From b5b12b89a0342308747f956d04ecd7015b2d6d8b Mon Sep 17 00:00:00 2001
From: Michael Matz <matz@suse.de>
Date: Tue, 13 Dec 2016 17:23:02 +0100
Subject: [PATCH] arm64: Fix a case of dead code suppression

82_nocode_wanted.c:kb_wait_2_1 was miscompiled on arm64.
---
 tccgen.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/tccgen.c b/tccgen.c
index a411e8f..f6c7700 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -5819,14 +5819,16 @@ static void block(int *bsym, int *csym, int is_expr)
         vla_sp_restore();
 	saved_nocode_wanted = nocode_wanted;
         block(&a, &b, 0);
-	nocode_wanted = saved_nocode_wanted;
         skip(TOK_WHILE);
         skip('(');
         gsym(b);
-        gexpr();
-	c = gvtst(0, 0);
-	if (!nocode_wanted)
+	gexpr();
+	if (!nocode_wanted) {
+	    c = gvtst(0, 0);
 	    gsym_addr(c, d);
+	} else
+	  vtop--;
+	nocode_wanted = saved_nocode_wanted;
         skip(')');
         gsym(a);
         skip(';');