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revision 904, Mon Aug 20 19:50:05 2001 UTC revision 1067, Fri Feb 15 17:08:17 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: Matthias Blume  Name: Matthias Blume
17    Date: 2002/02/15 12:08:00 EST
18    Tag: blume-20020215-iptrs
19    Description:
20    
21    Two improvements to ml-nlffigen:
22    
23      1. Write files only if they do not exist or if their current contents
24         do not coincide with what's being written.  (That is, avoid messing
25         with the time stamps unless absolutely necessary.)
26    
27      2. Implement a "repository" mechanism for generated files related
28         to "incomplete pointer types".   See the README file for details.
29    
30    ----------------------------------------------------------------------
31    Name: Matthias Blume
32    Date: 2002/02/14 11:50:00 EST
33    Tag: blume-20020214-quote
34    Description:
35    
36    Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm).  This is required
37    because of the new and improved tag generation scheme.  (Thanks to Allen
38    Leung for pointing it out.)
39    
40    ----------------------------------------------------------------------
41    Name: Lal George
42    Date: 2002/02/14 09:55:27 EST 2002
43    Tag: george-20020214-isabelle-bug
44    Description:
45    
46    Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
47    of Isabelle on the x86.
48    
49    From Allen:
50    -----------
51     I've found the problem:
52    
53         in ra-core.sml, I use the counter "blocked" to keep track of the
54         true number of elements in the freeze queue.  When the counter goes
55         to zero, I skip examining the queue.  But I've messed up the
56         bookkeeping in combine():
57    
58             else ();
59             case !ucol of
60               PSEUDO => (if !cntv > 0 then
61                     (if !cntu > 0 then blocked := !blocked - 1 else ();
62                                        ^^^^^^^^^^^^^^^^^^^^^^^
63                      moveu := mergeMoveList(!movev, !moveu)
64                     )
65                  else ();
66    
67         combine() is called to coalesce two nodes u and v.
68         I think I was thinking that if the move counts of u and v are both
69         greater than zero then after they are coalesced then one node is
70         removed from the freeze queue.  Apparently I was thinking that
71         both u and v are of low degree, but that's clearly not necessarily true.
72    
73    
74    02/12/2002:
75        Here's the patch.  HOL now compiles.
76    
77        I don't know how this impact on performance (compile
78        time or runtime).  This bug caused the RA (especially on the x86)
79        to go thru the potential spill phase when there are still nodes on the
80        freeze queue.
81    
82    
83    
84    
85    ----------------------------------------------------------------------
86    Name: Matthias Blume
87    Date: 2002/02/13 22:40:00 EST
88    Tag: blume-20020213-fptr-rtti
89    Description:
90    
91    Fixed a bug in ml-nlffigen that was introduced with one of the previous
92    updates.
93    
94    ----------------------------------------------------------------------
95    Name: Matthias Blume
96    Date: 2002/02/13 16:41:00 EST
97    Tag: blume-20020213-cmlpq
98    Description:
99    
100    Added new priority queue export symbols (which have just been added to
101    smlnj-lib.cm) to CML's version of smlnj-lib.cm.  (Otherwise CML would
102    not compile and the installer would choke.)
103    
104    ----------------------------------------------------------------------
105    Name: Matthias Blume
106    Date: 2002/02/13 16:15:00 EST
107    Tag: blume-20020213-various
108    Description:
109    
110    1. More tweaks to ml-nlffigen:
111    
112       - better internal datastructures (resulting in slight speedup)
113       - "-match" option requires exact match
114       - "localized" gensym counters (untagged structs/unions nested within
115         other structs/unions or within typedefs get a fresh counter; their
116         tag will be prefixed by a concatenation of their parents' tags)
117       - bug fixes (related to calculation of transitive closure of types
118         to be included in the output)
119    
120    2. Minor Basis updates:
121    
122       - added implementations for List.collate and Option.app
123    
124    ----------------------------------------------------------------------
125    Name: Matthias Blume
126    Date: 2002/02/11 15:55:00 EST
127    Tag: blume-20020211-gensym
128    Description:
129    
130    Added a "-gensym" option to command line of ml-nlffigen.  This can be
131    used to specify a "stem" -- a string that is inserted in all "gensym'd"
132    names (ML structure names that correspond to unnamed C structs, unions,
133    and enums), so that separate runs of ml-nlffigen do not clash.
