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revision 585, Wed Mar 29 23:55:35 2000 UTC revision 640, Tue May 9 02:33:09 2000 UTC
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11  Date:  Date:
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14    ----------------------------------------------------------------------
15    Name: Allen Leung
16    Date: 2000/05/08 22:17 EDT
17    Tag: leunga-20000508-labexp
18    Description:
19    
20      Fermin has found a few assembly problems with constant expressions
21      generated in LabelExp.  Mostly, the problems involve extra parentheses,
22      which choke on dumb assemblers.  This is his fix.
23    
24    ----------------------------------------------------------------------
25    Name: Dave MacQueen
26    Date: 2000/04/09 14:00 EDT
27    Tag: dbm-20000502-Version_110_28
28    Description:
29    
30    1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
31    
32    2. Updated config/version to 110.28
33    
34    3. Updated config/srcarchiveurl
35    
36    3. New boot files!
37       ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
38    
39    ----------------------------------------------------------------------
40    Name: Matthias Blume
41    Date: 2000/05/01 19:05:00 JST
42    Tag: blume-20000501-noweb
43    Description:
44    
45    A new noweb tool has been added.  The existing system is entirely
46    unaffected by this, but some CM users have asked for renewed noweb
47    support.  Everything is documented in the CM manual.
48    
49    New (plugin) libraries:
50    
51       noweb-tool.cm
52       nw-ext.cm
53    
54    ----------------------------------------------------------------------
55    Name: Dave MacQueen
56    Date: 2000/04/30 12:40PM EDT
57    Tag: dbm-20000430-bug_fixes
58    Description:
59    
60    1. Fix for bug 1498
61       smlnj/src/system/Basis/Implementation/Unsafe/object.sig
62       smlnj/src/system/Basis/Implementation/Unsafe/object.sml
63         added toRealArray function
64       smlnj/src/compiler/MiscUtil/print/ppobj.sml
65         added check for tag Obj.RealArray to array printing case in ppObj
66    
67    2. Fix for bug 1510
68       smlnj/src/compiler/Semant/types/typesutil.sml
69         fixed definition of dummyargs (used by equalTycon) so that
70         dummy args are distinct types
71    
72    ----------------------------------------------------------------------
73    Name: Matthias Blume
74    Date: 2000/04/30 01:00:00 JST
75    Tag: blume-20000430-versions
76    Description:
77    
78    1. CM version numbering added.  This is an implementation of Lal's
79       proposal for adding version numbers and version checking to .cm
80       files.  Lal said that his proposal was just that -- a proposal.
81       For the time being I went ahead and implemented it so that people
82       can comment on it.  Everything is completely backward-compatible
83       (except for the stable library format, i.e., new bootfiles!).
84    
85       As usual, see the CM manual for details.
86    
87    2. An alternative syntax for anchored paths has been implemented.
88       Dave has recently voiced the same concerns that I had when I did
89       this, so there should be some support.  My take is that eventually
90       I will let support for the current syntax (where anchors are
91       "implicit") fade out in favor of the new, explicit syntax.
92       In order to be backward-compatible, both old and new syntax are
93       currently supported.
94    
95       Again, see the CM manual for details.
96    
97    3. Parallel make is trying to be slightly smarter:  When the master
98       process finds a "bottleneck", i.e., when there is only one
99       compilation unit that can be compiled and everybody else is
100       waiting on it, then it will simply compile it directly instead
101       of clumsily telling one of the slaves to do it.
102    
103    4. Support for "unsharing" added.  This is necessary in order to be
104       able to have two different versions of the same library running
105       at the same time (e.g., for trying out a new MLRISC while still
106       having the old MLRISC linked into the current compiler, etc.)
107       See the CM manual.
108    
109    5. Simple "makedepend" functionality added for generating Makefile
110       dependency information.  (This is rather crude at the moment.
