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Diff of /sml/trunk/HISTORY

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revision 601, Thu Apr 6 04:38:14 2000 UTC revision 641, Thu May 11 01:16:45 2000 UTC
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13  Description:  Description:
14  ----------------------------------------------------------------------  ----------------------------------------------------------------------
15  Name: Allen Leung  Name: Allen Leung
16    Date: 2000/05/10 21:17 EDT
17    Tag: leunga-20000510-moby-c--ssa
18    Description:
19    
20      Various bug fixes and new features for C--, Moby and MLRISC optimizations.
21    None of these affect SML/NJ.
22    
23    1. Register Allocation
24    
25        a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
26           This module tries to remove local (i.e. basic block level) redundancies
27           during spilling.
28    
29        b. A new framework for performing region based register allocation.
30           Not yet entirely functional.
31    
32    2. X86
33    
34       a. DefUse for POP was missing the stack pointer [found by Lal]
35       b. Reload for CALL was incorrect in X86Spill [found by John]
36       c. Various fixes in X86Spill so that it can be used correctly for
37          the new spilling module.
38    
39    3. SSA/IR
40    
41       a. New module ir/dj-dataflow.sml implements elimination based
42          data flow analysis.
43    
44    4. MLRiscGen
45    
46       a. Fix for gc type annotation
47    
48    5. MDGen
49    
50       Various fixes for machine description -> ml code translation.  For ssa
51       only.
52    
53    ----------------------------------------------------------------------
54    Name: Allen Leung
55    Date: 2000/05/08 22:17 EDT
56    Tag: leunga-20000508-labexp
57    Description:
58    
59      Fermin has found a few assembly problems with constant expressions
60      generated in LabelExp.  Mostly, the problems involve extra parentheses,
61      which choke on dumb assemblers.  This is his fix.
62    
63    ----------------------------------------------------------------------
64    Name: Dave MacQueen
65    Date: 2000/04/09 14:00 EDT
66    Tag: dbm-20000502-Version_110_28
67    Description:
68    
69    1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
70    
71    2. Updated config/version to 110.28
72    
73    3. Updated config/srcarchiveurl
74    
75    3. New boot files!
76       ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
77    
78    ----------------------------------------------------------------------
79    Name: Matthias Blume
80    Date: 2000/05/01 19:05:00 JST
81    Tag: blume-20000501-noweb
82    Description:
83    
84    A new noweb tool has been added.  The existing system is entirely
85    unaffected by this, but some CM users have asked for renewed noweb
86    support.  Everything is documented in the CM manual.
87    
88    New (plugin) libraries:
89    
90       noweb-tool.cm
91       nw-ext.cm
92    
93    ----------------------------------------------------------------------
94    Name: Dave MacQueen
95    Date: 2000/04/30 12:40PM EDT
96    Tag: dbm-20000430-bug_fixes
97    Description:
98    
99    1. Fix for bug 1498
100       smlnj/src/system/Basis/Implementation/Unsafe/object.sig
101       smlnj/src/system/Basis/Implementation/Unsafe/object.sml
102         added toRealArray function
103       smlnj/src/compiler/MiscUtil/print/ppobj.sml
104         added check for tag Obj.RealArray to array printing case in ppObj
105    
106    2. Fix for bug 1510
107       smlnj/src/compiler/Semant/types/typesutil.sml
108         fixed definition of dummyargs (used by equalTycon) so that
109         dummy args are distinct types
110    
111    ----------------------------------------------------------------------
112    Name: Matthias Blume
113    Date: 2000/04/30 01:00:00 JST
114    Tag: blume-20000430-versions
115    Description:
116    
117    1. CM version numbering added.  This is an implementation of Lal's
118       proposal for adding version numbers and version checking to .cm
119       files.  Lal said that his proposal was just that -- a proposal.
120       For the time being I went ahead and implemented it so that people
121       can comment on it.  Everything is completely backward-compatible
122       (except for the stable library format, i.e., new bootfiles!).
123    
124       As usual, see the CM manual for details.
125    
126    2. An alternative syntax for anchored paths has been implemented.
127       Dave has recently voiced the same concerns that I had when I did
128       this, so there should be some support.  My take is that eventually
129       I will let support for the current syntax (where anchors are
130       "implicit") fade out in favor of the new, explicit syntax.
131       In order to be backward-compatible, both old and new syntax are
132       currently supported.
133    
134       Again, see the CM manual for details.
135    
136    3. Parallel make is trying to be slightly smarter:  When the master
137       process finds a "bottleneck", i.e., when there is only one
138       compilation unit that can be compiled and everybody else is
139       waiting on it, then it will simply compile it directly instead
140       of clumsily telling one of the slaves to do it.
141    
142    4. Support for "unsharing" added.  This is necessary in order to be
143       able to have two different versions of the same library running
144       at the same time (e.g., for trying out a new MLRISC while still
145       having the old MLRISC linked into the current compiler, etc.)
146       See the CM manual.
147    
148    5. Simple "makedepend" functionality added for generating Makefile
149       dependency information.  (This is rather crude at the moment.
150       Expect some changes here in the future.)
151    
152    6. ".fun" added as a recognized suffix for ML files. Also documented
153       explicitly in the manual that the fallback behavior (unknown suffix
154       -> ML file) is not an official feature!
155    
156    7. Small changes to the pickler for stable libraries.
