Index: llvm/trunk/lib/Target/X86/X86TargetTransformInfo.cpp
===================================================================
--- llvm/trunk/lib/Target/X86/X86TargetTransformInfo.cpp
+++ llvm/trunk/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -2147,7 +2147,7 @@
   // TODO: We expect this to be beneficial regardless of arch,
   // but there are currently some unexplained performance artifacts on Atom.
   // As a temporary solution, disable on Atom.
-  return !(ST->isAtom() || ST->isSLM());
+  return !(ST->isAtom());
 }
 
 // Get estimation for interleaved load/store operations and strided load.
Index: llvm/trunk/test/Transforms/LoopVectorize/X86/interleaving.ll
===================================================================
--- llvm/trunk/test/Transforms/LoopVectorize/X86/interleaving.ll
+++ llvm/trunk/test/Transforms/LoopVectorize/X86/interleaving.ll
@@ -1,4 +1,5 @@
 ; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine < %s | FileCheck %s --check-prefix=NORMAL
+; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine -mcpu=slm < %s | FileCheck %s --check-prefix=NORMAL
 ; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine -mcpu=atom < %s | FileCheck %s --check-prefix=ATOM
 
 ; NORMAL-LABEL: foo