1 /*
3 BLIS
4 An object-based framework for developing high-performance BLAS-like
5 libraries.
7 Copyright (C) 2014, The University of Texas at Austin
9 Redistribution and use in source and binary forms, with or without
10 modification, are permitted provided that the following conditions are
11 met:
12 - Redistributions of source code must retain the above copyright
13 notice, this list of conditions and the following disclaimer.
14 - Redistributions in binary form must reproduce the above copyright
15 notice, this list of conditions and the following disclaimer in the
16 documentation and/or other materials provided with the distribution.
17 - Neither the name of The University of Texas at Austin nor the names
18 of its contributors may be used to endorse or promote products
19 derived from this software without specific prior written permission.
21 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
35 #include "blis.h"
37 #define FUNCPTR_T trmv_fp
39 typedef void (*FUNCPTR_T)(
40 uplo_t uplo,
41 trans_t trans,
42 diag_t diag,
43 dim_t m,
44 void* alpha,
45 void* a, inc_t rs_a, inc_t cs_a,
46 void* x, inc_t incx
47 );
49 // If some mixed datatype functions will not be compiled, we initialize
50 // the corresponding elements of the function array to NULL.
51 #ifdef BLIS_ENABLE_MIXED_PRECISION_SUPPORT
52 static FUNCPTR_T GENARRAY2_ALL(ftypes,trmv_unf_var1);
53 #else
54 #ifdef BLIS_ENABLE_MIXED_DOMAIN_SUPPORT
55 static FUNCPTR_T GENARRAY2_EXT(ftypes,trmv_unf_var1);
56 #else
57 static FUNCPTR_T GENARRAY2_MIN(ftypes,trmv_unf_var1);
58 #endif
59 #endif
62 void bli_trmv_unf_var1( obj_t* alpha,
63 obj_t* a,
64 obj_t* x,
65 trmv_t* cntl )
66 {
67 num_t dt_a = bli_obj_datatype( *a );
68 num_t dt_x = bli_obj_datatype( *x );
70 uplo_t uplo = bli_obj_uplo( *a );
71 trans_t trans = bli_obj_conjtrans_status( *a );
72 diag_t diag = bli_obj_diag( *a );
74 dim_t m = bli_obj_length( *a );
76 void* buf_a = bli_obj_buffer_at_off( *a );
77 inc_t rs_a = bli_obj_row_stride( *a );
78 inc_t cs_a = bli_obj_col_stride( *a );
80 void* buf_x = bli_obj_buffer_at_off( *x );
81 inc_t incx = bli_obj_vector_inc( *x );
83 num_t dt_alpha;
84 void* buf_alpha;
86 FUNCPTR_T f;
88 // The datatype of alpha MUST be the type union of a and x. This is to
89 // prevent any unnecessary loss of information during computation.
90 dt_alpha = bli_datatype_union( dt_a, dt_x );
91 buf_alpha = bli_obj_buffer_for_1x1( dt_alpha, *alpha );
93 // Index into the type combination array to extract the correct
94 // function pointer.
95 f = ftypes[dt_a][dt_x];
97 // Invoke the function.
