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Optimized iamax kernels for CORTEXA57 

Co-Authored-By: Ralph Campbell <ralph.campbell@broadcom.com>
tags/v0.2.16.rc1
Ashwin Sekhar T K 10 years ago
parent
dbb213655e
commit
2610752dbb
4 changed files with 494 additions and 0 deletions
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  1. +6
    -0
      kernel/arm64/KERNEL.CORTEXA57
  2. +124
    -0
      kernel/arm64/idamax.S
  3. +213
    -0
      kernel/arm64/isamax.S
  4. +151
    -0
      kernel/arm64/izamax.S

+ 6
- 0
kernel/arm64/KERNEL.CORTEXA57 View File

@@ -4,3 +4,9 @@ SAMAXKERNEL = amax.S
DAMAXKERNEL = amax.S DAMAXKERNEL = amax.S
CAMAXKERNEL = zamax.S CAMAXKERNEL = zamax.S
ZAMAXKERNEL = zamax.S ZAMAXKERNEL = zamax.S

ISAMAXKERNEL = isamax.S
IDAMAXKERNEL = idamax.S
ICAMAXKERNEL = izamax.S
IZAMAXKERNEL = izamax.S


+ 124
- 0
kernel/arm64/idamax.S View File

@@ -0,0 +1,124 @@
/*******************************************************************************
Copyright (c) 2015, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the OpenBLAS project 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 OPENBLAS PROJECT 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.
*******************************************************************************/

#define ASSEMBLER
#include "common.h"

#define N x0 /* vector length */
#define X x1 /* X vector address */
#define INC_X x2 /* X stride */
#define INDEX x3 /* index of max/min value */
#define Z x4 /* vector index */
#define I x5 /* loop variable */

/*******************************************************************************
* Macro definitions
*******************************************************************************/

#if defined(USE_MIN)
#define COND le
#else
#define COND ge
#endif

#define MAXF d0
#define TMPF d1
#define TMPVF {v1.d}[0]
#define SZ 8

/******************************************************************************/

.macro INIT_S
lsl INC_X, INC_X, #3
ld1 {v0.d}[0], [X], INC_X
mov Z, #1
mov INDEX, Z
fabs MAXF, MAXF
.endm

.macro KERNEL_S1
ld1 TMPVF, [X], INC_X
add Z, Z, #1
fabs TMPF, TMPF
fcmp MAXF, TMPF
fcsel MAXF, MAXF, TMPF, COND
csel INDEX, INDEX, Z, COND
.endm

/*******************************************************************************
* End of macro definitions
*******************************************************************************/

PROLOGUE

cmp N, xzr
ble iamax_kernel_zero
cmp INC_X, xzr
ble iamax_kernel_zero

INIT_S

subs N, N, #1
ble iamax_kernel_L999

asr I, N, #2
cmp I, xzr
ble iamax_kernel_S1

iamax_kernel_S4:

KERNEL_S1
KERNEL_S1
KERNEL_S1
KERNEL_S1

subs I, I, #1
bne iamax_kernel_S4

iamax_kernel_S1:

ands I, N, #3
ble iamax_kernel_L999

iamax_kernel_S10:

KERNEL_S1

subs I, I, #1
bne iamax_kernel_S10

iamax_kernel_L999:

mov x0, INDEX
ret

iamax_kernel_zero:

mov x0, xzr
ret

EPILOGUE

+ 213
- 0
kernel/arm64/isamax.S View File

@@ -0,0 +1,213 @@
/*******************************************************************************
Copyright (c) 2015, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the OpenBLAS project 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 OPENBLAS PROJECT 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.
*******************************************************************************/

#define ASSEMBLER
#include "common.h"

#define N x0 /* vector length */
#define X x1 /* X vector address */
#define INC_X x2 /* X stride */
#define INDEX x3 /* index of max/min value */
#define Z x4 /* vector index */
#define I x5 /* loop variable */
#define X_COPY x6 /* copy of X address */
#define MAXF_Z x7

/*******************************************************************************
* Macro definitions
*******************************************************************************/

#define MAXF s5
#define TMPF s6
#define TMPVF {v6.s}[0]
#define SZ 4

/******************************************************************************/

.macro INIT_F1
ldr MAXF, [X], #SZ
mov Z, #1
mov INDEX, Z
fabs MAXF, MAXF
.endm

.macro KERNEL_F1
ldr TMPF, [X], #SZ
add Z, Z, #1
fabs TMPF, TMPF
fcmp TMPF, MAXF
fcsel MAXF, MAXF, TMPF, le
csel INDEX, INDEX, Z, le
.endm

.macro INIT_F4
ld1 {v0.4s}, [X], #16
fabs v0.4s, v0.4s
fmaxv MAXF, v0.4s
mov Z, #5
mov MAXF_Z, #1
.endm

.macro KERNEL_F4
ld1 {v0.4s}, [X], #16
fabs v0.4s, v0.4s
fmaxv TMPF, v0.4s
PRFM PLDL1KEEP, [X, #512]
fcmp TMPF, MAXF
fcsel MAXF, MAXF, TMPF, le
csel MAXF_Z, MAXF_Z, Z, le
add Z, Z, #4
.endm


.macro KERNEL_F4_FINALIZE
mov INDEX, MAXF_Z
sub MAXF_Z, MAXF_Z, #1
lsl MAXF_Z, MAXF_Z, #2
add X_COPY, X_COPY, MAXF_Z
ldr TMPF, [X_COPY], #SZ
fabs TMPF, TMPF
fcmp TMPF, MAXF
beq KERNEL_F4_FINALIZE_DONE
add INDEX, INDEX, #1
ldr TMPF, [X_COPY], #SZ
fabs TMPF, TMPF
fcmp TMPF, MAXF
beq KERNEL_F4_FINALIZE_DONE
add INDEX, INDEX, #1
ldr TMPF, [X_COPY], #SZ
fabs TMPF, TMPF
fcmp TMPF, MAXF
beq KERNEL_F4_FINALIZE_DONE
add INDEX, INDEX, #1
KERNEL_F4_FINALIZE_DONE:
.endm


