58       of the calling convention.)
59       * ml-nlffi-lib was reorganized to make it more modular (in particular,
60       to make it easier to plug in new machine- and os-dependent parts).
61    
62    There are some other fairly unrelated bug fixes and cleanups as well:
63    
64       * I further hacked the .cm files for MLRISC tools (like MDLGen) so
65       that they properly share their libraries with existing SML/NJ libraries.
66       * I fixed a minor cosmetic bug in CM, supressing certain spurious
67       follow-up error messages.
68       * Updates to CM/CMB documentation.
69    
70    TODO items:
71    
72       * MLRISC should use a different register as its asmTemp on the Sparc.
73         (The current %o2 is a really bad choice because it is part of the
74         calling conventions, so things might interfere in unexpected ways.)
75    
76    ----------------------------------------------------------------------
77    Name: Matthias Blume
78    Date: 2001/06/07
79    Tag: blume-20010607-calls
80    Description:
81    
82    A number of internal changes related to C calls and calling conventions:
83    
84    1. ML-Tree CALL statements now carry a "pops" field.  It indicates the
85       number of bytes popped implicitly (by the callee).  In most cases
86       this field is 0 but on x86/win32 it is some non-zero value.  This
87       is information provided for the benefit of the "omit-frameptr" pass.
88    2. The CALL instruction on the x86 carries a similar "pops" field.
89       The instruction selection phase copies its value from the ML-Tree
90       CALL statement.
91    3. On all other architectures, the instruction selection phase checks
92       whether "pops=0" and complains if not.
93    4. The c-calls implementation for x86 now accepts two calling conventions:
94       "ccall" and "stdcall".  When "ccall" is selected, the caller cleans
95       up after the call and pops is set to 0.  For "stdcall", the caller
96       does nothing, leaving the cleanup to the callee; pops is set to
97       the number of bytes that were pushed onto the stack.
98    5. The cproto decoder (compiler/Semant/types/cproto.sml) now can
99       distinguish between "ccall" and "stdcall".
100    6. The UNIMP instruction has been added to the supported Sparc instruction
101       set. (This is needed for implementing the official C calling convention
102       on this architecture.)
103    7. I fixed some of the .cm files under src/MLRISC/Tools to make them
104       work with the latest CM.
105    
106    ----------------------------------------------------------------------
107    Name: Matthias Blume
108    Date: 2001/06/05 15:10:00 EDT
109    Tag: blume-20010605-cm-index
110    Description:
111    
112    0. The "lambdasplit" parameter for class "sml" in CM has been documented.
113    
114    1. CM can now generate "index files".  These are human-readable files
115       that list on a per-.cm-file basis each toplevel symbol defined or
116       imported.  The location of the index file for
117       <p>/<d>.cm is <p>/CM/INDEX/<d>.cm.
118       To enable index-file generation, set CM.Control.generate_index to true
119       or export an environment-symbol: export CM_GENERATE_INDEX=true.
120    
121       The CM manual has been updated accordingly.
122    
123    2. I made some slight modifications to the c-calls API in MLRISC.
124    
125         a) There is now a callback to support saving/restoring of
126            dedicated but caller-save registers around the actual call
127            instruction.
128         b) One can optionally specify a comment-annotation for the
129            call instruction.
130    
131    3. SML/NJ (mlriscGen.sml) uses this new API for the rawccall primop.
132       (For example, the comment annotation shows the C prototype of
133        the function being called.)
134    
135    ----------------------------------------------------------------------
136    Name: Matthias Blume
137    Date: 2001/06/01 13:30:00 EDT
138    Tag: blume-20010601-nlffi-cleanup
139    Description:
140    
141    This is mostly a cleanup of MLFFI stuff:
142    
143       - some signature files have been put into a more exposed place
144       - the ugly 'f type parameter is gone (simplifies types tremendously!)
145       - ml-nlffigen changed accordingly
146       - tutorial updated
147    
148    Other changes:
149    
150       - author's affiliation in CM manual(s) updated
151       - some more recognized keywords added to Allen's sml.sty
152    
153    ----------------------------------------------------------------------
154    Name: Matthias Blume
155    Date: 2001/05/25 15:30:00 EDT
156    Tag: blume-20010525-iptr
157    Description:
158    
159      - put the official 110.33-README (as it appears on the ftp server) under
160        CVS
161      - fixed a small bug related to incomplete pointer types in
162        ml-nlffigen
163      - small cosmetic change to the ml-nlffi-lib's "arr" type constructor
164        (it does not need the 'f type parameter)
165    
166    ----------------------------------------------------------------------
167    Name: Matthias Blume
168    Date: 2001/05/23 14:30:00 EDT
169    Tag: Release_110_33
170    Description:
171    
172    New version number (110.33).  New bootfiles.
173    
174    ----------------------------------------------------------------------
175    Name: Matthias Blume
176    Date: 2001/05/22 18:06:00 EDT
177    Tag: blume-20010522-targets
178    Description:
179    
180    Made install.sh use file config/targets.customized if it exists, falling
181    back to config/targets if it doesn't.  This way one can have a customized
182    version of the targets file without touching the "real thing", thus
183    eliminating the constant fear of accidentally checking something bogus
184    back into the CVS repository...  (File config/targets.customized must
185    not be added to the repository!)
