Home My Page Projects Code Snippets Project Openings SML/NJ
Summary Activity Forums Tracker Lists Tasks Docs Surveys News SCM Files

SCM Repository

[smlnj] Diff of /sml/trunk/HISTORY
ViewVC logotype

Diff of /sml/trunk/HISTORY

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 844, Wed Jun 20 20:39:15 2001 UTC revision 1055, Thu Feb 7 20:38:59 2002 UTC
# Line 8  Line 8 
8  The form of an entry should be:  The form of an entry should be:
9    
10  Name:  Name:
11  Date:  Date: yyyy/mm/dd
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Lal George
17    Date: 2002/02/07 15:34:13 EST 2002
18    Tag: <none>
19    Description:
20    
21    Compilers that generate assembly code may produce  global labels
22    whose value is resolved at link time. The various peephole optimization
23    modules did not take this in account.
24    
25    TODO. The Labels.addrOf function should really return an option
26    type so that clients are forced to deal with this issue, rather
27    than an exception being raised.
28    
29    ----------------------------------------------------------------------
30    Name: Lal George
31    Date: 2002/02/06 13:55:02 EST
32    Tag: george-20020206-ra-breakup
33    Description:
34    
35    1. A bug fix from Allen.
36    
37        A typo causes extra fstp %st(0)'s to be generated at compensation
38        edges, which might cause stack underflow traps at runtime.  This
39        occurs in fft where there are extraneous fstps right before the 'into'
40        trap instruction (in this case they are harmless since none of the
41        integers overflow.)
42    
43    2. Pulled out various utility modules that were embedded in the modules
44       of the register allocator. I need these modules for other purposes, but
45       they are not complete enough to put into a library (just yet).
46    ----------------------------------------------------------------------
47    Name: Matthias Blume
48    Date: 2002/01/31 16:05:00 EST
49    Tag: blume-20020131-sparc-ccalls
50    Description:
51    
52    1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
53       of extra stack space by mistake.  Fixed.
54    
55    2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
56    
57    ----------------------------------------------------------------------
58    Name: Allen Leung
59    Date: 2002/01/30
60    Tag: leunga-20020130-nowhere-bug-fix
61    Description:
62    
63       MLRISC bug fixes:
64       1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
65       2. MachineInt.fromString was negating its value.
66    
67    ----------------------------------------------------------------------
68    Name: Matthias Blume
69    Date: 2002/01/29
70    Tag: blume-20020129-INSTALL
71    Description:
72    
73    - Added somewhat detailed installation instructions (file INSTALL).
74    - Fixed curl-detection bug in config/install.sh.
75    - It is now possible to select the URL getter using the URLGETTER
76      environment variable:
77    
78          not set / "unknown"      --> automatic detection (script tries wget,
79                                       curl, and lynx)
80          "wget" / "curl" / "lynx" --> use the specified program (script "knows"
81                                       how to properly invoke them)
82          other                    --> use $URLGETTER directly, it must take
83                                       precisely two command-line arguments
84                                       (source URL and destination file name)
85    
86    ----------------------------------------------------------------------
87    Name: Matthias Blume
88    Date: 2002/01/28
89    Tag: blume-20020128-sparc-ccalls
90    Description:
91    
92    - Fixed problem with calculation of "used" registers in sparc-c-calls.
93    - Make use of the allocParam argument in sparc-c-calls.
94    
95    ----------------------------------------------------------------------
96    Name: Matthias Blume
97    Date: 2002/01/28
98    Tag: blume-20020128-allocParam
99    Description:
100    
101    John Reppy:  Changes c-calls API to accept client-callback for
102    allocating extra stack space.
103    me: Corresponding changes to mlriscGen (using a dummy argument that
104        does not change the current behavior).
105    
106    ----------------------------------------------------------------------
107    Name: Matthias Blume
108    Date: 2002/01/28 12:00:00
109    Tag: Release_110_38
110    Description:
111    
112    This time for real!!!
113    
114    ----------------------------------------------------------------------
115    Name: Matthias Blume
116    Date: 2002/01/28 10:56:00 EST
117    Tag: blume-20020128-retraction
118    Description:
119    
120    0. Retracted earlier 110.38.  (The Release_110_38 tag has been replaced
121       with blume-Release_110_38-retracted.)
122    
123    1. Fixed a problem with incorrect rounding modes in real64.sml.
124       (Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
125    
126    2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
127       and enums fixed.  The naming of corresponding ML identifiers should
128       now be consistent again.
129    
130    ----------------------------------------------------------------------
131    Name: Allen Leung
132    Date: 2002/01/27
133    Tag: leunga-20020127-nowhere
134    Description:
135    
136       Added a target called nowhere in the configuration scripts.
137       Enabling this will build the MLRISC 'nowhere' tool (for translating
138       programs with where-clauses into legal SML code) during installation.
139    
140    ----------------------------------------------------------------------
141    Name: Matthias Blume
142    Date: 2002/01/25 21:27:00 EST
143    Tag: blume-Release_110_38-retracted
144    Description:
145    
146    Call it a (working) release!  Version is 110.38. Bootfiles are ready.
147    
148    README will be added later.
149    
150    !!! NOTE:  Re-tagged as blume-Release_110_38-retracted. Original tag
151    (Release_110_38) removed.  Reason: Last-minute bug fixes.
