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3529 Commits

Author SHA1 Message Date
Chris Lattner
d12eac0b1b Implement constant propogation of shift instructions 
llvm-svn: 2471
 2002-05-06 03:01:37 +00:00
Chris Lattner
9606fd4830 Ok, really it only takes me 3 times to get this right! 
Now use #if 0 instead of #ifdef 0

llvm-svn: 2448
 2002-05-02 21:49:50 +00:00
Chris Lattner
de442f70ac Oops, disable debugging code all the way. :) 
llvm-svn: 2447
 2002-05-02 21:47:40 +00:00
Chris Lattner
7d4f3ed1f2 * Finish the implementation of isEdgeFeasible this fixes bug: 
test/Regression/Transforms/SCCP/2002-05-02-EdgeFailure.ll
* SCCP now preserves the CFG:  It leaves conditional branches the way they
  are in the program, not simplifying them.  A seperate pass should eliminate
  the potentially dead basic blocks and edges in the CFG.

llvm-svn: 2446
 2002-05-02 21:44:00 +00:00
Chris Lattner
b30088a50d * Enable SCCP debugging to be turned on with a simple change of #define 
* Change worklist to a set so that duplicates cannot happen
* Add support for the invoke instruction
* Avoid marking store and free instructions as overdefined, since they
  cannot produce a value anyway.
* Inline the OperandChangedState implementation
* Add isEdgeFeasible in preparation to fix a bug.  Right now it behaves
  exactly as before.
* Remove obsolete comment about constant pools

llvm-svn: 2445
 2002-05-02 21:18:01 +00:00
Chris Lattner
28a8acc476 * Simplify the code by not bothering to name the folded constant 
* Do not skip the instruction immediately after a folded instruction.  This
  was causing the testcase failure:
	test/Regression/Transforms/SCCP/2002-05-02-MissSecondInst.ll

llvm-svn: 2443
 2002-05-02 20:32:51 +00:00
Chris Lattner
b7df910c1a * Add ability to eliminate a bunch of different cascading cast variations 
* Allow elimination of getelementptr X, uint 0 (which is a noop)

llvm-svn: 2428
 2002-05-02 17:06:02 +00:00
Chris Lattner
a6cb49c533 Add folding rules for mul X, 0 and mul X, 2 
llvm-svn: 2417
 2002-04-29 22:24:47 +00:00
Chris Lattner
5d1ac4dbc9 Significantly clean up SCCP pass. Now the two classes are merged and in 
an anonymous namespace where they belong.

llvm-svn: 2415
 2002-04-29 21:26:08 +00:00
Chris Lattner
48e73edf57 Range insertion now returns an iterator 
llvm-svn: 2414
 2002-04-29 21:25:34 +00:00
Chris Lattner
5d17e49ad5 Remove unused files: This is the old induction varaible cannonicalization 
pass built on top of interval analysis

llvm-svn: 2411
 2002-04-29 20:18:00 +00:00
Chris Lattner
f5d07697e6 changes because iMemory.h no longer #includes DerivedTypes.h 
This only requires Type.h anyway

llvm-svn: 2405
 2002-04-29 18:48:30 +00:00
Chris Lattner
96e0c48175 Eliminate duplicate or unneccesary #include's 
llvm-svn: 2397
 2002-04-29 17:42:12 +00:00
Chris Lattner
3909059b6a Remove broken assertion. 
llvm-svn: 2396
 2002-04-29 16:20:25 +00:00
Chris Lattner
589debc4ba Add new optional getPassName() virtual function that a Pass can override 
to make debugging output a lot nicer.

llvm-svn: 2395
 2002-04-29 14:57:45 +00:00
Chris Lattner
56828a18c4 More cleanups 
llvm-svn: 2392
 2002-04-29 01:58:47 +00:00
Chris Lattner
a8688d69c5 Code cleanups 
llvm-svn: 2391
 2002-04-29 01:22:55 +00:00
Chris Lattner
ec70d92221 Tighten up the AnalysisUsage of lots of passes, primarily to correctly indicate whether or not they invalidate the CFGA 
llvm-svn: 2386
 2002-04-28 21:27:06 +00:00
Chris Lattner
321a8cf4ba Split ConstantVals.h into Constant.h and Constants.h 
llvm-svn: 2378
 2002-04-28 19:55:58 +00:00
Chris Lattner
07fe96ca98 Eliminate the cfg namespace, moving LoopInfo, Dominators, Interval* classes 
to the global namespace

