[PATCH] D13151: Expand loop reroll to handle loop with multiple induction variables and negative increment -part 2/3

[Lawrence Hu via llvm-commits]

hulx2000 created this revision.
hulx2000 added reviewers: apazos, zinob, jmolloy, hfinkel.
hulx2000 added subscribers: mzolotukhin, llvm-commits.
hulx2000 set the repository for this revision to rL LLVM.
Herald added a subscriber: sanjoy.

    This patch enable LoopReroll to reroll loop with pointer induction
    variable, such as:
    
    while (buf !=end ) {
       S += buf[0]; //a[i];
       S += buf[1]; //a[i+1];
       buf +=2;
    };


Repository:
  rL LLVM

http://reviews.llvm.org/D13151

Files:
  lib/Transforms/Scalar/LoopRerollPass.cpp
  test/Transforms/LoopReroll/ptrindvar.ll

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