98 f( uplo,
99 trans,
100 diag,
101 m,
102 buf_alpha,
103 buf_a, rs_a, cs_a,
104 buf_x, incx );
105 }
108 #undef GENTFUNC2U
109 #define GENTFUNC2U( ctype_a, ctype_x, ctype_ax, cha, chx, chax, varname, kername ) \
110 \
111 void PASTEMAC2(cha,chx,varname)( \
112 uplo_t uplo, \
113 trans_t trans, \
114 diag_t diag, \
115 dim_t m, \
116 void* alpha, \
117 void* a, inc_t rs_a, inc_t cs_a, \
118 void* x, inc_t incx \
119 ) \
120 { \
121 ctype_ax* alpha_cast = alpha; \
122 ctype_a* a_cast = a; \
123 ctype_x* x_cast = x; \
124 ctype_x* one = PASTEMAC(chx,1); \
125 ctype_a* A10; \
126 ctype_a* A11; \
127 ctype_a* A12; \
128 ctype_a* a10t; \
129 ctype_a* alpha11; \
130 ctype_a* a12t; \
131 ctype_x* x0; \
132 ctype_x* x1; \
133 ctype_x* x2; \
134 ctype_x* x01; \
135 ctype_x* chi11; \
136 ctype_x* x21; \
137 ctype_ax alpha_alpha11_conj; \
138 ctype_ax rho1; \
139 dim_t iter, i, k, j, l; \
140 dim_t b_fuse, f; \
141 dim_t n_ahead, f_ahead; \
142 inc_t rs_at, cs_at; \
143 uplo_t uplo_trans; \
144 conj_t conja; \
145 \
146 if ( bli_zero_dim1( m ) ) return; \
147 \
148 if ( bli_does_notrans( trans ) ) \
149 { \
150 rs_at = rs_a; \
151 cs_at = cs_a; \
152 uplo_trans = uplo; \
153 } \
154 else /* if ( bli_does_trans( trans ) ) */ \
155 { \
156 rs_at = cs_a; \
157 cs_at = rs_a; \
158 uplo_trans = bli_uplo_toggled( uplo ); \
159 } \
160 \
161 conja = bli_extract_conj( trans ); \
162 \
163 /* Query the fusing factor for the dotxf implementation. */ \
164 b_fuse = PASTEMAC(chax,dotxf_fusefac); \
165 \
166 /* We reduce all of the possible cases down to just lower/upper. */ \
167 if ( bli_is_upper( uplo_trans ) ) \
168 { \
169 for ( iter = 0; iter < m; iter += f ) \
170 { \
171 f = bli_determine_blocksize_dim_f( iter, m, b_fuse ); \
172 i = iter; \
173 n_ahead = m - iter - f; \
174 A11 = a_cast + (i )*rs_at + (i )*cs_at; \
175 A12 = a_cast + (i )*rs_at + (i+f)*cs_at; \
176 x1 = x_cast + (i )*incx; \
177 x2 = x_cast + (i+f)*incx; \
178 \
179 /* x1 = alpha * A11 * x1; */ \
180 for ( k = 0; k < f; ++k ) \
181 { \
182 l = k; \
183 f_ahead = f - l - 1; \
184 alpha11 = A11 + (l )*rs_at + (l )*cs_at; \
185 a12t = A11 + (l )*rs_at + (l+1)*cs_at; \
186 chi11 = x1 + (l )*incx; \
187 x21 = x1 + (l+1)*incx; \
188 \
189 /* chi11 = alpha * alpha11 * chi11; */ \
190 PASTEMAC2(chax,chax,copys)( *alpha_cast, alpha_alpha11_conj ); \
191 if ( bli_is_nonunit_diag( diag ) ) \
192 PASTEMAC2(cha,chax,scalcjs)( conja, *alpha11, alpha_alpha11_conj ); \
193 PASTEMAC2(chax,chx,scals)( alpha_alpha11_conj, *chi11 ); \
194 \
195 /* chi11 = chi11 + alpha * a12t * x21; */ \
196 PASTEMAC(chax,set0s)( rho1 ); \
197 if ( bli_is_conj( conja ) ) \
198 { \