111       Expect some changes here in the future.)
112    
113    6. ".fun" added as a recognized suffix for ML files. Also documented
114       explicitly in the manual that the fallback behavior (unknown suffix
115       -> ML file) is not an official feature!
116    
117    7. Small changes to the pickler for stable libraries.
118    
119    8. Several internal changes to CM (for cleanup/improvement).
120    
121    
122    !!!! NEW BINFILES !!!!
123    
124    ----------------------------------------------------------------------
125    Name: Matthias Blume
126    Date: 2000/04/28 17:30:00 JST
127    Tag: blume-20000428-pathconfig
128    Description:
129    
130    1. I changed config/install.sh to remove duplicate entries from the
131       lib/pathconfig file at the end.  Moreover, the final version of
132       lib/pathconfig is sorted alphabetically.  The same (sorting) is done
133       in src/system/installml.
134    
135    2. The config/install.sh script now consistently uses relative
136       pathnames in lib/pathconfig whenever the anchor is in the lib
137       directory.  (So far this was true for the libraries that come
138       pre-compiled and bundled as part of the bootfiles but not for
139       libraries that are compiled by the script itself.)
140    
141    ----------------------------------------------------------------------
142    Name: Matthias Blume
143    Date: 2000/04/26 13:10:00 JST
144    Tag: blume-20000426-fun_suffix
145    Description:
146    
147    Added ".fun" as a recognized file name suffix (for ML code).
148    
149    ----------------------------------------------------------------------
150    Name: Allen Leung
151    Date: 2000/04/25 17:00:00 EST
152    Tag: leunga-20000425-alpha-ra
153    Description:
154    
155    1. Alpha
156    
157        PSEUDOARITH was missing in AlphaRewrite.  This causes an endless loop
158    in C--.
159    
160    2. RA
161    
162       Added a flag "ra-dump-size" to print out the size of the flowgraph
163       and the interference graph.
164    
165    ----------------------------------------------------------------------
166    Name: Dave MacQueen
167    Date: 2000/04/25/
168    Tag: dbm-20000425-mlyacc_doc_examples
169    Description:
170      Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
171      Updated all three examples in src/ml-yacc/examples to run
172      under 110.* using CM.make.
173    
174    ----------------------------------------------------------------------
175    Name: Allen Leung
176    Date: 2000/04/20 23:04:00 EST
177    Tag: leunga-20000420-ssa-c---stuff
178    Description:
179    
180      This update synchronizes my repository with Yale's.  Most of these
181    changes, however, do not affect SML/NJ at all (the RA is an exception).
182    
183    1. Register Allocator
184    
185       a. An improvement in the interference graph construction:
186          Given a copy
187    
188                s <- t
189    
190          no interference edge between s and t is added for this definition of s.
191    
192       b. I've added two new spill heuristic modules that Fermin and I developed
193          (in the new library RA.cm). These are unused in SML/NJ but maybe
194          useful for others (Moby?)
195    
196    2. X86
197    
198       a. Various fixes in the backend provided by Fermin [C--] and Lal.
199    
200    3. Alpha
201    
202       a. Added the BSR instruction and code generation that goes with it [C--]
203       b. Other fixes too numerous to recount provided by Fermin [C--]
204    
205    4. Regmaps
206    
207       a. The regmaps are not initialized with the identity physical bindings
208          at creation time.  This is unneeded.
209    
210    5. MLRISC Optimizations
211    
212       a. The DJ-Graph module can now compute the iterated dominance frontiers
213          intersects with liveness incrementally in linear time! Woohoo!
214          This is now used in my new SSA construction algorithm.
215    
216       b. THe branch reorganization module is now smarter about linear chains of
217          basic blocks.
218    
219    
220    ----------------------------------------------------------------------
221    Name: Matthias Blume
222    Date: 2000/04/12 13:52:00 JST
223    Tag: blume_main_v110p27_1
224    Description:
225    
226    Changed install.sh script to handle archive files without version number
227    and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
228    name of the boot file archive.
