Annotation of /sml/trunk/src/compiler/FLINT/ChangeLog

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1 :	monnier	540	2000-02-18 Stefan Monnier <monnier@cs.yale.edu>
2 :
3 :			* opt/switchoff.sml (inside/LET): use IH_MAYBE instead of IH_ALWAYS.
4 :
5 :	monnier	529	2000-01-31 Stefan Monnier <monnier@cs.yale.edu>
6 :
7 :			* opt/fcontract.sml (fcLet/cassoc): don't do a second pass over the output
8 :			of the rewrite. It leads to quadratic behavior for `x1 andalso x2 ...'.
9 :
10 :	monnier	489	1999-07-10 Stefan Monnier <monnier@cs.yale.edu>
11 :
12 :			* opt/split.sml: don't burp when you can't split.
13 :
14 :	monnier	220	1999-03-08 Stefan Monnier <monnier@cs.yale.edu>
15 :
16 :			* opt/split.sml (sexp): don't split HANDLE (it's incorrect).
17 :			(funeffect): embryo to detect side-effect free APPs (non-functional).
18 :			(splitThreshold): to put a cap on inlining.
19 :	monnier	523	(stfn): don't bother splitting inlinable TFNs.
20 :	monnier	220
21 :			* main/control.sml (splitThreshold): new var.
22 :
23 :			* opt/specialize (kBnd): be more conservative with nvars (it's too
24 :			conservative, now).
25 :
26 :			* opt/fixfix.sml (curry): fixed bug when uncurrying cooked functions.
27 :
28 :			* opt/fcontract.sml (fcFun): fix bug when undertaking mut-rec functions.
29 :
30 :			* main/flintcomp.sml: added `recover' to help debugging.
31 :			updated the fold to allow extraction of Fi and return it at the end.
32 :
33 :			* lsplit/ls-inline.sml (oneBranch): fixed the wrapper function.
34 :
35 :			* flint/flintutil.sml (freevars): forgot to count the arg of SWITCH.
36 :
37 :			* flint/flint.sig: added a tfkind to TFN (only inlining for now).
38 :
39 :			* main/control.sml: new file. Moved from TopLevel/viscomp/control.sml
40 :
41 :			1999-03-04 Stefan Monnier <monnier@cs.yale.edu>
42 :
43 :			* kernel/ltyextern.sml (tnarrow), reps/{reify,rttype,typeoper}.sml:
44 :			flatten arguments when reifying them since the pretty-printer doesn't
45 :			know how to deal with flattened reified TFNs.
46 :
47 :			1999-03-02 Stefan Monnier <monnier@cs.yale.edu>
48 :
49 :			* kernel/ltyextern.sml (tnarrow), reps/{reify,rttype,typeoper}.sml:
50 :			don't unflatten arguments when reifying them.
51 :
52 :			1999-02-28 Stefan Monnier <monnier@cs.yale.edu>
53 :
54 :			* opt/fcontract.sml (fcEta): do the known->unknown eta-reduce if the
55 :			`known' function is not locally defined (in which case the known/unknown
56 :			distinction is pointless anyway).
57 :			(wrap): don't forget to junk dead inlinable functions.
58 :
59 :			1999-02-26 Stefan Monnier <monnier@cs.yale.edu>
60 :
61 :			* opt/split.sml: seriously reworked. Now splits TFNs as well.
62 :
63 :			1999-02-25 Stefan Monnier <monnier@cs.yale.edu>
64 :
65 :			* kernel/primop.sml (effect): removed DEREF and MAKEREF from the pure
66 :			primops.
67 :
68 :			1999-02-24 Stefan Monnier <monnier@cs.yale.edu>
69 :
70 :			* flint/flintutil.sml (copy): sort the type-map since {lt,tc}_subst
71 :			actually expects it to be sorted.
72 :
73 :			1999-02-23 Stefan Monnier <monnier@cs.yale.edu>
74 :
75 :			* opt/recover.sml (lt_nvpoly): moved to ltyextern.sml
76 :
77 :			* kernel/ltyextern.{sml,sig} (lt_nvpoly): new function (digged from
78 :			recover.sml to build a LT_POLY in the case of named tvars.
