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Diff of /sml/trunk/HISTORY

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revision 1055, Thu Feb 7 20:38:59 2002 UTC revision 1069, Fri Feb 15 21:00:05 2002 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2002/02/15 16:00:00 EST
18    Tag: Release_110_39
19    Description:
20    
21    Working release 110.39.  New bootfiles.
22    
23    ----------------------------------------------------------------------
24    Name: Matthias Blume
25    Date: 2002/02/15 14:17:00 EST
26    Tag: blume-20020215-showbindings
27    Description:
28    
29    Added EnvRef.listBoundSymbols and CM.State.showBindings.  Especially
30    the latter can be useful for exploring what bindings are available at
31    the interactive prompt.  (The first function returns only the list
32    of symbols that are really bound, the second prints those but also the
33    ones that CM's autoloading mechanism knows about.)
34    
35    ----------------------------------------------------------------------
36    Name: Matthias Blume
37    Date: 2002/02/15 12:08:00 EST
38    Tag: blume-20020215-iptrs
39    Description:
40    
41    Two improvements to ml-nlffigen:
42    
43      1. Write files only if they do not exist or if their current contents
44         do not coincide with what's being written.  (That is, avoid messing
45         with the time stamps unless absolutely necessary.)
46    
47      2. Implement a "repository" mechanism for generated files related
48         to "incomplete pointer types".   See the README file for details.
49    
50    ----------------------------------------------------------------------
51    Name: Matthias Blume
52    Date: 2002/02/14 11:50:00 EST
53    Tag: blume-20020214-quote
54    Description:
55    
56    Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm).  This is required
57    because of the new and improved tag generation scheme.  (Thanks to Allen
58    Leung for pointing it out.)
59    
60    ----------------------------------------------------------------------
61    Name: Lal George
62    Date: 2002/02/14 09:55:27 EST 2002
63    Tag: george-20020214-isabelle-bug
64    Description:
65    
66    Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
67    of Isabelle on the x86.
68    
69    From Allen:
70    -----------
71     I've found the problem:
72    
73         in ra-core.sml, I use the counter "blocked" to keep track of the
74         true number of elements in the freeze queue.  When the counter goes
75         to zero, I skip examining the queue.  But I've messed up the
76         bookkeeping in combine():
77    
78             else ();
79             case !ucol of
80               PSEUDO => (if !cntv > 0 then
81                     (if !cntu > 0 then blocked := !blocked - 1 else ();
82                                        ^^^^^^^^^^^^^^^^^^^^^^^
83                      moveu := mergeMoveList(!movev, !moveu)
84                     )
85                  else ();
86    
87         combine() is called to coalesce two nodes u and v.
88         I think I was thinking that if the move counts of u and v are both
89         greater than zero then after they are coalesced then one node is
90         removed from the freeze queue.  Apparently I was thinking that
91         both u and v are of low degree, but that's clearly not necessarily true.
92    
93    
94    02/12/2002:
95        Here's the patch.  HOL now compiles.
96    
97        I don't know how this impact on performance (compile
98        time or runtime).  This bug caused the RA (especially on the x86)
99        to go thru the potential spill phase when there are still nodes on the
100        freeze queue.
101    
102    
103    
104    
105    ----------------------------------------------------------------------
106    Name: Matthias Blume
107    Date: 2002/02/13 22:40:00 EST
108    Tag: blume-20020213-fptr-rtti
109    Description:
110    
111    Fixed a bug in ml-nlffigen that was introduced with one of the previous
112    updates.
113    
114    ----------------------------------------------------------------------
115    Name: Matthias Blume
116    Date: 2002/02/13 16:41:00 EST
117    Tag: blume-20020213-cmlpq
118    Description:
119    
120    Added new priority queue export symbols (which have just been added to
121    smlnj-lib.cm) to CML's version of smlnj-lib.cm.  (Otherwise CML would
122    not compile and the installer would choke.)
123    
124    ----------------------------------------------------------------------
125    Name: Matthias Blume
126    Date: 2002/02/13 16:15:00 EST
127    Tag: blume-20020213-various
128    Description:
129    
130    1. More tweaks to ml-nlffigen:
131    
132       - better internal datastructures (resulting in slight speedup)
133       - "-match" option requires exact match
134       - "localized" gensym counters (untagged structs/unions nested within
135         other structs/unions or within typedefs get a fresh counter; their
136         tag will be prefixed by a concatenation of their parents' tags)
137       - bug fixes (related to calculation of transitive closure of types
138         to be included in the output)
139    
140    2. Minor Basis updates:
141    
142       - added implementations for List.collate and Option.app
143    
144    ----------------------------------------------------------------------
145    Name: Matthias Blume
146    Date: 2002/02/11 15:55:00 EST
147    Tag: blume-20020211-gensym
148    Description:
149    
150    Added a "-gensym" option to command line of ml-nlffigen.  This can be
151    used to specify a "stem" -- a string that is inserted in all "gensym'd"
152    names (ML structure names that correspond to unnamed C structs, unions,
153    and enums), so that separate runs of ml-nlffigen do not clash.
154    
155    ----------------------------------------------------------------------
156    Name: Matthias Blume
157    Date: 2002/02/11 12:05:00 EST
158    Tag: blume-20020211-gensml
159    Description:
160    
161    A quick fix for a problem with GenSML (in the pgraph-util library):
162    Make generation of toplevel "local" optional.  (Strictly speaking,
163    signature definitions within "local" are not legal SML.)
164    
165    Other than that: updates to INSTALL and cm/TODO.
166    
167    ----------------------------------------------------------------------
168    Name: Matthias Blume
169    Date: 2002/02/08 15:00:00 EST
170    Tag: blume-20020208-uniquepid
171    Description:
172    
173    0. Version number has been bumped to 110.38.1.  NEW BOOTFILES!!!
174    
175    1. The installer (config/install.sh) has gotten smarter:
176    
177         - Configuration options are a bit easier to specify now
178           (in config/targets).
179         - Bug in recognizing .tar.bz2 files fixed.
180         - Installer automatically resolves dependencies between
181           configuration options (e.g., if you ask for eXene, you will
182           also get cml -- regardless whether you asked for it or not).
183         - Installer can run in "quieter mode" by setting the environment
184           variable INSTALL_QUIETLY to "true".  "Quieter" does not mean
185           "completely silent", though.
186         - Build HashCons library as part of smlnj-lib.
187    
188    2. A new scheme for assigning persistent identifiers to compilation
189       units (and, by extension, to types etc.) has been put into place.
190       This fixes a long-standing bug where types and even dynamic values
191       can get internally confused, thereby compromising type safety
192       (abstraction) and dynamic correctness.  See
193    
194         http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
195    
196       for an example of how things could go wrong until now.
197    
198       The downside of the new scheme is that pids are not quite as
199       persistent as they used to be: CM will generate a fresh pid
200       for every compilation unit that it thinks it sees for the first
201       time.  That means that if you compile starting from a clean, fresh
202       source tree at two different times, you end up with different
203       binaries.
204    
205       Cutoff recompilation, however, has not been compromised because
206       CM keeps pid information in special caches between runs.
207    
208    ----------------------------------------------------------------------
209  Name: Lal George  Name: Lal George
210  Date: 2002/02/07 15:34:13 EST 2002  Date: 2002/02/07 15:34:13 EST 2002
211  Tag: <none>  Tag: <none>

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