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Diff of /sml/trunk/HISTORY

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revision 595, Wed Apr 5 03:30:17 2000 UTC revision 815, Fri May 4 05:09:10 2001 UTC
# Line 12  Line 12 
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14  ----------------------------------------------------------------------  ----------------------------------------------------------------------
15    Name: Allen Leung
16    Date: 2001/05/04 01:57:00 EDT
17    Tag: leunga-20010504-sync
18    Description:
19    
20      MLRISC features.
21    
22      1. Fix to CMPXCHG instructions.
23      2. Changed RA interface to allow annotations in callbacks.
24      3. Added a new method to the stream interface to allow annotations updates.
25    
26    ----------------------------------------------------------------------
27    Name: Matthias Blume
28    Date: 2001/05/01 11:45:00 EDT
29    Tag: blume-20010501-pcedittmp
30    Description:
31    
32    Changed install.sh to use the current working directory instead of
33    /usr/tmp for a temporary file (pcedittmp).  The previous choice
34    of /usr/tmp caused trouble with MacOS X because of file premission
35    problems.
36    
37    ----------------------------------------------------------------------
38    Name: Matthias Blume
39    Date: 2001/04/20 11:10:00 EDT
40    Tag: blume-20010420-inMLflag
41    Description:
42    
43     - added vp_limitPtrMask to vproc-state.h
44       (for use by the raw-C-calls mechanism to implement proper interrupt
45        handling)
46     - made the ML compiler aware of various data-structure offsets so it
47       can generate code for accessing the vp_inML flag and vp_limitPtrMask
48     - tweaked mlriscGen.sml to have it emit interrupt-handling code for
49       raw C-calls
50    
51    ----------------------------------------------------------------------
52    Name: Lal George
53    Date: 2001/04/20 09:15:28 EDT
54    Tag: george-20010420-macosX
55    Description:
56    
57     - Changes to port to Mac OS X; Darwin.
58    
59     - In the process I found that sqrt was broken on the PPC, because the
60       fsqrt instruction is not implemented.
61    
62    ----------------------------------------------------------------------
63    Name: Matthias Blume
64    Date: 2001/04/18 12:45:00 EDT
65    Tag: blume-20010418-ccalls
66    Description:
67    
68     - fixed two off-by-4 errors in the x86-specific c-calls implementation
69       (this bug prevented structure arguments containing pointers from being
70        passed correctly)
71     - changed the raw-C-call code in mlriscGen.sml in such a way that
72       structure arguments are represented as a pointer to the beginning
73       of the structure (instead of having a series of synthesized arguments,
74       one for each structure member)
75    
76     - made makeml script's verbosity level configurable via environment
77       variable (MAKEML_VERBOSITY)
78    
79     - eliminated placeholder implementations for f32l, w16s, i16s, and f32s
80       in rawmem-x86.sml; we are now using the real thing
81    
82    ----------------------------------------------------------------------
83    Name: Matthias Blume
84    Date: 2001/03/22 16:25:00 EST
85    Tag: blume-20010322-bootfiles
86    Description:
87    
88    Created a new set of bootfiles (for your automatic installation convenience).
89    
90    ----------------------------------------------------------------------
91    Name: Matthias Blume
92    Date: 2001/03/22 15:10:00 EST
93    Tag: blume-20010322-rawmem-parcm
94    Description:
95    
96    1. All "raw memory access" primitives for the new FFI are implemented now
97       (at least on the x86).
98    2. Some further cleanup of CM's parallel make mechanism.
99    
100    ----------------------------------------------------------------------
101    Name: Matthias Blume
102    Date: 2001/03/19 17:53:00 EST
103    Tag: blume-20010319-parallel
104    Description:
105    
106    Parallel make (using compile servers) now works again.
107    
108    To this end, CM.stabilize and CMB.make have been modified to work in
109    two passes when compile servers are attached:
110       1. Compile everything, do not perform stabilization; this pass
111          uses compile servers
112       2. Stabilize everything; this pass does not use compile servers
113    If there are no compile servers, the two passes are combined into one
114    (as before).  Splitting the passes increases the inherent parallelism
115    in the dependency graph because the entire graph including all
116    libraries is available at the same time.  This, in turn, improves
117    server utilization.  The downside is that the master process will
118    have to do some extra work after compilation is done (because for
119    technical reasons it must re-read all the binfiles during stabilization).
120    
121    ----------------------------------------------------------------------
122    Name: Matthias Blume
123    Date: 2001/03/16 12:22:00 EST
124    Tag: blume-20010316-bootfiles
125    Description:
126    
127    Created a new set of bootfiles (for your automatic installation convenience).
128    
129    ----------------------------------------------------------------------
130    Name: Matthias Blume
131    Date: 2001/03/16 11:00:00 EST
132    Tag: blume-20010316-MLTREE-fixup
133    Description:
134    
135    This is a minor fixup for an (untagged) earlier commit by Allen.
136    (A file was missing).
137    
138    ----------------------------------------------------------------------
139    Name: Allen Leung
140    Date: Mon Mar  5 18:54:57 EST 2001
141    Tag: leunga-20010305-cut-support
142    
143    1. New support for alternative control-flow in MLTREE.
144       Currently we support
145    
146          FLOW_TO(CALL ...., [k1,...,kn])
147    
148       This is needed for 'cuts to' in C-- and try/handle-like constructs
149       in Moby
150    
151       New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
152    
153    2. Register Allocator
154    
155       Changes in interface [from Fermin, John]
156    
157    3. Alpha 8-bit SLL support [Fermin]
158    
159    4. All architectures
160    
161       A new module (ClusterExpandCopies) for expanding parallel copies.
162    
163    ----------------------------------------------------------------------
164    Name: Allen Leung
165    Date: 2001/02/27 23:07:00 EST
166    Tag: leunga-20010227-minor-stuff
167    
168    1. Alpha bug fix for CMOVNE
169    2. Handle mltree COND(..,FCMP ...,...)
170    3. Bug fix in simplifier
171    
172    ----------------------------------------------------------------------
173    Name: Matthias Blume
174    Date: 2001/01/30 17:50:00 EST
175    Tag: blume-20010130-sync
176    Description:
177    
178    This is just a minor update to sync my devel branch with the main brach.
179    The only visible change is the addition of some README files.
180    
181    ----------------------------------------------------------------------
182    Name: Matthias Blume
183    Date: 2001/01/12 23:30:00 JST
184    Tag: blume-20010112-bootfiles
185    Description:
186    
187    Made a new set of bootfiles that goes with the current state of the
188    repository.
189    
190    ----------------------------------------------------------------------
191    Name: Matthias Blume
192    Date: 2001/01/12 21:20:00 JST
193    Tag: blume-20010112-sync
194    Description:
195    
196    I am just flushing out some minor changes that had accumulated in
197    my private branch in order to sync with the main tree.  (This is
198    mainly because I had CVS trouble when trying to merge _into_ my
199    private branch.)
200    
201    Most people should be completely unaffected by this.
202    
203    ----------------------------------------------------------------------
204    Name: Allen Leung
205    Date: Thu Jan 11 21:03:00 EST 2001
206    Tag: leunga-20010111-labexp=mltree
207    Description:
208    
209    1.  Removed the type LabelExp and replace it by MLTree.
210    2.  Rewritten mltree-simplify with the pattern matcher tool.
211    3.  There were some bugs in alpha code generator which would break
212        64-bit code generation.
213    4.  Redo the tools to generate code with the
214    5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
215        are now generated by perl scripts.
216    
217    ----------------------------------------------------------------------
218    Name: Matthias Blume
219    Date: 2001/01/10 21:55:00 JST
220    Tag: blume-20010110-rcc
221    Description:
222    
223    The RCC stuff now seems to work (but only on the x86).
224    This required hacking of the c-calls interface (and -implementation) in
225    MLRISC.
226    
227    Normal compiler users should be unaffected.
228    
229    ----------------------------------------------------------------------
230    Name: Matthias Blume
231    Date: 2001/01/09 01:20:00 JST
232    Tag: blume-20010109-rcc
233    Description:
234    
235    This is a fairly big patch, flushing out a large number of pending
236    changes that I made to my development copy over the last couple of days.
237    
238    Of practical relevance at this moment is a workaround for a pickling
239    bug that Allen ran into the other day.  The cause of the bug itself is
240    still unknown and it might be hard to fix it properly, but the
241    workaround has some merits of its own (namely somewhat reducing pickling
242    overhead for certain libraries).  Therefore, I think this solution should
243    be satisfactory at this time.
244    
245    The rest of the changes (i.e., the vast majority) has to do with my
246    ongoing efforts of providing direct support for C function calls from
247    ML.  At the moment there is a new primop "RAW_CCALL", typing magic
248    in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
249    case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
250    translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
251    handle RCC.
252    
253    The last part (the changes to mlriscGen.sml) are still known to be
254    wrong on the x86 and not implemented on all other architectures.  But
255    the infrastructure is in place. I had to change a few functor
256    signatures in the backend to be able to route the CCalls interface
257    from MLRISC there, and I had to specialize the mltree type (on the
258    x86) to include the necessary extensions. (The extensions themselves
259    were already there and redy to go in MLRISC/x86).
260    
261    Everything should be very happy as soon as someone helps me with
262    mlriscGen.sml...
263    
264    In any case, nothing of this should matter to anyone as long as the
265    new primop is not being used (which is going to be the case unless you
266    find it where I hid it :). The rest of the compiler is completely
267    unaffected.
