From: Nadav Rotem <nrotem@apple.com>
Date: Tue, 15 Jan 2013 18:25:16 +0000 (+0000)
Subject: LoopVectorizer cost model. Honor the user command line flag that selects the vectoriz... 
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6a459e65c8bd90e8381361379255ebfb9552b5cf;p=oota-llvm.git

LoopVectorizer cost model. Honor the user command line flag that selects the vectorization factor even if the target machine does not have any vector registers.

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 464ed97506f..bc8e1217bea 100644
--- 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"