79 :
80 :			1999-02-20 Stefan Monnier <monnier@cs.yale.edu>
81 :
82 :			* opt/recover.sml: removed unused depth arguments left behind from before
83 :			we switched to named tvars.
84 :			(addLty): added for the benefit of opt/split.sml
85 :
86 :			1999-02-17 Stefan Monnier <monnier@cs.yale.edu>
87 :
88 :			* opt/split.sml: new file. Does the lambda-splitting for cross-module
89 :			inlining. Currently in a simplified form.
90 :
91 :			* opt/fcontract.sml (fcEta): bug with (mutually) recursive eta redexes.
92 :
93 :	monnier	203	1998-12-18 Stefan Monnier <monnier@cs.yale.edu>
94 :
95 :			* opt/fcontract.sml: turned fcFun into a foldable function.
96 :
97 :			1998-12-17 Stefan Monnier <monnier@cs.yale.edu>
98 :
99 :			* opt/loopify.sml: fix (TR-ing would fail if not LR-ing also)
100 :
101 :			1998-12-16 Stefan Monnier <monnier@cs.yale.edu>
102 :
103 :			* opt/loopify.sml: make dropinvariant optional.
104 :
105 :			1998-12-15 Stefan Monnier <monnier@cs.yale.edu>
106 :
107 :			* opt/loopify.sml: drop invariant arguments in loops.
108 :
109 :			* opt/optutils.sml (filter): curried.
110 :
111 :	monnier	202	1998-12-12 Stefan Monnier <monnier@cs.yale.edu>
112 :
113 :			* opt/fcontract.sml (fcFun): value-specialization (turned off: useless)
114 :			(fcApp): use IH_MAYBE.
115 :
116 :			* opt/fixfix.sml: improved the inlining heuristic by using the IH_MAYBE.
117 :
118 :			1998-11-29 Stefan Monnier <monnier@cs.yale.edu>
119 :
120 :			* opt/fcontract.sml (fcFun): only update the binding (after contracting
121 :			the function) if there are more functions to contract (the unusual case)
122 :
123 :			1998-11-28 Stefan Monnier <monnier@cs.yale.edu>
124 :
125 :			* opt/[lf]contract.sml,collect.sml: use PO.purePrimop
126 :
127 :			* opt/fcontract.sml: generalized the BRANCH thing.
128 :			It should now be faster to detect and avoid potential code blowups while
129 :			applying to more cases. But it requires one more pass to generate the
130 :			same code quality :-(
131 :			(fcexp): straightforward split into functions
132 :			(fcLet): do the BRANCH thing after contraction (plus force an additional
133 :			contraction, so the total is 3 passes for a fairly good handling of
134 :			wrap's equality-primop compilation)
135 :			(fcLet): drop TAPP if the output is unused.
136 :
137 :			1998-11-25 Stefan Monnier <monnier@cs.yale.edu>
138 :
139 :			* opt/loopify.sml: improved tail-calls recognition.
140 :			Also be more careful about wrapping loops into functions (so contraction
141 :			is not needed to cleanup).
142 :
143 :			* opt/fixfix.sml: pretend loops are smaller to increase their inlining.
144 :
145 :			* kernel/ltyextern.sml: commented out Stats calls.
146 :
147 :			* flint/flint.sig: changed LK_WHILE to LK_TAIL.
148 :
149 :	monnier	197	1998-11-21 Stefan Monnier <monnier@cs.yale.edu>
150 :
151 :			* reps/rttype.sml: changes from Bratin.
152 :			(rtLexp): define the NVAR case (return the tvar as an lvar).
153 :
154 :			* opt/[fl]contract.sml: removed the restriction on inlining at the same
155 :			deBruijn depth.
156 :
157 :			* opt/lift.sml: new file for typelifting.
158 :
159 :			* flint/flintutil.sml (copy): added tvar renaming.
160 :
161 :			* flint/tvarcvt.sml: new file for named tvar <-> deBruijn conversions.
162 :
163 :	monnier	191	1998-11-19 Stefan Monnier <monnier@cs.yale.edu>
164 :
165 :			* opt/loopify.sml: new file
166 :
167 :			* cps/convert.sml: added code to take advantage of LK_WHILE loops.
168 :
169 :			* opt/optutils.sml (id): removed. That was stupid.