134    
135    ----------------------------------------------------------------------
136    Name: Matthias Blume
137    Date: 2002/02/11 12:05:00 EST
138    Tag: blume-20020211-gensml
139    Description:
140    
141    A quick fix for a problem with GenSML (in the pgraph-util library):
142    Make generation of toplevel "local" optional.  (Strictly speaking,
143    signature definitions within "local" are not legal SML.)
144    
145    Other than that: updates to INSTALL and cm/TODO.
146    
147    ----------------------------------------------------------------------
148    Name: Matthias Blume
149    Date: 2002/02/08 15:00:00 EST
150    Tag: blume-20020208-uniquepid
151    Description:
152    
153    0. Version number has been bumped to 110.38.1.  NEW BOOTFILES!!!
154    
155    1. The installer (config/install.sh) has gotten smarter:
156    
157         - Configuration options are a bit easier to specify now
158           (in config/targets).
159         - Bug in recognizing .tar.bz2 files fixed.
160         - Installer automatically resolves dependencies between
161           configuration options (e.g., if you ask for eXene, you will
162           also get cml -- regardless whether you asked for it or not).
163         - Installer can run in "quieter mode" by setting the environment
164           variable INSTALL_QUIETLY to "true".  "Quieter" does not mean
165           "completely silent", though.
166         - Build HashCons library as part of smlnj-lib.
167    
168    2. A new scheme for assigning persistent identifiers to compilation
169       units (and, by extension, to types etc.) has been put into place.
170       This fixes a long-standing bug where types and even dynamic values
171       can get internally confused, thereby compromising type safety
172       (abstraction) and dynamic correctness.  See
173    
174         http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
175    
176       for an example of how things could go wrong until now.
177    
178       The downside of the new scheme is that pids are not quite as
179       persistent as they used to be: CM will generate a fresh pid
180       for every compilation unit that it thinks it sees for the first
181       time.  That means that if you compile starting from a clean, fresh
182       source tree at two different times, you end up with different
183       binaries.
184    
185       Cutoff recompilation, however, has not been compromised because
186       CM keeps pid information in special caches between runs.
187    
188    ----------------------------------------------------------------------
189    Name: Lal George
190    Date: 2002/02/07 15:34:13 EST 2002
191    Tag: <none>
192    Description:
193    
194    Compilers that generate assembly code may produce  global labels
195    whose value is resolved at link time. The various peephole optimization
196    modules did not take this in account.
197    
198    TODO. The Labels.addrOf function should really return an option
199    type so that clients are forced to deal with this issue, rather
200    than an exception being raised.
201    
202    ----------------------------------------------------------------------
203    Name: Lal George
204    Date: 2002/02/06 13:55:02 EST
205    Tag: george-20020206-ra-breakup
206    Description:
207    
208    1. A bug fix from Allen.
209    
210        A typo causes extra fstp %st(0)'s to be generated at compensation
211        edges, which might cause stack underflow traps at runtime.  This
212        occurs in fft where there are extraneous fstps right before the 'into'
213        trap instruction (in this case they are harmless since none of the
214        integers overflow.)
215    
216    2. Pulled out various utility modules that were embedded in the modules
217       of the register allocator. I need these modules for other purposes, but
218       they are not complete enough to put into a library (just yet).
219    ----------------------------------------------------------------------
220    Name: Matthias Blume
221    Date: 2002/01/31 16:05:00 EST
222    Tag: blume-20020131-sparc-ccalls
223    Description:
224    
225    1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
226       of extra stack space by mistake.  Fixed.
227    
228    2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
229    
230    ----------------------------------------------------------------------
231    Name: Allen Leung
232    Date: 2002/01/30
233    Tag: leunga-20020130-nowhere-bug-fix
234    Description:
235    
236       MLRISC bug fixes:
237       1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
238       2. MachineInt.fromString was negating its value.
239    
240    ----------------------------------------------------------------------
241    Name: Matthias Blume
242    Date: 2002/01/29
243    Tag: blume-20020129-INSTALL
244    Description:
245    
246    - Added somewhat detailed installation instructions (file INSTALL).
247    - Fixed curl-detection bug in config/install.sh.
