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Merge pull request OpenMathLib#4958 from XiWeiGu/x86_64_opt_somatcopy…
…_ct_avx x86_64: opt somatcopy_ct with AVX
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@@ -493,3 +493,4 @@ CSUMKERNEL = zsum_sse.S | |
ZSUMKERNEL = zsum_sse2.S | ||
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SOMATCOPY_RT = omatcopy_rt.c | ||
SOMATCOPY_CT = omatcopy_ct.c |
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@@ -0,0 +1,373 @@ | ||
/*************************************************************************** | ||
Copyright (c) 2024, 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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#ifdef HAVE_AVX | ||
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#define COLS_OF_BLOCK 384 | ||
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/* +r: %0 = src, %1 = dst, %2 = src_ld, %3 = dst_ld, %4 = dst_tmp */ | ||
/* m: %5 = num_rows, %6 = alpha */ | ||
/* xmm15 = alpha */ | ||
#define TRANS_4x4(a1_no,a2_no,a3_no,a4_no,t1_no,t2_no,t3_no,t4_no)\ | ||
"vunpcklps %%xmm"#a2_no",%%xmm"#a1_no",%%xmm"#t1_no"; vunpckhps %%xmm"#a2_no",%%xmm"#a1_no",%%xmm"#t2_no";"\ | ||
"vunpcklps %%xmm"#a4_no",%%xmm"#a3_no",%%xmm"#t3_no"; vunpckhps %%xmm"#a4_no",%%xmm"#a3_no",%%xmm"#t4_no";"\ | ||
"vunpcklpd %%xmm"#t3_no",%%xmm"#t1_no",%%xmm"#a1_no"; vunpckhpd %%xmm"#t3_no",%%xmm"#t1_no",%%xmm"#a2_no";"\ | ||
"vunpcklpd %%xmm"#t4_no",%%xmm"#t2_no",%%xmm"#a3_no"; vunpckhpd %%xmm"#t4_no",%%xmm"#t2_no",%%xmm"#a4_no";" | ||
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#define TRANS_4x8(a1_no,a2_no,a3_no,a4_no,t1_no,t2_no,t3_no,t4_no)\ | ||
"vunpcklps %%ymm"#a2_no",%%ymm"#a1_no",%%ymm"#t1_no"; vunpckhps %%ymm"#a2_no",%%ymm"#a1_no",%%ymm"#t2_no";"\ | ||
"vunpcklps %%ymm"#a4_no",%%ymm"#a3_no",%%ymm"#t3_no"; vunpckhps %%ymm"#a4_no",%%ymm"#a3_no",%%ymm"#t4_no";"\ | ||
"vunpcklpd %%ymm"#t3_no",%%ymm"#t1_no",%%ymm"#a1_no"; vunpckhpd %%ymm"#t3_no",%%ymm"#t1_no",%%ymm"#a2_no";"\ | ||
"vunpcklpd %%ymm"#t4_no",%%ymm"#t2_no",%%ymm"#a3_no"; vunpckhpd %%ymm"#t4_no",%%ymm"#t2_no",%%ymm"#a4_no";" | ||
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#define SAVE_4x4(b1_no,b2_no,b3_no,b4_no)\ | ||
"vmovups %%xmm"#b1_no",(%4); vmovups %%xmm"#b2_no",(%4,%3,1); leaq (%4,%3,2),%4;"\ | ||
"vmovups %%xmm"#b3_no",(%4); vmovups %%xmm"#b4_no",(%4,%3,1); leaq (%4,%3,2),%4;" | ||
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#define SAVE_4x8(b1_no,b2_no,b3_no,b4_no) SAVE_4x4(b1_no,b2_no,b3_no,b4_no)\ | ||
"vextractf128 $1,%%ymm"#b1_no",(%4); vextractf128 $1,%%ymm"#b2_no",(%4,%3,1); leaq (%4,%3,2),%4;"\ | ||
"vextractf128 $1,%%ymm"#b3_no",(%4); vextractf128 $1,%%ymm"#b4_no",(%4,%3,1); leaq (%4,%3,2),%4;" | ||
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#define COPY_4x16 "movq %1,%4; addq $16,%1;"\ | ||
