From 942a08b559714576ee97bb2f4001f20547de427d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jana=20D=C3=B6nszelmann?= <jana@donsz.nl>
Date: Mon, 8 Dec 2025 10:48:42 +0100
Subject: [PATCH] Revert "early return on duplicate span lowerings"

This reverts commit 0087253015d1191b97b5e312c2409e008db87ed6.
---
 compiler/rustc_ast_lowering/src/lib.rs | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/compiler/rustc_ast_lowering/src/lib.rs b/compiler/rustc_ast_lowering/src/lib.rs
index ab5caff86204d..dff46ece65430 100644
--- a/compiler/rustc_ast_lowering/src/lib.rs
+++ b/compiler/rustc_ast_lowering/src/lib.rs
@@ -225,13 +225,6 @@ struct SpanLowerer {
 impl SpanLowerer {
     fn lower(&self, span: Span) -> Span {
         if self.is_incremental {
-            // early return: span lowering takes some time since it accesses the query dependency graph
-            // to make sure we rerun the right code paths when spans change. When we've already lowered a span,
-            // or don't have to, bail out ASAP.
-            if span.is_dummy() || span.parent().is_some_and(|i| i == self.def_id) {
-                return span;
-            }
-
             span.with_parent(Some(self.def_id))
         } else {
             // Do not make spans relative when not using incremental compilation.