From 51185a88a63762c5347b729e26ab9540c34201da Mon Sep 17 00:00:00 2001
From: Andrei Alexandrescu <andrei@erdani.com>
Date: Sun, 17 May 2015 13:28:03 -0700
Subject: [PATCH] Merge pull request #4666 from WalterBright/fix14587

fix Issue 14587 - generated 64 bit code for switch jump tables is wrong
---
 src/backend/cod3.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backend/cod3.c b/src/backend/cod3.c
index a7bc15188adb..db72be41b99a 100644
--- a/src/backend/cod3.c
+++ b/src/backend/cod3.c
@@ -1393,6 +1393,8 @@ void doswitch(block *b)
         if (vmax - vmin != REGMASK)     /* if there is a maximum        */
         {                               /* CMP reg,vmax-vmin            */
             c = genc2(c,0x81,modregrm(3,7,reg),vmax-vmin);
+            if (I64)
+                code_orrex(c, REX_W);
             genjmp(c,JA,FLblock,list_block(b->Bsucc));  /* JA default   */
         }
         if (I64)