"vmulps (%0),%%ymm15,%%ymm0; vmulps 32(%0),%%ymm15,%%ymm4; vmulps (%0,%2,1),%%ymm15,%%ymm1; vmulps 32(%0,%2,1),%%ymm15,%%ymm5; leaq (%0,%2,2),%0;"\ | ||
"vmulps (%0),%%ymm15,%%ymm2; vmulps 32(%0),%%ymm15,%%ymm6; vmulps (%0,%2,1),%%ymm15,%%ymm3; vmulps 32(%0,%2,1),%%ymm15,%%ymm7; leaq (%0,%2,2),%0;"\ | ||
TRANS_4x8(0,1,2,3,8,9,10,11) SAVE_4x8(0,1,2,3)\ | ||
TRANS_4x8(4,5,6,7,8,9,10,11) SAVE_4x8(4,5,6,7) | ||
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#define COPY_4x8 "movq %1,%4; addq $16,%1;"\ | ||
"vmulps (%0),%%ymm15,%%ymm0; vmulps (%0,%2,1),%%ymm15,%%ymm1; leaq (%0,%2,2),%0;"\ | ||
"vmulps (%0),%%ymm15,%%ymm2; vmulps (%0,%2,1),%%ymm15,%%ymm3; leaq (%0,%2,2),%0;"\ | ||
TRANS_4x8(0,1,2,3,8,9,10,11) SAVE_4x8(0,1,2,3) | ||
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#define COPY_4x4 "movq %1,%4; addq $16,%1;"\ | ||
"vmulps (%0),%%xmm15,%%xmm0; vmulps (%0,%2,1),%%xmm15,%%xmm1; leaq (%0,%2,2),%0;"\ | ||
"vmulps (%0),%%xmm15,%%xmm2; vmulps (%0,%2,1),%%xmm15,%%xmm3; leaq (%0,%2,2),%0;"\ | ||
TRANS_4x4(0,1,2,3,8,9,10,11) SAVE_4x4(0,1,2,3) | ||
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#define COPY_4x2 \ | ||
"vmovsd (%0),%%xmm0; vmovhpd (%0,%2,1),%%xmm0,%%xmm0; vmulps %%xmm15,%%xmm0,%%xmm0; leaq (%0,%2,2),%0;"\ | ||
"vmovsd (%0),%%xmm1; vmovhpd (%0,%2,1),%%xmm1,%%xmm1; vmulps %%xmm15,%%xmm1,%%xmm1; leaq (%0,%2,2),%0;"\ | ||
"vpermilps $216,%%xmm0,%%xmm0; vpermilps $216,%%xmm1,%%xmm1; vunpcklpd %%xmm1,%%xmm0,%%xmm2; vunpckhpd %%xmm1,%%xmm0,%%xmm3;"\ | ||
"vmovups %%xmm2,(%1); vmovups %%xmm3,(%1,%3,1); addq $16,%1;" | ||
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#define COPY_4x1 \ | ||
"vmovss (%0),%%xmm0; vinsertps $16,(%0,%2,1),%%xmm0,%%xmm0; leaq (%0,%2,2),%0;"\ | ||
"vinsertps $32,(%0),%%xmm0,%%xmm0; vinsertps $48,(%0,%2,1),%%xmm0,%%xmm0; leaq (%0,%2,2),%0;"\ | ||
"vmulps %%xmm15,%%xmm0,%%xmm0; vmovups %%xmm0,(%1); addq $16,%1;" | ||
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#define SAVE_2x4(c1_no,c2_no,t1_no,t2_no) \ | ||
"vunpcklps %%xmm"#c2_no",%%xmm"#c1_no",%%xmm"#t1_no"; vmulps %%xmm15,%%xmm"#t1_no",%%xmm"#t1_no";"\ | ||
"vmovsd %%xmm"#t1_no",(%4); vmovhpd %%xmm"#t1_no",(%4,%3,1); leaq (%4,%3,2),%4;"\ | ||
"vunpckhps %%xmm"#c2_no",%%xmm"#c1_no",%%xmm"#t2_no"; vmulps %%xmm15,%%xmm"#t2_no",%%xmm"#t2_no";"\ | ||
"vmovsd %%xmm"#t2_no",(%4); vmovhpd %%xmm"#t2_no",(%4,%3,1); leaq (%4,%3,2),%4;" | ||
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#define COPY_2x16 "movq %1,%4; addq $8,%1;"\ | ||
"vmovups (%0),%%ymm0; vmovups 32(%0),%%ymm2; vmovups (%0,%2,1),%%ymm1; vmovups 32(%0,%2,1),%%ymm3; leaq (%0,%2,2),%0;"\ | ||
"vextractf128 $1,%%ymm0,%%xmm4; vextractf128 $1,%%ymm2,%%xmm6; vextractf128 $1,%%ymm1,%%xmm5; vextractf128 $1,%%ymm3,%%xmm7;"\ | ||
SAVE_2x4(0,1,8,9) SAVE_2x4(4,5,8,9) SAVE_2x4(2,3,8,9) SAVE_2x4(6,7,8,9) | ||
