LoopVectorizer: When -Os is used, vectorize only loops that dont require a tail loop. There is no testcase because I dont know of a way to initialize the loop vectorizer pass without adding an additional hidden flag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169950 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/PassManagerBuilder.cpp b/lib/Transforms/IPO/PassManagerBuilder.cpp
index a9a9f2e..0862786 100644
--- a/lib/Transforms/IPO/PassManagerBuilder.cpp
+++ b/lib/Transforms/IPO/PassManagerBuilder.cpp
@@ -189,7 +189,7 @@
MPM.add(createLoopDeletionPass()); // Delete dead loops
if (LoopVectorize && OptLevel > 1)
- MPM.add(createLoopVectorizePass());
+ MPM.add(createLoopVectorizePass(SizeLevel));
if (!DisableUnrollLoops)
MPM.add(createLoopUnrollPass()); // Unroll small loops