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revision 890, Thu Jul 19 20:38:56 2001 UTC revision 932, Tue Sep 18 19:35:32 2001 UTC
# Line 13  Line 13 
13  Description:  Description:
14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16    Name: Matthias Blume
17    Date: 2001/09/18 15:35:00 EDT
18    Tag: blume-20010918-readme11036
19    Description:
20    
21    Added README files.
22    
23    ----------------------------------------------------------------------
24    Name: Matthias Blume
25    Date: 2001/09/18 11:45:00 EDT
26    Tag: Release_110_36 (retag)
27    Description:
28    
29    Fixed mistake in config/preloads. Retagged as 110.36.
30    
31    ----------------------------------------------------------------------
32    Name: Matthias Blume
33    Date: 2001/09/18 09:40:00 EDT
34    Tag: Release_110_36_orig (tag changed)
35    Description:
36    
37    New version (110.36).  New bootfiles.
38    
39    ----------------------------------------------------------------------
40    Name: Matthias Blume
41    Date: 2001/09/14 16:15:00 EDT
42    Tag: blume-20010914-x86fastfp
43    Description:
44    
45    John committed some changes that Allen made, in particular a (hopefully)
46    correctly working version of the x86-fp module.
47    
48    I changed the default setting of the Control.MLRISC.getFlag "x86-fast-fp"
49    flag to "true".  Everything seems to compile to a fixpoint ok, and
50    "mandelbrot" speeds up by about 15%.
51    
52    ----------------------------------------------------------------------
53    Name: Matthias Blume
54    Date: 2001/09/13 11:20:00 EDT
55    Tag: blume-20010913-minimal
56    Description:
57    
58    1. Stefan Monnier's patch to fix a miscompilation problem that
59       was brought to light by John Reppy's work on Moby.
60    
61    2. Implemented a minimal "structure Compiler" that contains just
62       "version" and "architecture".  The minimal version will be
63       available when the full version is not.  This is for backward-
64       compatibility with code that wants to test Compiler.version.
65    
66    ----------------------------------------------------------------------
67    Name: Matthias Blume
68    Date: 2001/08/28 14:03:00 EDT
69    Tag: blume-20010828-ml-lex
70    Description:
71    
72    Fix for bug 1581, received from Neophytos Michael.
73    
74    ----------------------------------------------------------------------
75    Name: Matthias Blume
76    Date: 2001/08/27 11:20:00 EDT
77    Tag: blume-20010827-readme11035
78    Description:
79    
80    Fleshed out the README file for 110.35.
81    
82    ----------------------------------------------------------------------
83    Name: Matthias Blume
84    Date: 2001/08/24 17:10:00 EDT
85    Tag: Release_110_35
86    Description:
87    
88    New version number (110.35).  New bootfiles.
89    
90    ----------------------------------------------------------------------
91    Name: Lal George
92    Date: 2001/08/24 13:47:18 EDT 2001
93    Tag: george-20010824-MLRISC-graphs
94    Description:
95    
96     removed clusters from MLRISC completely and replaced with graphs.
97    
98    ----------------------------------------------------------------------
99    Name: Matthias Blume
100    Date: 2001/08/23 17:50:00 EDT
101    Tag: blume-20010823-toplevel
102    Description:
103    
104    - some reorganization of the code that implements various kinds of
105      environments in the compiler (static, dynamic, symbolic, combined)
106    - re-implemented the EnvRef module so that evalStream works properly
107      (if the stream contains references to "use", "CM.make", etc.)
108    - cleaned up evalloop.sml and interact.sml (but they need more cleaning)
109    
110    ----------------------------------------------------------------------
111    Name: Matthias Blume
112    Date: 2001/08/20 15:50 EDT
113    Tag: blume20010820-slipup
114    Description:
115    
116    I forgot to commit a few files.  Here they are...
117    
118    ----------------------------------------------------------------------
119    Name: Matthias Blume
120    Date: 2001/08/20 15:35:00 EDT
121    Tag: blume-20010820-debugprof
122    Description:
123    
124    !!!! NEW BOOTFILES !!!!
125    
126    This is another round of reorganizing the compiler sources.  This
127    time the main goal was to factor out all the "instrumentation"
128    passes (for profiling and backtracing) into their own library.
129    The difficulty was to do it in such a way that it does not depend
130    on elaborate.cm but only on elabdata.cm.
131    
132    Therefore there have been further changes to both elaborate.cm and
133    elabdata.cm -- more "generic" things have been moved from the former
134    to the latter.  As a result, I was forced to split the assignment
135    of numbers indicating "primtyc"s into two portions: SML-generic and
136    SML/NJ-specific.  Since it would have been awkward to maintain,
137    I bit the bullet and actually _changed_ the mapping between these
138    numbers and primtycs.  The bottom line of this is that you need
139    a new set of bin- and bootfiles.
140    
141    I have built new bootfiles for all architectures, so doing a fresh
142    checkout and config/install.sh should be all you need.
143    
144    The newly created library's name is
145    
146        $smlnj/viscomp/debugprof.cm
147    
148    and its sources live under
149    
150        src/compiler/DebugProf
151    
152    ----------------------------------------------------------------------
153    Name: Matthias Blume
154    Date: 2001/08/15 17:15:00 EDT
155    Tag: blume-20010815-compreorg
156    Description:
157    
158    This is a first cut at reorganizing the CM libraries that make up the
159    core of the compiler.  The idea is to separate out pieces that could
160    be used independently by tools, e.g., the parser, the typechecker, etc.
