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revision 572, Thu Mar 9 02:43:06 2000 UTC revision 666, Fri Jun 16 08:27:00 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: Matthias Blume
16    Date: 2000/06/16 17:30:00 JST
17    Tag: blume-20000616-anchorenv
18    Description:
19    
20    This patch implements the long anticipated (just kidding :) "anchor
21    environment" mechanism.  In the course of doing this, I also
22    re-implemented CM's internal "SrcPath" module from scratch.  The new
23    one should be more robust in certain boundary cases.  In any case, it
24    is a lot cleaner than its predecessor (IMHO).
25    
26    This time, although there is yet another boot file format change, I
27    kept the unpickler backward-compatible.  As a result, no new bootfiles
28    are necessary and bootstrapping is straightforward.  (You cannot read
29    new bootfiles into an old system, but the other way around is no
30    problem.)
31    
32    Visible changes:
33    
34    ** 1. The $<singlearc> abbreviation for $/<singlearc> for anchored
35    paths has finally vanished.
36    
37    John had critizised this as soon as I originally proposed and
38    implemented it, but at that time I did not really deeply believe
39    him. :) Now I came full-circle because I need the $<singlearc> syntax
40    in another place where it cannot be seen as an abbreviation for
41    $/<singlearc>.  To avoid the confusion, $<singlearc> now means what it
42    seems to mean (i.e., it "expands" into the corresponding anchor
43    value).
44    
45    However, when paths are used as members in CM description files, it
46    continues to be true that there must be at least another arc after the
47    anchor.  This is now enforced separately during semantic analysis
48    (i.e., form a lexical/syntactical point of view, the notation is ok.)
49    
50    ** 2. The "cm" class now accepts an option "bind".  The option's value
51    is a sub-option list of precisely two items -- one labeled "anchor"
52    and the other one labeled "value".  As you might expect, "anchor" is
53    used to specify an anchor name to be bound, and "value" specifies what
54    the anchor is being bound to.
55    
56    The value must be a directory name and can be given in either standard
57    syntax (including the possibility that it is itself an anchored path)
58    or native syntax.
59    
60    Examples:
61    
62       foo.cm (bind:(anchor:bar value:$mystuff/bar))
63       lib.cm (bind:(anchor:a value:"H:\\x\\y\\z"))  (* only works under windows *)
64    
65    and so on.
66    
67    The meaning of this is that the .cm-file will be processed with an
68    augmented anchor environment where the given anchor(s) is/are bound to
69    the given values(s).
70    
71    The rationale for having this feature is this: Suppose you are trying
72    to use two different (already stable) libraries a.cm and b.cm (that
73    you perhaps didn't write yourself).  Further, suppose each of these
74    two libraries internally uses its own auxiliary library $aux/lib.cm.
75    Normally you would now have a problem because the anchor "lib" can not
76    be bound to more than one value globally.  Therefore, the project that
77    uses both a.cm and b.cm must locally redirect the anchor to some other
78    place:
79    
80       a.cm (bind:(anchor:lib value:/usr/lib/smlnj/a-stuff))
81       b.cm (bind:(anchor:lib value:/usr/lib/smlnj/b-stuff))
82    
83    This hard-wires $lib/aux.cm to /usr/lib/smlnj/a-stuff/aux.cm or
84    /usr/lib/smlnj/b-stuff/aux.cm, respectively.
85    
86    Hard-wiring path names is a bit inflexible (and CM will verbosely warn
87    you when you do so at the time of CM.stabilize).  Therefore, you can
88    also use an anchored path as the value:
89    
90      a.cm (bind:(anchor:lib value:$a-lib))
91      b.cm (bind:(anchor:lib value:$b-lib))
92    
93    Now you can globally configure (using the usual CM.Anchor.anchor or
94    pathconfig machinery) bindings for "a-lib" and "b-lib".  Since "lib"
95    itself is always locally bound, setting it globally is no longer
96    meaningful or necessary (but it does not hurt either).  In fact, "lib"
97    can still be used as a global anchor for separate purposes.  As a
98    matter of fact, one can locally define "lib" in terms of a global
99    "lib":
100    
101      a.cm (bind:(anchor:lib value:$lib/a))
102      b.cm (bind:(anchor:lib value:$lib/b))
103    
104    ** 3: The encoding of path names has changed.  This affects the way
105    path names are shown in CM's progress report and also the internal
106    protocol encoding used for parallel make.
107    
108    The encoding now uses one or more ':'-separated segments.  Each
109    segments corresponds to a file that has been specified relative to the
110    file given by its preceding segment.  The first segment is either
111    relative to the CWD, absolute, or anchored.  Each segment itself is
112    basically a Unix pathname; all segments but the first are relative.
113    
114    Example:
115    
116       $foo/bar/baz.cm:a/b/c.sml
117    
118    This path denotes the file bar/a/b/c.sml relative to the directory
119    denoted by anchor "foo".  Notice that the encoding also includes
120    baz.cm which is the .cm-file that listed a/b/c.sml.  As usual, such
121    paths are resolved relative to the .cm-files directory, so baz.cm must
122    be ignored to get the "real" pathname.
123    
124    To make this fact more obvious, CM puts the names of such "virtual
125    arcs" into parentheses when they appear in progress reports. (No
126    parentheses will appear in the internal protocol encoding.)  Thus,
127    what you really see is:
128    
129      $foo/bar/(baz.cm):a/b/c.sml
130    
131    I find this notation to be much more informative than before.
132    
133    Another new feature of the encoding is that special characters
134    including parentheses, colons, (back)slashes, and white space are
135    written as \ddd (where ddd is the decimal encoding of the character).
136    
137    ----------------------------------------------------------------------
138    Name: Allen Leung
139    Date: 2000/06/15 00:38:00
140    Tag: leunga-20000615-x86-peephole
141    
142    x86 Peephole fix by Fermin.  Affects c-- and moby only.
143    
144    ----------------------------------------------------------------------
145    Name: Matthias Blume
146    Date: 2000/06/12 11:40:00
147    Tag: blume-20000612-parmakefix
148    Description:
149    
150    More cleanup after changing the file naming scheme: This time I
151    repaired the parallel make mechanism for CMB.make which I broke earlier.
152    
153    ----------------------------------------------------------------------
154    Name: Allen Leung
155    Date: 2000/06/09 01:25:00
156    Tag: leunga-20000609-various
157    
158    None of these things should affect normal SML/NJ operations
159    
160    1. Peephole improvements provided by Fermin (c--)
161    2. New annotation DEFUSE for adding extra dependence (moby)
162    3. New X86 LOCK instructions (moby)
163    4. New machine description language for reservation tables (scheduling)
164    5. Fixes to various optimization/analysis modules (branch chaining, dominator
165       trees etc.)