186    
187    ----------------------------------------------------------------------
188    Name: Matthias Blume
189    Date: 2001/05/22 16:30:00 EDT
190    Tag: blume-20010522-minitut
191    Description:
192    
193    1. Bug fix in ml-nlffigen; now (hopefully) correctly handling
194       struct returns.
195    2. Added src/ml-nlffi-lib/Doc/mini-tutorial.txt.  This is some very
196       incomplete, preliminary documentation for NLFFI.
197    
198    ----------------------------------------------------------------------
199    Name: Matthias Blume
200    Date: 2001/05/14 11:30:00 EDT
201    Tag: blume-20010514-script
202    Description:
203    
204    Some bugs in install script fixed.
205    
206    In addition to that I also made a slight change to the NLFFI API:
207    Functors generated by ml-nlffigen now take the dynamic library as a
208    straight functor argument, not as a suspended one.  (The original
209    functor code used to force the suspension right away anyway, so there
210    was nothing gained by this complication of the interface.)
211    
212    ----------------------------------------------------------------------
213    Name: Matthias Blume
214    Date: 2001/05/11 14:35:00 EDT
215    Tag: blume-20010511-ml-nlffi
216    Description:
217    
218    I finally took the plunge and added my new FFI code to the main
219    repository.  For x86-linux it is now ready for prime-time.
220    
221    There are two new subdirectories of "src":
222    
223      - ml-nlffi-lib:
224           The utility library for programs using the FFI interface.
225           Here is the implementation of $/c.cm and its associated low-level
226           partners $/c-int.cm and $/memory.cm.
227      - ml-nlffigen:
228           A stand-alone program for generating ML glue code from C source
229           code.
230    
231    Building ml-nlffigen requires $/ckit-lib.cm.
232    
233    The config/install.sh script has been updates to do the Right Thing
234    (hopefully).
235    
236    Notice that the source tree for the C-Kit will not be put under "src"
237    but directly under the installation root directory.  (This is the
238    structure that currently exists on the CVS server when you check out
239    module "sml".)  Fortunately, config/install.sh knows about this oddity.
240    
241    Bugs: No documentation yet.
242    
243    ----------------------------------------------------------------------
244    Name: Matthias Blume
245    Date: 2001/05/09 16:35:00 EDT
246    Tag: blume-20010509-cpscontract
247    Description:
248    
249    Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
250    wrapper/unwrapper elimination did not decrement usage counts and some
251    dead variables got overlooked by the dead-up logic.)
252    
253    ----------------------------------------------------------------------
254    Name: Lal George
255    Date: 2001/05/08  17:26:09 EDT
256    Tag: george-20010508-omit-frameptr
257    Description:
258    
259    Changes to implement the omit-frame-pointer optimization to support
260    raw C calls. For now, there is only support on the Intel x86, but
261    other architectures will follow as more experience is gained with this.
262    
263    
264    ----------------------------------------------------------------------
265    Name: Matthias Blume
266    Date: 2001/05/07 14:40:00 EDT
267    Tag: blume-20010507-proxies
268    Description:
269    
270    I made into "proxy libraries" all libraries that qualify for such a
271    change.  (A qualifying library is a library that has another library or
272    groups as its sole member and repeats that member's export list
273    verbatim.  A proxy library avoids this repetition by omitting its export
274    list, effectively inheriting the list that its (only) member exports.
275    See the CM manual for more explanation.)
276    The main effect is that explicit export lists for these libraries
277    do not have to be kepts in sync, making maintenance a bit easier.
278    
279    I also added copyright notices to many .cm-files.
280    
281    Last but not least, I made a new set of bootfiles.
282    
283    ----------------------------------------------------------------------
284    Name: Matthias Blume
285    Date: 2001/05/04 17:00:00 EDT
286    Tag: blume-20010504-cm-lsplit
287    Description:
288    
289    0. John merged pending changes to $/smlnj-lib.cm
290    
291    1. Allen's previous change accidentally backed out of one of Lal's
292       earlier changes.  I undid this mistake (re-introducing Lal's change).
293    
294    2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
295       within the compiler where applicable.  There is some code simplification
296       because of that.
297    
298    3. The "split" phase (in FLINT) is now part of the default list of phases.
299       Compiler.Control.LambdaSplitting.* can be used to globally control the
300       lambda-splitting (cross-module-inlining) engine.  In addition to that,
301       it can now also be controlled on a per-source basis: CM has been taught
302       a new tool parameter applicable to ML source files.
