YJIT: Dump spill error to stderr [ci skip]

Since the panic message is in stderr, better to use the same stream in
case stdout and stderr are not synced due to IO redirection.

1 files changed, 3 insertions, 3 deletions

diff --git a/yjit/src/backend/ir.rs b/yjit/src/backend/ir.rs
index a2020b97eb..8e045963a9 100644
--- a/yjit/src/backend/ir.rs
+++ b/yjit/src/backend/ir.rs
@@ -973,11 +973,11 @@ impl Assembler
 
             // Dump insns along with live registers
             for (insn_idx, insn) in insns.iter().enumerate() {
-                print!("{:3} ", if spill_index == insn_idx { "==>" } else { "" });
+                eprint!("{:3} ", if spill_index == insn_idx { "==>" } else { "" });
                 for reg in 0..=num_regs {
-                    print!("{:1}", if reg < live_regs[insn_idx] { "|" } else { "" });
+                    eprint!("{:1}", if reg < live_regs[insn_idx] { "|" } else { "" });
                 }
-                println!(" [{:3}] {:?}", insn_idx, insn);
+                eprintln!(" [{:3}] {:?}", insn_idx, insn);
             }
         }