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Diff of /sml/trunk/HISTORY

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revision 1044, Mon Jan 28 21:36:08 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
150    Tag: blume-20020208-uniquepid
151    Description:
152    
153    0. Version number has been bumped to 110.38.1.  NEW BOOTFILES!!!
154    
155    1. The installer (config/install.sh) has gotten smarter:
156    
157         - Configuration options are a bit easier to specify now
158           (in config/targets).
159         - Bug in recognizing .tar.bz2 files fixed.
160         - Installer automatically resolves dependencies between
161           configuration options (e.g., if you ask for eXene, you will
162           also get cml -- regardless whether you asked for it or not).
163         - Installer can run in "quieter mode" by setting the environment
164           variable INSTALL_QUIETLY to "true".  "Quieter" does not mean
165           "completely silent", though.
166         - Build HashCons library as part of smlnj-lib.
167    
168    2. A new scheme for assigning persistent identifiers to compilation
169       units (and, by extension, to types etc.) has been put into place.
170       This fixes a long-standing bug where types and even dynamic values
171       can get internally confused, thereby compromising type safety
172       (abstraction) and dynamic correctness.  See
173    
174         http://cm.bell-labs.com/cm/cs/who/blume/pid-confusion.tgz
175    
176       for an example of how things could go wrong until now.
177    
178       The downside of the new scheme is that pids are not quite as
179       persistent as they used to be: CM will generate a fresh pid
180       for every compilation unit that it thinks it sees for the first
181       time.  That means that if you compile starting from a clean, fresh
182       source tree at two different times, you end up with different
183       binaries.
184    
185       Cutoff recompilation, however, has not been compromised because
186       CM keeps pid information in special caches between runs.
187    
188    ----------------------------------------------------------------------
189    Name: Lal George
190    Date: 2002/02/07 15:34:13 EST 2002
191    Tag: <none>
192    Description:
193    
194    Compilers that generate assembly code may produce  global labels
195    whose value is resolved at link time. The various peephole optimization
196    modules did not take this in account.
197    
198    TODO. The Labels.addrOf function should really return an option
199    type so that clients are forced to deal with this issue, rather
200    than an exception being raised.
201    
202    ----------------------------------------------------------------------
203    Name: Lal George
204    Date: 2002/02/06 13:55:02 EST
205    Tag: george-20020206-ra-breakup
206    Description:
207    
208    1. A bug fix from Allen.
209    
210        A typo causes extra fstp %st(0)'s to be generated at compensation
211        edges, which might cause stack underflow traps at runtime.  This
212        occurs in fft where there are extraneous fstps right before the 'into'
213        trap instruction (in this case they are harmless since none of the
214        integers overflow.)
215    
216    2. Pulled out various utility modules that were embedded in the modules
217       of the register allocator. I need these modules for other purposes, but
218       they are not complete enough to put into a library (just yet).
219    ----------------------------------------------------------------------
220    Name: Matthias Blume
221    Date: 2002/01/31 16:05:00 EST
222    Tag: blume-20020131-sparc-ccalls
223    Description:
224    
225    1. C-calls on Sparc needlessly allocated a huge chunk (96 bytes)
226       of extra stack space by mistake.  Fixed.
227    
228    2. Bug in logic of handling of command-line options in ml-nlffigen fixed.
229    
230    ----------------------------------------------------------------------
231    Name: Allen Leung
232    Date: 2002/01/30
233    Tag: leunga-20020130-nowhere-bug-fix
234    Description:
235    
236       MLRISC bug fixes:
237       1. Fixed a bindings computation bug in the 'nowhere' program generator tool.
238       2. MachineInt.fromString was negating its value.
239    
240    ----------------------------------------------------------------------
241    Name: Matthias Blume
242    Date: 2002/01/29
243    Tag: blume-20020129-INSTALL
244    Description:
245    
246    - Added somewhat detailed installation instructions (file INSTALL).
247    - Fixed curl-detection bug in config/install.sh.
248    - It is now possible to select the URL getter using the URLGETTER
249      environment variable:
250    
251          not set / "unknown"      --> automatic detection (script tries wget,
252                                       curl, and lynx)
253          "wget" / "curl" / "lynx" --> use the specified program (script "knows"
254                                       how to properly invoke them)
255          other                    --> use $URLGETTER directly, it must take
256                                       precisely two command-line arguments
257                                       (source URL and destination file name)
258    
259    ----------------------------------------------------------------------
260    Name: Matthias Blume
261    Date: 2002/01/28
262    Tag: blume-20020128-sparc-ccalls
263    Description:
264    
265    - Fixed problem with calculation of "used" registers in sparc-c-calls.
266    - Make use of the allocParam argument in sparc-c-calls.
267    
268    ----------------------------------------------------------------------
269    Name: Matthias Blume
270  Date: 2002/01/28  Date: 2002/01/28
271  Tag: blume-20020128-allocParam  Tag: blume-20020128-allocParam
272  Description:  Description:
# Line 584  Line 837 
837    
838  ----------------------------------------------------------------------  ----------------------------------------------------------------------
839  Name: Matthias Blume  Name: Matthias Blume
 >>>>>>> 1.169  
840  Date: 2001/09/18 15:35:00 EDT  Date: 2001/09/18 15:35:00 EDT
841  Tag: blume-20010918-readme11036  Tag: blume-20010918-readme11036
842  Description:  Description:

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