From 7f2ff23db1de53ea8695bb4a7c1cfab88886e3fd Mon Sep 17 00:00:00 2001 From: Jesper Nilsson Date: Wed, 10 Jun 2009 15:06:55 +0200 Subject: CRISv32: Add arch optimized strcmp. Add an optimized strcmp for CRISv32. This improves strcmp performance with about 25% when comparing a 55 character string with itself. Signed-off-by: Edgar Iglesias Acked-by: Jesper Nilsson --- arch/cris/arch-v32/lib/strcmp.S | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 arch/cris/arch-v32/lib/strcmp.S (limited to 'arch/cris/arch-v32/lib/strcmp.S') diff --git a/arch/cris/arch-v32/lib/strcmp.S b/arch/cris/arch-v32/lib/strcmp.S new file mode 100644 index 00000000000..8f7a1ee6259 --- /dev/null +++ b/arch/cris/arch-v32/lib/strcmp.S @@ -0,0 +1,21 @@ +; strcmp.S -- CRISv32 version. +; Copyright (C) 2008 AXIS Communications AB +; Written by Edgar E. Iglesias +; +; This source code is licensed under the GNU General Public License, +; Version 2. See the file COPYING for more details. + + .global strcmp + .type strcmp,@function +strcmp: +1: + move.b [$r10+], $r12 + seq $r13 + sub.b [$r11+], $r12 + or.b $r12, $r13 + beq 1b + nop + + ret + movs.b $r12, $r10 + .size strcmp, . - strcmp -- cgit v1.2.3-70-g09d2