From e471cfe5d94f47b7bcd95ce37e7d5c75997a7a67 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Sat, 22 Nov 2025 09:50:14 +0100
Subject: amd64/emit: fix REX-requiring 8-bit GPR encoding checking wrong reg

---
 c/c.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'c/c.c')

diff --git a/c/c.c b/c/c.c
index 5708419..5a0f5bd 100644
--- a/c/c.c
+++ b/c/c.c
@@ -3227,6 +3227,8 @@ compileexpr(struct function *fn, const struct expr *ex, bool discard)
    case EPLUS:
       r = compileexpr(fn, sub, discard);
       if (discard) return NOREF;
+      if (isscalar(ex->ty) && typesize(ex->ty) < typesize(sub->ty))
+         return narrow(fn, type2cls[scalartypet(ex->ty)], ex->ty, r, 0);
       return cvt(fn, ex->ty, sub->ty, r);
    case ENEG:
       op = Oneg;
-- 
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