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#define COPY_2x8 "movq %1,%4; addq $8,%1;"\ | ||
"vmovups (%0),%%ymm0; vmovups (%0,%2,1),%%ymm1; leaq (%0,%2,2),%0;"\ | ||
"vextractf128 $1,%%ymm0,%%xmm2; vextractf128 $1,%%ymm1,%%xmm3;"\ | ||
SAVE_2x4(0,1,4,5) SAVE_2x4(2,3,4,5) | ||
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#define COPY_2x4 "movq %1,%4; addq $8,%1;"\ | ||
"vmovups (%0),%%xmm0; vmovups (%0,%2,1),%%xmm1; leaq (%0,%2,2),%0;"\ | ||
SAVE_2x4(0,1,4,5) | ||
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#define COPY_2x2 \ | ||
"vmovsd (%0),%%xmm0; vmovhpd (%0,%2,1),%%xmm0,%%xmm0; vmulps %%xmm15,%%xmm0,%%xmm0; leaq (%0,%2,2),%0; vpermilps $216,%%xmm0,%%xmm0;"\ | ||
"vmovsd %%xmm0,(%1); vmovhpd %%xmm0,(%1,%3,1); addq $8,%1;" | ||
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#define COPY_2x1 \ | ||
"vmovss (%0),%%xmm0; vinsertps $16,(%0,%2,1),%%xmm0,%%xmm0; vmulps %%xmm15,%%xmm0,%%xmm0; leaq (%0,%2,2),%0; vmovsd %%xmm0,(%1); addq $8,%1;" | ||
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#define SAVE_1x4(c1_no)\ | ||
"vmulps %%xmm15,%%xmm"#c1_no",%%xmm"#c1_no"; vmovss %%xmm"#c1_no",(%4); vextractps $1,%%xmm"#c1_no",(%4,%3,1); leaq (%4,%3,2),%4;"\ | ||
"vextractps $2,%%xmm"#c1_no",(%4); vextractps $3,%%xmm"#c1_no",(%4,%3,1); leaq (%4,%3,2),%4;" | ||
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#define COPY_1x16 "movq %1,%4; addq $4,%1;"\ | ||
"vmovups (%0),%%xmm1;" SAVE_1x4(1) "vmovups 16(%0),%%xmm2;" SAVE_1x4(2)\ | ||
"vmovups 32(%0),%%xmm1;" SAVE_1x4(1) "vmovups 48(%0),%%xmm2;" SAVE_1x4(2) "addq %2,%0;" | ||
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#define COPY_1x8 "movq %1,%4; addq $4,%1;"\ | ||
"vmovups (%0),%%xmm1;" SAVE_1x4(1) "vmovups 16(%0),%%xmm2;" SAVE_1x4(2) "addq %2,%0;" | ||
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#define COPY_1x4 "movq %1,%4; addq $4,%1; vmovups (%0),%%xmm1;" SAVE_1x4(1) "addq %2,%0;" | ||
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#define COPY_1x2 "vmovsd (%0),%%xmm1; addq %2,%0; vmulps %%xmm15,%%xmm1,%%xmm1; vmovss %%xmm1,(%1); vextractps $1,%%xmm1,(%1,%3,1); addq $4,%1;" | ||
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#define COPY_1x1 "vmulss (%0),%%xmm15,%%xmm1; vmovss %%xmm1,(%1); addq %2,%0; addq $4,%1;" | ||
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#define COMPUTE(ndim){\ | ||
src = src_base; dst = dst_base;\ | ||
__asm__ __volatile__(\ | ||
"vbroadcastss %6,%%ymm15; movq %5,%%r11; cmpq $4,%%r11; jb "#ndim"32f;"\ | ||
#ndim"31:\n\t"\ | ||
COPY_4x##ndim "subq $4,%%r11; cmpq $4,%%r11; jnb "#ndim"31b;"\ | ||
#ndim"32:\n\t"\ | ||
"cmpq $2,%%r11; jb "#ndim"33f;"\ | ||
COPY_2x##ndim "subq $2,%%r11;"\ | ||
#ndim"33:\n\t"\ | ||
"testq %%r11,%%r11; jz "#ndim"34f;"\ | ||
COPY_1x##ndim "subq $1,%%r11;"\ | ||
#ndim"34:\n\t"\ | ||
