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
AliasSetTracker.h
BlockFrequencyImpl.h	Add some constantness.	2013-08-20 23:04:15 +00:00
BlockFrequencyInfo.h
BranchProbabilityInfo.h
CallGraph.h	Call destroy from ~BasicCallGraph.	2013-10-25 15:01:34 +00:00
CallGraphSCCPass.h
CallPrinter.h
CaptureTracking.h
CFG.h	Add some constantness.	2013-08-20 23:04:15 +00:00
CFGPrinter.h
CodeMetrics.h
ConstantFolding.h
ConstantsScanner.h
DependenceAnalysis.h
DominanceFrontier.h
DominatorInternals.h
Dominators.h	Add function DominatorTree::getDescendants().	2013-09-19 17:18:35 +00:00
DomPrinter.h
DOTGraphTraitsPass.h
FindUsedTypes.h
InlineCost.h
InstructionSimplify.h	Fix missing -*- C++ -*-s	2013-08-06 00:16:21 +00:00
Interval.h
IntervalIterator.h
IntervalPartition.h
IVUsers.h
LazyValueInfo.h
LibCallAliasAnalysis.h
LibCallSemantics.h
Lint.h
Loads.h
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
LoopPass.h
MemoryBuiltins.h	fix PR17635: false positive with packed structures	2013-10-24 09:17:24 +00:00
MemoryDependenceAnalysis.h
Passes.h	Remove the very substantial, largely unmaintained legacy PGO	2013-10-02 15:42:23 +00:00
PHITransAddr.h
PostDominators.h
PtrUseVisitor.h
RegionInfo.h
RegionIterator.h
RegionPass.h
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
ScalarEvolutionNormalization.h
SparsePropagation.h
TargetTransformInfo.h	Speling fixes.	2013-10-22 15:18:03 +00:00
Trace.h
ValueTracking.h	Teach MemoryBuiltins and InstructionSimplify that operator new never returns NULL.	2013-09-24 16:37:51 +00:00
Verifier.h