152    
153    ----------------------------------------------------------------------
154    Name: Matthias Blume
155    Date: 2002/01/25
156    Tag: blume-20020125-ffi
157    Description:
158    
159    A large number of tweaks and improvements to ml-nlffi-lib and
160    ml-nlffigen:
161    
162       - ML represenation types have been streamlined
163       - getter and setter functions work with concrete values, not abstract
164         ones where possible
165       - ml-nlffigen command line more flexible (see README file there)
166       - some bugs have been fixed (hopefully)
167    
168    ----------------------------------------------------------------------
169    Name: Lal George
170    Date: 2002/01/24
171    Tag: george-20020124-risc-ra-interface
172    Description:
173    
174       There is a dramatic simplification in the interface to the
175       register allocator for RISC architectures as a result of making
176       parallel copy instructions explicit.
177    
178    ----------------------------------------------------------------------
179    Name: Matthias Blume
180    Date: 2002/01/22
181    Tag: blume-20020122-x86-ccalls
182    Description:
183    
184    Bug fix for c-calls on x86 (having to do with how char- and
185    short-arguments are being handled).
186    
187    ----------------------------------------------------------------------
188    Name: Matthias Blume
189    Date: 2002/01/21
190    Tag: blume-20020121-ff
191    Description:
192    
193    Another day of fiddling with the FFI...
194    
195    1. Bug fix/workaround:  CKIT does not complain about negative array
196       dimensions, so ml-nlffigen has to guard itself against this possibility.
197       (Otherwise a negative dimension would send it into an infinite loop.)
198    
199    2. Some of the abstract types (light objects, light pointers, most "base"
200       types) in structure C are now eqtypes.
201    
202    3. Added constructors and test functions for NULL function pointers.
203    
204    ----------------------------------------------------------------------
205    Name: Matthias Blume
206    Date: 2002/01/18
207    Tag: blume-20020118-ready-for-new-release
208    Description:
209    
210    Made config/srcarchiveurl point to a new place.  (Will provide boot
211    files shortly.)
212    
213    Maybe we christen this to be 110.38?
214    
215    ----------------------------------------------------------------------
216    Name: Matthias Blume
217    Date: 2002/01/18
218    Tag: blume-20020118-more-ffifiddle
219    Description:
220    
221    Today's FFI fiddling:
222    
223      - Provided a structure CGetSet with "convenient" versions of C.Get.* and
224        C.Set.* that use concrete (MLRep.*) arguments and results instead
225        of abstract ones.
226    
227      - Provided word-style bit operations etc. for "int" representation
228        types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
229        and Long.
230    
231    ----------------------------------------------------------------------
232    Name: Matthias Blume
233    Date: 2002/01/18
234    Tag: blume-20020118-use-x86-fp
235    Description:
236    
237    Now that x86-fast-fp seems to be working, I turned it back on again
238    by default.  (Seems to work fine now, even with the FFI.)
239    
240    Other than that, I added some documentation about the FFI to
241    src/ml-nlffigen/README and updated the FFI test examples in
242    src/ml-nlffi-lib/Tests/*.
243    
244    ----------------------------------------------------------------------
245    Name: Allen Leung
246    Date: 2002/01/17
247    Tag: leunga-20020117-x86-fast-fp-call
248    Description:
249    
250       1. Fixed a problem with handling return fp values when x86's fast fp
251          mode is turned on.
252    
253       2. Minor pretty printing fix for cellset.  Print %st(0) as %st(0) instead
254          of %f32.
255    
256       3. Added a constructor INT32lit to the ast of MLRISC tools.
257    
258    ----------------------------------------------------------------------
259    Name: Matthias Blume
260    Date: 2002/01/16
261    Tag: blume-20020116-ffifiddle
262    Description:
263    
264    More fiddling with the FFI interface:
265    
266     - Make constness 'c instead of rw wherever possible.  This eliminates
267       the need for certain explicit coercions.  (However, due to ML's
268       value polymorphism, there will still be many cases where explicit
269       coercions are necessary.  Phantom types are not the whole answer
270       to modeling a subtyping relationship in ML.)
271    
272     - ro/rw coersions for pointers added.  (Avoids the detour through */&.)
273    
274     - "printf" test example added to src/ml-nlffi-lib/Tests.  (Demonstrates
275       clumsy workaround for varargs problem.)
276    
277    ----------------------------------------------------------------------
278    Name: Lal George
279    Date: 2002/01/15
280    Tag: <none>
281    Description:
282    
283    1. Since COPY instructions are no longer native to the architecture,
284       a generic functor can be used to implement the expandCopies function.
285    
286    2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
287       TEXT segment.
288    
289    ----------------------------------------------------------------------
290    Name: Matthias Blume
291    Date: 2002/01/15
292    Tag: blume-20020115-ffiupdates
293    Description:
294    
295    1. Fix for bug resulting in single-precision float values being returned
296       incorrectly from FFI calls.
297    
298    2. Small modifications to C FFI API:
299    
300        - memory-allocation routines return straight objects (no options)
301          and raise an exception in out-of-memory situations
302        - unsafe extensions to cast between function pointers and pointers
303          from/to ints
304        - added structure C_Debug as an alternative to structure C where
305          pointer-dereferencing (|*| and |*!) always check for null-pointers
306        - added open_lib' to DynLinkage;  open_lib' works like open_lib
307          but also takes a (possibly empty) list of existing library handles
308          that the current library depends on
309    
310    ----------------------------------------------------------------------
311    Name: Matthias Blume
312    Date: 2002/01/10
313    Tag: blume-20020110-newffigen
314    Description:
315    
316    1. Updates to portable graph code.