268    
269    ----------------------------------------------------------------------
270    Name: Matthias Blume
271    Date: 2001/01/05 00:30:00 JST
272    Tag: blume-20010105-primops
273    Description:
274    
275    Added some experimental support for work that I am doing right now.
276    These changes mostly concern added primops, but there is also a new
277    experimental C library in the runtime system (but currently not enabled
278    anywhere except on Linux/X86).
279    
280    In the course of adding primops (and playing with them), I discovered that
281    Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
282    broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
283    To recover, I made type information in INL_PRIM mandatory and changed
284    prim.sml as well as built-in.sml accordingly.  The InLine structure now
285    has complete, correct type information (i.e., no bottom types).
286    
287    Since all these changes mean that we need new binfiles, I also bumped the
288    version number to 110.32.1.
289    
290    ----------------------------------------------------------------------
291    Name: Matthias Blume
292    Date: 2000/12/30 22:10:00 JST
293    Tag: blume-20001230-various
294    Description:
295    
296    Added proxy libraries for MLRISC and let MLRISC libraries refer
297    to each other using path anchors.  (See CM manual for explanation.)
298    
299    Updated CM documentation.
300    
301    Fixed some bugs in CM.
302    
303    Implemented "proxy" libraries (= syntactic sugar for CM).
304    
305    Added "-quiet" option to makeml and changed runtime system accordingly.
306    
307    Added cleanup handler for exportML to reset timers and compiler stats.
308    
309    ----------------------------------------------------------------------
310    Name: Lal George
311    Date: 2000/12/22 22:22:58 EST 2000
312    Tag: Release_110_32
313    Description:
314    
315            Infinite precision used throughout MLRISC.
316            see MLRISC/mltree/machine-int.sig
317    
318    ----------------------------------------------------------------------
319    Name: Matthias Blume
320    Date: 2000/12/22 23:16:00 JST
321    Tag: blume-20001222-warn
322    Description:
323    
324    Corrected wording and formatting of some CM warning message which I
325    broke in my previous patch.
326    
327    ----------------------------------------------------------------------
328    Name: Matthias Blume
329    Date: 2000/12/22 21:20:00 JST
330    Tag: blume-20001222-anchorenv
331    Description:
332    
333    Fixed CM's handling of anchor environments in connection with CMB.make.
334    
335    ----------------------------------------------------------------------
336    Name: Matthias Blume
337    Date: 2000/12/22 13:15:00 JST
338    Tag: blume-20001222-cleanup
339    Description:
340    
341    Removed src/cm/ffi which does not (and did not) belong here.
342    
343    ----------------------------------------------------------------------
344    Name: Matthias Blume
345    Date: 2000/12/21 23:55:00 JST
346    Tag: blume-20001221-exn
347    Description:
348    
349    Probably most important: CM no longer silently swallows all exceptions
350    in the compiler.
351    Plus: some other minor CM changes.  For example, CM now reports some
352    sizes for generated binfiles (code, data, envpickle, lambdapickle).
353    
354    ----------------------------------------------------------------------
355    Name: Matthias Blume
356    Date: 2000/12/15 00:01:05 JST
357    Tag: blume-20001215-dirtool
358    Description:
359    
360    - "dir" tool added.
361    - improvements and cleanup to Tools structure
362    - documentation updates
363    
364    ----------------------------------------------------------------------
365    Name: Allen Leung
366    Date: Thu Dec 14 03:45:24 EST 2000
367    Description:
368    Tag:  leunga-20001214-int-inf
369    Description:
370    
371       In IntInf, added these standard functions, which are missing from our
372    implementation:
373    
374        andb : int * int -> int
375        xorb : int * int -> int
376        orb  : int * int -> int
377        notb : int -> int
378         <<   : int * word -> int
379        ~>>  : int * word -> int
380    
381       Not tested, I hope they are correct.
382    
383    ----------------------------------------------------------------------
384    Name: Allen Leung
385    Date: Fri Dec  8 19:23:26 EST 2000
386    Description:
387    Tag:  leunga-20001208-nowhere
388    Description:
389    
390      Slight improvements to the 'nowhere' tool to handle OR-patterns,
391    to generate better error messages etc.  Plus a brief manual.
392    
393    ----------------------------------------------------------------------
394    Name: Lal George
395    Date: 2000/12/08 09:54:02 EST 2000
396    Tag: Release_110_31
397    Description:
398    
399    - Version 110.31
400    ----------------------------------------------------------------------
401    Name: Allen Leung
402    Date: Thu Dec  7 22:01:04 EST 2000
403    Tag:  leunga-20001207-cell-monster-hack
404    Description:
405    
406    Major MLRISC internal changes.  Affect all clients.
407    Summary:
408    
409    1.  Type CELLS.cell = int is now replaced by a datatype.
410        As a result, the old regmap is now gone.  Almost all interfaces
411        in MLRISC change as a consequence.
412    
413    2.  A new brand version of machine description tool (v3.0) that generates
414        modules expecting the new interface.  The old version is removed.
415    
416    3.  The RA interface has been further abstracted into two new functors.
417        RISC_RA and X86RA.  These functors have much simpler interfaces.
418        [See also directory MLRISC/demo.]
419    
420    4.  Some other new source->source code generation tools are available:
421    
422        a. MLRISC/Tools/RewriteGen -- generate rewriters from rules.
423        b. MLRISC/Tools/WhereGen -- expands conditional pattern matching rules.
424           I use this tool to generate the peephole optimizers---with the new
425           cell type changes, peephole rules are becoming difficult to write
426           without conditional pattern matching.
427    
428    5.  More Intmap -> IntHashTable change.  Previous changes by Matthias didn't
429        cover the entire MLRISC source tree so many things broke.
430    
431    6.  CM files have been moved to the subdirectory MLRISC/cm.
432        They are moved because there are a lot of them and they clutter up the
433        root dir.
434    
435    7.  More detailed documentation to come...
436    
437        NOTE: To rebuild from 110.30 (ftp distribution), you'll have to do
438        a makeml -rebuild first.  This is because of other other
439        changes that Matthias has made (see below).
440    
441    
442    ----------------------------------------------------------------------
443    Name: Matthias Blume
444    Date: 2000/11/30 23:12:00 JST
445    Tag: blume-20001130-filereorg
446    Description:
447    
448    Some manual updates and some file reorganizations in CM.
449    
450    ----------------------------------------------------------------------
451    Name: Matthias Blume
452    Date: 2000/11/24 17:45:00 JST
453    Tag: blume-20001124-link
454    Description:
455    
456    Drastically improved link traversal code for the case that the dynamic
457    value was already loaded at bootstrap time.  As a result, CM and CMB
458    now both load blazingly fast -- even on a very slow machine.  Also,
459    memory consumption has been further reduced by this.
460    
461    Warning: The format of the PIDMAP file has changed.  THerefore, to
462    bootstrap you have to do this:
463    
464    1. Run CMB.make
465    2. Make a symbolic link for the boot directory:
466         ln -s sml.boot.ARCH-OS xxx
467    3. "Rebuild" the boot directory:
468         ./makeml -boot xxx -rebuild sml ; rm xxx
469    4. Boot normally:
470          ./makeml
471    
472    ----------------------------------------------------------------------
473    Name: Matthias Blume
474    Date: 2000/11/21 21:20:00 JST
475    Tag: blume-20001121-tools
476    Description:
477    
478    Continued hacking on autoloading problem -- with success this time.
479    Also changed tool-plugin mechanism.  See new CM manual.
480    
481    ----------------------------------------------------------------------
482    Name: Matthias Blume
483    Date: 2000/11/19 14:30:00 JST
484    Tag:  blume-20001119-autoload
485    Description:
486    
487    Some hacking to make autoloading faster.  Success for CMB, no success
488    so far for CM.  There is a reduced structure CM' that autoloads faster.
489    (This is a temporary, non-documented hack to be eliminated again when
490    the general problem is solved.)
491    
492    ----------------------------------------------------------------------
493    Name: Matthias Blume
494    Date: 2000/11/17 14:10:00 JST
495    Tag: blume-20001117-pickle-lib
496    Description:
497    
498    1. Eliminated comp-lib.cm
499    2. Made pickle-lib.cm
500    3. Eliminated all uses of intset.sml (from comp-lib.cm)
501    4. Replaced all uses of intmap.{sig,sml} (from comp-lib.cm) with
502       equivalent constructs from smlnj-lib.cm (INtHashTable).
503    5. Point 4. also goes for those uses of intmap.* in MLRISC.
504       Duplicated intmap modules thrown out.
505    6. Hunted down all duplicated SCC code and replaced it with
506       equivalent stuff (GraphSCCFn from smlnj-lib.cm).
507    7. Rewrote Feedback module.
508    8. Moved sortedlist.sml into viscomp-lib.cm.  Eventually it
509       should be thrown out and equivalent modules from smlnj-lib.cm
510       should be used (IntRedBlackSet, IntListSet, ...).
511    
512    Confirmed that compiler compiles to fixpoint.
513    
514    ----------------------------------------------------------------------
515    Name: Allen Leung
516    Date: 2000/11/10 18:00:00
517    Tag: leunga-20001110-new-x86-fp
518    
519    A new x86 floating point code generator has been added.
520    By default this is turned off.  To turn this on, do:
521    
522        CM.autoload "$smlnj/compiler.cm";
523        Compiler.Control.MLRISC.getFlag "x86-fast-fp" := true;
524    
525    Changes:
526    
527    1.  Changed FTAN to FPTAN so that the assembly output is correct.
528    2.  Changed the extension callback for FTANGENT to generate:
529    
530              fptan
531              fstp  %st(0)
532        instead of
533              fptan
534              fstpl ftempmem
535    
536    3.  Numerous assembly fixes for x86.
