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Diff of /sml/trunk/HISTORY

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revision 1058, Fri Feb 8 20:02:56 2002 UTC revision 1067, Fri Feb 15 17:08:17 2002 UTC
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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  Date: 2002/02/08 15:00:00 EST
150  Tag: blume-20020208-uniquepid  Tag: blume-20020208-uniquepid
151  Description:  Description:

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