OpenBLAS/kernel/arm64/scal.S

259 lines
5.1 KiB
ArmAsm

/*******************************************************************************
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 x3 /* X vector address */
#define X_COPY x5 /* X vector address */
#define INC_X x4 /* X stride */
#define I x1 /* loop variable */
#define FLAG x9
/*******************************************************************************
* Macro definitions
*******************************************************************************/
#if !defined(DOUBLE)
#define DA s0 /* scale input value */
#define DAV {v0.s}[0]
#define TMPF s1
#define TMPVF {v1.s}[0]
#define SZ 4
#else
#define DA d0 /* scale input value */
#define DAV {v0.d}[0]
#define TMPF d1
#define TMPVF {v1.d}[0]
#define SZ 8
#endif
/******************************************************************************/
.macro KERNEL_F1
ldr TMPF, [X]
fmul TMPF, TMPF, DA
str TMPF, [X], #SZ
.endm
.macro KERNEL_INIT_F8
#if !defined(DOUBLE)
ins v0.s[1], v0.s[0]
ins v0.s[2], v0.s[0]
ins v0.s[3], v0.s[0]
#else
ins v0.d[1], v0.d[0]
#endif
.endm
.macro KERNEL_F8
#if !defined(DOUBLE)
ld1 {v1.4s, v2.4s}, [X]
fmul v1.4s, v1.4s, v0.4s
fmul v2.4s, v2.4s, v0.4s
st1 {v1.4s, v2.4s}, [X], #32
#else // DOUBLE
ld1 {v1.2d, v2.2d, v3.2d, v4.2d}, [X]
fmul v1.2d, v1.2d, v0.2d
fmul v2.2d, v2.2d, v0.2d
fmul v3.2d, v3.2d, v0.2d
fmul v4.2d, v4.2d, v0.2d
st1 {v1.2d, v2.2d, v3.2d, v4.2d}, [X], #64
#endif
PRFM PLDL1KEEP, [X, #1024]
.endm
.macro INIT_S
#if !defined(DOUBLE)
lsl INC_X, INC_X, #2
#else
lsl INC_X, INC_X, #3
#endif
.endm
.macro KERNEL_S1
ldr TMPF, [X]
fmul TMPF, TMPF, DA
st1 TMPVF, [X], INC_X
.endm
.macro KERNEL_S4
#if !defined(DOUBLE)
ldr s1, [X]
add X, X, INC_X
fmul s1, s1, s0
str s1, [X_COPY]
add X_COPY, X_COPY, INC_X
ldr s2, [X]
add X, X, INC_X
fmul s2, s2, s0
str s2, [X_COPY]
add X_COPY, X_COPY, INC_X
ldr s3, [X]
add X, X, INC_X
fmul s3, s3, s0
str s3, [X_COPY]
add X_COPY, X_COPY, INC_X
ldr s4, [X]
add X, X, INC_X
fmul s4, s4, s0
str s4, [X_COPY]
add X_COPY, X_COPY, INC_X
#else
ldr d1, [X]
add X, X, INC_X
fmul d1, d1, d0
str d1, [X_COPY]
add X_COPY, X_COPY, INC_X
ldr d2, [X]
add X, X, INC_X
fmul d2, d2, d0
str d2, [X_COPY]
add X_COPY, X_COPY, INC_X
ldr d3, [X]
add X, X, INC_X
fmul d3, d3, d0
str d3, [X_COPY]
add X_COPY, X_COPY, INC_X
ldr d4, [X]
add X, X, INC_X
fmul d4, d4, d0
str d4, [X_COPY]
add X_COPY, X_COPY, INC_X
#endif
.endm
/*******************************************************************************
* End of macro definitions
*******************************************************************************/
PROLOGUE
cmp N, xzr
ble .Lscal_kernel_L999
ldr FLAG, [sp]
cmp FLAG, #1
beq .Lscal_kernel_nansafe
fcmp DA, #0.0
beq .Lscal_kernel_zero
.Lscal_kernel_nansafe:
cmp INC_X, #1
bne .Lscal_kernel_S_BEGIN
.Lscal_kernel_F_BEGIN:
asr I, N, #3
cmp I, xzr
beq .Lscal_kernel_F1
KERNEL_INIT_F8
.Lscal_kernel_F8:
KERNEL_F8
subs I, I, #1
bne .Lscal_kernel_F8
.Lscal_kernel_F1:
ands I, N, #7
ble .Lscal_kernel_L999
.Lscal_kernel_F10:
KERNEL_F1
subs I, I, #1
bne .Lscal_kernel_F10
mov w0, wzr
ret
.Lscal_kernel_S_BEGIN:
INIT_S
mov X_COPY, X
asr I, N, #2
cmp I, xzr
ble .Lscal_kernel_S1
.Lscal_kernel_S4:
KERNEL_S4
subs I, I, #1
bne .Lscal_kernel_S4
.Lscal_kernel_S1:
ands I, N, #3
ble .Lscal_kernel_L999
.Lscal_kernel_S10:
KERNEL_S1
subs I, I, #1
bne .Lscal_kernel_S10
.Lscal_kernel_L999:
mov w0, wzr
ret
.Lscal_kernel_zero:
INIT_S
.Lscal_kernel_Z1:
st1 DAV, [X], INC_X
subs N, N, #1
bne .Lscal_kernel_Z1
mov w0, wzr
ret
EPILOGUE