From 1892d62c76e8c13cdca3b419d8079f8d1d1654c7 Mon Sep 17 00:00:00 2001
From: Chris Fallin <chris@cfallin.org>
Date: Mon, 28 Nov 2022 22:25:03 -0800
Subject: [PATCH] Stackifier produces control flow for simple-interpreter test
 case.

---
 src/backend/stackify.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/stackify.rs b/src/backend/stackify.rs
index 45b17b1..203de6d 100644
--- a/src/backend/stackify.rs
+++ b/src/backend/stackify.rs
@@ -213,7 +213,7 @@ impl<'a, 'b> Context<'a, 'b> {
         // the target is either a merge block, or is a backward branch
         // (by RPO number).
         if self.merge_nodes.contains(&target.block)
-            || self.rpo.rev[target.block] < self.rpo.rev[source]
+            || self.rpo.rev[target.block] <= self.rpo.rev[source]
         {
             let index = self.resolve_target(target.block);
             self.do_blockparam_transfer(