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78 Commits

Author SHA1 Message Date
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
Chris Lattner
02e43b65d1 improve comment. 
llvm-svn: 85725
 2009-11-01 18:17:37 +00:00
Chris Lattner
ea1bebaa65 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
2b8400628d 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
711c726c97 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
0357e0117e 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
e4a3a33579 Preserve ProfileInfo. 
llvm-svn: 81360
 2009-09-09 17:53:39 +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
9df206d02d Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Torok Edwin
f955a6ef49 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
ae8a3ff177 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
aee16d4916 Rename getAnalysisToUpdate to getAnalysisIfAvailable. 
llvm-svn: 63198
 2009-01-28 13:14:17 +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
Owen Anderson
2a072a6923 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
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
Chris Lattner
45b3ace5a3 fit in 80 cols 
llvm-svn: 50014
 2008-04-21 00:19:16 +00:00
Scott Michel
31b3639a2d Remove unused variable 
llvm-svn: 49838
 2008-04-17 01:30:44 +00:00
Scott Michel
4b37c88f48 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
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
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Owen Anderson
43d4a82d4b 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
d1d0316041 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
b5554f450a Do not preserve ETForest. 
llvm-svn: 37506
 2007-06-08 00:02:08 +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
74785c1f3c s/DominatorTree::createNewNode/DominatorTree::addNewBlock/g 
llvm-svn: 37415
 2007-06-04 16:43:25 +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
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
Chris Lattner
8e28e7654d remove use of BasicBlock::getNext 
llvm-svn: 36205
 2007-04-17 18:09:47 +00:00
Owen Anderson
ea857029ea 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
e2add101a4 BreakCriticalEdges does still preserve DominatorTree. 
llvm-svn: 35729
 2007-04-07 05:57:09 +00:00
Owen Anderson
eb184ee17b 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
e7c5d04b53 Fix Analysis/Dominators/2006-10-02-BreakCritEdges.ll 
llvm-svn: 33210
 2007-01-15 00:15:09 +00:00
Chris Lattner
9801f36d97 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
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
Chris Lattner
65f872288d add option to isCriticalEdge 
llvm-svn: 31258
 2006-10-28 06:58:17 +00:00
Chris Lattner
85bc826ca6 Expose a smarter way to break critical edges. 
llvm-svn: 31256
 2006-10-28 06:44:56 +00:00
Chris Lattner
c8225bc92a 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
bfbe137f4c 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
a39dcb5377 eliminate RegisterOpt. It does the same thing as RegisterPass. 
llvm-svn: 29925
 2006-08-27 22:42:52 +00:00
Chris Lattner
33bd5dcfb7 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h| 
llvm-svn: 29911
 2006-08-27 12:54:02 +00:00
Chris Lattner
496bd3fbf6 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
d726328ee9 Preserve and update ETForest. Patch by Daniel Berlin 
llvm-svn: 25203
 2006-01-11 05:11:13 +00:00