317    
318    2. Major update to ml-nlffigen and ml-nlffi-lib.  Things are much
319       more scalable now so that even huge interfaces such as the one
320       for GTK compile in finite time and space. :-)
321       See src/ml-nlffigen/README for details on what's new.
322    
323    ----------------------------------------------------------------------
324    Name: Lal George
325    Date: 2001/01/09 14:31:35 EST 2002
326    Tag: george-20011206-rm-native-copy
327    Description:
328    
329            Removed the native COPY and FCOPY instructions
330            from all the architectures and replaced it with the
331            explicit COPY instruction from the previous commit.
332    
333            It is now possible to simplify many of the optimizations
334            modules that manipulate copies. This has not been
335            done in this change.
336    
337    ----------------------------------------------------------------------
338    Name: Lal George
339    Date: 2001/12/06 16:50:13 EST 2001
340    Tag: george-20011206-mlrisc-instruction
341    Description:
342    
343    Changed the representation of instructions from being fully abstract
344    to being partially concrete. That is to say:
345    
346      from
347            type instruction
348    
349      to
350            type instr                              (* machine instruction *)
351    
352            datatype instruction =
353                LIVE of {regs: C.cellset, spilled: C.cellset}
354              | KILL of {regs: C.cellset, spilled: C.cellset}
355              | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
356              | ANNOTATION of {i: instruction, a: Annotations.annotation}
357              | INSTR of instr
358    
359    This makes the handling of certain special instructions that appear on
360    all architectures easier and uniform.
361    
362    LIVE and KILL say that a list of registers are live or killed at the
363    program point where they appear. No spill code is generated when an
364    element of the 'regs' field is spilled, but the register is moved to
365    the 'spilled' (which is present, more for debugging than anything else).
366    
367    LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
368    We used to generate:
369    
370            DEFFREG f1
371            f1 := f2 + f3
372            trapb
373    
374    but now generate:
375    
376            f1 := f2 + f3
377            trapb
378            LIVE {regs=[f1,f2,f3], spilled=[]}
379    
380    Furthermore, the DEFFREG (hack) required that all floating point instruction
381    use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
382    defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
383    in a cleaner alpha implementation. (Hopefully, intel will not get rid of
384    this architecture).
385    
386    COPYXXX is intended to replace the parallel COPY and FCOPY  available on
387    all the architectures. This will result in further simplification of the
388    register allocator that must be aware of them for coalescing purposes, and
389    will also simplify certain aspects of the machine description that provides
390    callbacks related to parallel copies.
391    
392    ANNOTATION should be obvious, and now INSTR represents the honest to God
393    machine instruction set!
394    
395    The <arch>/instructions/<arch>Instr.sml files define certain utility
396    functions for making porting easier -- essentially converting upper case
397    to lower case. All machine instructions (of type instr) are in upper case,
398    and the lower case form generates an MLRISC instruction. For example on
399    the alpha we have:
400    
401      datatype instr =
402         LDA of {r:cell, b:cell, d:operand}
403       | ...
404    
405      val lda : {r:cell, b:cell, d:operand} -> instruction
406        ...
407    
408    where lda is just (INSTR o LDA), etc.
409    
410    ----------------------------------------------------------------------
411    Name: Matthias Blume
412    Date: 2001/11/22 21:40:00 EST
413    Tag: Release_110_37
414    Description:
415    
416    Release 110.37.  This time for real.
417    
418    ----------------------------------------------------------------------
419    Name: Matthias Blume
420    Date: 2001/11/21 16:35:00 EST
421    Tag: blume-20011121-foot-in-mouth
422    Description:
423    
424    Removed the "Release_110_37" tag because of a serious bug.
425    This will be re-tagged once the bug is fixed.
426    
427    ----------------------------------------------------------------------
428    Name: Matthias Blume
429    Date: 2001/11/21 16:14:00 EST
430    Tag: blume-20011121-forgottenfile
431    Description:
432    
433    Forgot to add a file.  (Just a .tex-file -- part of
434    the CM manual source.)
435    
436    ----------------------------------------------------------------------
437    Name: Matthias Blume
438    Date: 2001/11/21 16:10:00 EST
439    Tag: blume-20011121-invalid_110_37
440    Description:
441    
442    Note: I removed the original tag "Release_110_37" from this commit
443          because we found a serious bug in all non-x86 backends.
444          - Matthias
445    
446    1. Modifications to the SML/NJ code generator and to the runtime system
447       so that code object name strings are directly inserted into code
448       objects at code generation time.  The only business the runtime system
449       has with this is now to read the name strings on occasions.
450       (The encoding of the name string has also changed somewhat.)
451    
452    2. CM now implements a simple "set calculus" for specifying export lists.
453       In particular, it is now possible to refer to the export lists of
454       other libraries/groups/sources and form unions as well as differences.
455       See the latest CM manual for details.
456    
457    3. An separate notion of "proxy" libraries has again be eliminated from
458       CM's model.  (Proxy libraries are now simply a special case of using
459       the export list calculus.)
460    
461    4. Some of the existing libraries now take advantage of the new set
462       calculus.
463       (Notice that not all libraries have been converted because some
464       of the existing .cm-files are supposed to be backward compatible
465       with 110.0.x.)
466    
467    5. Some cleanup in stand-alone programs.  (Don't use "exnMessage" -- use
468       "General.exnMessage"!  The former relies on a certain hook to be
469       initialized, and that often does not happen in the stand-alone case.)
470    
471    ----------------------------------------------------------------------
472    Name: Lal George
473    Date: 2001/11/21  13:56:18 EST
474    Tag: george-2001121-pseudo-ops
475    Description:
476    
477      Implemented a complete redesign of MLRISC pseudo-ops. Now there
478      ought to never be any question of incompatabilities with
479      pseudo-op syntax expected by host assemblers.
