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add csum/zsum kernels (trivially derived from the asum ones)s)
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/*************************************************************************** | ||
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. | ||
*****************************************************************************/ | ||
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#include "common.h" | ||
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#include <arm_neon.h> | ||
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#define N "x0" /* vector length */ | ||
#define X "x1" /* "X" vector address */ | ||
#define INC_X "x2" /* "X" stride */ | ||
#define J "x5" /* loop variable */ | ||
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#define REG0 "wzr" | ||
#define SUMF "s0" | ||
#define SUMFD "d0" | ||
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/******************************************************************************/ | ||
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#define KERNEL_F1 \ | ||
"ldr d1, ["X"] \n" \ | ||
"add "X", "X", #8 \n" \ | ||
"ext v2.8b, v1.8b, v1.8b, #4 \n" \ | ||
"fadd s1, s1, s2 \n" \ | ||
"fadd "SUMF", "SUMF", s1 \n" | ||
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#define KERNEL_F32 \ | ||
"ldr q16, ["X"] \n" \ | ||
"ldr q17, ["X", #16] \n" \ | ||
"ldr q18, ["X", #32] \n" \ | ||
"ldr q19, ["X", #48] \n" \ | ||
"ldp q20, q21, ["X", #64] \n" \ | ||
"ldp q22, q23, ["X", #96] \n" \ | ||
"ldp q24, q25, ["X", #128] \n" \ | ||
"ldp q26, q27, ["X", #160] \n" \ | ||
"fadd v16.4s, v16.4s, v17.4s \n" \ | ||
"fadd v18.4s, v18.4s, v19.4s \n" \ | ||
"ldp q28, q29, ["X", #192] \n" \ | ||
"ldp q30, q31, ["X", #224] \n" \ | ||
"add "X", "X", #256 \n" \ | ||
"fadd v20.4s, v20.4s, v21.4s \n" \ | ||
"fadd v22.4s, v22.4s, v23.4s \n" \ | ||
"PRFM PLDL1KEEP, ["X", #1024] \n" \ | ||
"PRFM PLDL1KEEP, ["X", #1024+64] \n" \ | ||
"fadd v24.4s, v24.4s, v25.4s \n" \ | ||
"fadd v26.4s, v26.4s, v27.4s \n" \ | ||
"fadd v0.4s, v0.4s, v16.4s \n" \ | ||
"fadd v1.4s, v1.4s, v18.4s \n" \ | ||
"fadd v2.4s, v2.4s, v20.4s \n" \ | ||
"fadd v3.4s, v3.4s, v22.4s \n" \ | ||
"PRFM PLDL1KEEP, ["X", #1024+128] \n" \ | ||
"PRFM PLDL1KEEP, ["X", #1024+192] \n" \ | ||
"fadd v28.4s, v28.4s, v29.4s \n" \ | ||
"fadd v30.4s, v30.4s, v31.4s \n" \ | ||
"fadd v4.4s, v4.4s, v24.4s \n" \ | ||
"fadd v5.4s, v5.4s, v26.4s \n" \ | ||
"fadd v6.4s, v6.4s, v28.4s \n" \ | ||
"fadd v7.4s, v7.4s, v30.4s \n" | ||
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#define KERNEL_F32_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" \ | ||
"ext v1.16b, v0.16b, v0.16b, #8 \n" \ | ||
"fadd v0.2s, v0.2s, v1.2s \n" \ | ||
"faddp "SUMF", v0.2s \n" | ||
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#define INIT_S \ | ||
"lsl "INC_X", "INC_X", #3 \n" | ||
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#define KERNEL_S1 \ | ||
"ldr d1, ["X"] \n" \ | ||
"add "X", "X", "INC_X" \n" \ | ||
"ext v2.8b, v1.8b, v1.8b, #4 \n" \ | ||
"fadd s1, s1, s2 \n" \ | ||
"fadd "SUMF", "SUMF", s1 \n" | ||
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#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 | ||
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static FLOAT casum_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x) | ||
{ | ||
FLOAT asum = 0.0 ; | ||
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if ( n < 0 ) return(asum); | ||
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__asm__ __volatile__ ( | ||
" mov "N", %[N_] \n" | ||
" mov "X", %[X_] \n" | ||
" mov "INC_X", %[INCX_] \n" | ||
" fmov "SUMF", "REG0" \n" | ||
" fmov s1, "REG0" \n" | ||
" fmov s2, "REG0" \n" | ||
" fmov s3, "REG0" \n" | ||
" fmov s4, "REG0" \n" | ||
" fmov s5, "REG0" \n" | ||
" fmov s6, "REG0" \n" | ||
