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THUNDERX2T99: Add Optimized SDOT Implementation

tags/v0.2.20^2
Ashwin Sekhar T K 8 years ago
parent
faba876fda
commit
f036be9ce2
3 changed files with 425 additions and 270 deletions
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  1. +2
    -1
      kernel/arm64/KERNEL.THUNDERX2T99
  2. +0
    -269
      kernel/arm64/ddot_thunderx2t99.c
  3. +423
    -0
      kernel/arm64/dot_thunderx2t99.c

+ 2
- 1
kernel/arm64/KERNEL.THUNDERX2T99 View File

@@ -25,7 +25,8 @@ CNRM2KERNEL = scnrm2_thunderx2t99.c


DAXPYKERNEL = daxpy_thunderx2t99.S DAXPYKERNEL = daxpy_thunderx2t99.S


DDOTKERNEL = ddot_thunderx2t99.c
DDOTKERNEL = dot_thunderx2t99.c
SDOTKERNEL = dot_thunderx2t99.c




ifeq ($(DGEMM_UNROLL_M)x$(DGEMM_UNROLL_N), 8x4) ifeq ($(DGEMM_UNROLL_M)x$(DGEMM_UNROLL_N), 8x4)


+ 0
- 269
kernel/arm64/ddot_thunderx2t99.c View File

@@ -1,269 +0,0 @@
/***************************************************************************
Copyright (c) 2017, 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.
*****************************************************************************/


#include "common.h"

#include <arm_neon.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 J "x5" /* loop variable */

#define REG0 "xzr"
#define DOTF "d0"
#define TMPX "d16"
#define LD1VX "{v16.d}[0]"
#define TMPY "d24"
#define LD1VY "{v24.d}[0]"
#define SZ "8"

#if defined(SMP)
extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
void *c, BLASLONG ldc, int (*function)(), int nthreads);
#endif


static FLOAT ddot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
{
FLOAT dot = 0.0 ;

if ( n < 0 ) return(dot);

__asm__ __volatile__ (
" mov "N", %[N_] \n"
" mov "X", %[X_] \n"
" mov "INC_X", %[INCX_] \n"
" mov "Y", %[Y_] \n"
" mov "INC_Y", %[INCY_] \n"
" fmov "DOTF", "REG0" \n"
" fmov d1, "REG0" \n"
" fmov d2, "REG0" \n"
" fmov d3, "REG0" \n"
" fmov d4, "REG0" \n"
" fmov d5, "REG0" \n"
" fmov d6, "REG0" \n"
" fmov d7, "REG0" \n"

" cmp "N", xzr \n"
" ble .Ldot_kernel_L999 \n"

" cmp "INC_X", #1 \n"
" bne .Ldot_kernel_S_BEGIN \n"
" cmp "INC_Y", #1 \n"
" bne .Ldot_kernel_S_BEGIN \n"

".Ldot_kernel_F_BEGIN: \n"
" asr "J", "N", #5 \n"
" cmp "J", xzr \n"
" beq .Ldot_kernel_F1 \n"

" .align 5 \n"
".Ldot_kernel_F32: \n"
" ldp q16, q17, ["X"] \n"
" ldp q24, q25, ["Y"] \n"
" ldp q18, q19, ["X", #32] \n"
" ldp q26, q27, ["Y", #32] \n"
" fmla v0.2d, v16.2d, v24.2d \n"
" fmla v1.2d, v17.2d, v25.2d \n"
" ldp q20, q21, ["X", #64] \n"
" ldp q28, q29, ["Y", #64] \n"
" fmla v2.2d, v18.2d, v26.2d \n"
" fmla v3.2d, v19.2d, v27.2d \n"
" ldp q22, q23, ["X", #96] \n"
" ldp q30, q31, ["Y", #96] \n"
" add "Y", "Y", #128 \n"
" add "X", "X", #128 \n"
" fmla v4.2d, v20.2d, v28.2d \n"
" fmla v5.2d, v21.2d, v29.2d \n"
" PRFM PLDL1KEEP, ["X", #896] \n"
" PRFM PLDL1KEEP, ["Y", #896] \n"
" PRFM PLDL1KEEP, ["X", #896+64] \n"
" PRFM PLDL1KEEP, ["Y", #896+64] \n"
" fmla v6.2d, v22.2d, v30.2d \n"
" fmla v7.2d, v23.2d, v31.2d \n"