.macro INIT_S
lsl INC_X, INC_X, #2
ld1 TMPVF, [X], INC_X
mov Z, #1
mov INDEX, Z
fabs MAXF, TMPF
.endm

.macro KERNEL_S1
ld1 TMPVF, [X], INC_X
add Z, Z, #1
fabs TMPF, TMPF
fcmp TMPF, MAXF
fcsel MAXF, MAXF, TMPF, le
csel INDEX, INDEX, Z, le
.endm

/*******************************************************************************
* End of macro definitions
*******************************************************************************/

PROLOGUE

cmp N, xzr
ble iamax_kernel_zero
cmp INC_X, xzr
ble iamax_kernel_zero

PRFM PLDL1KEEP, [X]
mov X_COPY, X

cmp INC_X, #1
bne iamax_kernel_S_BEGIN

iamax_kernel_F_BEGIN:
asr I, N, #2
cmp I, xzr
beq iamax_kernel_F1_INIT

INIT_F4
subs I, I, #1
beq iamax_kernel_F4_FINALIZE

iamax_kernel_F4:
KERNEL_F4
subs I, I, #1
bne iamax_kernel_F4

iamax_kernel_F4_FINALIZE:
KERNEL_F4_FINALIZE

iamax_kernel_F1:
ands I, N, #3
ble iamax_kernel_L999

iamax_kernel_F10:
KERNEL_F1
subs I, I, #1
bne iamax_kernel_F10
b iamax_kernel_L999

iamax_kernel_F1_INIT:
INIT_F1
subs N, N, #1
b iamax_kernel_F1

iamax_kernel_S_BEGIN:
INIT_S

subs N, N, #1
ble iamax_kernel_L999

asr I, N, #2
cmp I, xzr
ble iamax_kernel_S1

iamax_kernel_S4:
KERNEL_S1
KERNEL_S1
KERNEL_S1
KERNEL_S1

subs I, I, #1
bne iamax_kernel_S4

iamax_kernel_S1:
ands I, N, #3
ble iamax_kernel_L999

iamax_kernel_S10:
KERNEL_S1
subs I, I, #1
bne iamax_kernel_S10

iamax_kernel_L999:
mov x0, INDEX
ret

iamax_kernel_zero:
mov x0, xzr
ret

EPILOGUE

+ 151
- 0
kernel/arm64/izamax.S View File

@@ -0,0 +1,151 @@
/*******************************************************************************
Copyright (c) 2015, The OpenBLAS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the OpenBLAS project 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 OPENBLAS PROJECT 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.
*******************************************************************************/

#define ASSEMBLER
#include "common.h"

#define N x0 /* vector length */
#define X x1 /* X vector address */
#define INC_X x2 /* X stride */
#define INDEX x3 /* index of max/min value */
#define Z x4 /* vector index */
#define I x5 /* loop variable */

/*******************************************************************************
* Macro definitions
*******************************************************************************/

#if defined(USE_MIN)
#define COND le
#else
#define COND ge
#endif

#if !defined(DOUBLE)
#define MAXF s0
#define TMPF s1
#define TMPVF {v1.s}[0]
#define SZ 4
#else
#define MAXF d0
#define TMPF d1
#define TMPVF {v1.d}[0]
#define SZ 8
#endif

/******************************************************************************/

.macro INIT_S
#if !defined(DOUBLE)
lsl INC_X, INC_X, #3
ld1 {v0.2s}, [X], INC_X
mov Z, #1
mov INDEX, Z
fabs v0.2s, v0.2s
ext v1.8b, v0.8b, v0.8b, #4
fadd MAXF, s0, s1
#else
lsl INC_X, INC_X, #4
ld1 {v0.2d}, [X], INC_X
mov Z, #1
mov INDEX, Z
fabs v0.2d, v0.2d
faddp MAXF, v0.2d
#endif
.endm

.macro KERNEL_S1
#if !defined(DOUBLE)
ld1 {v1.2s}, [X], INC_X
add Z, Z, #1
fabs v1.2s, v1.2s
ext v2.8b, v1.8b, v1.8b, #4
fadd TMPF, s1, s2
#else
ld1 {v1.2d}, [X], INC_X
add Z, Z, #1
fabs v1.2d, v1.2d
faddp TMPF, v1.2d
#endif
fcmp MAXF, TMPF
fcsel MAXF, MAXF, TMPF, COND
csel INDEX, INDEX, Z, COND
.endm

/*******************************************************************************
* End of macro definitions
*******************************************************************************/

PROLOGUE

cmp N, xzr
ble iamax_kernel_zero
cmp INC_X, xzr
ble iamax_kernel_zero

INIT_S

subs N, N, #1
ble iamax_kernel_L999

asr I, N, #2
cmp I, xzr
ble iamax_kernel_S1

iamax_kernel_S4:

KERNEL_S1
KERNEL_S1
KERNEL_S1
KERNEL_S1

subs I, I, #1
bne iamax_kernel_S4

iamax_kernel_S1:

ands I, N, #3
ble iamax_kernel_L999

iamax_kernel_S10:

KERNEL_S1

subs I, I, #1
bne iamax_kernel_S10

iamax_kernel_L999:

mov x0, INDEX
ret

iamax_kernel_zero:

mov x0, xzr
ret

EPILOGUE

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