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78 Commits

Author SHA1 Message Date
Dan Gohman 18fa5686f6 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
Chris Lattner 249f96e339 improve comment. 
llvm-svn: 85725
 2009-11-01 18:17:37 +00:00
Chris Lattner ba364b0a9a update the comment above llvm::SplitCriticalEdge, and make 
it abort on IndirectBrInst as describe in the comment.

llvm-svn: 85688
 2009-10-31 21:51:10 +00:00
Nick Lewycky 974e12b2d3 Remove includes of Support/Compiler.h that are no longer needed after the 
VISIBILITY_HIDDEN removal.

llvm-svn: 85043
 2009-10-25 06:57:41 +00:00
Nick Lewycky 02d5f77d26 Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.

llvm-svn: 85042
 2009-10-25 06:33:48 +00:00
Dan Gohman ec4557f324 Fix SplitCriticalEdge to properly update LCSSA form when splitting a 
loop exit edge -- new PHIs may be needed not only for the additional
splits that are made to preserve LoopSimplify form, but also for the
original split. Factor out the code that inserts new PHIs so that it
can be used for both. Remove LoopRotation.cpp's code for manually
updating LCSSA form, as it is now redundant. This fixes PR4934.

llvm-svn: 81363
 2009-09-09 18:18:18 +00:00
Andreas Neustifter 4c0b2847ef Preserve ProfileInfo. 
llvm-svn: 81360
 2009-09-09 17:53:39 +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 55f1c09e31 Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Torok Edwin fbcc663cbf llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable. 
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640
 2009-07-14 16:55:14 +00:00
Torok Edwin 56d0659726 assert(0) -> LLVM_UNREACHABLE. 
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379
 2009-07-11 20:10:48 +00:00
Duncan Sands 5a913d61e3 Rename getAnalysisToUpdate to getAnalysisIfAvailable. 
llvm-svn: 63198
 2009-01-28 13:14:17 +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
Owen Anderson 2df82e7cec LoopIndexSplit can sometimes result in cases where a block in its own domfrontier. 
Don't crash when we encounter one of these.

llvm-svn: 51915
 2008-06-03 18:29:48 +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
Chris Lattner 38806c3e9c fit in 80 cols 
llvm-svn: 50014
 2008-04-21 00:19:16 +00:00
Scott Michel 376acf4aaa Remove unused variable 
llvm-svn: 49838
 2008-04-17 01:30:44 +00:00
Scott Michel f66cb3696a Workaround for PR2207, in which pred_iterator assert gets triggered due to a 
wee problem in Xcode 2.[45]/gcc 4.0.1.

llvm-svn: 49831
 2008-04-16 23:46:39 +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
Chris Lattner f3ebc3f3d2 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Owen Anderson b0dd27ee91 Make LoopInfoBase more generic, in preparation for having MachineLoopInfo. This involves a small interface change. 
llvm-svn: 44348
 2007-11-27 03:43:35 +00:00
Devang Patel da48cf40db If NewBB dominates DestBB then DestBB is not part of NewBB's dominance frontier. 
llvm-svn: 41051
 2007-08-13 21:59:17 +00:00
Devang Patel 8ecffa996a Do not preserve ETForest. 
llvm-svn: 37506
 2007-06-08 00:02:08 +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 ebc5b96735 s/DominatorTree::createNewNode/DominatorTree::addNewBlock/g 
llvm-svn: 37415
 2007-06-04 16:43:25 +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
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
Chris Lattner 233f97ac6a remove use of BasicBlock::getNext 
llvm-svn: 36205
 2007-04-17 18:09:47 +00:00
Owen Anderson f35a1dbc7a Remove ImmediateDominator analysis. The same information can be obtained from DomTree. A lot of code for 
constructing ImmediateDominator is now folded into DomTree construction.

This is part of the ongoing work for PR217.

llvm-svn: 36063
 2007-04-15 08:47:27 +00:00
Owen Anderson d03a646f06 BreakCriticalEdges does still preserve DominatorTree. 
llvm-svn: 35729
 2007-04-07 05:57:09 +00:00
Owen Anderson b39d9ca902 Expunge DomSet from BreakCriticalEdges. This is part of the continuing 
work for PR 1171.

llvm-svn: 35728
 2007-04-07 05:49:29 +00:00
Chris Lattner f739d01059 Fix Analysis/Dominators/2006-10-02-BreakCritEdges.ll 
llvm-svn: 33210
 2007-01-15 00:15:09 +00:00
Chris Lattner 9818a6fd76 Fix PR1110 and Analysis/Dominators/2007-01-14-BreakCritEdges.ll by being 
more careful about unreachable code when updating dominator info.

llvm-svn: 33204
 2007-01-14 18:33:35 +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
Chris Lattner 700b873130 Detemplatize the Statistic class. The only type it is instantiated with 
is 'unsigned'.

llvm-svn: 32279
 2006-12-06 17:46:33 +00:00
Chris Lattner 3e763f5708 add option to isCriticalEdge 
llvm-svn: 31258
 2006-10-28 06:58:17 +00:00
Chris Lattner 80ea207bfa Expose a smarter way to break critical edges. 
llvm-svn: 31256
 2006-10-28 06:44:56 +00:00
Chris Lattner 52886e72d7 This case isn't implemented yet. It seems unlikely to be needed, but if it 
ever is, we want to get an assert instead of silent bad codegen.

llvm-svn: 30716
 2006-10-04 04:58:58 +00:00
Chris Lattner 8aca0ee8c3 Fix PR932 and Analysis/Dominators/2006-10-02-BreakCritEdges.ll: 
The critical edge block dominates the dest block if the destblock dominates
all edges other than the one incoming from the critical edge.

llvm-svn: 30696
 2006-10-03 07:02:02 +00:00
Chris Lattner c2d3d3112e eliminate RegisterOpt. It does the same thing as RegisterPass. 
llvm-svn: 29925
 2006-08-27 22:42:52 +00:00
Chris Lattner 3d27be1333 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h| 
llvm-svn: 29911
 2006-08-27 12:54:02 +00:00
Chris Lattner 996795b0dd Use hidden visibility to make symbols in an anonymous namespace get 
dropped.  This shrinks libllvmgcc.dylib another 67K

llvm-svn: 28975
 2006-06-28 23:17:24 +00:00
Chris Lattner 0770d8e326 Preserve and update ETForest. Patch by Daniel Berlin 
llvm-svn: 25203
 2006-01-11 05:11:13 +00:00