199 for ( j = 0; j < f_ahead; ++j ) \
200 PASTEMAC3(cha,chx,chax,dotjs)( *(a12t + j*cs_at), *(x21 + j*incx), rho1 ); \
201 } \
202 else \
203 { \
204 for ( j = 0; j < f_ahead; ++j ) \
205 PASTEMAC3(cha,chx,chax,dots)( *(a12t + j*cs_at), *(x21 + j*incx), rho1 ); \
206 } \
207 PASTEMAC3(chax,chax,chx,axpys)( *alpha_cast, rho1, *chi11 ); \
208 } \
209 \
210 /* x1 = x1 + alpha * A12 * x2; */ \
211 PASTEMAC3(cha,chx,chx,kername)( conja, \
212 BLIS_NO_CONJUGATE, \
213 n_ahead, \
214 f, \
215 alpha_cast, \
216 A12, cs_at, rs_at, \
217 x2, incx, \
218 one, \
219 x1, incx ); \
220 } \
221 } \
222 else /* if ( bli_is_lower( uplo_trans ) ) */ \
223 { \
224 for ( iter = 0; iter < m; iter += f ) \
225 { \
226 f = bli_determine_blocksize_dim_b( iter, m, b_fuse ); \
227 i = m - iter - f; \
228 n_ahead = i; \
229 A11 = a_cast + (i )*rs_at + (i )*cs_at; \
230 A10 = a_cast + (i )*rs_at + (0 )*cs_at; \
231 x1 = x_cast + (i )*incx; \
232 x0 = x_cast + (0 )*incx; \
233 \
234 /* x1 = alpha * A11 * x1; */ \
235 for ( k = 0; k < f; ++k ) \
236 { \
237 l = f - k - 1; \
238 f_ahead = l; \
239 alpha11 = A11 + (l )*rs_at + (l )*cs_at; \
240 a10t = A11 + (l )*rs_at + (0 )*cs_at; \
241 chi11 = x1 + (l )*incx; \
242 x01 = x1 + (0 )*incx; \
243 \
244 /* chi11 = alpha * alpha11 * chi11; */ \
245 PASTEMAC2(chax,chax,copys)( *alpha_cast, alpha_alpha11_conj ); \
246 if ( bli_is_nonunit_diag( diag ) ) \
247 PASTEMAC2(cha,chax,scalcjs)( conja, *alpha11, alpha_alpha11_conj ); \
248 PASTEMAC2(chax,chx,scals)( alpha_alpha11_conj, *chi11 ); \
249 \
250 /* chi11 = chi11 + alpha * a10t * x01; */ \
251 PASTEMAC(chax,set0s)( rho1 ); \
252 if ( bli_is_conj( conja ) ) \
253 { \
254 for ( j = 0; j < f_ahead; ++j ) \
255 PASTEMAC3(cha,chx,chax,dotjs)( *(a10t + j*cs_at), *(x01 + j*incx), rho1 ); \
256 } \
257 else \
258 { \
259 for ( j = 0; j < f_ahead; ++j ) \
260 PASTEMAC3(cha,chx,chax,dots)( *(a10t + j*cs_at), *(x01 + j*incx), rho1 ); \
261 } \
262 PASTEMAC3(chax,chax,chx,axpys)( *alpha_cast, rho1, *chi11 ); \
263 } \
264 \
265 /* x1 = x1 + alpha * A10 * x0; */ \
266 PASTEMAC3(cha,chx,chx,kername)( conja, \
267 BLIS_NO_CONJUGATE, \
268 n_ahead, \
269 f, \
270 alpha_cast, \
271 A10, cs_at, rs_at, \
272 x0, incx, \
273 one, \
274 x1, incx ); \
275 } \
276 } \
277 }
279 // Define the basic set of functions unconditionally, and then also some
280 // mixed datatype functions if requested.
281 INSERT_GENTFUNC2U_BASIC( trmv_unf_var1, DOTXF_KERNEL )
283 #ifdef BLIS_ENABLE_MIXED_DOMAIN_SUPPORT
284 INSERT_GENTFUNC2U_MIX_D( trmv_unf_var1, DOTXF_KERNEL )
285 #endif
287 #ifdef BLIS_ENABLE_MIXED_PRECISION_SUPPORT
288 INSERT_GENTFUNC2U_MIX_P( trmv_unf_var1, DOTXF_KERNEL )
289 #endif