From 09f72a4bae1164eaa5044eaa58759fa1e6139e6f Mon Sep 17 00:00:00 2001
From: Sabrina Ni <sabrina@andestech.com>
Date: Wed, 19 Mar 2014 17:05:43 +0800
Subject: [PATCH 01/15] [nds32] Tweak code for optimization in the longjmp
 implementation.

  * newlib/libc/machine/nds32/setjmp.S: Optimize.
---
 newlib/libc/machine/nds32/setjmp.S | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/newlib/libc/machine/nds32/setjmp.S b/newlib/libc/machine/nds32/setjmp.S
index 90b162e..906efab 100644
--- a/newlib/libc/machine/nds32/setjmp.S
+++ b/newlib/libc/machine/nds32/setjmp.S
@@ -78,10 +78,9 @@ longjmp:
 	lmw.bim   $r6, [$r0], $r14, 0x0
 	lmw.bim  $r16, [$r0], $r19, 0xf
 #endif
-	/* If the value val is 0, 1 will be returned instead.  */
-	bnez	$r1, 1f
-	movi	$r1, 1
-1:
-	move	$r0, $r1
+	/* Set val as return value.  If the value val is 0, 1 will be returned
+	   instead.  */
+	movi	$r0, 1
+	cmovn	$r0, $r1, $r1	/* r0=(r1!=0)? r1: r0  */
 	ret
 	.size	longjmp, .-longjmp
-- 
1.9.0