From d4d95ee2da57ea2c6f2fa68700b51f8f8251b83d Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Wed, 8 Dec 2010 01:57:50 +0100
Subject: Fix x64 code generation for A16+REX prefixed instructions.

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

(limited to 'src')

diff --git a/src/lj_asm.c b/src/lj_asm.c
index 944b9b78..6231f134 100644
--- a/src/lj_asm.c
+++ b/src/lj_asm.c
@@ -155,6 +155,7 @@ static LJ_AINLINE MCode *emit_op(x86Op xo, Reg rr, Reg rb, Reg rx,
     if (rex != 0x40) {
       rex |= (rr >> 16);
       if (n == -4) { *p = (MCode)rex; rex = (MCode)(xo >> 8); }
+      else if ((xo & 0xffffff) == 0x6600fd) { *p = (MCode)rex; rex = 0x66; }
       *--p = (MCode)rex;
     }
   }
-- 
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