From becd5c4b7fa44eca3c5184c36122a5f4c07aad95 Mon Sep 17 00:00:00 2001
From: Jakub Doka <jakub.doka2@gmail.com>
Date: Sun, 17 Nov 2024 21:30:20 +0100
Subject: [PATCH] well?

---
 lang/src/son/hbvm/regalloc.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lang/src/son/hbvm/regalloc.rs b/lang/src/son/hbvm/regalloc.rs
index 20828d7..aa47d6e 100644
--- a/lang/src/son/hbvm/regalloc.rs
+++ b/lang/src/son/hbvm/regalloc.rs
@@ -301,10 +301,11 @@ impl HbvmBackend {
         let bundle_count = self.ralloc.bundles.len() + (reg_offset as usize);
         (
             if tail {
+                debug_assert!(bundle_count >= reg::RET_ADDR as _);
+                bundle_count.saturating_sub(reg::RET_ADDR as _)
+            } else {
                 assert!(bundle_count < reg::STACK_PTR as usize, "TODO: spill memory");
                 self.ralloc.bundles.len()
-            } else {
-                bundle_count.saturating_sub(reg::RET_ADDR as _)
             },
             tail,
         )