From: Martin Schwenke <martin@meltin.net>
Date: Wed, 16 Jun 2021 04:58:08 +0000 (+1000)
Subject: bn: Drop unnecessary use of r9
X-Git-Tag: openssl-3.0.0-beta2~250
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77bd294bd0249eae040438a785fe17fb631eaa97;p=thirdparty%2Fopenssl.git

bn: Drop unnecessary use of r9

This is done in other versions due to the possibility of an early
return.  However, there is no early return here.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15798)
---

diff --git a/crypto/bn/asm/ppc64-mont-fixed.pl b/crypto/bn/asm/ppc64-mont-fixed.pl
index b96f60d5aa0..941882ec82f 100755
--- a/crypto/bn/asm/ppc64-mont-fixed.pl
+++ b/crypto/bn/asm/ppc64-mont-fixed.pl
@@ -72,8 +72,6 @@ my $np	= "r6";
 my $n0	= "r7";
 my $num	= "r8";
 
-$rp	= "r9";	# $rp is reassigned
-
 my $c0	= "r10";
 my $bp0	= "r11";
 my $bpi	= "r11";
@@ -188,7 +186,6 @@ sub mul_mont_fixed($)
 .globl	.${fname}
 .align	5
 .${fname}:
-	mr	$rp,r3
 
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