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revision 601, Thu Apr 6 04:38:14 2000 UTC revision 645, Mon May 15 07:17:30 2000 UTC
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12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14  ----------------------------------------------------------------------  ----------------------------------------------------------------------
15    Name: Matthias Blume
16    Date: 2000/05/15 16:20:00 JST
17    Tag: blume-20000515-lightrebuild
18    Description:
19    
20    1. I added an alternative to "-rebuild" to "makeml".  The difference is
21       that prior to calling CMB.make' the CM-variable "LIGHT" will be
22       defined.  In effect, the command will not build any cross-compiler
23       backends and therefore finish more quickly.
24    
25       The "fixpt" script also takes a "-light" switch to be able to use
26       this new facility while compiling for a fixpoint.
27    
28    2. I replaced all mentions of anchored paths in group owner specifications
29       with simple relative paths (usually starting with "..").
30       The rationale is that a library's internal workings should not be
31       compromised by the lack of some anchor.  (An anchor is necessary
32       for someone who wants to refer to the library by an anchored path,
33       but it should not be necessary to build the same library in the first
34       place.)
35    
36    3. I changed the way CM's tool mechanism determines the shell command
37       string used for things like ml-yacc etc. so that it does not break
38       when CM.Control.implicit_anchors is turned off.
39    
40    ----------------------------------------------------------------------
41    Name: Matthias Blume
42    Date: 2000/05/12 18:20:00 JST
43    Tag: blume-20000512-ml-build
44    Description:
45    
46    Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
47    getting installed properly (by config/install.sh).
48    
49    ----------------------------------------------------------------------
50    Name: Matthias Blume
51    Date: 2000/05/12 17:30:00 JST
52    Tag: blume-20000512-anchors
53    Description:
54    
55    !!! NEW BOOT FILES !!!
56    
57    This change is in preparation of fading out support for "implicitly
58    anchored path names".  I went through all sources and used the
59    explicit (and relatively new) $-notation.  See system/README and the
60    CM manual for more info on this.
61    
62    I also modified the anchoring scheme for some things such as "smlnj",
63    "MLRISC", "cm", etc. to take advantage of the fact that explicit
64    anchors are more expressive: anchor name and first arc do not have to
65    coincide.  This entails the following user-visible change:
66    
67    You have to write $smlnj/foo/bar instead of smlnj/foo/bar.  In
68    particular, when you fire up sml with a command-line argument, say,
69    e.g.:
70    
71       sml '$smlnj/cmb.cm'
72    
73    At the ML toplevel prompt:
74    
75       CM.autoload "$smlnj/cmb.cm";
76    
77    There is also a new controller in CM.Control that can be used to turn
78    off all remaining support for implicit anchors by saying:
79    
80        CM.autoload "$smlnj/
81        #set CM.Control.implicit_anchors false;
82    
83    This causes CM to reject implicitly anchored paths.  This is (for the
84    time being) less permissive than the "final" version where there will
85    be no more such implicit anchors and relative paths will be just that:
86    relative.
87    
88    The next step (version after next version?) will be to make the
89    default for CM.Control.implicit_anchors false.  After the dust has
90    settled, I can then produce the "final" version of this...
91    
92    Note: Since bootstrapping is a bit tricky, I provided new boot files.
93    
94    ----------------------------------------------------------------------
95    Name: Matthias Blume
96    Date: 2000/05/11 16:30:00 JST
97    Tag: blume-20000511-sources
98    Description:
99    
100    The main change is that I added function CM.sources as a generalized
101    version of the earlier CM.makedepend.  This entails the following
102    additional changes:
103    
104      - CM.makedepend has been dropped.
105    
106      - CM manual has been updated.
107    
108      - TOOLS signature and API have been changed.
109    
110    ----------------------------------------------------------------------
111    Name: Allen Leung
112    Date: 2000/05/10 21:17 EDT
113    Tag: leunga-20000510-moby-c--ssa
114    Description:
115    
116      Various bug fixes and new features for C--, Moby and MLRISC optimizations.
117    None of these affect SML/NJ.
118    
119    1. Register Allocation
120    
121        a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
122           This module tries to remove local (i.e. basic block level) redundancies
123           during spilling.
124    
125        b. A new framework for performing region based register allocation.
126           Not yet entirely functional.
127    
128    2. X86
129    
130       a. DefUse for POP was missing the stack pointer [found by Lal]
131       b. Reload for CALL was incorrect in X86Spill [found by John]
132       c. Various fixes in X86Spill so that it can be used correctly for
133          the new spilling module.
134    
135    3. SSA/IR
136    
137       a. New module ir/dj-dataflow.sml implements elimination based
138          data flow analysis.
139    
140    4. MLRiscGen
141    
142       a. Fix for gc type annotation
143    
144    5. MDGen
145    
146       Various fixes for machine description -> ml code translation.  For ssa
147       only.