llvm-svn: 2370
 2002-04-28 16:21:30 +00:00
Chris Lattner
0bd57e6e99 Initial checkin of simple&fast SSA based GCSE algorithm 
llvm-svn: 2338
 2002-04-28 00:47:11 +00:00
Chris Lattner
536cf1b13f * Rename MethodPass class to FunctionPass 
- Rename runOnMethod to runOnFunction
* Transform getAnalysisUsageInfo into getAnalysisUsage
  - Method is now const
  - It now takes one AnalysisUsage object to fill in instead of 3 vectors
    to fill in
  - Pass's now specify which other passes they _preserve_ not which ones
    they modify (be conservative!)
  - A pass can specify that it preserves all analyses (because it never
    modifies the underlying program)
* s/Method/Function/g in other random places as well

llvm-svn: 2333
 2002-04-27 06:56:12 +00:00
Chris Lattner
0c04e4d1ef Changes because the Terminator::getSuccessor function now FAILS if successor 
IDX is out of range instead of returning null.

llvm-svn: 2332
 2002-04-27 03:15:45 +00:00
Chris Lattner
078d292f4c Change Constant::getNullConstant to Constant::getNullValue 
llvm-svn: 2323
 2002-04-27 02:25:14 +00:00
Chris Lattner
a392a80a60 Significantly rework InstructionCombining to work better and to be cleaner. 
We now use an InstVisitor to delegate to different cases that we are
interested in handling.  We also fix the FIXME's by adding users to the
worklist when appropriate.

llvm-svn: 2292
 2002-04-18 17:39:14 +00:00
Chris Lattner
bb60c83409 Convert SCCP over to use InstVisitor instead of hand crafted switch 
llvm-svn: 2286
 2002-04-18 15:13:15 +00:00
Chris Lattner
b736829547 GEP instructions can never be constant propogated. 
llvm-svn: 2284
 2002-04-18 14:44:13 +00:00
Chris Lattner
5e7d6d8066 Store instructions always return void, so they never get a name 
llvm-svn: 2283
 2002-04-18 14:43:54 +00:00
Chris Lattner
1923a5cfaa Eliminate cast of same type instructions. 
llvm-svn: 2251
 2002-04-15 19:45:29 +00:00
Chris Lattner
5e12c7caf5 Move FunctionArgument out of iOther.h into Argument.h and rename class to 
be 'Argument' instead of FunctionArgument.

llvm-svn: 2216
 2002-04-09 19:48:49 +00:00
Chris Lattner
b2038512b2 Add explicit #includes of Function.h to make up for the removed #include 
in iOther.h

llvm-svn: 2209
 2002-04-09 19:08:28 +00:00
Chris Lattner
7ae20d642d Add #includes to make up for #includes pruned out of header files. 
llvm-svn: 2207
 2002-04-09 18:37:46 +00:00
Chris Lattner
31e5838296 s/Method/Function 
Remove extraneous #includes of llvm/Assembly/Writer

llvm-svn: 2178
 2002-04-08 22:03:00 +00:00
Chris Lattner
44f14449c4 ConstantHandling moved into VMCore library 
llvm-svn: 2165
 2002-04-08 20:18:09 +00:00
Chris Lattner
bc15ae64dd Change references to the Method class to be references to the Function 
class.  The Method class is obsolete (renamed) and all references to it
are being converted over to Function.

llvm-svn: 2144
 2002-04-07 20:49:59 +00:00
Chris Lattner
b7f4043df7 Simplify code a lot by using the Module::getFunction & getOrInsertFunction 
llvm-svn: 2028
 2002-03-29 03:38:05 +00:00
Chris Lattner
849c762b02 Change references from Method to Function 
change references from MethodARgument to FunctionArgument

llvm-svn: 1991
 2002-03-26 18:01:55 +00:00
Vikram S. Adve
1f5e8f93cc Major overhaul to support arbitrary mixed array and structure indices. 
Also moved to the Scalar/ directory and renamed to "MultiDim".

llvm-svn: 1961
 2002-03-24 03:21:18 +00:00
Vikram S. Adve
3294262573 New pass to decompose multi-dimensional array references into 
a sequence of 1-D references, using a sequence of getElementPtrs.