480    
481      For now, only modules supporting GAS syntax are implemented
482      but more should follow, such as MASM, and vendor assembler
483      syntax, e.g. IBM as, Sun as, etc.
484    
485    ----------------------------------------------------------------------
486    Name: Matthias Blume
487    Date: 2001/11/14 11:52:00 EST
488    Tag: blume-20011114-srcname
489    Description:
490    
491    1. Routed the name of the current source file to mlriscgen where it
492       should be directly emitted into the code object.  (This last part
493       is yet to be done.)
494    
495    2. Some cleanup of the pgraph code to make it match the proposal that
496       I put out the other day.  (The proposal notwithstanding, things are
497       still in flux here.)
498    
499    ----------------------------------------------------------------------
500    Name: Lal George
501    Date: 2001/11/14 09:44:04 EST
502    Tag:
503    Description:
504    
505      Fix for a backpatching bug reported by Allen.
506    
507      Because the boundary between short and long span-dependent
508      instructions is +/- 128, there are an astounding number of
509      span-dependent instructions whose size is over estimated.
510    
511      Allen came up with the idea of letting the size of span
512      dependent instructions be non-monotonic, for a maxIter
513      number of times, after which the size must be monotonically
514      increasing.
515    
516      This table shows the number of span-dependent instructions
517      whose size was over-estimated as a function of maxIter, for the
518      file Parse/parse/ml.grm.sml:
519    
520         maxIter            # of instructions:
521            10                      687
522            20                      438
523            30                      198
524            40                        0
525    
526      In compiling the compiler, there is no significant difference in
527      compilation speed between maxIter=10 and maxIter=40. Actually,
528      my measurements showed that maxIter=40 was a tad faster than
529      maxIter=10! Also 96% of the  files in the compiler reach a fix
530      point within 13 iterations, so fixing maxIter at 40, while high,
531      is okay.
532    
533    ----------------------------------------------------------------------
534    Name: Matthias Blume
535    Date: 2001/10/31 15:25:00 EST
536    Tag: blume-20011031-pgraph
537    Description:
538    
539    CKIT:
540    * Changed the "Function" constructor of type Ast.ctype to carry optional
541      argument identifiers.
542    * Changed the return type of TypeUtil.getFunction accordingly.
543    * Type equality ignores the argument names.
544    * TypeUtil.composite tries to preserve argument names but gives up quickly
545      if there is a mismatch.
546    
547    installation script:
548    * attempts to use "curl" if available (unless "wget" is available as well)
549    
550    CM:
551    * has an experimental implementation of "portable graphs" which I will
552      soon propose as an implementation-independent library format
553    * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
554    
555    NLFFI-LIB:
556    * some cleanup (all cosmetic)
557    
558    NLFFIGEN:
559    * temporarily disabled the mechanism that suppresses ML output for
560      C definitions whose identifiers start with an underscore character
561    * generate val bindings for enum constants
562    * user can request that only one style (light or heavy) is being used;
563      default is to use both (command-line arguments: -heavy and -light)
564    * fixed bug in handling of function types involving incomplete pointers
565    * generate ML entry points that take record arguments (i.e., using
566      named arguments) for C functions that have a prototype with named
567      arguments
568      (see changes to CKIT)
569    
570    ----------------------------------------------------------------------
571    Name: Allen Leung
572    Date: 2001/10/27 20:34:00 EDT
573    Tag: leunga-20011027-x86-fast-fp-call
574    Description:
575    
576       Fixed the bug described in blume-20010920-slowfp.
577    
578       The fix involves
579          1. generating FCOPYs in FSTP in ia32-svid
580          2. marking a CALL with the appropriate annotation
581    
582    ----------------------------------------------------------------------
583    Name: Matthias Blume
584    Date: 2001/10/16 11:32:00 EDT
585    Tag: blume-20011016-netbsd
586    Description:
587    
588    Underscore patch from Chris Richards (fixing problem with compiling
589    runtime system under recent NetBSD).
590    
591    ----------------------------------------------------------------------
592    Name: Allen Leung
593    Date: 2001/10/12 17:18:32 EDT 2001
594    Tag: leung-20011012-x86-printflowgraph
595    Description:
596    
597    X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
598    
599    ----------------------------------------------------------------------
600    Name: Lal George
601    Date: 2001/10/11 23:51:34 EDT
602    Tag: george-20011011-too-many-instrs
603    Description:
604    
605    The representation of a program point never expected to see more
606    than 65536 instructions in a basic block!
607    
608    ----------------------------------------------------------------------
609    Name: Lal George
610    Date: 2001/10/09 09:41:37 EDT
611    Tag: george-20011008-mlrisc-labels
612    Description:
613    
614    Changed the machine description files to support printing of
615    local and global labels in assembly code, based on host assembler
616    conventions.
617    
618    ----------------------------------------------------------------------
619    Name: Matthias Blume
620    Date: 2001/09/25 15:25:00 EDT
621    Tag: blume-20010925-exninfo
622    Description:
623    
624    I provided a non-hook implementation of exnName (at the toplevel) and
625    made the "dummy" implementation of exnMessage (at the toplevel) more
626    useful: if nothing gets "hooked in", then at least you are going to
627    see the exception name and a message indicating why you don't see more.
628    
629    [For the time being, programs that need exnMessage and want to use
630    ml-build should either use General.exnMessage (strongly recommended) or
631    refer to structure General at some other point so that CM sees a
632    static dependency.]
