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| -rw-r--r-- | llvm/include/llvm/Analysis/LoopAccessAnalysis.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/include/llvm/Analysis/LoopAccessAnalysis.h b/llvm/include/llvm/Analysis/LoopAccessAnalysis.h index 909429415ab..77d412a4f92 100644 --- a/llvm/include/llvm/Analysis/LoopAccessAnalysis.h +++ b/llvm/include/llvm/Analysis/LoopAccessAnalysis.h @@ -503,6 +503,13 @@ private: /// generates run-time checks to prove independence. This is done by /// AccessAnalysis::canCheckPtrAtRT and the checks are maintained by the /// RuntimePointerCheck class. +/// +/// If pointers can wrap or can't be expressed as affine AddRec expressions by +/// ScalarEvolution, we will generate run-time checks by emitting a +/// SCEVUnionPredicate. +/// +/// Checks for both memory dependences and SCEV predicates must be emitted in +/// order for the results of this analysis to be valid. class LoopAccessInfo { public: LoopAccessInfo(Loop *L, ScalarEvolution *SE, const DataLayout &DL, |
