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80 Commits

Author SHA1 Message Date
Chris Lattner
8b521613d3 rewrite LCSSA to use SSAUpdate, to only return true if it modifies 
the IR, and to implement the FIXME'd optimization.

llvm-svn: 83748
 2009-10-11 02:53:37 +00:00
Chris Lattner
1b8c1d1d29 clean up and simplify some code. Don't use setvector when things will be 
inserted only once, just use vector.  Don't compute ExitBlocks unless we
need it, change std::sort to array_pod_sort.

llvm-svn: 83747
 2009-10-11 01:07:15 +00:00
Chris Lattner
317eb8ff20 random tidying 
llvm-svn: 83701
 2009-10-10 06:22:45 +00:00
Dan Gohman
9776ad2192 Remove a redundant #ifndef and add an assertion string. 
llvm-svn: 82991
 2009-09-28 14:38:19 +00:00
Dan Gohman
cdaa08e706 Re-apply r80926, with fixes: keep the domtree informed of new blocks 
that get created during loop unswitching, and fix SplitBlockPredecessors'
LCSSA updating code to create new PHIs instead of trying to just move
existing ones.

Also, optimize Loop::verifyLoop, since it gets called a lot. Use
searches on a sorted list of blocks instead of calling the "contains"
function, as is done in other places in the Loop class, since "contains"
does a linear search. Also, don't call verifyLoop from LoopSimplify or
LCSSA, as the PassManager is already calling verifyLoop as part of
LoopInfo's verifyAnalysis.

llvm-svn: 81221
 2009-09-08 15:45:00 +00:00
Evan Cheng
a191202da5 Revert r80926. It causes loop unswitch assertion and slow down some JIT tests significantly. 
llvm-svn: 81101
 2009-09-06 02:26:10 +00:00
Dan Gohman
7296225414 Add a verifyAnalysis to LoopInfo, LoopSimplify, and LCSSA form that verify 
that these passes are properly preserved.

Fix several transformation passes that claimed to preserve LoopSimplify
form but weren't.

llvm-svn: 80926
 2009-09-03 16:31:42 +00:00
Owen Anderson
93ccaf5c60 Move more code back to 2.5 APIs. 
llvm-svn: 77635
 2009-07-30 23:03:37 +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
977aa11bc6 More LLVMContext-ification. 
llvm-svn: 74807
 2009-07-05 22:41:43 +00:00
Dan Gohman
ba8760719f Fix LCSSA to avoid emitting a PHI node for the unwind destination of 
an invoke instruction, since the value isn't really live across that
edge.

llvm-svn: 74242
 2009-06-26 00:31:13 +00:00
Owen Anderson
309568c469 Real fix for PR3549, by using caching for predecessor counts in addition to the predecessors themselves. This halves the time 
to optimize the testcase, beyond what my previous patch did.

llvm-svn: 69792
 2009-04-22 08:50:12 +00:00
Owen Anderson
b36babc111 Use PredIteratorCache in LCSSA, which gives a 37% overall speedup on the testcase from PR3549. More improvements to come. 
llvm-svn: 69788
 2009-04-22 08:09:13 +00:00
Gabor Greif
fbd40904c1 Simplify the logic of getting hold of a PHI predecessor block. 
There is now a direct way from value-use-iterator to incoming block in PHINode's API.
This way we avoid the iterator->index->iterator trip, and especially the costly
getOperandNo() invocation. Additionally there is now an assertion that the iterator
really refers to one of the PHI's Uses.

llvm-svn: 62869
 2009-01-23 19:40:15 +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
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
6564581be0 Enable first-class aggregates support. 
Remove the GetResultInst instruction. It is still accepted in LLVM assembly
and bitcode, where it is now auto-upgraded to ExtractValueInst. Also, remove
support for return instructions with multiple values. These are auto-upgraded
to use InsertValueInst instructions.

The IRBuilder still accepts multiple-value returns, and auto-upgrades them
to InsertValueInst instructions.

llvm-svn: 53941
 2008-07-23 00:34:11 +00:00
Dan Gohman
5c60e1fdff Fix whitespace in whitespace-significant pseudocode in a comment. 
llvm-svn: 51890
 2008-06-03 00:57:21 +00:00
Owen Anderson
40022e00ef Since LCSSA switched over to DenseMap, we have to be more careful to avoid iterator invalidation. Fixes PR2385. 
llvm-svn: 51777
 2008-05-30 17:31:01 +00:00
Owen Anderson
15d473d75a Use a DenseMap instead of an std::map, speeding up the testcase in PR2368 by about a third. 
llvm-svn: 51565
 2008-05-26 10:07:43 +00:00
Dan Gohman
8b6f4366ae Tidy up BasicBlock::getFirstNonPHI, and change a bunch of places to 
use it instead of duplicating its functionality.

llvm-svn: 51499
 2008-05-23 21:05:58 +00:00
Gabor Greif
48ffb6c7dc Fix a bunch of 80col violations that arose from the Create API change. Tweak makefile targets to find these better. 
llvm-svn: 51143
 2008-05-15 10:04:30 +00:00
Dan Gohman
138a53b303 Change class' public PassInfo variables to by initialized with the 
address of the PassInfo directly instead of calling getPassInfo.
This eliminates a bunch of dynamic initializations of static data.