" fmov s7, "REG0" \n" | ||
" cmp "N", xzr \n" | ||
" ble 9f //asum_kernel_L999 \n" | ||
" cmp "INC_X", xzr \n" | ||
" ble 9f //asum_kernel_L999 \n" | ||
" cmp "INC_X", #1 \n" | ||
" bne 5f //asum_kernel_S_BEGIN \n" | ||
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"1: //asum_kernel_F_BEGIN: \n" | ||
" asr "J", "N", #5 \n" | ||
" cmp "J", xzr \n" | ||
" beq 3f //asum_kernel_F1 \n" | ||
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"2: //asum_kernel_F32: \n" | ||
" "KERNEL_F32" \n" | ||
" subs "J", "J", #1 \n" | ||
" bne 2b //asum_kernel_F32 \n" | ||
" "KERNEL_F32_FINALIZE" \n" | ||
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"3: //asum_kernel_F1: \n" | ||
" ands "J", "N", #31 \n" | ||
" ble 9f //asum_kernel_L999 \n" | ||
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"4: //asum_kernel_F10: \n" | ||
" "KERNEL_F1" \n" | ||
" subs "J", "J", #1 \n" | ||
" bne 4b //asum_kernel_F10 \n" | ||
" b 9f //asum_kernel_L999 \n" | ||
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"5: //asum_kernel_S_BEGIN: \n" | ||
" "INIT_S" \n" | ||
" asr "J", "N", #2 \n" | ||
" cmp "J", xzr \n" | ||
" ble 7f //asum_kernel_S1 \n" | ||
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"6: //asum_kernel_S4: \n" | ||
" "KERNEL_S1" \n" | ||
" "KERNEL_S1" \n" | ||
" "KERNEL_S1" \n" | ||
" "KERNEL_S1" \n" | ||
" subs "J", "J", #1 \n" | ||
" bne 6b //asum_kernel_S4 \n" | ||
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"7: //asum_kernel_S1: \n" | ||
" ands "J", "N", #3 \n" | ||
" ble 9f //asum_kernel_L999 \n" | ||
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"8: //asum_kernel_S10: \n" | ||
" "KERNEL_S1" \n" | ||
" subs "J", "J", #1 \n" | ||
" bne 8b //asum_kernel_S10 \n" | ||
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"9: //asum_kernel_L999: \n" | ||
" fmov %[ASUM_], "SUMFD" \n" | ||
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: [ASUM_] "=r" (asum) //%0 | ||
: [N_] "r" (n), //%1 | ||
[X_] "r" (x), //%2 | ||
[INCX_] "r" (inc_x) //%3 | ||
: "cc", | ||
"memory", | ||
"x0", "x1", "x2", "x3", "x4", "x5", | ||
"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7" | ||
); | ||
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return asum; | ||
} | ||
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#if defined(SMP) | ||
static int casum_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 = casum_compute(n, x, inc_x); | ||
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return 0; | ||
} | ||
#endif | ||
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FLOAT CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x) | ||
{ | ||
#if defined(SMP) | ||
int nthreads; | ||
FLOAT dummy_alpha; | ||
#endif | ||
FLOAT asum = 0.0; | ||
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#if defined(SMP) | ||
if (inc_x == 0 || n <= 10000) | ||
nthreads = 1; | ||
else | ||
nthreads = num_cpu_avail(1); | ||
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if (nthreads == 1) { | ||
asum = casum_compute(n, x, inc_x); | ||
} else { | ||
int mode, i; | ||
char result[MAX_CPU_NUMBER * sizeof(double) * 2]; | ||
FLOAT *ptr; | ||
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mode = BLAS_SINGLE | BLAS_COMPLEX; | ||
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blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha, | ||
x, inc_x, NULL, 0, result, 0, | ||
( void *)casum_thread_function, nthreads); | ||
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ptr = (FLOAT *)result; | ||
for (i = 0; i < nthreads; i++) { | ||
asum = asum + (*ptr); | ||
ptr = (FLOAT *)(((char *)ptr) + sizeof(double) * 2); | ||
} | ||
} | ||
#else | ||
asum = casum_compute(n, x, inc_x); | ||
#endif | ||
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return asum; | ||
} |
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