[PATCH] D28907: [SLP] Fix for PR30787: Failure to beneficially vectorize 'copyable' elements in integer binary ops.

[Alexey Bataev via Phabricator via llvm-commits]

ABataev created this revision.

Patch tries to improve vectorization of the following code:

  void add1(int * __restrict dst, const int * __restrict src) {
    *dst++ = *src++;
    *dst++ = *src++ + 1;
    *dst++ = *src++ + 2;
    *dst++ = *src++ + 3;
  }

Currently this code cannot be vectorized because the very first operation is not a binary add, but just a load.


https://reviews.llvm.org/D28907

Files:
  lib/Transforms/Vectorize/SLPVectorizer.cpp
  test/Transforms/SLPVectorizer/X86/vect_copyable_in_binops.ll

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