633    
634    [Similar remarks go for "print" and "use":  If you want to use their
635    functionality in stand-alone programs generated by ml-build, then use
636    TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
637    
638    ----------------------------------------------------------------------
639    Name: Matthias Blume
640    Date: 2001/09/20 17:28:00 EDT
641    Tag: blume-20010920-slowfp
642    Description:
643    
644    Allen says that x86-fast-fp is not safe yet, so I turned it off again...
645    
646    ----------------------------------------------------------------------
647    Name: Matthias Blume
648    Date: 2001/09/20 17:20:00 EDT
649    Tag: blume-20010920-canonicalpaths
650    Description:
651    
652    0. Updated the BOOT file (something that I forgot to do earlier).
653    
654    1. Small internal change to CM so that it avoids "/../" in filenames
655       as much as possible (but only where it is safe).
656    
657    2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
658       that arguments that contain delimiters are passed through correctly.
659       This change also means that all "special" arguments of the form
660       @SMLxxx... must come first.
661    
662    3. Changed install script to put relative anchor names for tool commands
663       into pathconfig.
664    
665    ----------------------------------------------------------------------
666    Name: Matthias Blume
667    Date: 2001/09/18 15:35:00 EDT
668    Tag: blume-20010918-readme11036
669    Description:
670    
671    Added README files.
672    
673    ----------------------------------------------------------------------
674    Name: Matthias Blume
675    Date: 2001/09/18 11:45:00 EDT
676    Tag: Release_110_36 (retag)
677    Description:
678    
679    Fixed mistake in config/preloads. Retagged as 110.36.
680    
681    ----------------------------------------------------------------------
682    Name: Matthias Blume
683    Date: 2001/09/18 09:40:00 EDT
684    Tag: Release_110_36_orig (tag changed)
685    Description:
686    
687    New version (110.36).  New bootfiles.
688    
689    ----------------------------------------------------------------------
690    Name: Matthias Blume
691    Date: 2001/09/14 16:15:00 EDT
692    Tag: blume-20010914-x86fastfp
693    Description:
694    
695    John committed some changes that Allen made, in particular a (hopefully)
696    correctly working version of the x86-fp module.
697    
698    I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
699    flag to "true".  Everything seems to compile to a fixpoint ok, and
700    "mandelbrot" speeds up by about 15%.
701    
702    ----------------------------------------------------------------------
703    Name: Matthias Blume
704    Date: 2001/09/13 11:20:00 EDT
705    Tag: blume-20010913-minimal
706    Description:
707    
708    1. Stefan Monnier's patch to fix a miscompilation problem that
709       was brought to light by John Reppy's work on Moby.
710    
711    2. Implemented a minimal "structure Compiler" that contains just
712       "version" and "architecture".  The minimal version will be
713       available when the full version is not.  This is for backward-
714       compatibility with code that wants to test Compiler.version.
715    
716    ----------------------------------------------------------------------
717    Name: Matthias Blume
718    Date: 2001/08/28 14:03:00 EDT
719    Tag: blume-20010828-ml-lex
720    Description:
721    
722    Fix for bug 1581, received from Neophytos Michael.
723    
724    ----------------------------------------------------------------------
725    Name: Matthias Blume
726    Date: 2001/08/27 11:20:00 EDT
727    Tag: blume-20010827-readme11035
728    Description:
729    
730    Fleshed out the README file for 110.35.
731    
732    ----------------------------------------------------------------------
733    Name: Matthias Blume
734    Date: 2001/08/24 17:10:00 EDT
735    Tag: Release_110_35
736    Description:
737    
738    New version number (110.35).  New bootfiles.
739    
740    ----------------------------------------------------------------------
741    Name: Lal George
742    Date: 2001/08/24 13:47:18 EDT 2001
743    Tag: george-20010824-MLRISC-graphs
744    Description:
745    
746     removed clusters from MLRISC completely and replaced with graphs.
747    
748    ----------------------------------------------------------------------
749    Name: Matthias Blume
750    Date: 2001/08/23 17:50:00 EDT
751    Tag: blume-20010823-toplevel
752    Description:
753    
754    - some reorganization of the code that implements various kinds of
755      environments in the compiler (static, dynamic, symbolic, combined)
756    - re-implemented the EnvRef module so that evalStream works properly
757      (if the stream contains references to "use", "CM.make", etc.)
758    - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
759    
760    ----------------------------------------------------------------------
761    Name: Matthias Blume
762    Date: 2001/08/20 15:50 EDT
763    Tag: blume20010820-slipup
764    Description:
765    
766    I forgot to commit a few files.  Here they are...
767    
768    ----------------------------------------------------------------------
769    Name: Matthias Blume
770    Date: 2001/08/20 15:35:00 EDT
771    Tag: blume-20010820-debugprof
772    Description:
773    
774    !!!! NEW BOOTFILES !!!!
775    
776    This is another round of reorganizing the compiler sources.  This
777    time the main goal was to factor out all the "instrumentation"
778    passes (for profiling and backtracing) into their own library.
779    The difficulty was to do it in such a way that it does not depend
780    on elaborate.cm but only on elabdata.cm.
781    
782    Therefore there have been further changes to both elaborate.cm and
783    elabdata.cm -- more "generic" things have been moved from the former
784    to the latter.  As a result, I was forced to split the assignment
785    of numbers indicating "primtyc"s into two portions: SML-generic and
786    SML/NJ-specific.  Since it would have been awkward to maintain,
787    I bit the bullet and actually _changed_ the mapping between these
788    numbers and primtycs.  The bottom line of this is that you need
789    a new set of bin- and bootfiles.
