From 8e266d999d47e40cc7e90fba5d1ea9a581fd5175 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomasz=20Mi=C4=85sko?= <tomasz.miasko@gmail.com>
Date: Wed, 18 Jun 2025 16:12:42 +0200
Subject: [PATCH] Preserve caches in a call to shrink_to_fit

---
 compiler/rustc_mir_transform/src/simplify.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_mir_transform/src/simplify.rs b/compiler/rustc_mir_transform/src/simplify.rs
index a54e548ad70ab..db933da641371 100644
--- a/compiler/rustc_mir_transform/src/simplify.rs
+++ b/compiler/rustc_mir_transform/src/simplify.rs
@@ -82,7 +82,7 @@ pub(super) fn simplify_cfg<'tcx>(tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
     remove_dead_blocks(body);
 
     // FIXME: Should probably be moved into some kind of pass manager
-    body.basic_blocks_mut().raw.shrink_to_fit();
+    body.basic_blocks.as_mut_preserves_cfg().shrink_to_fit();
 }
 
 impl<'tcx> crate::MirPass<'tcx> for SimplifyCfg {