229    
230    ----------------------------------------------------------------------
231    Name: Dave MacQueen
232    Date: 2000/04/09 14:00 EDT
233    Tag: dbm-20000410-Version_110_27
234    Description:
235    
236    1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
237    
238    2. Updated src/config/version to 110.27
239    
240    3. New boot files!
241    
242    ----------------------------------------------------------------------
243    Name: Allen Leung
244    Date: 2000/04/09 19:09:00 EST
245    Tag: leunga-20000409-misc
246    Description:
247    
248    1.  Yet another fix for x86 assembly for idivl, imull, mull and friends.
249    
250    2.  Miscellaneous improvements to MLRISC (unused in sml/nj)
251    
252    ----------------------------------------------------------------------
253    Name: Stefan
254    Date: 2000/04/07 10:00:00 EDT
255    Tag: monnier-20000406-branch-handling
256    Description:
257    
258    Improved handling of branches (mostly those generated from
259    polymorphic equality), removed switchoff and changed the
260    default optimization settings (more cpsopt and less flintopt).
261    
262    ----------------------------------------------------------------------
263    Name: Allen Leung
264    Date: 2000/04/06 01:30:00 EST
265    Tag: leunga-20000406-peephole-x86-SSA-2
266    Description:
267    
268       Forgot a few files.
269    
270    ----------------------------------------------------------------------
271    Name: Allen Leung
272    Date: 2000/04/06 00:36:00 EST
273    Tag: leunga-20000406-peephole-x86-SSA
274    Description:
275    
276    1.  New Peephole code
277    
278    2.  Minor improvement to X86 instruction selection
279    
280    3.  Various fixes to SSA and machine description -> code translator
281    
282    ----------------------------------------------------------------------
283    Name: Matthias Blume
284    Date: 2000/04/05 12:30:00 JST
285    Tag: blume_main_v110p26p2_3
286    Description:
287    
288    This update just merges three minor cosmetic updates to CM's sources
289    to get ready for the 110.27 code freeze on Friday.  No functionality
290    has changed.
291    
292    ----------------------------------------------------------------------
293    Name: Allen Leung
294    Date: 2000/04/04 19:39:00 EST
295    Tag: leunga-20000404-x86-asm
296    Description:
297    
298    1.  Fixed a problem in X86 assembly.
299    
300        Things like
301    
302           jmp %eax
303           jmp (%eax)
304    
305        should be output as
306    
307           jmp *%eax
308           jmp *(%eax)
309    
310    2.  Assembly output
311    
312          Added a new flag
313    
314              "asm-indent-copies" (default to false)
315    
316          When this flag is on, parallel copies will be indented an extra level.
317    
318    ----------------------------------------------------------------------
319    Name: Allen Leung
320    Date: 2000/04/04 03:18:00 EST
321    Tag: leunga-20000404-C--Moby
322    Description:
323    
324        All of these fixes are related to C--, Moby, and my own optimization
325        stuff; so they shouldn't affect SML/NJ.
326    
327    1.  X86
328    
329        Various fixes related floating point, and extensions.
330    
331    2.  Alpha
332    
333        Some extra patterns related to loads with signed/zero extension
334        provided by Fermin.
335    
336    3.  Assembly
337    
338        When generating assemby, resolve the value of client defined constants,
339        instead of generating symbolic values.  This is controlled by the
340        new flag "asm-resolve-constants", which is default to true.
341    
342    4.  Machine Descriptions
343    
344        a. The precedence parser was slightly broken when parsing infixr symbols.
345        b. The type generalizing code had the bound variables reversed, resulting
346           in a problem during arity raising.
347        c. Various fixes in machine descriptions.
348    
349    ----------------------------------------------------------------------
350    Name: Matthias Blume
351    Date: 2000/04/03 16:05:00 JST
352    Tag: blume_main_v110p26p2_2
353    Description:
354    
355    I eliminated coreEnv from compInfo.  Access to the "Core" structure is
356    now done via the ordinary static environment that is context to each
357    compilation unit.
