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131 Commits

Author SHA1 Message Date
Gabor Greif
dfe6dea95f typoes 
llvm-svn: 113647
 2010-09-10 22:25:58 +00:00
Owen Anderson
f2fea95f2f Reapply r110396, with fixes to appease the Linux buildbot gods. 
llvm-svn: 110460
 2010-08-06 18:33:48 +00:00
Owen Anderson
aadd8a89ca Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +00:00
Owen Anderson
b9762c07cb Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static 
ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396
 2010-08-05 23:42:04 +00:00
Dan Gohman
32010a6c96 Use DominatorTree::properlyDominates instead of dominates with an 
explicit inequality check.

llvm-svn: 109401
 2010-07-26 17:37:36 +00:00
Dan Gohman
bed2730c5b A block dominates itself, by definition. 
llvm-svn: 109400
 2010-07-26 17:35:32 +00:00
Gabor Greif
96a9f8c7c6 mass elimination of reliance on automatic iterator dereferencing 
llvm-svn: 109103
 2010-07-22 13:36:47 +00:00
Owen Anderson
f8addbb0a1 Fix batch of converting RegisterPass<> to INTIALIZE_PASS(). 
llvm-svn: 109045
 2010-07-21 22:09:45 +00:00
Duncan Sands
f7b98e2b1e Convert some tab stops into spaces. 
llvm-svn: 108130
 2010-07-12 08:16:59 +00:00
Devang Patel
0c927a80fe Use ValueMap instead of DenseMap. 
The ValueMapper used by various cloning utility maps MDNodes also.

llvm-svn: 106706
 2010-06-24 00:33:28 +00:00
Dan Gohman
74d5144414 Use pre-increment instead of post-increment when the result is not used. 
llvm-svn: 106542
 2010-06-22 15:08:57 +00:00
Devang Patel
fa560fdfc1 Check for side effects before splitting loop. 
Patch by Jakub Staszak!

llvm-svn: 102928
 2010-05-03 18:06:58 +00:00
Dan Gohman
e4a22bdd4a Use do+while instead of while for loops which obviously have a 
non-zero trip count. Use SmallVector's pop_back_val().

llvm-svn: 92734
 2010-01-05 16:27:25 +00:00
Dan Gohman
0f8f7f179d Add Loop contains utility methods for testing whether a loop 
contains another loop, or an instruction. The loop form is
substantially more efficient on large loops than the typical
code it replaces.

llvm-svn: 91654
 2009-12-18 01:24:09 +00:00
Dan Gohman
3c155aa3cd Update various Loop optimization passes to cope with the possibility that 
LoopSimplify form may not be available.

llvm-svn: 86175
 2009-11-05 21:11:53 +00:00
Nick Lewycky
cacdc4d65a Remove ICmpInst::isSignedPredicate which was a reimplementation 
CmpInst::isSigned.

llvm-svn: 85037
 2009-10-25 05:20:17 +00:00
Chris Lattner
5f54c5bd1c eliminate VISIBILITY_HIDDEN from Transforms/Scalar. PR4861 
llvm-svn: 80766
 2009-09-02 06:11:42 +00:00
Chris Lattner
f37893e7a1 Fix PR3913, patch by Jakub Staszak! 
llvm-svn: 80327
 2009-08-28 00:43:14 +00:00
Owen Anderson
9df206d02d Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Owen Anderson
cc33e89571 Revert the ConstantInt constructors back to their 2.5 forms where possible, thanks to contexts-on-types. More to come. 
llvm-svn: 77011
 2009-07-24 23:12:02 +00:00
Owen Anderson
cc287b28c9 Get rid of the Pass+Context magic. 
llvm-svn: 76702
 2009-07-22 00:24:57 +00:00
Owen Anderson
49226b1075 This started as a small change, I swear. Unfortunately, lots of things call the [I|F]CmpInst constructors. Who knew!? 
llvm-svn: 75200
 2009-07-09 23:48:35 +00:00
Owen Anderson
121f736d9c "LLVMContext* " --> "LLVMContext *" 
llvm-svn: 74878
 2009-07-06 23:00:19 +00:00
Owen Anderson
6795819c9e Second batch of passes using LLVMContext. 
llvm-svn: 74753
 2009-07-03 00:54:20 +00:00
Dan Gohman
28702fab4e Don't try to split a loop when the controlling icmp instruction 
doesn't have an IV-based operand. This fixes PR4471.

llvm-svn: 74399
 2009-06-27 22:58:27 +00:00
Dan Gohman
2e737ac21f Support vector casts in more places, fixing a variety of assertion 
failures.

To support this, add some utility functions to Type to help support
vector/scalar-independent code. Change ConstantInt::get and
ConstantFP::get to support vector types, and add an overload to
ConstantInt::get that uses a static IntegerType type, for
convenience.

