diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/LoopInterchange.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopInterchange.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopInterchange.cpp b/llvm/lib/Transforms/Scalar/LoopInterchange.cpp index a641afeda03..5dcb630c814 100644 --- a/llvm/lib/Transforms/Scalar/LoopInterchange.cpp +++ b/llvm/lib/Transforms/Scalar/LoopInterchange.cpp @@ -1112,7 +1112,8 @@ static bool isProfitableForVectorization(unsigned InnerLoopId, } // If outer loop has dependence and inner loop is loop independent then it is // profitable to interchange to enable parallelism. - return true; + // If there are no dependences, interchanging will not improve anything. + return !DepMatrix.empty(); } bool LoopInterchangeProfitability::isProfitable(unsigned InnerLoopId, |