790    
791    I have built new bootfiles for all architectures, so doing a fresh
792    checkout and config/install.sh should be all you need.
793    
794    The newly created library's name is
795    
796        $smlnj/viscomp/debugprof.cm
797    
798    and its sources live under
799    
800        src/compiler/DebugProf
801    
802    ----------------------------------------------------------------------
803    Name: Matthias Blume
804    Date: 2001/08/15 17:15:00 EDT
805    Tag: blume-20010815-compreorg
806    Description:
807    
808    This is a first cut at reorganizing the CM libraries that make up the
809    core of the compiler.  The idea is to separate out pieces that could
810    be used independently by tools, e.g., the parser, the typechecker, etc.
811    
812    The current status is a step in this direction, but it is not quite
813    satisfactory yet.  Expect more changes in the future.
814    
815    Here is the current (new) organization...
816    
817        What used to be $smlnj/viscomp/core.cm is now divided into
818        six CM libraries:
819    
820             $smlnj/viscomp/basics.cm
821                           /parser.cm
822                           /elabdata.cm
823                           /elaborate.cm
824                           /execute.cm
825                           /core.cm
826    
827        The CM files for these libraries live under src/system/smlnj/viscomp.
828        All these libraries are proxy libraries that contain precisely
829        one CM library component.  Here are the locations of the components
830        (all within the src/compiler tree):
831    
832             Basics/basics.cm
833             Parse/parser.cm
834             ElabData/elabdata.cm
835             Elaborator/elaborate.cm
836             Execution/execute.cm
837             core.cm
838    
839         [This organization is the same that has been used already
840         for a while for the architecture-specific parts of the visible
841         compiler and for the old version of core.cm.]
842    
843         As you will notice, many source files have been moved from their
844         respective original locations to a new home in one of the above
845         subtrees.
846    
847         The division of labor between the new libraries is the following:
848    
849             basics.cm:
850                - Simple, basic definitions that pertain to many (or all) of
851                  the other libraries.
852             parser.cm:
853                - The SML parser, producing output of type Ast.dec.
854                - The type family for Ast is also defined and exported here.
855             elabdata.cm:
856                - The datatypes that describe input and output of the elaborator.
857                  This includes types, absyn, and static environments.
858             elaborator.cm:
859                - The SML/NJ type checker and elaborator.
860                  This maps an Ast.dec (with a given static environment) to
861                  an Absyn.dec (with a new static environment).
862                - This libraries implements certain modules that used to be
863                  structures as functors (to remove dependencies on FLINT).
864             execute.cm:
865                - Everything having to do with executing binary code objects.
866                - Dynamic environments.
867             core.cm:
868                - SML/NJ-specific instantiations of the elaborator and MLRISC.
869                - Top-level modules.
870                - FLINT (this should eventually become its own library)
871    
872    Notes:
873    
874    I am not 100% happy with the way I separated the elaborator (and its
875    data structures) from FLINT.  Two instances of the same problem:
876    
877        1. Data structures contain certain fields that carry FLINT-specific
878           information.  I hacked around this using exn and the property list
879           module from smlnj-lib.  But the fact that there are middle-end
880           specific fields around at all is a bit annoying.
881    
882        2. The elaborator calculates certain FLINT-related information.  I tried
883           to make this as abstract as I could using functorization, but, again,
884           the fact that the elaborator has to perform calculations on behalf
885           of the middle-end at all is not nice.
886    
887        3. Having to used exn and property lists is unfortunate because it
888           weakens type checking.  The other alternative (parameterizing
889           nearly *everything*) is not appealing, though.
890    
891    I removed the "rebinding =" warning hack because due to the new organization
892    it was awkward to maintain it.  As a result, the compiler now issues some of
893    these warnings when compiling init.cmi during bootstrap compilation. On
894    the plus side, you also get a warning when you do, for example:
895       val op = = Int32.+
896    which was not the case up to now.
897    
898    I placed "assign" and "deref" into the _Core structure so that the
899    code that deals with the "lazy" keyword can find them there.  This
900    removes the need for having access to the primitive environment
901    during elaboration.
902    
903    ----------------------------------------------------------------------
904    Name: Matthias Blume
905    Date: 2001/08/13
906    Tag: blume-20010813-closures
907    Description:
908    
909    This fix was sent to us by Zhong Shao.  It is supposed to improve the
910    performance of certain loops by avoiding needless closure allocation.
911    
912    ----------------------------------------------------------------------
913    Name: Lal George
914    Date: 2001/07/31 10:03:23 EDT 2001
915    Tag: george-20010731-x86-fmalloc
916    Description: Fixed bug in x86 calls
917    
918        There was a bug where call instructions would mysteriously
919        vanish. The call instruction had to be one that returned
920        a floating point value.
921    
922    ----------------------------------------------------------------------
923    Name: Lal George
924    Date: 2001/07/19 16:36:29 EDT 2001
925    Tag: george-20010719-simple-cells
926    Description:
927    
928    I have dramatically simplified the interface for CELLS in MLRISC.
929    
930    In summary, the cells interface is broken up into three parts:
931    
932      1. CellsBasis : CELLS_BASIS
933    
934            CellsBasis is a top level structure and common for all
935            architectures.  it contains the definitions of basic datatypes
936            and utility  functions over these types.
