Renesas
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
Japanese version is available in lower part of this page.
このページの後半に日本語版が用意されています．
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。
Diff: cmsis_dsp/MatrixFunctions/arm_mat_trans_q15.c
- Revision:
- 5:a912b042151f
- Parent:
- 4:9cee975aadce
--- a/cmsis_dsp/MatrixFunctions/arm_mat_trans_q15.c Mon Jun 23 09:30:09 2014 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,284 +0,0 @@
-/* ----------------------------------------------------------------------
-* Copyright (C) 2010-2013 ARM Limited. All rights reserved.
-*
-* $Date: 17. January 2013
-* $Revision: V1.4.1
-*
-* Project: CMSIS DSP Library
-* Title: arm_mat_trans_q15.c
-*
-* Description: Q15 matrix transpose.
-*
-* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
-*
-* Redistribution and use in source and binary forms, with or without
-* modification, are permitted provided that the following conditions
-* are met:
-* - Redistributions of source code must retain the above copyright
-* notice, this list of conditions and the following disclaimer.
-* - Redistributions in binary form must reproduce the above copyright
-* notice, this list of conditions and the following disclaimer in
-* the documentation and/or other materials provided with the
-* distribution.
-* - Neither the name of ARM LIMITED nor the names of its contributors
-* may be used to endorse or promote products derived from this
-* software without specific prior written permission.
-*
-* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-* POSSIBILITY OF SUCH DAMAGE.
-* -------------------------------------------------------------------- */
-
-#include "arm_math.h"
-
-/**
- * @ingroup groupMatrix
- */
-
-/**
- * @addtogroup MatrixTrans
- * @{
- */
-
-/*
- * @brief Q15 matrix transpose.
- * @param[in] *pSrc points to the input matrix
- * @param[out] *pDst points to the output matrix
- * @return The function returns either <code>ARM_MATH_SIZE_MISMATCH</code>
- * or <code>ARM_MATH_SUCCESS</code> based on the outcome of size checking.
- */
-
-arm_status arm_mat_trans_q15(
- const arm_matrix_instance_q15 * pSrc,
- arm_matrix_instance_q15 * pDst)
-{
- q15_t *pSrcA = pSrc->pData; /* input data matrix pointer */
- q15_t *pOut = pDst->pData; /* output data matrix pointer */
- uint16_t nRows = pSrc->numRows; /* number of nRows */
- uint16_t nColumns = pSrc->numCols; /* number of nColumns */
- uint16_t col, row = nRows, i = 0u; /* row and column loop counters */
- arm_status status; /* status of matrix transpose */
-
-#ifndef ARM_MATH_CM0_FAMILY
-
- /* Run the below code for Cortex-M4 and Cortex-M3 */
-#ifndef UNALIGNED_SUPPORT_DISABLE
-
- q31_t in; /* variable to hold temporary output */
-
-#else
-
- q15_t in;
-
-#endif /* #ifndef UNALIGNED_SUPPORT_DISABLE */
-
-#ifdef ARM_MATH_MATRIX_CHECK
-
-
- /* Check for matrix mismatch condition */
- if((pSrc->numRows != pDst->numCols) || (pSrc->numCols != pDst->numRows))
- {
- /* Set status as ARM_MATH_SIZE_MISMATCH */
- status = ARM_MATH_SIZE_MISMATCH;
- }
- else
-#endif /* #ifdef ARM_MATH_MATRIX_CHECK */
-
- {
- /* Matrix transpose by exchanging the rows with columns */
- /* row loop */
- do
- {
-
- /* Apply loop unrolling and exchange the columns with row elements */
- col = nColumns >> 2u;
-
- /* The pointer pOut is set to starting address of the column being processed */
- pOut = pDst->pData + i;
-
- /* First part of the processing with loop unrolling. Compute 4 outputs at a time.
