Diff of /sml/trunk/HISTORY

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	revision 758, Fri Dec 22 04:12:36 2000 UTC	revision 826, Wed May 9 20:32:17 2001 UTC
#	Line 11	Line 11
11	Date:	Date:
12	Tag: <post-commit CVS tag>	Tag: <post-commit CVS tag>
13	Description:	Description:
14
15		----------------------------------------------------------------------
16		Name: Matthias Blume
17		Date: 2001/05/09 16:35:00 EDT
18		Tag: blume-20010509-cpscontract
19		Description:
20
21		Fixed a bug in the accounting code in cpsopt/contract.sml.  (The
22		wrapper/unwrapper elimination did not decrement usage counts and some
23		dead variables got overlooked by the dead-up logic.)
24
25		----------------------------------------------------------------------
26		Name: Lal George
27		Date: 2001/05/08  17:26:09 EDT
28		Tag: george-20010508-omit-frameptr
29		Description:
30
31		Changes to implement the omit-frame-pointer optimization to support
32		raw C calls. For now, there is only support on the Intel x86, but
33		other architectures will follow as more experience is gained with this.
34
35
36		----------------------------------------------------------------------
37		Name: Matthias Blume
38		Date: 2001/05/07 14:40:00 EDT
39		Tag: blume-20010507-proxies
40		Description:
41
42		I made into "proxy libraries" all libraries that qualify for such a
43		change.  (A qualifying library is a library that has another library or
44		groups as its sole member and repeats that member's export list
45		verbatim.  A proxy library avoids this repetition by omitting its export
46		list, effectively inheriting the list that its (only) member exports.
47		See the CM manual for more explanation.)
48		The main effect is that explicit export lists for these libraries
49		do not have to be kepts in sync, making maintenance a bit easier.
50
51		I also added copyright notices to many .cm-files.
52
53		Last but not least, I made a new set of bootfiles.
54
55		----------------------------------------------------------------------
56		Name: Matthias Blume
57		Date: 2001/05/04 17:00:00 EDT
58		Tag: blume-20010504-cm-lsplit
59		Description:
60
61		0. John merged pending changes to $/smlnj-lib.cm
62
63		1. Allen's previous change accidentally backed out of one of Lal's
64		earlier changes.  I undid this mistake (re-introducing Lal's change).
65
66		2. I used the new topOrder' function from graph-scc.sml (from $/smlnj-lib.cm)
67		within the compiler where applicable.  There is some code simplification
68		because of that.
69
70		3. The "split" phase (in FLINT) is now part of the default list of phases.
71		Compiler.Control.LambdaSplitting.* can be used to globally control the
72		lambda-splitting (cross-module-inlining) engine.  In addition to that,
73		it can now also be controlled on a per-source basis: CM has been taught
74		a new tool parameter applicable to ML source files.
75
76		- To turn lambda-splitting off completely:
77		local open Compiler.Control.LambdaSplitting in
78		val _ = set Off
79		end
80		- To make "no lambda-splitting" the global default (but allow per-source
81		overriding); this is the initial setting:
82		local open Compiler.Control.LambdaSplitting in
83		val _ = set (Default NONE)
84		end
85		- To make "lambda-splitting with aggressiveness a" the global default
86		(and allow per-source overriding):
87		local open Compiler.Control.LambdaSplitting in
88		val _ = set (Default (SOME a))
89		end
90
91		- To turn lambda-splitting off for a given ML souce file (say: a.sml)
92		write (in the respective .cm-file):
93		a.sml (lambdasplitting:off)
94		- To turn lambda-splitting for a.sml on with minimal aggressiveness:
95		a.sml (lambdasplitting:on)
96		- To turn lambda-splitting for a.sml on with aggressiveness <a> (where
97		<a> is a decimal non-negative integer):
98		a.sml (lambdasplitting:<a>)
99		- To turn lambda-splitting for a.sml on with maximal aggressiveness:
100		a.sml (lambdasplitting:infinity)
101		- To use the global default for a.sml:
102		a.sml (lambdasplitting:default)
103		or simply
104		a.sml
105
106		----------------------------------------------------------------------
107		Name: Allen Leung
108		Date: 2001/05/04 01:57:00 EDT
109		Tag: leunga-20010504-sync
110		Description:
111
112		MLRISC features.
113
114		1. Fix to CMPXCHG instructions.
