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/*******************************************************************************
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 Y x3 /* Y vector address */
#define INC_Y x4 /* Y stride */
#define I x5 /* loop variable */
/*******************************************************************************
* Macro definitions
*******************************************************************************/
#if !defined(DOUBLE)
#if !defined(DSDOT)
#define REG0 wzr
#define DOTF s0
#else // DSDOT
#define REG0 xzr
#define DOTF d0
#endif
#define DOTI s1
#define TMPX s2
#define LD1VX {v2.s}[0]
#define TMPY s3
#define LD1VY {v3.s}[0]
#define TMPVY v3.s[0]
#define SZ 4
#else
#define REG0 xzr
#define DOTF d0
#define DOTI d1
#define TMPX d2
#define LD1VX {v2.d}[0]
#define TMPY d3
#define LD1VY {v3.d}[0]
#define TMPVY v3.d[0]
#define SZ 8
#endif
/******************************************************************************/
.macro KERNEL_F1
ldr TMPX, [X], #SZ
ldr TMPY, [Y], #SZ
#if !defined(DSDOT)
fmadd DOTF, TMPX, TMPY, DOTF
#else // DSDOT
fcvt d3, TMPY
fcvt d2, TMPX
fmul d2, d2, d3
fadd DOTF, DOTF, d2
#endif
.endm
.macro KERNEL_F4
#if !defined(DOUBLE)
ld1 {v2.4s}, [X], #16
ld1 {v3.4s}, [Y], #16
#if !defined(DSDOT)
fmla v0.4s, v2.4s, v3.4s
#else
fcvtl2 v5.2d, v3.4s
fcvtl2 v4.2d, v2.4s
fcvtl v3.2d, v3.2s
fcvtl v2.2d, v2.2s
fmul v4.2d, v4.2d, v5.2d
fmul v2.2d, v2.2d, v3.2d
fadd v2.2d, v2.2d, v4.2d
fadd v0.2d, v0.2d, v2.2d
#endif
#else //DOUBLE
ld1 {v2.2d, v3.2d}, [X], #32
ld1 {v4.2d, v5.2d}, [Y], #32
fmul v2.2d, v2.2d, v4.2d
fmul v3.2d, v3.2d, v5.2d
fadd v0.2d, v0.2d, v2.2d
fadd v0.2d, v0.2d, v3.2d
#endif
PRFM PLDL1KEEP, [X, #1024]
PRFM PLDL1KEEP, [Y, #1024]
.endm
.macro KERNEL_F4_FINALIZE
#if !defined(DOUBLE)
#if !defined(DSDOT)
ext v1.16b, v0.16b, v0.16b, #8
fadd v0.2s, v0.2s, v1.2s
faddp DOTF, v0.2s
#else
faddp DOTF, v0.2d
#endif
#else //DOUBLE
faddp DOTF, v0.2d
#endif
.endm
.macro INIT_S
#if !defined(DOUBLE)
lsl INC_X, INC_X, #2
lsl INC_Y, INC_Y, #2
#else
lsl INC_X, INC_X, #3
lsl INC_Y, INC_Y, #3
#endif
.endm
.macro KERNEL_S1
ld1 LD1VX, [X], INC_X
ld1 LD1VY, [Y], INC_Y
#if !defined(DSDOT)
fmadd DOTF, TMPX, TMPY, DOTF
#else // DSDOT
fcvt d3, TMPY
fcvt d2, TMPX
fmul d2, d2, d3
fadd DOTF, DOTF, d2
#endif
.endm
/*******************************************************************************
* End of macro definitions
*******************************************************************************/
PROLOGUE
fmov DOTF, REG0
#if defined(DOUBLE)
fmov d6, DOTF
#endif
cmp N, xzr
ble .Ldot_kernel_L999
cmp INC_X, #1
bne .Ldot_kernel_S_BEGIN
cmp INC_Y, #1
bne .Ldot_kernel_S_BEGIN
.Ldot_kernel_F_BEGIN:
asr I, N, #2
cmp I, xzr
beq .Ldot_kernel_F1
.Ldot_kernel_F4:
KERNEL_F4
subs I, I, #1
bne .Ldot_kernel_F4
KERNEL_F4_FINALIZE
.Ldot_kernel_F1:
ands I, N, #3
ble .Ldot_kernel_L999
.Ldot_kernel_F10:
KERNEL_F1
subs I, I, #1
bne .Ldot_kernel_F10
ret
.Ldot_kernel_S_BEGIN:
INIT_S
asr I, N, #2
cmp I, xzr
ble .Ldot_kernel_S1
.Ldot_kernel_S4:
KERNEL_S1
KERNEL_S1
KERNEL_S1
KERNEL_S1
subs I, I, #1
bne .Ldot_kernel_S4
.Ldot_kernel_S1:
ands I, N, #3
ble .Ldot_kernel_L999
.Ldot_kernel_S10:
KERNEL_S1
subs I, I, #1
bne .Ldot_kernel_S10
.Ldot_kernel_L999:
ret
EPILOGUE
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