157    
158    8. Several internal changes to CM (for cleanup/improvement).
159    
160    
161    !!!! NEW BINFILES !!!!
162    
163    ----------------------------------------------------------------------
164    Name: Matthias Blume
165    Date: 2000/04/28 17:30:00 JST
166    Tag: blume-20000428-pathconfig
167    Description:
168    
169    1. I changed config/install.sh to remove duplicate entries from the
170       lib/pathconfig file at the end.  Moreover, the final version of
171       lib/pathconfig is sorted alphabetically.  The same (sorting) is done
172       in src/system/installml.
173    
174    2. The config/install.sh script now consistently uses relative
175       pathnames in lib/pathconfig whenever the anchor is in the lib
176       directory.  (So far this was true for the libraries that come
177       pre-compiled and bundled as part of the bootfiles but not for
178       libraries that are compiled by the script itself.)
179    
180    ----------------------------------------------------------------------
181    Name: Matthias Blume
182    Date: 2000/04/26 13:10:00 JST
183    Tag: blume-20000426-fun_suffix
184    Description:
185    
186    Added ".fun" as a recognized file name suffix (for ML code).
187    
188    ----------------------------------------------------------------------
189    Name: Allen Leung
190    Date: 2000/04/25 17:00:00 EST
191    Tag: leunga-20000425-alpha-ra
192    Description:
193    
194    1. Alpha
195    
196        PSEUDOARITH was missing in AlphaRewrite.  This causes an endless loop
197    in C--.
198    
199    2. RA
200    
201       Added a flag "ra-dump-size" to print out the size of the flowgraph
202       and the interference graph.
203    
204    ----------------------------------------------------------------------
205    Name: Dave MacQueen
206    Date: 2000/04/25/
207    Tag: dbm-20000425-mlyacc_doc_examples
208    Description:
209      Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
210      Updated all three examples in src/ml-yacc/examples to run
211      under 110.* using CM.make.
212    
213    ----------------------------------------------------------------------
214    Name: Allen Leung
215    Date: 2000/04/20 23:04:00 EST
216    Tag: leunga-20000420-ssa-c---stuff
217    Description:
218    
219      This update synchronizes my repository with Yale's.  Most of these
220    changes, however, do not affect SML/NJ at all (the RA is an exception).
221    
222    1. Register Allocator
223    
224       a. An improvement in the interference graph construction:
225          Given a copy
226    
227                s <- t
228    
229          no interference edge between s and t is added for this definition of s.
230    
231       b. I've added two new spill heuristic modules that Fermin and I developed
232          (in the new library RA.cm). These are unused in SML/NJ but maybe
233          useful for others (Moby?)
234    
235    2. X86
236    
237       a. Various fixes in the backend provided by Fermin [C--] and Lal.
238    
239    3. Alpha
240    
241       a. Added the BSR instruction and code generation that goes with it [C--]
242       b. Other fixes too numerous to recount provided by Fermin [C--]
243    
244    4. Regmaps
245    
246       a. The regmaps are not initialized with the identity physical bindings
247          at creation time.  This is unneeded.
248    
249    5. MLRISC Optimizations
250    
251       a. The DJ-Graph module can now compute the iterated dominance frontiers
252          intersects with liveness incrementally in linear time! Woohoo!
253          This is now used in my new SSA construction algorithm.
254    
255       b. THe branch reorganization module is now smarter about linear chains of
256          basic blocks.
257    
258    
259    ----------------------------------------------------------------------
260    Name: Matthias Blume
261    Date: 2000/04/12 13:52:00 JST
262    Tag: blume_main_v110p27_1
263    Description:
264    
265    Changed install.sh script to handle archive files without version number
266    and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
267    name of the boot file archive.
268    
269    ----------------------------------------------------------------------
270    Name: Dave MacQueen
271    Date: 2000/04/09 14:00 EDT
272    Tag: dbm-20000410-Version_110_27
273    Description:
274    
275    1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
276    
277    2. Updated src/config/version to 110.27
278    
279    3. New boot files!
280    
281    ----------------------------------------------------------------------
282    Name: Allen Leung
283    Date: 2000/04/09 19:09:00 EST
284    Tag: leunga-20000409-misc
285    Description:
286    
287    1.  Yet another fix for x86 assembly for idivl, imull, mull and friends.
288    
289    2.  Miscellaneous improvements to MLRISC (unused in sml/nj)
290    
291    ----------------------------------------------------------------------
292    Name: Stefan
293    Date: 2000/04/07 10:00:00 EDT
294    Tag: monnier-20000406-branch-handling
295    Description:
296    
297    Improved handling of branches (mostly those generated from
298    polymorphic equality), removed switchoff and changed the
299    default optimization settings (more cpsopt and less flintopt).
300    
301    ----------------------------------------------------------------------
302    Name: Allen Leung
303    Date: 2000/04/06 01:30:00 EST
304    Tag: leunga-20000406-peephole-x86-SSA-2
305    Description:
306    
307       Forgot a few files.
308    
309    ----------------------------------------------------------------------
310    Name: Allen Leung
311  Date: 2000/04/06 00:36:00 EST  Date: 2000/04/06 00:36:00 EST
312  Tag: leunga-20000406-peephole-x86-SSA  Tag: leunga-20000406-peephole-x86-SSA
313  Description:  Description:

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