303    
304       - To turn lambda-splitting off completely:
305            local open Compiler.Control.LambdaSplitting in
306                val _ = set Off
307            end
308       - To make "no lambda-splitting" the global default (but allow per-source
309         overriding); this is the initial setting:
310            local open Compiler.Control.LambdaSplitting in
311                val _ = set (Default NONE)
312            end
313       - To make "lambda-splitting with aggressiveness a" the global default
314         (and allow per-source overriding):
315            local open Compiler.Control.LambdaSplitting in
316                val _ = set (Default (SOME a))
317            end
318    
319       - To turn lambda-splitting off for a given ML souce file (say: a.sml)
320         write (in the respective .cm-file):
321            a.sml (lambdasplitting:off)
322       - To turn lambda-splitting for a.sml on with minimal aggressiveness:
323            a.sml (lambdasplitting:on)
324       - To turn lambda-splitting for a.sml on with aggressiveness <a> (where
325         <a> is a decimal non-negative integer):
326            a.sml (lambdasplitting:<a>)
327       - To turn lambda-splitting for a.sml on with maximal aggressiveness:
328            a.sml (lambdasplitting:infinity)
329       - To use the global default for a.sml:
330            a.sml (lambdasplitting:default)
331         or simply
332            a.sml
333    
334    ----------------------------------------------------------------------
335    Name: Allen Leung
336    Date: 2001/05/04 01:57:00 EDT
337    Tag: leunga-20010504-sync
338    Description:
339    
340      MLRISC features.
341    
342      1. Fix to CMPXCHG instructions.
343      2. Changed RA interface to allow annotations in callbacks.
344      3. Added a new method to the stream interface to allow annotations updates.
345    
346    ----------------------------------------------------------------------
347    Name: Matthias Blume
348    Date: 2001/05/01 11:45:00 EDT
349    Tag: blume-20010501-pcedittmp
350    Description:
351    
352    Changed install.sh to use the current working directory instead of
353    /usr/tmp for a temporary file (pcedittmp).  The previous choice
354    of /usr/tmp caused trouble with MacOS X because of file premission
355    problems.
356    
357    ----------------------------------------------------------------------
358    Name: Matthias Blume
359    Date: 2001/04/20 11:10:00 EDT
360    Tag: blume-20010420-inMLflag
361    Description:
362    
363     - added vp_limitPtrMask to vproc-state.h
364       (for use by the raw-C-calls mechanism to implement proper interrupt
365        handling)
366     - made the ML compiler aware of various data-structure offsets so it
367       can generate code for accessing the vp_inML flag and vp_limitPtrMask
368     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
369       raw C-calls
370    
371    ----------------------------------------------------------------------
372    Name: Lal George
373    Date: 2001/04/20 09:15:28 EDT
374    Tag: george-20010420-macosX
375    Description:
376    
377     - Changes to port to Mac OS X; Darwin.
378    
379     - In the process I found that sqrt was broken on the PPC, because the
380       fsqrt instruction is not implemented.
381    
382    ----------------------------------------------------------------------
383    Name: Matthias Blume
384    Date: 2001/04/18 12:45:00 EDT
385    Tag: blume-20010418-ccalls
386    Description:
387    
388     - fixed two off-by-4 errors in the x86-specific c-calls implementation
389       (this bug prevented structure arguments containing pointers from being
390        passed correctly)
391     - changed the raw-C-call code in mlriscGen.sml in such a way that
392       structure arguments are represented as a pointer to the beginning
393       of the structure (instead of having a series of synthesized arguments,
394       one for each structure member)
395    
396     - made makeml script's verbosity level configurable via environment
397       variable (MAKEML_VERBOSITY)
398    
399     - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
400       in rawmem-x86.sml; we are now using the real thing
401    
402    ----------------------------------------------------------------------
403    Name: Matthias Blume
404    Date: 2001/03/22 16:25:00 EST
405    Tag: blume-20010322-bootfiles
406    Description:
407    
408    Created a new set of bootfiles (for your automatic installation convenience).
409    
410    ----------------------------------------------------------------------
411    Name: Matthias Blume
412    Date: 2001/03/22 15:10:00 EST
413    Tag: blume-20010322-rawmem-parcm
414    Description:
415    
416    1. All "raw memory access" primitives for the new FFI are implemented now
417       (at least on the x86).
418    2. Some further cleanup of CM's parallel make mechanism.
419    
420    ----------------------------------------------------------------------
421    Name: Matthias Blume
422    Date: 2001/03/19 17:53:00 EST
423    Tag: blume-20010319-parallel
424    Description:
425    
426    Parallel make (using compile servers) now works again.
427    
428    To this end, CM.stabilize and CMB.make have been modified to work in
429    two passes when compile servers are attached:
430       1. Compile everything, do not perform stabilization; this pass
431          uses compile servers
432       2. Stabilize everything; this pass does not use compile servers
433    If there are no compile servers, the two passes are combined into one
434    (as before).  Splitting the passes increases the inherent parallelism
435    in the dependency graph because the entire graph including all
436    libraries is available at the same time.  This, in turn, improves
437    server utilization.  The downside is that the master process will
438    have to do some extra work after compilation is done (because for
439    technical reasons it must re-read all the binfiles during stabilization).
440    
441    ----------------------------------------------------------------------
442    Name: Matthias Blume
443    Date: 2001/03/16 12:22:00 EST
444    Tag: blume-20010316-bootfiles
445    Description:
446    
447    Created a new set of bootfiles (for your automatic installation convenience).
448    
449    ----------------------------------------------------------------------
450    Name: Matthias Blume
451    Date: 2001/03/16 11:00:00 EST
452    Tag: blume-20010316-MLTREE-fixup
453    Description:
454    
455    This is a minor fixup for an (untagged) earlier commit by Allen.
456    (A file was missing).
