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a18861ff29
Commit Graph

418 Commits

Author SHA1 Message Date
Chris Lattner
a18861ff29 Bill contributed this major rewrite of the -lowerswitch pass to make it generate 
logarithmic conditional branch sequences instead of linear sequences.  Thanks Bill!

llvm-svn: 8928
 2003-10-07 18:46:23 +00:00
Chris Lattner
edb06ce061 Fix bug in previous checkin 
llvm-svn: 8922
 2003-10-07 15:17:02 +00:00
Chris Lattner
e6955c77e0 Minor speedups for the instcombine pass 
llvm-svn: 8894
 2003-10-06 17:11:01 +00:00
Chris Lattner
d1c3f771f8 Change the interface to PromoteMemToReg to also take a DominatorTree 
llvm-svn: 8883
 2003-10-05 21:20:13 +00:00
Chris Lattner
40a236b9ea Initial checkin of the LLVM->LLVM transform to support code generators which 
do not support stack unwinding yet

llvm-svn: 8869
 2003-10-05 19:14:42 +00:00
Chris Lattner
5206a78804 simplify-cfg is really a function pass 
llvm-svn: 8868
 2003-10-05 19:14:16 +00:00
Chris Lattner
059033218b Implement InstCombine/add.ll:test17 & 18 
llvm-svn: 8817
 2003-10-02 15:11:26 +00:00
Chris Lattner
cdf12dfd03 Fix bug: IndVarsSimplify/2003-09-23-NotAtTop.ll 
llvm-svn: 8689
 2003-09-23 20:26:48 +00:00
Misha Brukman
db8303670b Credits now go into the top-level CREDITS.TXT 
llvm-svn: 8662
 2003-09-22 21:57:56 +00:00
Chris Lattner
68f6d33416 Squelch warning 
llvm-svn: 8659
 2003-09-22 20:33:34 +00:00
Chris Lattner
d4de2760aa Rename Function::getEntryNode -> getEntryBlock 
llvm-svn: 8625
 2003-09-20 14:39:18 +00:00
Chris Lattner
7bf15fccb9 Fix a really obvious huge gaping bug, add a comment 
llvm-svn: 8620
 2003-09-20 05:24:00 +00:00
Chris Lattner
bf7dd80e7c Expose the TCE pass 
llvm-svn: 8619
 2003-09-20 05:14:13 +00:00
Chris Lattner
70c9cbd5c6 New transformation: tail recursion elimination 
llvm-svn: 8618
 2003-09-20 05:03:31 +00:00
Chris Lattner
ef92d8eebb Implement InstCombine/and.ll:test(15|16) 
llvm-svn: 8607
 2003-09-19 19:05:02 +00:00
Chris Lattner
b8d0545d27 pull a large nested conditional out into its own function 
llvm-svn: 8605
 2003-09-19 17:17:26 +00:00
Chris Lattner
219dd8b23d Implement InstCombine/add.ll:test(15|16) 
llvm-svn: 8604
 2003-09-19 15:35:42 +00:00
Chris Lattner
3a26b0d3be Make sure to cannonicalize loops before running indvar simplify 
llvm-svn: 8502
 2003-09-12 16:45:01 +00:00
Chris Lattner
f277240919 Do not return success after checking only the FIRST USE of a gep instruction. 
Instead, check all uses.
This fixes bug: ScalarRepl/2003-09-12-IncorrectPromote.ll
This also fixes the miscompilation of Ptrdist/bc

llvm-svn: 8493
 2003-09-12 16:02:12 +00:00
Chris Lattner
b12390cc41 Minor optimization efficiency improvement: 
- Run mem2reg promotion first
  - Only rerun passes if the previous thing changed something

llvm-svn: 8490
 2003-09-12 15:36:03 +00:00
Chris Lattner
9036a399f1 Simplify code 
Implement InstCombine/mul.ll:test9

llvm-svn: 8488
 2003-09-11 22:24:54 +00:00
Misha Brukman
ddbf126a18 Apostrophes are only used for possession and quoting. 
llvm-svn: 8473
 2003-09-11 16:58:31 +00:00
Chris Lattner
8a901c4d27 Integrate functionality of the mem2reg pass directly into this pass to make 
the combination more effective

