[PATCH] D25276: [LoopVectorizer] Interleaved-mem-accesses analysis and getPtrStride

[Dorit Nuzman via llvm-commits]

dorit updated this revision to Diff 75112.
dorit added a comment.

Updated as agreed above: use Assume=false,ShouldCheckWrap=false initially; revisit groups with gaps later with Assume=false,ShouldCheckWrap=true;  
Added an xfailing testcase where we have gaps and need Assume=true in order to prove that the stride is 2.


https://reviews.llvm.org/D25276

Files:
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/AArch64/gather-cost.ll
  llvm/test/Transforms/LoopVectorize/ARM/gather-cost.ll
  llvm/test/Transforms/LoopVectorize/interleaved-accesses-1.ll
  llvm/test/Transforms/LoopVectorize/interleaved-accesses-2.ll

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