115		2. Changed RA interface to allow annotations in callbacks.
116		3. Added a new method to the stream interface to allow annotations updates.
117
118		----------------------------------------------------------------------
119		Name: Matthias Blume
120		Date: 2001/05/01 11:45:00 EDT
121		Tag: blume-20010501-pcedittmp
122		Description:
123
124		Changed install.sh to use the current working directory instead of
125		/usr/tmp for a temporary file (pcedittmp).  The previous choice
126		of /usr/tmp caused trouble with MacOS X because of file premission
127		problems.
128
129		----------------------------------------------------------------------
130		Name: Matthias Blume
131		Date: 2001/04/20 11:10:00 EDT
132		Tag: blume-20010420-inMLflag
133		Description:
134
135		- added vp_limitPtrMask to vproc-state.h
136		(for use by the raw-C-calls mechanism to implement proper interrupt
137		handling)
138		- made the ML compiler aware of various data-structure offsets so it
139		can generate code for accessing the vp_inML flag and vp_limitPtrMask
140		- tweaked mlriscGen.sml to have it emit interrupt-handling code for
141		raw C-calls
142
143		----------------------------------------------------------------------
144		Name: Lal George
145		Date: 2001/04/20 09:15:28 EDT
146		Tag: george-20010420-macosX
147		Description:
148
149		- Changes to port to Mac OS X; Darwin.
150
151		- In the process I found that sqrt was broken on the PPC, because the
152		fsqrt instruction is not implemented.
153
154		----------------------------------------------------------------------
155		Name: Matthias Blume
156		Date: 2001/04/18 12:45:00 EDT
157		Tag: blume-20010418-ccalls
158		Description:
159
160		- fixed two off-by-4 errors in the x86-specific c-calls implementation
161		(this bug prevented structure arguments containing pointers from being
162		passed correctly)
163		- changed the raw-C-call code in mlriscGen.sml in such a way that
164		structure arguments are represented as a pointer to the beginning
165		of the structure (instead of having a series of synthesized arguments,
166		one for each structure member)
167
168		- made makeml script's verbosity level configurable via environment
169		variable (MAKEML_VERBOSITY)
170
171		- eliminated placeholder implementations for f32l, w16s, i16s, and f32s
172		in rawmem-x86.sml; we are now using the real thing
173
174		----------------------------------------------------------------------
175		Name: Matthias Blume
176		Date: 2001/03/22 16:25:00 EST
177		Tag: blume-20010322-bootfiles
178		Description:
179
180		Created a new set of bootfiles (for your automatic installation convenience).
181
182		----------------------------------------------------------------------
183		Name: Matthias Blume
184		Date: 2001/03/22 15:10:00 EST
185		Tag: blume-20010322-rawmem-parcm
186		Description:
187
188		1. All "raw memory access" primitives for the new FFI are implemented now
189		(at least on the x86).
190		2. Some further cleanup of CM's parallel make mechanism.
191
192		----------------------------------------------------------------------
193		Name: Matthias Blume
194		Date: 2001/03/19 17:53:00 EST
195		Tag: blume-20010319-parallel
196		Description:
197
198		Parallel make (using compile servers) now works again.
199
200		To this end, CM.stabilize and CMB.make have been modified to work in
201		two passes when compile servers are attached:
202		1. Compile everything, do not perform stabilization; this pass
203		uses compile servers
204		2. Stabilize everything; this pass does not use compile servers
205		If there are no compile servers, the two passes are combined into one
206		(as before).  Splitting the passes increases the inherent parallelism
207		in the dependency graph because the entire graph including all
208		libraries is available at the same time.  This, in turn, improves
209		server utilization.  The downside is that the master process will
210		have to do some extra work after compilation is done (because for
211		technical reasons it must re-read all the binfiles during stabilization).
