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[LAA] Improve comment for isStridedPtr

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262997 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adam Nemet 2016-03-09 05:33:19 +00:00
parent 0f7f7def70
commit db96e9895d
1 changed files with 5 additions and 2 deletions
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7
include/llvm/Analysis/LoopAccessAnalysis.h
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@ -651,8 +651,11 @@ const SCEV *replaceSymbolicStrideSCEV(PredicatedScalarEvolution &PSE,
const ValueToValueMap &PtrToStride,
Value *Ptr, Value *OrigPtr = nullptr);
/// \brief Check the stride of the pointer and ensure that it does not wrap in
/// the address space, assuming \p Preds is true.
/// \brief If the pointer has a constant stride return it in units of its
/// element size. Otherwise return zero.
///
/// Ensure that it does not wrap in the address space, assuming \p Preds is
/// true.
///
/// If necessary this method will version the stride of the pointer according
/// to \p PtrToStride and therefore add a new predicate to \p Preds.