937    
938      2. functor Cells() : CELLS
939    
940            Cells generates an interface for CELLS that incorporates the
941            specific resources on the target architecture, such as the
942            presence of special register classes, their number and size,
943            and various useful substructures.
944    
945      3. <ARCH>CELLS
946    
947            e.g. SparcCells: SPARCCELLS
948    
949            <ARCH>CELLS usually contains additional bindings for special
950            registers  on the architecture, such as:
951    
952                    val r0 : cell           (* register zero *)
953                    val y : cell            (* Y register *)
954                    val psr : cell          (* processor status register *)
955                    ...
956    
957            The structure returned by applying the Cells functor is opened
958            in this interface.
959    
960    The main implication of all this is that the datatypes for cells is
961    split between CellsBasis and CELLS -- a fairly simple change for user
962    code.
963    
964    In the old scheme the CELLS interface had a definitional binding of
965    the form:
966    
967            signature CELLS = sig
968    
969               structure CellsBasis = CellsBasis
970    
971               ...
972    
973            end
974    
975    With all the sharing constraints that goes on in MLRISC, this old
976    design  quickly leads to errors such as:
977    
978            "structure definition spec inside of sharing ... "
979    
980    
981    and appears to require an unacceptable amount of sharing and where
982    constraint hackery.
983    
984    I think this error message (the interaction of definitional specs and
985    sharing) requires more explanation on our web page.
986    
987    ----------------------------------------------------------------------
988    Name: Matthias Blume
989    Date: 2001/07/19 15:00:00 EDT
990    Tag: blume-20010719-libreorg
991    Description:
992    
993    This update puts together a fairly extensive but straightforward change
994    to the way the libraries that implement the interactive system are
995    organized:
996    
997       The biggest change is the elimination of structure Compiler.  As a
998       replacement for this structure, there is now a CM library
999       (known as $smlnj/compiler.cm or $smlnj/compiler/current.cm)
1000       that exports all the substructures of the original structure Compiler
1001       directly.  So instead of saying Compiler.Foo.bar one now simply
1002       says Foo.bar.  (The CM libraries actually export a collection of
1003       structures that is richer than the collection of substructures of
1004       structure Compiler.)
1005    
1006       To make the transition smooth, there is a separate library called
1007       $smlnj/compiler/compiler.cm which puts together and exports the
1008       original structure Compiler (or at least something very close to it).
1009    
1010       There are five members of the original structure Compiler
1011       that are not exported directly but which instead became members
1012       of a new structure Backend (described by signature BACKEND).  These are:
1013       structure Profile (: PROFILE), structure Compile (: COMPILE), structure
1014       Interact (: INTERACT), structure Machine (: MACHINE), and val
1015       architecture (: string).
1016    
1017       Structure Compiler.Version has become structure CompilerVersion.
1018    
1019       Cross-compilers for alpha32, hppa, ppc, sparc, and x86 are provided
1020       by $smlnj/compiler/<arch>.cm where <arch> is alpha32, hppa, ppc, sparc,
1021       or x86, respectively.
1022       Each of these exports the same frontend structures that
1023       $smlnj/compiler.cm exports.  But they do not have a structure Backend
1024       and instead export some structure <Arch>Backend where <Arch> is Alpha32,
1025       Hppa, PPC, Sparc, or X86, respectively.
1026    
1027       Library $smlnj/compiler/all.cm exports the union of the exports of
1028       $smlnj/compiler/<arch>.cm
1029    
1030       There are no structures <Arch>Compiler anymore, use
1031       $smlnj/compiler/<arch>.cm instead.
1032    
1033       Library host-compiler-0.cm is gone.  Instead, the internal library
1034       that instantiates CM is now called cm0.cm.  Selection of the host
1035       compiler (backend) is no longer done here but. (Responsibility for it
1036       now lies with $smlnj/compiler/current.cm.  This seems to be more
1037       logical.)
1038    
1039       Many individual files have been moved or renamed.  Some files have
1040       been split into multiple files, and some "dead" files have been deleted.
1041    
1042    Aside from these changes to library organization, there are also changes
1043    to the way the code itself is organized:
1044    
1045       Structure Binfile has been re-implemented in such a way that it no
1046       longer needs any knowledge of the compiler.  It exclusively deals
1047       with the details of binfile layout.  It no longer invokes the
1048       compiler (for the purpose of creating new prospective binfile
1049       content), and it no longer has any knowledge of how to interpret
1050       pickles.
1051    
1052       Structure Compile (: COMPILE) has been stripped down to the bare
1053       essentials of compilation.  It no longer deals with linking/execution.
1054       The interface has been cleaned up considerably.
1055    
1056       Utility routines for dealing with linking and execution have been
1057       moved into their own substructures.
1058    
1059       (The ultimate goal of these changes is to provide a light-weight
1060       binfile loader/linker (at least for, e.g., stable libraries) that
1061       does not require CM or the compiler to be present.)
1062    
1063    CM documentation has been updated to reflect the changes to library
1064    organization.
1065    
1066    ----------------------------------------------------------------------
1067    Name: Matthias Blume
1068    Date: 2001/07/10 17:30:00 EDT
1069    Tag: Release_110_34
1070    Description:
1071    
1072    Minor tweak to 110.34 (re-tagged):
1073    
1074      - README.html file added to CVS repository
1075      - runtime compiles properly under FreeBSD 3.X and 4.X
1076    
1077    ----------------------------------------------------------------------
1078    Name: Matthias Blume
1079    Date: 2001/07/10 17:30:00 EDT
1080    Tag: Release_110_34
1081    Description:
1082    
1083    New version number (110.34). New bootfiles.
1084    
1085    ----------------------------------------------------------------------
1086    Name: Matthias Blume
1087    Date: 2001/07/09 16:00:00 EDT
1088    Tag: blume-20010709-more-varargs
1089    Description:
1090    
1091    I changed the handling of varargs in ml-nlffigen again:
1092    The ellipsis ... will now simply be ignored (with an accompanying warning).
1093    
1094    The immediate effect is that you can actually call a varargs function
1095    from ML -- but you can't actually supply any arguments beyond the ones
1096    specified explicitly.  (For example, you can call printf with its format
1097    string, but you cannot pass additional arguments.)
