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b5c26ef9da
llvm-6502/include/llvm/Analysis
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Andrew Trick b5c26ef9da SCEVExpander fixes. Affects LSR and indvars. 
LSR has gradually been improved to more aggressively reuse existing code, particularly existing phi cycles. This exposed problems with the SCEVExpander's sloppy treatment of its insertion point. I applied some rigor to the insertion point problem that will hopefully avoid an endless bug cycle in this area. Changes:

- Always used properlyDominates to check safe code hoisting.

- The insertion point provided to SCEV is now considered a lower bound. This is usually a block terminator or the use itself. Under no cirumstance may SCEVExpander insert below this point.

- LSR is reponsible for finding a "canonical" insertion point across expansion of different expressions.

- Robust logic to determine whether IV increments are in "expanded" form and/or can be safely hoisted above some insertion point.

Fixes PR11783: SCEVExpander assert.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148535 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-20 07:41:13 +00:00
..
AliasAnalysis.h Fix extra whitespace in comment. 2011-10-15 19:36:45 +00:00
AliasSetTracker.h Fix AliasSetTracker so that it doesn't make any assumptions about instructions it doesn't know about (like the atomic instructions I'm adding). 2011-07-27 00:46:46 +00:00
BlockFrequencyImpl.h Add some constantness to BranchProbabilityInfo and BlockFrequnencyInfo. 2011-12-20 20:03:10 +00:00
BlockFrequencyInfo.h Add some constantness to BranchProbabilityInfo and BlockFrequnencyInfo. 2011-12-20 20:03:10 +00:00
BranchProbabilityInfo.h Remove return heuristics from the static branch probabilities, and 2011-10-24 12:01:08 +00:00
CallGraph.h Teach the CallGraph to ignore calls to intrinsics. 2011-06-09 19:46:27 +00:00
CaptureTracking.h Move includes to the .cpp file. 2012-01-17 22:16:31 +00:00
CFGPrinter.h Remove all remaining uses of Value::getNameStr(). 2011-11-15 16:27:03 +00:00
CodeMetrics.h Fix grammar error noticed by Duncan. 2011-12-29 02:15:06 +00:00
ConstantFolding.h Propagate TargetLibraryInfo throughout ConstantFolding.cpp and 2011-12-01 03:08:23 +00:00
ConstantsScanner.h eliminate all 80-col violations that I have introduced in my recent checkins (and some others more) 2009-08-27 23:44:33 +00:00
DebugInfo.h Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
DIBuilder.h Add a new wrapper node for a DILexicalBlock that encapsulates it and a 2011-10-11 22:59:11 +00:00
DominanceFrontier.h Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch 2011-12-20 02:50:00 +00:00
DominatorInternals.h Change the Dominators recalculate() function to only rely on GraphTraits 2011-12-05 19:17:04 +00:00
Dominators.h SCEVExpander fixes. Affects LSR and indvars. 2012-01-20 07:41:13 +00:00
DomPrinter.h add function passes for printing various dominator datastructures 2009-10-18 04:10:40 +00:00
DOTGraphTraitsPass.h Remove all remaining uses of Value::getNameStr(). 2011-11-15 16:27:03 +00:00
FindUsedTypes.h land David Blaikie's patch to de-constify Type, with a few tweaks. 2011-07-18 04:54:35 +00:00
InlineCost.h Make headers standalone. 2011-11-14 17:45:03 +00:00
InstructionSimplify.h Propagate TargetLibraryInfo throughout ConstantFolding.cpp and 2011-12-01 03:08:23 +00:00
Interval.h Change Pass::print to take a raw ostream instead of std::ostream, 2009-08-23 06:03:38 +00:00
IntervalIterator.h Use std::vector rather than SmallVector here because SmallVector 2010-07-08 13:06:08 +00:00
IntervalPartition.h Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 2010-10-19 17:21:58 +00:00
IVUsers.h Put all IVUsers in the processed set. Allow querying IVUsers with isIVUserOrOperand. 2012-01-06 21:41:55 +00:00
LazyValueInfo.h Fix a few more places where TargetData/TargetLibraryInfo is not being passed. 2011-12-02 01:26:24 +00:00
LibCallAliasAnalysis.h Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 2010-10-19 17:21:58 +00:00
LibCallSemantics.h Remove the experimental AliasAnalysis::getDependency interface, which 2010-09-14 21:25:10 +00:00
Lint.h Remove unused STL header includes. 2011-04-23 19:53:52 +00:00
Loads.h Move FindAvailableLoadedValue isSafeToLoadUnconditionally out of 2010-05-28 16:19:17 +00:00
LoopDependenceAnalysis.h Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 2010-10-19 17:21:58 +00:00
LoopInfo.h Simplify more DenseMap.find users. 2012-01-04 21:41:24 +00:00
LoopIterator.h Cleanup. Remove an extraneous GraphTraits specialization. 2011-08-10 22:55:39 +00:00
LoopPass.h Reapply r138695. Fix PassManager stack depths. 2011-08-29 17:07:00 +00:00
MemoryBuiltins.h land David Blaikie's patch to de-constify Type, with a few tweaks. 2011-07-18 04:54:35 +00:00
MemoryDependenceAnalysis.h Refactor capture tracking (which already had a couple flags for whether returns 2011-11-14 22:49:42 +00:00
Passes.h The ARC language-specific optimizer. Credit to Dan Gohman. 2011-06-15 23:37:01 +00:00
PathNumbering.h Implementation of path profiling. 2011-01-29 01:09:53 +00:00
PathProfileInfo.h Remove unused STL header includes. 2011-04-23 19:53:52 +00:00
PHITransAddr.h Propagate TargetLibraryInfo throughout ConstantFolding.cpp and 2011-12-01 03:08:23 +00:00
PostDominators.h remove postdom frontiers, because it is dead. Forward dom frontiers are 2011-04-05 21:57:17 +00:00
ProfileInfo.h Convert debug messages to use dbgs(). Generally this means 2009-12-23 17:55:11 +00:00
ProfileInfoLoader.h Reapplied r81355 with the problems fixed. 2009-09-16 11:35:50 +00:00
ProfileInfoTypes.h This is #included by .c files. Remove C++-style comments. 2011-01-29 21:54:26 +00:00
RegionInfo.h Missed some users of Value::getNameStr. 2011-11-15 18:30:06 +00:00
RegionIterator.h Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
RegionPass.h Reapply r138695. Fix PassManager stack depths. 2011-08-29 17:07:00 +00:00
RegionPrinter.h Add new RegionInfo pass. 2010-07-22 07:46:31 +00:00
ScalarEvolution.h Clarified the SCEV getSmallConstantTripCount interface with in-your-face comments. 2012-01-11 06:52:55 +00:00
ScalarEvolutionExpander.h SCEVExpander fixes. Affects LSR and indvars. 2012-01-20 07:41:13 +00:00
ScalarEvolutionExpressions.h land David Blaikie's patch to de-constify Type, with a few tweaks. 2011-07-18 04:54:35 +00:00
ScalarEvolutionNormalization.h Generalize IVUsers to track arbitrary expressions rather than expressions 2010-04-07 22:27:08 +00:00
SparsePropagation.h Eliminate unnecessary LLVMContexts. 2009-12-18 23:42:08 +00:00
Trace.h eliminate the "Value" printing methods that print to a std::ostream. 2009-08-23 04:37:46 +00:00
ValueTracking.h Generalize isSafeToSpeculativelyExecute to work on arbitrary 2012-01-04 23:01:09 +00:00
Verifier.h Fix a comment. 2010-04-08 17:41:04 +00:00