llvm-svn: 1948
 2002-03-23 20:43:39 +00:00
Chris Lattner
b0128957b1 Fix bug: test/Regression/Other/2002-03-11-InstCombineHang.ll 
llvm-svn: 1864
 2002-03-11 23:28:45 +00:00
Chris Lattner
889b1e5b00 Fix bug: test/Regression/Other/2002-03-11-ConstPropCrash.ll 
llvm-svn: 1858
 2002-03-11 22:11:07 +00:00
Chris Lattner
e2383e8592 Change over to use new style pass mechanism, now passes only expose small 
creation functions in their public header file, unless they can help it.

llvm-svn: 1816
 2002-02-26 21:46:54 +00:00
Chris Lattner
8e9be000a7 * Pull BasicBlock::pred_* and BasicBlock::succ_* out of BasicBlock.h and into 
llvm/Support/CFG.h
* Make pred & succ iterators for intervals global functions
* Add #includes that are now neccesary because BasicBlock.h doesn't include
  InstrTypes.h anymore

llvm-svn: 1750
 2002-02-12 22:39:50 +00:00
Chris Lattner
b0a2c5546b Method.h no longer includes BasicBlock.h 
Method::inst_* is now in llvm/Support/InstIterator.h
GraphTraits specializations for BasicBlock and Methods are now in llvm/Support/CFG.h

llvm-svn: 1746
 2002-02-12 21:07:25 +00:00
Chris Lattner
dc15bb209d MethodPass's are now guaranteed to not be run on external methods! 
llvm-svn: 1611
 2002-01-31 00:51:24 +00:00
Chris Lattner
2e463f5dbe Convert xforms over to new pass structure. 
llvm-svn: 1605
 2002-01-31 00:45:11 +00:00
Chris Lattner
2cab187296 Remove extraneous #includes 
llvm-svn: 1588
 2002-01-26 22:47:32 +00:00
Chris Lattner
0fea9f487b Remove opt namespace 
llvm-svn: 1587
 2002-01-26 22:47:07 +00:00
Chris Lattner
71ee02c009 Implement new DeadInstElmination pass 
remove old comment

llvm-svn: 1555
 2002-01-23 05:48:24 +00:00
Chris Lattner
e12b9f9277 Don't insert a useless cast 
llvm-svn: 1527
 2002-01-22 03:30:06 +00:00
Chris Lattner
4cecd63a42 Rename LowerAllocations.h to ChangeAllocations.h since it now contains the 
RaiseAllocations pass as well.

llvm-svn: 1525
 2002-01-22 01:04:08 +00:00
Chris Lattner
83056c99ec Pull RaiseAllocations stuff out of the CleanGCC pass into it's own pass in 
the ChangeAllocations.h header file.

llvm-svn: 1522
 2002-01-22 00:13:51 +00:00
Chris Lattner
250d937680 LowerAllocations is really a BasicBlock pass. Make it so. 
llvm-svn: 1521
 2002-01-21 23:34:02 +00:00
Chris Lattner
4454cdc5c0 Move stuff out of the Optimizations directories into the appropriate Transforms 
directories.  Eliminate the opt namespace.

llvm-svn: 1520
 2002-01-21 23:17:48 +00:00
Chris Lattner
2521ae1011 Implement a more powerful, simpler, pass system. This pass system can figure 
out how to run a collection of passes optimially given their behaviors and
charactaristics.

Convert code to use it.

llvm-svn: 1507
 2002-01-21 07:31:50 +00:00
Chris Lattner
3dc9a2a61f Changes to build successfully with GCC 3.02 
llvm-svn: 1503
 2002-01-20 22:54:45 +00:00
Chris Lattner
37ba4e2bb7 initial checkin 
llvm-svn: 1480
 2001-12-14 16:52:21 +00:00
Chris Lattner
9e6ccdd858 Remove unsized array support 
llvm-svn: 1466
 2001-12-14 16:38:04 +00:00
Chris Lattner
488f202019 Assertion could never fail because another one would in it's place. :) 
llvm-svn: 1449
 2001-12-13 00:45:40 +00:00
Chris Lattner
d89106f96b Actually return true when a change has been made 
llvm-svn: 1425
 2001-12-05 19:41:33 +00:00
Chris Lattner
7059b60173 Fix a bug introduced by "internal linkage" work. 
llvm-svn: 1415
 2001-12-04 18:01:49 +00:00
Chris Lattner
8ec5ceb110 Fix bugs, don't do external methods which causes segv. 
llvm-svn: 1414
 2001-12-04 08:13:06 +00:00
Chris Lattner
bd85988c94 Implement induction variable simplification 
llvm-svn: 1411
 2001-12-04 04:32:29 +00:00
Chris Lattner
c4a5815033 Renamed inst_const_iterator -> const_inst_iterator 
Renamed op_const_iterator   -> const_op_iterator
Renamed PointerType::getValueType() -> PointerType::getElementType()

