From 017c0b5a015e79625034ff47f199095cdf0af6b6 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Tue, 18 Jul 2023 09:45:21 +1000
Subject: [PATCH] Add a useful comment.

---
 compiler/rustc_middle/src/mir/mono.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/compiler/rustc_middle/src/mir/mono.rs b/compiler/rustc_middle/src/mir/mono.rs
index d217e1c5f8f..f4133dfbc95 100644
--- a/compiler/rustc_middle/src/mir/mono.rs
+++ b/compiler/rustc_middle/src/mir/mono.rs
@@ -56,6 +56,8 @@ impl<'tcx> MonoItem<'tcx> {
         }
     }
 
+    // Note: if you change how item size estimates work, you might need to
+    // change NON_INCR_MIN_CGU_SIZE as well.
     pub fn size_estimate(&self, tcx: TyCtxt<'tcx>) -> usize {
         match *self {
             MonoItem::Fn(instance) => {