diff --git a/lib/Transforms/Vectorize/SLPVectorizer.cpp b/lib/Transforms/Vectorize/SLPVectorizer.cpp
index c2427e72d84..b287ca7c8d5 100644
--- a/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ b/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -51,7 +51,7 @@ static cl::opt<int>
                               "number "));
 namespace {
 
-static const unsigned MinVecRegSize = 256;
+static const unsigned MinVecRegSize = 128;
 
 static const unsigned RecursionMaxDepth = 12;