:"+r"(src),"+r"(dst),"+r"(src_ld_bytes),"+r"(dst_ld_bytes),"+r"(dst_tmp):"m"(num_cols),"m"(ALPHA):"r11","cc","memory"\ | ||
,"xmm0","xmm1","xmm2","xmm3","xmm4","xmm5","xmm6","xmm7","xmm8","xmm9","xmm10","xmm11","xmm12","xmm13","xmm14","xmm15");\ | ||
} | ||
int CNAME(BLASLONG rows, BLASLONG cols, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *b, BLASLONG ldb){ | ||
float *src, *dst, *dst_tmp=0, *src_base, *dst_base; | ||
uint64_t src_ld_bytes = (uint64_t)lda * sizeof(float), dst_ld_bytes = (uint64_t)ldb * sizeof(float), num_cols = 0; | ||
BLASLONG rows_left, cols_done; float ALPHA = alpha; | ||
if(ALPHA==0.0){ | ||
dst_base = b; | ||
for(rows_left=rows;rows_left>0;rows_left--) {memset(dst_base,0,cols*sizeof(float)); dst_base += ldb;} | ||
return 0; | ||
} | ||
for(cols_done=0;cols_done<cols;cols_done+=num_cols){ | ||
num_cols = cols-cols_done; | ||
if(num_cols > COLS_OF_BLOCK) num_cols = COLS_OF_BLOCK; | ||
rows_left = rows; src_base = a + (int64_t)lda * (int64_t)cols_done; dst_base = b + cols_done; | ||
if(ldb%1024>3 && ldb%1024<1021) for(;rows_left>15;rows_left-=16){COMPUTE(16) src_base += 16; dst_base += 16 * ldb;} | ||
for(;rows_left>7;rows_left-=8){COMPUTE(8) src_base += 8; dst_base += 8 * ldb;} | ||
for(;rows_left>3;rows_left-=4){COMPUTE(4) src_base += 4; dst_base += 4 * ldb;} | ||
for(;rows_left>1;rows_left-=2){COMPUTE(2) src_base += 2; dst_base += 2 * ldb;} | ||
if(rows_left>0){COMPUTE(1) src_base ++; dst_base += ldb;} | ||
} | ||
return 0; | ||
} | ||
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#else | ||
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int CNAME(BLASLONG rows, BLASLONG cols, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *b, BLASLONG ldb) | ||
{ | ||
BLASLONG i, j; | ||
FLOAT *a_offset, *a_offset1, *a_offset2, *a_offset3, *a_offset4; | ||
FLOAT *b_offset, *b_offset1, *b_offset2, *b_offset3, *b_offset4; | ||
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if (rows <= 0) return 0; | ||
if (cols <= 0) return 0; | ||
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a_offset = a; | ||
b_offset = b; | ||
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i = (cols >> 2); | ||
if (i > 0) { | ||
do { | ||
a_offset1 = a_offset; | ||
a_offset2 = a_offset1 + lda; | ||
a_offset3 = a_offset2 + lda; | ||
a_offset4 = a_offset3 + lda; | ||
a_offset += 4 * lda; | ||
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b_offset1 = b_offset; | ||
b_offset2 = b_offset1 + ldb; | ||
b_offset3 = b_offset2 + ldb; | ||
b_offset4 = b_offset3 + ldb; | ||
b_offset += 4; | ||
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j = (rows >> 2); | ||
if (j > 0) { | ||
do { | ||
/* Column 1 of MAT_B */ | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; // Row 1 of MAT_A | ||
*(b_offset2 + 0) = *(a_offset1 + 1)*alpha; | ||
*(b_offset3 + 0) = *(a_offset1 + 2)*alpha; | ||