537    
538    5.  Cleaned up the machine code output module x86/x86MC.sml and added
539        support for a whole bunch of instructions and addressing modes:
540    
541          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st, %st(n)
542          faddp/fsubp/fsubrp/fmulp/fdivp/fdivrp  %st, %st(n)
543          fadd/fsub/fsubr/fmul/fdiv/fdivr  %st(n), %st
544          fiadd/fisub/fisubr/fimul/fidiv/fidivr mem
545          fxch %st(n)
546          fld %st(n)
547          fst %st(n)
548          fst mem
549          fstp %st(n)
550          fucom %st(n)
551          fucomp %st(n)
552    
553        All these are now generated when the fast fp mode is turned on.
554    
555    6.  Removed the dedicated registers %st(0), ..., %st(7) from X86CpsRegs
556    
557    ----------------------------------------------------------------------
558    Name: Matthias Blume
559    Date: 2000/11/09 11:20:00 JST
560    Tag: blume-20001109-scc
561    Description:
562    
563    Eliminated some code duplication:
564    
565    1. Added "where" clause to GraphSCCFn in SML/NJ Library.
566       (Otherwise the functor is useless.)
567    2. Used GraphSCCFn where SCCUtilFun was used previously.
568    3. Got rid of SCCUtilFun (in comp-lib.cm).
569    
570    ----------------------------------------------------------------------
571    Name: Lal George
572    Date: 2000/11/06 09:02:21 EST 2000
573    Tag: Release_110_30
574    Description:
575    
576    - Version 110.30
577    ----------------------------------------------------------------------
578    Name: Matthias Blume
579    Date: 2000/11/04 14:45:00
580    Tag: blume-20001104-mlbuild
581    Description:
582    
583    - Made ml-build faster on startup.
584    - Documentation fixes.
585    
586    ----------------------------------------------------------------------
587    Name: Matthias Blume
588    Date: 2000/11/02 17:00:00 JST
589    Tag: blume-20001102-condcomp
590    Description:
591    
592    - Small tweaks to pickler -- new BOOTFILES!
593    - Version bumped to 110.29.2.
594    - Added conditional compilation facility to init.cmi (see comment there).
595    ----------------------------------------------------------------------
596    Name: Allen Leung
597    Date: 2000/10/23 19:31:00
598    Tag: leunga-20001023-demo-ra
599    
600    1. Minor RA changes that improves spilling on x86 (affects Moby and C-- only)
601    2. Test programs for the graph library updated
602    3. Some new MLRISC demo programs added
603    
604    ----------------------------------------------------------------------
605    Name: Matthias Blume
606    Date: 2000/08/31 22:15:00 JST
607    Tag: blume-20001017-errmsg
608    Description:
609    
610    More error message grief: Where there used to be no messages, there
611    now were some that had bogus error regions.  Fixed.
612    
613    ----------------------------------------------------------------------
614    Name: Matthias Blume
615    Date: 2000/08/31 17:30:00 JST
616    Tag: blume-20001017-v110p29p1
617    Description:
618    
619    I made a version 110.29.1 with new bootfiles.
620    
621    Changes:  Modified pickler/unpickler for faster and leaner unpickling.
622              CM documentation changes and a small bugfix in CM's error reporting.
623    
624    ----------------------------------------------------------------------
625    Name: Lal George
626    Date: 2000/09/27 14:42:35 EDT
627    Tag: george-20000927-nodestatus
628    Description:
629    
630    Changed the type of the nodestatus, so that:
631    
632            SPILLED(~1)             is now SPILLED
633            SPILLED(m) where m>=0   is now MEMREG(m)
634            SPILLED(s) where s<~1   is now SPILL_LOC(~s)
635    
636    ----------------------------------------------------------------------
637    Name: Matthias Blume
638    Date: 2000/09/07 14:45:00 JST
639    Tag: blume-20000907-cmerrmsg
640    Description:
641    
642    Small tweak to CM to avoid getting ML syntax error messages twice.
643    
644    ----------------------------------------------------------------------
645    Name: Matthias Blume
646    Date: 2000/08/31 18:00:00 JST
647    Tag: blume-20000831-cvsbootfiles
648    Description:
649    
650    New URL for boot files (because the 110.29 files on the BL server do
651    now work correctly with my updated install scripts for yacc and lex).
652    
653    ----------------------------------------------------------------------
654    Name: Matthias Blume
655    Date: 2000/08/08 12:33:00 JST
656    Tag: blume-20000808-manual
657    Description:
658    
659    Tiny update to CM manual.
660    
661    ----------------------------------------------------------------------
662    Name: Allen Leung
663    Date: 2000/08/7 19:31:00
664    Tag: leunga-20000807-a-whole-bunch-of-stuff
665    
666      Moby, C--, SSA, x86, machine descriptions etc.  Should only affect C--
667    and Mobdy.
668    
669    1.  x86
670    
671       a.  Fixes to peephole module by John and Dan.
672       b.  Assembly fix to SETcc by Allen.
673       c.  Fix to c-call by John.
674       d.  Fix to spilling by John.  (This one deals with the missing FSTPT case)
675       e.  Instruction selection optimization to SETcc as suggested by John.
676    
677           For example,
678    
679            MV(32, x, COND(32, CMP(32, LT, a, b), LI 1, LI 0))
680    
681           should generate:
682    
683            MOVL a, x
684            SUBL b, x
685            SHRL 31, x
686    
687    2.  IR stuff
688    
689         A bunch of new DJ-graph related algorithms added.  These
690         speed up SSA construction.
691    
692    3.  SSA + Scheduling
693    
694         Added code for SSA and scheduling to the repository
695    
696    ----------------------------------------------------------------------
697    Name: Lal George
698    Date: 2000/07/27 11:53:14 EDT
699    
700    Tag: lal-20000727-linux-ppc
701    Description:
702    
703     Made changes to support Linux PPC.
704     p.s. I have confirmation that the 110.29 boot files work fine.
705    
706    ----------------------------------------------------------------------
707    Name: Matthias Blume
708    Date: 2000/07/27 17:40:00 JST
709    Tag: blume-20000727-scripts
710    Description:
711    
712    !!!! WARNING !!!!
713    You must recompile the runtime system!
714    !!!! WARNING !!!!
715    
716    This is basically another round of script-enhancements:
717    
718    1. sml, ml-build, and ml-makedepend accept options -D and -U to define
719       and undefine CM preprocessor symbols.
720    
721    2. ml-build avoids generating a new heap image if it finds that the
722       existing one is still ok.  (The condition is that no ML file had to
723       be recompiled and all ML files are found to be older that the heap
724       file.)
725    
726       To make this work smoothly, I also hacked the runtime system as
727       well as SMLofNJ.SysInfo to get access to the heap image suffix
728       (.sparc-solaris, ...) that is currently being used.
729    
730       Moreover, the signature of CM.mk_standalone has changed.  See the
731       CM manual.
732    
733    3. ml-makedepend accepts additional options -n, -a, and -o.  (See the
734       CM manual for details.)
735    
736    4. More CM manual updates:
737        - all of the above has been documented.
738        - there is now a section describing the (CM-related) command line
739          arguments that are accepted by the "sml" command
740    
741    ----------------------------------------------------------------------
742    Name: Matthias Blume
743    Date: 2000/07/25 16:20:00 JST
744    Tag: blume-20000725-makedepend
745    Description:
746    
747    Added a script called ml-makedepend.  This can be used in makefiles
748    for Unix' make in a way very similar to the "makedepend" command for
749    C.
750    
751    The script internally uses function CM.sources.
752    
753    Synopsis:
754    
755        ml-makedepend [-f makefile] cmfile targetname
756    
757    The default for the makefile is "makefile" (or "Makefile" should
758    "makefile" not exist).
759    
760    ml-makedepend adds a cmfile/targetname-specific section to this
761    makefile (after removing the previous version of this section).  The
762    section contains a single dependency specification with targetname on
763    the LHS (targetname is an arbitrary name), and a list of files derived
764    from the cmfile on the RHS.  Some of the files on the RHS are
765    ARCH/OPSYS-specific.  Therefore, ml-makedepend inserts references to
766    "make" variables $(ARCH) and $(OPSYS) in place of the corresponding
767    path names.  The makefile writer is responsible for making sure that
768    these variables have correct at the time "make" is invoked.
769    
770    ----------------------------------------------------------------------
771    Name: Matthias Blume
772    Date: 2000/07/22 23:30:00 JST
773    Tag: blume-20000722-urlupdate
774    Description:
775    
776    Changed BOOT and config/srcarchiveurl to point to BL server:
777    
778        ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.29/
779    
780    ----------------------------------------------------------------------
781    Name: Matthias Blume
782    Date: 2000/07/18 18:00:00 JST
783    Tag: blume-20000718-Version_110_29
784    Description:
785    
786    1. Updated src/compiler/TopLevel/main/version.sml to version 110.29
787    
788    2. Updated config/version to 110.29
789    
790    3. Updated config/srcarchiveurl
791    
792    3. New boot files!
793       ftp://ftp.cs.princeton.edu/pub/people/blume/sml/110.29-autofetch
794    
795    ----------------------------------------------------------------------
796    Name: Matthias Blume
797    Date: 2000/07/11 13:58:00 JST
798    Tag: blume-20000711-doctypo
799    Description:
800    
801    Fixed a few typos in CM manual.
802    
803    ----------------------------------------------------------------------
804    Name: Allen Leung
805    Date: 2000/06/15 00:38:00
806    Tag: leunga-20000704-sparc-x86
807    
808    1. x86 peephole improvement sp += k; sp -= k => nop  [from John]
809    2. fix to x86 RET bug [found by Dan Grossman]
810    3. sparc assembly bug fix for ticc instructions [found by Fermin]
811    
812       Affects c-- and moby only
813    
814    ----------------------------------------------------------------------
815    Name: Matthias Blume
816    Date: 2000/07/04 15:26:00
817    Tag: blume-20000704-trigger
818    Description:
819    
820    1. Improvements to CM manual.