" ldp q16, q17, ["X"] \n"
" ldp q24, q25, ["Y"] \n"
" ldp q18, q19, ["X", #32] \n"
" ldp q26, q27, ["Y", #32] \n"
" fmla v0.2d, v16.2d, v24.2d \n"
" fmla v1.2d, v17.2d, v25.2d \n"
" ldp q20, q21, ["X", #64] \n"
" ldp q28, q29, ["Y", #64] \n"
" fmla v2.2d, v18.2d, v26.2d \n"
" fmla v3.2d, v19.2d, v27.2d \n"
" ldp q22, q23, ["X", #96] \n"
" ldp q30, q31, ["Y", #96] \n"
" add "Y", "Y", #128 \n"
" add "X", "X", #128 \n"
" fmla v4.2d, v20.2d, v28.2d \n"
" fmla v5.2d, v21.2d, v29.2d \n"
" PRFM PLDL1KEEP, ["X", #896] \n"
" PRFM PLDL1KEEP, ["Y", #896] \n"
" PRFM PLDL1KEEP, ["X", #896+64] \n"
" PRFM PLDL1KEEP, ["Y", #896+64] \n"
" fmla v6.2d, v22.2d, v30.2d \n"
" fmla v7.2d, v23.2d, v31.2d \n"

" subs "J", "J", #1 \n"
" bne .Ldot_kernel_F32 \n"

" fadd v0.2d, v0.2d, v1.2d \n"
" fadd v2.2d, v2.2d, v3.2d \n"
" fadd v4.2d, v4.2d, v5.2d \n"
" fadd v6.2d, v6.2d, v7.2d \n"
" fadd v0.2d, v0.2d, v2.2d \n"
" fadd v4.2d, v4.2d, v6.2d \n"
" fadd v0.2d, v0.2d, v4.2d \n"
" faddp "DOTF", v0.2d \n"

".Ldot_kernel_F1: \n"
" ands "J", "N", #31 \n"
" ble .Ldot_kernel_L999 \n"

".Ldot_kernel_F10: \n"
" ldr "TMPX", ["X"] \n"
" ldr "TMPY", ["Y"] \n"
" add "X", "X", #"SZ" \n"
" add "Y", "Y", #"SZ" \n"
" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"

" subs "J", "J", #1 \n"
" bne .Ldot_kernel_F10 \n"

" b .Ldot_kernel_L999 \n"

".Ldot_kernel_S_BEGIN: \n"
" lsl "INC_X", "INC_X", #3 \n"
" lsl "INC_Y", "INC_Y", #3 \n"
" asr "J", "N", #2 \n"
" cmp "J", xzr \n"
" ble .Ldot_kernel_S1 \n"

".Ldot_kernel_S4: \n"
" ld1 "LD1VX", ["X"], "INC_X" \n"
" ld1 "LD1VY", ["Y"], "INC_Y" \n"
" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
" ld1 "LD1VX", ["X"], "INC_X" \n"
" ld1 "LD1VY", ["Y"], "INC_Y" \n"
" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
" ld1 "LD1VX", ["X"], "INC_X" \n"
" ld1 "LD1VY", ["Y"], "INC_Y" \n"
" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
" ld1 "LD1VX", ["X"], "INC_X" \n"
" ld1 "LD1VY", ["Y"], "INC_Y" \n"
" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
" subs "J", "J", #1 \n"
" bne .Ldot_kernel_S4 \n"

".Ldot_kernel_S1: \n"
" ands "J", "N", #3 \n"
" ble .Ldot_kernel_L999 \n"

".Ldot_kernel_S10: \n"
" ld1 "LD1VX", ["X"], "INC_X" \n"
" ld1 "LD1VY", ["Y"], "INC_Y" \n"
" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"
" subs "J", "J", #1 \n"
" bne .Ldot_kernel_S10 \n"

".Ldot_kernel_L999: \n"
" fmov %[DOT_], "DOTF" \n"

: [DOT_] "=r" (dot) //%0
: [N_] "r" (n), //%1
[X_] "r" (x), //%2
[INCX_] "r" (inc_x), //%3
[Y_] "r" (y), //%4
[INCY_] "r" (inc_y) //%5
: "cc",
"memory",
"x0", "x1", "x2", "x3", "x4", "x5",
"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7"
);

return(dot);
}

#if defined(SMP)
static int ddot_thread_function(BLASLONG n, BLASLONG dummy0,
BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y,
BLASLONG inc_y, FLOAT *result, BLASLONG dummy3)
{
*result = ddot_compute(n, x, inc_x, y, inc_y);

return 0;
}
#endif

FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
{
#if defined(SMP)
int nthreads;
FLOAT dummy_alpha;
#endif
FLOAT dot = 0.0;