161    
162    The current status is a step in this direction, but it is not quite
163    satisfactory yet.  Expect more changes in the future.
164    
165    Here is the current (new) organization...
166    
167        What used to be $smlnj/viscomp/core.cm is now divided into
168        six CM libraries:
169    
170             $smlnj/viscomp/basics.cm
171                           /parser.cm
172                           /elabdata.cm
173                           /elaborate.cm
174                           /execute.cm
175                           /core.cm
176    
177        The CM files for these libraries live under src/system/smlnj/viscomp.
178        All these libraries are proxy libraries that contain precisely
179        one CM library component.  Here are the locations of the components
180        (all within the src/compiler tree):
181    
182             Basics/basics.cm
183             Parse/parser.cm
184             ElabData/elabdata.cm
185             Elaborator/elaborate.cm
186             Execution/execute.cm
187             core.cm
188    
189         [This organization is the same that has been used already
190         for a while for the architecture-specific parts of the visible
191         compiler and for the old version of core.cm.]
192    
193         As you will notice, many source files have been moved from their
194         respective original locations to a new home in one of the above
195         subtrees.
196    
197         The division of labor between the new libraries is the following:
198    
199             basics.cm:
200                - Simple, basic definitions that pertain to many (or all) of
201                  the other libraries.
202             parser.cm:
203                - The SML parser, producing output of type Ast.dec.
204                - The type family for Ast is also defined and exported here.
205             elabdata.cm:
206                - The datatypes that describe input and output of the elaborator.
207                  This includes types, absyn, and static environments.
208             elaborator.cm:
209                - The SML/NJ type checker and elaborator.
210                  This maps an Ast.dec (with a given static environment) to
211                  an Absyn.dec (with a new static environment).
212                - This libraries implements certain modules that used to be
213                  structures as functors (to remove dependencies on FLINT).
214             execute.cm:
215                - Everything having to do with executing binary code objects.
216                - Dynamic environments.
217             core.cm:
218                - SML/NJ-specific instantiations of the elaborator and MLRISC.
219                - Top-level modules.
220                - FLINT (this should eventually become its own library)
221    
222    Notes:
223    
224    I am not 100% happy with the way I separated the elaborator (and its
225    data structures) from FLINT.  Two instances of the same problem:
226    
227        1. Data structures contain certain fields that carry FLINT-specific
228           information.  I hacked around this using exn and the property list
229           module from smlnj-lib.  But the fact that there are middle-end
230           specific fields around at all is a bit annoying.
231    
232        2. The elaborator calculates certain FLINT-related information.  I tried
233           to make this as abstract as I could using functorization, but, again,
234           the fact that the elaborator has to perform calculations on behalf
235           of the middle-end at all is not nice.
236    
237        3. Having to used exn and property lists is unfortunate because it
238           weakens type checking.  The other alternative (parameterizing
239           nearly *everything*) is not appealing, though.
240    
241    I removed the "rebinding =" warning hack because due to the new organization
242    it was awkward to maintain it.  As a result, the compiler now issues some of
243    these warnings when compiling init.cmi during bootstrap compilation. On
244    the plus side, you also get a warning when you do, for example:
245       val op = = Int32.+
246    which was not the case up to now.
247    
248    I placed "assign" and "deref" into the _Core structure so that the
249    code that deals with the "lazy" keyword can find them there.  This
250    removes the need for having access to the primitive environment
251    during elaboration.
252    
253    ----------------------------------------------------------------------
254    Name: Matthias Blume
255    Date: 2001/08/13
256    Tag: blume-20010813-closures
257    Description:
258    
259    This fix was sent to us by Zhong Shao.  It is supposed to improve the
260    performance of certain loops by avoiding needless closure allocation.
261    
262    ----------------------------------------------------------------------
263    Name: Lal George
264    Date: 2001/07/31 10:03:23 EDT 2001
265    Tag: george-20010731-x86-fmalloc
266    Description: Fixed bug in x86 calls
267    
268        There was a bug where call instructions would mysteriously
269        vanish. The call instruction had to be one that returned
270        a floating point value.
271    
272    ----------------------------------------------------------------------
273  Name: Lal George  Name: Lal George
274  Date: 2001/07/19 16:36:29 EDT 2001  Date: 2001/07/19 16:36:29 EDT 2001
275  Tag: george-20010719-simple-cells  Tag: george-20010719-simple-cells
# Line 2733  Line 2990 
2990       elaborator). There were a lot of changes during my "linkpath" trials       elaborator). There were a lot of changes during my "linkpath" trials
2991       that could have been reverted to their original state but weren't.       that could have been reverted to their original state but weren't.
2992       Please, don't be too harsh on me for messing with this code a bit more       Please, don't be too harsh on me for messing with this code a bit more
2993       than what was strictly necessary...  (I _did_ resist the tempation       than what was strictly necessary...  (I _did_ resist the temptation
2994       of doing any "global reformatting" to avoid an untimely death at       of doing any "global reformatting" to avoid an untimely death at
2995       Dave's hands. :)       Dave's hands. :)
2996    

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