821    2. SMLofNJ.Internals.BTrace.trigger reinstated as an alternative way
822       of getting a back-trace.  The function, when called, raises an
823       internal exception which explicitly carries the full back-trace history,
824       so it is unaffected by any intervening handle-raise pairs ("trivial"
825       or not).  The interactive loop will print that history once it arrives
826       at top level.
827       Short of having all exceptions implicitly carry the full history, the
828       recommended way of using this facility is:
829         - compile your program with instrumentation "on"
830         - run it, when it raises an exception, look at the history
831         - if the history is "cut off" because of some handler, go and modify
832           your program so that it explicitly calls BTrace.trigger
833         - recompile (still instrumented), and rerun; look at the full history
834    
835    ----------------------------------------------------------------------
836    Name: Matthias Blume
837    Date: 2000/07/03 15:36:00 JST
838    Tag: blume-20000702-manual
839    Description:
840    
841    Small corrections and updates to CM manual.
842    
843    ----------------------------------------------------------------------
844    Name: Matthias Blume
845    Date: 2000/06/29 16:04:00 JST
846    Tag: blume-20000629-yacctool
847    Description:
848    
849    Changes:
850    
851    1. Class "mlyacc" now takes separate arguments to pass options to
852       generated .sml- and .sig-files independently.
853    2. Corresponding CM manual updates.
854    3. BTrace module now also reports call sites.  (However, for loop clusters
855       it only shows from where the cluster was entered.)  There are associated
856       modifications to core.sml, internals.{sig,sml}, btrace.sml, and btimp.sml.
857    
858    ----------------------------------------------------------------------
859    Name: Matthias Blume
860    Date: 2000/06/27 16:51:00 JST
861    Tag: blume-20000627-noweb
862    Description:
863    
864    Changes:
865    
866     1. Implemented "subdir" and "witness" options for noweb tool.
867        This caused some slight internal changes in CM's tool implementation.
868     2. Fixed bug in "tool plugin" mechanism.  This is essentially cleaning
869        some remaining issues from earlier path anchor changes.
870     3. Updated CM manual accordingly.
871    
872     4. Changed implementation of back-tracing so that I now consider it
873        ready for prime-time.
874    
875        In particular, you don't have to explicitly trigger the back-trace
876        anymore.  Instead, if you are running BTrace-instrumented code and
877        there is an uncaught exception (regardless of whether or not it was
878        raised in instrumented code), the top-level evalloop will print
879        the back-trace.
880    
881        Features:
882    
883          - Instrumented and uninstrumented code work together seemlessly.
884            (Of course, uninstrumented code is never mentioned in actual
885             back-traces.)
886    
887          - Asymptotic time- and space-complexity of instrumented code is
888            equal to that of uninstrumented code.  (This means that
889            tail-recursion is preserved by the instrumentation phase.)
890    
891          - Modules whose code has been instrumented in different sessions
892            work together without problem.
893    
894          - There is no penalty whatsoever on uninstrumented code.
895    
896          - There is no penalty on "raise" expressions, even in
897            instrumented code.
898    
899        A potential bug (or perhaps it is a feature, too):
900    
901          A back-trace reaches no further than the outermost instrumented
902          non-trivial "raise".  Here, a "trivial" raise is one that is the
903          sole RHS of a "handle" rule.  Thus, back-traces reach trough
904    
905               <exp> handle e => raise e
906    
907          and even
908    
909               <exp> handle Foo => raise Bar
910    
911          and, of course, through
912    
913               <exp> handle Foo => ...
914    
915         if the exception was not Foo.
916    
917         Back-traces always reach right through any un-instrumented code
918         including any of its "handle" expressions, trivial or not.
919    
920       To try this out, do the following:
921    
922         - Erase all existing binfiles for your program.
923           (You may keep binfiles for those modules where you think you
924            definitely don't need back-tracing.)
925         - Turn on back-trace instrumentation:
926              SMLofNJ.Internals.BTrace.mode (SOME true);
927         - Recompile your program.  (I.e., run "CM.make" or "use".)
928         - You may now turn instrumentation off again (if you want):
929              SMLofNJ.Internals.BTrace.mode (SOME false);
930         - Run your program as usual.  If it raises an exception that
931           reaches the interactive toplevel, then a back-trace will
932           automatically be printed.  After that, the toplevel loop
933           will print the exception history as usual.
934    
935    ----------------------------------------------------------------------
936    Name: Matthias Blume
937    Date: 2000/06/26 09:56:46 JST
938    Tag: blume-20000626-setup
939    Description:
940    
941    CM: - setup-parameter to "sml" added; this can be used to run arbitrary
942          ML code before and after compiling a file (e.g., to set compiler
943          flags)
944    
945    Compiler: - improved btrace API (in core.sml, internals.{sig,sml})
946              - associated changes to btrace.sml (BTrace instrumentation pass)
947              - cleaner implementation of btimp.sml (BTrace tracing and report
948                module)
949    
950    CM manual: * new path encoding documented
951               * description of setup-parameter to "sml" added
952    
953    The biggest user-visible change to back-tracing is that it is no
954    longer necessary to compile all traced modules within the same
955    session.  (This was a real limitation.)
956    
957    ----------------------------------------------------------------------
958    Name: Matthias Blume
959    Date: 2000/06/24 12:40:00 JST
960    Tag: blume-20000624-startup
961    Description:
962    
963    Fixes startup slowdown problem.  (I was calling SrcPath.sync a _tad_
964    bit too often -- to put it mildly. :)
965    
966    ----------------------------------------------------------------------
967    Name: Matthias Blume
968    Date: 2000/06/23 18:20:00 JST
969    Tag: blume-20000623-btrace
970    Description:
971    
972    This updates adds a backtrace facility to aid programmers in debugging
973    their programs.  This involves the following changes:
974    
975    1. Module system/smlnj/init/core.sml (structure _Core) now has hooks for
976       keeping track of the current call stack.  When programs are compiled
977       in a special mode, the compiler will insert calls to these hooks
978       into the user program.
979       "Hook" means that it is possible for different implementations of
980       back-tracing to register themselves (at different times).
981    
982    2. compiler/MiscUtil/profile/btrace.sml implements the annotation phase
983       as an Absyn.dec->Absyn.dec rewrite.  Normally this phase is turned off.
984       It can be turned on using this call:
985         SMLofNJ.Internals.BTrace.mode (SOME true);
986       Turning it off again:
987         SMLofNJ.Internals.BTrace.mode (SOME false);
988       Querying the current status:
989         SMLofNJ.Internals.BTrace.mode NONE;
990       Annotated programs are about twice as big as normal ones, and they
991       run a factor of 2 to 4 slower with a dummy back-trace plugin (one
992       where all hooks do nothing).  The slowdown with a plugin that is
993       actually useful (such as the one supplied by default) is even greater,
994       but in the case of the default plugin it is still only an constant
995       factor (amortized).
996    
997    3. system/Basis/Implementation/NJ/internals.{sig,sml} have been augmented
998       with a sub-structure BTrace for controlling back-tracing.  In particular,
999       the above-mentioned function "mode" controls whether the annotation
1000       phase is invoked by the compiler.  Another important function is
1001       "trigger": when called it aborts the current execution and causes
1002       the top-level loop to print a full back-trace.
1003    
1004    4. compiler/MiscUtil/profile/btimp.sml is the current default plugin
1005       for back-tracing.  It keeps track of the dynamic call stack and in
1006       addition to that it keeps a partial history at each "level" of that
1007       stack.  For example, if a tail-calls b, b tail-calls c, and c tail-calls
1008       d and b (at separate times, dynamically), then the report will show:
1009    
1010       GOTO   d
1011             /c
1012       GOTO  \b
1013       CALL   a
1014    
1015       This shows that there was an initial non-tail call of a, then a
1016       tail-call to b or c, looping behavior in a cluster of functions that
1017       consist of b and c, and then a goto from that cluster (i.e., either from
1018       b or from c) to d.
1019    
1020       Note that (depending on the user program) the amount of information
1021       that the back-trace module has to keep track of at each level is bounded
1022       by a constant.  Thus, the whole implementation has the same asymptotical
1023       complexity as the original program (both in space and in time).
1024    
1025    5. compiler/TopLevel/interact/evalloop.sml has been modified to
1026       handle the special exception SMLofNJ.Internals.BTrace.BTrace
1027       which is raised by the "trigger" function mentioned above.
1028    
1029    Notes on usage:
1030    
1031    - Annotated code works well together with unannotated code:
1032    Unannotated calls simply do not show up at all in the backtrace.
1033    
1034    - It is not a good idea to let modules that were annotated during
1035    different sessions run at the same time.  This is because the compiler
1036    chooses small integers to identify individual functions, and there
1037    will be clashes if different modules were compiled in separate sessions.
1038    (Nothing will crash, and you will even be told about the clashes, but
1039    back-trace information will in general not be useful.)
1040    
1041    - Back-tracing can be confused by callcc and capture.
