From 2179a3ebf460a3f35da8c9b403248442b2f54a34 Mon Sep 17 00:00:00 2001
From: James Liu <contact@jamessliu.com>
Date: Sat, 12 Nov 2022 16:15:04 +0000
Subject: [PATCH] Make Entity::to_bits const (#6559)

# Objective
Fix #6548. Most of these methods were already made `const` in #5688. `Entity::to_bits` is the only one that remained.

## Solution
Make it const.
---
 crates/bevy_ecs/src/entity/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/bevy_ecs/src/entity/mod.rs b/crates/bevy_ecs/src/entity/mod.rs
index 280d5e7f075e9..844885413716e 100644
--- a/crates/bevy_ecs/src/entity/mod.rs
+++ b/crates/bevy_ecs/src/entity/mod.rs
@@ -176,8 +176,8 @@ impl Entity {
     /// for serialization between runs.
     ///
     /// No particular structure is guaranteed for the returned bits.
-    pub fn to_bits(self) -> u64 {
-        u64::from(self.generation) << 32 | u64::from(self.index)
+    pub const fn to_bits(self) -> u64 {
+        (self.generation as u64) << 32 | self.index as u64
     }
 
     /// Reconstruct an `Entity` previously destructured with [`Entity::to_bits`].