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Diff of /sml/trunk/HISTORY

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revision 958, Fri Oct 12 03:54:43 2001 UTC revision 986, Wed Nov 21 21:03:17 2001 UTC
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13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2001/11/21 16:10:00 EST
18    Tag: Release_110_37
19    Description:
20    
21    1. Modifications to the SML/NJ code generator and to the runtime system
22       so that code object name strings are directly inserted into code
23       objects at code generation time.  The only business the runtime system
24       has with this is now to read the name strings on occasions.
25       (The encoding of the name string has also changed somewhat.)
26    
27    2. CM now implements a simple "set calculus" for specifying export lists.
28       In particular, it is now possible to refer to the export lists of
29       other libraries/groups/sources and form unions as well as differences.
30       See the latest CM manual for details.
31    
32    3. An separate notion of "proxy" libraries has again be eliminated from
33       CM's model.  (Proxy libraries are now simply a special case of using
34       the export list calculus.)
35    
36    4. Some of the existing libraries now take advantage of the new set
37       calculus.
38       (Notice that not all libraries have been converted because some
39       of the existing .cm-files are supposed to be backward compatible
40       with 110.0.x.)
41    
42    5. Some cleanup in stand-alone programs.  (Don't use "exnMessage" -- use
43       "General.exnMessage"!  The former relies on a certain hook to be
44       initialized, and that often does not happen in the stand-alone case.)
45    
46    ----------------------------------------------------------------------
47    Name: Lal George
48    Date: 2001/11/21  13:56:18 EST
49    Tag: george-2001121-pseudo-ops
50    Description:
51    
52      Implemented a complete redesign of MLRISC pseudo-ops. Now there
53      ought to never be any question of incompatabilities with
54      pseudo-op syntax expected by host assemblers.
55    
56      For now, only modules supporting GAS syntax are implemented
57      but more should follow, such as MASM, and vendor assembler
58      syntax, e.g. IBM as, Sun as, etc.
59    
60    ----------------------------------------------------------------------
61    Name: Matthias Blume
62    Date: 2001/11/14 11:52:00 EST
63    Tag: blume-20011114-srcname
64    Description:
65    
66    1. Routed the name of the current source file to mlriscgen where it
67       should be directly emitted into the code object.  (This last part
68       is yet to be done.)
69    
70    2. Some cleanup of the pgraph code to make it match the proposal that
71       I put out the other day.  (The proposal notwithstanding, things are
72       still in flux here.)
73    
74    ----------------------------------------------------------------------
75    Name: Lal George
76    Date: 2001/11/14 09:44:04 EST
77    Tag:
78    Description:
79    
80      Fix for a backpatching bug reported by Allen.
81    
82      Because the boundary between short and long span-dependent
83      instructions is +/- 128, there are an astounding number of
84      span-dependent instructions whose size is over estimated.
85    
86      Allen came up with the idea of letting the size of span
87      dependent instructions be non-monotonic, for a maxIter
88      number of times, after which the size must be monotonically
89      increasing.
90    
91      This table shows the number of span-dependent instructions
92      whose size was over-estimated as a function of maxIter, for the
93      file Parse/parse/ml.grm.sml:
94    
95         maxIter            # of instructions:
96            10                      687
97            20                      438
98            30                      198
99            40                        0
100    
101      In compiling the compiler, there is no significant difference in
102      compilation speed between maxIter=10 and maxIter=40. Actually,
103      my measurements showed that maxIter=40 was a tad faster than
104      maxIter=10! Also 96% of the  files in the compiler reach a fix
105      point within 13 iterations, so fixing maxIter at 40, while high,
106      is okay.
107    
108    ----------------------------------------------------------------------
109    Name: Matthias Blume
110    Date: 2001/10/31 15:25:00 EST
111    Tag: blume-20011031-pgraph
112    Description:
113    
114    CKIT:
115    * Changed the "Function" constructor of type Ast.ctype to carry optional
116      argument identifiers.
117    * Changed the return type of TypeUtil.getFunction accordingly.
118    * Type equality ignores the argument names.
119    * TypeUtil.composite tries to preserve argument names but gives up quickly
120      if there is a mismatch.
121    
122    installation script:
123    * attempts to use "curl" if available (unless "wget" is available as well)
124    
125    CM:
126    * has an experimental implementation of "portable graphs" which I will
127      soon propose as an implementation-independent library format
128    * there are also new libraries $/pgraph.cm and $/pgraph-util.cm
129    
130    NLFFI-LIB:
131    * some cleanup (all cosmetic)
132    
133    NLFFIGEN:
134    * temporarily disabled the mechanism that suppresses ML output for
135      C definitions whose identifiers start with an underscore character
136    * generate val bindings for enum constants
137    * user can request that only one style (light or heavy) is being used;
138      default is to use both (command-line arguments: -heavy and -light)
139    * fixed bug in handling of function types involving incomplete pointers
140    * generate ML entry points that take record arguments (i.e., using
141      named arguments) for C functions that have a prototype with named
142      arguments
143      (see changes to CKIT)
144    
145    ----------------------------------------------------------------------
146    Name: Allen Leung
147    Date: 2001/10/27 20:34:00 EDT
148    Tag: leunga-20011027-x86-fast-fp-call
149    Description:
150    
151       Fixed the bug described in blume-20010920-slowfp.
152    
153       The fix involves
154          1. generating FCOPYs in FSTP in ia32-svid
155          2. marking a CALL with the appropriate annotation
156    
157    ----------------------------------------------------------------------
158    Name: Matthias Blume
159    Date: 2001/10/16 11:32:00 EDT
160    Tag: blume-20011016-netbsd
161    Description:
162    
163    Underscore patch from Chris Richards (fixing problem with compiling
164    runtime system under recent NetBSD).
165    
166    ----------------------------------------------------------------------
167    Name: Allen Leung
168    Date: 2001/10/12 17:18:32 EDT 2001
169    Tag: leung-20011012-x86-printflowgraph
170    Description:
171    
172    X86RA now uses a valid (instead of dummy) PrintFlowgraph module.
173    
174    ----------------------------------------------------------------------
175  Name: Lal George  Name: Lal George
176  Date: 2001/10/11 23:51:34 EDT  Date: 2001/10/11 23:51:34 EDT
177  Tag: george-20011011-too-many-instrs  Tag: george-20011011-too-many-instrs

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