1042    
1043    - The only way of getting a back-trace right now is to explicitly
1044    invoke the "trigger" function from your user program.  Eventually, we
1045    should make every exception carry back-trace information (if
1046    available).  But since this creates more overhead at "raise"-time
1047    (similar to the current exnHistory overhead), I have not yet
1048    implemented this.  (The implementation will be rather easy.)  With
1049    exceptions carrying back-trace information, this facility will be even
1050    more useful because users don't need to modify their programs...
1051    
1052    - While it is possible to compile the compiler with back-trace
1053    annotations turned on (I did it to get some confidence in
1054    correctness), you must make absolutely sure that core.sml and
1055    btimp.sml are compiled WITHOUT annotation!  (core.sml cannot actually
1056    be compiled with annotation because there is no core access yet, but
1057    if you compile btimp.sml with annotation, then the system will go into
1058    an infinite recursion and crash.)
1059    Since CM currently does not know about BTrace, the only way to turn
1060    annotations on and off for different modules of the compiler is to
1061    interrupt CMB.make, change the settings, and re-invoke it.  Of course,
1062    this is awkward and clumsy.
1063    
1064    Sample sessions:
1065    
1066    Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
1067    - SMLofNJ.Internals.BTrace.mode (SOME true);
1068    [autoloading]
1069    [autoloading done]
1070    val it = false : bool
1071    - structure X = struct
1072    -     fun main n = let
1073    -         fun a (x, 0) = d x
1074    -           | a (x, n) = b (x, n - 1)
1075    -         and b (x, n) = c (x, n)
1076    -         and c (x, n) = a (x, n)
1077    -         and d x = e (x, 3)
1078    -         and e (x, 0) = f x
1079    -           | e (x, n) = e (x, n - 1)
1080    -         and f 0 = SMLofNJ.Internals.BTrace.trigger ()
1081    -           | f n = n * g (n - 1)
1082    -         and g n = a (n, 3)
1083    -     in
1084    -         f n
1085    -     end
1086    - end;
1087    structure X : sig val main : int -> int end
1088    - X.main 3;
1089    *** BACK-TRACE ***
1090    GOTO   stdIn:4.2-13.20: X.main[2].f
1091    GOTO-( stdIn:4.2-13.20: X.main[2].e
1092    GOTO   stdIn:4.2-13.20: X.main[2].d
1093         / stdIn:4.2-13.20: X.main[2].a
1094         | stdIn:4.2-13.20: X.main[2].b
1095    GOTO-\ stdIn:4.2-13.20: X.main[2].c
1096    CALL   stdIn:4.2-13.20: X.main[2].g
1097    GOTO   stdIn:4.2-13.20: X.main[2].f
1098    GOTO-( stdIn:4.2-13.20: X.main[2].e
1099    GOTO   stdIn:4.2-13.20: X.main[2].d
1100         / stdIn:4.2-13.20: X.main[2].a
1101         | stdIn:4.2-13.20: X.main[2].b
1102    GOTO-\ stdIn:4.2-13.20: X.main[2].c
1103    CALL   stdIn:4.2-13.20: X.main[2].g
1104    GOTO   stdIn:4.2-13.20: X.main[2].f
1105    GOTO-( stdIn:4.2-13.20: X.main[2].e
1106    GOTO   stdIn:4.2-13.20: X.main[2].d
1107         / stdIn:4.2-13.20: X.main[2].a
1108         | stdIn:4.2-13.20: X.main[2].b
1109    GOTO-\ stdIn:4.2-13.20: X.main[2].c
1110    CALL   stdIn:4.2-13.20: X.main[2].g
1111    GOTO   stdIn:4.2-13.20: X.main[2].f
1112    CALL   stdIn:2.15-17.4: X.main[2]
1113    -
1114    
1115    (Note that because of a FLINt bug the above code currently does not
1116    compile without BTrace turned on.)
1117    
1118    Here is another example, using my modified Tiger compiler:
1119    
1120    Standard ML of New Jersey v110.28.1 [FLINT v1.5], June 5, 2000
1121    - SMLofNJ.Internals.BTrace.mode (SOME true);
1122    [autoloading]
1123    [autoloading done]
1124    val it = false : bool
1125    - CM.make "sources.cm";
1126    [autoloading]
1127    ...
1128    [autoloading done]
1129    [scanning sources.cm]
1130    [parsing (sources.cm):parse.sml]
1131    [creating directory CM/SKEL ...]
1132    [parsing (sources.cm):tiger.lex.sml]
1133    ...
1134    [wrote CM/sparc-unix/semant.sml]
1135    [compiling (sources.cm):main.sml]
1136    [wrote CM/sparc-unix/main.sml]
1137    [New bindings added.]
1138    val it = true : bool
1139    - Main.compile ("../testcases/merge.tig", "foo.out");
1140    *** BACK-TRACE ***
1141    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trvar
1142    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
1143    CALL   lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
1144    GOTO   lib/semant.sml:289.3-295.22: SemantFun[2].transExp.trexp.check[2]
1145    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
1146    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
1147    CALL   lib/semant.sml:488.3-505.6: SemantFun[2].transDec.trdec[2].transBody[2]
1148         / lib/semant.sml:411.65-543.8: SemantFun[2].transDec
1149    CALL-\ lib/semant.sml:413.2-540.9: SemantFun[2].transDec.trdec[2]
1150    CALL   lib/semant.sml:99.2-396.21: SemantFun[2].transExp.trexp
1151    CALL   lib/semant.sml:8.52-558.4: SemantFun[2].transProg[2]
1152    CALL   main.sml:1.18-118.4: Main.compile[2]
1153    -
1154    
1155    ----------------------------------------------------------------------
1156    Name: Matthias Blumen
1157    Date: 2000/06/21 18:00:00 JST
1158    Tag: blume-20000621-manual
1159    Description:
1160    
1161    CM manual update: Path environments documented.
1162    
1163    ----------------------------------------------------------------------
1164    Name: Matthias Blume
1165    Date: 2000/06/19 13:40:00
1166    Tag: blume-20000619-manual
1167    Description:
1168    
1169    CM manual and system/README update.  This only covers the fact that
1170    there are no more implicit anchors.  (Path environments and the "bind"
1171    option to "cm" have yet to be documented.)
1172    
1173    ----------------------------------------------------------------------
1174    Name: Matthias Blume
1175    Date: 2000/06/19 11:05:00 JST
1176    Tag: blume-20000619-chdir-bugfix
1177    Description:
1178    
1179    Fixed a bug in new SrcPath module that sometimes led to a bad chDir call.
1180    
1181    ----------------------------------------------------------------------
1182    Name: Matthias Blume
1183    Date: 2000/06/18 22:00:10 JST
1184    Tag: blume-20000618-implicit-anchors-really-gone
1185    Description:
1186    
1187    I updates the previous HISTORY entry where I forgot to mention that
1188    implicit anchors are no longer with us.
1189    
1190    The current update also gets rid of the (now useless) controller
1191    CM.Control.implicit_anchors.
1192    
1193    ----------------------------------------------------------------------
1194    Name: Matthias Blume
1195    Date: 2000/06/16 17:30:00 JST
1196    Tag: blume-20000616-anchorenv
1197    Description:
1198    
1199    This patch implements the long anticipated (just kidding :) "anchor
1200    environment" mechanism.  In the course of doing this, I also
1201    re-implemented CM's internal "SrcPath" module from scratch.  The new
1202    one should be more robust in certain boundary cases.  In any case, it
1203    is a lot cleaner than its predecessor (IMHO).
1204    
1205    This time, although there is yet another boot file format change, I
1206    kept the unpickler backward-compatible.  As a result, no new bootfiles
1207    are necessary and bootstrapping is straightforward.  (You cannot read
1208    new bootfiles into an old system, but the other way around is no
1209    problem.)
1210    
1211    Visible changes:
1212    
1213    ** 0. Implicit path anchors (without the leading $-symbol) are no
1214    longer recognized at all. This means that such path names are not
1215    illegal either.  For example, the name basis.cm simply refers to a
1216    local file called "basis.cm" (i.e, the name is an ordinary path
1217    relative to .cm-files directory).  Or, to put it differently, only
1218    names that start with $ are anchored paths.
1219    
1220    ** 1. The $<singlearc> abbreviation for $/<singlearc> has finally
1221    vanished.
1222    
1223    John (Reppy) had critizised this as soon as I originally proposed and
1224    implemented it, but at that time I did not really deeply believe
1225    him. :) Now I came full-circle because I need the $<singlearc> syntax
1226    in another place where it cannot be seen as an abbreviation for
1227    $/<singlearc>.  To avoid the confusion, $<singlearc> now means what it
1228    seems to mean (i.e., it "expands" into the corresponding anchor
1229    value).
1230    
1231    However, when paths are used as members in CM description files, it
1232    continues to be true that there must be at least another arc after the
1233    anchor.  This is now enforced separately during semantic analysis
1234    (i.e., from a lexical/syntactical point of view, the notation is ok.)
1235    
1236    ** 2. The "cm" class now accepts an option "bind".  The option's value
1237    is a sub-option list of precisely two items -- one labeled "anchor"
1238    and the other one labeled "value".  As you might expect, "anchor" is
1239    used to specify an anchor name to be bound, and "value" specifies what
1240    the anchor is being bound to.
1241    
1242    The value must be a directory name and can be given in either standard
1243    syntax (including the possibility that it is itself an anchored path)
1244    or native syntax.
1245    
1246    Examples:
1247    
1248       foo.cm (bind:(anchor:bar value:$mystuff/bar))
1249       lib.cm (bind:(anchor:a value:"H:\\x\\y\\z"))  (* only works under windows *)
1250    
1251    and so on.
1252    
1253    The meaning of this is that the .cm-file will be processed with an
1254    augmented anchor environment where the given anchor(s) is/are bound to
1255    the given values(s).
