Add dense float test

Author: IanWood1

mlir/test/Dialect/Vector/int-range-interface.mlir

@@ -17,6 +17,12 @@ func.func @constant_splat() -> vector<8xi32> {
   func.return %1 : vector<8xi32>
 }
 
+// CHECK-LABEL: func @float_constant_splat
+func.func @float_constant_splat() -> vector<8xf32> {
+  %0 = arith.constant dense<3.0> : vector<8xf32>
+  func.return %0: vector<8xf32>
+}
+
 // CHECK-LABEL: func @vector_splat
 // CHECK: test.reflect_bounds {smax = 5 : index, smin = 4 : index, umax = 5 : index, umin = 4 : index}
 func.func @vector_splat() -> vector<4xindex> {