Home My Page Projects Code Snippets Project Openings SML/NJ
Summary Activity Forums Tracker Lists Tasks Docs Surveys News SCM Files

SCM Repository

[smlnj] Diff of /sml/trunk/HISTORY
ViewVC logotype

Diff of /sml/trunk/HISTORY

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 635, Tue May 2 15:09:12 2000 UTC revision 652, Tue Jun 6 02:14:56 2000 UTC
# Line 12  Line 12 
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14  ----------------------------------------------------------------------  ----------------------------------------------------------------------
15    Name: Matthias Blume
16    Date: 2000/06/06 11:15:00 JST
17    Tag: blume-20000606-lazierpickle
18    Description:
19    
20    !!!! NEW BOOT FILES !!!!
21    
22    * The main purpose of this update is to make library pickles lazier in
23    order to reduce the initial space penalty for autoloading a library.
24    As a result, it is now possible to have $smlnj/compiler.cm
25    pre-registered.  This should take care of the many complaints or
26    inquiries about missing structure Compiler.  This required changes to
27    CM's internal data structures and small tweaks to some algorithms.
28    
29    As a neat additional effect, it is no longer necessary (for the sake
30    of lean heap image files) to distinguish between a "minimal" CM and a
31    "full" CM.  Now, there is only one CM (i.e., the "full" version:
32    $smlnj/cm.cm aka $smlnj/cm/full.cm), and it is always available at the
33    interactive top level. ($smlnj/cm/minimal.cm is gone.)
34    
35    To make the life of compiler-hackers easier, "makeml" now also
36    pre-registers $smlnj/cmb.cm (aka $smlnj/cmb/current.cm).  In other
37    words, after you bootstrap a new sml for the first time, you will not
38    have to autoload $smlnj/cmb.cm again afterwards.  (The first time
39    around you will still have to do it, though.)
40    
41    * A second change consists of major updates to the CM manual.  There
42    are now several appendices with summary information and also a full
43    specification of the CM description file syntax.
44    
45    * In directory src/system I added the script "allcross".  This script
46    invokes sml and cross-compiles the compiler for all supported
47    architectures.  (Useful when providing a new set of boot files.)
48    
49    * There seems to be a latent bug in my "lazy pickles" mechanism.  I
50    added a small tweak to pickle-util.sml to work around this problem,
51    but it is not a proper fix yet.  I will investigate further.  (The
52    effect of the bug was an inflation of library pickle size.)
53    
54    * Version number increased to 110.28.1 (to avoid compatibility problems).
55    
56    ----------------------------------------------------------------------
57    Name: Allen Leung
58    Date: 2000/05/25 17:28 EDT
59    Tag: leunga-20000525-ra
60    Description:
61    
62      Fixed a bug in freezing phase of the register allocator.
63    
64    ----------------------------------------------------------------------
65    Name: Allen Leung
66    Date: 2000/05/15 22:53 EDT
67    Tag: leunga-20000515-alpha-x86-ra
68    Description:
69    
70      1. Alpha
71    
72          Slight cleanup.  Removed the instruction SGNXL
73    
74      2. X86
75    
76          Added the following instructions to the instruction set:
77    
78            ROLx, RORx,
79            BTx, BTSx, BTLx, BTRx,
80            XCHGx, and variants with the LOCK prefix
81    
82      3. Register Allocation
83    
84          The module ra-rewrite-with-renaming has been improved.
85    
86      These have no effect on SML/NJ.
87    
88    ----------------------------------------------------------------------
89    Name: Matthias Blume
90    Date: 2000/05/15 16:20:00 JST
91    Tag: blume-20000515-lightrebuild
92    Description:
93    
94    1. I added an alternative to "-rebuild" to "makeml".  The difference is
95       that prior to calling CMB.make' the CM-variable "LIGHT" will be
96       defined.  In effect, the command will not build any cross-compiler
97       backends and therefore finish more quickly.
98    
99       The "fixpt" script also takes a "-light" switch to be able to use
100       this new facility while compiling for a fixpoint.
101    
102    2. I replaced all mentions of anchored paths in group owner specifications
103       with simple relative paths (usually starting with "..").
104       The rationale is that a library's internal workings should not be
105       compromised by the lack of some anchor.  (An anchor is necessary
106       for someone who wants to refer to the library by an anchored path,
107       but it should not be necessary to build the same library in the first
108       place.)
109    
110    3. I changed the way CM's tool mechanism determines the shell command
111       string used for things like ml-yacc etc. so that it does not break
112       when CM.Control.implicit_anchors is turned off.