1256    
1257    The rationale for having this feature is this: Suppose you are trying
1258    to use two different (already stable) libraries a.cm and b.cm (that
1259    you perhaps didn't write yourself).  Further, suppose each of these
1260    two libraries internally uses its own auxiliary library $aux/lib.cm.
1261    Normally you would now have a problem because the anchor "lib" can not
1262    be bound to more than one value globally.  Therefore, the project that
1263    uses both a.cm and b.cm must locally redirect the anchor to some other
1264    place:
1265    
1266       a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
1267       b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
1268    
1269    This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
1270    /usr/lib/smlnj/b-stuff/aux.cm, respectively.
1271    
1272    Hard-wiring path names is a bit inflexible (and CM will verbosely warn
1273    you when you do so at the time of CM.stabilize).  Therefore, you can
1274    also use an anchored path as the value:
1275    
1276      a.cm (bind:(anchor:lib value:$a-lib))
1277      b.cm (bind:(anchor:lib value:$b-lib))
1278    
1279    Now you can globally configure (using the usual CM.Anchor.anchor or
1280    pathconfig machinery) bindings for "a-lib" and "b-lib".  Since "lib"
1281    itself is always locally bound, setting it globally is no longer
1282    meaningful or necessary (but it does not hurt either).  In fact, "lib"
1283    can still be used as a global anchor for separate purposes.  As a
1284    matter of fact, one can locally define "lib" in terms of a global
1285    "lib":
1286    
1287      a.cm (bind:(anchor:lib value:$lib/a))
1288      b.cm (bind:(anchor:lib value:$lib/b))
1289    
1290    ** 3: The encoding of path names has changed.  This affects the way
1291    path names are shown in CM's progress report and also the internal
1292    protocol encoding used for parallel make.
1293    
1294    The encoding now uses one or more ':'-separated segments.  Each
1295    segments corresponds to a file that has been specified relative to the
1296    file given by its preceding segment.  The first segment is either
1297    relative to the CWD, absolute, or anchored.  Each segment itself is
1298    basically a Unix pathname; all segments but the first are relative.
1299    
1300    Example:
1301    
1302       $foo/bar/baz.cm:a/b/c.sml
1303    
1304    This path denotes the file bar/a/b/c.sml relative to the directory
1305    denoted by anchor "foo".  Notice that the encoding also includes
1306    baz.cm which is the .cm-file that listed a/b/c.sml.  As usual, such
1307    paths are resolved relative to the .cm-files directory, so baz.cm must
1308    be ignored to get the "real" pathname.
1309    
1310    To make this fact more obvious, CM puts the names of such "virtual
1311    arcs" into parentheses when they appear in progress reports. (No
1312    parentheses will appear in the internal protocol encoding.)  Thus,
1313    what you really see is:
1314    
1315      $foo/bar/(baz.cm):a/b/c.sml
1316    
1317    I find this notation to be much more informative than before.
1318    
1319    Another new feature of the encoding is that special characters
1320    including parentheses, colons, (back)slashes, and white space are
1321    written as \ddd (where ddd is the decimal encoding of the character).
1322    
1323    *** The CM manual still needs to be updated.
1324    
1325    ----------------------------------------------------------------------
1326    Name: Allen Leung
1327    Date: 2000/06/15 00:38:00
1328    Tag: leunga-20000615-x86-peephole
1329    
1330    x86 Peephole fix by Fermin.  Affects c-- and moby only.
1331    
1332    ----------------------------------------------------------------------
1333    Name: Matthias Blume
1334    Date: 2000/06/12 11:40:00
1335    Tag: blume-20000612-parmakefix
1336    Description:
1337    
1338    More cleanup after changing the file naming scheme: This time I
1339    repaired the parallel make mechanism for CMB.make which I broke earlier.
1340    
1341    ----------------------------------------------------------------------
1342    Name: Allen Leung
1343    Date: 2000/06/09 01:25:00
1344    Tag: leunga-20000609-various
1345    
1346    None of these things should affect normal SML/NJ operations
1347    
1348    1. Peephole improvements provided by Fermin (c--)
1349    2. New annotation DEFUSE for adding extra dependence (moby)
1350    3. New X86 LOCK instructions (moby)
1351    4. New machine description language for reservation tables (scheduling)
1352    5. Fixes to various optimization/analysis modules (branch chaining, dominator
1353       trees etc.)
1354    6. I've changed the CM files so that they can work with versions
1355       110.0.6, 110.25 and 110.28
1356    
1357    ----------------------------------------------------------------------
1358    Name: Matthias Blume
1359    Date: 2000/06/09 12:40:00
1360    Tag: blume-20000609-log
1361    Description:
1362    
1363    - Removed all(?) remaining RCS Log entries from sources.
1364    
1365    - Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
1366      anchored paths).
1367    
1368    ----------------------------------------------------------------------
1369    Name: Matthias Blume
1370    Date: 2000/06/07 17:00:00 JST
1371    Tag: blume-20000607-no-implicit-anchors
1372    Description:
1373    
1374    1. This update changes the default setting for
1375    CM.Control.implicit_anchors from true to false.  This means that
1376    implicit anchors are no longer permitted by default.  I also tried to
1377    make sure that nothing else still relies on implicit anchors.
1378    (This is the next step on the schedule towards a CM that does not even
1379    have the notion of implicit anchors anymore.)
1380    
1381    2. More CM manual updates.
1382    
1383    3. I managed to track down and fix the pickling bug I mentioned last
1384    time.  Because of the previously existing workaround, this entails no
1385    immediate practical changes.
1386    
1387    ----------------------------------------------------------------------
1388    Name: Matthias Blume
1389    Date: 2000/06/06 11:15:00 JST
1390    Tag: blume-20000606-lazierpickle
1391    Description:
1392    
1393    !!!! NEW BOOT FILES !!!!
1394    
1395    * The main purpose of this update is to make library pickles lazier in
1396    order to reduce the initial space penalty for autoloading a library.
1397    As a result, it is now possible to have $smlnj/compiler.cm
1398    pre-registered.  This should take care of the many complaints or
1399    inquiries about missing structure Compiler.  This required changes to
1400    CM's internal data structures and small tweaks to some algorithms.
1401    
1402    As a neat additional effect, it is no longer necessary (for the sake
1403    of lean heap image files) to distinguish between a "minimal" CM and a
1404    "full" CM.  Now, there is only one CM (i.e., the "full" version:
1405    $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
1406    interactive top level. ($smlnj/cm/minimal.cm is gone.)
1407    
1408    To make the life of compiler-hackers easier, "makeml" now also
1409    pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm).  In other
1410    words, after you bootstrap a new sml for the first time, you will not
1411    have to autoload $smlnj/cmb.cm again afterwards.  (The first time
1412    around you will still have to do it, though.)
1413    
1414    * A second change consists of major updates to the CM manual.  There
1415    are now several appendices with summary information and also a full
1416    specification of the CM description file syntax.
1417    
1418    * In directory src/system I added the script "allcross".  This script
1419    invokes sml and cross-compiles the compiler for all supported
1420    architectures.  (Useful when providing a new set of boot files.)
1421    
1422    * There seems to be a latent bug in my "lazy pickles" mechanism.  I
1423    added a small tweak to pickle-util.sml to work around this problem,
1424    but it is not a proper fix yet.  I will investigate further.  (The
1425    effect of the bug was an inflation of library pickle size.)
1426    
1427    * Version number increased to 110.28.1 (to avoid compatibility problems).
1428    
1429    ----------------------------------------------------------------------
1430    Name: Allen Leung
1431    Date: 2000/05/25 17:28 EDT
1432    Tag: leunga-20000525-ra
1433    Description:
1434    
1435      Fixed a bug in freezing phase of the register allocator.
1436    
1437    ----------------------------------------------------------------------
1438    Name: Allen Leung
1439    Date: 2000/05/15 22:53 EDT
1440    Tag: leunga-20000515-alpha-x86-ra
1441    Description:
1442    
1443      1. Alpha
1444    
1445          Slight cleanup.  Removed the instruction SGNXL
1446    
1447      2. X86
1448    
1449          Added the following instructions to the instruction set:
1450    
1451            ROLx, RORx,
1452            BTx, BTSx, BTLx, BTRx,
1453            XCHGx, and variants with the LOCK prefix
1454    
1455      3. Register Allocation
1456    
1457          The module ra-rewrite-with-renaming has been improved.
1458    
1459      These have no effect on SML/NJ.
1460    
1461    ----------------------------------------------------------------------
1462    Name: Matthias Blume
1463    Date: 2000/05/15 16:20:00 JST
1464    Tag: blume-20000515-lightrebuild
1465    Description:
1466    
1467    1. I added an alternative to "-rebuild" to "makeml".  The difference is
1468       that prior to calling CMB.make' the CM-variable "LIGHT" will be
1469       defined.  In effect, the command will not build any cross-compiler
1470       backends and therefore finish more quickly.
1471    
1472       The "fixpt" script also takes a "-light" switch to be able to use
1473       this new facility while compiling for a fixpoint.
1474    
1475    2. I replaced all mentions of anchored paths in group owner specifications
1476       with simple relative paths (usually starting with "..").
1477       The rationale is that a library's internal workings should not be
1478       compromised by the lack of some anchor.  (An anchor is necessary
1479       for someone who wants to refer to the library by an anchored path,
1480       but it should not be necessary to build the same library in the first
1481       place.)
1482    
1483    3. I changed the way CM's tool mechanism determines the shell command
1484       string used for things like ml-yacc etc. so that it does not break
1485       when CM.Control.implicit_anchors is turned off.