148    
149    ----------------------------------------------------------------------
150    Name: Allen Leung
151    Date: 2000/05/08 22:17 EDT
152    Tag: leunga-20000508-labexp
153    Description:
154    
155      Fermin has found a few assembly problems with constant expressions
156      generated in LabelExp.  Mostly, the problems involve extra parentheses,
157      which choke on dumb assemblers.  This is his fix.
158    
159    ----------------------------------------------------------------------
160    Name: Dave MacQueen
161    Date: 2000/04/09 14:00 EDT
162    Tag: dbm-20000502-Version_110_28
163    Description:
164    
165    1. Updated src/compiler/TopLevel/main/version.sml to version 110.28
166    
167    2. Updated config/version to 110.28
168    
169    3. Updated config/srcarchiveurl
170    
171    3. New boot files!
172       ftp://ftp.research.bell-labs.com/dist/smlnj/working/110.28/
173    
174    ----------------------------------------------------------------------
175    Name: Matthias Blume
176    Date: 2000/05/01 19:05:00 JST
177    Tag: blume-20000501-noweb
178    Description:
179    
180    A new noweb tool has been added.  The existing system is entirely
181    unaffected by this, but some CM users have asked for renewed noweb
182    support.  Everything is documented in the CM manual.
183    
184    New (plugin) libraries:
185    
186       noweb-tool.cm
187       nw-ext.cm
188    
189    ----------------------------------------------------------------------
190    Name: Dave MacQueen
191    Date: 2000/04/30 12:40PM EDT
192    Tag: dbm-20000430-bug_fixes
193    Description:
194    
195    1. Fix for bug 1498
196       smlnj/src/system/Basis/Implementation/Unsafe/object.sig
197       smlnj/src/system/Basis/Implementation/Unsafe/object.sml
198         added toRealArray function
199       smlnj/src/compiler/MiscUtil/print/ppobj.sml
200         added check for tag Obj.RealArray to array printing case in ppObj
201    
202    2. Fix for bug 1510
203       smlnj/src/compiler/Semant/types/typesutil.sml
204         fixed definition of dummyargs (used by equalTycon) so that
205         dummy args are distinct types
206    
207    ----------------------------------------------------------------------
208    Name: Matthias Blume
209    Date: 2000/04/30 01:00:00 JST
210    Tag: blume-20000430-versions
211    Description:
212    
213    1. CM version numbering added.  This is an implementation of Lal's
214       proposal for adding version numbers and version checking to .cm
215       files.  Lal said that his proposal was just that -- a proposal.
216       For the time being I went ahead and implemented it so that people
217       can comment on it.  Everything is completely backward-compatible
218       (except for the stable library format, i.e., new bootfiles!).
219    
220       As usual, see the CM manual for details.
221    
222    2. An alternative syntax for anchored paths has been implemented.
223       Dave has recently voiced the same concerns that I had when I did
224       this, so there should be some support.  My take is that eventually
225       I will let support for the current syntax (where anchors are
226       "implicit") fade out in favor of the new, explicit syntax.
227       In order to be backward-compatible, both old and new syntax are
228       currently supported.
229    
230       Again, see the CM manual for details.
231    
232    3. Parallel make is trying to be slightly smarter:  When the master
233       process finds a "bottleneck", i.e., when there is only one
234       compilation unit that can be compiled and everybody else is
235       waiting on it, then it will simply compile it directly instead
236       of clumsily telling one of the slaves to do it.
237    
238    4. Support for "unsharing" added.  This is necessary in order to be
239       able to have two different versions of the same library running
240       at the same time (e.g., for trying out a new MLRISC while still
241       having the old MLRISC linked into the current compiler, etc.)
242       See the CM manual.
243    
244    5. Simple "makedepend" functionality added for generating Makefile
245       dependency information.  (This is rather crude at the moment.
246       Expect some changes here in the future.)
247    
248    6. ".fun" added as a recognized suffix for ML files. Also documented
249       explicitly in the manual that the fallback behavior (unknown suffix
250       -> ML file) is not an official feature!
251    
252    7. Small changes to the pickler for stable libraries.
253    
254    8. Several internal changes to CM (for cleanup/improvement).
255    
256    
257    !!!! NEW BINFILES !!!!
258    
259    ----------------------------------------------------------------------
260    Name: Matthias Blume
261    Date: 2000/04/28 17:30:00 JST
262    Tag: blume-20000428-pathconfig
263    Description:
264    
265    1. I changed config/install.sh to remove duplicate entries from the
266       lib/pathconfig file at the end.  Moreover, the final version of
267       lib/pathconfig is sorted alphabetically.  The same (sorting) is done
268       in src/system/installml.
