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llvm-6502/include/llvm/Analysis
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Wan Xiaofei 887f9c5ec1 Quick look-up for block in loop. 
This patch implements quick look-up for block in loop by maintaining a hash set for blocks.
It improves the efficiency of loop analysis a lot, the biggest improvement could be 5-6%(458.sjeng).
Below are the compilation time for our benchmark in llc before & after the patch.

Benchmark	llc - trunk		llc - patched	
401.bzip2	0.339081	100.00%	0.329657	102.86%
403.gcc		19.853966	100.00%	19.605466	101.27%
429.mcf		0.049823	100.00%	0.048451	102.83%
433.milc	0.514898	100.00%	0.510217	100.92%
444.namd	1.109328	100.00%	1.103481	100.53%
445.gobmk	4.988028	100.00%	4.929114	101.20%
456.hmmer	0.843871	100.00%	0.825865	102.18%
458.sjeng	0.754238	100.00%	0.714095	105.62%
464.h264ref	2.9668		100.00%	2.90612		102.09%
471.omnetpp	4.556533	100.00%	4.511886	100.99%
bitmnp01	0.038168	100.00%	0.0357		106.91%
idctrn01	0.037745	100.00%	0.037332	101.11%
libquake2	3.78689		100.00%	3.76209		100.66%
libquake_	2.251525	100.00%	2.234104	100.78%
linpack		0.033159	100.00%	0.032788	101.13%
matrix01	0.045319	100.00%	0.043497	104.19%
nbench		0.333161	100.00%	0.329799	101.02%
tblook01	0.017863	100.00%	0.017666	101.12%
ttsprk01	0.054337	100.00%	0.053057	102.41%

Reviewer	: Andrew Trick <atrick@apple.com>, Hal Finkel <hfinkel@anl.gov>
Approver	: Andrew Trick <atrick@apple.com>
Test		: Pass make check-all & llvm test-suite


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193460 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-26 03:08:02 +00:00
..
AliasAnalysis.h Make BasicAliasAnalysis recognize the fact a noalias argument cannot alias another argument, even if the other argument is not itself marked noalias. 2013-05-28 08:17:48 +00:00
AliasSetTracker.h Remove unneeded #includes. 2013-03-18 23:33:44 +00:00
BlockFrequencyImpl.h Add some constantness. 2013-08-20 23:04:15 +00:00
BlockFrequencyInfo.h Fixed 80+ violation and added C++ to header. 2013-07-12 23:09:43 +00:00
BranchProbabilityInfo.h Add a new function attribute 'cold' to functions. 2013-05-24 12:26:52 +00:00
CallGraph.h Call destroy from ~BasicCallGraph. 2013-10-25 15:01:34 +00:00
CallGraphSCCPass.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
CallPrinter.h Added -view-callgraph module pass. 2013-01-11 17:28:14 +00:00
CaptureTracking.h Remove unneeded #includes. Use forward declarations instead. 2013-03-10 00:34:01 +00:00
CFG.h Add some constantness. 2013-08-20 23:04:15 +00:00
CFGPrinter.h Move all of the header files which are involved in modelling the LLVM IR 2013-01-02 11:36:10 +00:00
CodeMetrics.h Switch CodeMetrics itself over to use TTI to determine if an instruction 2013-01-21 13:04:33 +00:00
ConstantFolding.h Add missing -*- C++ -*- to headers 2013-05-17 21:43:39 +00:00
ConstantsScanner.h
DependenceAnalysis.h Use SmallVectorImpl& instead of SmallVector to avoid repeating small vector size. 2013-07-14 04:42:23 +00:00
DominanceFrontier.h
DominatorInternals.h Sort the #include lines for the include/... tree with the script. 2012-12-03 17:02:12 +00:00
Dominators.h Add function DominatorTree::getDescendants(). 2013-09-19 17:18:35 +00:00
DomPrinter.h
DOTGraphTraitsPass.h Remove redundant 'llvm::' qualifications 2013-01-13 16:01:15 +00:00
FindUsedTypes.h
InlineCost.h Remove unneeded #include. 2013-06-06 23:34:11 +00:00
InstructionSimplify.h Fix missing -*- C++ -*-s 2013-08-06 00:16:21 +00:00
Interval.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
IntervalIterator.h Fix a few typos in comments. 2013-03-05 22:05:16 +00:00
IntervalPartition.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
IVUsers.h Remove duplicated forward declaration. 2013-03-06 00:04:32 +00:00
LazyValueInfo.h Move TargetData to DataLayout. 2012-10-08 16:38:25 +00:00
LibCallAliasAnalysis.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
LibCallSemantics.h Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767 2012-09-27 10:14:43 +00:00
Lint.h
Loads.h Move all of the header files which are involved in modelling the LLVM IR 2013-01-02 11:36:10 +00:00
LoopInfo.h Quick look-up for block in loop. 2013-10-26 03:08:02 +00:00
LoopInfoImpl.h Quick look-up for block in loop. 2013-10-26 03:08:02 +00:00
LoopIterator.h Remove unneeded #includes. 2013-02-09 13:29:10 +00:00
LoopPass.h LoopPass.h doesn't require Function.h. Remove unneeded #include. 2013-01-11 01:03:32 +00:00
MemoryBuiltins.h fix PR17635: false positive with packed structures 2013-10-24 09:17:24 +00:00
MemoryDependenceAnalysis.h Memory Dependence Analysis (not mem-dep test) take advantage of "invariant.load" metadata. 2013-03-06 17:48:48 +00:00
Passes.h Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
PHITransAddr.h Move all of the header files which are involved in modelling the LLVM IR 2013-01-02 11:36:10 +00:00
PostDominators.h Add a const version of findNearestCommonDominator to PostDom for convenience. 2013-06-09 15:09:30 +00:00
PtrUseVisitor.h Move all of the header files which are involved in modelling the LLVM IR 2013-01-02 11:36:10 +00:00
RegionInfo.h RegionInfo: Add helpers to replace entry/exit recursively 2013-04-10 06:54:49 +00:00
RegionIterator.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
RegionPass.h Fix a typo (ouput => output) 2013-05-17 12:31:43 +00:00
RegionPrinter.h
ScalarEvolution.h Remove unused SCEV functions 2013-10-21 18:08:09 +00:00
ScalarEvolutionExpander.h Fix SCEVExpander: don't try to expand quadratic recurrences outside a loop. 2013-10-25 21:35:56 +00:00
ScalarEvolutionExpressions.h Pacify -Wnon-virtual-dtor 2013-02-15 23:51:59 +00:00
ScalarEvolutionNormalization.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
SparsePropagation.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
TargetTransformInfo.h Speling fixes. 2013-10-22 15:18:03 +00:00
Trace.h Fix include guards so they exactly match file names. 2013-01-10 00:45:19 +00:00
ValueTracking.h Teach MemoryBuiltins and InstructionSimplify that operator new never returns NULL. 2013-09-24 16:37:51 +00:00
Verifier.h