llvm-svn: 1408
 2001-12-04 00:03:30 +00:00
Chris Lattner
f6b7da2bb5 Rename ConstPoolVal -> Constant 
Rename ConstPool*   -> Constant*
Rename ConstPoolVals.h -> ConstantVals.h

llvm-svn: 1407
 2001-12-03 22:26:30 +00:00
Chris Lattner
bcf2df7058 Split the PHINode class out from the iOther.h file into the iPHINode.h file 
llvm-svn: 1405
 2001-12-03 18:02:31 +00:00
Chris Lattner
a337749b35 Initial checkin of indvar stuff 
llvm-svn: 1404
 2001-12-03 17:28:42 +00:00
Chris Lattner
463cc31132 Create a new #include "Support/..." directory structure to move things 
from "llvm/Support/..." that are not llvm dependant.

Move files and fix #includes

llvm-svn: 1400
 2001-11-27 00:03:19 +00:00
Chris Lattner
d10d3f1015 Misc cleanups 
llvm-svn: 1377
 2001-11-26 18:57:38 +00:00
Chris Lattner
8fd567523c Expose constant propogation of an instruction in a clean way 
llvm-svn: 1376
 2001-11-26 18:57:12 +00:00
Chris Lattner
e33afc1d46 Add #includes to enable buiding in Release mode 
llvm-svn: 1174
 2001-11-07 13:49:45 +00:00
Chris Lattner
82c7401f23 Avoid making a broken transformation! 
llvm-svn: 1115
 2001-11-03 21:30:22 +00:00
Chris Lattner
a621bac2a6 Expose the low level DCE mechanism to external users 
Refactor code to support it

llvm-svn: 1083
 2001-11-01 07:00:27 +00:00
Chris Lattner
3b2c78da03 Simplify DCE code a lot 
llvm-svn: 1079
 2001-11-01 05:55:29 +00:00
Chris Lattner
986e273442 Use the correct prototype for malloc and free 
llvm-svn: 1066
 2001-10-31 06:36:23 +00:00
Chris Lattner
91fc057638 Implemented constant propogation of cast instructions 
llvm-svn: 1064
 2001-10-31 05:07:57 +00:00
Chris Lattner
40372ce62d Convert to new simpler pass itf 
llvm-svn: 880
 2001-10-18 05:27:33 +00:00
Chris Lattner
4429216038 Convert optimizations to the pass infrastructure 
llvm-svn: 873
 2001-10-18 01:32:34 +00:00
Chris Lattner
9bfad5b7b1 Add new Pass infrastructure and some examples 
llvm-svn: 836
 2001-10-15 17:31:51 +00:00
Chris Lattner
4c81efaf8e Support the invoke instruction 
llvm-svn: 765
 2001-10-13 06:52:41 +00:00
Chris Lattner
08b1dde37e Commit more code over to new cast style 
llvm-svn: 697
 2001-10-02 03:41:24 +00:00
Chris Lattner
ad1b0a1a83 Convert more code to use new style casts 
Eliminate old style casts from value.h

llvm-svn: 696
 2001-10-01 20:11:19 +00:00
Chris Lattner
4c684cde80 Add more support for new style casts 
Convert more code to use them

llvm-svn: 695
 2001-10-01 18:26:53 +00:00
Chris Lattner
43781f1f96 Add support for new style casts 
llvm-svn: 694
 2001-10-01 16:18:37 +00:00
Chris Lattner
345daca305 Pull predecessor and successor iterators out of the CFG*.h files, and plop them into 
the BasicBlock class where they should be.  pred_begin/pred_end become methods on BasicBlock,
and the cfg namespace isn't used anymore.