*(b_offset4 + 0) = *(a_offset1 + 3)*alpha; | ||
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/* Column 2 of MAT_B */ | ||
*(b_offset1 + 1) = *(a_offset2 + 0)*alpha; // Row 2 of MAT_A | ||
*(b_offset2 + 1) = *(a_offset2 + 1)*alpha; | ||
*(b_offset3 + 1) = *(a_offset2 + 2)*alpha; | ||
*(b_offset4 + 1) = *(a_offset2 + 3)*alpha; | ||
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/* Column 3 of MAT_B */ | ||
*(b_offset1 + 2) = *(a_offset3 + 0)*alpha; // Row 3 of MAT_A | ||
*(b_offset2 + 2) = *(a_offset3 + 1)*alpha; | ||
*(b_offset3 + 2) = *(a_offset3 + 2)*alpha; | ||
*(b_offset4 + 2) = *(a_offset3 + 3)*alpha; | ||
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/* Column 4 of MAT_B */ | ||
*(b_offset1 + 3) = *(a_offset4 + 0)*alpha; // Row 4 of MAT_A | ||
*(b_offset2 + 3) = *(a_offset4 + 1)*alpha; | ||
*(b_offset3 + 3) = *(a_offset4 + 2)*alpha; | ||
*(b_offset4 + 3) = *(a_offset4 + 3)*alpha; | ||
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a_offset1 += 4; | ||
a_offset2 += 4; | ||
a_offset3 += 4; | ||
a_offset4 += 4; | ||
b_offset1 += ldb * 4; | ||
b_offset2 += ldb * 4; | ||
b_offset3 += ldb * 4; | ||
b_offset4 += ldb * 4; | ||
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j--; | ||
} while (j > 0); | ||
} // if(j > 0) | ||
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if (rows & 2) { | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; | ||
*(b_offset2 + 0) = *(a_offset1 + 1)*alpha; | ||
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha; | ||
*(b_offset2 + 1) = *(a_offset2 + 1)*alpha; | ||
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*(b_offset1 + 2) = *(a_offset3 + 0)*alpha; | ||
*(b_offset2 + 2) = *(a_offset3 + 1)*alpha; | ||
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*(b_offset1 + 3) = *(a_offset4 + 0)*alpha; | ||
*(b_offset2 + 3) = *(a_offset4 + 1)*alpha; | ||
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a_offset1 += 2; | ||
a_offset2 += 2; | ||
a_offset3 += 2; | ||
a_offset4 += 2; | ||
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b_offset1 += ldb*2; | ||
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} | ||
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if (rows & 1) { | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; | ||
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha; | ||
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*(b_offset1 + 2) = *(a_offset3 + 0)*alpha; | ||
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*(b_offset1 + 3) = *(a_offset4 + 0)*alpha; | ||
} | ||
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i--; | ||
} while (i > 0); | ||
} | ||
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if (cols & 2) { | ||
a_offset1 = a_offset; | ||
a_offset2 = a_offset1 + lda; | ||
a_offset += 2 * lda; | ||
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b_offset1 = b_offset; | ||