457    
458    ----------------------------------------------------------------------
459    Name: Allen Leung
460    Date: Mon Mar  5 18:54:57 EST 2001
461    Tag: leunga-20010305-cut-support
462    
463    1. New support for alternative control-flow in MLTREE.
464       Currently we support
465    
466          FLOW_TO(CALL ...., [k1,...,kn])
467    
468       This is needed for 'cuts to' in C-- and try/handle-like constructs
469       in Moby
470    
471       New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
472    
473    2. Register Allocator
474    
475       Changes in interface [from Fermin, John]
476    
477    3. Alpha 8-bit SLL support [Fermin]
478    
479    4. All architectures
480    
481       A new module (ClusterExpandCopies) for expanding parallel copies.
482    
483    ----------------------------------------------------------------------
484    Name: Allen Leung
485    Date: 2001/02/27 23:07:00 EST
486    Tag: leunga-20010227-minor-stuff
487    
488    1. Alpha bug fix for CMOVNE
489    2. Handle mltree COND(..,FCMP ...,...)
490    3. Bug fix in simplifier
491    
492    ----------------------------------------------------------------------
493    Name: Matthias Blume
494    Date: 2001/01/30 17:50:00 EST
495    Tag: blume-20010130-sync
496    Description:
497    
498    This is just a minor update to sync my devel branch with the main brach.
499    The only visible change is the addition of some README files.
500    
501    ----------------------------------------------------------------------
502    Name: Matthias Blume
503    Date: 2001/01/12 23:30:00 JST
504    Tag: blume-20010112-bootfiles
505    Description:
506    
507    Made a new set of bootfiles that goes with the current state of the
508    repository.
509    
510    ----------------------------------------------------------------------
511    Name: Matthias Blume
512    Date: 2001/01/12 21:20:00 JST
513    Tag: blume-20010112-sync
514    Description:
515    
516    I am just flushing out some minor changes that had accumulated in
517    my private branch in order to sync with the main tree.  (This is
518    mainly because I had CVS trouble when trying to merge _into_ my
519    private branch.)
520    
521    Most people should be completely unaffected by this.
522    
523    ----------------------------------------------------------------------
524    Name: Allen Leung
525    Date: Thu Jan 11 21:03:00 EST 2001
526    Tag: leunga-20010111-labexp=mltree
527    Description:
528    
529    1.  Removed the type LabelExp and replace it by MLTree.
530    2.  Rewritten mltree-simplify with the pattern matcher tool.
531    3.  There were some bugs in alpha code generator which would break
532        64-bit code generation.
533    4.  Redo the tools to generate code with the
534    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
535        are now generated by perl scripts.
536    
537    ----------------------------------------------------------------------
538    Name: Matthias Blume
539    Date: 2001/01/10 21:55:00 JST
540    Tag: blume-20010110-rcc
541    Description:
542    
543    The RCC stuff now seems to work (but only on the x86).
544    This required hacking of the c-calls interface (and -implementation) in
545    MLRISC.
546    
547    Normal compiler users should be unaffected.
548    
549    ----------------------------------------------------------------------
550    Name: Matthias Blume
551    Date: 2001/01/09 01:20:00 JST
552    Tag: blume-20010109-rcc
553    Description:
554    
555    This is a fairly big patch, flushing out a large number of pending
556    changes that I made to my development copy over the last couple of days.
557    
558    Of practical relevance at this moment is a workaround for a pickling
559    bug that Allen ran into the other day.  The cause of the bug itself is
560    still unknown and it might be hard to fix it properly, but the
561    workaround has some merits of its own (namely somewhat reducing pickling
562    overhead for certain libraries).  Therefore, I think this solution should
563    be satisfactory at this time.
564    
565    The rest of the changes (i.e., the vast majority) has to do with my
566    ongoing efforts of providing direct support for C function calls from
567    ML.  At the moment there is a new primop "RAW_CCALL", typing magic
568    in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
569    case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
570    translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
571    handle RCC.
572    
573    The last part (the changes to mlriscGen.sml) are still known to be
574    wrong on the x86 and not implemented on all other architectures.  But
575    the infrastructure is in place. I had to change a few functor
576    signatures in the backend to be able to route the CCalls interface
577    from MLRISC there, and I had to specialize the mltree type (on the
578    x86) to include the necessary extensions. (The extensions themselves
579    were already there and redy to go in MLRISC/x86).
580    
581    Everything should be very happy as soon as someone helps me with
582    mlriscGen.sml...
583    
584    In any case, nothing of this should matter to anyone as long as the
585    new primop is not being used (which is going to be the case unless you
586    find it where I hid it :). The rest of the compiler is completely
587    unaffected.
588    
589    ----------------------------------------------------------------------
590    Name: Matthias Blume
591    Date: 2001/01/05 00:30:00 JST
592    Tag: blume-20010105-primops
593    Description:
594    
595    Added some experimental support for work that I am doing right now.
596    These changes mostly concern added primops, but there is also a new
597    experimental C library in the runtime system (but currently not enabled
598    anywhere except on Linux/X86).