269    
270    2. The config/install.sh script now consistently uses relative
271       pathnames in lib/pathconfig whenever the anchor is in the lib
272       directory.  (So far this was true for the libraries that come
273       pre-compiled and bundled as part of the bootfiles but not for
274       libraries that are compiled by the script itself.)
275    
276    ----------------------------------------------------------------------
277    Name: Matthias Blume
278    Date: 2000/04/26 13:10:00 JST
279    Tag: blume-20000426-fun_suffix
280    Description:
281    
282    Added ".fun" as a recognized file name suffix (for ML code).
283    
284    ----------------------------------------------------------------------
285    Name: Allen Leung
286    Date: 2000/04/25 17:00:00 EST
287    Tag: leunga-20000425-alpha-ra
288    Description:
289    
290    1. Alpha
291    
292        PSEUDOARITH was missing in AlphaRewrite.  This causes an endless loop
293    in C--.
294    
295    2. RA
296    
297       Added a flag "ra-dump-size" to print out the size of the flowgraph
298       and the interference graph.
299    
300    ----------------------------------------------------------------------
301    Name: Dave MacQueen
302    Date: 2000/04/25/
303    Tag: dbm-20000425-mlyacc_doc_examples
304    Description:
305      Updated mlyacc.tex sections 5 and 7 for SML '97 and CM.
306      Updated all three examples in src/ml-yacc/examples to run
307      under 110.* using CM.make.
308    
309    ----------------------------------------------------------------------
310    Name: Allen Leung
311    Date: 2000/04/20 23:04:00 EST
312    Tag: leunga-20000420-ssa-c---stuff
313    Description:
314    
315      This update synchronizes my repository with Yale's.  Most of these
316    changes, however, do not affect SML/NJ at all (the RA is an exception).
317    
318    1. Register Allocator
319    
320       a. An improvement in the interference graph construction:
321          Given a copy
322    
323                s <- t
324    
325          no interference edge between s and t is added for this definition of s.
326    
327       b. I've added two new spill heuristic modules that Fermin and I developed
328          (in the new library RA.cm). These are unused in SML/NJ but maybe
329          useful for others (Moby?)
330    
331    2. X86
332    
333       a. Various fixes in the backend provided by Fermin [C--] and Lal.
334    
335    3. Alpha
336    
337       a. Added the BSR instruction and code generation that goes with it [C--]
338       b. Other fixes too numerous to recount provided by Fermin [C--]
339    
340    4. Regmaps
341    
342       a. The regmaps are not initialized with the identity physical bindings
343          at creation time.  This is unneeded.
344    
345    5. MLRISC Optimizations
346    
347       a. The DJ-Graph module can now compute the iterated dominance frontiers
348          intersects with liveness incrementally in linear time! Woohoo!
349          This is now used in my new SSA construction algorithm.
350    
351       b. THe branch reorganization module is now smarter about linear chains of
352          basic blocks.
353    
354    
355    ----------------------------------------------------------------------
356    Name: Matthias Blume
357    Date: 2000/04/12 13:52:00 JST
358    Tag: blume_main_v110p27_1
359    Description:
360    
361    Changed install.sh script to handle archive files without version number
362    and to use "boot.<arch>-<os>" instead of "sml.boot.<arch>-<os>" for the
363    name of the boot file archive.
364    
365    ----------------------------------------------------------------------
366    Name: Dave MacQueen
367    Date: 2000/04/09 14:00 EDT
368    Tag: dbm-20000410-Version_110_27
369    Description:
370    
371    1. Updated src/compiler/TopLevel/main/version.sml to version 110.27
372    
373    2. Updated src/config/version to 110.27
374    
375    3. New boot files!
376    
377    ----------------------------------------------------------------------
378    Name: Allen Leung
379    Date: 2000/04/09 19:09:00 EST
380    Tag: leunga-20000409-misc
381    Description:
382    
383    1.  Yet another fix for x86 assembly for idivl, imull, mull and friends.
384    
385    2.  Miscellaneous improvements to MLRISC (unused in sml/nj)
386    
387    ----------------------------------------------------------------------
388    Name: Stefan
389    Date: 2000/04/07 10:00:00 EDT
390    Tag: monnier-20000406-branch-handling
391    Description:
392    
393    Improved handling of branches (mostly those generated from
394    polymorphic equality), removed switchoff and changed the
395    default optimization settings (more cpsopt and less flintopt).
396    
397    ----------------------------------------------------------------------
398    Name: Allen Leung
399    Date: 2000/04/06 01:30:00 EST
400    Tag: leunga-20000406-peephole-x86-SSA-2
401    Description:
402    
403       Forgot a few files.
404    
405    ----------------------------------------------------------------------
406  Name: Allen Leung  Name: Allen Leung
407  Date: 2000/04/06 00:36:00 EST  Date: 2000/04/06 00:36:00 EST
408  Tag: leunga-20000406-peephole-x86-SSA  Tag: leunga-20000406-peephole-x86-SSA

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