- ** a second loop below computes the remaining 1 to 3 samples. */
- while(col > 0u)
- {
-#ifndef UNALIGNED_SUPPORT_DISABLE
-
- /* Read two elements from the row */
- in = *__SIMD32(pSrcA)++;
-
- /* Unpack and store one element in the destination */
-#ifndef ARM_MATH_BIG_ENDIAN
-
- *pOut = (q15_t) in;
-
-#else
-
- *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16);
-
-#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
-
- /* Update the pointer pOut to point to the next row of the transposed matrix */
- pOut += nRows;
-
- /* Unpack and store the second element in the destination */
-
-#ifndef ARM_MATH_BIG_ENDIAN
-
- *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16);
-
-#else
-
- *pOut = (q15_t) in;
-
-#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
-
- /* Update the pointer pOut to point to the next row of the transposed matrix */
- pOut += nRows;
-
- /* Read two elements from the row */
-#ifndef ARM_MATH_BIG_ENDIAN
-
- in = *__SIMD32(pSrcA)++;
-
-#else
-
- in = *__SIMD32(pSrcA)++;
-
-#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
-
- /* Unpack and store one element in the destination */
-#ifndef ARM_MATH_BIG_ENDIAN
-
- *pOut = (q15_t) in;
-
-#else
-
- *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16);
-
-#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
-
- /* Update the pointer pOut to point to the next row of the transposed matrix */
- pOut += nRows;
-
- /* Unpack and store the second element in the destination */
-#ifndef ARM_MATH_BIG_ENDIAN
-
- *pOut = (q15_t) ((in & (q31_t) 0xffff0000) >> 16);
-
-#else
-
- *pOut = (q15_t) in;
-
-#endif /* #ifndef ARM_MATH_BIG_ENDIAN */
-
-#else
- /* Read one element from the row */
- in = *pSrcA++;
-
- /* Store one element in the destination */
- *pOut = in;
-
- /* Update the pointer px to point to the next row of the transposed matrix */
- pOut += nRows;
-
- /* Read one element from the row */
- in = *pSrcA++;
-
- /* Store one element in the destination */
- *pOut = in;
-
- /* Update the pointer px to point to the next row of the transposed matrix */
- pOut += nRows;
-
- /* Read one element from the row */
- in = *pSrcA++;
-
- /* Store one element in the destination */
- *pOut = in;
-
- /* Update the pointer px to point to the next row of the transposed matrix */
- pOut += nRows;
-
- /* Read one element from the row */
- in = *pSrcA++;
-
- /* Store one element in the destination */
- *pOut = in;
-
-#endif /* #ifndef UNALIGNED_SUPPORT_DISABLE */
-
- /* Update the pointer pOut to point to the next row of the transposed matrix */
- pOut += nRows;
-
- /* Decrement the column loop counter */
- col--;
- }
-
- /* Perform matrix transpose for last 3 samples here. */
- col = nColumns % 0x4u;
-
-#else
-
- /* Run the below code for Cortex-M0 */
-
-#ifdef ARM_MATH_MATRIX_CHECK
-
- /* Check for matrix mismatch condition */
- if((pSrc->numRows != pDst->numCols) || (pSrc->numCols != pDst->numRows))
- {
- /* Set status as ARM_MATH_SIZE_MISMATCH */
- status = ARM_MATH_SIZE_MISMATCH;
- }
- else
-#endif /* #ifdef ARM_MATH_MATRIX_CHECK */
-
- {
- /* Matrix transpose by exchanging the rows with columns */
- /* row loop */
- do
- {
- /* The pointer pOut is set to starting address of the column being processed */
- pOut = pDst->pData + i;
-
- /* Initialize column loop counter */
- col = nColumns;
-
-#endif /* #ifndef ARM_MATH_CM0_FAMILY */
-
- while(col > 0u)
- {
- /* Read and store the input element in the destination */
- *pOut = *pSrcA++;
-
- /* Update the pointer pOut to point to the next row of the transposed matrix */
- pOut += nRows;
-
- /* Decrement the column loop counter */
- col--;
- }
-
- i++;
-
- /* Decrement the row loop counter */
- row--;
-
- } while(row > 0u);
-
- /* set status as ARM_MATH_SUCCESS */
- status = ARM_MATH_SUCCESS;
- }
- /* Return to application */
- return (status);
-}
-
-/**
- * @} end of MatrixTrans group
- */