store MC FP immediates as a double instead of as an APFloat, thus avoiding an
unnecessary dtor for MCOperand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114064 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMMCInstLower.cpp b/lib/Target/ARM/ARMMCInstLower.cpp
index b26d327..8774010 100644
--- a/lib/Target/ARM/ARMMCInstLower.cpp
+++ b/lib/Target/ARM/ARMMCInstLower.cpp
@@ -157,7 +157,8 @@
                                               MO.getBlockAddress()));
       break;
     case MachineOperand::MO_FPImmediate:
-      MCOp = MCOperand::CreateFPImm(MO.getFPImm()->getValueAPF());
+      MCOp =
+        MCOperand::CreateFPImm(MO.getFPImm()->getValueAPF().convertToDouble());
       break;
     }