1486    
1487    ----------------------------------------------------------------------
1488    Name: Matthias Blume
1489    Date: 2000/05/12 18:20:00 JST
1490    Tag: blume-20000512-ml-build
1491    Description:
1492    
1493    Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
1494    getting installed properly (by config/install.sh).
1495    
1496    ----------------------------------------------------------------------
1497    Name: Matthias Blume
1498    Date: 2000/05/12 17:30:00 JST
1499    Tag: blume-20000512-anchors
1500    Description:
1501    
1502    !!! NEW BOOT FILES !!!
1503    
1504    This change is in preparation of fading out support for "implicitly
1505    anchored path names".  I went through all sources and used the
1506    explicit (and relatively new) $-notation.  See system/README and the
1507    CM manual for more info on this.
1508    
1509    I also modified the anchoring scheme for some things such as "smlnj",
1510    "MLRISC", "cm", etc. to take advantage of the fact that explicit
1511    anchors are more expressive: anchor name and first arc do not have to
1512    coincide.  This entails the following user-visible change:
1513    
1514    You have to write $smlnj/foo/bar instead of smlnj/foo/bar.  In
1515    particular, when you fire up sml with a command-line argument, say,
1516    e.g.:
1517    
1518       sml '$smlnj/cmb.cm'
1519    
1520    At the ML toplevel prompt:
1521    
1522       CM.autoload "$smlnj/cmb.cm";
1523    
1524    There is also a new controller in CM.Control that can be used to turn
1525    off all remaining support for implicit anchors by saying:
1526    
1527        CM.autoload "$smlnj/
1528        #set CM.Control.implicit_anchors false;
1529    
1530    This causes CM to reject implicitly anchored paths.  This is (for the
1531    time being) less permissive than the "final" version where there will
1532    be no more such implicit anchors and relative paths will be just that:
1533    relative.
1534    
1535    The next step (version after next version?) will be to make the
1536    default for CM.Control.implicit_anchors false.  After the dust has
1537    settled, I can then produce the "final" version of this...
1538    
1539    Note: Since bootstrapping is a bit tricky, I provided new boot files.
1540    
1541    ----------------------------------------------------------------------
1542    Name: Matthias Blume
1543    Date: 2000/05/11 16:30:00 JST
1544    Tag: blume-20000511-sources
1545    Description:
1546    
1547    The main change is that I added function CM.sources as a generalized
1548    version of the earlier CM.makedepend.  This entails the following
1549    additional changes:
1550    
1551      - CM.makedepend has been dropped.
1552    
1553      - CM manual has been updated.
1554    
1555      - TOOLS signature and API have been changed.
1556    
1557    ----------------------------------------------------------------------
1558    Name: Allen Leung
1559    Date: 2000/05/10 21:17 EDT
1560    Tag: leunga-20000510-moby-c--ssa
1561    Description:
1562    
1563      Various bug fixes and new features for C--, Moby and MLRISC optimizations.
1564    None of these affect SML/NJ.
1565    
1566    1. Register Allocation
1567    
1568        a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
1569           This module tries to remove local (i.e. basic block level) redundancies
1570           during spilling.
1571    
1572        b. A new framework for performing region based register allocation.
1573           Not yet entirely functional.
1574    
1575    2. X86
1576    
1577       a. DefUse for POP was missing the stack pointer [found by Lal]
1578       b. Reload for CALL was incorrect in X86Spill [found by John]
1579       c. Various fixes in X86Spill so that it can be used correctly for
1580          the new spilling module.
1581    
1582    3. SSA/IR
1583    
1584       a. New module ir/dj-dataflow.sml implements elimination based
1585          data flow analysis.
1586    
1587    4. MLRiscGen
1588    
1589       a. Fix for gc type annotation
1590    
1591    5. MDGen
1592    
1593       Various fixes for machine description -> ml code translation.  For ssa
1594       only.
1595    
1596    ----------------------------------------------------------------------
1597    Name: Allen Leung
1598    Date: 2000/05/08 22:17 EDT
1599    Tag: leunga-20000508-labexp
1600    Description:
1601    
1602      Fermin has found a few assembly problems with constant expressions
1603      generated in LabelExp.  Mostly, the problems involve extra parentheses,
1604      which choke on dumb assemblers.  This is his fix.
1605    
1606    ----------------------------------------------------------------------
1607    Name: Dave MacQueen
1608    Date: 2000/04/09 14:00 EDT
1609    Tag: dbm-20000502-Version_110_28
1610    Description:
1611    
1612    1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
1613    
1614    2. Updated config/version to 110.28
1615    
1616    3. Updated config/srcarchiveurl
1617    
1618    3. New boot files!
1619       ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
1620    
1621    ----------------------------------------------------------------------
1622    Name: Matthias Blume
1623    Date: 2000/05/01 19:05:00 JST
1624    Tag: blume-20000501-noweb
1625    Description:
1626    
1627    A new noweb tool has been added.  The existing system is entirely
1628    unaffected by this, but some CM users have asked for renewed noweb
1629    support.  Everything is documented in the CM manual.
1630    
1631    New (plugin) libraries:
1632    
1633       noweb-tool.cm
1634       nw-ext.cm
1635    
1636    ----------------------------------------------------------------------
1637    Name: Dave MacQueen
1638    Date: 2000/04/30 12:40PM EDT
1639    Tag: dbm-20000430-bug_fixes
1640    Description:
1641    
1642    1. Fix for bug 1498
1643       smlnj/src/system/Basis/Implementation/Unsafe/object.sig
1644       smlnj/src/system/Basis/Implementation/Unsafe/object.sml
1645         added toRealArray function
1646       smlnj/src/compiler/MiscUtil/print/ppobj.sml
1647         added check for tag Obj.RealArray to array printing case in ppObj
1648    
1649    2. Fix for bug 1510
1650       smlnj/src/compiler/Semant/types/typesutil.sml
1651         fixed definition of dummyargs (used by equalTycon) so that
1652         dummy args are distinct types
1653    
1654    ----------------------------------------------------------------------
1655    Name: Matthias Blume
1656    Date: 2000/04/30 01:00:00 JST
1657    Tag: blume-20000430-versions
1658    Description:
1659    
1660    1. CM version numbering added.  This is an implementation of Lal's
1661       proposal for adding version numbers and version checking to .cm
1662       files.  Lal said that his proposal was just that -- a proposal.
1663       For the time being I went ahead and implemented it so that people
1664       can comment on it.  Everything is completely backward-compatible
1665       (except for the stable library format, i.e., new bootfiles!).
1666    
1667       As usual, see the CM manual for details.
1668    
1669    2. An alternative syntax for anchored paths has been implemented.
1670       Dave has recently voiced the same concerns that I had when I did
1671       this, so there should be some support.  My take is that eventually
1672       I will let support for the current syntax (where anchors are
1673       "implicit") fade out in favor of the new, explicit syntax.
1674       In order to be backward-compatible, both old and new syntax are
1675       currently supported.
1676    
1677       Again, see the CM manual for details.
1678    
1679    3. Parallel make is trying to be slightly smarter:  When the master
1680       process finds a "bottleneck", i.e., when there is only one
1681       compilation unit that can be compiled and everybody else is
1682       waiting on it, then it will simply compile it directly instead
1683       of clumsily telling one of the slaves to do it.
1684    
1685    4. Support for "unsharing" added.  This is necessary in order to be
1686       able to have two different versions of the same library running
1687       at the same time (e.g., for trying out a new MLRISC while still
1688       having the old MLRISC linked into the current compiler, etc.)
1689       See the CM manual.
1690    
1691    5. Simple "makedepend" functionality added for generating Makefile
1692       dependency information.  (This is rather crude at the moment.
1693       Expect some changes here in the future.)
1694    
1695    6. ".fun" added as a recognized suffix for ML files. Also documented
1696       explicitly in the manual that the fallback behavior (unknown suffix
1697       -> ML file) is not an official feature!
1698    
1699    7. Small changes to the pickler for stable libraries.
1700    
1701    8. Several internal changes to CM (for cleanup/improvement).
1702    
1703    
1704    !!!! NEW BINFILES !!!!
1705    
1706    ----------------------------------------------------------------------
1707    Name: Matthias Blume
1708    Date: 2000/04/28 17:30:00 JST
1709    Tag: blume-20000428-pathconfig
1710    Description:
1711    
1712    1. I changed config/install.sh to remove duplicate entries from the
1713       lib/pathconfig file at the end.  Moreover, the final version of
1714       lib/pathconfig is sorted alphabetically.  The same (sorting) is done
1715       in src/system/installml.
1716    
1717    2. The config/install.sh script now consistently uses relative
1718       pathnames in lib/pathconfig whenever the anchor is in the lib
1719       directory.  (So far this was true for the libraries that come
1720       pre-compiled and bundled as part of the bootfiles but not for
1721       libraries that are compiled by the script itself.)
1722    
1723    ----------------------------------------------------------------------
1724    Name: Matthias Blume
1725    Date: 2000/04/26 13:10:00 JST
1726    Tag: blume-20000426-fun_suffix
1727    Description:
1728    
1729    Added ".fun" as a recognized file name suffix (for ML code).
1730    
1731    ----------------------------------------------------------------------
1732    Name: Allen Leung
1733    Date: 2000/04/25 17:00:00 EST
1734    Tag: leunga-20000425-alpha-ra
1735    Description:
1736    
1737    1. Alpha
1738    
1739        PSEUDOARITH was missing in AlphaRewrite.  This causes an endless loop
1740    in C--.