#if defined(SMP)
nthreads = num_cpu_avail(1);

if (inc_x == 0 || inc_y == 0)
nthreads = 1;

if (n <= 10000)
nthreads = 1;

if (nthreads == 1) {
dot = ddot_compute(n, x, inc_x, y, inc_y);
} else {
int mode, i;
char result[MAX_CPU_NUMBER * sizeof(double) * 2];
FLOAT *ptr;

mode = BLAS_DOUBLE | BLAS_REAL;

blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
x, inc_x, y, inc_y, result, 0,
( void *)ddot_thread_function, nthreads);

ptr = (FLOAT *)result;
for (i = 0; i < nthreads; i++) {
dot = dot + (*ptr);
ptr = (FLOAT *)(((char *)ptr) + sizeof(double) * 2);
}
}
#else
dot = ddot_compute(n, x, inc_x, y, inc_y);
#endif

return dot;
}

+ 423
- 0
kernel/arm64/dot_thunderx2t99.c View File

@@ -0,0 +1,423 @@
/***************************************************************************
Copyright (c) 2017, 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.
*****************************************************************************/


#include "common.h"

#include <arm_neon.h>

#if !defined(DSDOT)
#define RETURN_TYPE FLOAT
#else
#define RETURN_TYPE double
#endif

#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 J "x5" /* loop variable */

#if !defined(DOUBLE)
#if !defined(DSDOT)
#define REG0 "wzr"
#define DOTF "s0"
#define TMPX "s16"
#define TMPY "s24"
#define INC_SHIFT "2"
#define N_DIV_SHIFT "6"
#define N_REM_MASK "63"
#else
#define REG0 "xzr"
#define DOTF "d0"
#define TMPX "s16"
#define TMPX1 "d2"
#define TMPY "s24"
#define TMPY1 "d3"
#define INC_SHIFT "2"
#define N_DIV_SHIFT "4"
#define N_REM_MASK "15"
#endif
#else
#define REG0 "xzr"
#define DOTF "d0"
#define TMPX "d16"
#define TMPY "d24"
#define INC_SHIFT "3"
#define N_DIV_SHIFT "5"
#define N_REM_MASK "31"
#endif

#if !defined(DOUBLE)

#if !defined(DSDOT)
#define KERNEL_F1 \
" ldr "TMPX", ["X"] \n" \
" ldr "TMPY", ["Y"] \n" \
" add "X", "X", "INC_X" \n" \
" add "Y", "Y", "INC_Y" \n" \
" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"

#define KERNEL_F \
" ldp q16, q17, ["X"] \n" \
" ldp q24, q25, ["Y"] \n" \
" ldp q18, q19, ["X", #32] \n" \
" ldp q26, q27, ["Y", #32] \n" \
" fmla v0.4s, v16.4s, v24.4s \n" \
" fmla v1.4s, v17.4s, v25.4s \n" \
" ldp q20, q21, ["X", #64] \n" \
" ldp q28, q29, ["Y", #64] \n" \
" fmla v2.4s, v18.4s, v26.4s \n" \
" fmla v3.4s, v19.4s, v27.4s \n" \
" ldp q22, q23, ["X", #96] \n" \
" ldp q30, q31, ["Y", #96] \n" \
" add "Y", "Y", #128 \n" \
" add "X", "X", #128 \n" \
" fmla v4.4s, v20.4s, v28.4s \n" \
" fmla v5.4s, v21.4s, v29.4s \n" \
" PRFM PLDL1KEEP, ["X", #896] \n" \
" PRFM PLDL1KEEP, ["Y", #896] \n" \
" PRFM PLDL1KEEP, ["X", #896+64] \n" \
" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
" fmla v6.4s, v22.4s, v30.4s \n" \
" fmla v7.4s, v23.4s, v31.4s \n" \
" ldp q16, q17, ["X"] \n" \
" ldp q24, q25, ["Y"] \n" \
" ldp q18, q19, ["X", #32] \n" \
" ldp q26, q27, ["Y", #32] \n" \
" fmla v0.4s, v16.4s, v24.4s \n" \
" fmla v1.4s, v17.4s, v25.4s \n" \
" ldp q20, q21, ["X", #64] \n" \
" ldp q28, q29, ["Y", #64] \n" \
" fmla v2.4s, v18.4s, v26.4s \n" \
" fmla v3.4s, v19.4s, v27.4s \n" \
" ldp q22, q23, ["X", #96] \n" \
" ldp q30, q31, ["Y", #96] \n" \
" add "Y", "Y", #128 \n" \
" add "X", "X", #128 \n" \
" fmla v4.4s, v20.4s, v28.4s \n" \
" fmla v5.4s, v21.4s, v29.4s \n" \
" PRFM PLDL1KEEP, ["X", #896] \n" \
" PRFM PLDL1KEEP, ["Y", #896] \n" \
" PRFM PLDL1KEEP, ["X", #896+64] \n" \
" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
" fmla v6.4s, v22.4s, v30.4s \n" \
" fmla v7.4s, v23.4s, v31.4s \n"

