Fork of mbed-dsp. CMSIS-DSP library of supporting NEON

Dependents:   mbed-os-example-cmsis_dsp_neon

Fork of mbed-dsp by mbed official

Information

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CMSIS-DSP of supporting NEON

What is this ?

A library for CMSIS-DSP of supporting NEON.
We supported the NEON to CMSIS-DSP Ver1.4.3(CMSIS V4.1) that ARM supplied, has achieved the processing speed improvement.
If you use the mbed-dsp library, you can use to replace this library.
CMSIS-DSP of supporting NEON is provied as a library.

Library Creation environment

CMSIS-DSP library of supporting NEON was created by the following environment.

  • Compiler
    ARMCC Version 5.03
  • Compile option switch[C Compiler]
   -DARM_MATH_MATRIX_CHECK -DARM_MATH_ROUNDING -O3 -Otime --cpu=Cortex-A9 --littleend --arm 
   --apcs=/interwork --no_unaligned_access --fpu=vfpv3_fp16 --fpmode=fast --apcs=/hardfp 
   --vectorize --asm
  • Compile option switch[Assembler]
   --cpreproc --cpu=Cortex-A9 --littleend --arm --apcs=/interwork --no_unaligned_access 
   --fpu=vfpv3_fp16 --fpmode=fast --apcs=/hardfp


Effects of NEON support

In the data which passes to each function, large size will be expected more effective than small size.
Also if the data is a multiple of 16, effect will be expected in every function in the CMSIS-DSP.


NEON対応CMSIS-DSP

概要

NEON対応したCMSIS-DSPのライブラリです。
ARM社提供のCMSIS-DSP Ver1.4.3(CMSIS V4.1)をターゲットにNEON対応を行ない、処理速度向上を実現しております。
mbed-dspライブラリを使用している場合は、本ライブラリに置き換えて使用することができます。
NEON対応したCMSIS-DSPはライブラリで提供します。

ライブラリ作成環境

NEON対応CMSIS-DSPライブラリは、以下の環境で作成しています。

  • コンパイラ
    ARMCC Version 5.03
  • コンパイルオプションスイッチ[C Compiler]
   -DARM_MATH_MATRIX_CHECK -DARM_MATH_ROUNDING -O3 -Otime --cpu=Cortex-A9 --littleend --arm 
   --apcs=/interwork --no_unaligned_access --fpu=vfpv3_fp16 --fpmode=fast --apcs=/hardfp 
   --vectorize --asm
  • コンパイルオプションスイッチ[Assembler]
   --cpreproc --cpu=Cortex-A9 --littleend --arm --apcs=/interwork --no_unaligned_access 
   --fpu=vfpv3_fp16 --fpmode=fast --apcs=/hardfp


NEON対応による効果について

CMSIS-DSP内の各関数へ渡すデータは、小さいサイズよりも大きいサイズの方が効果が見込めます。
また、16の倍数のデータであれば、CMSIS-DSP内のどの関数でも効果が見込めます。


Committer:
1050186
Date:
Tue Jun 23 06:23:42 2015 +0000
Revision:
5:a912b042151f
first commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
1050186 5:a912b042151f 1 /* ----------------------------------------------------------------------
1050186 5:a912b042151f 2 * Copyright (C) 2010-20134 ARM Limited. All rights reserved.
1050186 5:a912b042151f 3 *
1050186 5:a912b042151f 4 * $Date: 12. March 2014
1050186 5:a912b042151f 5 * $Revision: V1.4.3
1050186 5:a912b042151f 6 *
1050186 5:a912b042151f 7 * Project: CMSIS DSP Library
1050186 5:a912b042151f 8 * Title: arm_const_structs.h
1050186 5:a912b042151f 9 *
1050186 5:a912b042151f 10 * Description: This file has constant structs that are initialized for
1050186 5:a912b042151f 11 * user convenience. For example, some can be given as
1050186 5:a912b042151f 12 * arguments to the arm_cfft_f32() function.
1050186 5:a912b042151f 13 *
1050186 5:a912b042151f 14 * Target Processor: Cortex-M4/Cortex-M3
1050186 5:a912b042151f 15 *
1050186 5:a912b042151f 16 * Redistribution and use in source and binary forms, with or without
1050186 5:a912b042151f 17 * modification, are permitted provided that the following conditions
1050186 5:a912b042151f 18 * are met:
1050186 5:a912b042151f 19 * - Redistributions of source code must retain the above copyright
1050186 5:a912b042151f 20 * notice, this list of conditions and the following disclaimer.
1050186 5:a912b042151f 21 * - Redistributions in binary form must reproduce the above copyright
1050186 5:a912b042151f 22 * notice, this list of conditions and the following disclaimer in
1050186 5:a912b042151f 23 * the documentation and/or other materials provided with the
1050186 5:a912b042151f 24 * distribution.
1050186 5:a912b042151f 25 * - Neither the name of ARM LIMITED nor the names of its contributors
1050186 5:a912b042151f 26 * may be used to endorse or promote products derived from this
1050186 5:a912b042151f 27 * software without specific prior written permission.
1050186 5:a912b042151f 28 *
1050186 5:a912b042151f 29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1050186 5:a912b042151f 30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1050186 5:a912b042151f 31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
1050186 5:a912b042151f 32 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
1050186 5:a912b042151f 33 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
1050186 5:a912b042151f 34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
1050186 5:a912b042151f 35 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
1050186 5:a912b042151f 36 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
1050186 5:a912b042151f 37 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1050186 5:a912b042151f 38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
1050186 5:a912b042151f 39 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1050186 5:a912b042151f 40 * POSSIBILITY OF SUCH DAMAGE.
1050186 5:a912b042151f 41 * -------------------------------------------------------------------- */
1050186 5:a912b042151f 42
1050186 5:a912b042151f 43 #ifndef _ARM_CONST_STRUCTS_H
1050186 5:a912b042151f 44 #define _ARM_CONST_STRUCTS_H
1050186 5:a912b042151f 45
1050186 5:a912b042151f 46 #include "arm_math.h"
1050186 5:a912b042151f 47 #include "arm_common_tables.h"
1050186 5:a912b042151f 48
1050186 5:a912b042151f 49 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len16;
1050186 5:a912b042151f 50 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len32;
1050186 5:a912b042151f 51 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len64;
1050186 5:a912b042151f 52 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len128;
1050186 5:a912b042151f 53 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len256;
1050186 5:a912b042151f 54 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len512;
1050186 5:a912b042151f 55 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len1024;
1050186 5:a912b042151f 56 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len2048;
1050186 5:a912b042151f 57 extern const arm_cfft_instance_f32 arm_cfft_sR_f32_len4096;
1050186 5:a912b042151f 58
1050186 5:a912b042151f 59 #endif