248    - It is now possible to select the URL getter using the URLGETTER
249      environment variable:
250    
251          not set / "unknown"      --> automatic detection (script tries wget,
252                                       curl, and lynx)
253          "wget" / "curl" / "lynx" --> use the specified program (script "knows"
254                                       how to properly invoke them)
255          other                    --> use $URLGETTER directly, it must take
256                                       precisely two command-line arguments
257                                       (source URL and destination file name)
258    
259    ----------------------------------------------------------------------
260    Name: Matthias Blume
261    Date: 2002/01/28
262    Tag: blume-20020128-sparc-ccalls
263    Description:
264    
265    - Fixed problem with calculation of "used" registers in sparc-c-calls.
266    - Make use of the allocParam argument in sparc-c-calls.
267    
268    ----------------------------------------------------------------------
269    Name: Matthias Blume
270    Date: 2002/01/28
271    Tag: blume-20020128-allocParam
272    Description:
273    
274    John Reppy:  Changes c-calls API to accept client-callback for
275    allocating extra stack space.
276    me: Corresponding changes to mlriscGen (using a dummy argument that
277        does not change the current behavior).
278    
279    ----------------------------------------------------------------------
280    Name: Matthias Blume
281    Date: 2002/01/28 12:00:00
282    Tag: Release_110_38
283    Description:
284    
285    This time for real!!!
286    
287    ----------------------------------------------------------------------
288    Name: Matthias Blume
289    Date: 2002/01/28 10:56:00 EST
290    Tag: blume-20020128-retraction
291    Description:
292    
293    0. Retracted earlier 110.38.  (The Release_110_38 tag has been replaced
294       with blume-Release_110_38-retracted.)
295    
296    1. Fixed a problem with incorrect rounding modes in real64.sml.
297       (Thanks to Andrew Mccreight <andrew.mccreight@yale.edu>.)
298    
299    2. A bug in ml-nlffigen related to the handling of unnamed structs, unions,
300       and enums fixed.  The naming of corresponding ML identifiers should
301       now be consistent again.
302    
303    ----------------------------------------------------------------------
304    Name: Allen Leung
305    Date: 2002/01/27
306    Tag: leunga-20020127-nowhere
307    Description:
308    
309       Added a target called nowhere in the configuration scripts.
310       Enabling this will build the MLRISC 'nowhere' tool (for translating
311       programs with where-clauses into legal SML code) during installation.
312    
313    ----------------------------------------------------------------------
314    Name: Matthias Blume
315    Date: 2002/01/25 21:27:00 EST
316    Tag: blume-Release_110_38-retracted
317    Description:
318    
319    Call it a (working) release!  Version is 110.38. Bootfiles are ready.
320    
321    README will be added later.
322    
323    !!! NOTE:  Re-tagged as blume-Release_110_38-retracted. Original tag
324    (Release_110_38) removed.  Reason: Last-minute bug fixes.
325    
326    ----------------------------------------------------------------------
327    Name: Matthias Blume
328    Date: 2002/01/25
329    Tag: blume-20020125-ffi
330    Description:
331    
332    A large number of tweaks and improvements to ml-nlffi-lib and
333    ml-nlffigen:
334    
335       - ML represenation types have been streamlined
336       - getter and setter functions work with concrete values, not abstract
337         ones where possible
338       - ml-nlffigen command line more flexible (see README file there)
339       - some bugs have been fixed (hopefully)
340    
341    ----------------------------------------------------------------------
342    Name: Lal George
343    Date: 2002/01/24
344    Tag: george-20020124-risc-ra-interface
345    Description:
346    
347       There is a dramatic simplification in the interface to the
348       register allocator for RISC architectures as a result of making
349       parallel copy instructions explicit.
350    
351    ----------------------------------------------------------------------
352    Name: Matthias Blume
353    Date: 2002/01/22
354    Tag: blume-20020122-x86-ccalls
355    Description:
356    
357    Bug fix for c-calls on x86 (having to do with how char- and
358    short-arguments are being handled).
359    
360    ----------------------------------------------------------------------
361    Name: Matthias Blume
362    Date: 2002/01/21
363    Tag: blume-20020121-ff
364    Description:
365    
366    Another day of fiddling with the FFI...
367    
368    1. Bug fix/workaround:  CKIT does not complain about negative array
369       dimensions, so ml-nlffigen has to guard itself against this possibility.