166    6. I've changed the CM files so that they can work with versions
167       110.0.6, 110.25 and 110.28
168    
169    ----------------------------------------------------------------------
170    Name: Matthias Blume
171    Date: 2000/06/09 12:40:00
172    Tag: blume-20000609-log
173    Description:
174    
175    - Removed all(?) remaining RCS Log entries from sources.
176    
177    - Fixed bug in ml-yacc and ml-lex sources (use explicit anchors for
178      anchored paths).
179    
180    ----------------------------------------------------------------------
181    Name: Matthias Blume
182    Date: 2000/06/07 17:00:00 JST
183    Tag: blume-20000607-no-implicit-anchors
184    Description:
185    
186    1. This update changes the default setting for
187    CM.Control.implicit_anchors from true to false.  This means that
188    implicit anchors are no longer permitted by default.  I also tried to
189    make sure that nothing else still relies on implicit anchors.
190    (This is the next step on the schedule towards a CM that does not even
191    have the notion of implicit anchors anymore.)
192    
193    2. More CM manual updates.
194    
195    3. I managed to track down and fix the pickling bug I mentioned last
196    time.  Because of the previously existing workaround, this entails no
197    immediate practical changes.
198    
199    ----------------------------------------------------------------------
200    Name: Matthias Blume
201    Date: 2000/06/06 11:15:00 JST
202    Tag: blume-20000606-lazierpickle
203    Description:
204    
205    !!!! NEW BOOT FILES !!!!
206    
207    * The main purpose of this update is to make library pickles lazier in
208    order to reduce the initial space penalty for autoloading a library.
209    As a result, it is now possible to have $smlnj/compiler.cm
210    pre-registered.  This should take care of the many complaints or
211    inquiries about missing structure Compiler.  This required changes to
212    CM's internal data structures and small tweaks to some algorithms.
213    
214    As a neat additional effect, it is no longer necessary (for the sake
215    of lean heap image files) to distinguish between a "minimal" CM and a
216    "full" CM.  Now, there is only one CM (i.e., the "full" version:
217    $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
218    interactive top level. ($smlnj/cm/minimal.cm is gone.)
219    
220    To make the life of compiler-hackers easier, "makeml" now also
221    pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm).  In other
222    words, after you bootstrap a new sml for the first time, you will not
223    have to autoload $smlnj/cmb.cm again afterwards.  (The first time
224    around you will still have to do it, though.)
225    
226    * A second change consists of major updates to the CM manual.  There
227    are now several appendices with summary information and also a full
228    specification of the CM description file syntax.
229    
230    * In directory src/system I added the script "allcross".  This script
231    invokes sml and cross-compiles the compiler for all supported
232    architectures.  (Useful when providing a new set of boot files.)
233    
234    * There seems to be a latent bug in my "lazy pickles" mechanism.  I
235    added a small tweak to pickle-util.sml to work around this problem,
236    but it is not a proper fix yet.  I will investigate further.  (The
237    effect of the bug was an inflation of library pickle size.)
238    
239    * Version number increased to 110.28.1 (to avoid compatibility problems).
240    
241    ----------------------------------------------------------------------
242    Name: Allen Leung
243    Date: 2000/05/25 17:28 EDT
244    Tag: leunga-20000525-ra
245    Description:
246    
247      Fixed a bug in freezing phase of the register allocator.
248    
249    ----------------------------------------------------------------------
250    Name: Allen Leung
251    Date: 2000/05/15 22:53 EDT
252    Tag: leunga-20000515-alpha-x86-ra
253    Description:
254    
255      1. Alpha
256    
257          Slight cleanup.  Removed the instruction SGNXL
258    
259      2. X86
260    
261          Added the following instructions to the instruction set:
262    
263            ROLx, RORx,
264            BTx, BTSx, BTLx, BTRx,
265            XCHGx, and variants with the LOCK prefix
266    
267      3. Register Allocation
268    
269          The module ra-rewrite-with-renaming has been improved.
270    
271      These have no effect on SML/NJ.
272    
273    ----------------------------------------------------------------------
274    Name: Matthias Blume
275    Date: 2000/05/15 16:20:00 JST
276    Tag: blume-20000515-lightrebuild
277    Description:
278    
279    1. I added an alternative to "-rebuild" to "makeml".  The difference is
280       that prior to calling CMB.make' the CM-variable "LIGHT" will be
281       defined.  In effect, the command will not build any cross-compiler
282       backends and therefore finish more quickly.
283    
284       The "fixpt" script also takes a "-light" switch to be able to use
285       this new facility while compiling for a fixpoint.
286    
287    2. I replaced all mentions of anchored paths in group owner specifications
288       with simple relative paths (usually starting with "..").
289       The rationale is that a library's internal workings should not be
290       compromised by the lack of some anchor.  (An anchor is necessary
291       for someone who wants to refer to the library by an anchored path,
292       but it should not be necessary to build the same library in the first
293       place.)
294    
295    3. I changed the way CM's tool mechanism determines the shell command
296       string used for things like ml-yacc etc. so that it does not break
297       when CM.Control.implicit_anchors is turned off.
298    
299    ----------------------------------------------------------------------
300    Name: Matthias Blume
301    Date: 2000/05/12 18:20:00 JST
302    Tag: blume-20000512-ml-build
303    Description:
304    
305    Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
306    getting installed properly (by config/install.sh).
307    
308    ----------------------------------------------------------------------
309    Name: Matthias Blume
310    Date: 2000/05/12 17:30:00 JST
311    Tag: blume-20000512-anchors
312    Description:
313    
314    !!! NEW BOOT FILES !!!
315    
316    This change is in preparation of fading out support for "implicitly
317    anchored path names".  I went through all sources and used the
318    explicit (and relatively new) $-notation.  See system/README and the
319    CM manual for more info on this.
320    
321    I also modified the anchoring scheme for some things such as "smlnj",
322    "MLRISC", "cm", etc. to take advantage of the fact that explicit
323    anchors are more expressive: anchor name and first arc do not have to
324    coincide.  This entails the following user-visible change:
325    
326    You have to write $smlnj/foo/bar instead of smlnj/foo/bar.  In
327    particular, when you fire up sml with a command-line argument, say,
328    e.g.:
329    
330       sml '$smlnj/cmb.cm'
331    
332    At the ML toplevel prompt:
333    
334       CM.autoload "$smlnj/cmb.cm";
335    
336    There is also a new controller in CM.Control that can be used to turn
337    off all remaining support for implicit anchors by saying:
338    
339        CM.autoload "$smlnj/
340        #set CM.Control.implicit_anchors false;
341    
342    This causes CM to reject implicitly anchored paths.  This is (for the
343    time being) less permissive than the "final" version where there will
344    be no more such implicit anchors and relative paths will be just that:
345    relative.