113    
114    ----------------------------------------------------------------------
115    Name: Matthias Blume
116    Date: 2000/05/12 18:20:00 JST
117    Tag: blume-20000512-ml-build
118    Description:
119    
120    Fixed a bug in config/_ml-build that prevented ml-yacc and ml-lex from
121    getting installed properly (by config/install.sh).
122    
123    ----------------------------------------------------------------------
124    Name: Matthias Blume
125    Date: 2000/05/12 17:30:00 JST
126    Tag: blume-20000512-anchors
127    Description:
128    
129    !!! NEW BOOT FILES !!!
130    
131    This change is in preparation of fading out support for "implicitly
132    anchored path names".  I went through all sources and used the
133    explicit (and relatively new) $-notation.  See system/README and the
134    CM manual for more info on this.
135    
136    I also modified the anchoring scheme for some things such as "smlnj",
137    "MLRISC", "cm", etc. to take advantage of the fact that explicit
138    anchors are more expressive: anchor name and first arc do not have to
139    coincide.  This entails the following user-visible change:
140    
141    You have to write $smlnj/foo/bar instead of smlnj/foo/bar.  In
142    particular, when you fire up sml with a command-line argument, say,
143    e.g.:
144    
145       sml '$smlnj/cmb.cm'
146    
147    At the ML toplevel prompt:
148    
149       CM.autoload "$smlnj/cmb.cm";
150    
151    There is also a new controller in CM.Control that can be used to turn
152    off all remaining support for implicit anchors by saying:
153    
154        CM.autoload "$smlnj/
155        #set CM.Control.implicit_anchors false;
156    
157    This causes CM to reject implicitly anchored paths.  This is (for the
158    time being) less permissive than the "final" version where there will
159    be no more such implicit anchors and relative paths will be just that:
160    relative.
161    
162    The next step (version after next version?) will be to make the
163    default for CM.Control.implicit_anchors false.  After the dust has
164    settled, I can then produce the "final" version of this...
165    
166    Note: Since bootstrapping is a bit tricky, I provided new boot files.
167    
168    ----------------------------------------------------------------------
169    Name: Matthias Blume
170    Date: 2000/05/11 16:30:00 JST
171    Tag: blume-20000511-sources
172    Description:
173    
174    The main change is that I added function CM.sources as a generalized
175    version of the earlier CM.makedepend.  This entails the following
176    additional changes:
177    
178      - CM.makedepend has been dropped.
179    
180      - CM manual has been updated.
181    
182      - TOOLS signature and API have been changed.
183    
184    ----------------------------------------------------------------------
185    Name: Allen Leung
186    Date: 2000/05/10 21:17 EDT
187    Tag: leunga-20000510-moby-c--ssa
188    Description:
189    
190      Various bug fixes and new features for C--, Moby and MLRISC optimizations.
191    None of these affect SML/NJ.
192    
193    1. Register Allocation
194    
195        a. A new ra spilling module (ra/ra-spill-with-renaming) is implemented.
196           This module tries to remove local (i.e. basic block level) redundancies
197           during spilling.
198    
199        b. A new framework for performing region based register allocation.
200           Not yet entirely functional.
201    
202    2. X86
203    
204       a. DefUse for POP was missing the stack pointer [found by Lal]
205       b. Reload for CALL was incorrect in X86Spill [found by John]
206       c. Various fixes in X86Spill so that it can be used correctly for
207          the new spilling module.
208    
209    3. SSA/IR
210    
211       a. New module ir/dj-dataflow.sml implements elimination based
212          data flow analysis.
213    
214    4. MLRiscGen
215    
216       a. Fix for gc type annotation
217    
218    5. MDGen
219    
220       Various fixes for machine description -> ml code translation.  For ssa
221       only.
222    
223    ----------------------------------------------------------------------
224    Name: Allen Leung
225    Date: 2000/05/08 22:17 EDT
226    Tag: leunga-20000508-labexp
227    Description:
228    
229      Fermin has found a few assembly problems with constant expressions
230      generated in LabelExp.  Mostly, the problems involve extra parentheses,
231      which choke on dumb assemblers.  This is his fix.
232    
233    ----------------------------------------------------------------------
234  Name: Dave MacQueen  Name: Dave MacQueen
235  Date: 2000/04/09 14:00 EDT  Date: 2000/04/09 14:00 EDT
236  Tag: dbm-20000502-Version_110_28  Tag: dbm-20000502-Version_110_28

Legend:
Removed from v.635  
changed lines
  Added in v.652

root@smlnj-gforge.cs.uchicago.edu
ViewVC Help
Powered by ViewVC 1.0.0