llvm-svn: 691
 2001-10-01 13:19:53 +00:00
Chris Lattner
9b45b18404 Pull iterators out of CFG.h and CFGdecls and put them in Support directory 
llvm-svn: 664
 2001-09-28 22:56:31 +00:00
Chris Lattner
2fc6c49ee7 ADCE is broken but at least we know why 
llvm-svn: 656
 2001-09-28 00:06:42 +00:00
Chris Lattner
c583ae1a1a Make ADCE more robust, it still has problems, but it's getting closer 
llvm-svn: 521
 2001-09-09 22:26:47 +00:00
Chris Lattner
e299925703 Types and constants are wierd things in symbol tables now 
llvm-svn: 457
 2001-09-07 16:43:50 +00:00
Chris Lattner
b82abeff92 * Eliminate reference to ConstantPool class 
* Constants are global objects that are not allocated or freed

llvm-svn: 456
 2001-09-07 16:43:22 +00:00
Chris Lattner
4fc1bcadd9 Constants are now global unique objects 
llvm-svn: 454
 2001-09-07 16:42:26 +00:00
Chris Lattner
eaf4551d57 * Eliminate constant pool dependancies: 
* Eliminate DoRemoveUnusedConstants

llvm-svn: 453
 2001-09-07 16:42:08 +00:00
Chris Lattner
6a211421bf * Supoprt global constants 
* Remove support for local constant pools
* Eliminate constant pool merging method, which is no longer neccesary
* Disable invalid optimization (todo: fix it)

llvm-svn: 452
 2001-09-07 16:41:30 +00:00
Chris Lattner
a4b4e46e90 Enable the elimination of method prototypes that are not referenced 
llvm-svn: 325
 2001-07-28 17:51:49 +00:00
Chris Lattner
ff6c44f04f Moved inline/llvm/Tools/* to include/llvm/Support/* 
llvm-svn: 279
 2001-07-23 17:46:59 +00:00
Chris Lattner
11f4097f50 Support external methods 
llvm-svn: 200
 2001-07-15 21:43:45 +00:00
Chris Lattner
a969eb234b Add knowledge about the struct form of the GetElementPtr instruction 
llvm-svn: 183
 2001-07-14 06:11:51 +00:00
Chris Lattner
10ff90d678 Remove dependency on the structure of ValueHolder. 
llvm-svn: 182
 2001-07-14 06:11:26 +00:00
Chris Lattner
80c9d7c165 Don't clean out the type plane of the constant pool... this is a hack. FIXME 
llvm-svn: 172
 2001-07-09 19:38:52 +00:00
Chris Lattner
3b66715c67 Implement checking for new instructions 
llvm-svn: 163
 2001-07-08 21:18:49 +00:00
Chris Lattner
acc906f1de Use the CDG to mark branches alive on demand. 
llvm-svn: 159
 2001-07-08 18:38:36 +00:00
Chris Lattner
7a7ddef47e Neg instruction removed. Cast instruction implemented. 
llvm-svn: 156
 2001-07-08 04:57:15 +00:00
Chris Lattner
c00392210d Broad superficial changes: 
* Renamed getOpcode to getOpcodeName
* Changed getOpcodeName to return a const char * instead of string
* Added a getOpcode method to replace getInstType
* Changed code to use getOpcode instead of getInstType

llvm-svn: 152
 2001-07-07 19:24:15 +00:00
Chris Lattner
6f7587e4d3 Changed the fundemental architecture of Operands for Instructions. Now 
Operands are maintained as a vector<Use> in the User class, and operator
iterators are provided as before.  Getting an operand no longer requires
a virtual function call.