358    
359    To this end, I arranged that instead of "structure Core" as "structure
360    _Core" is bound in the pervasive environment.  Core access is done via
361    _Core (which can never be accidentially rebound because _Core is not a
362    legal surface-syntax symbol).
363    
364    The current solution is much cleaner because the core environment is
365    now simply part of the pervasive environment which is part of every
366    compilation unit's context anyway.  In particular, this eliminates all
367    special-case handling that was necessary until now in order to deal
368    with dynamic and symbolic parts of the core environment.
369    
370    Remaining hackery (to bind the "magic" symbol _Core) is localized in the
371    compilation mananger's bootstrap compiler (actually: in the "init group"
372    handling).  See the comments in src/system/smlnj/init/init.cmi for
373    more details.
374    
375    I also tried to track down all mentions of "Core" (as string argument
376    to Symbol.strSymbol) in the compiler and replaced them with a
377    reference to the new CoreSym.coreSym.  Seems cleaner since the actual
378    name appears in one place only.
379    
380    Binfile and bootfile format have not changed, but the switchover from
381    the old "init.cmi" to the new one is a bit tricky, so I supplied new
382    bootfiles anyway.
383    
384    ----------------------------------------------------------------------
385    Name: Allen Leung
386    Date: 2000/04/02 21:17:00 EST
387    Tag: leunga-20000402-mltree
388    Description:
389    
390       1. Renamed the constructor CALL in MLTREE by popular demand.
391       2. Added a bunch of files from my repository.  These are currently
392          used by other non-SMLNJ backends.
393    
394    ----------------------------------------------------------------------
395    Name: Allen Leung
396    Date: 2000/03/31 21:15:00 EST
397    Tag: leunga-20000331-aliasing
398    Description:
399    
400    This update contains a rewritten (and hopefully more correct) module
401    for extracting aliasing information from CPS.
402    
403       To turn on this feature:
404    
405            Compiler.Control.CG.memDisambiguate := true
406    
407       To pretty print the region information with assembly
408    
409           Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
410    
411       To control how many levels of aliasing information are printed, use:
412    
413           Compiler.Control.MLRISC.getInt "points-to-show-level" := n
414    
415       The default of n is 3.
416    
417    ----------------------------------------------------------------------
418    Name: David MacQueen
419    Date: 2000/03/31 11:15:00 EST
420    Tag: dbm-20000331-runtime_fix
421    Description:
422    
423    This update contains:
424    
425    1. runtime/c-lib/c-libraries.c
426       includes added in revision 1.2 caused compilation errors on hppa-hpux
427    
428    2. fix for bug 1556
429       system/Basis/Implementation/NJ/internal-signals.sml
430    
431    ----------------------------------------------------------------------
432    Name: Matthias Blume
433    Date: 2000/03/31 18:00:00 JST
434    Tag: blume_main_v110p26p2_1
435    Description:
436    
437    This update contains:
438    
439    1. A small change to CM's handling of stable libraries:
440       CM now maintains one "global" modmap that is used for all stable
441       libraries.  The use of such a global modmap maximizes sharing and
442       minimizes the need for re-traversing parts of environments during
443       modmap construction.  (However, this has minor impact since modmap
444       construction seems to account for just one percent or less of total
445       compile time.)
446    
447    2. I added a "genmap" phase to the statistics.  This is where I got the
448       "one percent" number (see above).
449    
450    3. CM's new tool parameter mechanism just became _even_ better. :)
451       - The parser understands named parameters and recursive options.
452       - The "make" and "shell" tools use these new features.
453         (This makes it a lot easier to cascade these tools.)
