LoopVectorizer cost model. Honor the user command line flag that selects the vectoriz...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172544 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp
index 464ed97506f1de58b77761ded6bbb2083057bc99..bc8e1217beacd2ff1c88e868c59c091cd874792c 100644 (file)
--- a/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -2633,7 +2633,7 @@ LoopVectorizationCostModel::selectVectorizationFactor(bool OptForSize,
 
   if (MaxVectorSize == 0) {
     DEBUG(dbgs() << "LV: The target has no vector registers.\n");
-    return 1;
+    MaxVectorSize = 1;
   }
 
   assert(MaxVectorSize <= 32 && "Did not expect to pack so many elements"