212
213		----------------------------------------------------------------------
214		Name: Matthias Blume
215		Date: 2001/03/16 12:22:00 EST
216		Tag: blume-20010316-bootfiles
217		Description:
218
219		Created a new set of bootfiles (for your automatic installation convenience).
220
221		----------------------------------------------------------------------
222		Name: Matthias Blume
223		Date: 2001/03/16 11:00:00 EST
224		Tag: blume-20010316-MLTREE-fixup
225		Description:
226
227		This is a minor fixup for an (untagged) earlier commit by Allen.
228		(A file was missing).
229
230		----------------------------------------------------------------------
231		Name: Allen Leung
232		Date: Mon Mar  5 18:54:57 EST 2001
233		Tag: leunga-20010305-cut-support
234
235		1. New support for alternative control-flow in MLTREE.
236		Currently we support
237
238		FLOW_TO(CALL ...., [k1,...,kn])
239
240		This is needed for 'cuts to' in C-- and try/handle-like constructs
241		in Moby
242
243		New assembler flag "asm-show-cutsto" to turn on control-flow debugging.
244
245		2. Register Allocator
246
247		Changes in interface [from Fermin, John]
248
249		3. Alpha 8-bit SLL support [Fermin]
250
251		4. All architectures
252
253		A new module (ClusterExpandCopies) for expanding parallel copies.
254
255		----------------------------------------------------------------------
256		Name: Allen Leung
257		Date: 2001/02/27 23:07:00 EST
258		Tag: leunga-20010227-minor-stuff
259
260		1. Alpha bug fix for CMOVNE
261		2. Handle mltree COND(..,FCMP ...,...)
262		3. Bug fix in simplifier
263
264		----------------------------------------------------------------------
265		Name: Matthias Blume
266		Date: 2001/01/30 17:50:00 EST
267		Tag: blume-20010130-sync
268		Description:
269
270		This is just a minor update to sync my devel branch with the main brach.
271		The only visible change is the addition of some README files.
272
273		----------------------------------------------------------------------
274		Name: Matthias Blume
275		Date: 2001/01/12 23:30:00 JST
276		Tag: blume-20010112-bootfiles
277		Description:
278
279		Made a new set of bootfiles that goes with the current state of the
280		repository.
281
282		----------------------------------------------------------------------
283		Name: Matthias Blume
284		Date: 2001/01/12 21:20:00 JST
285		Tag: blume-20010112-sync
286		Description:
287
288		I am just flushing out some minor changes that had accumulated in
289		my private branch in order to sync with the main tree.  (This is
290		mainly because I had CVS trouble when trying to merge _into_ my
291		private branch.)
292
293		Most people should be completely unaffected by this.
294
295		----------------------------------------------------------------------
296		Name: Allen Leung
297		Date: Thu Jan 11 21:03:00 EST 2001
298		Tag: leunga-20010111-labexp=mltree
299		Description:
300
301		1.  Removed the type LabelExp and replace it by MLTree.
302		2.  Rewritten mltree-simplify with the pattern matcher tool.
303		3.  There were some bugs in alpha code generator which would break
304		64-bit code generation.
305		4.  Redo the tools to generate code with the
306		5.  The CM files in MLRISC (and in src/system/smlnj/MLRISC)
307		are now generated by perl scripts.
308
309		----------------------------------------------------------------------
310		Name: Matthias Blume
311		Date: 2001/01/10 21:55:00 JST
312		Tag: blume-20010110-rcc
313		Description:
314
315		The RCC stuff now seems to work (but only on the x86).
316		This required hacking of the c-calls interface (and -implementation) in
317		MLRISC.
318
319		Normal compiler users should be unaffected.
320
321		----------------------------------------------------------------------
322		Name: Matthias Blume
323		Date: 2001/01/09 01:20:00 JST
324		Tag: blume-20010109-rcc
325		Description:
326
327		This is a fairly big patch, flushing out a large number of pending
328		changes that I made to my development copy over the last couple of days.
