diff options
Diffstat (limited to 'lib/Transforms/Vectorize/LoopVectorize.cpp')
| -rw-r--r-- | lib/Transforms/Vectorize/LoopVectorize.cpp | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp index 9c82cb8dca..c29f416be7 100644 --- a/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -116,9 +116,6 @@ static const unsigned RuntimeMemoryCheckThreshold = 4; /// This is the highest vector width that we try to generate. static const unsigned MaxVectorSize = 8; -/// This is the highest Unroll Factor. -static const unsigned MaxUnrollSize = 4; - namespace { // Forward declarations. @@ -2715,6 +2712,8 @@ LoopVectorizationCostModel::selectUnrollFactor(bool OptForSize, UF = std::min(UF, (MaxLoopSizeThreshold / R.NumInstructions)); // Clamp the unroll factor ranges to reasonable factors. + unsigned MaxUnrollSize = TTI.getMaximumUnrollFactor(); + if (UF > MaxUnrollSize) UF = MaxUnrollSize; else if (UF < 1) |