From 1788a42aa1e1bd442c842dec9fae955bfa6f4ba0 Mon Sep 17 00:00:00 2001
From: Chris Fallin <chris@cfallin.org>
Date: Wed, 30 Nov 2022 18:19:48 -0800
Subject: [PATCH] regalloc fix: scan blocks bottom-up, not top-down!

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

diff --git a/src/backend/localify.rs b/src/backend/localify.rs
index a9c4db4..d5e77e4 100644
--- a/src/backend/localify.rs
+++ b/src/backend/localify.rs
@@ -65,7 +65,7 @@ impl<'a> Context<'a> {
             });
             point += 1;
 
-            for &inst in &self.body.blocks[block].insts {
+            for &inst in self.body.blocks[block].insts.iter().rev() {
                 self.handle_inst(&mut live, &mut point, inst, /* root = */ true);
                 point += 1;
             }