329
330		Of practical relevance at this moment is a workaround for a pickling
331		bug that Allen ran into the other day.  The cause of the bug itself is
332		still unknown and it might be hard to fix it properly, but the
333		workaround has some merits of its own (namely somewhat reducing pickling
334		overhead for certain libraries).  Therefore, I think this solution should
335		be satisfactory at this time.
336
337		The rest of the changes (i.e., the vast majority) has to do with my
338		ongoing efforts of providing direct support for C function calls from
339		ML.  At the moment there is a new primop "RAW_CCALL", typing magic
340		in types/cproto.sml (invoked from FLINT/trans/translate.sml), a new
341		case in the FLINT CPS datatype (RCC), changes to cps/convert.sml to
342		translate uses of RAW_CCALL into RCC, and changes to mlriscGen.sml to
343		handle RCC.
344
345		The last part (the changes to mlriscGen.sml) are still known to be
346		wrong on the x86 and not implemented on all other architectures.  But
347		the infrastructure is in place. I had to change a few functor
348		signatures in the backend to be able to route the CCalls interface
349		from MLRISC there, and I had to specialize the mltree type (on the
350		x86) to include the necessary extensions. (The extensions themselves
351		were already there and redy to go in MLRISC/x86).
352
353		Everything should be very happy as soon as someone helps me with
354		mlriscGen.sml...
355
356		In any case, nothing of this should matter to anyone as long as the
357		new primop is not being used (which is going to be the case unless you
358		find it where I hid it :). The rest of the compiler is completely
359		unaffected.
360
361		----------------------------------------------------------------------
362		Name: Matthias Blume
363		Date: 2001/01/05 00:30:00 JST
364		Tag: blume-20010105-primops
365		Description:
366
367		Added some experimental support for work that I am doing right now.
368		These changes mostly concern added primops, but there is also a new
369		experimental C library in the runtime system (but currently not enabled
370		anywhere except on Linux/X86).
371
372		In the course of adding primops (and playing with them), I discovered that
373		Zhong's INL_PRIM hack (no type info for certain primops) was, in fact, badly
374		broken.  (Zhong was very right he labeled this stuff as "major gross hack".)
375		To recover, I made type information in INL_PRIM mandatory and changed
376		prim.sml as well as built-in.sml accordingly.  The InLine structure now
377		has complete, correct type information (i.e., no bottom types).
378
379		Since all these changes mean that we need new binfiles, I also bumped the
380		version number to 110.32.1.
381
382		----------------------------------------------------------------------
383		Name: Matthias Blume
384		Date: 2000/12/30 22:10:00 JST
385		Tag: blume-20001230-various
386		Description:
387
388		Added proxy libraries for MLRISC and let MLRISC libraries refer
389		to each other using path anchors.  (See CM manual for explanation.)
390
391		Updated CM documentation.
392
393		Fixed some bugs in CM.
394
395		Implemented "proxy" libraries (= syntactic sugar for CM).
396
397		Added "-quiet" option to makeml and changed runtime system accordingly.
398
399		Added cleanup handler for exportML to reset timers and compiler stats.
400
401		----------------------------------------------------------------------
402		Name: Lal George
403		Date: 2000/12/22 22:22:58 EST 2000
404		Tag: Release_110_32
405		Description:
406
407		Infinite precision used throughout MLRISC.
408		see MLRISC/mltree/machine-int.sig
409
410		----------------------------------------------------------------------
411		Name: Matthias Blume
412		Date: 2000/12/22 23:16:00 JST
413		Tag: blume-20001222-warn
414		Description:
415
416		Corrected wording and formatting of some CM warning message which I
417		broke in my previous patch.
418
419		----------------------------------------------------------------------
420		Name: Matthias Blume
421		Date: 2000/12/22 21:20:00 JST
422		Tag: blume-20001222-anchorenv
423		Description:
424
425		Fixed CM's handling of anchor environments in connection with CMB.make.
426
427	----------------------------------------------------------------------	----------------------------------------------------------------------
428	Name: Matthias Blume	Name: Matthias Blume
429	Date: 2000/12/22 13:15:00 JST	Date: 2000/12/22 13:15:00 JST

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