#define KERNEL_F_FINALIZE \
" fadd v0.4s, v0.4s, v1.4s \n" \
" fadd v2.4s, v2.4s, v3.4s \n" \
" fadd v4.4s, v4.4s, v5.4s \n" \
" fadd v6.4s, v6.4s, v7.4s \n" \
" fadd v0.4s, v0.4s, v2.4s \n" \
" fadd v4.4s, v4.4s, v6.4s \n" \
" fadd v0.4s, v0.4s, v4.4s \n" \
" faddp v0.4s, v0.4s, v0.4s \n" \
" faddp v0.4s, v0.4s, v0.4s \n"

#else /* !defined(DSDOT) */
#define KERNEL_F1 \
" ldr "TMPX", ["X"] \n" \
" ldr "TMPY", ["Y"] \n" \
" add "X", "X", "INC_X" \n" \
" add "Y", "Y", "INC_Y" \n" \
" fcvt "TMPX1", "TMPX" \n" \
" fcvt "TMPY1", "TMPY" \n" \
" fmul "TMPX1", "TMPX1", "TMPY1" \n" \
" fadd "DOTF", "DOTF", "TMPX1" \n"


#define KERNEL_F \
" ldp q18, q19, ["X"] \n" \
" ldp q26, q27, ["Y"] \n" \
" fcvtl v16.2d, v18.2s \n" \
" fcvtl2 v17.2d, v18.4s \n" \
" fcvtl v18.2d, v19.2s \n" \
" fcvtl2 v19.2d, v19.4s \n" \
" fcvtl v24.2d, v26.2s \n" \
" fcvtl2 v25.2d, v26.4s \n" \
" fcvtl v26.2d, v27.2s \n" \
" fcvtl2 v27.2d, v27.4s \n" \
" ldp q22, q23, ["X", #32] \n" \
" ldp q30, q31, ["Y", #32] \n" \
" fcvtl v20.2d, v22.2s \n" \
" fcvtl2 v21.2d, v22.4s \n" \
" fcvtl v22.2d, v23.2s \n" \
" fcvtl2 v23.2d, v23.4s \n" \
" fcvtl v28.2d, v30.2s \n" \
" fcvtl2 v29.2d, v30.4s \n" \
" fcvtl v30.2d, v31.2s \n" \
" fcvtl2 v31.2d, v31.4s \n" \
" PRFM PLDL1KEEP, ["X", #896] \n" \
" PRFM PLDL1KEEP, ["Y", #896] \n" \
" PRFM PLDL1KEEP, ["X", #896+64] \n" \
" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
" fmla v0.2d, v16.2d, v24.2d \n" \
" fmla v1.2d, v17.2d, v25.2d \n" \
" fmla v2.2d, v18.2d, v26.2d \n" \
" fmla v3.2d, v19.2d, v27.2d \n" \
" add "Y", "Y", #64 \n" \
" add "X", "X", #64 \n" \
" fmla v4.2d, v20.2d, v28.2d \n" \
" fmla v5.2d, v21.2d, v29.2d \n" \
" fmla v6.2d, v22.2d, v30.2d \n" \
" fmla v7.2d, v23.2d, v31.2d \n"

#define KERNEL_F_FINALIZE \
" fadd v0.2d, v0.2d, v1.2d \n" \
" fadd v2.2d, v2.2d, v3.2d \n" \
" fadd v4.2d, v4.2d, v5.2d \n" \
" fadd v6.2d, v6.2d, v7.2d \n" \
" fadd v0.2d, v0.2d, v2.2d \n" \
" fadd v4.2d, v4.2d, v6.2d \n" \
" fadd v0.2d, v0.2d, v4.2d \n" \
" faddp "DOTF", v0.2d \n"
#endif /* !defined(DSDOT) */

