diff --git a/llvm/lib/CodeGen/IntrinsicLowering.cpp b/llvm/lib/CodeGen/IntrinsicLowering.cpp
index 63ff815..85e8ba5 100644
--- a/llvm/lib/CodeGen/IntrinsicLowering.cpp
+++ b/llvm/lib/CodeGen/IntrinsicLowering.cpp
@@ -169,6 +169,9 @@
                                             cast<PointerType>(CI->getType())));
     break;
 
+  case Intrinsic::prefetch:
+    break;    // Simply strip out prefetches on unsupported architectures
+
   case Intrinsic::dbg_stoppoint:
   case Intrinsic::dbg_region_start:
   case Intrinsic::dbg_region_end: