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81 Commits

Author SHA1 Message Date
Dan Gohman
885c46e387 Delete an unused member variable. 
llvm-svn: 86160
 2009-11-05 19:33:15 +00:00
Chris Lattner
71d353dd48 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
101dde30ed 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
f30a2b0c86 random tidying 
llvm-svn: 83701
 2009-10-10 06:22:45 +00:00
Dan Gohman
7d3b0be05b Remove a redundant #ifndef and add an assertion string. 
llvm-svn: 82991
 2009-09-28 14:38:19 +00:00
Dan Gohman
3ddbc242fb 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
904199547b 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
4c1bdcf5d7 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
b292b8ce70 Move more code back to 2.5 APIs. 
llvm-svn: 77635
 2009-07-30 23:03:37 +00:00
Owen Anderson
47db941fd3 Get rid of the Pass+Context magic. 
llvm-svn: 76702
 2009-07-22 00:24:57 +00:00
Owen Anderson
e70b637033 More LLVMContext-ification. 
llvm-svn: 74807
 2009-07-05 22:41:43 +00:00
Dan Gohman
7eaf50ecac 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
6cbf5bb9bb 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
bb754826c9 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
eb61fcf2a1 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
7f39e2d85a 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
a79db30d28 Tidy up several unbeseeming casts from pointer to intptr_t. 
llvm-svn: 55779
 2008-09-04 17:05:41 +00:00
Dan Gohman
fa1211f69b 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
2ad7e7341c Fix whitespace in whitespace-significant pseudocode in a comment. 
llvm-svn: 51890
 2008-06-03 00:57:21 +00:00
Owen Anderson
1f59d9937f 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
d3f21d165f 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
f96e1371e8 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
697e94cc22 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
0479aa5c0b 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
d78c400b5b 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
fa0e3c4a92 Handle multiple return values. 
llvm-svn: 50604
 2008-05-03 01:12:15 +00:00
Gabor Greif
e9ecc68d8f 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
18991d78fa Fix newly-introduced 4.3 warnings 
llvm-svn: 47375
 2008-02-20 12:07:57 +00:00
Chris Lattner
f3ebc3f3d2 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Devang Patel
b5933bbbd5 Use SmallVector instead of std::vector. 
llvm-svn: 41207
 2007-08-21 00:31:24 +00:00
Devang Patel
d1fcfcc76c 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
c5e340eded LCSSA preserves dom info. 
llvm-svn: 40604
 2007-07-30 20:23:45 +00:00
Devang Patel
de5901523c Now this temp. fix is not required. 
llvm-svn: 40034
 2007-07-19 02:22:21 +00:00
Reid Spencer
3363f4ad96 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
4cd1413f15 Make LCSSA a loop pass. 
llvm-svn: 39844
 2007-07-13 23:57:11 +00:00
Devang Patel
af41e4a192 Maintain ETNode as part of DomTreeNode. 
This adds redundancy for now.

llvm-svn: 37492
 2007-06-07 17:47:21 +00:00
Devang Patel
bdd1aaef10 s/llvm::DominatorTreeBase::DomTreeNode/llvm::DomTreeNode/g 
llvm-svn: 37407
 2007-06-04 00:32:22 +00:00
Devang Patel
0e8aa7b69a s/DominatorTreeBase::Node/DominatorTreeBase:DomTreeNode/g 
llvm-svn: 37403
 2007-06-03 06:26:14 +00:00
Dan Gohman
b5650ebd6a Fix typos. 
llvm-svn: 36994
 2007-05-11 21:10:54 +00:00
Nick Lewycky
e7da2d6ac3 Fix typo in comment. 
llvm-svn: 36873
 2007-05-06 13:37:16 +00:00
Devang Patel
8c78a0bff0 Drop 'const' 
llvm-svn: 36662
 2007-05-03 01:11:54 +00:00
Devang Patel
e95c6ad802 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
09f162ca6a Do not use typeinfo to identify pass in pass manager. 
llvm-svn: 36632
 2007-05-01 21:15:47 +00:00
Evan Cheng
db9b65d67a 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
f38f2f2394 Use ETForest instead of DominatorTree. 
llvm-svn: 36247
 2007-04-18 04:39:32 +00:00
Chris Lattner
a6b5660209 avoid copying sets and vectors around. 
llvm-svn: 36017
 2007-04-14 22:10:17 +00:00
Reid Spencer
557ab15e71 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
a1d35926b7 For PR1177: 
Revert last patch which caused iteration invalidation.

llvm-svn: 33901
 2007-02-05 05:23:32 +00:00
Owen Anderson
f6fa108993 Use DenseMap for pointer->pointer maps. 
llvm-svn: 33897
 2007-02-05 02:39:47 +00:00
Chris Lattner
45f966d80f 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