599    
600    In the course of adding primops (and playing with them), I discovered that
601    Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
602    broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
603    To recover, I made type information in INL_PRIM mandatory and changed
604    prim.sml as well as built-in.sml accordingly.  The InLine structure now
605    has complete, correct type information (i.e., no bottom types).
606    
607    Since all these changes mean that we need new binfiles, I also bumped the
608    version number to 110.32.1.
609    
610    ----------------------------------------------------------------------
611    Name: Matthias Blume
612    Date: 2000/12/30 22:10:00 JST
613    Tag: blume-20001230-various
614    Description:
615    
616    Added proxy libraries for MLRISC and let MLRISC libraries refer
617    to each other using path anchors.  (See CM manual for explanation.)
618    
619    Updated CM documentation.
620    
621    Fixed some bugs in CM.
622    
623    Implemented "proxy" libraries (= syntactic sugar for CM).
624    
625    Added "-quiet" option to makeml and changed runtime system accordingly.
626    
627    Added cleanup handler for exportML to reset timers and compiler stats.
628    
629    ----------------------------------------------------------------------
630    Name: Lal George
631    Date: 2000/12/22 22:22:58 EST 2000
632    Tag: Release_110_32
633    Description:
634    
635            Infinite precision used throughout MLRISC.
636            see MLRISC/mltree/machine-int.sig
637    
638    ----------------------------------------------------------------------
639    Name: Matthias Blume
640    Date: 2000/12/22 23:16:00 JST
641    Tag: blume-20001222-warn
642    Description:
643    
644    Corrected wording and formatting of some CM warning message which I
645    broke in my previous patch.
646    
647    ----------------------------------------------------------------------
648    Name: Matthias Blume
649    Date: 2000/12/22 21:20:00 JST
650    Tag: blume-20001222-anchorenv
651    Description:
652    
653    Fixed CM's handling of anchor environments in connection with CMB.make.
654    
655    ----------------------------------------------------------------------
656    Name: Matthias Blume
657    Date: 2000/12/22 13:15:00 JST
658    Tag: blume-20001222-cleanup
659    Description:
660    
661    Removed src/cm/ffi which does not (and did not) belong here.
662    
663    ----------------------------------------------------------------------
664    Name: Matthias Blume
665    Date: 2000/12/21 23:55:00 JST
666    Tag: blume-20001221-exn
667    Description:
668    
669    Probably most important: CM no longer silently swallows all exceptions
670    in the compiler.
671    Plus: some other minor CM changes.  For example, CM now reports some
672    sizes for generated binfiles (code, data, envpickle, lambdapickle).
673    
674    ----------------------------------------------------------------------
675    Name: Matthias Blume
676    Date: 2000/12/15 00:01:05 JST
677    Tag: blume-20001215-dirtool
678    Description:
679    
680    - "dir" tool added.
681    - improvements and cleanup to Tools structure
682    - documentation updates
683    
684    ----------------------------------------------------------------------
685    Name: Allen Leung
686    Date: Thu Dec 14 03:45:24 EST 2000
687    Description:
688    Tag:  leunga-20001214-int-inf
689    Description:
690    
691       In IntInf, added these standard functions, which are missing from our
692    implementation:
693    
694        andb : int * int -> int
695        xorb : int * int -> int
696        orb  : int * int -> int
697        notb : int -> int
698         <<   : int * word -> int
699        ~>>  : int * word -> int
700    
701       Not tested, I hope they are correct.
702    
703    ----------------------------------------------------------------------
704    Name: Allen Leung
705    Date: Fri Dec  8 19:23:26 EST 2000
706    Description:
707    Tag:  leunga-20001208-nowhere
708    Description:
709    
710      Slight improvements to the 'nowhere' tool to handle OR-patterns,
711    to generate better error messages etc.  Plus a brief manual.
712    
713    ----------------------------------------------------------------------
714    Name: Lal George
715    Date: 2000/12/08 09:54:02 EST 2000
716    Tag: Release_110_31
717    Description:
718    
719    - Version 110.31
720    ----------------------------------------------------------------------
721    Name: Allen Leung
722    Date: Thu Dec  7 22:01:04 EST 2000
723    Tag:  leunga-20001207-cell-monster-hack
724    Description:
725    
726    Major MLRISC internal changes.  Affect all clients.
727    Summary:
728    
729    1.  Type CELLS.cell = int is now replaced by a datatype.
730        As a result, the old regmap is now gone.  Almost all interfaces
731        in MLRISC change as a consequence.
732    
733    2.  A new brand version of machine description tool (v3.0) that generates
734        modules expecting the new interface.  The old version is removed.
735    
736    3.  The RA interface has been further abstracted into two new functors.
737        RISC_RA and X86RA.  These functors have much simpler interfaces.
738        [See also directory MLRISC/demo.]
