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| author | Matthew Simpson <mssimpso@codeaurora.org> | 2017-05-16 14:43:55 +0000 |
|---|---|---|
| committer | Matthew Simpson <mssimpso@codeaurora.org> | 2017-05-16 14:43:55 +0000 |
| commit | b7b5d55c389b75ab3bcabbebc4095c082a40db2d (patch) | |
| tree | b28e45283aff202d77aa14a26ec1e81fb63608e6 /llvm/lib/Transforms | |
| parent | afb555473ee95bbcf9d0524de4c9904b463d1d8e (diff) | |
| download | bcm5719-llvm-b7b5d55c389b75ab3bcabbebc4095c082a40db2d.tar.gz bcm5719-llvm-b7b5d55c389b75ab3bcabbebc4095c082a40db2d.zip | |
[LV] Avoid potentential division by zero when selecting IC
llvm-svn: 303174
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Vectorize/LoopVectorize.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp index 516ab7d03a8..f18ff8f991f 100644 --- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -6550,8 +6550,8 @@ unsigned LoopVectorizationCostModel::selectInterleaveCount(bool OptForSize, // We assume that the cost overhead is 1 and we use the cost model // to estimate the cost of the loop and interleave until the cost of the // loop overhead is about 5% of the cost of the loop. - unsigned SmallIC = - std::min(IC, (unsigned)PowerOf2Floor(SmallLoopCost / LoopCost)); + unsigned SmallIC = std::min( + IC, (unsigned)PowerOf2Floor(SmallLoopCost / LoopCost ? LoopCost : 1)); // Interleave until store/load ports (estimated by max interleave count) are // saturated. |