#else /* !defined(DOUBLE) */
#define KERNEL_F1 \
" ldr "TMPX", ["X"] \n" \
" ldr "TMPY", ["Y"] \n" \
" add "X", "X", "INC_X" \n" \
" add "Y", "Y", "INC_Y" \n" \
" fmadd "DOTF", "TMPX", "TMPY", "DOTF" \n"

#define KERNEL_F \
" ldp q16, q17, ["X"] \n" \
" ldp q24, q25, ["Y"] \n" \
" ldp q18, q19, ["X", #32] \n" \
" ldp q26, q27, ["Y", #32] \n" \
" fmla v0.2d, v16.2d, v24.2d \n" \
" fmla v1.2d, v17.2d, v25.2d \n" \
" ldp q20, q21, ["X", #64] \n" \
" ldp q28, q29, ["Y", #64] \n" \
" fmla v2.2d, v18.2d, v26.2d \n" \
" fmla v3.2d, v19.2d, v27.2d \n" \
" ldp q22, q23, ["X", #96] \n" \
" ldp q30, q31, ["Y", #96] \n" \
" add "Y", "Y", #128 \n" \
" add "X", "X", #128 \n" \
" fmla v4.2d, v20.2d, v28.2d \n" \
" fmla v5.2d, v21.2d, v29.2d \n" \
" PRFM PLDL1KEEP, ["X", #896] \n" \
" PRFM PLDL1KEEP, ["Y", #896] \n" \
" PRFM PLDL1KEEP, ["X", #896+64] \n" \
" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
" fmla v6.2d, v22.2d, v30.2d \n" \
" fmla v7.2d, v23.2d, v31.2d \n" \
" ldp q16, q17, ["X"] \n" \
" ldp q24, q25, ["Y"] \n" \
" ldp q18, q19, ["X", #32] \n" \
" ldp q26, q27, ["Y", #32] \n" \
" fmla v0.2d, v16.2d, v24.2d \n" \
" fmla v1.2d, v17.2d, v25.2d \n" \
" ldp q20, q21, ["X", #64] \n" \
" ldp q28, q29, ["Y", #64] \n" \
" fmla v2.2d, v18.2d, v26.2d \n" \
" fmla v3.2d, v19.2d, v27.2d \n" \
" ldp q22, q23, ["X", #96] \n" \
" ldp q30, q31, ["Y", #96] \n" \
" add "Y", "Y", #128 \n" \
" add "X", "X", #128 \n" \
" fmla v4.2d, v20.2d, v28.2d \n" \
" fmla v5.2d, v21.2d, v29.2d \n" \
" PRFM PLDL1KEEP, ["X", #896] \n" \
" PRFM PLDL1KEEP, ["Y", #896] \n" \
" PRFM PLDL1KEEP, ["X", #896+64] \n" \
" PRFM PLDL1KEEP, ["Y", #896+64] \n" \
" fmla v6.2d, v22.2d, v30.2d \n" \
" fmla v7.2d, v23.2d, v31.2d \n"

#define KERNEL_F_FINALIZE \
" fadd v0.2d, v0.2d, v1.2d \n" \
" fadd v2.2d, v2.2d, v3.2d \n" \
" fadd v4.2d, v4.2d, v5.2d \n" \
" fadd v6.2d, v6.2d, v7.2d \n" \
" fadd v0.2d, v0.2d, v2.2d \n" \
" fadd v4.2d, v4.2d, v6.2d \n" \
" fadd v0.2d, v0.2d, v4.2d \n" \
" faddp "DOTF", v0.2d \n"
#endif /* !defined(DOUBLE) */

#if defined(SMP)
extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
void *c, BLASLONG ldc, int (*function)(), int nthreads);
#endif

static RETURN_TYPE dot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
{
RETURN_TYPE dot = 0.0 ;

if ( n < 0 ) return dot;