llvm-svn: 8471
 2003-09-11 16:45:55 +00:00
Chris Lattner
3d39abeeb7 Renamed DominatorTree::Node::getNode() -> getBlock() 
llvm-svn: 8469
 2003-09-11 16:26:13 +00:00
Misha Brukman
d8279c4406 Spell `definite' correctly. 
llvm-svn: 8467
 2003-09-11 15:32:37 +00:00
Chris Lattner
b859bf2fb5 Unwind instructions are intrinsically alive, just like returns 
llvm-svn: 8462
 2003-09-10 20:38:14 +00:00
Chris Lattner
58d4183a25 Fix spell-o's 
llvm-svn: 8431
 2003-09-10 05:29:43 +00:00
Chris Lattner
df4ad7b311 Spelling fixes. I think that "cannonical" is ok, but "canonical" appears to 
be the canonical form for the word

llvm-svn: 8430
 2003-09-10 05:24:46 +00:00
Chris Lattner
501ec018c7 Fix up file header 
llvm-svn: 8428
 2003-09-10 05:10:34 +00:00
Misha Brukman
cac883668e Spell `occurrence' correctly. 
llvm-svn: 8425
 2003-09-09 21:54:45 +00:00
Chris Lattner
4ad8720f91 Add support for the unwind instruction 
llvm-svn: 8408
 2003-09-08 18:54:55 +00:00
Chris Lattner
03b8e81aef Do not hoist volatile loads 
llvm-svn: 8399
 2003-09-08 18:17:14 +00:00
Chris Lattner
c3019e3d22 Fix bug: TailDuplicate/2003-08-31-UnreachableBlocks.ll 
llvm-svn: 8276
 2003-08-31 21:17:44 +00:00
Chris Lattner
09777aa277 ScalarRepl does not modify the CFG. Say so! 
llvm-svn: 8243
 2003-08-31 00:45:13 +00:00
Chris Lattner
663f967b7b Use new interface, simplifies code 
llvm-svn: 8242
 2003-08-31 00:22:27 +00:00
Chris Lattner
491ea39105 Fix bug: SCCP/2003-08-26-InvokeHandling.ll 
llvm-svn: 8152
 2003-08-27 01:08:35 +00:00
Chris Lattner
aa004bbc69 Fix bug: LowerSwitch/2003-08-23-EmptySwitch.ll 
llvm-svn: 8087
 2003-08-23 22:54:34 +00:00
Chris Lattner
4d5a165218 Fix bug: TailDup/2003-08-23-InvalidatedPointers.ll 
llvm-svn: 8078
 2003-08-23 20:08:30 +00:00
Misha Brukman
cda7f97dbb The word dependent' has no a'. 
llvm-svn: 8030
 2003-08-21 22:14:26 +00:00
Chris Lattner
7190bb52f3 Fix grammar, add comment 
llvm-svn: 7967
 2003-08-18 22:54:06 +00:00
Misha Brukman
56f7db4178 Spell `necessary' correctly. 
llvm-svn: 7944
 2003-08-18 14:43:39 +00:00
Brian Gaeke
4651096037 Factory methods for function passes now return type FunctionPass *. 
llvm-svn: 7839
 2003-08-14 06:09:32 +00:00
Chris Lattner
2b7babcc41 Implement instcombine optimizations: 
(A <setcc1> B) logicalop (A <setcc2> B)  -> (A <setcc3> B) or true or false

Where setcc[123] is one of the 6 setcc instructions, and logicalop is one of: And, Or, Xor

llvm-svn: 7828
 2003-08-13 20:16:26 +00:00
Chris Lattner
7ba3220999 Generalize some of the add tests to allow for reassociation to take place 
llvm-svn: 7825
 2003-08-13 19:01:45 +00:00
Brian Gaeke
77c65be59e Factory methods for FunctionPasses now return type FunctionPass *. 
llvm-svn: 7823
 2003-08-13 18:18:15 +00:00
Chris Lattner
4e543f7021 Assign arguments different ranks so they get grouped together 
llvm-svn: 7813
 2003-08-13 16:16:26 +00:00
Chris Lattner
374473c778 Implement InstCombine/2003-08-12-AllocaNonNull.ll 
llvm-svn: 7807
 2003-08-13 05:38:46 +00:00
Chris Lattner
f8fbdb5ded Do not cannonicalize (X != 0) into (cast X to bool) 
llvm-svn: 7806
 2003-08-13 05:33:12 +00:00
Chris Lattner
5c9ccccd96 Change cannonicalization rules: add X,X is represented as multiplies, multiplies 
of a power of two are represented as a shift.

llvm-svn: 7803
 2003-08-13 04:18:28 +00:00
Chris Lattner
3e52e8ce5a Allow pulling logical operations through shifts. 
This implements InstCombine/shift.ll:test14*

llvm-svn: 7793
 2003-08-12 21:53:41 +00:00