From cba84f37bc9b1d939c04ed31beec5b803ee4da5a Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Wed, 26 Nov 2025 19:44:24 +0100
Subject: regalloc: skip dead phis

---
 ir/regalloc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'ir/regalloc.c')

diff --git a/ir/regalloc.c b/ir/regalloc.c
index e060ebf..6706905 100644
--- a/ir/regalloc.c
+++ b/ir/regalloc.c
@@ -376,7 +376,10 @@ lowerphis(struct rega *ra, struct block *blk, struct block *suc)
          DBG("  phi had R%d\n", to.a);
       } else {
          to = ra->intervals.temps[phi - instrtab].alloc;
-         assert(to.t != ADEAD);
+         if (to.t == ADEAD) {
+            DBG("  skip dead phi\n");
+            continue;
+         }
          DBG("  found phi %c%d\n", " RS"[to.t], to.a);
          if (to.t == AREG)
             phi->reg = to.a+1;
-- 
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