Also, fold RegisterPassBase into PassInfo, make a bunch of its
data members const, and rearrange some code to initialize data
members in constructors instead of using setter member functions.

llvm-svn: 51022
 2008-05-13 02:05:11 +00:00
Dan Gohman
bab18cae46 Clean up the use of static and anonymous namespaces. This turned up 
several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017
 2008-05-13 00:00:25 +00:00
Devang Patel
e8518dd7ff Handle multiple return values. 
llvm-svn: 50604
 2008-05-03 01:12:15 +00:00
Gabor Greif
6c6b8a57f3 API changes for class Use size reduction, wave 1. 
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277
 2008-04-06 20:25:17 +00:00
Anton Korobeynikov
c41f5b6af4 Fix newly-introduced 4.3 warnings 
llvm-svn: 47375
 2008-02-20 12:07:57 +00:00
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Devang Patel
f06e667e9c Use SmallVector instead of std::vector. 
llvm-svn: 41207
 2007-08-21 00:31:24 +00:00
Devang Patel
fded73828f When one branch of condition is eliminated then head of the other 
branch is not necessary immediate dominators of merge blcok in all cases.

llvm-svn: 41144
 2007-08-17 21:59:16 +00:00
Devang Patel
1b2732c880 LCSSA preserves dom info. 
llvm-svn: 40604
 2007-07-30 20:23:45 +00:00
Devang Patel
4020116257 Now this temp. fix is not required. 
llvm-svn: 40034
 2007-07-19 02:22:21 +00:00
Reid Spencer
9496d63260 Return Undef if the block has no dominator. This was required to allow 
llvm-gcc build to succeed. Without this change it fails in libstdc++
compilation. This causes no regressions in dejagnu tests. However, 
someone who knows this code better might want to review it.

llvm-svn: 39924
 2007-07-16 21:03:44 +00:00
Devang Patel
9166ad7658 Make LCSSA a loop pass. 
llvm-svn: 39844
 2007-07-13 23:57:11 +00:00
Devang Patel
babcd06827 Maintain ETNode as part of DomTreeNode. 
This adds redundancy for now.

llvm-svn: 37492
 2007-06-07 17:47:21 +00:00
Devang Patel
2ef6caf14f s/llvm::DominatorTreeBase::DomTreeNode/llvm::DomTreeNode/g 
llvm-svn: 37407
 2007-06-04 00:32:22 +00:00
Devang Patel
d58b82f83a s/DominatorTreeBase::Node/DominatorTreeBase:DomTreeNode/g 
llvm-svn: 37403
 2007-06-03 06:26:14 +00:00
Dan Gohman
167379e73a Fix typos. 
llvm-svn: 36994
 2007-05-11 21:10:54 +00:00
Nick Lewycky
c2306ff5b4 Fix typo in comment. 
llvm-svn: 36873
 2007-05-06 13:37:16 +00:00
Devang Patel
cd45427a87 Drop 'const' 
llvm-svn: 36662
 2007-05-03 01:11:54 +00:00
Devang Patel
8ee9065162 Use 'static const char' instead of 'static const int'. 
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652
 2007-05-02 21:39:20 +00:00
Devang Patel
38a66bc82e Do not use typeinfo to identify pass in pass manager. 
llvm-svn: 36632
 2007-05-01 21:15:47 +00:00
Evan Cheng
91e0637ed3 Revert Owen's last check-in. This is breaking Mac OS X / PPC llvm-gcc bootstrap. 
llvm-svn: 36258
 2007-04-18 22:39:00 +00:00
Owen Anderson
909895b564 Use ETForest instead of DominatorTree. 
llvm-svn: 36247
 2007-04-18 04:39:32 +00:00
Chris Lattner
7928216e38 avoid copying sets and vectors around. 
llvm-svn: 36017
 2007-04-14 22:10:17 +00:00
Reid Spencer
8749d297f5 Apply the VISIBILITY_HIDDEN field to the remaining anonymous classes in 
the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939
 2007-02-05 23:32:05 +00:00
Reid Spencer
21f40213a8 For PR1177: 
Revert last patch which caused iteration invalidation.

llvm-svn: 33901
 2007-02-05 05:23:32 +00:00
Owen Anderson
0fbb2d629f Use DenseMap for pointer->pointer maps. 
llvm-svn: 33897
 2007-02-05 02:39:47 +00:00
Chris Lattner
4d19c9634d switch more statistics over to STATISTIC, eliminating static ctors. Also, 
delete some dead ones.

llvm-svn: 32694
 2006-12-19 22:17:40 +00:00
Chris Lattner
a531ce882e Detemplatize the Statistic class. The only type it is instantiated with 
is 'unsigned'.

llvm-svn: 32279
 2006-12-06 17:46:33 +00:00