Avoid extra register movement when lowering the x86 scalar_to_vector of a float value

cranelift/codegen/meta/src/cdsl/types.rs

@@ -264,6 +264,27 @@ impl LaneType {
             ValueType::Vector(VectorType::new(*self, lanes.into()))
         }
     }
+
+    pub fn is_float(&self) -> bool {
+        match self {
+            LaneType::FloatType(_) => true,
+            _ => false,
+        }
+    }
+
+    pub fn is_int(&self) -> bool {
+        match self {
+            LaneType::IntType(_) => true,
+            _ => false,
+        }
+    }
+
+    pub fn is_bool(&self) -> bool {
+        match self {
+            LaneType::BoolType(_) => true,
+            _ => false,
+        }
+    }
 }
 
 impl fmt::Display for LaneType {