Make sure short memsets on ARM lower to stores, even when optimizing for size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143055 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index 472bf4c..31e522d 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -752,6 +752,8 @@
 
   //// temporary - rewrite interface to use type
   maxStoresPerMemcpy = maxStoresPerMemcpyOptSize = 1;
+  maxStoresPerMemset = 16;
+  maxStoresPerMemsetOptSize = Subtarget->isTargetDarwin() ? 8 : 4;
 
   // On ARM arguments smaller than 4 bytes are extended, so all arguments
   // are at least 4 bytes aligned.