b_offset2 = b_offset1 + ldb; | ||
b_offset3 = b_offset2 + ldb; | ||
b_offset4 = b_offset3 + ldb; | ||
b_offset += 2; | ||
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j = (rows >> 2); | ||
if (j > 0){ | ||
do { | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; | ||
*(b_offset2 + 0) = *(a_offset1 + 1)*alpha; | ||
*(b_offset3 + 0) = *(a_offset1 + 2)*alpha; | ||
*(b_offset4 + 0) = *(a_offset1 + 3)*alpha; | ||
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha; | ||
*(b_offset2 + 1) = *(a_offset2 + 1)*alpha; | ||
*(b_offset3 + 1) = *(a_offset2 + 2)*alpha; | ||
*(b_offset4 + 1) = *(a_offset2 + 3)*alpha; | ||
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a_offset1 += 4; | ||
a_offset2 += 4; | ||
b_offset1 += ldb * 4; | ||
b_offset2 += ldb * 4; | ||
b_offset3 += ldb * 4; | ||
b_offset4 += ldb * 4; | ||
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j--; | ||
} while (j > 0); | ||
} | ||
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if (rows & 2){ | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; | ||
*(b_offset2 + 0) = *(a_offset1 + 1)*alpha; | ||
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha; | ||
*(b_offset2 + 1) = *(a_offset2 + 1)*alpha; | ||
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a_offset1 += 2; | ||
a_offset2 += 2; | ||
b_offset1 += ldb*2; | ||
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} | ||
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if (rows & 1){ | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; | ||
*(b_offset1 + 1) = *(a_offset2 + 0)*alpha; | ||
} | ||
} // if (cols & 2) | ||
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if (cols & 1) { | ||
a_offset1 = a_offset; | ||
a_offset += lda; | ||
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b_offset1 = b_offset; | ||
b_offset2 = b_offset1 + ldb; | ||
b_offset3 = b_offset2 + ldb; | ||
b_offset4 = b_offset3 + ldb; | ||
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j = (rows >> 2); | ||
if (j > 0){ | ||
do { | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; | ||
*(b_offset2 + 0) = *(a_offset1 + 1)*alpha; | ||
*(b_offset3 + 0) = *(a_offset1 + 2)*alpha; | ||
*(b_offset4 + 0) = *(a_offset1 + 3)*alpha; | ||
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a_offset1 += 4; | ||
b_offset1 += ldb * 4; | ||
b_offset2 += ldb * 4; | ||
b_offset3 += ldb * 4; | ||
b_offset4 += ldb * 4; | ||
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j--; | ||
} while (j > 0); | ||
} | ||
|
||
if (rows & 2){ | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; | ||
*(b_offset2 + 0) = *(a_offset1 + 1)*alpha; | ||
|
||
a_offset1 += 2; | ||
b_offset1 += ldb * 2; | ||
} | ||
|
||
if (rows & 1){ | ||
*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; | ||
} | ||
} | ||
|
||
return 0; | ||
} | ||
|
||
#endif |