From 4cb9f0309d6e85e6d4bef42321b06ad299e3ef27 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Sat, 10 May 2025 09:39:04 +1000
Subject: [PATCH] Make the assertion in `Ident::new` debug-only.

This fixes a perf regression introduced in #140252.
---
 compiler/rustc_span/src/symbol.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs
index b6cb6113f9fc3..8df211b0840ec 100644
--- a/compiler/rustc_span/src/symbol.rs
+++ b/compiler/rustc_span/src/symbol.rs
@@ -2352,7 +2352,7 @@ impl Ident {
     #[inline]
     /// Constructs a new identifier from a symbol and a span.
     pub fn new(name: Symbol, span: Span) -> Ident {
-        assert_ne!(name, kw::Empty);
+        debug_assert_ne!(name, kw::Empty);
         Ident { name, span }
     }