From 3d4c9f96391b38fc02536bd4147545f08ae7c1e9 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Thu, 26 Nov 2015 22:25:13 +0100
Subject: [PATCH] FFI: Fix SPLIT pass for CONV i64.u64.

Thanks to Vyacheslav Egorov.
---
 src/lj_opt_split.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lj_opt_split.c b/src/lj_opt_split.c
index 1cee5093..4a1b0a6e 100644
--- a/src/lj_opt_split.c
+++ b/src/lj_opt_split.c
@@ -471,7 +471,8 @@ static void split_ir(jit_State *J)
 	}
 #endif
 	else if (st == IRT_I64 || st == IRT_U64) {  /* 64/64 bit cast. */
-	  /* Drop cast, since assembler doesn't care. */
+	  /* Drop cast, since assembler doesn't care. But fwd both parts. */
+	  hi = hiref;
 	  goto fwdlo;
 	} else if ((ir->op2 & IRCONV_SEXT)) {  /* Sign-extend to 64 bit. */
 	  IRRef k31 = lj_ir_kint(J, 31);