From f38a3f2e78bc3fff37ab2107d448865f5b67a4d8 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Wed, 25 Mar 2026 17:20:20 +0100
Subject: abi: fix use bug preventing mem2reg optimization of struct return

---
 src/ir_abi0.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/ir_abi0.c')

diff --git a/src/ir_abi0.c b/src/ir_abi0.c
index 8722438..dd8bc40 100644
--- a/src/ir_abi0.c
+++ b/src/ir_abi0.c
@@ -428,6 +428,7 @@ abi0(Function *fn)
       if (isagg(fn->retty) && blk->jmp.t == Jret && blk->jmp.arg[0].bits) {
          assert(!blk->jmp.arg[1].bits);
          if (fn->nabiret) { /* aggregate return in register(s) */
+            deluse(blk, USERJUMP, blk->jmp.arg[0]);
             Ref r[2];
             int curi = blk->ins.n;
             load2regs(r, mkirtype(fn->retty), blk->jmp.arg[0], fn->nabiret, fn->abiret, r2off, blk, &curi);
-- 
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