346    
347    The next step (version after next version?) will be to make the
348    default for CM.Control.implicit_anchors false.  After the dust has
349    settled, I can then produce the "final" version of this...
350    
351    Note: Since bootstrapping is a bit tricky, I provided new boot files.
352    
353    ----------------------------------------------------------------------
354    Name: Matthias Blume
355    Date: 2000/05/11 16:30:00 JST
356    Tag: blume-20000511-sources
357    Description:
358    
359    The main change is that I added function CM.sources as a generalized
360    version of the earlier CM.makedepend.  This entails the following
361    additional changes:
362    
363      - CM.makedepend has been dropped.
364    
365      - CM manual has been updated.
366    
367      - TOOLS signature and API have been changed.
368    
369    ----------------------------------------------------------------------
370    Name: Allen Leung
371    Date: 2000/05/10 21:17 EDT
372    Tag: leunga-20000510-moby-c--ssa
373    Description:
374    
375      Various bug fixes and new features for C--, Moby and MLRISC optimizations.
376    None of these affect SML/NJ.
377    
378    1. Register Allocation
379    
380        a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
381           This module tries to remove local (i.e. basic block level) redundancies
382           during spilling.
383    
384        b. A new framework for performing region based register allocation.
385           Not yet entirely functional.
386    
387    2. X86
388    
389       a. DefUse for POP was missing the stack pointer [found by Lal]
390       b. Reload for CALL was incorrect in X86Spill [found by John]
391       c. Various fixes in X86Spill so that it can be used correctly for
392          the new spilling module.
393    
394    3. SSA/IR
395    
396       a. New module ir/dj-dataflow.sml implements elimination based
397          data flow analysis.
398    
399    4. MLRiscGen
400    
401       a. Fix for gc type annotation
402    
403    5. MDGen
404    
405       Various fixes for machine description -> ml code translation.  For ssa
406       only.
407    
408    ----------------------------------------------------------------------
409    Name: Allen Leung
410    Date: 2000/05/08 22:17 EDT
411    Tag: leunga-20000508-labexp
412    Description:
413    
414      Fermin has found a few assembly problems with constant expressions
415      generated in LabelExp.  Mostly, the problems involve extra parentheses,
416      which choke on dumb assemblers.  This is his fix.
417    
418    ----------------------------------------------------------------------
419    Name: Dave MacQueen
420    Date: 2000/04/09 14:00 EDT
421    Tag: dbm-20000502-Version_110_28
422    Description:
423    
424    1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
425    
426    2. Updated config/version to 110.28
427    
428    3. Updated config/srcarchiveurl
429    
430    3. New boot files!
431       ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
432    
433    ----------------------------------------------------------------------
434    Name: Matthias Blume
435    Date: 2000/05/01 19:05:00 JST
436    Tag: blume-20000501-noweb
437    Description:
438    
439    A new noweb tool has been added.  The existing system is entirely
440    unaffected by this, but some CM users have asked for renewed noweb
441    support.  Everything is documented in the CM manual.
442    
443    New (plugin) libraries:
444    
445       noweb-tool.cm
446       nw-ext.cm
447    
448    ----------------------------------------------------------------------
449    Name: Dave MacQueen
450    Date: 2000/04/30 12:40PM EDT
451    Tag: dbm-20000430-bug_fixes
452    Description:
453    
454    1. Fix for bug 1498
455       smlnj/src/system/Basis/Implementation/Unsafe/object.sig
456       smlnj/src/system/Basis/Implementation/Unsafe/object.sml
457         added toRealArray function
458       smlnj/src/compiler/MiscUtil/print/ppobj.sml
459         added check for tag Obj.RealArray to array printing case in ppObj
460    
461    2. Fix for bug 1510
462       smlnj/src/compiler/Semant/types/typesutil.sml
463         fixed definition of dummyargs (used by equalTycon) so that
464         dummy args are distinct types
465    
466    ----------------------------------------------------------------------
467    Name: Matthias Blume
468    Date: 2000/04/30 01:00:00 JST
469    Tag: blume-20000430-versions
470    Description:
471    
472    1. CM version numbering added.  This is an implementation of Lal's
473       proposal for adding version numbers and version checking to .cm
474       files.  Lal said that his proposal was just that -- a proposal.
475       For the time being I went ahead and implemented it so that people
476       can comment on it.  Everything is completely backward-compatible
477       (except for the stable library format, i.e., new bootfiles!).
478    
479       As usual, see the CM manual for details.
480    
481    2. An alternative syntax for anchored paths has been implemented.
482       Dave has recently voiced the same concerns that I had when I did
483       this, so there should be some support.  My take is that eventually
484       I will let support for the current syntax (where anchors are
485       "implicit") fade out in favor of the new, explicit syntax.
486       In order to be backward-compatible, both old and new syntax are
487       currently supported.
488    
489       Again, see the CM manual for details.
490    
491    3. Parallel make is trying to be slightly smarter:  When the master
492       process finds a "bottleneck", i.e., when there is only one
493       compilation unit that can be compiled and everybody else is
494       waiting on it, then it will simply compile it directly instead
495       of clumsily telling one of the slaves to do it.
496    
497    4. Support for "unsharing" added.  This is necessary in order to be
498       able to have two different versions of the same library running
499       at the same time (e.g., for trying out a new MLRISC while still
500       having the old MLRISC linked into the current compiler, etc.)
501       See the CM manual.
502    
503    5. Simple "makedepend" functionality added for generating Makefile
504       dependency information.  (This is rather crude at the moment.
505       Expect some changes here in the future.)
506    
507    6. ".fun" added as a recognized suffix for ML files. Also documented
508       explicitly in the manual that the fallback behavior (unknown suffix
509       -> ML file) is not an official feature!
510    
511    7. Small changes to the pickler for stable libraries.
512    
513    8. Several internal changes to CM (for cleanup/improvement).
514    
515    
516    !!!! NEW BINFILES !!!!
517    
518    ----------------------------------------------------------------------
519    Name: Matthias Blume
520    Date: 2000/04/28 17:30:00 JST
521    Tag: blume-20000428-pathconfig
522    Description:
523    
524    1. I changed config/install.sh to remove duplicate entries from the
525       lib/pathconfig file at the end.  Moreover, the final version of
526       lib/pathconfig is sorted alphabetically.  The same (sorting) is done
527       in src/system/installml.
