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revision 1229, Fri May 31 21:10:34 2002 UTC revision 1348, Fri Aug 29 17:06:53 2003 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume (blume@tti-c.org)
17    Date: 2003/08/28 17:00:00 CDT
18    Tag: blume-20030828-intinf
19    Description:
20    
21    This is a major update which comes with a version number bump
22    (110.42.99 -- yes, we are really close to 110.43 :-), NEW BOOTFILES,
23    and an implementation of IntInf in the Basis.
24    
25    There are a fairly large number of related changes and updates throughout
26    the system:
27    
28    Basis:
29            - Implemented IntInf.
30            - Made LargeInt a projection of IntInf (by filtering through INTEGER).
31            - Added some missing Real64 operations, most notably Real.toLargeInt.
32            - Added FixedInt as a synonym for Int32.
33    
34    compiler:
35            * Added support for a built-in intinf type.
36              - literals
37              - pattern matching
38              - conversion shortcuts (Int32.fromLarge o Int.toLarge etc.)
39              - overloading on literals and operations
40    
41            This required adding a primitive type intinf, some additional
42            primops, and implementations for several non-trivial intinf
43            operations in Core.  (The intinf type is completely abstract
44            to the compiler; all operations get delegated back to the Core.)
45    
46            * Intinf equality is handled by polyequal.  However, the compiler
47            does not print its usual warning in this case (since polyequal
48            is the right thing to do there).
49    
50            * Improved the organization of structure InlineT.
51    
52            * A word about conversion primops:
53            If conversions involving intinf do not cancel out during
54            CPS contract, then the compiler must insert calls to Core functions.
55            Since all core access must be resolved already during the FLINT
56            translate phase, it would be too late a the time of CPS contract
57            to add new Core calls.  For this reason, conversion primops
58            for intinf carry two arguments:  1. the numeric argument that
59            they are supposed to convert, and 2. the Core function that
60            can help with this conversion if necessary.  If CPS contract
61            eliminates a primop, then the associated Core function becomes
62            dead and goes away.  Intinf conversion primops that do not get
63            eliminated by CPS contract get rewritten into calls of their
64            core functions by a separate, new phase.
65    
66    interactive system:
67            - Control.Print.intinfDepth controls max length of intinf constants
68            being printed. (Analogous to Control.Print.stringDepth.)
69            - Cleanup in printutil and pputil: got rid of unused stuff and
70            duplicates; replaced some of the code with code that makes better
71            use of library functionality.
72    
73    CM:
74            Bugfix: parse-errors in init group (system/smlnj/init/init.cmi)
75            are no longer silent.
76    
77    CKIT:
78            Fixed mismatched uses of Int32 and LargeInt.  I always decided
79            in favor of LargeInt -- which is now the same as IntInf.
80            CKIT-knowledgable people should check whether this is what's
81            intended and otherwise change things back to using Int32 or
82            FixedInt.
83    
84    Throughout the code:
85            Started using IntInf.int literals and built-in operations
86            (e.g., comparison with 0) where this seems appropriate.
87    
88    
89    ----------------------------------------------------------------------
90    Name: Dave MacQueen (dbm@cs.uchicago.edu)
91    Date: 2003/08/13 11:36:00 CDT
92    Tag: dbm-20030813-mcz-merge1
93    Description:
94    
95    Merging changes from the mcz-branch development branch into trunk.
96    These changes involve replacement of the emulated old prettyprinter
97    interface with direct use of the SML/NJ Lib PP library, and fixing
98    of a couple of bugs (895, 1186) relating to error messages.  A new
99    prettyprinter for ast datatypes (Elaborator/print/ppast.{sig,sml})
100    has been added.
101    
102    ----------------------------------------------------------------------
103    Name: Matthias Blume (blume@tti-c.org)
104    Date: 2003/08/11 15:45:00 CDT
105    Tag: blume-20030811-windows
106    Description:
107    
108    Version number bumped to 110.42.9.  NEW BOOTFILES!!!
109    
110        http://smlnj.cs.uchicago.edu/dist/working/110.42.9/
111    
112    This patch restores SML/NJ's ability to run under win32.  There are a
113    number of changes, including fixes for several bugs that had gone
114    unnoticed until now:
115    
116      - uname "CYGWIN_NT*" is recognized as win32 (This is relevant only when
117        trying to run the win32 version from within cygwin.)