370       (Otherwise a negative dimension would send it into an infinite loop.)
371    
372    2. Some of the abstract types (light objects, light pointers, most "base"
373       types) in structure C are now eqtypes.
374    
375    3. Added constructors and test functions for NULL function pointers.
376    
377    ----------------------------------------------------------------------
378    Name: Matthias Blume
379    Date: 2002/01/18
380    Tag: blume-20020118-ready-for-new-release
381    Description:
382    
383    Made config/srcarchiveurl point to a new place.  (Will provide boot
384    files shortly.)
385    
386    Maybe we christen this to be 110.38?
387    
388    ----------------------------------------------------------------------
389    Name: Matthias Blume
390    Date: 2002/01/18
391    Tag: blume-20020118-more-ffifiddle
392    Description:
393    
394    Today's FFI fiddling:
395    
396      - Provided a structure CGetSet with "convenient" versions of C.Get.* and
397        C.Set.* that use concrete (MLRep.*) arguments and results instead
398        of abstract ones.
399    
400      - Provided word-style bit operations etc. for "int" representation
401        types in MLRep.S<Foo>Bitops where <Foo> ranges over Char, Int, Short,
402        and Long.
403    
404    ----------------------------------------------------------------------
405    Name: Matthias Blume
406    Date: 2002/01/18
407    Tag: blume-20020118-use-x86-fp
408    Description:
409    
410    Now that x86-fast-fp seems to be working, I turned it back on again
411    by default.  (Seems to work fine now, even with the FFI.)
412    
413    Other than that, I added some documentation about the FFI to
414    src/ml-nlffigen/README and updated the FFI test examples in
415    src/ml-nlffi-lib/Tests/*.
416    
417    ----------------------------------------------------------------------
418    Name: Allen Leung
419    Date: 2002/01/17
420    Tag: leunga-20020117-x86-fast-fp-call
421    Description:
422    
423       1. Fixed a problem with handling return fp values when x86's fast fp
424          mode is turned on.
425    
426       2. Minor pretty printing fix for cellset.  Print %st(0) as %st(0) instead
427          of %f32.
428    
429       3. Added a constructor INT32lit to the ast of MLRISC tools.
430    
431    ----------------------------------------------------------------------
432    Name: Matthias Blume
433    Date: 2002/01/16
434    Tag: blume-20020116-ffifiddle
435    Description:
436    
437    More fiddling with the FFI interface:
438    
439     - Make constness 'c instead of rw wherever possible.  This eliminates
440       the need for certain explicit coercions.  (However, due to ML's
441       value polymorphism, there will still be many cases where explicit
442       coercions are necessary.  Phantom types are not the whole answer
443       to modeling a subtyping relationship in ML.)
444    
445     - ro/rw coersions for pointers added.  (Avoids the detour through */&.)
446    
447     - "printf" test example added to src/ml-nlffi-lib/Tests.  (Demonstrates
448       clumsy workaround for varargs problem.)
449    
450    ----------------------------------------------------------------------
451    Name: Lal George
452    Date: 2002/01/15
453    Tag: <none>
454    Description:
455    
456    1. Since COPY instructions are no longer native to the architecture,
457       a generic functor can be used to implement the expandCopies function.
458    
459    2. Allowed EXPORT and IMPORT pseudo-op declarations to appear inside a
460       TEXT segment.
461    
462    ----------------------------------------------------------------------
463    Name: Matthias Blume
464    Date: 2002/01/15
465    Tag: blume-20020115-ffiupdates
466    Description:
467    
468    1. Fix for bug resulting in single-precision float values being returned
469       incorrectly from FFI calls.
470    
471    2. Small modifications to C FFI API:
472    
473        - memory-allocation routines return straight objects (no options)
474          and raise an exception in out-of-memory situations
475        - unsafe extensions to cast between function pointers and pointers
476          from/to ints
477        - added structure C_Debug as an alternative to structure C where
478          pointer-dereferencing (|*| and |*!) always check for null-pointers
479        - added open_lib' to DynLinkage;  open_lib' works like open_lib
480          but also takes a (possibly empty) list of existing library handles
481          that the current library depends on
482    
483    ----------------------------------------------------------------------
484    Name: Matthias Blume
485    Date: 2002/01/10
486    Tag: blume-20020110-newffigen
487    Description:
488    
489    1. Updates to portable graph code.
