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Arnold Schwaighofer 23463c9261 PR15967 Fix in basicaa for faulty returning no alias. 
This commit consist of two parts.
The first part fix the PR15967. The wrong conclusion was made when the MaxLookup
limit was reached. The fix introduce a out parameter (MaxLookupReached) to
DecomposeGEPExpression that the function aliasGEP can act upon.
The second part is introducing the constant MaxLookupSearchDepth to make sure
that DecomposeGEPExpression and GetUnderlyingObject use the same search depth.
This is a small cleanup to clarify the original algorithm.

Patch by Karl-Johan Karlsson!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204859 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-26 21:30:19 +00:00
..
BasicAA PR15967 Fix in basicaa for faulty returning no alias. 2014-03-26 21:30:19 +00:00
BlockFrequencyInfo [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
BranchProbabilityInfo Consider (x == -1) unlikely in BranchProbabilityInfo 2013-11-01 10:58:22 +00:00
CallGraph [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
CostModel When analyzing vectors of element type that require legalization, 2014-03-10 22:59:13 +00:00
Delinearization delinearization of arrays 2013-11-12 22:47:20 +00:00
DependenceAnalysis add -da-delinearize runs and checks to MIV testcases 2014-02-21 18:15:18 +00:00
Dominators [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
GlobalsModRef BasicAA: Use reachabilty instead of dominance for checking value equality in phi 2014-01-03 05:47:03 +00:00
LazyCallGraph [PM] Add a new "lazy" call graph analysis pass for the new pass manager. 2014-02-06 04:37:03 +00:00
Lint Teach lint about address spaces 2014-03-06 17:33:55 +00:00
LoopInfo FileCheck-ize tests. 2013-08-22 00:51:19 +00:00
MemoryDependenceAnalysis [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
PostDominators FileCheck-ize tests. 2013-08-22 00:51:19 +00:00
RegionInfo [tests] Cleanup initialization of test suffixes. 2013-08-16 00:37:11 +00:00
ScalarEvolution ScalarEvolution: Compute exit counts for loops with a power-of-2 step. 2014-03-25 16:25:12 +00:00
TypeBasedAliasAnalysis Fix known typos 2014-01-24 17:20:08 +00:00