739    
740    4.  Some other new source->source code generation tools are available:
741    
742        a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
743        b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
744           I use this tool to generate the peephole optimizers---with the new
745           cell type changes, peephole rules are becoming difficult to write
746           without conditional pattern matching.
747    
748    5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
749        cover the entire MLRISC source tree so many things broke.
750    
751    6.  CM files have been moved to the subdirectory MLRISC/cm.
752        They are moved because there are a lot of them and they clutter up the
753        root dir.
754    
755    7.  More detailed documentation to come...
756    
757        NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
758        a makeml -rebuild first.  This is because of other other
759        changes that Matthias has made (see below).
760    
761    
762    ----------------------------------------------------------------------
763    Name: Matthias Blume
764    Date: 2000/11/30 23:12:00 JST
765    Tag: blume-20001130-filereorg
766    Description:
767    
768    Some manual updates and some file reorganizations in CM.
769    
770    ----------------------------------------------------------------------
771    Name: Matthias Blume
772    Date: 2000/11/24 17:45:00 JST
773    Tag: blume-20001124-link
774    Description:
775    
776    Drastically improved link traversal code for the case that the dynamic
777    value was already loaded at bootstrap time.  As a result, CM and CMB
778    now both load blazingly fast -- even on a very slow machine.  Also,
779    memory consumption has been further reduced by this.
780    
781    Warning: The format of the PIDMAP file has changed.  THerefore, to
782    bootstrap you have to do this:
783    
784    1. Run CMB.make
785    2. Make a symbolic link for the boot directory:
786         ln -s sml.boot.ARCH-OS xxx
787    3. "Rebuild" the boot directory:
788         ./makeml -boot xxx -rebuild sml ; rm xxx
789    4. Boot normally:
790          ./makeml
791    
792    ----------------------------------------------------------------------
793    Name: Matthias Blume
794    Date: 2000/11/21 21:20:00 JST
795    Tag: blume-20001121-tools
796    Description:
797    
798    Continued hacking on autoloading problem -- with success this time.
799    Also changed tool-plugin mechanism.  See new CM manual.
800    
801    ----------------------------------------------------------------------
802    Name: Matthias Blume
803    Date: 2000/11/19 14:30:00 JST
804    Tag:  blume-20001119-autoload
805    Description:
806    
807    Some hacking to make autoloading faster.  Success for CMB, no success
808    so far for CM.  There is a reduced structure CM' that autoloads faster.
809    (This is a temporary, non-documented hack to be eliminated again when
810    the general problem is solved.)
811    
812    ----------------------------------------------------------------------
813    Name: Matthias Blume
814    Date: 2000/11/17 14:10:00 JST
815    Tag: blume-20001117-pickle-lib
816    Description:
817    
818    1. Eliminated comp-lib.cm
819    2. Made pickle-lib.cm
820    3. Eliminated all uses of intset.sml (from comp-lib.cm)
821    4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
822       equivalent constructs from smlnj-lib.cm (INtHashTable).
823    5. Point 4. also goes for those uses of intmap.* in MLRISC.
824       Duplicated intmap modules thrown out.
825    6. Hunted down all duplicated SCC code and replaced it with
826       equivalent stuff (GraphSCCFn from smlnj-lib.cm).
827    7. Rewrote Feedback module.
828    8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
829       should be thrown out and equivalent modules from smlnj-lib.cm
830       should be used (IntRedBlackSet, IntListSet, ...).
831    
832    Confirmed that compiler compiles to fixpoint.
833    
834    ----------------------------------------------------------------------
835    Name: Allen Leung
836    Date: 2000/11/10 18:00:00
837    Tag: leunga-20001110-new-x86-fp
838    
839    A new x86 floating point code generator has been added.
840    By default this is turned off.  To turn this on, do:
841    
842        CM.autoload "$smlnj/compiler.cm";
843        Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
844    
845    Changes:
846    
847    1.  Changed FTAN to FPTAN so that the assembly output is correct.
848    2.  Changed the extension callback for FTANGENT to generate:
849    
850              fptan
851              fstp  %st(0)
852        instead of
853              fptan
854              fstpl ftempmem
855    
856    3.  Numerous assembly fixes for x86.
857    
858    5.  Cleaned up the machine code output module x86/x86MC.sml and added
859        support for a whole bunch of instructions and addressing modes:
860    
861          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
862          faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
863          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
864          fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
865          fxch %st(n)
866          fld %st(n)
867          fst %st(n)
868          fst mem
869          fstp %st(n)
870          fucom %st(n)
871          fucomp %st(n)
872    
873        All these are now generated when the fast fp mode is turned on.
874    
875    6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
876    
877    ----------------------------------------------------------------------
878    Name: Matthias Blume
879    Date: 2000/11/09 11:20:00 JST
880    Tag: blume-20001109-scc
881    Description:
882    
883    Eliminated some code duplication:
884    
885    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
886       (Otherwise the functor is useless.)
887    2. Used GraphSCCFn where SCCUtilFun was used previously.
888    3. Got rid of SCCUtilFun (in comp-lib.cm).
