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33 #define HAVE_KERNEL_4x4_VEC 1
34 #define HAVE_KERNEL_4x2_VEC 1
35 #define HAVE_KERNEL_4x1_VEC 1
37 #if defined(HAVE_KERNEL_4x4_VEC) || defined(HAVE_KERNEL_4x2_VEC) || defined(HAVE_KERNEL_4x1_VEC)
38 #include <vecintrin.h>
41 #ifdef HAVE_KERNEL_4x4
43 #elif HAVE_KERNEL_4x4_VEC
45 static void dgemv_kernel_4x4(BLASLONG n, FLOAT **ap, FLOAT *xo, FLOAT *y, FLOAT *alpha)
53 __vector double v_x0 = {x0,x0};
54 __vector double v_x1 = {x1,x1};
55 __vector double v_x2 = {x2,x2};
56 __vector double v_x3 = {x3,x3};
57 __vector double* v_y =(__vector double*)y;
58 __vector double* va0 = (__vector double*)ap[0];
59 __vector double* va1 = (__vector double*)ap[1];
60 __vector double* va2 = (__vector double*)ap[2];
61 __vector double* va3 = (__vector double*)ap[3];
63 for ( i=0; i< n/2; i+=2 )
65 v_y[i] += v_x0 * va0[i] + v_x1 * va1[i] + v_x2 * va2[i] + v_x3 * va3[i] ;
66 v_y[i+1] += v_x0 * va0[i+1] + v_x1 * va1[i+1] + v_x2 * va2[i+1] + v_x3 * va3[i+1] ;
72 static void dgemv_kernel_4x4(BLASLONG n, FLOAT **ap, FLOAT *xo, FLOAT *y, FLOAT *alpha)
75 FLOAT *a0,*a1,*a2,*a3;
76 FLOAT x[4] __attribute__ ((aligned (16)));
83 x[i] = xo[i] * *alpha;
85 for ( i=0; i< n; i+=4 )
87 y[i] += a0[i]*x[0] + a1[i]*x[1] + a2[i]*x[2] + a3[i]*x[3];
88 y[i+1] += a0[i+1]*x[0] + a1[i+1]*x[1] + a2[i+1]*x[2] + a3[i+1]*x[3];
89 y[i+2] += a0[i+2]*x[0] + a1[i+2]*x[1] + a2[i+2]*x[2] + a3[i+2]*x[3];
90 y[i+3] += a0[i+3]*x[0] + a1[i+3]*x[1] + a2[i+3]*x[2] + a3[i+3]*x[3];
97 #ifdef HAVE_KERNEL_4x2
99 #elif HAVE_KERNEL_4x2_VEC
101 static void dgemv_kernel_4x2(BLASLONG n, FLOAT **ap, FLOAT *xo, FLOAT *y, FLOAT *alpha)
107 __vector double v_x0 = {x0,x0};
108 __vector double v_x1 = {x1,x1};
109 __vector double* v_y =(__vector double*)y;
110 __vector double* va0 = (__vector double*)ap[0];
111 __vector double* va1 = (__vector double*)ap[1];
113 for ( i=0; i< n/2; i+=2 )
115 v_y[i] += v_x0 * va0[i] + v_x1 * va1[i] ;
116 v_y[i+1] += v_x0 * va0[i+1] + v_x1 * va1[i+1] ;
121 static void dgemv_kernel_4x2(BLASLONG n, FLOAT **ap, FLOAT *xo, FLOAT *y, FLOAT *alpha)
125 FLOAT x[4] __attribute__ ((aligned (16)));
130 x[i] = xo[i] * *alpha;
132 for ( i=0; i< n; i+=4 )
134 y[i] += a0[i]*x[0] + a1[i]*x[1];
135 y[i+1] += a0[i+1]*x[0] + a1[i+1]*x[1];
136 y[i+2] += a0[i+2]*x[0] + a1[i+2]*x[1];
137 y[i+3] += a0[i+3]*x[0] + a1[i+3]*x[1];
144 #ifdef HAVE_KERNEL_4x1
146 #elif HAVE_KERNEL_4x1_VEC
147 static void dgemv_kernel_4x1(BLASLONG n, FLOAT *ap, FLOAT *xo, FLOAT *y, FLOAT *alpha)
153 __vector double v_x0 = {x0,x0};
154 __vector double* v_y =(__vector double*)y;
155 __vector double* va0 = (__vector double*)ap;
157 for ( i=0; i< n/2; i+=2 )
159 v_y[i] += v_x0 * va0[i] ;
160 v_y[i+1] += v_x0 * va0[i+1] ;
