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Diff of /sml/trunk/HISTORY

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revision 1059, Mon Feb 11 17:05:33 2002 UTC revision 1066, Thu Feb 14 16:50:02 2002 UTC
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14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16  Name: Matthias Blume  Name: Matthias Blume
17    Date: 2002/02/14 11:50:00 EST
18    Tag: blume-20020214-quote
19    Description:
20    
21    Added a type 't t_' to tag.sml (in ml-nlffi-lib.cm).  This is required
22    because of the new and improved tag generation scheme.  (Thanks to Allen
23    Leung for pointing it out.)
24    
25    ----------------------------------------------------------------------
26    Name: Lal George
27    Date: 2002/02/14 09:55:27 EST 2002
28    Tag: george-20020214-isabelle-bug
29    Description:
30    
31    Fixed the MLRISC bug sent by Markus Wenzel regarding the compilation
32    of Isabelle on the x86.
33    
34    From Allen:
35    -----------
36     I've found the problem:
37    
38         in ra-core.sml, I use the counter "blocked" to keep track of the
39         true number of elements in the freeze queue.  When the counter goes
40         to zero, I skip examining the queue.  But I've messed up the
41         bookkeeping in combine():
42    
43             else ();
44             case !ucol of
45               PSEUDO => (if !cntv > 0 then
46                     (if !cntu > 0 then blocked := !blocked - 1 else ();
47                                        ^^^^^^^^^^^^^^^^^^^^^^^
48                      moveu := mergeMoveList(!movev, !moveu)
49                     )
50                  else ();
51    
52         combine() is called to coalesce two nodes u and v.
53         I think I was thinking that if the move counts of u and v are both
54         greater than zero then after they are coalesced then one node is
55         removed from the freeze queue.  Apparently I was thinking that
56         both u and v are of low degree, but that's clearly not necessarily true.
57    
58    
59    02/12/2002:
60        Here's the patch.  HOL now compiles.
61    
62        I don't know how this impact on performance (compile
63        time or runtime).  This bug caused the RA (especially on the x86)
64        to go thru the potential spill phase when there are still nodes on the
65        freeze queue.
66    
67    
68    
69    
70    ----------------------------------------------------------------------
71    Name: Matthias Blume
72    Date: 2002/02/13 22:40:00 EST
73    Tag: blume-20020213-fptr-rtti
74    Description:
75    
76    Fixed a bug in ml-nlffigen that was introduced with one of the previous
77    updates.
78    
79    ----------------------------------------------------------------------
80    Name: Matthias Blume
81    Date: 2002/02/13 16:41:00 EST
82    Tag: blume-20020213-cmlpq
83    Description:
84    
85    Added new priority queue export symbols (which have just been added to
86    smlnj-lib.cm) to CML's version of smlnj-lib.cm.  (Otherwise CML would
87    not compile and the installer would choke.)
88    
89    ----------------------------------------------------------------------
90    Name: Matthias Blume
91    Date: 2002/02/13 16:15:00 EST
92    Tag: blume-20020213-various
93    Description:
94    
95    1. More tweaks to ml-nlffigen:
96    
97       - better internal datastructures (resulting in slight speedup)
98       - "-match" option requires exact match
99       - "localized" gensym counters (untagged structs/unions nested within
100         other structs/unions or within typedefs get a fresh counter; their
101         tag will be prefixed by a concatenation of their parents' tags)
102       - bug fixes (related to calculation of transitive closure of types
103         to be included in the output)
104    
105    2. Minor Basis updates:
106    
107       - added implementations for List.collate and Option.app
108    
109    ----------------------------------------------------------------------
110    Name: Matthias Blume
111    Date: 2002/02/11 15:55:00 EST
112    Tag: blume-20020211-gensym
113    Description:
114    
115    Added a "-gensym" option to command line of ml-nlffigen.  This can be
116    used to specify a "stem" -- a string that is inserted in all "gensym'd"
117    names (ML structure names that correspond to unnamed C structs, unions,
118    and enums), so that separate runs of ml-nlffigen do not clash.
119    
120    ----------------------------------------------------------------------
121    Name: Matthias Blume
122  Date: 2002/02/11 12:05:00 EST  Date: 2002/02/11 12:05:00 EST
123  Tag: blume-20020211-gensml  Tag: blume-20020211-gensml
124  Description:  Description:

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