1098    
1099    This behavior is only marginally more useful than the one before, but
1100    it has the advantage that a function or, more importantly, a function
1101    type never gets dropped on the floor, thus avoiding follow-up problems with
1102    other types that refer to the offending one.
1103    
1104    ----------------------------------------------------------------------
1105    Name: Matthias Blume
1106    Date: 2001/07/09 11:25:00 EDT
1107    Tag: blume-20010709-varargs
1108    Description:
1109    
1110    1. ckit-lib.cm now exports structure Error
1111    2. ml-nlffigen reports occurences of "..." (i.e., varargs function types)
1112       with a warning accompanied by a source location.  Moreover, it
1113       merely skips the offending function or type and proceeds with the
1114       rest of its work.u  As a result, one can safely feed C code containing
1115       "..." to ml-nlffigen.
1116    3. There are some internal improvements to CM, providing slightly
1117       more general string substitutions in the tools subsystem.
1118    
1119    ----------------------------------------------------------------------
1120    Name: Matthias Blume
1121    Date: 2001/06/27 15:10:00 EDT
1122    Tag: blume-20010627-concur
1123    Description:
1124    
1125    Fixed a small bug in CM's handling of parallel compilation.
1126    (You could observe the bug by Control-C-interrupting an ordinary
1127    CMB.make or CM.stabilize and then attaching some compile servers.
1128    The result was that all of a sudden the previously interrupted
1129    compilation would continue on its own.  This was because of
1130    an over-optimization: CM did not bother to clean out certain queues
1131    when no servers were attached "anyway", resulting in the contents
1132    of these queues to grab control when new servers did get attached.)
1133    
1134    There is also another minor update to the CM manual.
1135    
1136    ----------------------------------------------------------------------
1137    Name: Matthias Blume
1138    Date: 2001/06/26 16:15:00 EDT
1139    Tag: blume-20010626-cmdoc
1140    Description:
1141    
1142    Minor typo fixed in CM manual (syntax diagram for libraries).
1143    
1144    ----------------------------------------------------------------------
1145    Name: Matthias Blume
1146    Date: 2001/06/25 22:55:00 EDT
1147    Tag: blume-20010625-x86pc
1148    Description:
1149    
1150    Fixed a nasty bug in the X86 assembly code that caused signal
1151    handlers to fail (crash) randomly.
1152    
1153    ----------------------------------------------------------------------
1154    Name: Matthias Blume
1155    Date: 2001/06/25 12:05:00 EDT
1156    Tag: blume-20010625-nlffigen
1157    Description:
1158    
1159    This update fixes a number of minor bugs in ml-nlffigen as reported by
1160    Nick Carter <nbc@andrew.cmu.edu>.
1161    
1162      1. Silly but ok typedefs of the form "typedef void myvoid;" are now accepted.
1163      2. Default names for generated files are now derived from the name of
1164         the C file *without its directory*.  In particular, this causes generated
1165         files to be placed locally even if the C file is in some system directory.
1166      3. Default names for generated signatures and structures are also derived
1167         from the C file name without its directory.  This avoids silly things
1168         like "structure GL/GL".
1169         (Other silly names are still possible because ml-nlffigen does not do
1170          a thorough check of whether generated names are legal ML identifiers.
1171          When in doubt, use command line arguments to force particular names.)
1172    
1173    ----------------------------------------------------------------------
1174    Name: Matthias Blume
1175    Date: 2001/06/21 12:25:00 EDT
1176    Tag: blume-20010621-eXene
1177    Description:
1178    
1179    eXene now compiles and (sort of) works again.
1180    
1181    The library name (for version > 110.33) is $/eXene.cm.
1182    
1183    I also added an new example in src/eXene/examples/nbody.  See the
1184    README file there for details.
1185    
1186    ----------------------------------------------------------------------
1187  Name: Matthias Blume  Name: Matthias Blume
1188  Date: 2001/06/20 16:40:00 EDT  Date: 2001/06/20 16:40:00 EDT
1189  Tag: blume-20010620-cml  Tag: blume-20010620-cml
# Line 2469  Line 3640 
3640       elaborator). There were a lot of changes during my "linkpath" trials       elaborator). There were a lot of changes during my "linkpath" trials
3641       that could have been reverted to their original state but weren't.       that could have been reverted to their original state but weren't.
3642       Please, don't be too harsh on me for messing with this code a bit more       Please, don't be too harsh on me for messing with this code a bit more
3643       than what was strictly necessary...  (I _did_ resist the tempation       than what was strictly necessary...  (I _did_ resist the temptation
3644       of doing any "global reformatting" to avoid an untimely death at       of doing any "global reformatting" to avoid an untimely death at
3645       Dave's hands. :)       Dave's hands. :)
3646    

Legend:
Removed from v.844  
changed lines
  Added in v.1055

root@smlnj-gforge.cs.uchicago.edu
ViewVC Help
Powered by ViewVC 1.0.0