WARNING: getOperand(x) where x >= getNumOperands() will now assert instead
of returning null!

llvm-svn: 149
 2001-07-07 08:36:50 +00:00
Chris Lattner
e28135f621 Update to include right file 
llvm-svn: 138
 2001-07-06 16:32:07 +00:00
Chris Lattner
d4e8817fd9 Initial checkin. Should print dead instructions, except it doesn't do 
control dependencies.  :(

llvm-svn: 119
 2001-06-30 06:39:11 +00:00
Chris Lattner
c4e564a84c Rename DoSparseConditionalConstantProp -> DoSCCP 
llvm-svn: 117
 2001-06-30 06:37:43 +00:00
Chris Lattner
0815f96a2f Optimizations got their own header files 
Optimizations now live in the 'opt' namespace
include/llvm/Opt was renamed include/llvm/Optimizations

llvm-svn: 113
 2001-06-30 04:36:40 +00:00
Chris Lattner
fd733edaa7 Export ConstantFoldTerminator, allow it to fold conditional branches to 
the same label.

llvm-svn: 107
 2001-06-29 23:56:58 +00:00
Chris Lattner
81bbbcfe1f Added documentation. Constant fold terminators. 
llvm-svn: 106
 2001-06-29 23:56:23 +00:00
Chris Lattner
e005dc792d * Factored RemovePredecessorFromBlock into BasicBlock::removePredecessor 
* Avoid messing around with this case:
  br label %A
%A:  br label %A
* Enable optimizations that are correct now.

llvm-svn: 102
 2001-06-29 05:24:28 +00:00
Chris Lattner
f5b28afa04 We need to make sure to remove PHI nodes in the successor that cannot be 
executed when removing branch dest.

llvm-svn: 101
 2001-06-29 05:23:10 +00:00
Chris Lattner
d616582a7a Miscellaneous cleanups: 
* Convert post to pre-increment for for loops
  * Use generic programming more
  * Use new Value::cast* instructions
  * Use new Module, Method, & BasicBlock forwarding methods
  * Use new facilities in STLExtras.h
  * Use new Instruction::isPHINode() method

llvm-svn: 96
 2001-06-27 23:41:11 +00:00
Chris Lattner
0a37aa1884 Add a new Sparse Conditional Constant Propogation pass 
llvm-svn: 95
 2001-06-27 23:38:11 +00:00
Chris Lattner
87259414f9 Misc cleanup 
llvm-svn: 91
 2001-06-27 23:36:09 +00:00
Chris Lattner
c9c6ca507f * Expose DoConstantPoolMerging 
* Cleanups (post->pre increment, new cleaner API, etc)
* Moved stuff into ConstantHandling.h

llvm-svn: 90
 2001-06-27 23:35:26 +00:00
Chris Lattner
725a64614c Implement induction variable injection! 
llvm-svn: 75
 2001-06-25 07:32:19 +00:00
Chris Lattner
105f271c39 A silly stupid test of the loop depth calculator was added. REMOVE in the 
future.

llvm-svn: 72
 2001-06-25 03:55:37 +00:00
Chris Lattner
89a7836d09 #include a different header due to Intervals.h splitting up 
llvm-svn: 63
 2001-06-24 04:05:45 +00:00
Chris Lattner
4ebfee6ae4 Implement a lot more functionality. Now loop invariant and linear 
induction variables are correctly identified.

llvm-svn: 57
 2001-06-22 02:24:38 +00:00
Chris Lattner
b87e26435e Moved printing code to the Assembly/Writer library. 
Code now detects looping intervals

llvm-svn: 52
 2001-06-21 05:27:22 +00:00
Chris Lattner
5d07eeb20a Get rid of a silly printout that isn't needed right now 
llvm-svn: 45
 2001-06-20 23:09:39 +00:00
Chris Lattner
3f0d248cea Add capability to print a derived interval graph 
llvm-svn: 42
 2001-06-20 22:44:38 +00:00
Chris Lattner
30200aa462 Add a test case for interval code 
llvm-svn: 36
 2001-06-20 19:27:11 +00:00
Chris Lattner
469c33ad89 Updates to work with new cfg namespace 
llvm-svn: 29
 2001-06-13 19:55:22 +00:00
Chris Lattner
a6d2f96bdb Updates to support 
* Changes in PHI node structure

llvm-svn: 25
 2001-06-11 15:04:40 +00:00
Chris Lattner
5975876e9b Updated to work with new CFG.h file. 
llvm-svn: 15
 2001-06-07 21:18:45 +00:00
Chris Lattner
68035d3c02 Significant rework. DCE is still not done (see #ifdef'd out parts) 
but at least the stuff that is checked in, now works.

llvm-svn: 10
 2001-06-07 16:59:26 +00:00
Chris Lattner
e6b9b382e2 Initial revision 
llvm-svn: 2
 2001-06-06 20:29:01 +00:00