__asm__ __volatile__ (
" mov "N", %[N_] \n"
" mov "X", %[X_] \n"
" mov "INC_X", %[INCX_] \n"
" mov "Y", %[Y_] \n"
" mov "INC_Y", %[INCY_] \n"
" fmov "DOTF", "REG0" \n"
" fmov d1, xzr \n"
" fmov d2, xzr \n"
" fmov d3, xzr \n"
" fmov d4, xzr \n"
" fmov d5, xzr \n"
" fmov d6, xzr \n"
" fmov d7, xzr \n"
" cmp "N", xzr \n"
" ble .Ldot_kernel_L999 \n"
" cmp "INC_X", #1 \n"
" bne .Ldot_kernel_S_BEGIN \n"
" cmp "INC_Y", #1 \n"
" bne .Ldot_kernel_S_BEGIN \n"

".Ldot_kernel_F_BEGIN: \n"
" lsl "INC_X", "INC_X", "INC_SHIFT" \n"
" lsl "INC_Y", "INC_Y", "INC_SHIFT" \n"
" asr "J", "N", #"N_DIV_SHIFT" \n"
" cmp "J", xzr \n"
" beq .Ldot_kernel_F1 \n"

" .align 5 \n"
".Ldot_kernel_F: \n"
" "KERNEL_F" \n"
" subs "J", "J", #1 \n"
" bne .Ldot_kernel_F \n"
" "KERNEL_F_FINALIZE" \n"

".Ldot_kernel_F1: \n"
" ands "J", "N", #"N_REM_MASK" \n"
" ble .Ldot_kernel_L999 \n"

".Ldot_kernel_F10: \n"
" "KERNEL_F1" \n"
" subs "J", "J", #1 \n"
" bne .Ldot_kernel_F10 \n"
" b .Ldot_kernel_L999 \n"

".Ldot_kernel_S_BEGIN: \n"
" lsl "INC_X", "INC_X", "INC_SHIFT" \n"
" lsl "INC_Y", "INC_Y", "INC_SHIFT" \n"
" asr "J", "N", #2 \n"
" cmp "J", xzr \n"
" ble .Ldot_kernel_S1 \n"

".Ldot_kernel_S4: \n"
" "KERNEL_F1" \n"
" "KERNEL_F1" \n"
" "KERNEL_F1" \n"
" "KERNEL_F1" \n"
" subs "J", "J", #1 \n"
" bne .Ldot_kernel_S4 \n"

".Ldot_kernel_S1: \n"
" ands "J", "N", #3 \n"
" ble .Ldot_kernel_L999 \n"

".Ldot_kernel_S10: \n"
" "KERNEL_F1" \n"
" subs "J", "J", #1 \n"
" bne .Ldot_kernel_S10 \n"

".Ldot_kernel_L999: \n"
" str "DOTF", [%[DOT_]] \n"

:
: [DOT_] "r" (&dot), //%0
[N_] "r" (n), //%1
[X_] "r" (x), //%2
[INCX_] "r" (inc_x), //%3
[Y_] "r" (y), //%4
[INCY_] "r" (inc_y) //%5
: "cc",
"memory",
"x0", "x1", "x2", "x3", "x4", "x5",
"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7"
);

return dot;
}

#if defined(SMP)
static int dot_thread_function(BLASLONG n, BLASLONG dummy0,
BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y,
BLASLONG inc_y, FLOAT *result, BLASLONG dummy3)
{
*(RETURN_TYPE *)result = dot_compute(n, x, inc_x, y, inc_y);

return 0;
}
#endif

RETURN_TYPE CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
{
#if defined(SMP)
int nthreads;
FLOAT dummy_alpha;
#endif
RETURN_TYPE dot = 0.0;

#if defined(SMP)
nthreads = num_cpu_avail(1);

if (inc_x == 0 || inc_y == 0)
nthreads = 1;

if (n <= 10000)
nthreads = 1;

if (nthreads == 1) {
dot = dot_compute(n, x, inc_x, y, inc_y);
} else {
int mode, i;
char result[MAX_CPU_NUMBER * sizeof(double) * 2];
RETURN_TYPE *ptr;

#if !defined(DOUBLE)
mode = BLAS_SINGLE | BLAS_REAL;
#else
mode = BLAS_DOUBLE | BLAS_REAL;
#endif

blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
x, inc_x, y, inc_y, result, 0,
( void *)dot_thread_function, nthreads);

ptr = (RETURN_TYPE *)result;
for (i = 0; i < nthreads; i++) {
dot = dot + (*ptr);
ptr = (RETURN_TYPE *)(((char *)ptr) + sizeof(double) * 2);
}
}
#else
dot = dot_compute(n, x, inc_x, y, inc_y);
#endif

return dot;
}

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