Revert r142530 at least temporarily while a discussion is had on llvm-commits regarding exactly how much optsize should optimize for size over performance.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143023 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp
index d7aca30..472bf4c 100644
--- a/lib/Target/ARM/ARMISelLowering.cpp
+++ b/lib/Target/ARM/ARMISelLowering.cpp
@@ -2104,11 +2104,8 @@
   }
 
   // If we have T2 ops, we can materialize the address directly via movt/movw
-  // pair. This is always cheaper in terms of performance, but uses at least 2
-  // extra bytes.
-  MachineFunction &MF = DAG.getMachineFunction();
-  if (Subtarget->useMovt() &&
-      !MF.getFunction()->hasFnAttr(Attribute::OptimizeForSize)) {
+  // pair. This is always cheaper.
+  if (Subtarget->useMovt()) {
     ++NumMovwMovt;
     // FIXME: Once remat is capable of dealing with instructions with register
     // operands, expand this into two nodes.