490    
491    2. Major update to ml-nlffigen and ml-nlffi-lib.  Things are much
492       more scalable now so that even huge interfaces such as the one
493       for GTK compile in finite time and space. :-)
494       See src/ml-nlffigen/README for details on what's new.
495    
496    ----------------------------------------------------------------------
497    Name: Lal George
498    Date: 2001/01/09 14:31:35 EST 2002
499    Tag: george-20011206-rm-native-copy
500    Description:
501    
502            Removed the native COPY and FCOPY instructions
503            from all the architectures and replaced it with the
504            explicit COPY instruction from the previous commit.
505    
506            It is now possible to simplify many of the optimizations
507            modules that manipulate copies. This has not been
508            done in this change.
509    
510    ----------------------------------------------------------------------
511    Name: Lal George
512    Date: 2001/12/06 16:50:13 EST 2001
513    Tag: george-20011206-mlrisc-instruction
514    Description:
515    
516    Changed the representation of instructions from being fully abstract
517    to being partially concrete. That is to say:
518    
519      from
520            type instruction
521    
522      to
523            type instr                              (* machine instruction *)
524    
525            datatype instruction =
526                LIVE of {regs: C.cellset, spilled: C.cellset}
527              | KILL of {regs: C.cellset, spilled: C.cellset}
528              | COPYXXX of {k: CB.cellkind, dst: CB.cell list, src: CB.cell list}
529              | ANNOTATION of {i: instruction, a: Annotations.annotation}
530              | INSTR of instr
531    
532    This makes the handling of certain special instructions that appear on
533    all architectures easier and uniform.
534    
535    LIVE and KILL say that a list of registers are live or killed at the
536    program point where they appear. No spill code is generated when an
537    element of the 'regs' field is spilled, but the register is moved to
538    the 'spilled' (which is present, more for debugging than anything else).
539    
540    LIVE replaces the (now deprecated) DEFFREG instruction on the alpha.
541    We used to generate:
542    
543            DEFFREG f1
544            f1 := f2 + f3
545            trapb
546    
547    but now generate:
548    
549            f1 := f2 + f3
550            trapb
551            LIVE {regs=[f1,f2,f3], spilled=[]}
552    
553    Furthermore, the DEFFREG (hack) required that all floating point instruction
554    use all registers mentioned in the instruction. Therefore f1 := f2 + f3,
555    defines f1 and uses [f1,f2,f3]! This hack is no longer required resulting
556    in a cleaner alpha implementation. (Hopefully, intel will not get rid of
557    this architecture).
558    
559    COPYXXX is intended to replace the parallel COPY and FCOPY  available on
560    all the architectures. This will result in further simplification of the
561    register allocator that must be aware of them for coalescing purposes, and
562    will also simplify certain aspects of the machine description that provides
563    callbacks related to parallel copies.
564    
565    ANNOTATION should be obvious, and now INSTR represents the honest to God
566    machine instruction set!
567    
568    The <arch>/instructions/<arch>Instr.sml files define certain utility
569    functions for making porting easier -- essentially converting upper case
570    to lower case. All machine instructions (of type instr) are in upper case,
571    and the lower case form generates an MLRISC instruction. For example on
572    the alpha we have:
573    
574      datatype instr =
575         LDA of {r:cell, b:cell, d:operand}
576       | ...
577    
578      val lda : {r:cell, b:cell, d:operand} -> instruction
579        ...
580    
581    where lda is just (INSTR o LDA), etc.
582    
583    ----------------------------------------------------------------------
584    Name: Matthias Blume
585    Date: 2001/11/22 21:40:00 EST
586    Tag: Release_110_37
587    Description:
588    
589    Release 110.37.  This time for real.
590    
591    ----------------------------------------------------------------------
592    Name: Matthias Blume
593    Date: 2001/11/21 16:35:00 EST
594    Tag: blume-20011121-foot-in-mouth
595    Description:
596    
597    Removed the "Release_110_37" tag because of a serious bug.
598    This will be re-tagged once the bug is fixed.
599    
600    ----------------------------------------------------------------------
601    Name: Matthias Blume
602    Date: 2001/11/21 16:14:00 EST
603    Tag: blume-20011121-forgottenfile
604    Description:
605    
606    Forgot to add a file.  (Just a .tex-file -- part of
607    the CM manual source.)
