From d091d6ea94e5a23346c30ea642d53bd00c90ee30 Mon Sep 17 00:00:00 2001
From: Max Bernstein <max.bernstein@shopify.com>
Date: Thu, 6 Feb 2025 12:13:43 -0500
Subject: Add swap

---
 zjit/src/ir.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/zjit/src/ir.rs b/zjit/src/ir.rs
index 170866bbba..27fbedc181 100644
--- a/zjit/src/ir.rs
+++ b/zjit/src/ir.rs
@@ -209,6 +209,12 @@ pub fn iseq_to_ssa(iseq: *const rb_iseq_t) {
             }
             YARVINSN_pop => { state.pop(); }
             YARVINSN_dup => { state.push(state.top()); }
+            YARVINSN_swap => {
+                let right = state.pop();
+                let left = state.pop();
+                state.push(right);
+                state.push(left);
+            }
             YARVINSN_leave => {
                 result.push_insn(block, Insn::Return { val: state.pop() });
             }
-- 
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