528    
529    2. The config/install.sh script now consistently uses relative
530       pathnames in lib/pathconfig whenever the anchor is in the lib
531       directory.  (So far this was true for the libraries that come
532       pre-compiled and bundled as part of the bootfiles but not for
533       libraries that are compiled by the script itself.)
534    
535    ----------------------------------------------------------------------
536    Name: Matthias Blume
537    Date: 2000/04/26 13:10:00 JST
538    Tag: blume-20000426-fun_suffix
539    Description:
540    
541    Added ".fun" as a recognized file name suffix (for ML code).
542    
543    ----------------------------------------------------------------------
544    Name: Allen Leung
545    Date: 2000/04/25 17:00:00 EST
546    Tag: leunga-20000425-alpha-ra
547    Description:
548    
549    1. Alpha
550    
551        PSEUDOARITH was missing in AlphaRewrite.  This causes an endless loop
552    in C--.
553    
554    2. RA
555    
556       Added a flag "ra-dump-size" to print out the size of the flowgraph
557       and the interference graph.
558    
559    ----------------------------------------------------------------------
560    Name: Dave MacQueen
561    Date: 2000/04/25/
562    Tag: dbm-20000425-mlyacc_doc_examples
563    Description:
564      Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
565      Updated all three examples in src/ml-yacc/examples to run
566      under 110.* using CM.make.
567    
568    ----------------------------------------------------------------------
569    Name: Allen Leung
570    Date: 2000/04/20 23:04:00 EST
571    Tag: leunga-20000420-ssa-c---stuff
572    Description:
573    
574      This update synchronizes my repository with Yale's.  Most of these
575    changes, however, do not affect SML/NJ at all (the RA is an exception).
576    
577    1. Register Allocator
578    
579       a. An improvement in the interference graph construction:
580          Given a copy
581    
582                s <- t
583    
584          no interference edge between s and t is added for this definition of s.
585    
586       b. I've added two new spill heuristic modules that Fermin and I developed
587          (in the new library RA.cm). These are unused in SML/NJ but maybe
588          useful for others (Moby?)
589    
590    2. X86
591    
592       a. Various fixes in the backend provided by Fermin [C--] and Lal.
593    
594    3. Alpha
595    
596       a. Added the BSR instruction and code generation that goes with it [C--]
597       b. Other fixes too numerous to recount provided by Fermin [C--]
598    
599    4. Regmaps
600    
601       a. The regmaps are not initialized with the identity physical bindings
602          at creation time.  This is unneeded.
603    
604    5. MLRISC Optimizations
605    
606       a. The DJ-Graph module can now compute the iterated dominance frontiers
607          intersects with liveness incrementally in linear time! Woohoo!
608          This is now used in my new SSA construction algorithm.
609    
610       b. THe branch reorganization module is now smarter about linear chains of
611          basic blocks.
612    
613    
614    ----------------------------------------------------------------------
615    Name: Matthias Blume
616    Date: 2000/04/12 13:52:00 JST
617    Tag: blume_main_v110p27_1
618    Description:
619    
620    Changed install.sh script to handle archive files without version number
621    and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
622    name of the boot file archive.
623    
624    ----------------------------------------------------------------------
625    Name: Dave MacQueen
626    Date: 2000/04/09 14:00 EDT
627    Tag: dbm-20000410-Version_110_27
628    Description:
629    
630    1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
631    
632    2. Updated src/config/version to 110.27
633    
634    3. New boot files!
635    
636    ----------------------------------------------------------------------
637    Name: Allen Leung
638    Date: 2000/04/09 19:09:00 EST
639    Tag: leunga-20000409-misc
640    Description:
641    
642    1.  Yet another fix for x86 assembly for idivl, imull, mull and friends.
643    
644    2.  Miscellaneous improvements to MLRISC (unused in sml/nj)
645    
646    ----------------------------------------------------------------------
647    Name: Stefan
648    Date: 2000/04/07 10:00:00 EDT
649    Tag: monnier-20000406-branch-handling
650    Description:
651    
652    Improved handling of branches (mostly those generated from
653    polymorphic equality), removed switchoff and changed the
654    default optimization settings (more cpsopt and less flintopt).
655    
656    ----------------------------------------------------------------------
657    Name: Allen Leung
658    Date: 2000/04/06 01:30:00 EST
659    Tag: leunga-20000406-peephole-x86-SSA-2
660    Description:
661    
662       Forgot a few files.
663    
664    ----------------------------------------------------------------------
665    Name: Allen Leung
666    Date: 2000/04/06 00:36:00 EST
667    Tag: leunga-20000406-peephole-x86-SSA
668    Description:
669    
670    1.  New Peephole code
671    
672    2.  Minor improvement to X86 instruction selection
673    
674    3.  Various fixes to SSA and machine description -> code translator
675    
676    ----------------------------------------------------------------------
677    Name: Matthias Blume
678    Date: 2000/04/05 12:30:00 JST
679    Tag: blume_main_v110p26p2_3
680    Description:
681    
682    This update just merges three minor cosmetic updates to CM's sources
683    to get ready for the 110.27 code freeze on Friday.  No functionality
684    has changed.
685    
686    ----------------------------------------------------------------------
687    Name: Allen Leung
688    Date: 2000/04/04 19:39:00 EST
689    Tag: leunga-20000404-x86-asm
690    Description:
691    
692    1.  Fixed a problem in X86 assembly.
693    
694        Things like
695    
696           jmp %eax
697           jmp (%eax)
698    
699        should be output as
700    
701           jmp *%eax
702           jmp *(%eax)
703    
704    2.  Assembly output
705    
706          Added a new flag
707    
708              "asm-indent-copies" (default to false)
709    
710          When this flag is on, parallel copies will be indented an extra level.
711    
712    ----------------------------------------------------------------------
713    Name: Allen Leung
714    Date: 2000/04/04 03:18:00 EST
715    Tag: leunga-20000404-C--Moby
716    Description:
717    
718        All of these fixes are related to C--, Moby, and my own optimization
719        stuff; so they shouldn't affect SML/NJ.
720    
721    1.  X86
722    
723        Various fixes related floating point, and extensions.
724    
725    2.  Alpha
726    
727        Some extra patterns related to loads with signed/zero extension
728        provided by Fermin.
729    
730    3.  Assembly
731    
732        When generating assembly, resolve the value of client defined constants,
733        instead of generating symbolic values.  This is controlled by the
734        new flag "asm-resolve-constants", which is default to true.
735    
736    4.  Machine Descriptions
737    
738        a. The precedence parser was slightly broken when parsing infixr symbols.
