From 1c372caa3354f2b47622f58a734ef10b5075f6c5 Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Thu, 21 Nov 2024 14:40:20 +0000
Subject: [PATCH] Make the cold_path intrinsic mark the current block as cold

---
 src/intrinsics/mod.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/intrinsics/mod.rs b/src/intrinsics/mod.rs
index 3318c0797ec3..5f1b71eff6b3 100644
--- a/src/intrinsics/mod.rs
+++ b/src/intrinsics/mod.rs
@@ -1270,8 +1270,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
         }
 
         sym::cold_path => {
-            // This is a no-op. The intrinsic is just a hint to the optimizer.
-            // We still have an impl here to avoid it being turned into a call.
+            fx.bcx.set_cold_block(fx.bcx.current_block().unwrap());
         }
 
         // Unimplemented intrinsics must have a fallback body. The fallback body is obtained