608    
609    ----------------------------------------------------------------------
610    Name: Matthias Blume
611    Date: 2001/11/21 16:10:00 EST
612    Tag: blume-20011121-invalid_110_37
613    Description:
614    
615    Note: I removed the original tag "Release_110_37" from this commit
616          because we found a serious bug in all non-x86 backends.
617          - Matthias
618    
619    1. Modifications to the SML/NJ code generator and to the runtime system
620       so that code object name strings are directly inserted into code
621       objects at code generation time.  The only business the runtime system
622       has with this is now to read the name strings on occasions.
623       (The encoding of the name string has also changed somewhat.)
624    
625    2. CM now implements a simple "set calculus" for specifying export lists.
626       In particular, it is now possible to refer to the export lists of
627       other libraries/groups/sources and form unions as well as differences.
628       See the latest CM manual for details.
629    
630    3. An separate notion of "proxy" libraries has again be eliminated from
631       CM's model.  (Proxy libraries are now simply a special case of using
632       the export list calculus.)
633    
634    4. Some of the existing libraries now take advantage of the new set
635       calculus.
636       (Notice that not all libraries have been converted because some
637       of the existing .cm-files are supposed to be backward compatible
638       with 110.0.x.)
639    
640    5. Some cleanup in stand-alone programs.  (Don't use "exnMessage" -- use
641       "General.exnMessage"!  The former relies on a certain hook to be
642       initialized, and that often does not happen in the stand-alone case.)
643    
644    ----------------------------------------------------------------------
645    Name: Lal George
646    Date: 2001/11/21  13:56:18 EST
647    Tag: george-2001121-pseudo-ops
648    Description:
649    
650      Implemented a complete redesign of MLRISC pseudo-ops. Now there
651      ought to never be any question of incompatabilities with
652      pseudo-op syntax expected by host assemblers.
653    
654      For now, only modules supporting GAS syntax are implemented
655      but more should follow, such as MASM, and vendor assembler
656      syntax, e.g. IBM as, Sun as, etc.
657    
658    ----------------------------------------------------------------------
659    Name: Matthias Blume
660    Date: 2001/11/14 11:52:00 EST
661    Tag: blume-20011114-srcname
662    Description:
663    
664    1. Routed the name of the current source file to mlriscgen where it
665       should be directly emitted into the code object.  (This last part
666       is yet to be done.)
667    
668    2. Some cleanup of the pgraph code to make it match the proposal that
669       I put out the other day.  (The proposal notwithstanding, things are
670       still in flux here.)
671    
672    ----------------------------------------------------------------------
673    Name: Lal George
674    Date: 2001/11/14 09:44:04 EST
675    Tag:
676    Description:
677    
678      Fix for a backpatching bug reported by Allen.
679    
680      Because the boundary between short and long span-dependent
681      instructions is +/- 128, there are an astounding number of
682      span-dependent instructions whose size is over estimated.
683    
684      Allen came up with the idea of letting the size of span
685      dependent instructions be non-monotonic, for a maxIter
686      number of times, after which the size must be monotonically
687      increasing.
688    
689      This table shows the number of span-dependent instructions
690      whose size was over-estimated as a function of maxIter, for the
691      file Parse/parse/ml.grm.sml:
692    
693         maxIter            # of instructions:
694            10                      687
695            20                      438
696            30                      198
697            40                        0
698    
699      In compiling the compiler, there is no significant difference in
700      compilation speed between maxIter=10 and maxIter=40. Actually,
701      my measurements showed that maxIter=40 was a tad faster than
702      maxIter=10! Also 96% of the  files in the compiler reach a fix
703      point within 13 iterations, so fixing maxIter at 40, while high,
704      is okay.
705    
706    ----------------------------------------------------------------------
707    Name: Matthias Blume
708    Date: 2001/10/31 15:25:00 EST
709    Tag: blume-20011031-pgraph
710    Description:
711    
712    CKIT:
713    * Changed the "Function" constructor of type Ast.ctype to carry optional
714      argument identifiers.
715    * Changed the return type of TypeUtil.getFunction accordingly.
716    * Type equality ignores the argument names.