739        b. The type generalizing code had the bound variables reversed, resulting
740           in a problem during arity raising.
741        c. Various fixes in machine descriptions.
742    
743    ----------------------------------------------------------------------
744    Name: Matthias Blume
745    Date: 2000/04/03 16:05:00 JST
746    Tag: blume_main_v110p26p2_2
747    Description:
748    
749    I eliminated coreEnv from compInfo.  Access to the "Core" structure is
750    now done via the ordinary static environment that is context to each
751    compilation unit.
752    
753    To this end, I arranged that instead of "structure Core" as "structure
754    _Core" is bound in the pervasive environment.  Core access is done via
755    _Core (which can never be accidentally rebound because _Core is not a
756    legal surface-syntax symbol).
757    
758    The current solution is much cleaner because the core environment is
759    now simply part of the pervasive environment which is part of every
760    compilation unit's context anyway.  In particular, this eliminates all
761    special-case handling that was necessary until now in order to deal
762    with dynamic and symbolic parts of the core environment.
763    
764    Remaining hackery (to bind the "magic" symbol _Core) is localized in the
765    compilation manager's bootstrap compiler (actually: in the "init group"
766    handling).  See the comments in src/system/smlnj/init/init.cmi for
767    more details.
768    
769    I also tried to track down all mentions of "Core" (as string argument
770    to Symbol.strSymbol) in the compiler and replaced them with a
771    reference to the new CoreSym.coreSym.  Seems cleaner since the actual
772    name appears in one place only.
773    
774    Binfile and bootfile format have not changed, but the switchover from
775    the old "init.cmi" to the new one is a bit tricky, so I supplied new
776    bootfiles anyway.
777    
778    ----------------------------------------------------------------------
779    Name: Allen Leung
780    Date: 2000/04/02 21:17:00 EST
781    Tag: leunga-20000402-mltree
782    Description:
783    
784       1. Renamed the constructor CALL in MLTREE by popular demand.
785       2. Added a bunch of files from my repository.  These are currently
786          used by other non-SMLNJ backends.
787    
788    ----------------------------------------------------------------------
789    Name: Allen Leung
790    Date: 2000/03/31 21:15:00 EST
791    Tag: leunga-20000331-aliasing
792    Description:
793    
794    This update contains a rewritten (and hopefully more correct) module
795    for extracting aliasing information from CPS.
796    
797       To turn on this feature:
798    
799            Compiler.Control.CG.memDisambiguate := true
800    
801       To pretty print the region information with assembly
802    
803           Compiler.Control.MLRISC.getFlag "asm-show-region" := true;
804    
805       To control how many levels of aliasing information are printed, use:
806    
807           Compiler.Control.MLRISC.getInt "points-to-show-level" := n
808    
809       The default of n is 3.
810    
811    ----------------------------------------------------------------------
812    Name: David MacQueen
813    Date: 2000/03/31 11:15:00 EST
814    Tag: dbm-20000331-runtime_fix
815    Description:
816    
817    This update contains:
818    
819    1. runtime/c-lib/c-libraries.c
820       includes added in revision 1.2 caused compilation errors on hppa-hpux
821    
822    2. fix for bug 1556
823       system/Basis/Implementation/NJ/internal-signals.sml
824    
825    ----------------------------------------------------------------------
826    Name: Matthias Blume
827    Date: 2000/03/31 18:00:00 JST
828    Tag: blume_main_v110p26p2_1
829    Description:
830    
831    This update contains:
832    
833    1. A small change to CM's handling of stable libraries:
834       CM now maintains one "global" modmap that is used for all stable
835       libraries.  The use of such a global modmap maximizes sharing and
836       minimizes the need for re-traversing parts of environments during
837       modmap construction.  (However, this has minor impact since modmap
838       construction seems to account for just one percent or less of total
839       compile time.)
840    
841    2. I added a "genmap" phase to the statistics.  This is where I got the
842       "one percent" number (see above).
843    
844    3. CM's new tool parameter mechanism just became _even_ better. :)
845       - The parser understands named parameters and recursive options.
846       - The "make" and "shell" tools use these new features.
847         (This makes it a lot easier to cascade these tools.)
848       - There is a small syntax change: named parameters use a
849    
850           <name> : ( <option> ... )            or
851           <name> : <string>
852    
853         syntax.  Previously, named parameters were implemented in an
854         ad-hoc fashion by each tool individually (by parsing strings)
855         and had the form
856    
857           <name>=<string>
858    
859       See the CM manual for a full description of these issues.
860    
861    ----------------------------------------------------------------------
862    Name: Matthias Blume
863    Date: 2000/03/30 18:00:00 JST
864    Tag: blume_main_v110p26p2_0
865    Description:
866    
867    !!!!! WARNING !!!!!!
868    !!  New binfiles  !!
869    !!!!!!!!!!!!!!!!!!!!
870    
871    This update contains:
872    
873    1. Moderate changes to CM:
874    
875       - Changes to CM's tools mechanism.  In particular, it is now possible
876       to have tools that accept additional "command line" parameters
877       (specified in the .cm file at each instance where the tool's class is
878       used).
879    
880       This was done to accommodate the new "make" and "shell" tools which
881       facilitate fairly seamless hookup to portions of code managed using
882       Makefiles or Shell scripts.
883    
884       There are no classes "shared" or "private" anymore.  Instead, the
885       sharing annotation is now a parameter to the "sml" class.
886    
887       There is a bit of generic machinery for implementing one's own
888       tools that accept command-line parameters.  However, I am not yet fully
889       satisfied with that part, so expect changes here in the future.
890    
891       All existing tools are described in the CM manual.
892    
893       - Slightly better error handling.  (CM now suppresses many followup
894       error messages that tended to be more annoying than helpful.)
895    
896    2. Major changes to the compiler's static environment data structures.
897    
898       - no CMStaticEnv anymore.
899            - no CMEnv, no "BareEnvironment" (actually, _only_ BareEnvironment,
900              but it is called Environment), no conversions between different
901              kinds of static environments
902    
903       - There is still a notion of a "modmap", but such modmaps are generated
904         on demand at the time when they are needed.  This sounds slow, but I
905         sped up the code that generates modmaps enough for this not to lead to
906         a slowdown of the compiler (at least I didn't detect any).
907    
908       - To facilitate rapid modmap generation, static environments now
909         contain an (optional) "modtree" structure.  Modtree annotations are
910         constructed by the unpickler during unpickling.  (This means that
911         the elaborator does not have to worry about modtrees at all.)
912         Modtrees have the advantage that they are compositional in the same
913         way as the environment data structure itself is compositional.