167 static void dgemv_kernel_4x1(BLASLONG n, FLOAT *ap, FLOAT *xo, FLOAT *y, FLOAT *alpha)
171 FLOAT x[4] __attribute__ ((aligned (16)));
175 x[i] = xo[i] * *alpha;
177 for ( i=0; i< n; i+=4 )
180 y[i+1] += a0[i+1]*x[0];
181 y[i+2] += a0[i+2]*x[0];
182 y[i+3] += a0[i+3]*x[0];
191 static void add_y(BLASLONG n, FLOAT *src, FLOAT *dest, BLASLONG inc_dest)
195 for ( i=0; i<n; i++ ){
204 int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *buffer)
217 BLASLONG lda4 = lda << 2;
218 FLOAT xbuffer[8],*ybuffer;
220 if ( m < 1 ) return(0);
221 if ( n < 1 ) return(0);
230 m2 = (m & (NBMAX-1)) - m3 ;
236 while ( NB == NBMAX )
242 if ( m2 == 0 ) break;
255 memset(ybuffer,0,NB*8);
263 for( i = 0; i < n1 ; i++)
265 dgemv_kernel_4x4(NB,ap,x_ptr,ybuffer,&alpha);
276 dgemv_kernel_4x2(NB,ap,x_ptr,ybuffer,&alpha);
284 dgemv_kernel_4x1(NB,a_ptr,x_ptr,ybuffer,&alpha);
295 for( i = 0; i < n1 ; i++)
297 xbuffer[0] = x_ptr[0];
299 xbuffer[1] = x_ptr[0];
301 xbuffer[2] = x_ptr[0];
303 xbuffer[3] = x_ptr[0];
305 dgemv_kernel_4x4(NB,ap,xbuffer,ybuffer,&alpha);
313 for( i = 0; i < n2 ; i++)
315 xbuffer[0] = x_ptr[0];
317 dgemv_kernel_4x1(NB,a_ptr,xbuffer,ybuffer,&alpha);
327 add_y(NB,ybuffer,y_ptr,inc_y);
335 if ( m3 == 0 ) return(0);
344 if ( lda == 3 && inc_x ==1 )
347 for( i = 0; i < ( n & -4 ); i+=4 )
350 temp0 += a_ptr[0] * x_ptr[0] + a_ptr[3] * x_ptr[1];
351 temp1 += a_ptr[1] * x_ptr[0] + a_ptr[4] * x_ptr[1];
352 temp2 += a_ptr[2] * x_ptr[0] + a_ptr[5] * x_ptr[1];
354 temp0 += a_ptr[6] * x_ptr[2] + a_ptr[9] * x_ptr[3];
355 temp1 += a_ptr[7] * x_ptr[2] + a_ptr[10] * x_ptr[3];
356 temp2 += a_ptr[8] * x_ptr[2] + a_ptr[11] * x_ptr[3];
364 temp0 += a_ptr[0] * x_ptr[0];
365 temp1 += a_ptr[1] * x_ptr[0];
366 temp2 += a_ptr[2] * x_ptr[0];
375 for( i = 0; i < n; i++ )
377 temp0 += a_ptr[0] * x_ptr[0];
378 temp1 += a_ptr[1] * x_ptr[0];
379 temp2 += a_ptr[2] * x_ptr[0];
387 y_ptr[0] += alpha * temp0;
389 y_ptr[0] += alpha * temp1;
391 y_ptr[0] += alpha * temp2;
402 if ( lda == 2 && inc_x ==1 )
405 for( i = 0; i < (n & -4) ; i+=4 )
407 temp0 += a_ptr[0] * x_ptr[0] + a_ptr[2] * x_ptr[1];
408 temp1 += a_ptr[1] * x_ptr[0] + a_ptr[3] * x_ptr[1];
409 temp0 += a_ptr[4] * x_ptr[2] + a_ptr[6] * x_ptr[3];
410 temp1 += a_ptr[5] * x_ptr[2] + a_ptr[7] * x_ptr[3];
419 temp0 += a_ptr[0] * x_ptr[0];
420 temp1 += a_ptr[1] * x_ptr[0];
429 for( i = 0; i < n; i++ )
431 temp0 += a_ptr[0] * x_ptr[0];
432 temp1 += a_ptr[1] * x_ptr[0];
440 y_ptr[0] += alpha * temp0;
442 y_ptr[0] += alpha * temp1;
451 if ( lda == 1 && inc_x ==1 )
454 for( i = 0; i < (n & -4); i+=4 )
456 temp += a_ptr[i] * x_ptr[i] + a_ptr[i+1] * x_ptr[i+1] + a_ptr[i+2] * x_ptr[i+2] + a_ptr[i+3] * x_ptr[i+3];
462 temp += a_ptr[i] * x_ptr[i];
469 for( i = 0; i < n; i++ )
471 temp += a_ptr[0] * x_ptr[0];
477 y_ptr[0] += alpha * temp;