118    
119      - There are a number of simple .bat scripts that substitute for their
120        corresponding Unix shell-scripts.  (See below.)
121    
122      - The internals of ml-build have been modified slightly.  The main
123        difference is that instead of calling ".link-sml" (or link-sml.bat)
124        using OS.Process.system, the ML process delegates this task back
125        to the script.  Otherwise problems arise in mixed environments such
126        as Cygwin where scripts look and work like Unix scripts, but
127        where OS.Process.system cannot run them.
128    
129      - In CM, the srcpath pickler used native pathname syntax -- which
130        is incorrect in the case of cross-compilation.  The new pickle format
131        is independent of platform-specific naming conventions.
132    
133      - Path configuration files (such as lib/pathconfig) can now choose
134        between native and standard syntax.  Placing a line of the form
135    
136            standard!
137    
138        into the file causes all subsequent paths to be interpreted using
139        CM standard pathname syntax (= Unix conventions); a line
140    
141            native!
142    
143        switches back to native style.  This was needed so that
144        path config files can be written portably, see src/system/pathconfig.
145    
146      - Runtime system:
147    
148          - win32-filesys.c:  get_file_time and set_file_time now
149            access modification time, not creation time.
150    
151          - I/O code made aware of new array representation.
152    
153          - Bug fixes in X86.prim.masm.
154    
155       - src/system/makeml made aware of win32. (For use under cygwin
156            and other Unix-environments for windows.)
157    
158       - In Basis, fixed off-by-one error in win32-io.sml (function vecF)
159         which caused BinIO.inputAll to fail consistently.
160    
161    .bat scripts:
162    
163       Windows .bat scripts assume that SMLNJ_HOME is defined.
164    
165       - sml.bat, ml-yacc.bat, ml-lex.bat:  Driver scripts for standalone
166         applications (sml, ml-yacc, ml-lex).
167       - ml-build.bat: analogous to ml-build.
168       - config\install.bat:  Analogous to config/install.sh.  This requires
169         that SMLNJ_HOME is set and that Microsoft Visual C is ready to use.
170         (nmake etc. must be on the path, and vcvars32 must have been run.)
171         Moreover, sources for ml-lex and ml-yacc need to exist under src,
172         and the bootfile hierarchy must have been unpacked under
173         sml.boot.x86-win32.
174         The script is very primitive and does a poor job at error checking.
175         It only installs the base system, ml-lex, and ml-yacc.  No other
176         libraries are being installed (i.e., you get only those that
177         are part of the compiler.)
178       - link-sml.bat:  analogous to .link-sml, but not currently used
179    
180    Unrelated bug fixes:
181    
182      - ml-nlffigen now exports structures ST_* corresponding to incomplete
183        types.
184      - Added getDevice to PP/src/pp-debug-fn.sml.  (Would not compile
185        otherwise.)
186    
187    ----------------------------------------------------------------------
188    Name: Dave MacQueen (macqueen@cs.uchicago.edu)
189    Date: 2003/06/17
190    Tag: macqueen-20030617-bug895
191    Description:
192    
193    Modified compiler/Elaborator/print/pptype.sml to fix bug 895.
194    Tag will be used for new development branch (mcz-branch) for
195    use by MacQueen, (Lucasz) Zairek, and (George) Cao at uchicago.
196    
197    ----------------------------------------------------------------------
198    Name: Matthias Blume (blume@tti-c.org)
199    Date: 2003/05/27 16:55:00 CDT
200    Tag: blume-20030527-polyeq
201    Description:
202    
203    Tried to eliminated most cases of polymorphic equality.
204    
205    ----------------------------------------------------------------------
206    Name: Matthias Blume (blume@tti-c.org)
207    Date: 2003/05/21 17:45:00 CDT
208    Tag: blume-20030517-complete
209    Description:
210    
211    Two changes:
212    
213      1. Added a flag for controlling whether non-exhaustive bindings will
214         be treated as errors (default is false).