914         As a result, modtrees never hang on to parts of an environment that
915         has already been rendered "stale" by filtering or rebinding.
916    
917       - I went through many, many trials and errors before arriving at the
918         current solution.  (The initial idea of "linkpaths" did not work.)
919         But the result of all this is that I have touched a lot of files that
920         depend on the "modules" and "types" data structures (most of the
921         elaborator). There were a lot of changes during my "linkpath" trials
922         that could have been reverted to their original state but weren't.
923         Please, don't be too harsh on me for messing with this code a bit more
924         than what was strictly necessary...  (I _did_ resist the tempation
925         of doing any "global reformatting" to avoid an untimely death at
926         Dave's hands. :)
927    
928       - One positive aspect of the previous point:  At least I made sure that
929         all files that I touched now compile without warnings (other than
930         "polyEqual").
931    
932       - compiler now tends to run "leaner" (i.e., ties up less memory in
933         redundant modmaps)
934    
935    ----------------------------------------------------------------------
936    Name: Allen Leung
937    Date: 2000/03/29 18:00:00
938    Tag: leunga-20000327-mlriscGen_hppa_alpha_x86
939    Boot files (optional): ftp://react-ilp.cs.nyu.edu/leunga/110.26.1-sml.boot.x86-unix-20000330.tar.gz
940    Description:
941    
942       This update contains *MAJOR* changes to the way code is generated from CPS
943    in the module mlriscGen, and in various backend modules.
944    
945    CHANGES
946    =======
947    
948    1. MLRiscGen: forward propagation fix.
949    
950       There was a bug in forward propagation introduced at about the same time
951       as the MLRISC x86 backend, which prohibits coalescing to be
952       performed effectively in loops.
953    
954       Effect: speed up of loops in RISC architectures.
955               By itself, this actually slowed down certain benchmarks on the x86.
956    
957    2. MLRiscGen:  forward propagating addresses from consing.
958    
959       I've changed the way consing code is generated.  Basically I separated
960       out the initialization part:
961    
962            store tag,   offset(allocptr)
963            store elem1, offset+4(allocptr)
964            store elem2, offset+8(allocptr)
965            ...
966            store elemn, offset+4n(allocptr)
967    
968       and the address computation part:
969    
970            celladdr <- offset+4+alloctpr
971    
972       and move the address computation part
973    
974       Effect:  register pressure is generally lower as a result.  This
975                makes compilation of certain expressions much faster, such as
976                long lists with non-trivial elements.
977    
978                 [(0,0), (0,0), .... (0,0)]
979    
980    3. MLRiscGen: base pointer elimination.
981    
982        As part of the linkage mechanism, we generate the sequence:
983    
984         L:  ...  <- start of the code fragment
985    
986         L1:
987             base pointer <- linkreg - L1 + L
988    
989         The base pointer was then used for computing relocatable addresses
990       in the code fragment.  Frequently (such as in lots of continuations)
991       this is not needed.  We now eliminate this sequence whenever possible.
992    
993         For compile time efficiency, I'm using a very stupid local heuristic.
994       But in general, this should be done as a control flow analysis.
995    
996       Effect:  Smaller code size.  Speed up of most programs.
997    
998    4. Hppa back end
999    
1000         Long jumps in span dependence resolution used to depend on the existence
1001      of the base pointer.
1002    
1003         A jump to a long label L was expanded into the following sequence:
1004    
1005          LDIL %hi(L-8192), %r29
1006          LDO  %lo(L-8192)(%r29), %r29
1007          ADD  %r29, baseptr, %r29
1008          BV,n %r0(%r29)
1009    
1010         In the presence of change (3) above, this will not work.  I've changed
1011       it so that the following sequence of instructions are generated, which
1012       doesn't mention the base pointer at all:
1013    
1014             BL,n  L', %r29           /* branch and link, L' + 4 -> %r29 */
1015        L':  ADDIL L-(L'+4), %r29     /* Compute address of L */
1016             BV,n  %r0(%r29)          /* Jump */
1017    
1018    5. Alpha back end
1019    
1020          New alpha instructions LDB/LDW have been added, as per Fermin's
1021       suggestions.   This is unrelated to all other changes.
1022    
1023    6. X86 back end
1024    
1025         I've changed andl to testl in the floating point test sequence
1026         whenever appropriate.  The Intel optimization guide states that
1027         testl is preferable to andl.
1028    
1029    7. RA (x86 only)
1030    
1031         I've improved the spill propagation algorithm, using an approximation
1032       of maximal weighted independent sets.   This seems to be necessary to
1033       alleviate the negative effect in light of the slow down in (1).
1034    
1035         I'll write down the algorithm one of these days.
1036    
1037    8. MLRiscGen: frequencies
1038    
1039         I've added an annotation that states that all call gc blocks have zero
1040       execution frequencies.  This improves register allocation on the x86.
1041    
1042    BENCHMARKS
1043    ==========
1044    
1045       I've only perform the comparison on 110.25.
1046    
1047       The platforms are:
1048    
1049        HPPA  A four processor HP machine (E9000) with 5G of memory.
1050        X86   A 300Hhz Pentium II with 128M of memory, and
1051        SPARC An Ultra sparc 2 with 512M of memory.
1052    
1053       I used the following parameters for the SML benchmarks:
1054    
1055                 @SMLalloc
1056         HPPA    256k
1057         SPARC   512k
1058         X86     256k
1059    
1060    COMPILATION TIME
1061    ----------------
1062       Here are the numbers comparing the compilation times of the compilers.
1063       I've only compared 110.25 compiling the new sources versus
1064       a fixpoint version of the new compiler compiling the same.
1065    
1066                     110.25                                  New
1067               Total  Time in RA  Spill+Reload   Total  Time In RA Spill+Reload
1068         HPPA   627s    116s        2684+3584     599s    95s       1003+1879
1069         SPARC  892s    173s        2891+3870     708s    116s      1004+1880
1070         X86    999s    315s       94006+130691   987s    296s    108877+141957
1071    
1072                   110.25         New
1073                Code Size      Code Size
1074         HPPA   8596736         8561421
1075         SPARC  8974299         8785143
1076         X86    9029180         8716783
1077    
1078       So in summary, things are at least as good as before.   Dramatic
1079       reduction in compilation is obtained on the Sparc; I can't explain it,
1080       but it is reproducible.  Perhaps someone should try to reproduce this
1081       on their own machines.
