cortex m4 has floating point support, but only single precision.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110810 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMSubtarget.cpp b/lib/Target/ARM/ARMSubtarget.cpp
index b4eb83e..cb539f4 100644
--- a/lib/Target/ARM/ARMSubtarget.cpp
+++ b/lib/Target/ARM/ARMSubtarget.cpp
@@ -45,6 +45,7 @@
   , HasT2ExtractPack(false)
   , HasDataBarrier(false)
   , Pref32BitThumb(false)
+  , FPOnlySP(false)
   , stackAlignment(4)
   , CPUString("generic")
   , TargetType(isELF) // Default to ELF unless otherwise specified.