Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 31 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gnat.dg/opt18.adb b/gcc-4.9/gcc/testsuite/gnat.dg/opt18.adb
new file mode 100644
index 000000000..94c44beb6
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gnat.dg/opt18.adb
@@ -0,0 +1,31 @@
+-- { dg-do compile }
+-- { dg-options "-O3" }
+
+with Opt18_Pkg; use Opt18_Pkg;
+
+package body Opt18 is
+
+   function Mag (Item : in Cart_Vector_Type) return Float is
+   begin
+      return Sqrt (Item (X) * Item (X) + Item (Y) * Item (Y)
+                   + Item (Z) * Item (Z));
+   end;
+
+   function Unit_Quaternion_To_Mag_Axis (Quaternion : in Unit_Quaternion_Type)
+   return Mag_Axis_Type is
+      Sin_Half : Float
+         := Mag (Cart_Vector_Type'(Quaternion.X, Quaternion.Y, Quaternion.Z));
+   begin
+      if Sin_Half > 3.0 * First_Order_Trig then
+         return
+            (Mag  => Atan2 (Double_Trig (Unchecked_Trig_Pair (Sin_Half,
+                                                              Quaternion.S))),
+             Axis => Unit_Vector_Type'(Quaternion.X / Sin_Half,
+                                       Quaternion.Y / Sin_Half,
+                                       Quaternion.Z / Sin_Half));
+      else
+         return (0.0, X_Unit);
+      end if;
+   end;
+
+end Opt18;