1082    
1083    SML BENCHMARKS
1084    --------------
1085    
1086        On the average, all benchmarks perform at least as well as before.
1087    
1088          HPPA         Compilation Time     Spill+Reload      Run Time
1089                     110.25  New            110.25    New   110.25  New
1090    
1091          barnesHut  3.158  3.015  4.75%    1+1       0+0   2.980  2.922   2.00%
1092              boyer  6.152  5.708  7.77%    0+0       0+0   0.218  0.213   2.34%
1093       count-graphs  1.168  1.120  4.32%    0+0       0+0  22.705 23.073  -1.60%
1094                fft  0.877  0.792 10.74%    1+3       1+3   0.602  0.587   2.56%
1095        knuthBendix  3.180  2.857 11.32%    0+0       0+0   0.675  0.662   2.02%
1096             lexgen  6.190  5.290 17.01%    0+0       0+0   0.913  0.788  15.86%
1097               life  0.803  0.703 14.22%   25+25      0+0   0.153  0.140   9.52%
1098              logic  2.048  2.007  2.08%    6+6       1+1   4.133  4.008   3.12%
1099         mandelbrot  0.077  0.080 -4.17%    0+0       0+0   0.765  0.712   7.49%
1100             mlyacc 22.932 20.937  9.53%  154+181    32+57  0.468  0.430   8.91%
1101            nucleic  5.183  5.060  2.44%    2+2       0+0   0.125  0.120   4.17%
1102      ratio-regions  3.357  3.142  6.84%    0+0       0+0  116.225 113.173 2.70%
1103                ray  1.283  1.290 -0.52%    0+0       0+0   2.887  2.855   1.11%
1104             simple  6.307  6.032  4.56%   28+30      5+7   3.705  3.658   1.28%
1105                tsp  0.888  0.862  3.09%    0+0       0+0   7.040  6.893   2.13%
1106               vliw 24.378 23.455  3.94%  106+127    25+45  2.758  2.707   1.91%
1107      --------------------------------------------------------------------------
1108       Average                     6.12%                                   4.09%
1109    
1110          SPARC        Compilation Time     Spill+Reload      Run Time
1111                     110.25  New            110.25    New   110.25  New
1112    
1113          barnesHut  3.778  3.592  5.20%    2+2       0+0   3.648  3.453    5.65%
1114              boyer  6.632  6.110  8.54%    0+0       0+0   0.258  0.242    6.90%
1115       count-graphs  1.435  1.325  8.30%    0+0       0+0  33.672 34.737   -3.07%
1116                fft  0.980  0.940  4.26%    3+9       2+6   0.838  0.827    1.41%
1117        knuthBendix  3.590  3.138 14.39%    0+0       0+0   0.962  0.967   -0.52%
1118             lexgen  6.593  6.072  8.59%    1+1       0+0   1.077  1.078   -0.15%
1119               life  0.972  0.868 11.90%   26+26      0+0   0.143  0.140    2.38%
1120              logic  2.525  2.387  5.80%    7+7       1+1   5.625  5.158    9.05%
1121         mandelbrot  0.090  0.093 -3.57%    0+0       0+0   0.855  0.728   17.39%
1122             mlyacc 26.732 23.827 12.19%  162+189    32+57  0.550  0.560   -1.79%
1123            nucleic  6.233  6.197  0.59%    3+3       0+0   0.163  0.173   -5.77%
1124      ratio-regions  3.780  3.507  7.79%    0+0       0+0 133.993 131.035   2.26%
1125                ray  1.595  1.550  2.90%    1+1       0+0   3.440  3.418    0.63%
1126             simple  6.972  6.487  7.48%   29+32      5+7   3.523  3.525   -0.05%
1127                tsp  1.115  1.063  4.86%    0+0       0+0   7.393  7.265    1.77%
1128               vliw 27.765 24.818 11.87%  110+135    25+45  2.265  2.135    6.09%
1129      ----------------------------------------------------------------------------
1130       Average                     6.94%                                    2.64%
1131    
1132          X86          Compilation Time     Spill+Reload      Run Time
1133                     110.25  New            110.25    New   110.25  New
1134    
1135          barnesHut  5.530  5.420  2.03%  593+893   597+915   3.532  3.440   2.66%
1136              boyer  8.768  7.747 13.19%  493+199   301+289   0.327  0.297  10.11%
1137       count-graphs  2.040  2.010  1.49%  298+394   315+457  26.578 28.660  -7.26%
1138                fft  1.327  1.302  1.92%  112+209   115+210   1.055  0.962   9.71%
1139        knuthBendix  5.218  5.475 -4.69%  451+598   510+650   0.928  0.932  -0.36%
1140             lexgen  9.970  9.623  3.60% 1014+841  1157+885   0.947  0.928   1.97%
1141               life  1.183  1.183  0.00%  162+182   145+148   0.127  0.103  22.58%
1142              logic  3.285  3.512 -6.45%  514+684   591+836   5.682  5.577   1.88%
1143         mandelbrot  0.147  0.143  2.33%   38+41     33+54    0.703  0.690   1.93%
1144             mlyacc 35.457 32.763  8.22% 3496+4564 3611+4860  0.552  0.550   0.30%
1145            nucleic  7.100  6.888  3.07%  239+168   201+158   0.175  0.173   0.96%
1146      ratio-regions  6.388  6.843 -6.65% 1182+257   981+300  120.142 120.345 -0.17%
1147                ray  2.332  2.338 -0.29%  346+398   402+494   3.593  3.540   1.51%
1148             simple  9.912  9.903  0.08% 1475+941  1579+1168  3.057  3.178  -3.83%
1149                tsp  1.623  1.532  5.98%  266+200   250+211   8.045  7.878   2.12%
1150               vliw 33.947 35.470 -4.29% 2629+2774 2877+3171  2.072  1.890   9.61%
1151      ----------------------------------------------------------------------------
1152       Average                     1.22%                                     3.36%
1153    
1154    ----------------------------------------------------------------------
1155    Name: Allen Leung
1156    Date: 2000/03/23 16:25:00
1157    Tag: leunga-20000323-fix_x86_alpha
1158    Description:
1159    
1160    1. X86 fixes/changes
1161    
1162       a.  The old code generated for SETcc was completely wrong.
1163           The Intel optimization guide is VERY misleading.
1164    
1165    2. ALPHA fixes/changes
1166    
1167       a.  Added the instructions LDBU, LDWU, STB, STW as per Fermin's suggestion.
1168       b.  Added a new mode byteWordLoadStores to the functor parameter to Alpha()
1169       c.  Added reassociation code for address computation.
1170    
1171    ----------------------------------------------------------------------
1172    Name: Allen Leung
1173    Date: 2000/03/22 01:23:00
1174    Tag: leunga-20000322-fix_x86_hppa_ra
1175    Description:
1176    
1177    1. X86 fixes/changes
1178    
1179       a.  x86Rewrite bug with MUL3 (found by Lal)
1180       b.  Added the instructions FSTS, FSTL
1181    
1182    2. PA-RISC fixes/changes
1183    
1184       a.  B label should not be a delay slot candidate!  Why did this work?