717    * TypeUtil.composite tries to preserve argument names but gives up quickly
718      if there is a mismatch.
719    
720    installation script:
721    * attempts to use "curl" if available (unless "wget" is available as well)
722    
723    CM:
724    * has an experimental implementation of "portable graphs" which I will
725      soon propose as an implementation-independent library format
726    * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
727    
728    NLFFI-LIB:
729    * some cleanup (all cosmetic)
730    
731    NLFFIGEN:
732    * temporarily disabled the mechanism that suppresses ML output for
733      C definitions whose identifiers start with an underscore character
734    * generate val bindings for enum constants
735    * user can request that only one style (light or heavy) is being used;
736      default is to use both (command-line arguments: -heavy and -light)
737    * fixed bug in handling of function types involving incomplete pointers
738    * generate ML entry points that take record arguments (i.e., using
739      named arguments) for C functions that have a prototype with named
740      arguments
741      (see changes to CKIT)
742    
743    ----------------------------------------------------------------------
744    Name: Allen Leung
745    Date: 2001/10/27 20:34:00 EDT
746    Tag: leunga-20011027-x86-fast-fp-call
747    Description:
748    
749       Fixed the bug described in blume-20010920-slowfp.
750    
751       The fix involves
752          1. generating FCOPYs in FSTP in ia32-svid
753          2. marking a CALL with the appropriate annotation
754    
755    ----------------------------------------------------------------------
756    Name: Matthias Blume
757    Date: 2001/10/16 11:32:00 EDT
758    Tag: blume-20011016-netbsd
759    Description:
760    
761    Underscore patch from Chris Richards (fixing problem with compiling
762    runtime system under recent NetBSD).
763    
764    ----------------------------------------------------------------------
765    Name: Allen Leung
766    Date: 2001/10/12 17:18:32 EDT 2001
767    Tag: leung-20011012-x86-printflowgraph
768    Description:
769    
770    X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
771    
772    ----------------------------------------------------------------------
773    Name: Lal George
774    Date: 2001/10/11 23:51:34 EDT
775    Tag: george-20011011-too-many-instrs
776    Description:
777    
778    The representation of a program point never expected to see more
779    than 65536 instructions in a basic block!
780    
781    ----------------------------------------------------------------------
782    Name: Lal George
783    Date: 2001/10/09 09:41:37 EDT
784    Tag: george-20011008-mlrisc-labels
785    Description:
786    
787    Changed the machine description files to support printing of
788    local and global labels in assembly code, based on host assembler
789    conventions.
790    
791    ----------------------------------------------------------------------
792    Name: Matthias Blume
793    Date: 2001/09/25 15:25:00 EDT
794    Tag: blume-20010925-exninfo
795    Description:
796    
797    I provided a non-hook implementation of exnName (at the toplevel) and
798    made the "dummy" implementation of exnMessage (at the toplevel) more
799    useful: if nothing gets "hooked in", then at least you are going to
800    see the exception name and a message indicating why you don't see more.
801    
802    [For the time being, programs that need exnMessage and want to use
803    ml-build should either use General.exnMessage (strongly recommended) or
804    refer to structure General at some other point so that CM sees a
805    static dependency.]
806    
807    [Similar remarks go for "print" and "use":  If you want to use their
808    functionality in stand-alone programs generated by ml-build, then use
809    TextIO.output and Backend.Interact.useFile (from $smlnj/compiler.cm).]
810    
811    ----------------------------------------------------------------------
812    Name: Matthias Blume
813    Date: 2001/09/20 17:28:00 EDT
814    Tag: blume-20010920-slowfp
815    Description:
816    
817    Allen says that x86-fast-fp is not safe yet, so I turned it off again...
818    
819    ----------------------------------------------------------------------
820    Name: Matthias Blume
821    Date: 2001/09/20 17:20:00 EDT
822    Tag: blume-20010920-canonicalpaths
823    Description:
824    
825    0. Updated the BOOT file (something that I forgot to do earlier).
826    
827    1. Small internal change to CM so that it avoids "/../" in filenames
828       as much as possible (but only where it is safe).
829    
830    2. Changed config/_run-sml (resulting in a changed bin/.run-sml) so
831       that arguments that contain delimiters are passed through correctly.
832       This change also means that all "special" arguments of the form
833       @SMLxxx... must come first.