215      2. Cleaned up the *entire* source tree so that CMB.make goes through
216         without a single non-exhaustive match- or bind warning.
217    
218    ----------------------------------------------------------------------
219    Name: Matthias Blume (blume@tti-c.org)
220    Date: 2003/05/17 10:20:00 CDT
221    Tag: blume-20030517-absyn
222    Description:
223    
224    1. Added cases for IF, WHILE, ANDALSO, and ORELSE to Absyn.
225    
226       This mainly affects the quality of error messages.  However, some
227       of the code is now more straightforward than before. (Treatment of
228       the above four constructs in translate.sml is much simpler than
229       the "macro-expansion" that was going on before.  Plus, the mach-
230       compiler no longer gets invoked just to be able to compile an
231       if-expression.)
232    
233    2. The ErrorMsg.Error exception is now caught and absorbed by the
234       interactive loop.
235    
236    ----------------------------------------------------------------------
237    Name: Allen Leung
238    Date: 2003/05/16 13:05:00 CDT
239    Tag: leunga-20030516-cygwin-runtime
240    Description:
241    
242        Ported the runtime system to cygwin, which uses the unix
243    x86-unix bin files.  Missing/buggy features:
244    
245       o getnetbyname, getnetbyaddr: these functions seem to be missing in
246         the Cygwin library.
247       o Ctrl-C handling may be flaky.
248       o Windows system calls and Windows I/O are not supported.
249    
250       A new set of binfiles is located at:
251    
252         http://www.dorsai.org/~leunga/boot.x86-unix.tgz
253    
254       This is only needed for bootstrapping the cygwin version of smlnj.
255       Other x86 versions can use the existing binfiles.
256    
257    ----------------------------------------------------------------------
258    Name: Matthias Blume
259    Date: 2003/04/08 15:42:00 CDT
260    Tag: blume-20030408-listpair
261    Description:
262    
263    1. Added a target 'mlrisc' to installer.
264    
265    2. Added missing elements to structure ListPair.
266    
267    ----------------------------------------------------------------------
268    Name: Allen Leung
269    Date: 2003/01/07 10:40:00 EST
270    Tag: leunga-20030107-int-rem
271    Description:
272    
273    Fixed a bug in Int.rem(x,y) where y is a power of 2 on x86.
274    The arguments to the SUBL instruction were swapped.
275    
276    ----------------------------------------------------------------------
277    Name: Matthias Blume
278    Date: 2002/12/12 16:25:00 EST
279    Tag: blume-20021212-risc-ra
280    Description:
281    
282    Fixed a serious bug in the rewrite code for FP spilling/reloading that
283    sent the RA into an infinite loop when floating point registers get
284    spilled.  (Because of this bug, e.g., nucleic stopped compiling between
285    110.37 and 110.38.)
286    There was another set of potential problems related to the handling of
287    MLRISC annotations (but those did not yet cause real problems, apparently).
288    
289    ----------------------------------------------------------------------
290    Name: Matthias Blume
291    Date: 2002/12/06 22:40:00 EST
292    Tag: blume-20021206-cm-fileid
293    Description:
294    
295    Added a call of SrcPath.sync at the beginning of Parse.parse (in CM).
296    This fixes the problem of CM getting confused by files that suddenly
297    change their identity (e.g., by getting unlinked and recreated by some
298    text editor such as vi).  There might be a better/cheaper/cleaner way
299    of doing this, but for now this will have to do.
300    
301    ----------------------------------------------------------------------
302    Name: Matthias Blume
303    Date: 2002/10/28 09:50:00 EST
304    Tag: blume-20021028-typecheck
305    Description:
306    
307    Exported structure Typecheck from $smlnj/viscomp/core.cm.
308    
309    ----------------------------------------------------------------------
310    Name: Matthias Blume
311    Date: 2002/10/17 09:10:00 EDT
312    Tag: Release_110_42
313    Description:
314    
315    In good old tradition, there has been a slight hiccup so that we have
316    to patch 110.42 after the fact.   The old release tag has been replaced
317    (see below).