889    
890    ----------------------------------------------------------------------
891    Name: Lal George
892    Date: 2000/11/06 09:02:21 EST 2000
893    Tag: Release_110_30
894    Description:
895    
896    - Version 110.30
897  ----------------------------------------------------------------------  ----------------------------------------------------------------------
898  Name: Matthias Blume  Name: Matthias Blume
899  Date: 2000/07/02 15:36:00 JST  Date: 2000/11/04 14:45:00
900    Tag: blume-20001104-mlbuild
901    Description:
902    
903    - Made ml-build faster on startup.
904    - Documentation fixes.
905    
906    ----------------------------------------------------------------------
907    Name: Matthias Blume
908    Date: 2000/11/02 17:00:00 JST
909    Tag: blume-20001102-condcomp
910    Description:
911    
912    - Small tweaks to pickler -- new BOOTFILES!
913    - Version bumped to 110.29.2.
914    - Added conditional compilation facility to init.cmi (see comment there).
915    ----------------------------------------------------------------------
916    Name: Allen Leung
917    Date: 2000/10/23 19:31:00
918    Tag: leunga-20001023-demo-ra
919    
920    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
921    2. Test programs for the graph library updated
922    3. Some new MLRISC demo programs added
923    
924    ----------------------------------------------------------------------
925    Name: Matthias Blume
926    Date: 2000/08/31 22:15:00 JST
927    Tag: blume-20001017-errmsg
928    Description:
929    
930    More error message grief: Where there used to be no messages, there
931    now were some that had bogus error regions.  Fixed.
932    
933    ----------------------------------------------------------------------
934    Name: Matthias Blume
935    Date: 2000/08/31 17:30:00 JST
936    Tag: blume-20001017-v110p29p1
937    Description:
938    
939    I made a version 110.29.1 with new bootfiles.
940    
941    Changes:  Modified pickler/unpickler for faster and leaner unpickling.
942              CM documentation changes and a small bugfix in CM's error reporting.
943    
944    ----------------------------------------------------------------------
945    Name: Lal George
946    Date: 2000/09/27 14:42:35 EDT
947    Tag: george-20000927-nodestatus
948    Description:
949    
950    Changed the type of the nodestatus, so that:
951    
952            SPILLED(~1)             is now SPILLED
953            SPILLED(m) where m>=0   is now MEMREG(m)
954            SPILLED(s) where s<~1   is now SPILL_LOC(~s)
955    
956    ----------------------------------------------------------------------
957    Name: Matthias Blume
958    Date: 2000/09/07 14:45:00 JST
959    Tag: blume-20000907-cmerrmsg
960    Description:
961    
962    Small tweak to CM to avoid getting ML syntax error messages twice.
963    
964    ----------------------------------------------------------------------
965    Name: Matthias Blume
966    Date: 2000/08/31 18:00:00 JST
967    Tag: blume-20000831-cvsbootfiles
968    Description:
969    
970    New URL for boot files (because the 110.29 files on the BL server do
971    now work correctly with my updated install scripts for yacc and lex).
972    
973    ----------------------------------------------------------------------
974    Name: Matthias Blume
975    Date: 2000/08/08 12:33:00 JST
976    Tag: blume-20000808-manual
977    Description:
978    
979    Tiny update to CM manual.
980    
981    ----------------------------------------------------------------------
982    Name: Allen Leung
983    Date: 2000/08/7 19:31:00
984    Tag: leunga-20000807-a-whole-bunch-of-stuff
985    
986      Moby, C--, SSA, x86, machine descriptions etc.  Should only affect C--
987    and Mobdy.
988    
989    1.  x86
990    
991       a.  Fixes to peephole module by John and Dan.
992       b.  Assembly fix to SETcc by Allen.
993       c.  Fix to c-call by John.
994       d.  Fix to spilling by John.  (This one deals with the missing FSTPT case)
995       e.  Instruction selection optimization to SETcc as suggested by John.
996    
997           For example,
998    
999            MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
1000    
1001           should generate:
1002    
1003            MOVL a, x
1004            SUBL b, x
1005            SHRL 31, x
1006    
1007    2.  IR stuff
1008    
1009         A bunch of new DJ-graph related algorithms added.  These
1010         speed up SSA construction.
1011    
1012    3.  SSA + Scheduling
1013    
1014         Added code for SSA and scheduling to the repository
1015    
1016    ----------------------------------------------------------------------
1017    Name: Lal George
1018    Date: 2000/07/27 11:53:14 EDT
1019    
1020    Tag: lal-20000727-linux-ppc
1021    Description:
1022    
1023     Made changes to support Linux PPC.
1024     p.s. I have confirmation that the 110.29 boot files work fine.
1025    
1026    ----------------------------------------------------------------------
1027    Name: Matthias Blume
1028    Date: 2000/07/27 17:40:00 JST
1029    Tag: blume-20000727-scripts
1030    Description:
1031    
1032    !!!! WARNING !!!!
1033    You must recompile the runtime system!
1034    !!!! WARNING !!!!
1035    
1036    This is basically another round of script-enhancements:
1037    
1038    1. sml, ml-build, and ml-makedepend accept options -D and -U to define
1039       and undefine CM preprocessor symbols.
