[PATCH] D34566: [loop idiom Recognition] support memcpy for multiple consecutive loads and stores

[DIVYA SHANMUGHAN via Phabricator via llvm-commits]

DIVYA created this revision.
Herald added a subscriber: mzolotukhin.

This pass converts multiple consecutive loads ans stores inside a loop to memcpy operation.
For example, the stores and loads in the below code can be converted to a memcpy .

struct foo
{

  int a;
  int b;

} f,g;

for(int i=0;i<n;i++)
{

  f[i].a  =  g[i].a;
  f[i].b  =  g[i].b;

}

Worked in collaboration with Sebastian Pop and Aditya Kumar.


https://reviews.llvm.org/D34566

Files:
  llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
  llvm/test/Transforms/LoopIdiom/memcpy_structPattern.ll

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