Introduce a new getConstant method for ScalarEvolution, to simplify
common use cases.

llvm-svn: 73431
 2009-06-15 22:12:54 +00:00
Eli Friedman
334cc4e389 Fix loop-index-split to correctly preserve dominance frontiers. Part of 
PR4238.

llvm-svn: 72244
 2009-05-22 03:22:46 +00:00
Duncan Sands
880eaf5278 Allow readonly functions to unwind exceptions. Teach 
the optimizers about this.  For example, a readonly
function with no uses cannot be removed unless it is
also marked nounwind.

llvm-svn: 71071
 2009-05-06 06:49:50 +00:00
Dan Gohman
8b1b8d5891 Reword and tidy up some comments. 
llvm-svn: 70416
 2009-04-29 22:01:05 +00:00
Owen Anderson
f127f4a7a9 LoopIndexSplit needs to inform the loop pass manager of the instructions it is 
deleting, not just the basic block.

llvm-svn: 69011
 2009-04-14 01:04:19 +00:00
Devang Patel
ec65625744 Loop Index Split can eliminate a loop if it can determin if loop body is executed only once. There was a bug in determining IV based value of the iteration for which the loop body is executed. Fix it. 
llvm-svn: 68071
 2009-03-30 22:24:10 +00:00
Devang Patel
8c31ea5290 Before deleting a basic block, give other loop passes a chance cleanup analysis values, related to the instructions in the basic block. 
llvm-svn: 67719
 2009-03-25 23:57:48 +00:00
Devang Patel
e98e6bc27c If branch conditions' one successor is dominating another non-latch successor then this loop's iteration space can not be restricted. In this example block bb5 is always executed. 
llvm-svn: 65902
 2009-03-02 23:39:14 +00:00
Dan Gohman
ced54f0173 LoopIndexSplit doesn't actually use ScalarEvolution. 
llvm-svn: 64811
 2009-02-17 20:50:11 +00:00
Dan Gohman
f74d17b36a Add a utility function to LoopInfo to return the exit block 
when the loop has exactly one exit, and make use of it in
LoopIndexSplit.

llvm-svn: 64388
 2009-02-12 18:08:24 +00:00
Devang Patel
85ae609834 Ignore DbgInfoIntrinsics. 
llvm-svn: 63923
 2009-02-06 06:19:06 +00:00
Devang Patel
a8d0117253 Fix spelling. 
Thanks Duncan!

llvm-svn: 60702
 2008-12-08 17:07:24 +00:00
Devang Patel
4fcea36b8b Rewrite code that 1) filters loops and 2) calculates new loop bounds. 
This fixes many bugs. I will add more test cases in a separate check-in.

Some day, the code that manipulates CFG and updates dom. info could use refactoring help.

llvm-svn: 60554
 2008-12-04 21:38:42 +00:00
Devang Patel
f0d6bd18d5 If the sign of exit condition and split condition does not match 
then do not split loop index.

llvm-svn: 58995
 2008-11-10 19:48:34 +00:00
Daniel Dunbar
5447f9679d Change create*Pass factory functions to return Pass* instead of 
LoopPass*.
 - Although less precise, this means they can be used in clients
   without RTTI (who would otherwise need to include LoopPass.h, which
   eventually includes things using dynamic_cast). This was the
   simplest solution that presented itself, but I am happy to use a
   better one if available.

llvm-svn: 58010
 2008-10-22 23:32:42 +00:00
Devang Patel
255fee3bce Check loop exit predicate properly while eliminating one iteration loop. 
This patch fixes PR 2869

llvm-svn: 57369
 2008-10-10 22:02:57 +00:00
Devang Patel
378c8633e5 Fix typo, fix PR 2865. 
llvm-svn: 57221
 2008-10-06 23:22:54 +00:00
Devang Patel
1e7ddf5d31 splitLoop does not handle split condition EQ. 
Fixes PR 2805

llvm-svn: 56321
 2008-09-18 23:45:14 +00:00
Devang Patel
50c22bf69b Do not ignore iv uses outside the loop. 
This one slipped through cracks very well.

llvm-svn: 56284
 2008-09-17 17:53:47 +00:00
Dan Gohman
e1f9be27bc Tidy up several unbeseeming casts from pointer to intptr_t. 
llvm-svn: 55779
 2008-09-04 17:05:41 +00:00
Dan Gohman
027326ba3e Use empty() instead of begin() == end(). 
llvm-svn: 54780
 2008-08-14 18:13:49 +00:00
Devang Patel
2b56d5281d If loop induction variable's start value is less then its exit value then do not split the loop. 
llvm-svn: 53265
 2008-07-09 00:12:01 +00:00
Dan Gohman
e9f0a28c64 Fix a typo in a comment. 
llvm-svn: 52687
 2008-06-24 18:00:21 +00:00
Devang Patel
9f385d71c2 Do not erase induction variable increment if it is used outside the loop. 
llvm-svn: 51280
 2008-05-19 22:23:55 +00:00
Gabor Greif
d61f20217a API change for {BinaryOperator|CmpInst|CastInst}::create*() --> Create. Legacy interfaces will be in place for some time. (Merge from use-diet branch.) 
llvm-svn: 51200
 2008-05-16 19:29:10 +00:00