318    
319    The change solves a problem with two competing approaches the
320    configuration problem regarding MacOS 10.1 vs. MacOS 10.2 which got in
321    each other's way.
322    
323    This change only affects the runtime system code and the installer script.
324    (No new bootfiles.)
325    
326    ----------------------------------------------------------------------
327    Name: Matthias Blume
328    Date: 2002/10/16 12:00:00 EDT
329    Tag: Release_110_42_removed
330    Description:
331    
332    New working release.  New bootfiles.
333    
334    ----------------------------------------------------------------------
335    Name: Matthias Blume
336    Date: 2002/10/10 13:10:00 EDT
337    Tag: blume-20021010-ppc-divs
338    Description:
339    
340    The mltree operator DIVS must be implemented with an overflow check on
341    the PPC because the hardware indicates divide-by-zero using "overflow" as
342    well.
343    
344    ----------------------------------------------------------------------
345    Name: Matthias Blume
346    Date: 2002/07/23 11:45:00
347    Tag: blume-20020723-smlnj-home
348    Description:
349    
350    Sml now senses the SMLNJ_HOME environment variable.  If this is set,
351    then the bin dir is assumed to be in $SMLNJ_HOME/bin and (unless
352    CM_PATHCONFIG is also set), the path configuration file is assumed
353    to be in $SMLNJ_HOME/lib/pathconfig.  This way one can easily move
354    the entire tree to some other place and everything will "just work".
355    
356    (Companion commands such as ml-build and ml-makedepend also sense this
357    variable.)
358    
359    ----------------------------------------------------------------------
360    Name: Matthias Blume
361    Date: 2002/07/12 21:19:00 EDT
362    Tag: blume-20020712-liveness
363    Description:
364    
365    Exported two useful "step" functions from liveness module (MLRISC).
366    
367    ----------------------------------------------------------------------
368    Name: Matthias Blume
369    Date: 2002/07/05 16:00 EDT
370    Tag: Release_110_41
371    Description:
372    
373    New working release.  New bootfiles.
374    
375    ----------------------------------------------------------------------
376    Name: Matthias Blume
377    Date: 2002/07/05 10:25:00 EDT
378    Tag: blume-20020705-btimp
379    Description:
380    
381    Exported structure BTImp from $smlnj/viscomp/debugprof.cm so that
382    other clients can set up backtracing support.
383    
384    ----------------------------------------------------------------------
385    Name: Matthias Blume
386    Date: 2002/06/25 17:23:00 EDT
387    Tag: blume-20020625-fpmax
388    Description:
389    
390    Fixed a bug in translation of INLMAX (and INLMIN) for the floating-point
391    case.  (The sense of the isNaN test was reversed -- which made min and
392    max always return their first argument.)
393    
394    ----------------------------------------------------------------------
395    Name: Matthias Blume
396    Date: 2002/06/11
397    Tag: blume-20020611-unixpath
398    Description:
399    
400    Back-ported OS.Path.{from,to}UnixPath from idlbasis-devel branch.
401    
402    ----------------------------------------------------------------------
403    Name: Matthias Blume
404    Date: 2002/06/10 16:35:00 EDT
405    Tag: blume-20020610-ieeereal
406    Description:
407    
408    I back-ported my implementation of IEEEReal.fromString from the
409    idlbasis-devel branch so that we can test it.
410    
411    Another small change is that ppDec tries to give more information
412    than just "<sig>" in the case of functors.  However, this code is
413    broken in some mysterious way if the functor's body's signature
414    has not been declared by ascription but gets inferred from the
415    implementation.  This needs fixing...
416    
417    ----------------------------------------------------------------------
418  Name: Matthias Blume  Name: Matthias Blume
419  Date: 2002/05/31  Date: 2002/05/31
420  Tag: blume-20020531-btrace-mode  Tag: blume-20020531-btrace-mode

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