1040    
1041    2. ml-build avoids generating a new heap image if it finds that the
1042       existing one is still ok.  (The condition is that no ML file had to
1043       be recompiled and all ML files are found to be older that the heap
1044       file.)
1045    
1046       To make this work smoothly, I also hacked the runtime system as
1047       well as SMLofNJ.SysInfo to get access to the heap image suffix
1048       (.sparc-solaris, ...) that is currently being used.
1049    
1050       Moreover, the signature of CM.mk_standalone has changed.  See the
1051       CM manual.
1052    
1053    3. ml-makedepend accepts additional options -n, -a, and -o.  (See the
1054       CM manual for details.)
1055    
1056    4. More CM manual updates:
1057        - all of the above has been documented.
1058        - there is now a section describing the (CM-related) command line
1059          arguments that are accepted by the "sml" command
1060    
1061    ----------------------------------------------------------------------
1062    Name: Matthias Blume
1063    Date: 2000/07/25 16:20:00 JST
1064    Tag: blume-20000725-makedepend
1065    Description:
1066    
1067    Added a script called ml-makedepend.  This can be used in makefiles
1068    for Unix' make in a way very similar to the "makedepend" command for
1069    C.
1070    
1071    The script internally uses function CM.sources.
1072    
1073    Synopsis:
1074    
1075        ml-makedepend [-f makefile] cmfile targetname
1076    
1077    The default for the makefile is "makefile" (or "Makefile" should
1078    "makefile" not exist).
1079    
1080    ml-makedepend adds a cmfile/targetname-specific section to this
1081    makefile (after removing the previous version of this section).  The
1082    section contains a single dependency specification with targetname on
1083    the LHS (targetname is an arbitrary name), and a list of files derived
1084    from the cmfile on the RHS.  Some of the files on the RHS are
1085    ARCH/OPSYS-specific.  Therefore, ml-makedepend inserts references to
1086    "make" variables $(ARCH) and $(OPSYS) in place of the corresponding
1087    path names.  The makefile writer is responsible for making sure that
1088    these variables have correct at the time "make" is invoked.
1089    
1090    ----------------------------------------------------------------------
1091    Name: Matthias Blume
1092    Date: 2000/07/22 23:30:00 JST
1093    Tag: blume-20000722-urlupdate
1094    Description:
1095    
1096    Changed BOOT and config/srcarchiveurl to point to BL server:
1097    
1098        ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
1099    
1100    ----------------------------------------------------------------------
1101    Name: Matthias Blume
1102    Date: 2000/07/18 18:00:00 JST
1103    Tag: blume-20000718-Version_110_29
1104    Description:
1105    
1106    1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
1107    
1108    2. Updated config/version to 110.29
1109    
1110    3. Updated config/srcarchiveurl
1111    
1112    3. New boot files!
1113       ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
1114    
1115    ----------------------------------------------------------------------
1116    Name: Matthias Blume
1117    Date: 2000/07/11 13:58:00 JST
1118    Tag: blume-20000711-doctypo
1119    Description:
1120    
1121    Fixed a few typos in CM manual.
1122    
1123    ----------------------------------------------------------------------
1124    Name: Allen Leung
1125    Date: 2000/06/15 00:38:00
1126    Tag: leunga-20000704-sparc-x86
1127    
1128    1. x86 peephole improvement sp += k; sp -= k => nop  [from John]
1129    2. fix to x86 RET bug [found by Dan Grossman]
1130    3. sparc assembly bug fix for ticc instructions [found by Fermin]
1131    
1132       Affects c-- and moby only
1133    
1134    ----------------------------------------------------------------------
1135    Name: Matthias Blume
1136    Date: 2000/07/04 15:26:00
1137    Tag: blume-20000704-trigger
1138    Description:
1139    
1140    1. Improvements to CM manual.
1141    2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
1142       of getting a back-trace.  The function, when called, raises an
1143       internal exception which explicitly carries the full back-trace history,
1144       so it is unaffected by any intervening handle-raise pairs ("trivial"
1145       or not).  The interactive loop will print that history once it arrives
1146       at top level.
1147       Short of having all exceptions implicitly carry the full history, the
1148       recommended way of using this facility is:
1149         - compile your program with instrumentation "on"
1150         - run it, when it raises an exception, look at the history
1151         - if the history is "cut off" because of some handler, go and modify
1152           your program so that it explicitly calls BTrace.trigger
1153         - recompile (still instrumented), and rerun; look at the full history
1154    
1155    ----------------------------------------------------------------------
1156    Name: Matthias Blume
1157    Date: 2000/07/03 15:36:00 JST
1158  Tag: blume-20000702-manual  Tag: blume-20000702-manual
1159  Description:  Description:
1160    
1161  Small corrections and updates to CM manual.  Small corrections and updates to CM manual.
1162    
1163  ----------------------------------------------------------------------  ----------------------------------------------------------------------
1164  Name: Matthias Blumen  Name: Matthias Blume
1165  Date: 2000/06/29 16:04:00 JST  Date: 2000/06/29 16:04:00 JST
1166  Tag: blume-20000629-yacctool  Tag: blume-20000629-yacctool
1167  Description:  Description:

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