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NFC: Comment in TargetTransformInfo.h reformatted (by Michael Kruse).

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This commit is contained in:
Jonas Paulsson 2020-04-02 17:35:32 +02:00
parent 11841a12af
commit 41c67725a7
1 changed files with 16 additions and 11 deletions
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27
include/llvm/Analysis/TargetTransformInfo.h
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@ -844,18 +844,23 @@ public:
/// instructions.
unsigned getPrefetchDistance() const;
/// \return Some HW prefetchers can handle accesses up to a certain
/// constant stride. This is the minimum stride in bytes where it
/// makes sense to start adding SW prefetches. The default is 1,
/// i.e. prefetch with any stride. Sometimes prefetching is beneficial
/// even below the HW prefetcher limit, and the arguments provided are
/// meant to serve as a basis for deciding this for a particular loop:
/// \param NumMemAccesses Number of memory accesses in the loop.
/// Some HW prefetchers can handle accesses up to a certain constant stride.
/// Sometimes prefetching is beneficial even below the HW prefetcher limit,
/// and the arguments provided are meant to serve as a basis for deciding this
/// for a particular loop.
///
/// \param NumMemAccesses Number of memory accesses in the loop.
/// \param NumStridedMemAccesses Number of the memory accesses that
/// ScalarEvolution could find a known stride for.
/// \param NumPrefetches Number of software prefetches that will be emitted
/// as determined by the addresses involved and the cache line size.
/// \param HasCall True if the loop contains a call.
/// ScalarEvolution could find a known stride
/// for.
/// \param NumPrefetches Number of software prefetches that will be
/// emitted as determined by the addresses
/// involved and the cache line size.
/// \param HasCall True if the loop contains a call.
///
/// \return This is the minimum stride in bytes where it makes sense to start
/// adding SW prefetches. The default is 1, i.e. prefetch with any
/// stride.
unsigned getMinPrefetchStride(unsigned NumMemAccesses,
unsigned NumStridedMemAccesses,
unsigned NumPrefetches,