834    
835    3. Changed install script to put relative anchor names for tool commands
836       into pathconfig.
837    
838    ----------------------------------------------------------------------
839    Name: Matthias Blume
840    Date: 2001/09/18 15:35:00 EDT
841    Tag: blume-20010918-readme11036
842    Description:
843    
844    Added README files.
845    
846    ----------------------------------------------------------------------
847    Name: Matthias Blume
848    Date: 2001/09/18 11:45:00 EDT
849    Tag: Release_110_36 (retag)
850    Description:
851    
852    Fixed mistake in config/preloads. Retagged as 110.36.
853    
854    ----------------------------------------------------------------------
855    Name: Matthias Blume
856    Date: 2001/09/18 09:40:00 EDT
857    Tag: Release_110_36_orig (tag changed)
858    Description:
859    
860    New version (110.36).  New bootfiles.
861    
862    ----------------------------------------------------------------------
863    Name: Matthias Blume
864    Date: 2001/09/14 16:15:00 EDT
865    Tag: blume-20010914-x86fastfp
866    Description:
867    
868    John committed some changes that Allen made, in particular a (hopefully)
869    correctly working version of the x86-fp module.
870    
871    I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
872    flag to "true".  Everything seems to compile to a fixpoint ok, and
873    "mandelbrot" speeds up by about 15%.
874    
875    ----------------------------------------------------------------------
876    Name: Matthias Blume
877    Date: 2001/09/13 11:20:00 EDT
878    Tag: blume-20010913-minimal
879    Description:
880    
881    1. Stefan Monnier's patch to fix a miscompilation problem that
882       was brought to light by John Reppy's work on Moby.
883    
884    2. Implemented a minimal "structure Compiler" that contains just
885       "version" and "architecture".  The minimal version will be
886       available when the full version is not.  This is for backward-
887       compatibility with code that wants to test Compiler.version.
888    
889    ----------------------------------------------------------------------
890    Name: Matthias Blume
891    Date: 2001/08/28 14:03:00 EDT
892    Tag: blume-20010828-ml-lex
893    Description:
894    
895    Fix for bug 1581, received from Neophytos Michael.
896    
897    ----------------------------------------------------------------------
898    Name: Matthias Blume
899    Date: 2001/08/27 11:20:00 EDT
900    Tag: blume-20010827-readme11035
901    Description:
902    
903    Fleshed out the README file for 110.35.
904    
905    ----------------------------------------------------------------------
906    Name: Matthias Blume
907    Date: 2001/08/24 17:10:00 EDT
908    Tag: Release_110_35
909    Description:
910    
911    New version number (110.35).  New bootfiles.
912    
913    ----------------------------------------------------------------------
914    Name: Lal George
915    Date: 2001/08/24 13:47:18 EDT 2001
916    Tag: george-20010824-MLRISC-graphs
917    Description:
918    
919     removed clusters from MLRISC completely and replaced with graphs.
920    
921    ----------------------------------------------------------------------
922    Name: Matthias Blume
923    Date: 2001/08/23 17:50:00 EDT
924    Tag: blume-20010823-toplevel
925    Description:
926    
927    - some reorganization of the code that implements various kinds of
928      environments in the compiler (static, dynamic, symbolic, combined)
929    - re-implemented the EnvRef module so that evalStream works properly
930      (if the stream contains references to "use", "CM.make", etc.)
931    - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
932    
933    ----------------------------------------------------------------------
934    Name: Matthias Blume
935  Date: 2001/08/20 15:50 EDT  Date: 2001/08/20 15:50 EDT
936  Tag: blume20010820-slipup  Tag: blume20010820-slipup
937  Description:  Description:
# Line 2895  Line 3813 
3813       elaborator). There were a lot of changes during my "linkpath" trials       elaborator). There were a lot of changes during my "linkpath" trials
3814       that could have been reverted to their original state but weren't.       that could have been reverted to their original state but weren't.
3815       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
3816       than what was strictly necessary...  (I _did_ resist the tempation       than what was strictly necessary...  (I _did_ resist the temptation
3817       of doing any "global reformatting" to avoid an untimely death at       of doing any "global reformatting" to avoid an untimely death at
3818       Dave's hands. :)       Dave's hands. :)
3819    

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