1185       b.  ADDT(32, REG(32, r), LI n) now generates one instruction instead of two,
1186           as it should be.
1187       c.  The assembly syntax for fstds and fstdd was wrong.
1188       d.  Added the composite instruction COMICLR/LDO, which is the immediate
1189           operand variant of COMCLR/LDO.
1190    
1191    3. Generic MLRISC
1192    
1193       a.  shuffle.sml rewritten to be slightly more efficient
1194       b.  DIV bug in mltree-simplify fixed (found by Fermin)
1195    
1196    4. Register Allocator
1197    
1198       a.  I now release the interference graph earlier during spilling.
1199           May improve memory usage.
1200    
1201    ----------------------------------------------------------------------
1202    Name: Matthias Blume
1203    Date: 2000/03/14 14:15:32
1204    Tag: blume_main_v110p26p1_2
1205    Description:
1206    
1207    1. Tools.registerStdShellCmdTool (from smlnj/cm/tool.cm) takes an
1208    additional argument called "template" which is an optional string that
1209    specifies the layout of the tool command line.  See the CM manual for
1210    explanation.
1211    
1212    2. A special-purpose tool can be "registered" by simply dropping the
1213    corresponding <...>-tool.cm (and/or <...>-ext.cm) into the same
1214    directory where the .cm file lives that uses this tool.  (The
1215    behavior/misfeature until now was to look for the tool description
1216    files in the current working directory.)  As before, tool description
1217    files could also be anchored -- in which case they can live anywhere
1218    they like.  Following the recent e-mail discussion, this change should
1219    make it easier to have special-purpose tools that are shipped together
1220    with the sources of the program that uses them.
1221    
1222    ----------------------------------------------------------------------
1223    Name: Matthias Blume
1224    Date: 2000/03/10 07:48:34
1225    Tag: blume_main_v110p26p1_1
1226    Description:
1227    
1228    I added a re-written version of Dave's fixpt script to src/system.
1229    Changes relative to the original version:
1230      - sh-ified (not everybody has ksh)
1231      - automatically figures out which architecture it runs on
1232      - uses ./makeml a bit more cleverly
1233      - never invokes ./installml (and, thus, does not clobber your
1234        good and working installation of sml in case something goes wrong)
1235      - accepts max iteration count using option "-iter <n>"
1236      - accepts a "base" name using option "-base <base>"
1237    
1238    It does not build any extraneous heap images but directly rebuilds
1239    bin- and boot-hierarchies using makeml's "-rebuild" switch. Finally,
1240    it can incorporate existing bin- and boot- hierarchies.  For example,
1241    suppose the base is set to "sml" (which is the default).  Then it
1242    successively builds
1243    
1244            sml.bin.<arch>-unix and sml.boot.<arch>-unix
1245    then    sml1.bin.<arch>-unix and sml1.boot.<arch>-unix
1246    then    sml2.bin.<arch>-unix and sml2.boot.<arch>-unix
1247    ...
1248    then    sml<n>.bin.<arch>-unix and sml<n>.boot.<arch>-unix
1249    
1250    and so on.  If any of these already exist, it will just use what's
1251    there.  In particular, many people will have the initial set of bin
1252    and boot files around, so this saves time for at least one full
1253    rebuild.  Having sets of the form <base><k>.{bin,boot}.<arch>-unix for
1254    <k>=1,2,... is normally not a good idea when invoking fixpt.  However,
1255    they might be the result of an earlier partial run of fixpt (which
1256    perhaps got accidentally killed).  In this case, fixpt will quickly
1257    move through what exists before continuing where it left off earlier,
1258    and, thus, saves a lot of time.
1259    
1260    ----------------------------------------------------------------------
1261    Name: Allen Leung
1262    Date: 00/03/10 02:20:00
1263    Tag: leunga-20000310-fix_x86_asm_ra
1264    Description:
1265    
1266    More assembly output problems involving the indexed addressing mode
1267    on the x86 have been found and corrected. Thanks to Fermin Reig for the
1268    fix.
1269    
1270    The interface and implementation of the register allocator have been changed
1271    slightly to accommodate the possibility to skip the register allocation
1272    phases completely and go directly to memory allocation.  This is needed
1273    for C-- use.
1274    
1275    ----------------------------------------------------------------------
1276    Name: Matthias Blume
1277    Date: 00/03/09 10:23:53
1278    Tag: blume_main_v110p26p1_0
1279    Description:
1280    
1281    * Complete re-organization of library names.  Many libraries have been
1282    consolidated so that they share the same path anchor.  For example,
1283    all MLRISC-related libraries are anchored at MLRISC, most libraries that
1284    are SML/NJ-specific are under "smlnj".  Notice that names like
1285    host-cmb.cm or host-compiler.cm no longer exist.  See system/README
1286    for a complete description of the new naming scheme.  Quick reference:
1287    
1288       host-cmb.cm        -> smlnj/cmb.cm
1289       host-compiler.cm   -> smlnj/compiler.cm
1290       full-cm.cm         -> smlnj/cm.cm
1291       <arch>-<os>.cm     -> smlnj/cmb/<arch>-<os>.cm
1292       <arch>-compiler.cm -> smlnj/compiler/<arch>.cm
1293    
1294    * Bug fixes in CM.
1295        - exceptions in user code are being passed through (i.e., reach top level)
1296        - more bugs in paranoia mode fixed
1297        - bug related to checking group owners fixed
1298    
1299    * New install.sh script that automagically fetches archive files:
1300      The new file config/srcarchiveurl must contain the URL of the
1301      (remote) directory that contains bin files (or other source archives).
1302      If install.sh does not find the archive locally, it tries to get
1303      it from that remote directory.
1304      This should simplify installation further:  For machines that have
1305      access to the internet, just fetch <version>-config.tgz, unpack it,
1306      edit config/targets, and go (run config/install.sh).  The script will
1307      fetch everything else that it might need all by itself.
1308    
1309      For CVS users, this mechanism is not relevant for source archives, but
1310      it is convenient for getting new sets of binfiles.
1311    
1312      Archives should be tar files compressed with either gzip, compress, or
1313      bzip2.  The script recognizes .tgz, .tar, tar.gz, tz, .tar.Z, and .tar.bz2.
1314    
1315  ----------------------------------------------------------------------  ----------------------------------------------------------------------
1316  Name: Matthias Blume  Name: Matthias Blume

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