170 :
171 :			* opt/collect.sml: drop support for actuals (was only used for cstargs).
172 :
173 :			* opt/lcontract.sml (lpfd): reset the inline bit to a safe value.
174 :
175 :			* opt/fcontract.sml (cstargs): eliminated. Might reappear in a
176 :			specialization phase some day.
177 :			(inline): turned off unrolling because it's buggy.
178 :			(APP): use the new ifs, damit!
179 :
180 :	monnier	187	1998-11-11 Stefan Monnier <monnier@cs.yale.edu>
181 :
182 :	monnier	189	* opt/fcontract.sml (sval): ref svals rather than going through F.value
183 :
184 :	monnier	187	* opt/collect.sml: switched back to a read-only collect phase. Also try
185 :			to export the info to allow fcontract to circumvent some of the get calls.
186 :			(info): got rid of Transfer by using the intmap for redirection.
187 :			(unuselexp): junk the fundec part.
188 :			(unuse): return a boolean instead of calling an undertaker.
189 :
190 :	monnier	185	1998-11-09 Stefan Monnier <monnier@cs.yale.edu>
191 :
192 :			* opt/fcontract.sml: take advantage of single-arm SWITCH (aka decon)
193 :			(SWITCH(CON)): just compare the conreps because types may differ (?)
194 :			(inlineWitness): ugly hack used to figure out if inlining happened,
195 :			in order to decide whether to keep the inline bit or not (in cfun).
196 :
197 :	monnier	184	1998-11-06 Stefan Monnier <monnier@cs.yale.edu>
198 :
199 :			* opt/fcontract.sml: added unrolling support
200 :
201 :			* reps/coerce.sml: replaced FK_FCT by fkfct, itself defined "sanely"
202 :
203 :			* opt/fixfix.sml: adapted to the new fkind and introduced unrolling
204 :
205 :			1998-11-05 Stefan Monnier <monnier@cs.yale.edu>
206 :
207 :			* flint/flint.sig: changed fkind to have most annotations valid on
208 :			functors as well. It also adds a loopkind annotation as well as extends
209 :			the inline boolean into a three-way alternative.
210 :
211 :	monnier	164	1998-10-30 Stefan Monnier <monnier@cs.yale.edu>
212 :
213 :			* opt/fcontract.sml (dropcstargs): replace constant args by the constant.
214 :	monnier	184	(cexp): switched to a continuation passing style to implement the
215 :			let-associativity rule in a better way.
216 :	monnier	164
217 :	monnier	189	* opt/fixfix.sml (curry): correctly handle "impossible" cases.
218 :	monnier	164
219 :			* opt/collect.sml: completely revisited: no distinction between
220 :			internal/external uses, dead-code elimination done right away. This
221 :			makes fcontract a little simpler.
222 :
223 :	monnier	163	1998-10-28 Stefan Monnier <monnier@cs.yale.edu>
224 :
225 :			* opt/fcontract.sml (inline): do simple inlining only for non-isrec
226 :			functions (to ensure we never silently turn external uses into internal
227 :			uses) and correspondingly change the agressive inlining to inline
228 :			non-inlinable functions as long as its their last use.
229 :			(dropargs): new functions to drop unused arguments.
230 :
231 :
232 :	monnier	162	1998-10-27 Stefan Monnier <monnier@cs.yale.edu>
233 :
234 :	monnier	163	* opt/optutils.sml: trying to reuse code between fixfix and fcontract.
235 :
236 :			* opt/collect.sml (called): added for eta-expand.
237 :
238 :			* opt/fcontract.sml (inline): allow single inlining of FK_FCT.
239 :
240 :	monnier	162	* lsplit/ls-inline.sml: don't call lcontract anymore.
241 :
242 :			1998-10-26 Stefan Monnier <monnier@cs.yale.edu>
243 :
244 :			* cps/cpstrans.sml (spillOut): fix from Zhong.
245 :
246 :			* cpsopt/cpsopt.sml: use Control.CG.cpsopt and fold over it.
247 :
248 :			* main/flintcomp.sml: use Control.FLINT.phases and fold over it.
249 :
250 :			* opt/fixfix.sml (curry): use Control.FLINT.maxargs to bound the uncurrying

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