454       - There is a small syntax change: named parameters use a
455    
456           <name> : ( <option> ... )            or
457           <name> : <string>
458    
459         syntax.  Previously, named parameters were implemented in an
460         ad-hoc fashion by each tool individually (by parsing strings)
461         and had the form
462    
463           <name>=<string>
464    
465       See the CM manual for a full description of these issues.
466    
467    ----------------------------------------------------------------------
468    Name: Matthias Blume
469    Date: 2000/03/30 18:00:00 JST
470    Tag: blume_main_v110p26p2_0
471    Description:
472    
473    !!!!! WARNING !!!!!!
474    !!  New binfiles  !!
475    !!!!!!!!!!!!!!!!!!!!
476    
477    This update contains:
478    
479    1. Moderate changes to CM:
480    
481       - Changes to CM's tools mechanism.  In particular, it is now possible
482       to have tools that accept additional "command line" parameters
483       (specified in the .cm file at each instance where the tool's class is
484       used).
485    
486       This was done to accomodate the new "make" and "shell" tools which
487       facilitate fairly seemless hookup to portions of code managed using
488       Makefiles or Shell scripts.
489    
490       There are no classes "shared" or "private" anymore.  Instead, the
491       sharing annotation is now a parameter to the "sml" class.
492    
493       There is a bit of generic machinery for implementing one's own
494       tools that accept command-line parameters.  However, I am not yet fully
495       satisfied with that part, so expect changes here in the future.
496    
497       All existing tools are described in the CM manual.
498    
499       - Slightly better error handling.  (CM now surpresses many followup
500       error messages that tended to be more annoying than helpful.)
501    
502    2. Major changes to the compiler's static environment data structures.
503    
504       - no CMStaticEnv anymore.
505            - no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
506              but it is called Environment), no conversions between different
507              kinds of static environments
508    
509       - There is still a notion of a "modmap", but such modmaps are generated
510         on demand at the time when they are needed.  This sounds slow, but I
511         sped up the code that generates modmaps enough for this not to lead to
512         a slowdown of the compiler (at least I didn't detect any).
513    
514       - To facilitate rapid modmap generation, static environments now
515         contain an (optional) "modtree" structure.  Modtree annotations are
516         constructed by the unpickler during unpickling.  (This means that
517         the elaborator does not have to worry about modtrees at all.)
518         Modtrees have the advantage that they are compositional in the same
519         way as the environment data structure itself is compositional.
520         As a result, modtrees never hang on to parts of an environment that
521         has already been rendered "stale" by filtering or rebinding.
522    
523       - I went through many, many trials and errors before arriving at the
524         current solution.  (The initial idea of "linkpaths" did not work.)
525         But the result of all this is that I have touched a lot of files that
526         depend on the "modules" and "types" data structures (most of the
527         elaborator). There were a lot of changes during my "linkpath" trials
528         that could have been reverted to their original state but weren't.
529         Please, don't be too harsh on me for messing with this code a bit more
530         than what was strictly necessary...  (I _did_ resist the tempation
531         of doing any "global reformatting" to avoid an untimely death at
532         Dave's hands. :)
533    
534       - One positive aspect of the previous point:  At least I made sure that
535         all files that I touched now compile without warnings (other than
536         "polyEqual").
537    
538       - compiler now tends to run "leaner" (i.e., ties up less memory in
539         redundant modmaps)
540    
541  ----------------------------------------------------------------------  ----------------------------------------------------------------------
542  Name: Allen Leung  Name: Allen Leung
543  Date: 2000/03/29 18:00:00  Date: 2000/03/29 18:00:00
544  Tag: leunga-20000327-mlriscGen_hppa_alpha_x86  Tag: leunga-20000327-mlriscGen_hppa_alpha_x86
545    Boot files (optional): ftp://react-ilp.cs.nyu.edu/leunga/110.26.1-sml.boot.x86-unix-20000330.tar.gz
546  Description:  Description:
547    
548     This update contains *MAJOR* changes to the way code is generated from CPS     This update contains *MAJOR* changes to the way code is generated from CPS

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