llvm/test/Analysis/DependenceAnalysis
Jingyue Wu ec3cfb00dc [DependenceAnalysis] Allow subscripts of different types
Summary:
Several places in DependenceAnalysis assumes both SCEVs in a subscript pair
share the same integer type. For instance, isKnownPredicate calls
SE->getMinusSCEV(X, Y) which asserts X and Y share the same type. However,
DependenceAnalysis fails to ensure this assumption when producing a subscript
pair, causing tests such as NonCanonicalizedSubscript to crash. With this
patch, DependenceAnalysis runs unifySubscriptType before producing any
subscript pair, ensuring the assumption.

Test Plan:
Added NonCanonicalizedSubscript.ll on which DependenceAnalysis before the fix
crashed because subscripts have different types.

Reviewers: spop, sebpop, jingyue

Reviewed By: jingyue

Subscribers: eliben, meheff, llvm-commits

Differential Revision: http://reviews.llvm.org/D6289

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222100 91177308-0d34-0410-b5e6-96231b3b80d8
2014-11-16 16:52:44 +00:00
..
Banerjee.ll split delinearization pass in 3 steps 2014-05-07 18:01:20 +00:00
Coupled.ll
ExactRDIV.ll
ExactSIV.ll
GCD.ll remove constant terms 2014-05-27 22:41:45 +00:00
Invariant.ll
NonCanonicalizedSubscript.ll [DependenceAnalysis] Allow subscripts of different types 2014-11-16 16:52:44 +00:00
Preliminary.ll
Propagating.ll
Separability.ll
StrongSIV.ll
SymbolicRDIV.ll improve dependence analysis testcases 2013-11-12 22:47:30 +00:00
SymbolicSIV.ll
WeakCrossingSIV.ll
WeakZeroDstSIV.ll
WeakZeroSrcSIV.ll
ZIV.ll