[PATCH] D22630: Loop rotation

[Aditya Kumar via llvm-commits]

hiraditya updated this revision to Diff 75434.
hiraditya added a comment.

Addressed Michael's comments about removing the metadata support and identifying already rotated loops.

- Do not rotate the loop if the latch is already exiting.
- Do not add any metadata specifying the loop has been rotated.


https://reviews.llvm.org/D22630

Files:
  llvm/include/llvm/Analysis/LoopInfo.h
  llvm/include/llvm/IR/Instruction.h
  llvm/include/llvm/Transforms/Scalar.h
  llvm/lib/Analysis/LoopInfo.cpp
  llvm/lib/IR/LLVMContextImpl.h
  llvm/lib/IR/Metadata.cpp
  llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
  llvm/lib/Transforms/Scalar/LoopRotation.cpp
  llvm/test/Analysis/GlobalsModRef/memset-escape.ll
  llvm/test/Analysis/ScalarEvolution/2012-03-26-LoadConstant.ll
  llvm/test/Transforms/LoopRotate/alloca.ll
  llvm/test/Transforms/LoopRotate/basic.ll
  llvm/test/Transforms/LoopRotate/dbgvalue.ll
  llvm/test/Transforms/LoopRotate/indirectbr-1.ll
  llvm/test/Transforms/LoopRotate/loop-rotate-before-latch.ll
  llvm/test/Transforms/LoopRotate/loop-rotate.ll
  llvm/test/Transforms/LoopRotate/multiple-exits-merge-phi.ll
  llvm/test/Transforms/LoopRotate/multiple-exits.ll
  llvm/test/Transforms/LoopRotate/nosimplifylatch.ll
  llvm/test/Transforms/LoopRotate/phi-duplicate.ll
  llvm/test/Transforms/LoopRotate/pr7447.ll
  llvm/test/Transforms/LoopRotate/preserve-loop-simplify.ll
  llvm/test/Transforms/LoopRotate/simplifylatch.ll
  llvm/test/Transforms/LoopSimplify/ashr-crash.ll
  llvm/test/Transforms/LoopVectorize/vect.omp.persistence.ll

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