1741    
1742    2. RA
1743    
1744       Added a flag "ra-dump-size" to print out the size of the flowgraph
1745       and the interference graph.
1746    
1747    ----------------------------------------------------------------------
1748    Name: Dave MacQueen
1749    Date: 2000/04/25/
1750    Tag: dbm-20000425-mlyacc_doc_examples
1751    Description:
1752      Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
1753      Updated all three examples in src/ml-yacc/examples to run
1754      under 110.* using CM.make.
1755    
1756    ----------------------------------------------------------------------
1757    Name: Allen Leung
1758    Date: 2000/04/20 23:04:00 EST
1759    Tag: leunga-20000420-ssa-c---stuff
1760    Description:
1761    
1762      This update synchronizes my repository with Yale's.  Most of these
1763    changes, however, do not affect SML/NJ at all (the RA is an exception).
1764    
1765    1. Register Allocator
1766    
1767       a. An improvement in the interference graph construction:
1768          Given a copy
1769    
1770                s <- t
1771    
1772          no interference edge between s and t is added for this definition of s.
1773    
1774       b. I've added two new spill heuristic modules that Fermin and I developed
1775          (in the new library RA.cm). These are unused in SML/NJ but maybe
1776          useful for others (Moby?)
1777    
1778    2. X86
1779    
1780       a. Various fixes in the backend provided by Fermin [C--] and Lal.
1781    
1782    3. Alpha
1783    
1784       a. Added the BSR instruction and code generation that goes with it [C--]
1785       b. Other fixes too numerous to recount provided by Fermin [C--]
1786    
1787    4. Regmaps
1788    
1789       a. The regmaps are not initialized with the identity physical bindings
1790          at creation time.  This is unneeded.
1791    
1792    5. MLRISC Optimizations
1793    
1794       a. The DJ-Graph module can now compute the iterated dominance frontiers
1795          intersects with liveness incrementally in linear time! Woohoo!
1796          This is now used in my new SSA construction algorithm.
1797    
1798       b. THe branch reorganization module is now smarter about linear chains of
1799          basic blocks.
1800    
1801    
1802    ----------------------------------------------------------------------
1803    Name: Matthias Blume
1804    Date: 2000/04/12 13:52:00 JST
1805    Tag: blume_main_v110p27_1
1806    Description:
1807    
1808    Changed install.sh script to handle archive files without version number
1809    and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
1810    name of the boot file archive.
1811    
1812    ----------------------------------------------------------------------
1813    Name: Dave MacQueen
1814    Date: 2000/04/09 14:00 EDT
1815    Tag: dbm-20000410-Version_110_27
1816    Description:
1817    
1818    1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
1819    
1820    2. Updated src/config/version to 110.27
1821    
1822    3. New boot files!
1823    
1824    ----------------------------------------------------------------------
1825    Name: Allen Leung
1826    Date: 2000/04/09 19:09:00 EST
1827    Tag: leunga-20000409-misc
1828    Description:
1829    
1830    1.  Yet another fix for x86 assembly for idivl, imull, mull and friends.
1831    
1832    2.  Miscellaneous improvements to MLRISC (unused in sml/nj)
1833    
1834    ----------------------------------------------------------------------
1835    Name: Stefan
1836    Date: 2000/04/07 10:00:00 EDT
1837    Tag: monnier-20000406-branch-handling
1838    Description:
1839    
1840    Improved handling of branches (mostly those generated from
1841    polymorphic equality), removed switchoff and changed the
1842    default optimization settings (more cpsopt and less flintopt).
1843    
1844    ----------------------------------------------------------------------
1845    Name: Allen Leung
1846    Date: 2000/04/06 01:30:00 EST
1847    Tag: leunga-20000406-peephole-x86-SSA-2
1848    Description:
1849    
1850       Forgot a few files.
1851    
1852    ----------------------------------------------------------------------
1853    Name: Allen Leung
1854    Date: 2000/04/06 00:36:00 EST
1855    Tag: leunga-20000406-peephole-x86-SSA
1856    Description:
1857    
1858    1.  New Peephole code
1859    
1860    2.  Minor improvement to X86 instruction selection
1861    
1862    3.  Various fixes to SSA and machine description -> code translator
1863    
1864    ----------------------------------------------------------------------
1865  Name: Matthias Blume  Name: Matthias Blume
1866  Date: 2000/04/05 12:30:00 JST  Date: 2000/04/05 12:30:00 JST
1867  Tag: blume_main_v110p26p2_3  Tag: blume_main_v110p26p2_3
# Line 67  Line 1917 
1917    
1918  3.  Assembly  3.  Assembly
1919    
1920      When generating assemby, resolve the value of client defined constants,      When generating assembly, resolve the value of client defined constants,
1921      instead of generating symbolic values.  This is controlled by the      instead of generating symbolic values.  This is controlled by the
1922      new flag "asm-resolve-constants", which is default to true.      new flag "asm-resolve-constants", which is default to true.
1923    
# Line 90  Line 1940 
1940    
1941  To this end, I arranged that instead of "structure Core" as "structure  To this end, I arranged that instead of "structure Core" as "structure
1942  _Core" is bound in the pervasive environment.  Core access is done via  _Core" is bound in the pervasive environment.  Core access is done via
1943  _Core (which can never be accidentially rebound because _Core is not a  _Core (which can never be accidentally rebound because _Core is not a
1944  legal surface-syntax symbol).  legal surface-syntax symbol).
1945    
1946  The current solution is much cleaner because the core environment is  The current solution is much cleaner because the core environment is
# Line 100  Line 1950 
1950  with dynamic and symbolic parts of the core environment.  with dynamic and symbolic parts of the core environment.
1951    
1952  Remaining hackery (to bind the "magic" symbol _Core) is localized in the  Remaining hackery (to bind the "magic" symbol _Core) is localized in the
1953  compilation mananger's bootstrap compiler (actually: in the "init group"  compilation manager's bootstrap compiler (actually: in the "init group"
1954  handling).  See the comments in src/system/smlnj/init/init.cmi for  handling).  See the comments in src/system/smlnj/init/init.cmi for
1955  more details.  more details.
1956    
# Line 215  Line 2065 
2065     (specified in the .cm file at each instance where the tool's class is     (specified in the .cm file at each instance where the tool's class is
2066     used).     used).
2067    
2068     This was done to accomodate the new "make" and "shell" tools which     This was done to accommodate the new "make" and "shell" tools which
2069     facilitate fairly seemless hookup to portions of code managed using     facilitate fairly seamless hookup to portions of code managed using
2070     Makefiles or Shell scripts.     Makefiles or Shell scripts.
2071    
2072     There are no classes "shared" or "private" anymore.  Instead, the     There are no classes "shared" or "private" anymore.  Instead, the
# Line 228  Line 2078 
2078    
2079     All existing tools are described in the CM manual.     All existing tools are described in the CM manual.
2080    
2081     - Slightly better error handling.  (CM now surpresses many followup     - Slightly better error handling.  (CM now suppresses many followup
2082     error messages that tended to be more annoying than helpful.)     error messages that tended to be more annoying than helpful.)
2083    
2084  2. Major changes to the compiler's static environment data structures.  2. Major changes to the compiler's static environment data structures.
# Line 362  Line 2212 
2212    
2213       I've changed andl to testl in the floating point test sequence       I've changed andl to testl in the floating point test sequence
2214       whenever appropriate.  The Intel optimization guide states that       whenever appropriate.  The Intel optimization guide states that
2215       testl is perferable to andl.       testl is preferable to andl.
2216    
2217  7. RA (x86 only)  7. RA (x86 only)
2218    
# Line 544  Line 2394 
2394    
2395  1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an  1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
2396  additional argument called "template" which is an optional string that  additional argument called "template" which is an optional string that
2397  specifiel the layout of the tool command line.  See the CM manual for  specifies the layout of the tool command line.  See the CM manual for
2398  explanation.  explanation.
2399    
2400  2. A special-purpose tool can be "regisitered" by simply dropping the  2. A special-purpose tool can be "registered" by simply dropping the
2401  corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same  corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
2402  directory where the .cm file lives that uses this tool.  (The  directory where the .cm file lives that uses this tool.  (The
2403  behavior/misfeature until now was to look for the tool description  behavior/misfeature until now was to look for the tool description
# Line 591  Line 2441 
2441  rebuild.  Having sets of the form <base><k>.{bin,boot}.<arch>-unix for  rebuild.  Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
2442  <k>=1,2,... is normally not a good idea when invoking fixpt.  However,  <k>=1,2,... is normally not a good idea when invoking fixpt.  However,
2443  they might be the result of an earlier partial run of fixpt (which  they might be the result of an earlier partial run of fixpt (which
2444  perhaps got accidentially killed).  In this case, fixpt will quickly  perhaps got accidentally killed).  In this case, fixpt will quickly
2445  move through what exists before continuing where it left off earlier,  move through what exists before continuing where it left off earlier,
2446  and, thus, saves a lot of time.  and, thus, saves a lot of time.
2447    
# Line 641  Line 2491 
2491    it from that remote directory.    it from that remote directory.
2492    This should simplify installation further:  For machines that have    This should simplify installation further:  For machines that have
2493    access to the internet, just fetch <version>-config.tgz, unpack it,    access to the internet, just fetch <version>-config.tgz, unpack it,
2494    edit config/targets, and go (run config/install.sh).  The scipt will    edit config/targets, and go (run config/install.sh).  The script will
2495    fetch everything else that it might need all by itself.    fetch everything else that it might need all by itself.
2496    
2497    For CVS users, this mechanism is not relevant for source archives, but    For CVS users, this mechanism is not relevant for source archives, but

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