Drive the analysis of interleaved memory accesses in the loop.

Synopsis

Declared in <llvm/Analysis/VectorUtils.h>

class InterleavedAccessInfo;

Description

Use this class to analyze interleaved accesses only when we can vectorize a loop. Otherwise it's meaningless to do analysis as the vectorization on interleaved accesses is unsafe.

The analysis collects interleave groups and records the relationships between the member and the group in a map.

Member Functions

Name

Description

InterleavedAccessInfo [constructor]

Construct interleaved‐access analysis for loop L.

~InterleavedAccessInfo [destructor]

Destroy the analysis and release all interleave groups.

analyzeInterleaving

Analyze interleaved accesses and collect them into interleave groups.

getInterleaveGroup

Get the interleave group that Instr belongs to.

getInterleaveGroups

Return an iterator range over the interleave groups found by analysis.

hasGroups

Returns true if we have any interleave groups.

invalidateGroups

Invalidate all interleave groups.

invalidateGroupsRequiringScalarEpilogue

Invalidate groups that require a scalar epilogue due to gaps.

isInterleaved

Check if Instr belongs to any interleave group.

requiresScalarEpilogue

Returns true if an interleaved group that may access memory out‐of‐bounds requires a scalar epilogue iteration for correctness.

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